hook

Documentation

Overview

Package hook provides types that define the hooks known to the Uniter

Index

• Constants
• type Committer
• type Info
  • func (hi Info) Validate() error
• type Validator

Constants

const (
	LeaderElected         hooks.Kind = "leader-elected"
	LeaderDeposed         hooks.Kind = "leader-deposed"
	LeaderSettingsChanged hooks.Kind = "leader-settings-changed"
)

TODO(fwereade): move these definitions to juju/charm/hooks.

Types

type Committer

type Committer interface {
	CommitHook(Info) error
}

Committer is an interface that may be used to convey the fact that the specified hook has been successfully executed, and committed.

type Info

type Info struct {
	Kind hooks.Kind `yaml:"kind"`

	// RelationId identifies the relation associated with the hook. It is
	// only set when Kind indicates a relation hook.
	RelationId int `yaml:"relation-id,omitempty"`

	// RemoteUnit is the name of the unit that triggered the hook. It is only
	// set when Kind indicates a relation hook other than relation-broken.
	RemoteUnit string `yaml:"remote-unit,omitempty"`

	// RemoteApplication is always set if either an app or a unit triggers the hook.
	// If the app triggers the hook, then RemoteUnit will be empty
	RemoteApplication string `yaml:"remote-application,omitempty"`

	// ChangeVersion identifies the most recent unit settings change
	// associated with RemoteUnit. It is only set when RemoteUnit is set.
	ChangeVersion int64 `yaml:"change-version,omitempty"`

	// StorageId is the ID of the storage instance relevant to the hook.
	StorageId string `yaml:"storage-id,omitempty"`

	// DepartingUnit is the name of the unit that goes away. It is only set
	// when Kind indicates a relation-departed hook.
	DepartingUnit string `yaml:"departee,omitempty"`

	// WorkloadName is the name of the sidecar container or workload relevant to the hook.
	WorkloadName string `yaml:"workload-name,omitempty"`
}

Info holds details required to execute a hook. Not all fields are relevant to all Kind values.

func (Info) Validate

func (hi Info) Validate() error

Validate returns an error if the info is not valid.

type Validator

type Validator interface {
	ValidateHook(Info) error
}

Validator is an interface that may be used to validate a hook execution request prior to executing it.