api

package module
v1.1.1-0...-8587d4c Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Aug 26, 2019 License: MPL-2.0 Imports: 23 Imported by: 0

README

Consul API client

This package provides the api package which attempts to provide programmatic access to the full Consul API.

Currently, all of the Consul APIs included in version 0.6.0 are supported.

Documentation

The full documentation is available on Godoc

Usage

Below is an example of using the Consul client:

package main

import "github.com/hashicorp/consul/api"
import "fmt"

func main() {
	// Get a new client
	client, err := api.NewClient(api.DefaultConfig())
	if err != nil {
		panic(err)
	}

	// Get a handle to the KV API
	kv := client.KV()

	// PUT a new KV pair
	p := &api.KVPair{Key: "REDIS_MAXCLIENTS", Value: []byte("1000")}
	_, err = kv.Put(p, nil)
	if err != nil {
		panic(err)
	}

	// Lookup the pair
	pair, _, err := kv.Get("REDIS_MAXCLIENTS", nil)
	if err != nil {
		panic(err)
	}
	fmt.Printf("KV: %v %s\n", pair.Key, pair.Value)
}

To run this example, start a Consul server:

consul agent -dev

Copy the code above into a file such as main.go.

Install and run. You'll see a key (REDIS_MAXCLIENTS) and value (1000) printed.

$ go get
$ go run main.go
KV: REDIS_MAXCLIENTS 1000

After running the code, you can also view the values in the Consul UI on your local machine at http://localhost:8500/ui/dc1/kv

Documentation

Index

Constants

View Source 
const (
	// ACLClientType is the client type token
	ACLClientType = "client"

	// ACLManagementType is the management type token
	ACLManagementType = "management"
)
View Source 
const (
	// HTTPAddrEnvName defines an environment variable name which sets
	// the HTTP address if there is no -http-addr specified.
	HTTPAddrEnvName = "CONSUL_HTTP_ADDR"

	// HTTPTokenEnvName defines an environment variable name which sets
	// the HTTP token.
	HTTPTokenEnvName = "CONSUL_HTTP_TOKEN"

	// HTTPTokenFileEnvName defines an environment variable name which sets
	// the HTTP token file.
	HTTPTokenFileEnvName = "CONSUL_HTTP_TOKEN_FILE"

	// HTTPAuthEnvName defines an environment variable name which sets
	// the HTTP authentication header.
	HTTPAuthEnvName = "CONSUL_HTTP_AUTH"

	// HTTPSSLEnvName defines an environment variable name which sets
	// whether or not to use HTTPS.
	HTTPSSLEnvName = "CONSUL_HTTP_SSL"

	// HTTPCAFile defines an environment variable name which sets the
	// CA file to use for talking to Consul over TLS.
	HTTPCAFile = "CONSUL_CACERT"

	// HTTPCAPath defines an environment variable name which sets the
	// path to a directory of CA certs to use for talking to Consul over TLS.
	HTTPCAPath = "CONSUL_CAPATH"

	// HTTPClientCert defines an environment variable name which sets the
	// client cert file to use for talking to Consul over TLS.
	HTTPClientCert = "CONSUL_CLIENT_CERT"

	// HTTPClientKey defines an environment variable name which sets the
	// client key file to use for talking to Consul over TLS.
	HTTPClientKey = "CONSUL_CLIENT_KEY"

	// HTTPTLSServerName defines an environment variable name which sets the
	// server name to use as the SNI host when connecting via TLS
	HTTPTLSServerName = "CONSUL_TLS_SERVER_NAME"

	// HTTPSSLVerifyEnvName defines an environment variable name which sets
	// whether or not to disable certificate checking.
	HTTPSSLVerifyEnvName = "CONSUL_HTTP_SSL_VERIFY"

	// GRPCAddrEnvName defines an environment variable name which sets the gRPC
	// address for consul connect envoy. Note this isn't actually used by the api
	// client in this package but is defined here for consistency with all the
	// other ENV names we use.
	GRPCAddrEnvName = "CONSUL_GRPC_ADDR"
)
View Source 
const (
	ServiceDefaults string = "service-defaults"
	ProxyDefaults   string = "proxy-defaults"
	ServiceRouter   string = "service-router"
	ServiceSplitter string = "service-splitter"
	ServiceResolver string = "service-resolver"

	ProxyConfigGlobal string = "global"
)
View Source 
const (
	DiscoveryGraphNodeTypeRouter   = "router"
	DiscoveryGraphNodeTypeSplitter = "splitter"
	DiscoveryGraphNodeTypeResolver = "resolver"
)
View Source 
const (
	// HealthAny is special, and is used as a wild card,
	// not as a specific state.
	HealthAny      = "any"
	HealthPassing  = "passing"
	HealthWarning  = "warning"
	HealthCritical = "critical"
	HealthMaint    = "maintenance"
)
View Source 
const (
	// NodeMaint is the special key set by a node in maintenance mode.
	NodeMaint = "_node_maintenance"

	// ServiceMaintPrefix is the prefix for a service in maintenance mode.
	ServiceMaintPrefix = "_service_maintenance:"
)
View Source 
const (
	// DefaultLockSessionName is the Session Name we assign if none is provided
	DefaultLockSessionName = "Consul API Lock"

	// DefaultLockSessionTTL is the default session TTL if no Session is provided
	// when creating a new Lock. This is used because we do not have another
	// other check to depend upon.
	DefaultLockSessionTTL = "15s"

	// DefaultLockWaitTime is how long we block for at a time to check if lock
	// acquisition is possible. This affects the minimum time it takes to cancel
	// a Lock acquisition.
	DefaultLockWaitTime = 15 * time.Second

	// DefaultLockRetryTime is how long we wait after a failed lock acquisition
	// before attempting to do the lock again. This is so that once a lock-delay
	// is in effect, we do not hot loop retrying the acquisition.
	DefaultLockRetryTime = 5 * time.Second

	// DefaultMonitorRetryTime is how long we wait after a failed monitor check
	// of a lock (500 response code). This allows the monitor to ride out brief
	// periods of unavailability, subject to the MonitorRetries setting in the
	// lock options which is by default set to 0, disabling this feature. This
	// affects locks and semaphores.
	DefaultMonitorRetryTime = 2 * time.Second

	// LockFlagValue is a magic flag we set to indicate a key
	// is being used for a lock. It is used to detect a potential
	// conflict with a semaphore.
	LockFlagValue = 0x2ddccbc058a50c18
)
View Source 
const (
	// DefaultSemaphoreSessionName is the Session Name we assign if none is provided
	DefaultSemaphoreSessionName = "Consul API Semaphore"

	// DefaultSemaphoreSessionTTL is the default session TTL if no Session is provided
	// when creating a new Semaphore. This is used because we do not have another
	// other check to depend upon.
	DefaultSemaphoreSessionTTL = "15s"

	// DefaultSemaphoreWaitTime is how long we block for at a time to check if semaphore
	// acquisition is possible. This affects the minimum time it takes to cancel
	// a Semaphore acquisition.
	DefaultSemaphoreWaitTime = 15 * time.Second

	// DefaultSemaphoreKey is the key used within the prefix to
	// use for coordination between all the contenders.
	DefaultSemaphoreKey = ".lock"

	// SemaphoreFlagValue is a magic flag we set to indicate a key
	// is being used for a semaphore. It is used to detect a potential
	// conflict with a lock.
	SemaphoreFlagValue = 0xe0f69a2baa414de0
)
View Source 
const (
	// SessionBehaviorRelease is the default behavior and causes
	// all associated locks to be released on session invalidation.
	SessionBehaviorRelease = "release"

	// SessionBehaviorDelete is new in Consul 0.5 and changes the
	// behavior to delete all associated locks on session invalidation.
	// It can be used in a way similar to Ephemeral Nodes in ZooKeeper.
	SessionBehaviorDelete = "delete"
)
View Source 
const AllSegments = "_all"

AllSegments is used to select for all segments in MembersOpts.

View Source 
const IntentionDefaultNamespace = "default"

IntentionDefaultNamespace is the default namespace value.

Variables

View Source 
var (
	// ErrLockHeld is returned if we attempt to double lock
	ErrLockHeld = fmt.Errorf("Lock already held")

	// ErrLockNotHeld is returned if we attempt to unlock a lock
	// that we do not hold.
	ErrLockNotHeld = fmt.Errorf("Lock not held")

	// ErrLockInUse is returned if we attempt to destroy a lock
	// that is in use.
	ErrLockInUse = fmt.Errorf("Lock in use")

	// ErrLockConflict is returned if the flags on a key
	// used for a lock do not match expectation
	ErrLockConflict = fmt.Errorf("Existing key does not match lock use")
)
View Source 
var (
	// ErrSemaphoreHeld is returned if we attempt to double lock
	ErrSemaphoreHeld = fmt.Errorf("Semaphore already held")

	// ErrSemaphoreNotHeld is returned if we attempt to unlock a semaphore
	// that we do not hold.
	ErrSemaphoreNotHeld = fmt.Errorf("Semaphore not held")

	// ErrSemaphoreInUse is returned if we attempt to destroy a semaphore
	// that is in use.
	ErrSemaphoreInUse = fmt.Errorf("Semaphore in use")

	// ErrSemaphoreConflict is returned if the flags on a key
	// used for a semaphore do not match expectation
	ErrSemaphoreConflict = fmt.Errorf("Existing key does not match semaphore use")
)
View Source 
var ErrSessionExpired = errors.New("session expired")

Functions

func IsRetryableError 

func IsRetryableError(err error) bool

IsRetryableError returns true for 500 errors from the Consul servers, and network connection errors. These are usually retryable at a later time. This applies to reads but NOT to writes. This may return true for errors on writes that may have still gone through, so do not use this to retry any write operations.

func NewHttpClient 

func NewHttpClient(transport *http.Transport, tlsConf TLSConfig) (*http.Client, error)

NewHttpClient returns an http client configured with the given Transport and TLS config.

func SetupTLSConfig 

func SetupTLSConfig(tlsConfig *TLSConfig) (*tls.Config, error)

TLSConfig is used to generate a TLSClientConfig that's useful for talking to Consul using TLS.

Types

type ACL 

type ACL struct {
	// contains filtered or unexported fields
}

ACL can be used to query the ACL endpoints

func (*ACL) AuthMethodCreate 

func (a *ACL) AuthMethodCreate(method *ACLAuthMethod, q *WriteOptions) (*ACLAuthMethod, *WriteMeta, error)

AuthMethodCreate will create a new auth method.

func (*ACL) AuthMethodDelete 

func (a *ACL) AuthMethodDelete(methodName string, q *WriteOptions) (*WriteMeta, error)

AuthMethodDelete deletes an auth method given its Name.

func (*ACL) AuthMethodList 

func (a *ACL) AuthMethodList(q *QueryOptions) ([]*ACLAuthMethodListEntry, *QueryMeta, error)

AuthMethodList retrieves a listing of all auth methods. The listing does not include some metadata for the auth method as those should be retrieved by subsequent calls to AuthMethodRead.

func (*ACL) AuthMethodRead 

func (a *ACL) AuthMethodRead(methodName string, q *QueryOptions) (*ACLAuthMethod, *QueryMeta, error)

AuthMethodRead retrieves the auth method. Returns nil if not found.

func (*ACL) AuthMethodUpdate 

func (a *ACL) AuthMethodUpdate(method *ACLAuthMethod, q *WriteOptions) (*ACLAuthMethod, *WriteMeta, error)

AuthMethodUpdate updates an auth method.

func (*ACL) BindingRuleCreate 

func (a *ACL) BindingRuleCreate(rule *ACLBindingRule, q *WriteOptions) (*ACLBindingRule, *WriteMeta, error)

BindingRuleCreate will create a new binding rule. It is not allowed for the binding rule parameter's ID field to be set as this will be generated by Consul while processing the request.

func (*ACL) BindingRuleDelete 

func (a *ACL) BindingRuleDelete(bindingRuleID string, q *WriteOptions) (*WriteMeta, error)

BindingRuleDelete deletes a binding rule given its ID.

func (*ACL) BindingRuleList 

func (a *ACL) BindingRuleList(methodName string, q *QueryOptions) ([]*ACLBindingRule, *QueryMeta, error)

BindingRuleList retrieves a listing of all binding rules.

func (*ACL) BindingRuleRead 

func (a *ACL) BindingRuleRead(bindingRuleID string, q *QueryOptions) (*ACLBindingRule, *QueryMeta, error)

BindingRuleRead retrieves the binding rule details. Returns nil if not found.

func (*ACL) BindingRuleUpdate 

func (a *ACL) BindingRuleUpdate(rule *ACLBindingRule, q *WriteOptions) (*ACLBindingRule, *WriteMeta, error)

BindingRuleUpdate updates a binding rule. The ID field of the role binding rule parameter must be set to an existing binding rule ID.

func (*ACL) Bootstrap 

func (a *ACL) Bootstrap() (*ACLToken, *WriteMeta, error)

Bootstrap is used to perform a one-time ACL bootstrap operation on a cluster to get the first management token.

func (*ACL) Clone deprecated 

func (a *ACL) Clone(id string, q *WriteOptions) (string, *WriteMeta, error)

Clone is used to return a new token cloned from an existing one

Deprecated: Use TokenClone instead.

func (*ACL) Create deprecated 

func (a *ACL) Create(acl *ACLEntry, q *WriteOptions) (string, *WriteMeta, error)

Create is used to generate a new token with the given parameters

Deprecated: Use TokenCreate instead.

func (*ACL) Destroy deprecated 

func (a *ACL) Destroy(id string, q *WriteOptions) (*WriteMeta, error)

Destroy is used to destroy a given ACL token ID

Deprecated: Use TokenDelete instead.

func (*ACL) Info deprecated 

func (a *ACL) Info(id string, q *QueryOptions) (*ACLEntry, *QueryMeta, error)

Info is used to query for information about an ACL token

Deprecated: Use TokenRead instead.

func (*ACL) List deprecated 

func (a *ACL) List(q *QueryOptions) ([]*ACLEntry, *QueryMeta, error)

List is used to get all the ACL tokens

Deprecated: Use TokenList instead.

func (*ACL) Login 

func (a *ACL) Login(auth *ACLLoginParams, q *WriteOptions) (*ACLToken, *WriteMeta, error)

Login is used to exchange auth method credentials for a newly-minted Consul Token.

func (*ACL) Logout 

func (a *ACL) Logout(q *WriteOptions) (*WriteMeta, error)

Logout is used to destroy a Consul Token created via Login().

func (*ACL) PolicyCreate 

func (a *ACL) PolicyCreate(policy *ACLPolicy, q *WriteOptions) (*ACLPolicy, *WriteMeta, error)

PolicyCreate will create a new policy. It is not allowed for the policy parameters ID field to be set as this will be generated by Consul while processing the request.

func (*ACL) PolicyDelete 

func (a *ACL) PolicyDelete(policyID string, q *WriteOptions) (*WriteMeta, error)

PolicyDelete deletes a policy given its ID.

func (*ACL) PolicyList 

func (a *ACL) PolicyList(q *QueryOptions) ([]*ACLPolicyListEntry, *QueryMeta, error)

PolicyList retrieves a listing of all policies. The listing does not include the rules for any policy as those should be retrieved by subsequent calls to PolicyRead.

func (*ACL) PolicyRead 

func (a *ACL) PolicyRead(policyID string, q *QueryOptions) (*ACLPolicy, *QueryMeta, error)

PolicyRead retrieves the policy details including the rule set.

func (*ACL) PolicyUpdate 

func (a *ACL) PolicyUpdate(policy *ACLPolicy, q *WriteOptions) (*ACLPolicy, *WriteMeta, error)

PolicyUpdate updates a policy. The ID field of the policy parameter must be set to an existing policy ID

func (*ACL) Replication 

func (a *ACL) Replication(q *QueryOptions) (*ACLReplicationStatus, *QueryMeta, error)

Replication returns the status of the ACL replication process in the datacenter

func (*ACL) RoleCreate 

func (a *ACL) RoleCreate(role *ACLRole, q *WriteOptions) (*ACLRole, *WriteMeta, error)

RoleCreate will create a new role. It is not allowed for the role parameters ID field to be set as this will be generated by Consul while processing the request.

func (*ACL) RoleDelete 

func (a *ACL) RoleDelete(roleID string, q *WriteOptions) (*WriteMeta, error)

RoleDelete deletes a role given its ID.

func (*ACL) RoleList 

func (a *ACL) RoleList(q *QueryOptions) ([]*ACLRole, *QueryMeta, error)

RoleList retrieves a listing of all roles. The listing does not include some metadata for the role as those should be retrieved by subsequent calls to RoleRead.

func (*ACL) RoleRead 

func (a *ACL) RoleRead(roleID string, q *QueryOptions) (*ACLRole, *QueryMeta, error)

RoleRead retrieves the role details (by ID). Returns nil if not found.

func (*ACL) RoleReadByName 

func (a *ACL) RoleReadByName(roleName string, q *QueryOptions) (*ACLRole, *QueryMeta, error)

RoleReadByName retrieves the role details (by name). Returns nil if not found.

func (*ACL) RoleUpdate 

func (a *ACL) RoleUpdate(role *ACLRole, q *WriteOptions) (*ACLRole, *WriteMeta, error)

RoleUpdate updates a role. The ID field of the role parameter must be set to an existing role ID

func (*ACL) RulesTranslate deprecated 

func (a *ACL) RulesTranslate(rules io.Reader) (string, error)

RulesTranslate translates the legacy rule syntax into the current syntax.

Deprecated: Support for the legacy syntax translation will be removed when legacy ACL support is removed.

func (*ACL) RulesTranslateToken deprecated 

func (a *ACL) RulesTranslateToken(tokenID string) (string, error)

RulesTranslateToken translates the rules associated with the legacy syntax into the current syntax and returns the results.

Deprecated: Support for the legacy syntax translation will be removed when legacy ACL support is removed.

func (*ACL) TokenClone 

func (a *ACL) TokenClone(tokenID string, description string, q *WriteOptions) (*ACLToken, *WriteMeta, error)

TokenClone will create a new token with the same policies and locality as the original token but will have its own auto-generated AccessorID and SecretID as well having the description passed to this function. The tokenID parameter must be a valid Accessor ID of an existing token.

func (*ACL) TokenCreate 

func (a *ACL) TokenCreate(token *ACLToken, q *WriteOptions) (*ACLToken, *WriteMeta, error)

TokenCreate creates a new ACL token. If either the AccessorID or SecretID fields of the ACLToken structure are empty they will be filled in by Consul.

func (*ACL) TokenDelete 

func (a *ACL) TokenDelete(tokenID string, q *WriteOptions) (*WriteMeta, error)

TokenDelete removes a single ACL token. The tokenID parameter must be a valid Accessor ID of an existing token.

func (*ACL) TokenList 

func (a *ACL) TokenList(q *QueryOptions) ([]*ACLTokenListEntry, *QueryMeta, error)

TokenList lists all tokens. The listing does not contain any SecretIDs as those may only be retrieved by a call to TokenRead.

func (*ACL) TokenRead 

func (a *ACL) TokenRead(tokenID string, q *QueryOptions) (*ACLToken, *QueryMeta, error)

TokenRead retrieves the full token details. The tokenID parameter must be a valid Accessor ID of an existing token.

func (*ACL) TokenReadSelf 

func (a *ACL) TokenReadSelf(q *QueryOptions) (*ACLToken, *QueryMeta, error)

TokenReadSelf retrieves the full token details of the token currently assigned to the API Client. In this manner its possible to read a token by its Secret ID.

func (*ACL) TokenUpdate 

func (a *ACL) TokenUpdate(token *ACLToken, q *WriteOptions) (*ACLToken, *WriteMeta, error)

TokenUpdate updates a token in place without modifying its AccessorID or SecretID. A valid AccessorID must be set in the ACLToken structure passed to this function but the SecretID may be omitted and will be filled in by Consul with its existing value.

func (*ACL) Update deprecated 

func (a *ACL) Update(acl *ACLEntry, q *WriteOptions) (*WriteMeta, error)

Update is used to update the rules of an existing token

Deprecated: Use TokenUpdate instead.

type ACLAuthMethod 

type ACLAuthMethod struct {
	Name        string
	Type        string
	Description string

	// Configuration is arbitrary configuration for the auth method. This
	// should only contain primitive values and containers (such as lists and
	// maps).
	Config map[string]interface{}

	CreateIndex uint64
	ModifyIndex uint64
}

type ACLAuthMethodListEntry 

type ACLAuthMethodListEntry struct {
	Name        string
	Type        string
	Description string
	CreateIndex uint64
	ModifyIndex uint64
}

type ACLBindingRule 

type ACLBindingRule struct {
	ID          string
	Description string
	AuthMethod  string
	Selector    string
	BindType    BindingRuleBindType
	BindName    string

	CreateIndex uint64
	ModifyIndex uint64
}

type ACLEntry 

type ACLEntry struct {
	CreateIndex uint64
	ModifyIndex uint64
	ID          string
	Name        string
	Type        string
	Rules       string
}

ACLEntry is used to represent a legacy ACL token The legacy tokens are deprecated.

type ACLLoginParams 

type ACLLoginParams struct {
	AuthMethod  string
	BearerToken string
	Meta        map[string]string `json:",omitempty"`
}

type ACLPolicy 

type ACLPolicy struct {
	ID          string
	Name        string
	Description string
	Rules       string
	Datacenters []string
	Hash        []byte
	CreateIndex uint64
	ModifyIndex uint64
}

ACLPolicy represents an ACL Policy.

type ACLPolicyListEntry 

type ACLPolicyListEntry struct {
	ID          string
	Name        string
	Description string
	Datacenters []string
	Hash        []byte
	CreateIndex uint64
	ModifyIndex uint64
}

type ACLReplicationStatus 

type ACLReplicationStatus struct {
	Enabled              bool
	Running              bool
	SourceDatacenter     string
	ReplicationType      string
	ReplicatedIndex      uint64
	ReplicatedRoleIndex  uint64
	ReplicatedTokenIndex uint64
	LastSuccess          time.Time
	LastError            time.Time
}

ACLReplicationStatus is used to represent the status of ACL replication.

type ACLRole 

type ACLRole struct {
	ID                string
	Name              string
	Description       string
	Policies          []*ACLRolePolicyLink  `json:",omitempty"`
	ServiceIdentities []*ACLServiceIdentity `json:",omitempty"`
	Hash              []byte
	CreateIndex       uint64
	ModifyIndex       uint64
}

ACLRole represents an ACL Role. 

type ACLRolePolicyLink struct {
	ID   string
	Name string
}

type ACLServiceIdentity 

type ACLServiceIdentity struct {
	ServiceName string
	Datacenters []string `json:",omitempty"`
}

ACLServiceIdentity represents a high-level grant of all necessary privileges to assume the identity of the named Service in the Catalog and within Connect.

type ACLToken 

type ACLToken struct {
	CreateIndex       uint64
	ModifyIndex       uint64
	AccessorID        string
	SecretID          string
	Description       string
	Policies          []*ACLTokenPolicyLink `json:",omitempty"`
	Roles             []*ACLTokenRoleLink   `json:",omitempty"`
	ServiceIdentities []*ACLServiceIdentity `json:",omitempty"`
	Local             bool
	ExpirationTTL     time.Duration `json:",omitempty"`
	ExpirationTime    *time.Time    `json:",omitempty"`
	CreateTime        time.Time     `json:",omitempty"`
	Hash              []byte        `json:",omitempty"`

	// DEPRECATED (ACL-Legacy-Compat)
	// Rules will only be present for legacy tokens returned via the new APIs
	Rules string `json:",omitempty"`
}

ACLToken represents an ACL Token

type ACLTokenListEntry 

type ACLTokenListEntry struct {
	CreateIndex       uint64
	ModifyIndex       uint64
	AccessorID        string
	Description       string
	Policies          []*ACLTokenPolicyLink `json:",omitempty"`
	Roles             []*ACLTokenRoleLink   `json:",omitempty"`
	ServiceIdentities []*ACLServiceIdentity `json:",omitempty"`
	Local             bool
	ExpirationTime    *time.Time `json:",omitempty"`
	CreateTime        time.Time
	Hash              []byte
	Legacy            bool
}
type ACLTokenPolicyLink struct {
	ID   string
	Name string
}
type ACLTokenRoleLink struct {
	ID   string
	Name string
}

type Agent 

type Agent struct {
	// contains filtered or unexported fields
}

Agent can be used to query the Agent endpoints

func (*Agent) AgentHealthServiceByID 

func (a *Agent) AgentHealthServiceByID(serviceID string) (string, *AgentServiceChecksInfo, error)

AgentHealthServiceByID returns for a given serviceID: the aggregated health status, the service definition or an error if any - If the service is not found, will return status (critical, nil, nil) - If the service is found, will return (critical|passing|warning), AgentServiceChecksInfo, nil) - In all other cases, will return an error

func (*Agent) AgentHealthServiceByName 

func (a *Agent) AgentHealthServiceByName(service string) (string, []AgentServiceChecksInfo, error)

AgentHealthServiceByName returns for a given service name: the aggregated health status for all services having the specified name. - If no service is not found, will return status (critical, [], nil) - If the service is found, will return (critical|passing|warning), []api.AgentServiceChecksInfo, nil) - In all other cases, will return an error

func (*Agent) CheckDeregister 

func (a *Agent) CheckDeregister(checkID string) error

CheckDeregister is used to deregister a check with the local agent

func (*Agent) CheckRegister 

func (a *Agent) CheckRegister(check *AgentCheckRegistration) error

CheckRegister is used to register a new check with the local agent

func (*Agent) Checks 

func (a *Agent) Checks() (map[string]*AgentCheck, error)

Checks returns the locally registered checks

func (*Agent) ChecksWithFilter 

func (a *Agent) ChecksWithFilter(filter string) (map[string]*AgentCheck, error)

ChecksWithFilter returns a subset of the locally registered checks that match the given filter expression

func (*Agent) ConnectAuthorize 

func (a *Agent) ConnectAuthorize(auth *AgentAuthorizeParams) (*AgentAuthorize, error)

ConnectAuthorize is used to authorize an incoming connection to a natively integrated Connect service.

func (*Agent) ConnectCALeaf 

func (a *Agent) ConnectCALeaf(serviceID string, q *QueryOptions) (*LeafCert, *QueryMeta, error)

ConnectCALeaf gets the leaf certificate for the given service ID.

func (*Agent) ConnectCARoots 

func (a *Agent) ConnectCARoots(q *QueryOptions) (*CARootList, *QueryMeta, error)

ConnectCARoots returns the list of roots.

func (*Agent) DisableNodeMaintenance 

func (a *Agent) DisableNodeMaintenance() error

DisableNodeMaintenance toggles node maintenance mode off for the agent we are connected to.

func (*Agent) DisableServiceMaintenance 

func (a *Agent) DisableServiceMaintenance(serviceID string) error

DisableServiceMaintenance toggles service maintenance mode off for the given service ID.

func (*Agent) EnableNodeMaintenance 

func (a *Agent) EnableNodeMaintenance(reason string) error

EnableNodeMaintenance toggles node maintenance mode on for the agent we are connected to.

func (*Agent) EnableServiceMaintenance 

func (a *Agent) EnableServiceMaintenance(serviceID, reason string) error

EnableServiceMaintenance toggles service maintenance mode on for the given service ID.

func (*Agent) FailTTL 

func (a *Agent) FailTTL(checkID, note string) error

FailTTL is used to set a TTL check to the failing state.

DEPRECATION NOTICE: This interface is deprecated in favor of UpdateTTL(). The client interface will be removed in 0.8 or changed to use UpdateTTL()'s endpoint and the server endpoints will be removed in 0.9.

func (*Agent) ForceLeave 

func (a *Agent) ForceLeave(node string) error

ForceLeave is used to have the agent eject a failed node

func (*Agent) Host 

func (a *Agent) Host() (map[string]interface{}, error)

Host is used to retrieve information about the host the agent is running on such as CPU, memory, and disk. Requires a operator:read ACL token.

func (*Agent) Join 

func (a *Agent) Join(addr string, wan bool) error

Join is used to instruct the agent to attempt a join to another cluster member

func (*Agent) Leave 

func (a *Agent) Leave() error

Leave is used to have the agent gracefully leave the cluster and shutdown

func (*Agent) Members 

func (a *Agent) Members(wan bool) ([]*AgentMember, error)

Members returns the known gossip members. The WAN flag can be used to query a server for WAN members.

func (*Agent) MembersOpts 

func (a *Agent) MembersOpts(opts MembersOpts) ([]*AgentMember, error)

MembersOpts returns the known gossip members and can be passed additional options for WAN/segment filtering.

func (*Agent) Metrics 

func (a *Agent) Metrics() (*MetricsInfo, error)

Metrics is used to query the agent we are speaking to for its current internal metric data

func (*Agent) Monitor 

func (a *Agent) Monitor(loglevel string, stopCh <-chan struct{}, q *QueryOptions) (chan string, error)

Monitor returns a channel which will receive streaming logs from the agent Providing a non-nil stopCh can be used to close the connection and stop the log stream. An empty string will be sent down the given channel when there's nothing left to stream, after which the caller should close the stopCh.

func (*Agent) NodeName 

func (a *Agent) NodeName() (string, error)

NodeName is used to get the node name of the agent

func (*Agent) PassTTL 

func (a *Agent) PassTTL(checkID, note string) error

PassTTL is used to set a TTL check to the passing state.

DEPRECATION NOTICE: This interface is deprecated in favor of UpdateTTL(). The client interface will be removed in 0.8 or changed to use UpdateTTL()'s endpoint and the server endpoints will be removed in 0.9.

func (*Agent) Reload 

func (a *Agent) Reload() error

Reload triggers a configuration reload for the agent we are connected to.

func (*Agent) Self 

func (a *Agent) Self() (map[string]map[string]interface{}, error)

Self is used to query the agent we are speaking to for information about itself

func (*Agent) Service 

func (a *Agent) Service(serviceID string, q *QueryOptions) (*AgentService, *QueryMeta, error)

Service returns a locally registered service instance and allows for hash-based blocking.

Note that this uses an unconventional blocking mechanism since it's agent-local state. That means there is no persistent raft index so we block based on object hash instead.

func (*Agent) ServiceDeregister 

func (a *Agent) ServiceDeregister(serviceID string) error

ServiceDeregister is used to deregister a service with the local agent

func (*Agent) ServiceRegister 

func (a *Agent) ServiceRegister(service *AgentServiceRegistration) error

ServiceRegister is used to register a new service with the local agent

func (*Agent) Services 

func (a *Agent) Services() (map[string]*AgentService, error)

Services returns the locally registered services

func (*Agent) ServicesWithFilter 

func (a *Agent) ServicesWithFilter(filter string) (map[string]*AgentService, error)

ServicesWithFilter returns a subset of the locally registered services that match the given filter expression

func (*Agent) UpdateACLAgentMasterToken 

func (a *Agent) UpdateACLAgentMasterToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateACLAgentMasterToken updates the agent's "acl_agent_master_token". See updateToken for more details.

DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateAgentMasterACLToken for v1.4.3 and above

func (*Agent) UpdateACLAgentToken 

func (a *Agent) UpdateACLAgentToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateACLAgentToken updates the agent's "acl_agent_token". See updateToken for more details.

DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateAgentACLToken for v1.4.3 and above

func (*Agent) UpdateACLReplicationToken 

func (a *Agent) UpdateACLReplicationToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateACLReplicationToken updates the agent's "acl_replication_token". See updateToken for more details.

DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateReplicationACLToken for v1.4.3 and above

func (*Agent) UpdateACLToken 

func (a *Agent) UpdateACLToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateACLToken updates the agent's "acl_token". See updateToken for more details.

DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateDefaultACLToken for v1.4.3 and above

func (*Agent) UpdateAgentACLToken 

func (a *Agent) UpdateAgentACLToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateAgentACLToken updates the agent's "agent" token. See updateToken for more details

func (*Agent) UpdateAgentMasterACLToken 

func (a *Agent) UpdateAgentMasterACLToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateAgentMasterACLToken updates the agent's "agent_master" token. See updateToken for more details

func (*Agent) UpdateDefaultACLToken 

func (a *Agent) UpdateDefaultACLToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateDefaultACLToken updates the agent's "default" token. See updateToken for more details

func (*Agent) UpdateReplicationACLToken 

func (a *Agent) UpdateReplicationACLToken(token string, q *WriteOptions) (*WriteMeta, error)

UpdateReplicationACLToken updates the agent's "replication" token. See updateToken for more details

func (*Agent) UpdateTTL 

func (a *Agent) UpdateTTL(checkID, output, status string) error

UpdateTTL is used to update the TTL of a check. This uses the newer API that was introduced in Consul 0.6.4 and later. We translate the old status strings for compatibility (though a newer version of Consul will still be required to use this API).

func (*Agent) WarnTTL 

func (a *Agent) WarnTTL(checkID, note string) error

WarnTTL is used to set a TTL check to the warning state.

DEPRECATION NOTICE: This interface is deprecated in favor of UpdateTTL(). The client interface will be removed in 0.8 or changed to use UpdateTTL()'s endpoint and the server endpoints will be removed in 0.9.

type AgentAuthorize 

type AgentAuthorize struct {
	Authorized bool
	Reason     string
}

AgentAuthorize is the response structure for Connect authorization.

type AgentAuthorizeParams 

type AgentAuthorizeParams struct {
	Target           string
	ClientCertURI    string
	ClientCertSerial string
}

AgentAuthorizeParams are the request parameters for authorizing a request.

type AgentCheck 

type AgentCheck struct {
	Node        string
	CheckID     string
	Name        string
	Status      string
	Notes       string
	Output      string
	ServiceID   string
	ServiceName string
	Definition  HealthCheckDefinition
}

AgentCheck represents a check known to the agent

type AgentCheckRegistration 

type AgentCheckRegistration struct {
	ID        string `json:",omitempty"`
	Name      string `json:",omitempty"`
	Notes     string `json:",omitempty"`
	ServiceID string `json:",omitempty"`
	AgentServiceCheck
}

AgentCheckRegistration is used to register a new check

type AgentMember 

type AgentMember struct {
	Name        string
	Addr        string
	Port        uint16
	Tags        map[string]string
	Status      int
	ProtocolMin uint8
	ProtocolMax uint8
	ProtocolCur uint8
	DelegateMin uint8
	DelegateMax uint8
	DelegateCur uint8
}

AgentMember represents a cluster member known to the agent

type AgentService 

type AgentService struct {
	Kind              ServiceKind `json:",omitempty"`
	ID                string
	Service           string
	Tags              []string
	Meta              map[string]string
	Port              int
	Address           string
	TaggedAddresses   map[string]ServiceAddress `json:",omitempty"`
	Weights           AgentWeights
	EnableTagOverride bool
	CreateIndex       uint64                          `json:",omitempty" bexpr:"-"`
	ModifyIndex       uint64                          `json:",omitempty" bexpr:"-"`
	ContentHash       string                          `json:",omitempty" bexpr:"-"`
	Proxy             *AgentServiceConnectProxyConfig `json:",omitempty"`
	Connect           *AgentServiceConnect            `json:",omitempty"`
}

AgentService represents a service known to the agent

type AgentServiceCheck 

type AgentServiceCheck struct {
	CheckID           string              `json:",omitempty"`
	Name              string              `json:",omitempty"`
	Args              []string            `json:"ScriptArgs,omitempty"`
	DockerContainerID string              `json:",omitempty"`
	Shell             string              `json:",omitempty"` // Only supported for Docker.
	Interval          string              `json:",omitempty"`
	Timeout           string              `json:",omitempty"`
	TTL               string              `json:",omitempty"`
	HTTP              string              `json:",omitempty"`
	Header            map[string][]string `json:",omitempty"`
	Method            string              `json:",omitempty"`
	TCP               string              `json:",omitempty"`
	Status            string              `json:",omitempty"`
	Notes             string              `json:",omitempty"`
	TLSSkipVerify     bool                `json:",omitempty"`
	GRPC              string              `json:",omitempty"`
	GRPCUseTLS        bool                `json:",omitempty"`
	AliasNode         string              `json:",omitempty"`
	AliasService      string              `json:",omitempty"`

	// In Consul 0.7 and later, checks that are associated with a service
	// may also contain this optional DeregisterCriticalServiceAfter field,
	// which is a timeout in the same Go time format as Interval and TTL. If
	// a check is in the critical state for more than this configured value,
	// then its associated service (and all of its associated checks) will
	// automatically be deregistered.
	DeregisterCriticalServiceAfter string `json:",omitempty"`
}

AgentServiceCheck is used to define a node or service level check

type AgentServiceChecks 

type AgentServiceChecks []*AgentServiceCheck

type AgentServiceChecksInfo 

type AgentServiceChecksInfo struct {
	AggregatedStatus string
	Service          *AgentService
	Checks           HealthChecks
}

AgentServiceChecksInfo returns information about a Service and its checks

type AgentServiceConnect 

type AgentServiceConnect struct {
	Native         bool                      `json:",omitempty"`
	SidecarService *AgentServiceRegistration `json:",omitempty" bexpr:"-"`
}

AgentServiceConnect represents the Connect configuration of a service.

type AgentServiceConnectProxyConfig 

type AgentServiceConnectProxyConfig struct {
	DestinationServiceName string                 `json:",omitempty"`
	DestinationServiceID   string                 `json:",omitempty"`
	LocalServiceAddress    string                 `json:",omitempty"`
	LocalServicePort       int                    `json:",omitempty"`
	Config                 map[string]interface{} `json:",omitempty" bexpr:"-"`
	Upstreams              []Upstream             `json:",omitempty"`
	MeshGateway            MeshGatewayConfig      `json:",omitempty"`
}

AgentServiceConnectProxyConfig is the proxy configuration in a connect-proxy ServiceDefinition or response.

type AgentServiceRegistration 

type AgentServiceRegistration struct {
	Kind              ServiceKind               `json:",omitempty"`
	ID                string                    `json:",omitempty"`
	Name              string                    `json:",omitempty"`
	Tags              []string                  `json:",omitempty"`
	Port              int                       `json:",omitempty"`
	Address           string                    `json:",omitempty"`
	TaggedAddresses   map[string]ServiceAddress `json:",omitempty"`
	EnableTagOverride bool                      `json:",omitempty"`
	Meta              map[string]string         `json:",omitempty"`
	Weights           *AgentWeights             `json:",omitempty"`
	Check             *AgentServiceCheck
	Checks            AgentServiceChecks
	Proxy             *AgentServiceConnectProxyConfig `json:",omitempty"`
	Connect           *AgentServiceConnect            `json:",omitempty"`
}

AgentServiceRegistration is used to register a new service

type AgentToken 

type AgentToken struct {
	Token string
}

AgentToken is used when updating ACL tokens for an agent.

type AgentWeights 

type AgentWeights struct {
	Passing int
	Warning int
}

AgentWeights represent optional weights for a service

type Area 

type Area struct {
	// ID is this identifier for an area (a UUID). This must be left empty
	// when creating a new area.
	ID string

	// PeerDatacenter is the peer Consul datacenter that will make up the
	// other side of this network area. Network areas always involve a pair
	// of datacenters: the datacenter where the area was created, and the
	// peer datacenter. This is required.
	PeerDatacenter string

	// RetryJoin specifies the address of Consul servers to join to, such as
	// an IPs or hostnames with an optional port number. This is optional.
	RetryJoin []string

	// UseTLS specifies whether gossip over this area should be encrypted with TLS
	// if possible.
	UseTLS bool
}

Area defines a network area.

type AreaJoinResponse 

type AreaJoinResponse struct {
	// The address that was joined.
	Address string

	// Whether or not the join was a success.
	Joined bool

	// If we couldn't join, this is the message with information.
	Error string
}

AreaJoinResponse is returned when a join occurs and gives the result for each address.

type AutopilotConfiguration 

type AutopilotConfiguration struct {
	// CleanupDeadServers controls whether to remove dead servers from the Raft
	// peer list when a new server joins
	CleanupDeadServers bool

	// LastContactThreshold is the limit on the amount of time a server can go
	// without leader contact before being considered unhealthy.
	LastContactThreshold *ReadableDuration

	// MaxTrailingLogs is the amount of entries in the Raft Log that a server can
	// be behind before being considered unhealthy.
	MaxTrailingLogs uint64

	// ServerStabilizationTime is the minimum amount of time a server must be
	// in a stable, healthy state before it can be added to the cluster. Only
	// applicable with Raft protocol version 3 or higher.
	ServerStabilizationTime *ReadableDuration

	// (Enterprise-only) RedundancyZoneTag is the node tag to use for separating
	// servers into zones for redundancy. If left blank, this feature will be disabled.
	RedundancyZoneTag string

	// (Enterprise-only) DisableUpgradeMigration will disable Autopilot's upgrade migration
	// strategy of waiting until enough newer-versioned servers have been added to the
	// cluster before promoting them to voters.
	DisableUpgradeMigration bool

	// (Enterprise-only) UpgradeVersionTag is the node tag to use for version info when
	// performing upgrade migrations. If left blank, the Consul version will be used.
	UpgradeVersionTag string

	// CreateIndex holds the index corresponding the creation of this configuration.
	// This is a read-only field.
	CreateIndex uint64

	// ModifyIndex will be set to the index of the last update when retrieving the
	// Autopilot configuration. Resubmitting a configuration with
	// AutopilotCASConfiguration will perform a check-and-set operation which ensures
	// there hasn't been a subsequent update since the configuration was retrieved.
	ModifyIndex uint64
}

AutopilotConfiguration is used for querying/setting the Autopilot configuration. Autopilot helps manage operator tasks related to Consul servers like removing failed servers from the Raft quorum.

type BindingRuleBindType 

type BindingRuleBindType string

BindingRuleBindType is the type of binding rule mechanism used. 

const (
	// BindingRuleBindTypeService binds to a service identity with the given name.
	BindingRuleBindTypeService BindingRuleBindType = "service"

	// BindingRuleBindTypeRole binds to pre-existing roles with the given name.
	BindingRuleBindTypeRole BindingRuleBindType = "role"
)

type CAConfig 

type CAConfig struct {
	// Provider is the CA provider implementation to use.
	Provider string

	// Configuration is arbitrary configuration for the provider. This
	// should only contain primitive values and containers (such as lists
	// and maps).
	Config map[string]interface{}

	CreateIndex uint64
	ModifyIndex uint64
}

CAConfig is the structure for the Connect CA configuration.

type CARoot 

type CARoot struct {
	// ID is a globally unique ID (UUID) representing this CA root.
	ID string

	// Name is a human-friendly name for this CA root. This value is
	// opaque to Consul and is not used for anything internally.
	Name string

	// RootCertPEM is the PEM-encoded public certificate.
	RootCertPEM string `json:"RootCert"`

	// Active is true if this is the current active CA. This must only
	// be true for exactly one CA. For any method that modifies roots in the
	// state store, tests should be written to verify that multiple roots
	// cannot be active.
	Active bool

	CreateIndex uint64
	ModifyIndex uint64
}

CARoot represents a root CA certificate that is trusted.

type CARootList 

type CARootList struct {
	ActiveRootID string
	TrustDomain  string
	Roots        []*CARoot
}

CARootList is the structure for the results of listing roots.

type Catalog 

type Catalog struct {
	// contains filtered or unexported fields
}

Catalog can be used to query the Catalog endpoints

func (*Catalog) Connect 

func (c *Catalog) Connect(service, tag string, q *QueryOptions) ([]*CatalogService, *QueryMeta, error)

Connect is used to query catalog entries for a given Connect-enabled service

func (*Catalog) ConnectMultipleTags 

func (c *Catalog) ConnectMultipleTags(service string, tags []string, q *QueryOptions) ([]*CatalogService, *QueryMeta, error)

Supports multiple tags for filtering

func (*Catalog) Datacenters 

func (c *Catalog) Datacenters() ([]string, error)

Datacenters is used to query for all the known datacenters

func (*Catalog) Deregister 

func (c *Catalog) Deregister(dereg *CatalogDeregistration, q *WriteOptions) (*WriteMeta, error)

func (*Catalog) Node 

func (c *Catalog) Node(node string, q *QueryOptions) (*CatalogNode, *QueryMeta, error)

Node is used to query for service information about a single node

func (*Catalog) Nodes 

func (c *Catalog) Nodes(q *QueryOptions) ([]*Node, *QueryMeta, error)

Nodes is used to query all the known nodes

func (*Catalog) Register 

func (c *Catalog) Register(reg *CatalogRegistration, q *WriteOptions) (*WriteMeta, error)

func (*Catalog) Service 

func (c *Catalog) Service(service, tag string, q *QueryOptions) ([]*CatalogService, *QueryMeta, error)

Service is used to query catalog entries for a given service

func (*Catalog) ServiceMultipleTags 

func (c *Catalog) ServiceMultipleTags(service string, tags []string, q *QueryOptions) ([]*CatalogService, *QueryMeta, error)

Supports multiple tags for filtering

func (*Catalog) Services 

func (c *Catalog) Services(q *QueryOptions) (map[string][]string, *QueryMeta, error)

Services is used to query for all known services

type CatalogDeregistration 

type CatalogDeregistration struct {
	Node       string
	Address    string // Obsolete.
	Datacenter string
	ServiceID  string
	CheckID    string
}

type CatalogNode 

type CatalogNode struct {
	Node     *Node
	Services map[string]*AgentService
}

type CatalogRegistration 

type CatalogRegistration struct {
	ID              string
	Node            string
	Address         string
	TaggedAddresses map[string]string
	NodeMeta        map[string]string
	Datacenter      string
	Service         *AgentService
	Check           *AgentCheck
	Checks          HealthChecks
	SkipNodeUpdate  bool
}

type CatalogService 

type CatalogService struct {
	ID                       string
	Node                     string
	Address                  string
	Datacenter               string
	TaggedAddresses          map[string]string
	NodeMeta                 map[string]string
	ServiceID                string
	ServiceName              string
	ServiceAddress           string
	ServiceTaggedAddresses   map[string]ServiceAddress
	ServiceTags              []string
	ServiceMeta              map[string]string
	ServicePort              int
	ServiceWeights           Weights
	ServiceEnableTagOverride bool
	ServiceProxy             *AgentServiceConnectProxyConfig
	CreateIndex              uint64
	Checks                   HealthChecks
	ModifyIndex              uint64
}

type CheckOp 

type CheckOp string

CheckOp constants give possible operations available in a transaction. 

const (
	CheckGet       CheckOp = "get"
	CheckSet       CheckOp = "set"
	CheckCAS       CheckOp = "cas"
	CheckDelete    CheckOp = "delete"
	CheckDeleteCAS CheckOp = "delete-cas"
)

type CheckTxnOp 

type CheckTxnOp struct {
	Verb  CheckOp
	Check HealthCheck
}

CheckTxnOp defines a single operation inside a transaction.

type Client 

type Client struct {
	// contains filtered or unexported fields
}

Client provides a client to the Consul API

func NewClient 

func NewClient(config *Config) (*Client, error)

NewClient returns a new client

func (*Client) ACL 

func (c *Client) ACL() *ACL

ACL returns a handle to the ACL endpoints

func (*Client) Agent 

func (c *Client) Agent() *Agent

Agent returns a handle to the agent endpoints

func (*Client) Catalog 

func (c *Client) Catalog() *Catalog

Catalog returns a handle to the catalog endpoints

func (*Client) ConfigEntries 

func (c *Client) ConfigEntries() *ConfigEntries

Config returns a handle to the Config endpoints

func (*Client) Connect 

func (c *Client) Connect() *Connect

Connect returns a handle to the connect-related endpoints

func (*Client) Coordinate 

func (c *Client) Coordinate() *Coordinate

Coordinate returns a handle to the coordinate endpoints

func (*Client) Debug 

func (c *Client) Debug() *Debug

Debug returns a handle that exposes the internal debug endpoints.

func (*Client) DiscoveryChain 

func (c *Client) DiscoveryChain() *DiscoveryChain

DiscoveryChain returns a handle to the discovery-chain endpoints

func (*Client) Event 

func (c *Client) Event() *Event

Event returns a handle to the event endpoints

func (*Client) Health 

func (c *Client) Health() *Health

Health returns a handle to the health endpoints

func (*Client) KV 

func (c *Client) KV() *KV

KV is used to return a handle to the K/V apis

func (*Client) LockKey 

func (c *Client) LockKey(key string) (*Lock, error)

LockKey returns a handle to a lock struct which can be used to acquire and release the mutex. The key used must have write permissions.

func (*Client) LockOpts 

func (c *Client) LockOpts(opts *LockOptions) (*Lock, error)

LockOpts returns a handle to a lock struct which can be used to acquire and release the mutex. The key used must have write permissions.

func (*Client) Operator 

func (c *Client) Operator() *Operator

Operator returns a handle to the operator endpoints.

func (*Client) PreparedQuery 

func (c *Client) PreparedQuery() *PreparedQuery

PreparedQuery returns a handle to the prepared query endpoints.

func (*Client) Raw 

func (c *Client) Raw() *Raw

Raw returns a handle to query endpoints

func (*Client) SemaphoreOpts 

func (c *Client) SemaphoreOpts(opts *SemaphoreOptions) (*Semaphore, error)

SemaphoreOpts is used to create a Semaphore with the given options. The prefix must have write privileges, and the limit must be agreed upon by all contenders. If a Session is not provided, one will be created.

func (*Client) SemaphorePrefix 

func (c *Client) SemaphorePrefix(prefix string, limit int) (*Semaphore, error)

SemaphorePrefix is used to created a Semaphore which will operate at the given KV prefix and uses the given limit for the semaphore. The prefix must have write privileges, and the limit must be agreed upon by all contenders.

func (*Client) Session 

func (c *Client) Session() *Session

Session returns a handle to the session endpoints

func (*Client) Snapshot 

func (c *Client) Snapshot() *Snapshot

Snapshot returns a handle that exposes the snapshot endpoints.

func (*Client) Status 

func (c *Client) Status() *Status

Status returns a handle to the status endpoints

func (*Client) Txn 

func (c *Client) Txn() *Txn

Txn is used to return a handle to the K/V apis

type CommonCAProviderConfig 

type CommonCAProviderConfig struct {
	LeafCertTTL      time.Duration
	SkipValidate     bool
	CSRMaxPerSecond  float32
	CSRMaxConcurrent int
}

CommonCAProviderConfig is the common options available to all CA providers.

type CompiledDiscoveryChain 

type CompiledDiscoveryChain struct {
	ServiceName string
	Namespace   string
	Datacenter  string

	// CustomizationHash is a unique hash of any data that affects the
	// compilation of the discovery chain other than config entries or the
	// name/namespace/datacenter evaluation criteria.
	//
	// If set, this value should be used to prefix/suffix any generated load
	// balancer data plane objects to avoid sharing customized and
	// non-customized versions.
	CustomizationHash string

	// Protocol is the overall protocol shared by everything in the chain.
	Protocol string

	// StartNode is the first key into the Nodes map that should be followed
	// when walking the discovery chain.
	StartNode string

	// Nodes contains all nodes available for traversal in the chain keyed by a
	// unique name.  You can walk this by starting with StartNode.
	//
	// NOTE: The names should be treated as opaque values and are only
	// guaranteed to be consistent within a single compilation.
	Nodes map[string]*DiscoveryGraphNode

	// Targets is a list of all targets used in this chain.
	//
	// NOTE: The names should be treated as opaque values and are only
	// guaranteed to be consistent within a single compilation.
	Targets map[string]*DiscoveryTarget
}

type Config 

type Config struct {
	// Address is the address of the Consul server
	Address string

	// Scheme is the URI scheme for the Consul server
	Scheme string

	// Datacenter to use. If not provided, the default agent datacenter is used.
	Datacenter string

	// Transport is the Transport to use for the http client.
	Transport *http.Transport

	// HttpClient is the client to use. Default will be
	// used if not provided.
	HttpClient *http.Client

	// HttpAuth is the auth info to use for http access.
	HttpAuth *HttpBasicAuth

	// WaitTime limits how long a Watch will block. If not provided,
	// the agent default values will be used.
	WaitTime time.Duration

	// Token is used to provide a per-request ACL token
	// which overrides the agent's default token.
	Token string

	// TokenFile is a file containing the current token to use for this client.
	// If provided it is read once at startup and never again.
	TokenFile string

	TLSConfig TLSConfig
}

Config is used to configure the creation of a client

func DefaultConfig 

func DefaultConfig() *Config

DefaultConfig returns a default configuration for the client. By default this will pool and reuse idle connections to Consul. If you have a long-lived client object, this is the desired behavior and should make the most efficient use of the connections to Consul. If you don't reuse a client object, which is not recommended, then you may notice idle connections building up over time. To avoid this, use the DefaultNonPooledConfig() instead.

func DefaultNonPooledConfig 

func DefaultNonPooledConfig() *Config

DefaultNonPooledConfig returns a default configuration for the client which does not pool connections. This isn't a recommended configuration because it will reconnect to Consul on every request, but this is useful to avoid the accumulation of idle connections if you make many client objects during the lifetime of your application.

func (*Config) GenerateEnv 

func (c *Config) GenerateEnv() []string

type ConfigEntries 

type ConfigEntries struct {
	// contains filtered or unexported fields
}

ConfigEntries can be used to query the Config endpoints

func (*ConfigEntries) CAS 

func (conf *ConfigEntries) CAS(entry ConfigEntry, index uint64, w *WriteOptions) (bool, *WriteMeta, error)

func (*ConfigEntries) Delete 

func (conf *ConfigEntries) Delete(kind string, name string, w *WriteOptions) (*WriteMeta, error)

func (*ConfigEntries) Get 

func (conf *ConfigEntries) Get(kind string, name string, q *QueryOptions) (ConfigEntry, *QueryMeta, error)

func (*ConfigEntries) List 

func (conf *ConfigEntries) List(kind string, q *QueryOptions) ([]ConfigEntry, *QueryMeta, error)

func (*ConfigEntries) Set 

func (conf *ConfigEntries) Set(entry ConfigEntry, w *WriteOptions) (bool, *WriteMeta, error)

type ConfigEntry 

type ConfigEntry interface {
	GetKind() string
	GetName() string
	GetCreateIndex() uint64
	GetModifyIndex() uint64
}

func DecodeConfigEntry 

func DecodeConfigEntry(raw map[string]interface{}) (ConfigEntry, error)

DecodeConfigEntry will decode the result of using json.Unmarshal of a config entry into a map[string]interface{}.

Important caveats:

- This will NOT work if the map[string]interface{} was produced using HCL decoding as that requires more extensive parsing to work around the issues with map[string][]interface{} that arise.

- This will only decode fields using their camel case json field representations.

func DecodeConfigEntryFromJSON 

func DecodeConfigEntryFromJSON(data []byte) (ConfigEntry, error)

func MakeConfigEntry 

func MakeConfigEntry(kind, name string) (ConfigEntry, error)

type Connect 

type Connect struct {
	// contains filtered or unexported fields
}

Connect can be used to work with endpoints related to Connect, the feature for securely connecting services within Consul.

func (*Connect) CAGetConfig 

func (h *Connect) CAGetConfig(q *QueryOptions) (*CAConfig, *QueryMeta, error)

CAGetConfig returns the current CA configuration.

func (*Connect) CARoots 

func (h *Connect) CARoots(q *QueryOptions) (*CARootList, *QueryMeta, error)

CARoots queries the list of available roots.

func (*Connect) CASetConfig 

func (h *Connect) CASetConfig(conf *CAConfig, q *WriteOptions) (*WriteMeta, error)

CASetConfig sets the current CA configuration.

func (*Connect) IntentionCheck 

func (h *Connect) IntentionCheck(args *IntentionCheck, q *QueryOptions) (bool, *QueryMeta, error)

IntentionCheck returns whether a given source/destination would be allowed or not given the current set of intentions and the configuration of Consul.

func (*Connect) IntentionCreate 

func (c *Connect) IntentionCreate(ixn *Intention, q *WriteOptions) (string, *WriteMeta, error)

IntentionCreate will create a new intention. The ID in the given structure must be empty and a generate ID will be returned on success.

func (*Connect) IntentionDelete 

func (h *Connect) IntentionDelete(id string, q *WriteOptions) (*WriteMeta, error)

IntentionDelete deletes a single intention.

func (*Connect) IntentionGet 

func (h *Connect) IntentionGet(id string, q *QueryOptions) (*Intention, *QueryMeta, error)

IntentionGet retrieves a single intention.

func (*Connect) IntentionMatch 

func (h *Connect) IntentionMatch(args *IntentionMatch, q *QueryOptions) (map[string][]*Intention, *QueryMeta, error)

IntentionMatch returns the list of intentions that match a given source or destination. The returned intentions are ordered by precedence where result[0] is the highest precedence (if that matches, then that rule overrides all other rules).

Matching can be done for multiple names at the same time. The resulting map is keyed by the given names. Casing is preserved.

func (*Connect) IntentionUpdate 

func (c *Connect) IntentionUpdate(ixn *Intention, q *WriteOptions) (*WriteMeta, error)

IntentionUpdate will update an existing intention. The ID in the given structure must be non-empty.

func (*Connect) Intentions 

func (h *Connect) Intentions(q *QueryOptions) ([]*Intention, *QueryMeta, error)

Intentions returns the list of intentions.

type ConnectProxyConfig 

type ConnectProxyConfig struct {
	ProxyServiceID    string
	TargetServiceID   string
	TargetServiceName string
	ContentHash       string
	Config            map[string]interface{} `bexpr:"-"`
	Upstreams         []Upstream
}

ConnectProxyConfig is the response structure for agent-local proxy configuration.

type ConsulCAProviderConfig 

type ConsulCAProviderConfig struct {
	CommonCAProviderConfig `mapstructure:",squash"`

	PrivateKey     string
	RootCert       string
	RotationPeriod time.Duration
}

ConsulCAProviderConfig is the config for the built-in Consul CA provider.

func ParseConsulCAConfig 

func ParseConsulCAConfig(raw map[string]interface{}) (*ConsulCAProviderConfig, error)

ParseConsulCAConfig takes a raw config map and returns a parsed ConsulCAProviderConfig.

type Coordinate 

type Coordinate struct {
	// contains filtered or unexported fields
}

Coordinate can be used to query the coordinate endpoints

func (*Coordinate) Datacenters 

func (c *Coordinate) Datacenters() ([]*CoordinateDatacenterMap, error)

Datacenters is used to return the coordinates of all the servers in the WAN pool.

func (*Coordinate) Node 

func (c *Coordinate) Node(node string, q *QueryOptions) ([]*CoordinateEntry, *QueryMeta, error)

Node is used to return the coordinates of a single in the LAN pool.

func (*Coordinate) Nodes 

func (c *Coordinate) Nodes(q *QueryOptions) ([]*CoordinateEntry, *QueryMeta, error)

Nodes is used to return the coordinates of all the nodes in the LAN pool.

func (*Coordinate) Update 

func (c *Coordinate) Update(coord *CoordinateEntry, q *WriteOptions) (*WriteMeta, error)

Update inserts or updates the LAN coordinate of a node.

type CoordinateDatacenterMap 

type CoordinateDatacenterMap struct {
	Datacenter  string
	AreaID      string
	Coordinates []CoordinateEntry
}

CoordinateDatacenterMap has the coordinates for servers in a given datacenter and area. Network coordinates are only compatible within the same area.

type CoordinateEntry 

type CoordinateEntry struct {
	Node    string
	Segment string
	Coord   *coordinate.Coordinate
}

CoordinateEntry represents a node and its associated network coordinate.

type Debug 

type Debug struct {
	// contains filtered or unexported fields
}

Debug can be used to query the /debug/pprof endpoints to gather profiling information about the target agent.Debug

The agent must have enable_debug set to true for profiling to be enabled and for these endpoints to function.

func (*Debug) Goroutine 

func (d *Debug) Goroutine() ([]byte, error)

Goroutine returns a pprof goroutine profile

func (*Debug) Heap 

func (d *Debug) Heap() ([]byte, error)

Heap returns a pprof heap dump

func (*Debug) Profile 

func (d *Debug) Profile(seconds int) ([]byte, error)

Profile returns a pprof CPU profile for the specified number of seconds

func (*Debug) Trace 

func (d *Debug) Trace(seconds int) ([]byte, error)

Trace returns an execution trace

type DiscoveryChain 

type DiscoveryChain struct {
	// contains filtered or unexported fields
}

DiscoveryChain can be used to query the discovery-chain endpoints

func (*DiscoveryChain) Get 

func (d *DiscoveryChain) Get(name string, opts *DiscoveryChainOptions, q *QueryOptions) (*DiscoveryChainResponse, *QueryMeta, error)

type DiscoveryChainOptions 

type DiscoveryChainOptions struct {
	EvaluateInDatacenter string `json:"-"`

	// OverrideMeshGateway allows for the mesh gateway setting to be overridden
	// for any resolver in the compiled chain.
	OverrideMeshGateway MeshGatewayConfig `json:",omitempty"`

	// OverrideProtocol allows for the final protocol for the chain to be
	// altered.
	//
	// - If the chain ordinarily would be TCP and an L7 protocol is passed here
	// the chain will not include Routers or Splitters.
	//
	// - If the chain ordinarily would be L7 and TCP is passed here the chain
	// will not include Routers or Splitters.
	OverrideProtocol string `json:",omitempty"`

	// OverrideConnectTimeout allows for the ConnectTimeout setting to be
	// overridden for any resolver in the compiled chain.
	OverrideConnectTimeout time.Duration `json:",omitempty"`
}

type DiscoveryChainResponse 

type DiscoveryChainResponse struct {
	Chain *CompiledDiscoveryChain
}

type DiscoveryFailover 

type DiscoveryFailover struct {
	Targets []string
}

compiled form of ServiceResolverFailover

type DiscoveryGraphNode 

type DiscoveryGraphNode struct {
	Type string
	Name string // this is NOT necessarily a service

	// fields for Type==router
	Routes []*DiscoveryRoute

	// fields for Type==splitter
	Splits []*DiscoverySplit

	// fields for Type==resolver
	Resolver *DiscoveryResolver
}

DiscoveryGraphNode is a single node in the compiled discovery chain.

type DiscoveryResolver 

type DiscoveryResolver struct {
	Default        bool
	ConnectTimeout time.Duration
	Target         string
	Failover       *DiscoveryFailover
}

compiled form of ServiceResolverConfigEntry

func (*DiscoveryResolver) MarshalJSON 

func (r *DiscoveryResolver) MarshalJSON() ([]byte, error)

func (*DiscoveryResolver) UnmarshalJSON 

func (r *DiscoveryResolver) UnmarshalJSON(data []byte) error

type DiscoveryRoute 

type DiscoveryRoute struct {
	Definition *ServiceRoute
	NextNode   string
}

compiled form of ServiceRoute

type DiscoverySplit 

type DiscoverySplit struct {
	Weight   float32
	NextNode string
}

compiled form of ServiceSplit

type DiscoveryTarget 

type DiscoveryTarget struct {
	ID string

	Service       string
	ServiceSubset string
	Namespace     string
	Datacenter    string

	MeshGateway MeshGatewayConfig
	Subset      ServiceResolverSubset
	External    bool
	SNI         string
	Name        string
}

DiscoveryTarget represents all of the inputs necessary to use a resolver config entry to execute a catalog query to generate a list of service instances during discovery.

type Event 

type Event struct {
	// contains filtered or unexported fields
}

Event can be used to query the Event endpoints

func (*Event) Fire 

func (e *Event) Fire(params *UserEvent, q *WriteOptions) (string, *WriteMeta, error)

Fire is used to fire a new user event. Only the Name, Payload and Filters are respected. This returns the ID or an associated error. Cross DC requests are supported.

func (*Event) IDToIndex 

func (e *Event) IDToIndex(uuid string) uint64

IDToIndex is a bit of a hack. This simulates the index generation to convert an event ID into a WaitIndex.

func (*Event) List 

func (e *Event) List(name string, q *QueryOptions) ([]*UserEvent, *QueryMeta, error)

List is used to get the most recent events an agent has received. This list can be optionally filtered by the name. This endpoint supports quasi-blocking queries. The index is not monotonic, nor does it provide provide LastContact or KnownLeader.

type GaugeValue 

type GaugeValue struct {
	Name   string
	Value  float32
	Labels map[string]string
}

GaugeValue stores one value that is updated as time goes on, such as the amount of memory allocated.

type Health 

type Health struct {
	// contains filtered or unexported fields
}

Health can be used to query the Health endpoints

func (*Health) Checks 

func (h *Health) Checks(service string, q *QueryOptions) (HealthChecks, *QueryMeta, error)

Checks is used to return the checks associated with a service

func (*Health) Connect 

func (h *Health) Connect(service, tag string, passingOnly bool, q *QueryOptions) ([]*ServiceEntry, *QueryMeta, error)

Connect is equivalent to Service except that it will only return services which are Connect-enabled and will returns the connection address for Connect client's to use which may be a proxy in front of the named service. If passingOnly is true only instances where both the service and any proxy are healthy will be returned.

func (*Health) ConnectMultipleTags 

func (h *Health) ConnectMultipleTags(service string, tags []string, passingOnly bool, q *QueryOptions) ([]*ServiceEntry, *QueryMeta, error)

func (*Health) Node 

func (h *Health) Node(node string, q *QueryOptions) (HealthChecks, *QueryMeta, error)

Node is used to query for checks belonging to a given node

func (*Health) Service 

func (h *Health) Service(service, tag string, passingOnly bool, q *QueryOptions) ([]*ServiceEntry, *QueryMeta, error)

Service is used to query health information along with service info for a given service. It can optionally do server-side filtering on a tag or nodes with passing health checks only.

func (*Health) ServiceMultipleTags 

func (h *Health) ServiceMultipleTags(service string, tags []string, passingOnly bool, q *QueryOptions) ([]*ServiceEntry, *QueryMeta, error)

func (*Health) State 

func (h *Health) State(state string, q *QueryOptions) (HealthChecks, *QueryMeta, error)

State is used to retrieve all the checks in a given state. The wildcard "any" state can also be used for all checks.

type HealthCheck 

type HealthCheck struct {
	Node        string
	CheckID     string
	Name        string
	Status      string
	Notes       string
	Output      string
	ServiceID   string
	ServiceName string
	ServiceTags []string

	Definition HealthCheckDefinition

	CreateIndex uint64
	ModifyIndex uint64
}

HealthCheck is used to represent a single check

type HealthCheckDefinition 

type HealthCheckDefinition struct {
	HTTP                                   string
	Header                                 map[string][]string
	Method                                 string
	TLSSkipVerify                          bool
	TCP                                    string
	IntervalDuration                       time.Duration `json:"-"`
	TimeoutDuration                        time.Duration `json:"-"`
	DeregisterCriticalServiceAfterDuration time.Duration `json:"-"`

	// DEPRECATED in Consul 1.4.1. Use the above time.Duration fields instead.
	Interval                       ReadableDuration
	Timeout                        ReadableDuration
	DeregisterCriticalServiceAfter ReadableDuration
}

HealthCheckDefinition is used to store the details about a health check's execution.

func (*HealthCheckDefinition) MarshalJSON 

func (d *HealthCheckDefinition) MarshalJSON() ([]byte, error)

func (*HealthCheckDefinition) UnmarshalJSON 

func (d *HealthCheckDefinition) UnmarshalJSON(data []byte) error

type HealthChecks 

type HealthChecks []*HealthCheck

HealthChecks is a collection of HealthCheck structs.

func (HealthChecks) AggregatedStatus 

func (c HealthChecks) AggregatedStatus() string

AggregatedStatus returns the "best" status for the list of health checks. Because a given entry may have many service and node-level health checks attached, this function determines the best representative of the status as as single string using the following heuristic: 

maintenance > critical > warning > passing

type HttpBasicAuth 

type HttpBasicAuth struct {
	// Username to use for HTTP Basic Authentication
	Username string

	// Password to use for HTTP Basic Authentication
	Password string
}

HttpBasicAuth is used to authenticate http client with HTTP Basic Authentication

type Intention 

type Intention struct {
	// ID is the UUID-based ID for the intention, always generated by Consul.
	ID string

	// Description is a human-friendly description of this intention.
	// It is opaque to Consul and is only stored and transferred in API
	// requests.
	Description string

	// SourceNS, SourceName are the namespace and name, respectively, of
	// the source service. Either of these may be the wildcard "*", but only
	// the full value can be a wildcard. Partial wildcards are not allowed.
	// The source may also be a non-Consul service, as specified by SourceType.
	//
	// DestinationNS, DestinationName is the same, but for the destination
	// service. The same rules apply. The destination is always a Consul
	// service.
	SourceNS, SourceName           string
	DestinationNS, DestinationName string

	// SourceType is the type of the value for the source.
	SourceType IntentionSourceType

	// Action is whether this is a whitelist or blacklist intention.
	Action IntentionAction

	// DefaultAddr, DefaultPort of the local listening proxy (if any) to
	// make this connection.
	DefaultAddr string
	DefaultPort int

	// Meta is arbitrary metadata associated with the intention. This is
	// opaque to Consul but is served in API responses.
	Meta map[string]string

	// Precedence is the order that the intention will be applied, with
	// larger numbers being applied first. This is a read-only field, on
	// any intention update it is updated.
	Precedence int

	// CreatedAt and UpdatedAt keep track of when this record was created
	// or modified.
	CreatedAt, UpdatedAt time.Time

	// Hash of the contents of the intention
	//
	// This is needed mainly for replication purposes. When replicating from
	// one DC to another keeping the content Hash will allow us to detect
	// content changes more efficiently than checking every single field
	Hash []byte

	CreateIndex uint64
	ModifyIndex uint64
}

Intention defines an intention for the Connect Service Graph. This defines the allowed or denied behavior of a connection between two services using Connect.

func (*Intention) DestinationString 

func (i *Intention) DestinationString() string

DestinationString returns the namespace/name format for the source, or just "name" if the namespace is the default namespace.

func (*Intention) SourceString 

func (i *Intention) SourceString() string

SourceString returns the namespace/name format for the source, or just "name" if the namespace is the default namespace.

func (*Intention) String 

func (i *Intention) String() string

String returns human-friendly output describing ths intention.

type IntentionAction 

type IntentionAction string

IntentionAction is the action that the intention represents. This can be "allow" or "deny" to whitelist or blacklist intentions. 

const (
	IntentionActionAllow IntentionAction = "allow"
	IntentionActionDeny  IntentionAction = "deny"
)

type IntentionCheck 

type IntentionCheck struct {
	// Source and Destination are the source and destination values to
	// check. The destination is always a Consul service, but the source
	// may be other values as defined by the SourceType.
	Source, Destination string

	// SourceType is the type of the value for the source.
	SourceType IntentionSourceType
}

IntentionCheck are the arguments for the intention check API. For more documentation see the IntentionCheck function.

type IntentionMatch 

type IntentionMatch struct {
	By    IntentionMatchType
	Names []string
}

IntentionMatch are the arguments for the intention match API.

type IntentionMatchType 

type IntentionMatchType string

IntentionMatchType is the target for a match request. For example, matching by source will look for all intentions that match the given source value. 

const (
	IntentionMatchSource      IntentionMatchType = "source"
	IntentionMatchDestination IntentionMatchType = "destination"
)

type IntentionSourceType 

type IntentionSourceType string

IntentionSourceType is the type of the source within an intention. 

const (
	// IntentionSourceConsul is a service within the Consul catalog.
	IntentionSourceConsul IntentionSourceType = "consul"
)

type KV 

type KV struct {
	// contains filtered or unexported fields
}

KV is used to manipulate the K/V API

func (*KV) Acquire 

func (k *KV) Acquire(p *KVPair, q *WriteOptions) (bool, *WriteMeta, error)

Acquire is used for a lock acquisition operation. The Key, Flags, Value and Session are respected. Returns true on success or false on failures.

func (*KV) CAS 

func (k *KV) CAS(p *KVPair, q *WriteOptions) (bool, *WriteMeta, error)

CAS is used for a Check-And-Set operation. The Key, ModifyIndex, Flags and Value are respected. Returns true on success or false on failures.

func (*KV) Delete 

func (k *KV) Delete(key string, w *WriteOptions) (*WriteMeta, error)

Delete is used to delete a single key

func (*KV) DeleteCAS 

func (k *KV) DeleteCAS(p *KVPair, q *WriteOptions) (bool, *WriteMeta, error)

DeleteCAS is used for a Delete Check-And-Set operation. The Key and ModifyIndex are respected. Returns true on success or false on failures.

func (*KV) DeleteTree 

func (k *KV) DeleteTree(prefix string, w *WriteOptions) (*WriteMeta, error)

DeleteTree is used to delete all keys under a prefix

func (*KV) Get 

func (k *KV) Get(key string, q *QueryOptions) (*KVPair, *QueryMeta, error)

Get is used to lookup a single key. The returned pointer to the KVPair will be nil if the key does not exist.

func (*KV) Keys 

func (k *KV) Keys(prefix, separator string, q *QueryOptions) ([]string, *QueryMeta, error)

Keys is used to list all the keys under a prefix. Optionally, a separator can be used to limit the responses.

func (*KV) List 

func (k *KV) List(prefix string, q *QueryOptions) (KVPairs, *QueryMeta, error)

List is used to lookup all keys under a prefix

func (*KV) Put 

func (k *KV) Put(p *KVPair, q *WriteOptions) (*WriteMeta, error)

Put is used to write a new value. Only the Key, Flags and Value is respected.

func (*KV) Release 

func (k *KV) Release(p *KVPair, q *WriteOptions) (bool, *WriteMeta, error)

Release is used for a lock release operation. The Key, Flags, Value and Session are respected. Returns true on success or false on failures.

func (*KV) Txn 

func (k *KV) Txn(txn KVTxnOps, q *QueryOptions) (bool, *KVTxnResponse, *QueryMeta, error)

The Txn function has been deprecated from the KV object; please see the Txn object for more information about Transactions.

type KVOp 

type KVOp string

KVOp constants give possible operations available in a transaction. 

const (
	KVSet            KVOp = "set"
	KVDelete         KVOp = "delete"
	KVDeleteCAS      KVOp = "delete-cas"
	KVDeleteTree     KVOp = "delete-tree"
	KVCAS            KVOp = "cas"
	KVLock           KVOp = "lock"
	KVUnlock         KVOp = "unlock"
	KVGet            KVOp = "get"
	KVGetTree        KVOp = "get-tree"
	KVCheckSession   KVOp = "check-session"
	KVCheckIndex     KVOp = "check-index"
	KVCheckNotExists KVOp = "check-not-exists"
)

type KVPair 

type KVPair struct {
	// Key is the name of the key. It is also part of the URL path when accessed
	// via the API.
	Key string

	// CreateIndex holds the index corresponding the creation of this KVPair. This
	// is a read-only field.
	CreateIndex uint64

	// ModifyIndex is used for the Check-And-Set operations and can also be fed
	// back into the WaitIndex of the QueryOptions in order to perform blocking
	// queries.
	ModifyIndex uint64

	// LockIndex holds the index corresponding to a lock on this key, if any. This
	// is a read-only field.
	LockIndex uint64

	// Flags are any user-defined flags on the key. It is up to the implementer
	// to check these values, since Consul does not treat them specially.
	Flags uint64

	// Value is the value for the key. This can be any value, but it will be
	// base64 encoded upon transport.
	Value []byte

	// Session is a string representing the ID of the session. Any other
	// interactions with this key over the same session must specify the same
	// session ID.
	Session string
}

KVPair is used to represent a single K/V entry

type KVPairs 

type KVPairs []*KVPair

KVPairs is a list of KVPair objects

type KVTxnOp 

type KVTxnOp struct {
	Verb    KVOp
	Key     string
	Value   []byte
	Flags   uint64
	Index   uint64
	Session string
}

KVTxnOp defines a single operation inside a transaction.

type KVTxnOps 

type KVTxnOps []*KVTxnOp

KVTxnOps defines a set of operations to be performed inside a single transaction.

type KVTxnResponse 

type KVTxnResponse struct {
	Results []*KVPair
	Errors  TxnErrors
}

KVTxnResponse has the outcome of a transaction.

type KeyringResponse 

type KeyringResponse struct {
	// Whether this response is for a WAN ring
	WAN bool

	// The datacenter name this request corresponds to
	Datacenter string

	// Segment has the network segment this request corresponds to.
	Segment string

	// Messages has information or errors from serf
	Messages map[string]string `json:",omitempty"`

	// A map of the encryption keys to the number of nodes they're installed on
	Keys map[string]int

	// The total number of nodes in this ring
	NumNodes int
}

KeyringResponse is returned when listing the gossip encryption keys

type KubernetesAuthMethodConfig 

type KubernetesAuthMethodConfig struct {
	Host              string `json:",omitempty"`
	CACert            string `json:",omitempty"`
	ServiceAccountJWT string `json:",omitempty"`
}

KubernetesAuthMethodConfig is the config for the built-in Consul auth method for Kubernetes.

func ParseKubernetesAuthMethodConfig 

func ParseKubernetesAuthMethodConfig(raw map[string]interface{}) (*KubernetesAuthMethodConfig, error)

ParseKubernetesAuthMethodConfig takes a raw config map and returns a parsed KubernetesAuthMethodConfig.

func (*KubernetesAuthMethodConfig) RenderToConfig 

func (c *KubernetesAuthMethodConfig) RenderToConfig() map[string]interface{}

RenderToConfig converts this into a map[string]interface{} suitable for use in the ACLAuthMethod.Config field.

type LeafCert 

type LeafCert struct {
	// SerialNumber is the unique serial number for this certificate.
	// This is encoded in standard hex separated by :.
	SerialNumber string

	// CertPEM and PrivateKeyPEM are the PEM-encoded certificate and private
	// key for that cert, respectively. This should not be stored in the
	// state store, but is present in the sign API response.
	CertPEM       string `json:",omitempty"`
	PrivateKeyPEM string `json:",omitempty"`

	// Service is the name of the service for which the cert was issued.
	// ServiceURI is the cert URI value.
	Service    string
	ServiceURI string

	// ValidAfter and ValidBefore are the validity periods for the
	// certificate.
	ValidAfter  time.Time
	ValidBefore time.Time

	CreateIndex uint64
	ModifyIndex uint64
}

LeafCert is a certificate that has been issued by a Connect CA.

type License 

type License struct {
	// The unique identifier of the license
	LicenseID string `json:"license_id"`

	// The customer ID associated with the license
	CustomerID string `json:"customer_id"`

	// If set, an identifier that should be used to lock the license to a
	// particular site, cluster, etc.
	InstallationID string `json:"installation_id"`

	// The time at which the license was issued
	IssueTime time.Time `json:"issue_time"`

	// The time at which the license starts being valid
	StartTime time.Time `json:"start_time"`

	// The time after which the license expires
	ExpirationTime time.Time `json:"expiration_time"`

	// The time at which the license ceases to function and can
	// no longer be used in any capacity
	TerminationTime time.Time `json:"termination_time"`

	// The product the license is valid for
	Product string `json:"product"`

	// License Specific Flags
	Flags map[string]interface{} `json:"flags"`

	// List of features enabled by the license
	Features []string `json:"features"`
}

type LicenseReply 

type LicenseReply struct {
	Valid    bool
	License  *License
	Warnings []string
}

type Lock 

type Lock struct {
	// contains filtered or unexported fields
}

Lock is used to implement client-side leader election. It is follows the algorithm as described here: https://www.consul.io/docs/guides/leader-election.html.

func (*Lock) Destroy 

func (l *Lock) Destroy() error

Destroy is used to cleanup the lock entry. It is not necessary to invoke. It will fail if the lock is in use.

func (*Lock) Lock 

func (l *Lock) Lock(stopCh <-chan struct{}) (<-chan struct{}, error)

Lock attempts to acquire the lock and blocks while doing so. Providing a non-nil stopCh can be used to abort the lock attempt. Returns a channel that is closed if our lock is lost or an error. This channel could be closed at any time due to session invalidation, communication errors, operator intervention, etc. It is NOT safe to assume that the lock is held until Unlock() unless the Session is specifically created without any associated health checks. By default Consul sessions prefer liveness over safety and an application must be able to handle the lock being lost.

func (*Lock) Unlock 

func (l *Lock) Unlock() error

Unlock released the lock. It is an error to call this if the lock is not currently held.

type LockOptions 

type LockOptions struct {
	Key              string        // Must be set and have write permissions
	Value            []byte        // Optional, value to associate with the lock
	Session          string        // Optional, created if not specified
	SessionOpts      *SessionEntry // Optional, options to use when creating a session
	SessionName      string        // Optional, defaults to DefaultLockSessionName (ignored if SessionOpts is given)
	SessionTTL       string        // Optional, defaults to DefaultLockSessionTTL (ignored if SessionOpts is given)
	MonitorRetries   int           // Optional, defaults to 0 which means no retries
	MonitorRetryTime time.Duration // Optional, defaults to DefaultMonitorRetryTime
	LockWaitTime     time.Duration // Optional, defaults to DefaultLockWaitTime
	LockTryOnce      bool          // Optional, defaults to false which means try forever
}

LockOptions is used to parameterize the Lock behavior.

type MembersOpts 

type MembersOpts struct {
	// WAN is whether to show members from the WAN.
	WAN bool

	// Segment is the LAN segment to show members for. Setting this to the
	// AllSegments value above will show members in all segments.
	Segment string
}

MembersOpts is used for querying member information.

type MeshGatewayConfig 

type MeshGatewayConfig struct {
	// Mode is the mode that should be used for the upstream connection.
	Mode MeshGatewayMode `json:",omitempty"`
}

MeshGatewayConfig controls how Mesh Gateways are used for upstream Connect services

type MeshGatewayMode 

type MeshGatewayMode string
const (
	// MeshGatewayModeDefault represents no specific mode and should
	// be used to indicate that a different layer of the configuration
	// chain should take precedence
	MeshGatewayModeDefault MeshGatewayMode = ""

	// MeshGatewayModeNone represents that the Upstream Connect connections
	// should be direct and not flow through a mesh gateway.
	MeshGatewayModeNone MeshGatewayMode = "none"

	// MeshGatewayModeLocal represents that the Upstrea Connect connections
	// should be made to a mesh gateway in the local datacenter. This is
	MeshGatewayModeLocal MeshGatewayMode = "local"

	// MeshGatewayModeRemote represents that the Upstream Connect connections
	// should be made to a mesh gateway in a remote datacenter.
	MeshGatewayModeRemote MeshGatewayMode = "remote"
)

type MetricsInfo 

type MetricsInfo struct {
	Timestamp string
	Gauges    []GaugeValue
	Points    []PointValue
	Counters  []SampledValue
	Samples   []SampledValue
}

Metrics info is used to store different types of metric values from the agent.

type Node 

type Node struct {
	ID              string
	Node            string
	Address         string
	Datacenter      string
	TaggedAddresses map[string]string
	Meta            map[string]string
	CreateIndex     uint64
	ModifyIndex     uint64
}

type NodeOp 

type NodeOp string

NodeOp constants give possible operations available in a transaction. 

const (
	NodeGet       NodeOp = "get"
	NodeSet       NodeOp = "set"
	NodeCAS       NodeOp = "cas"
	NodeDelete    NodeOp = "delete"
	NodeDeleteCAS NodeOp = "delete-cas"
)

type NodeTxnOp 

type NodeTxnOp struct {
	Verb NodeOp
	Node Node
}

NodeTxnOp defines a single operation inside a transaction.

type Operator 

type Operator struct {
	// contains filtered or unexported fields
}

Operator can be used to perform low-level operator tasks for Consul.

func (*Operator) AreaCreate 

func (op *Operator) AreaCreate(area *Area, q *WriteOptions) (string, *WriteMeta, error)

AreaCreate will create a new network area. The ID in the given structure must be empty and a generated ID will be returned on success.

func (*Operator) AreaDelete 

func (op *Operator) AreaDelete(areaID string, q *WriteOptions) (*WriteMeta, error)

AreaDelete deletes the given network area.

func (*Operator) AreaGet 

func (op *Operator) AreaGet(areaID string, q *QueryOptions) ([]*Area, *QueryMeta, error)

AreaGet returns a single network area.

func (*Operator) AreaJoin 

func (op *Operator) AreaJoin(areaID string, addresses []string, q *WriteOptions) ([]*AreaJoinResponse, *WriteMeta, error)

AreaJoin attempts to join the given set of join addresses to the given network area. See the Area structure for details about join addresses.

func (*Operator) AreaList 

func (op *Operator) AreaList(q *QueryOptions) ([]*Area, *QueryMeta, error)

AreaList returns all the available network areas.

func (*Operator) AreaMembers 

func (op *Operator) AreaMembers(areaID string, q *QueryOptions) ([]*SerfMember, *QueryMeta, error)

AreaMembers lists the Serf information about the members in the given area.

func (*Operator) AreaUpdate 

func (op *Operator) AreaUpdate(areaID string, area *Area, q *WriteOptions) (string, *WriteMeta, error)

AreaUpdate will update the configuration of the network area with the given ID.

func (*Operator) AutopilotCASConfiguration 

func (op *Operator) AutopilotCASConfiguration(conf *AutopilotConfiguration, q *WriteOptions) (bool, error)

AutopilotCASConfiguration is used to perform a Check-And-Set update on the Autopilot configuration. The ModifyIndex value will be respected. Returns true on success or false on failures.

func (*Operator) AutopilotGetConfiguration 

func (op *Operator) AutopilotGetConfiguration(q *QueryOptions) (*AutopilotConfiguration, error)

AutopilotGetConfiguration is used to query the current Autopilot configuration.

func (*Operator) AutopilotServerHealth 

func (op *Operator) AutopilotServerHealth(q *QueryOptions) (*OperatorHealthReply, error)

AutopilotServerHealth

func (*Operator) AutopilotSetConfiguration 

func (op *Operator) AutopilotSetConfiguration(conf *AutopilotConfiguration, q *WriteOptions) error

AutopilotSetConfiguration is used to set the current Autopilot configuration.

func (*Operator) KeyringInstall 

func (op *Operator) KeyringInstall(key string, q *WriteOptions) error

KeyringInstall is used to install a new gossip encryption key into the cluster

func (*Operator) KeyringList 

func (op *Operator) KeyringList(q *QueryOptions) ([]*KeyringResponse, error)

KeyringList is used to list the gossip keys installed in the cluster

func (*Operator) KeyringRemove 

func (op *Operator) KeyringRemove(key string, q *WriteOptions) error

KeyringRemove is used to remove a gossip encryption key from the cluster

func (*Operator) KeyringUse 

func (op *Operator) KeyringUse(key string, q *WriteOptions) error

KeyringUse is used to change the active gossip encryption key

func (*Operator) LicenseGet 

func (op *Operator) LicenseGet(q *QueryOptions) (*LicenseReply, error)

func (*Operator) LicenseGetSigned 

func (op *Operator) LicenseGetSigned(q *QueryOptions) (string, error)

func (*Operator) LicensePut 

func (op *Operator) LicensePut(license string, opts *WriteOptions) (*LicenseReply, error)

func (*Operator) LicenseReset 

func (op *Operator) LicenseReset(opts *WriteOptions) (*LicenseReply, error)

LicenseReset will reset the license to the builtin one if it is still valid. If the builtin license is invalid, the current license stays active.

func (*Operator) RaftGetConfiguration 

func (op *Operator) RaftGetConfiguration(q *QueryOptions) (*RaftConfiguration, error)

RaftGetConfiguration is used to query the current Raft peer set.

func (*Operator) RaftRemovePeerByAddress 

func (op *Operator) RaftRemovePeerByAddress(address string, q *WriteOptions) error

RaftRemovePeerByAddress is used to kick a stale peer (one that it in the Raft quorum but no longer known to Serf or the catalog) by address in the form of "IP:port".

func (*Operator) RaftRemovePeerByID 

func (op *Operator) RaftRemovePeerByID(id string, q *WriteOptions) error

RaftRemovePeerByID is used to kick a stale peer (one that it in the Raft quorum but no longer known to Serf or the catalog) by ID.

func (*Operator) SegmentList 

func (op *Operator) SegmentList(q *QueryOptions) ([]string, *QueryMeta, error)

SegmentList returns all the available LAN segments.

type OperatorHealthReply 

type OperatorHealthReply struct {
	// Healthy is true if all the servers in the cluster are healthy.
	Healthy bool

	// FailureTolerance is the number of healthy servers that could be lost without
	// an outage occurring.
	FailureTolerance int

	// Servers holds the health of each server.
	Servers []ServerHealth
}

OperatorHealthReply is a representation of the overall health of the cluster

type PointValue 

type PointValue struct {
	Name   string
	Points []float32
}

PointValue holds a series of points for a metric.

type PreparedQuery 

type PreparedQuery struct {
	// contains filtered or unexported fields
}

PreparedQuery can be used to query the prepared query endpoints.

func (*PreparedQuery) Create 

func (c *PreparedQuery) Create(query *PreparedQueryDefinition, q *WriteOptions) (string, *WriteMeta, error)

Create makes a new prepared query. The ID of the new query is returned.

func (*PreparedQuery) Delete 

func (c *PreparedQuery) Delete(queryID string, q *WriteOptions) (*WriteMeta, error)

Delete is used to delete a specific prepared query.

func (*PreparedQuery) Execute 

func (c *PreparedQuery) Execute(queryIDOrName string, q *QueryOptions) (*PreparedQueryExecuteResponse, *QueryMeta, error)

Execute is used to execute a specific prepared query. You can execute using a query ID or name.

func (*PreparedQuery) Get 

func (c *PreparedQuery) Get(queryID string, q *QueryOptions) ([]*PreparedQueryDefinition, *QueryMeta, error)

Get is used to fetch a specific prepared query.

func (*PreparedQuery) List 

func (c *PreparedQuery) List(q *QueryOptions) ([]*PreparedQueryDefinition, *QueryMeta, error)

List is used to fetch all the prepared queries (always requires a management token).

func (*PreparedQuery) Update 

func (c *PreparedQuery) Update(query *PreparedQueryDefinition, q *WriteOptions) (*WriteMeta, error)

Update makes updates to an existing prepared query.

type PreparedQueryDefinition 

type PreparedQueryDefinition struct {
	// ID is this UUID-based ID for the query, always generated by Consul.
	ID string

	// Name is an optional friendly name for the query supplied by the
	// user. NOTE - if this feature is used then it will reduce the security
	// of any read ACL associated with this query/service since this name
	// can be used to locate nodes with supplying any ACL.
	Name string

	// Session is an optional session to tie this query's lifetime to. If
	// this is omitted then the query will not expire.
	Session string

	// Token is the ACL token used when the query was created, and it is
	// used when a query is subsequently executed. This token, or a token
	// with management privileges, must be used to change the query later.
	Token string

	// Service defines a service query (leaving things open for other types
	// later).
	Service ServiceQuery

	// DNS has options that control how the results of this query are
	// served over DNS.
	DNS QueryDNSOptions

	// Template is used to pass through the arguments for creating a
	// prepared query with an attached template. If a template is given,
	// interpolations are possible in other struct fields.
	Template QueryTemplate
}

PreparedQueryDefinition defines a complete prepared query.

type PreparedQueryExecuteResponse 

type PreparedQueryExecuteResponse struct {
	// Service is the service that was queried.
	Service string

	// Nodes has the nodes that were output by the query.
	Nodes []ServiceEntry

	// DNS has the options for serving these results over DNS.
	DNS QueryDNSOptions

	// Datacenter is the datacenter that these results came from.
	Datacenter string

	// Failovers is a count of how many times we had to query a remote
	// datacenter.
	Failovers int
}

PreparedQueryExecuteResponse has the results of executing a query.

type ProxyConfigEntry 

type ProxyConfigEntry struct {
	Kind        string
	Name        string
	Config      map[string]interface{} `json:",omitempty"`
	MeshGateway MeshGatewayConfig      `json:",omitempty"`
	CreateIndex uint64
	ModifyIndex uint64
}

func (*ProxyConfigEntry) GetCreateIndex 

func (p *ProxyConfigEntry) GetCreateIndex() uint64

func (*ProxyConfigEntry) GetKind 

func (p *ProxyConfigEntry) GetKind() string

func (*ProxyConfigEntry) GetModifyIndex 

func (p *ProxyConfigEntry) GetModifyIndex() uint64

func (*ProxyConfigEntry) GetName 

func (p *ProxyConfigEntry) GetName() string

type QueryDNSOptions 

type QueryDNSOptions struct {
	// TTL is the time to live for the served DNS results.
	TTL string
}

QueryDNSOptions controls settings when query results are served over DNS.

type QueryDatacenterOptions 

type QueryDatacenterOptions struct {
	// NearestN is set to the number of remote datacenters to try, based on
	// network coordinates.
	NearestN int

	// Datacenters is a fixed list of datacenters to try after NearestN. We
	// never try a datacenter multiple times, so those are subtracted from
	// this list before proceeding.
	Datacenters []string
}

QueryDatacenterOptions sets options about how we fail over if there are no healthy nodes in the local datacenter.

type QueryMeta 

type QueryMeta struct {
	// LastIndex. This can be used as a WaitIndex to perform
	// a blocking query
	LastIndex uint64

	// LastContentHash. This can be used as a WaitHash to perform a blocking query
	// for endpoints that support hash-based blocking. Endpoints that do not
	// support it will return an empty hash.
	LastContentHash string

	// Time of last contact from the leader for the
	// server servicing the request
	LastContact time.Duration

	// Is there a known leader
	KnownLeader bool

	// How long did the request take
	RequestTime time.Duration

	// Is address translation enabled for HTTP responses on this agent
	AddressTranslationEnabled bool

	// CacheHit is true if the result was served from agent-local cache.
	CacheHit bool

	// CacheAge is set if request was ?cached and indicates how stale the cached
	// response is.
	CacheAge time.Duration
}

QueryMeta is used to return meta data about a query

type QueryOptions 

type QueryOptions struct {
	// Providing a datacenter overwrites the DC provided
	// by the Config
	Datacenter string

	// AllowStale allows any Consul server (non-leader) to service
	// a read. This allows for lower latency and higher throughput
	AllowStale bool

	// RequireConsistent forces the read to be fully consistent.
	// This is more expensive but prevents ever performing a stale
	// read.
	RequireConsistent bool

	// UseCache requests that the agent cache results locally. See
	// https://www.consul.io/api/features/caching.html for more details on the
	// semantics.
	UseCache bool

	// MaxAge limits how old a cached value will be returned if UseCache is true.
	// If there is a cached response that is older than the MaxAge, it is treated
	// as a cache miss and a new fetch invoked. If the fetch fails, the error is
	// returned. Clients that wish to allow for stale results on error can set
	// StaleIfError to a longer duration to change this behavior. It is ignored
	// if the endpoint supports background refresh caching. See
	// https://www.consul.io/api/features/caching.html for more details.
	MaxAge time.Duration

	// StaleIfError specifies how stale the client will accept a cached response
	// if the servers are unavailable to fetch a fresh one. Only makes sense when
	// UseCache is true and MaxAge is set to a lower, non-zero value. It is
	// ignored if the endpoint supports background refresh caching. See
	// https://www.consul.io/api/features/caching.html for more details.
	StaleIfError time.Duration

	// WaitIndex is used to enable a blocking query. Waits
	// until the timeout or the next index is reached
	WaitIndex uint64

	// WaitHash is used by some endpoints instead of WaitIndex to perform blocking
	// on state based on a hash of the response rather than a monotonic index.
	// This is required when the state being blocked on is not stored in Raft, for
	// example agent-local proxy configuration.
	WaitHash string

	// WaitTime is used to bound the duration of a wait.
	// Defaults to that of the Config, but can be overridden.
	WaitTime time.Duration

	// Token is used to provide a per-request ACL token
	// which overrides the agent's default token.
	Token string

	// Near is used to provide a node name that will sort the results
	// in ascending order based on the estimated round trip time from
	// that node. Setting this to "_agent" will use the agent's node
	// for the sort.
	Near string

	// NodeMeta is used to filter results by nodes with the given
	// metadata key/value pairs. Currently, only one key/value pair can
	// be provided for filtering.
	NodeMeta map[string]string

	// RelayFactor is used in keyring operations to cause responses to be
	// relayed back to the sender through N other random nodes. Must be
	// a value from 0 to 5 (inclusive).
	RelayFactor uint8

	// LocalOnly is used in keyring list operation to force the keyring
	// query to only hit local servers (no WAN traffic).
	LocalOnly bool

	// Connect filters prepared query execution to only include Connect-capable
	// services. This currently affects prepared query execution.
	Connect bool

	// Filter requests filtering data prior to it being returned. The string
	// is a go-bexpr compatible expression.
	Filter string
	// contains filtered or unexported fields
}

QueryOptions are used to parameterize a query

func (*QueryOptions) Context 

func (o *QueryOptions) Context() context.Context

func (*QueryOptions) WithContext 

func (o *QueryOptions) WithContext(ctx context.Context) *QueryOptions

type QueryTemplate 

type QueryTemplate struct {
	// Type specifies the type of the query template. Currently only
	// "name_prefix_match" is supported. This field is required.
	Type string

	// Regexp allows specifying a regex pattern to match against the name
	// of the query being executed.
	Regexp string
}

QueryTemplate carries the arguments for creating a templated query.

type RaftConfiguration 

type RaftConfiguration struct {
	// Servers has the list of servers in the Raft configuration.
	Servers []*RaftServer

	// Index has the Raft index of this configuration.
	Index uint64
}

RaftConfiguration is returned when querying for the current Raft configuration.

type RaftServer 

type RaftServer struct {
	// ID is the unique ID for the server. These are currently the same
	// as the address, but they will be changed to a real GUID in a future
	// release of Consul.
	ID string

	// Node is the node name of the server, as known by Consul, or this
	// will be set to "(unknown)" otherwise.
	Node string

	// Address is the IP:port of the server, used for Raft communications.
	Address string

	// Leader is true if this server is the current cluster leader.
	Leader bool

	// Protocol version is the raft protocol version used by the server
	ProtocolVersion string

	// Voter is true if this server has a vote in the cluster. This might
	// be false if the server is staging and still coming online, or if
	// it's a non-voting server, which will be added in a future release of
	// Consul.
	Voter bool
}

RaftServer has information about a server in the Raft configuration.

type Raw 

type Raw struct {
	// contains filtered or unexported fields
}

Raw can be used to do raw queries against custom endpoints

func (*Raw) Query 

func (raw *Raw) Query(endpoint string, out interface{}, q *QueryOptions) (*QueryMeta, error)

Query is used to do a GET request against an endpoint and deserialize the response into an interface using standard Consul conventions.

func (*Raw) Write 

func (raw *Raw) Write(endpoint string, in, out interface{}, q *WriteOptions) (*WriteMeta, error)

Write is used to do a PUT request against an endpoint and serialize/deserialized using the standard Consul conventions.

type ReadableDuration 

type ReadableDuration time.Duration

ReadableDuration is a duration type that is serialized to JSON in human readable format.

func NewReadableDuration 

func NewReadableDuration(dur time.Duration) *ReadableDuration

func (*ReadableDuration) Duration 

func (d *ReadableDuration) Duration() time.Duration

func (*ReadableDuration) MarshalJSON 

func (d *ReadableDuration) MarshalJSON() ([]byte, error)

func (*ReadableDuration) String 

func (d *ReadableDuration) String() string

func (*ReadableDuration) UnmarshalJSON 

func (d *ReadableDuration) UnmarshalJSON(raw []byte) error

type SampledValue 

type SampledValue struct {
	Name   string
	Count  int
	Sum    float64
	Min    float64
	Max    float64
	Mean   float64
	Stddev float64
	Labels map[string]string
}

SampledValue stores info about a metric that is incremented over time, such as the number of requests to an HTTP endpoint.

type Semaphore 

type Semaphore struct {
	// contains filtered or unexported fields
}

Semaphore is used to implement a distributed semaphore using the Consul KV primitives.

func (*Semaphore) Acquire 

func (s *Semaphore) Acquire(stopCh <-chan struct{}) (<-chan struct{}, error)

Acquire attempts to reserve a slot in the semaphore, blocking until success, interrupted via the stopCh or an error is encountered. Providing a non-nil stopCh can be used to abort the attempt. On success, a channel is returned that represents our slot. This channel could be closed at any time due to session invalidation, communication errors, operator intervention, etc. It is NOT safe to assume that the slot is held until Release() unless the Session is specifically created without any associated health checks. By default Consul sessions prefer liveness over safety and an application must be able to handle the session being lost.

func (*Semaphore) Destroy 

func (s *Semaphore) Destroy() error

Destroy is used to cleanup the semaphore entry. It is not necessary to invoke. It will fail if the semaphore is in use.

func (*Semaphore) Release 

func (s *Semaphore) Release() error

Release is used to voluntarily give up our semaphore slot. It is an error to call this if the semaphore has not been acquired.

type SemaphoreOptions 

type SemaphoreOptions struct {
	Prefix            string        // Must be set and have write permissions
	Limit             int           // Must be set, and be positive
	Value             []byte        // Optional, value to associate with the contender entry
	Session           string        // Optional, created if not specified
	SessionName       string        // Optional, defaults to DefaultLockSessionName
	SessionTTL        string        // Optional, defaults to DefaultLockSessionTTL
	MonitorRetries    int           // Optional, defaults to 0 which means no retries
	MonitorRetryTime  time.Duration // Optional, defaults to DefaultMonitorRetryTime
	SemaphoreWaitTime time.Duration // Optional, defaults to DefaultSemaphoreWaitTime
	SemaphoreTryOnce  bool          // Optional, defaults to false which means try forever
}

SemaphoreOptions is used to parameterize the Semaphore

type SerfMember 

type SerfMember struct {
	// ID is the node identifier (a UUID).
	ID string

	// Name is the node name.
	Name string

	// Addr has the IP address.
	Addr net.IP

	// Port is the RPC port.
	Port uint16

	// Datacenter is the DC name.
	Datacenter string

	// Role is "client", "server", or "unknown".
	Role string

	// Build has the version of the Consul agent.
	Build string

	// Protocol is the protocol of the Consul agent.
	Protocol int

	// Status is the Serf health status "none", "alive", "leaving", "left",
	// or "failed".
	Status string

	// RTT is the estimated round trip time from the server handling the
	// request to the this member. This will be negative if no RTT estimate
	// is available.
	RTT time.Duration
}

SerfMember is a generic structure for reporting information about members in a Serf cluster. This is only used by the area endpoints right now, but this could be expanded to other endpoints in the future.

type ServerHealth 

type ServerHealth struct {
	// ID is the raft ID of the server.
	ID string

	// Name is the node name of the server.
	Name string

	// Address is the address of the server.
	Address string

	// The status of the SerfHealth check for the server.
	SerfStatus string

	// Version is the Consul version of the server.
	Version string

	// Leader is whether this server is currently the leader.
	Leader bool

	// LastContact is the time since this node's last contact with the leader.
	LastContact *ReadableDuration

	// LastTerm is the highest leader term this server has a record of in its Raft log.
	LastTerm uint64

	// LastIndex is the last log index this server has a record of in its Raft log.
	LastIndex uint64

	// Healthy is whether or not the server is healthy according to the current
	// Autopilot config.
	Healthy bool

	// Voter is whether this is a voting server.
	Voter bool

	// StableSince is the last time this server's Healthy value changed.
	StableSince time.Time
}

ServerHealth is the health (from the leader's point of view) of a server.

type ServiceAddress 

type ServiceAddress struct {
	Address string
	Port    int
}

func ParseServiceAddr 

func ParseServiceAddr(addrPort string) (ServiceAddress, error)

type ServiceConfigEntry 

type ServiceConfigEntry struct {
	Kind        string
	Name        string
	Protocol    string            `json:",omitempty"`
	MeshGateway MeshGatewayConfig `json:",omitempty"`
	ExternalSNI string            `json:",omitempty"`
	CreateIndex uint64
	ModifyIndex uint64
}

func (*ServiceConfigEntry) GetCreateIndex 

func (s *ServiceConfigEntry) GetCreateIndex() uint64

func (*ServiceConfigEntry) GetKind 

func (s *ServiceConfigEntry) GetKind() string

func (*ServiceConfigEntry) GetModifyIndex 

func (s *ServiceConfigEntry) GetModifyIndex() uint64

func (*ServiceConfigEntry) GetName 

func (s *ServiceConfigEntry) GetName() string

type ServiceEntry 

type ServiceEntry struct {
	Node    *Node
	Service *AgentService
	Checks  HealthChecks
}

ServiceEntry is used for the health service endpoint

type ServiceKind 

type ServiceKind string

ServiceKind is the kind of service being registered. 

const (
	// ServiceKindTypical is a typical, classic Consul service. This is
	// represented by the absence of a value. This was chosen for ease of
	// backwards compatibility: existing services in the catalog would
	// default to the typical service.
	ServiceKindTypical ServiceKind = ""

	// ServiceKindConnectProxy is a proxy for the Connect feature. This
	// service proxies another service within Consul and speaks the connect
	// protocol.
	ServiceKindConnectProxy ServiceKind = "connect-proxy"

	// ServiceKindMeshGateway is a Mesh Gateway for the Connect feature. This
	// service will proxy connections based off the SNI header set by other
	// connect proxies
	ServiceKindMeshGateway ServiceKind = "mesh-gateway"
)

type ServiceOp 

type ServiceOp string

ServiceOp constants give possible operations available in a transaction. 

const (
	ServiceGet       ServiceOp = "get"
	ServiceSet       ServiceOp = "set"
	ServiceCAS       ServiceOp = "cas"
	ServiceDelete    ServiceOp = "delete"
	ServiceDeleteCAS ServiceOp = "delete-cas"
)

type ServiceQuery 

type ServiceQuery struct {
	// Service is the service to query.
	Service string

	// Near allows baking in the name of a node to automatically distance-
	// sort from. The magic "_agent" value is supported, which sorts near
	// the agent which initiated the request by default.
	Near string

	// Failover controls what we do if there are no healthy nodes in the
	// local datacenter.
	Failover QueryDatacenterOptions

	// IgnoreCheckIDs is an optional list of health check IDs to ignore when
	// considering which nodes are healthy. It is useful as an emergency measure
	// to temporarily override some health check that is producing false negatives
	// for example.
	IgnoreCheckIDs []string

	// If OnlyPassing is true then we will only include nodes with passing
	// health checks (critical AND warning checks will cause a node to be
	// discarded)
	OnlyPassing bool

	// Tags are a set of required and/or disallowed tags. If a tag is in
	// this list it must be present. If the tag is preceded with "!" then
	// it is disallowed.
	Tags []string

	// NodeMeta is a map of required node metadata fields. If a key/value
	// pair is in this map it must be present on the node in order for the
	// service entry to be returned.
	NodeMeta map[string]string

	// ServiceMeta is a map of required service metadata fields. If a key/value
	// pair is in this map it must be present on the node in order for the
	// service entry to be returned.
	ServiceMeta map[string]string

	// Connect if true will filter the prepared query results to only
	// include Connect-capable services. These include both native services
	// and proxies for matching services. Note that if a proxy matches,
	// the constraints in the query above (Near, OnlyPassing, etc.) apply
	// to the _proxy_ and not the service being proxied. In practice, proxies
	// should be directly next to their services so this isn't an issue.
	Connect bool
}

ServiceQuery is used to query for a set of healthy nodes offering a specific service.

type ServiceResolverConfigEntry 

type ServiceResolverConfigEntry struct {
	Kind string
	Name string

	DefaultSubset  string                             `json:",omitempty"`
	Subsets        map[string]ServiceResolverSubset   `json:",omitempty"`
	Redirect       *ServiceResolverRedirect           `json:",omitempty"`
	Failover       map[string]ServiceResolverFailover `json:",omitempty"`
	ConnectTimeout time.Duration                      `json:",omitempty"`

	CreateIndex uint64
	ModifyIndex uint64
}

func (*ServiceResolverConfigEntry) GetCreateIndex 

func (e *ServiceResolverConfigEntry) GetCreateIndex() uint64

func (*ServiceResolverConfigEntry) GetKind 

func (e *ServiceResolverConfigEntry) GetKind() string

func (*ServiceResolverConfigEntry) GetModifyIndex 

func (e *ServiceResolverConfigEntry) GetModifyIndex() uint64

func (*ServiceResolverConfigEntry) GetName 

func (e *ServiceResolverConfigEntry) GetName() string

func (*ServiceResolverConfigEntry) MarshalJSON 

func (e *ServiceResolverConfigEntry) MarshalJSON() ([]byte, error)

func (*ServiceResolverConfigEntry) UnmarshalJSON 

func (e *ServiceResolverConfigEntry) UnmarshalJSON(data []byte) error

type ServiceResolverFailover 

type ServiceResolverFailover struct {
	Service       string   `json:",omitempty"`
	ServiceSubset string   `json:",omitempty"`
	Namespace     string   `json:",omitempty"`
	Datacenters   []string `json:",omitempty"`
}

type ServiceResolverRedirect 

type ServiceResolverRedirect struct {
	Service       string `json:",omitempty"`
	ServiceSubset string `json:",omitempty"`
	Namespace     string `json:",omitempty"`
	Datacenter    string `json:",omitempty"`
}

type ServiceResolverSubset 

type ServiceResolverSubset struct {
	Filter      string `json:",omitempty"`
	OnlyPassing bool   `json:",omitempty"`
}

type ServiceRoute 

type ServiceRoute struct {
	Match       *ServiceRouteMatch       `json:",omitempty"`
	Destination *ServiceRouteDestination `json:",omitempty"`
}

type ServiceRouteDestination 

type ServiceRouteDestination struct {
	Service               string        `json:",omitempty"`
	ServiceSubset         string        `json:",omitempty"`
	Namespace             string        `json:",omitempty"`
	PrefixRewrite         string        `json:",omitempty"`
	RequestTimeout        time.Duration `json:",omitempty"`
	NumRetries            uint32        `json:",omitempty"`
	RetryOnConnectFailure bool          `json:",omitempty"`
	RetryOnStatusCodes    []uint32      `json:",omitempty"`
}

func (*ServiceRouteDestination) MarshalJSON 

func (e *ServiceRouteDestination) MarshalJSON() ([]byte, error)

func (*ServiceRouteDestination) UnmarshalJSON 

func (e *ServiceRouteDestination) UnmarshalJSON(data []byte) error

type ServiceRouteHTTPMatch 

type ServiceRouteHTTPMatch struct {
	PathExact  string `json:",omitempty"`
	PathPrefix string `json:",omitempty"`
	PathRegex  string `json:",omitempty"`

	Header     []ServiceRouteHTTPMatchHeader     `json:",omitempty"`
	QueryParam []ServiceRouteHTTPMatchQueryParam `json:",omitempty"`
	Methods    []string                          `json:",omitempty"`
}

type ServiceRouteHTTPMatchHeader 

type ServiceRouteHTTPMatchHeader struct {
	Name    string
	Present bool   `json:",omitempty"`
	Exact   string `json:",omitempty"`
	Prefix  string `json:",omitempty"`
	Suffix  string `json:",omitempty"`
	Regex   string `json:",omitempty"`
	Invert  bool   `json:",omitempty"`
}

type ServiceRouteHTTPMatchQueryParam 

type ServiceRouteHTTPMatchQueryParam struct {
	Name    string
	Present bool   `json:",omitempty"`
	Exact   string `json:",omitempty"`
	Regex   string `json:",omitempty"`
}

type ServiceRouteMatch 

type ServiceRouteMatch struct {
	HTTP *ServiceRouteHTTPMatch `json:",omitempty"`
}

type ServiceRouterConfigEntry 

type ServiceRouterConfigEntry struct {
	Kind string
	Name string

	Routes []ServiceRoute `json:",omitempty"`

	CreateIndex uint64
	ModifyIndex uint64
}

func (*ServiceRouterConfigEntry) GetCreateIndex 

func (e *ServiceRouterConfigEntry) GetCreateIndex() uint64

func (*ServiceRouterConfigEntry) GetKind 

func (e *ServiceRouterConfigEntry) GetKind() string

func (*ServiceRouterConfigEntry) GetModifyIndex 

func (e *ServiceRouterConfigEntry) GetModifyIndex() uint64

func (*ServiceRouterConfigEntry) GetName 

func (e *ServiceRouterConfigEntry) GetName() string

type ServiceSplit 

type ServiceSplit struct {
	Weight        float32
	Service       string `json:",omitempty"`
	ServiceSubset string `json:",omitempty"`
	Namespace     string `json:",omitempty"`
}

type ServiceSplitterConfigEntry 

type ServiceSplitterConfigEntry struct {
	Kind string
	Name string

	Splits []ServiceSplit `json:",omitempty"`

	CreateIndex uint64
	ModifyIndex uint64
}

func (*ServiceSplitterConfigEntry) GetCreateIndex 

func (e *ServiceSplitterConfigEntry) GetCreateIndex() uint64

func (*ServiceSplitterConfigEntry) GetKind 

func (e *ServiceSplitterConfigEntry) GetKind() string

func (*ServiceSplitterConfigEntry) GetModifyIndex 

func (e *ServiceSplitterConfigEntry) GetModifyIndex() uint64

func (*ServiceSplitterConfigEntry) GetName 

func (e *ServiceSplitterConfigEntry) GetName() string

type ServiceTxnOp 

type ServiceTxnOp struct {
	Verb    ServiceOp
	Node    string
	Service AgentService
}

ServiceTxnOp defines a single operation inside a transaction.

type Session 

type Session struct {
	// contains filtered or unexported fields
}

Session can be used to query the Session endpoints

func (*Session) Create 

func (s *Session) Create(se *SessionEntry, q *WriteOptions) (string, *WriteMeta, error)

Create makes a new session. Providing a session entry can customize the session. It can also be nil to use defaults.

func (*Session) CreateNoChecks 

func (s *Session) CreateNoChecks(se *SessionEntry, q *WriteOptions) (string, *WriteMeta, error)

CreateNoChecks is like Create but is used specifically to create a session with no associated health checks.

func (*Session) Destroy 

func (s *Session) Destroy(id string, q *WriteOptions) (*WriteMeta, error)

Destroy invalidates a given session

func (*Session) Info 

func (s *Session) Info(id string, q *QueryOptions) (*SessionEntry, *QueryMeta, error)

Info looks up a single session

func (*Session) List 

func (s *Session) List(q *QueryOptions) ([]*SessionEntry, *QueryMeta, error)

List gets all active sessions

func (*Session) Node 

func (s *Session) Node(node string, q *QueryOptions) ([]*SessionEntry, *QueryMeta, error)

List gets sessions for a node

func (*Session) Renew 

func (s *Session) Renew(id string, q *WriteOptions) (*SessionEntry, *WriteMeta, error)

Renew renews the TTL on a given session

func (*Session) RenewPeriodic 

func (s *Session) RenewPeriodic(initialTTL string, id string, q *WriteOptions, doneCh <-chan struct{}) error

RenewPeriodic is used to periodically invoke Session.Renew on a session until a doneCh is closed. This is meant to be used in a long running goroutine to ensure a session stays valid.

type SessionEntry 

type SessionEntry struct {
	CreateIndex uint64
	ID          string
	Name        string
	Node        string
	Checks      []string
	LockDelay   time.Duration
	Behavior    string
	TTL         string
}

SessionEntry represents a session in consul

type Snapshot 

type Snapshot struct {
	// contains filtered or unexported fields
}

Snapshot can be used to query the /v1/snapshot endpoint to take snapshots of Consul's internal state and restore snapshots for disaster recovery.

func (*Snapshot) Restore 

func (s *Snapshot) Restore(q *WriteOptions, in io.Reader) error

Restore streams in an existing snapshot and attempts to restore it.

func (*Snapshot) Save 

func (s *Snapshot) Save(q *QueryOptions) (io.ReadCloser, *QueryMeta, error)

Save requests a new snapshot and provides an io.ReadCloser with the snapshot data to save. If this doesn't return an error, then it's the responsibility of the caller to close it. Only a subset of the QueryOptions are supported: Datacenter, AllowStale, and Token.

type Status 

type Status struct {
	// contains filtered or unexported fields
}

Status can be used to query the Status endpoints

func (*Status) Leader 

func (s *Status) Leader() (string, error)

Leader is used to query for a known leader

func (*Status) Peers 

func (s *Status) Peers() ([]string, error)

Peers is used to query for a known raft peers

type TLSConfig 

type TLSConfig struct {
	// Address is the optional address of the Consul server. The port, if any
	// will be removed from here and this will be set to the ServerName of the
	// resulting config.
	Address string

	// CAFile is the optional path to the CA certificate used for Consul
	// communication, defaults to the system bundle if not specified.
	CAFile string

	// CAPath is the optional path to a directory of CA certificates to use for
	// Consul communication, defaults to the system bundle if not specified.
	CAPath string

	// CertFile is the optional path to the certificate for Consul
	// communication. If this is set then you need to also set KeyFile.
	CertFile string

	// KeyFile is the optional path to the private key for Consul communication.
	// If this is set then you need to also set CertFile.
	KeyFile string

	// InsecureSkipVerify if set to true will disable TLS host verification.
	InsecureSkipVerify bool
}

TLSConfig is used to generate a TLSClientConfig that's useful for talking to Consul using TLS.

type Txn 

type Txn struct {
	// contains filtered or unexported fields
}

Txn is used to manipulate the Txn API

func (*Txn) Txn 

func (t *Txn) Txn(txn TxnOps, q *QueryOptions) (bool, *TxnResponse, *QueryMeta, error)

Txn is used to apply multiple Consul operations in a single, atomic transaction.

Note that Go will perform the required base64 encoding on the values automatically because the type is a byte slice. Transactions are defined as a list of operations to perform, using the different fields in the TxnOp structure to define operations. If any operation fails, none of the changes are applied to the state store.

Even though this is generally a write operation, we take a QueryOptions input and return a QueryMeta output. If the transaction contains only read ops, then Consul will fast-path it to a different endpoint internally which supports consistency controls, but not blocking. If there are write operations then the request will always be routed through raft and any consistency settings will be ignored.

Here's an example: 

   ops := KVTxnOps{
	   &KVTxnOp{
		   Verb:    KVLock,
		   Key:     "test/lock",
		   Session: "adf4238a-882b-9ddc-4a9d-5b6758e4159e",
		   Value:   []byte("hello"),
	   },
	   &KVTxnOp{
		   Verb:    KVGet,
		   Key:     "another/key",
	   },
	   &CheckTxnOp{
		   Verb:        CheckSet,
		   HealthCheck: HealthCheck{
			   Node:    "foo",
			   CheckID: "redis:a",
			   Name:    "Redis Health Check",
			   Status:  "passing",
		   },
	   }
   }
   ok, response, _, err := kv.Txn(&ops, nil)

If there is a problem making the transaction request then an error will be returned. Otherwise, the ok value will be true if the transaction succeeded or false if it was rolled back. The response is a structured return value which will have the outcome of the transaction. Its Results member will have entries for each operation. For KV operations, Deleted keys will have a nil entry in the results, and to save space, the Value of each key in the Results will be nil unless the operation is a KVGet. If the transaction was rolled back, the Errors member will have entries referencing the index of the operation that failed along with an error message.

type TxnError 

type TxnError struct {
	OpIndex int
	What    string
}

TxnError is used to return information about an operation in a transaction.

type TxnErrors 

type TxnErrors []*TxnError

TxnErrors is a list of TxnError objects.

type TxnOp 

type TxnOp struct {
	KV      *KVTxnOp
	Node    *NodeTxnOp
	Service *ServiceTxnOp
	Check   *CheckTxnOp
}

TxnOp is the internal format we send to Consul. Currently only K/V and check operations are supported.

type TxnOps 

type TxnOps []*TxnOp

TxnOps is a list of transaction operations.

type TxnResponse 

type TxnResponse struct {
	Results TxnResults
	Errors  TxnErrors
}

TxnResponse is the internal format we receive from Consul.

type TxnResult 

type TxnResult struct {
	KV      *KVPair
	Node    *Node
	Service *CatalogService
	Check   *HealthCheck
}

TxnResult is the internal format we receive from Consul.

type TxnResults 

type TxnResults []*TxnResult

TxnResults is a list of TxnResult objects.

type Upstream 

type Upstream struct {
	DestinationType      UpstreamDestType `json:",omitempty"`
	DestinationNamespace string           `json:",omitempty"`
	DestinationName      string
	Datacenter           string                 `json:",omitempty"`
	LocalBindAddress     string                 `json:",omitempty"`
	LocalBindPort        int                    `json:",omitempty"`
	Config               map[string]interface{} `json:",omitempty" bexpr:"-"`
	MeshGateway          MeshGatewayConfig      `json:",omitempty"`
}

Upstream is the response structure for a proxy upstream configuration.

type UpstreamDestType 

type UpstreamDestType string

UpstreamDestType is the type of upstream discovery mechanism. 

const (
	// UpstreamDestTypeService discovers instances via healthy service lookup.
	UpstreamDestTypeService UpstreamDestType = "service"

	// UpstreamDestTypePreparedQuery discovers instances via prepared query
	// execution.
	UpstreamDestTypePreparedQuery UpstreamDestType = "prepared_query"
)

type UserEvent 

type UserEvent struct {
	ID            string
	Name          string
	Payload       []byte
	NodeFilter    string
	ServiceFilter string
	TagFilter     string
	Version       int
	LTime         uint64
}

UserEvent represents an event that was fired by the user

type Weights 

type Weights struct {
	Passing int
	Warning int
}

type WriteMeta 

type WriteMeta struct {
	// How long did the request take
	RequestTime time.Duration
}

WriteMeta is used to return meta data about a write

type WriteOptions 

type WriteOptions struct {
	// Providing a datacenter overwrites the DC provided
	// by the Config
	Datacenter string

	// Token is used to provide a per-request ACL token
	// which overrides the agent's default token.
	Token string

	// RelayFactor is used in keyring operations to cause responses to be
	// relayed back to the sender through N other random nodes. Must be
	// a value from 0 to 5 (inclusive).
	RelayFactor uint8
	// contains filtered or unexported fields
}

WriteOptions are used to parameterize a write

func (*WriteOptions) Context 

func (o *WriteOptions) Context() context.Context

func (*WriteOptions) WithContext 

func (o *WriteOptions) WithContext(ctx context.Context) *WriteOptions

Source Files

View all Source files

Directories

Path Synopsis

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.