config

package
Version: v0.14.1 Latest Latest
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Published: Aug 16, 2021 License: Apache-2.0, MIT, Apache-2.0, MIT Imports: 16 Imported by: 36

Documentation

Overview

Package config provides interfaces and utilities for different Cluster components to register, read, write and validate configuration sections stored in a central configuration file.

Index

Constants

View Source
const (
	DefaultConfigCrypto    = crypto.Ed25519
	DefaultConfigKeyLength = -1
)

Identity defaults

Variables

View Source
var ConfigSaveInterval = time.Second

ConfigSaveInterval specifies how often to save the configuration file if it needs saving.

Functions

func DefaultJSONMarshal

func DefaultJSONMarshal(v interface{}) ([]byte, error)

DefaultJSONMarshal produces pretty JSON with 2-space indentation

func DisplayJSON added in v0.13.0

func DisplayJSON(cfg interface{}) ([]byte, error)

DisplayJSON takes pointer to a JSON-friendly configuration struct and returns the JSON-encoded representation of it filtering out any struct fields marked with the tag `hidden:"true"`, but keeping fields marked with `"json:omitempty"`.

func GetClusterConfig added in v0.11.0

func GetClusterConfig(configPath string) ([]byte, error)

GetClusterConfig extracts cluster config from the configuration file and returns bytes of it

func IsErrFetchingSource added in v0.12.0

func IsErrFetchingSource(err error) bool

IsErrFetchingSource reports whether this error happened when trying to fetch a remote configuration source (as opposed to an error parsing the config).

func ParseDurations added in v0.3.5

func ParseDurations(component string, args ...*DurationOpt) error

ParseDurations takes a time.Duration src and saves it to the given dst.

func SetIfNotDefault

func SetIfNotDefault(src interface{}, dest interface{})

SetIfNotDefault sets dest to the value of src if src is not the default value of the type. dest must be a pointer.

Types

type ComponentConfig

type ComponentConfig interface {
	// Returns a string identifying the section name for this configuration
	ConfigKey() string
	// Parses a JSON representation of this configuration
	LoadJSON([]byte) error
	// Provides a JSON representation of this configuration
	ToJSON() ([]byte, error)
	// Sets default working values
	Default() error
	// Sets values from environment variables
	ApplyEnvVars() error
	// Allows this component to work under a subfolder
	SetBaseDir(string)
	// Checks that the configuration is valid
	Validate() error
	// Provides a channel to signal the Manager that the configuration
	// should be persisted.
	SaveCh() <-chan struct{}
	// ToDisplayJSON returns a string representing the config excluding hidden fields.
	ToDisplayJSON() ([]byte, error)
}

The ComponentConfig interface allows components to define configurations which can be managed as part of the ipfs-cluster configuration file by the Manager.

type DurationOpt added in v0.3.5

type DurationOpt struct {
	// The duration we need to parse
	Duration string
	// Where to store the result
	Dst *time.Duration
	// A variable name associated to it for helpful errors.
	Name string
}

DurationOpt provides a datatype to use with ParseDurations

type Identity added in v0.11.0

type Identity struct {
	ID         peer.ID
	PrivateKey crypto.PrivKey
}

Identity represents identity of a cluster peer for communication, including the Consensus component.

func NewIdentity added in v0.11.0

func NewIdentity() (*Identity, error)

NewIdentity returns a new random identity.

func (*Identity) ApplyEnvVars added in v0.11.0

func (ident *Identity) ApplyEnvVars() error

ApplyEnvVars fills in any Config fields found as environment variables.

func (*Identity) ConfigKey added in v0.11.0

func (ident *Identity) ConfigKey() string

ConfigKey returns a human-readable string to identify a cluster Identity.

func (*Identity) Default added in v0.11.0

func (ident *Identity) Default() error

Default generates a random keypair for this identity.

func (*Identity) Equals added in v0.11.0

func (ident *Identity) Equals(i *Identity) bool

Equals returns true if equal to provided identity.

func (*Identity) LoadJSON added in v0.11.0

func (ident *Identity) LoadJSON(raw []byte) error

LoadJSON receives a raw json-formatted identity and sets the Config fields from it. Note that it should be JSON as generated by ToJSON().

func (*Identity) LoadJSONFromFile added in v0.11.0

func (ident *Identity) LoadJSONFromFile(path string) error

LoadJSONFromFile reads an Identity file from disk and parses it and return Identity.

func (*Identity) SaveJSON added in v0.11.0

func (ident *Identity) SaveJSON(path string) error

SaveJSON saves the JSON representation of the Identity to the given path.

func (*Identity) ToJSON added in v0.11.0

func (ident *Identity) ToJSON() (raw []byte, err error)

ToJSON generates a human-friendly version of Identity.

func (*Identity) Validate added in v0.11.0

func (ident *Identity) Validate() error

Validate will check that the values of this identity seem to be working ones.

type Manager

type Manager struct {

	// stores original source if any
	Source string
	// contains filtered or unexported fields
}

Manager represents an ipfs-cluster configuration which bundles different ComponentConfigs object together. Use RegisterComponent() to add a component configurations to the object. Once registered, configurations will be parsed from the central configuration file when doing LoadJSON(), and saved to it when doing SaveJSON().

func NewManager

func NewManager() *Manager

NewManager returns a correctly initialized Manager which is ready to accept component configurations.

func (*Manager) ApplyEnvVars added in v0.10.0

func (cfg *Manager) ApplyEnvVars() error

ApplyEnvVars overrides configuration fields with any values found in environment variables.

func (*Manager) Default

func (cfg *Manager) Default() error

Default generates a default configuration by generating defaults for all registered components.

func (*Manager) IsLoadedFromJSON added in v0.11.0

func (cfg *Manager) IsLoadedFromJSON(t SectionType, name string) bool

IsLoadedFromJSON tells whether the given component belonging to the given section type is present in the cluster JSON config or not.

func (*Manager) LoadJSON

func (cfg *Manager) LoadJSON(bs []byte) error

LoadJSON parses configurations for all registered components, In order to work, component configurations must have been registered beforehand with RegisterComponent.

func (*Manager) LoadJSONFileAndEnv added in v0.10.0

func (cfg *Manager) LoadJSONFileAndEnv(path string) error

LoadJSONFileAndEnv calls LoadJSONFromFile followed by ApplyEnvVars, reading and parsing a Configuration file and then overriding fields with any values found in environment variables.

func (*Manager) LoadJSONFromFile

func (cfg *Manager) LoadJSONFromFile(path string) error

LoadJSONFromFile reads a Configuration file from disk and parses it. See LoadJSON too.

func (*Manager) LoadJSONFromHTTPSource added in v0.11.0

func (cfg *Manager) LoadJSONFromHTTPSource(url string) error

LoadJSONFromHTTPSource reads a Configuration file from a URL and parses it.

func (*Manager) RegisterComponent

func (cfg *Manager) RegisterComponent(t SectionType, ccfg ComponentConfig)

RegisterComponent lets the Manager load and save component configurations

func (*Manager) SaveJSON

func (cfg *Manager) SaveJSON(path string) error

SaveJSON saves the JSON representation of the Config to the given path.

func (*Manager) Shutdown added in v0.3.0

func (cfg *Manager) Shutdown()

Shutdown makes sure all configuration save operations are finished before returning.

func (*Manager) ToDisplayJSON added in v0.13.0

func (cfg *Manager) ToDisplayJSON() ([]byte, error)

ToDisplayJSON returns a printable cluster configuration.

func (*Manager) ToJSON

func (cfg *Manager) ToJSON() ([]byte, error)

ToJSON provides a JSON representation of the configuration by generating JSON for all componenents registered.

func (*Manager) Validate

func (cfg *Manager) Validate() error

Validate checks that all the registered components in this Manager have valid configurations. It also makes sure that the main Cluster compoenent exists.

type Saver

type Saver struct {
	BaseDir string
	// contains filtered or unexported fields
}

Saver implements common functionality useful for ComponentConfigs

func (*Saver) NotifySave

func (sv *Saver) NotifySave()

NotifySave signals the SaveCh() channel in a non-blocking fashion.

func (*Saver) SaveCh

func (sv *Saver) SaveCh() <-chan struct{}

SaveCh returns a channel which is signaled when a component wants to persist its configuration

func (*Saver) SetBaseDir

func (sv *Saver) SetBaseDir(dir string)

SetBaseDir is a setter for BaseDir and implements part of the ComponentConfig interface.

type Section

type Section map[string]ComponentConfig

Section is a section of which stores component-specific configurations.

type SectionType

type SectionType int

SectionType specifies to which section a component configuration belongs.

const (
	Cluster SectionType = iota
	Consensus
	API
	IPFSConn
	State
	PinTracker
	Monitor
	Allocator
	Informer
	Observations
	Datastore
)

These are the component configuration types supported by the Manager.

func SectionTypes added in v0.8.0

func SectionTypes() []SectionType

SectionTypes returns the list of supported SectionTypes

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