discovery

package
Version: v1.4.1 Latest Latest
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Published: Nov 28, 2016 License: Apache-2.0 Imports: 15 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

func ProvidersFromConfig

func ProvidersFromConfig(cfg config.ServiceDiscoveryConfig) map[string]TargetProvider

ProvidersFromConfig returns all TargetProviders configured in cfg.

Types

type StaticProvider

type StaticProvider struct {
	TargetGroups []*config.TargetGroup
}

StaticProvider holds a list of target groups that never change.

func NewStaticProvider

func NewStaticProvider(groups []*config.TargetGroup) *StaticProvider

NewStaticProvider returns a StaticProvider configured with the given target groups.

func (*StaticProvider) Run

func (sd *StaticProvider) Run(ctx context.Context, ch chan<- []*config.TargetGroup)

Run implements the TargetProvider interface.

type Syncer

type Syncer interface {
	Sync([]*config.TargetGroup)
}

Syncer receives updates complete sets of TargetGroups.

type TargetProvider

type TargetProvider interface {
	// Run hands a channel to the target provider through which it can send
	// updated target groups.
	// Must returns if the context gets canceled. It should not close the update
	// channel on returning.
	Run(ctx context.Context, up chan<- []*config.TargetGroup)
}

A TargetProvider provides information about target groups. It maintains a set of sources from which TargetGroups can originate. Whenever a target provider detects a potential change, it sends the TargetGroup through its provided channel.

The TargetProvider does not have to guarantee that an actual change happened. It does guarantee that it sends the new TargetGroup whenever a change happens.

TargetProviders should initially send a full set of all discoverable TargetGroups.

type TargetSet

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

TargetSet handles multiple TargetProviders and sends a full overview of their discovered TargetGroups to a Syncer.

func NewTargetSet

func NewTargetSet(s Syncer) *TargetSet

NewTargetSet returns a new target sending TargetGroups to the Syncer.

func (*TargetSet) Run

func (ts *TargetSet) Run(ctx context.Context)

Run starts the processing of target providers and their updates. It blocks until the context gets canceled.

func (*TargetSet) UpdateProviders

func (ts *TargetSet) UpdateProviders(p map[string]TargetProvider)

UpdateProviders sets new target providers for the target set.

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