Version: v0.7.1 Latest Latest

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Published: Dec 20, 2017 License: MPL-2.0 Imports: 16 Imported by: 0




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const (

	// DefaultQueryWaitDuration is the max duration the Consul Agent will
	// spend waiting for a response from a Consul Query.
	DefaultQueryWaitDuration = 2 * time.Second

	// ServiceTagHTTP is the tag assigned to HTTP services
	ServiceTagHTTP = "http"

	// ServiceTagRPC is the tag assigned to RPC services
	ServiceTagRPC = "rpc"

	// ServiceTagSerf is the tag assigned to Serf services
	ServiceTagSerf = "serf"


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type AgentAPI added in v0.6.0

type AgentAPI interface {
	Services() (map[string]*api.AgentService, error)
	Checks() (map[string]*api.AgentCheck, error)
	CheckRegister(check *api.AgentCheckRegistration) error
	CheckDeregister(checkID string) error
	ServiceRegister(service *api.AgentServiceRegistration) error
	ServiceDeregister(serviceID string) error
	UpdateTTL(id, output, status string) error

AgentAPI is the consul/api.Agent API used by Nomad.

type AllocRegistration added in v0.6.1

type AllocRegistration struct {
	// Tasks maps the name of a task to its registered services and checks
	Tasks map[string]*TaskRegistration

AllocRegistration holds the status of services registered for a particular allocations by task.

func (*AllocRegistration) NumChecks added in v0.6.1

func (a *AllocRegistration) NumChecks() int

NumChecks returns the number of registered checks

func (*AllocRegistration) NumServices added in v0.6.1

func (a *AllocRegistration) NumServices() int

NumServices returns the number of registered services

type CatalogAPI added in v0.6.0

type CatalogAPI interface {
	Datacenters() ([]string, error)
	Service(service, tag string, q *api.QueryOptions) ([]*api.CatalogService, *api.QueryMeta, error)

CatalogAPI is the consul/api.Catalog API used by Nomad.

type ChecksAPI added in v0.7.0

type ChecksAPI interface {
	// Checks returns a list of all checks.
	Checks() (map[string]*api.AgentCheck, error)

ChecksAPI is the part of the Consul API the checkWatcher requires.

type MockAgent added in v0.7.0

type MockAgent struct {
	// contains filtered or unexported fields

MockAgent is a fake in-memory Consul backend for ServiceClient.

func NewMockAgent added in v0.7.0

func NewMockAgent() *MockAgent

NewMockAgent that returns all checks as passing.

func (*MockAgent) CheckDeregister added in v0.7.0

func (c *MockAgent) CheckDeregister(checkID string) error

func (*MockAgent) CheckRegister added in v0.7.0

func (c *MockAgent) CheckRegister(check *api.AgentCheckRegistration) error

func (*MockAgent) CheckRegs added in v0.7.1

func (c *MockAgent) CheckRegs() []*api.AgentCheckRegistration

CheckRegs returns the raw AgentCheckRegistrations registered with this mock agent.

func (*MockAgent) Checks added in v0.7.0

func (c *MockAgent) Checks() (map[string]*api.AgentCheck, error)

Checks implements the Agent API Checks method.

func (*MockAgent) ServiceDeregister added in v0.7.0

func (c *MockAgent) ServiceDeregister(serviceID string) error

func (*MockAgent) ServiceRegister added in v0.7.0

func (c *MockAgent) ServiceRegister(service *api.AgentServiceRegistration) error

func (*MockAgent) Services added in v0.7.0

func (c *MockAgent) Services() (map[string]*api.AgentService, error)

func (*MockAgent) SetStatus added in v0.7.0

func (c *MockAgent) SetStatus(s string) string

SetStatus that Checks() should return. Returns old status value.

func (*MockAgent) UpdateTTL added in v0.7.0

func (c *MockAgent) UpdateTTL(id string, output string, status string) error

type MockCatalog added in v0.6.0

type MockCatalog struct {
	// contains filtered or unexported fields

MockCatalog can be used for testing where the CatalogAPI is needed.

func NewMockCatalog added in v0.6.0

func NewMockCatalog(l *log.Logger) *MockCatalog

func (*MockCatalog) Datacenters added in v0.6.0

func (m *MockCatalog) Datacenters() ([]string, error)

func (*MockCatalog) Service added in v0.6.0

func (m *MockCatalog) Service(service, tag string, q *api.QueryOptions) ([]*api.CatalogService, *api.QueryMeta, error)

type ServiceClient added in v0.6.0

type ServiceClient struct {
	// contains filtered or unexported fields

ServiceClient handles task and agent service registration with Consul.

func NewServiceClient added in v0.6.0

func NewServiceClient(consulClient AgentAPI, skipVerifySupport bool, logger *log.Logger) *ServiceClient

NewServiceClient creates a new Consul ServiceClient from an existing Consul API Client and logger.

func (*ServiceClient) AllocRegistrations added in v0.6.1

func (c *ServiceClient) AllocRegistrations(allocID string) (*AllocRegistration, error)

AllocRegistrations returns the registrations for the given allocation. If the allocation has no reservations, the response is a nil object.

func (*ServiceClient) RegisterAgent added in v0.6.0

func (c *ServiceClient) RegisterAgent(role string, services []*structs.Service) error

RegisterAgent registers Nomad agents (client or server). The Service.PortLabel should be a literal port to be parsed with SplitHostPort. Script checks are not supported and will return an error. Registration is asynchronous.

Agents will be deregistered when Shutdown is called.

func (*ServiceClient) RegisterTask added in v0.6.0

func (c *ServiceClient) RegisterTask(allocID string, task *structs.Task, restarter TaskRestarter, exec driver.ScriptExecutor, net *cstructs.DriverNetwork) error

RegisterTask with Consul. Adds all service entries and checks to Consul. If exec is nil and a script check exists an error is returned.

If the service IP is set it used as the address in the service registration. Checks will always use the IP from the Task struct (host's IP).

Actual communication with Consul is done asynchrously (see Run).

func (*ServiceClient) RemoveTask added in v0.6.0

func (c *ServiceClient) RemoveTask(allocID string, task *structs.Task)

RemoveTask from Consul. Removes all service entries and checks.

Actual communication with Consul is done asynchrously (see Run).

func (*ServiceClient) Run added in v0.6.0

func (c *ServiceClient) Run()

Run the Consul main loop which retries operations against Consul. It should be called exactly once.

func (*ServiceClient) Shutdown added in v0.6.0

func (c *ServiceClient) Shutdown() error

Shutdown the Consul client. Update running task registations and deregister agent from Consul. On first call blocks up to shutdownWait before giving up on syncing operations.

func (*ServiceClient) UpdateTask added in v0.6.0

func (c *ServiceClient) UpdateTask(allocID string, existing, newTask *structs.Task, restarter TaskRestarter, exec driver.ScriptExecutor, net *cstructs.DriverNetwork) error

UpdateTask in Consul. Does not alter the service if only checks have changed.

DriverNetwork must not change between invocations for the same allocation.

type ServiceRegistration added in v0.6.1

type ServiceRegistration struct {

	// Service is the AgentService registered in Consul.
	Service *api.AgentService

	// Checks is the status of the registered checks.
	Checks []*api.AgentCheck
	// contains filtered or unexported fields

ServiceRegistration holds the status of a registered Consul Service and its Checks.

type TaskRegistration added in v0.6.1

type TaskRegistration struct {
	Services map[string]*ServiceRegistration

TaskRegistration holds the status of services registered for a particular task.

type TaskRestarter added in v0.7.0

type TaskRestarter interface {
	Restart(source, reason string, failure bool)

TaskRestarter allows the checkWatcher to restart tasks.

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