agent

package
Version: v1.0.0 Latest Latest
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Published: Dec 22, 2016 License: Apache-2.0 Imports: 14 Imported by: 137

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Constants

View Source
const (
	// TTL to use with all state pushed to Registry
	DefaultTTL = "30s"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type Agent

type Agent struct {
	Machine machine.Machine
	// contains filtered or unexported fields
}

func (*Agent) Heartbeat

func (a *Agent) Heartbeat(stop <-chan struct{})

Heartbeat updates the Registry periodically with an acknowledgement of the Jobs this Agent is expected to be running.

func (*Agent) MarshalJSON added in v0.2.0

func (a *Agent) MarshalJSON() ([]byte, error)

type AgentReconciler added in v0.6.0

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

func NewReconciler added in v0.6.0

func NewReconciler(reg registry.Registry, rStream pkg.EventStream) *AgentReconciler

func (*AgentReconciler) Purge added in v0.6.0

func (ar *AgentReconciler) Purge(a *Agent)

Purge attempts to unload all Units that have been loaded locally

func (*AgentReconciler) Reconcile added in v0.6.0

func (ar *AgentReconciler) Reconcile(a *Agent)

Reconcile drives the local Agent's state towards the desired state stored in the Registry.

func (*AgentReconciler) Run added in v0.6.0

func (ar *AgentReconciler) Run(a *Agent, stop <-chan struct{})

Run periodically attempts to reconcile the provided Agent until the stop channel is closed. Run will also reconcile in reaction to events on the AgentReconciler's rStream.

type AgentState

type AgentState struct {
	MState *machine.MachineState
	Units  map[string]*job.Unit
}

func NewAgentState added in v0.7.0

func NewAgentState(ms *machine.MachineState) *AgentState

func (*AgentState) AbleToRun added in v0.7.0

func (as *AgentState) AbleToRun(j *job.Job) (jobAction job.JobAction, errstr string)

AbleToRun determines if an Agent can run the provided Job based on the Agent's current state. A boolean indicating whether this is the case or not is returned. The following criteria is used:

- Agent must meet the Job's machine target requirement (if any)
- Agent must have all of the Job's required metadata (if any)
- Agent must have all required Peers of the Job scheduled locally (if any)
- Job must not conflict with any other Units scheduled to the agent
- Job must specially handle replaced units to be rescheduled

func (*AgentState) GetReplacedUnit added in v1.0.0

func (as *AgentState) GetReplacedUnit(j *job.Job) (string, error)

func (*AgentState) HasConflict

func (as *AgentState) HasConflict(pUnitName string, pConflicts []string) (bool, []string)

HasConflict determines whether there are any known conflicts with the given Unit

type UnitStatePublisher added in v0.6.0

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

func NewUnitStatePublisher added in v0.6.0

func NewUnitStatePublisher(reg registry.Registry, mach machine.Machine, ttl time.Duration) *UnitStatePublisher

func (*UnitStatePublisher) MarshalJSON added in v0.8.0

func (p *UnitStatePublisher) MarshalJSON() ([]byte, error)

func (*UnitStatePublisher) Purge added in v0.7.1

func (p *UnitStatePublisher) Purge()

Purge ensures that the UnitStates for all Units known in the UnitStatePublisher's cache are removed from the registry.

func (*UnitStatePublisher) Run added in v0.6.0

func (p *UnitStatePublisher) Run(beatchan <-chan *unit.UnitStateHeartbeat, stop <-chan struct{})

Run caches all of the heartbeat objects from the provided channel, publishing them to the Registry every 5s. Heartbeat objects are also published as they are received on the channel.

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