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// Copyright 2012, 2013 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package state
import (
"launchpad.net/juju-core/environs/config"
"launchpad.net/juju-core/instance"
"launchpad.net/juju-core/state/api/params"
"launchpad.net/juju-core/tools"
"launchpad.net/juju-core/version"
)
// EntityFinder is implemented by *State. See State.FindEntity
// for documentation on the method.
type EntityFinder interface {
FindEntity(tag string) (Entity, error)
}
var _ EntityFinder = (*State)(nil)
// Entity represents any entity that can be returned
// by State.FindEntity. All entities have a tag.
type Entity interface {
Tag() string
}
var (
_ Entity = (*Machine)(nil)
_ Entity = (*Unit)(nil)
_ Entity = (*Service)(nil)
_ Entity = (*Environment)(nil)
_ Entity = (*User)(nil)
)
type StatusSetter interface {
SetStatus(status params.Status, info string, data params.StatusData) error
}
type StatusGetter interface {
Status() (status params.Status, info string, data params.StatusData, err error)
}
var (
_ StatusSetter = (*Machine)(nil)
_ StatusSetter = (*Unit)(nil)
_ StatusGetter = (*Machine)(nil)
_ StatusGetter = (*Unit)(nil)
)
// Lifer represents an entity with a life.
type Lifer interface {
Life() Life
}
var (
_ Lifer = (*Machine)(nil)
_ Lifer = (*Unit)(nil)
_ Lifer = (*Service)(nil)
_ Lifer = (*Relation)(nil)
)
// AgentTooler is implemented by entities
// that have associated agent tools.
type AgentTooler interface {
AgentTools() (*tools.Tools, error)
SetAgentVersion(version.Binary) error
}
// EnsureDeader with an EnsureDead method.
type EnsureDeader interface {
EnsureDead() error
}
var (
_ EnsureDeader = (*Machine)(nil)
_ EnsureDeader = (*Unit)(nil)
)
// Remover represents entities with a Remove method.
type Remover interface {
Remove() error
}
var (
_ Remover = (*Machine)(nil)
_ Remover = (*Unit)(nil)
)
// Authenticator represents entites capable of handling password
// authentication.
type Authenticator interface {
Refresh() error
SetPassword(pass string) error
PasswordValid(pass string) bool
}
var (
_ Authenticator = (*Machine)(nil)
_ Authenticator = (*Unit)(nil)
_ Authenticator = (*User)(nil)
)
// MongoPassworder represents an entity that can
// have a mongo password set for it.
type MongoPassworder interface {
SetMongoPassword(password string) error
}
var (
_ MongoPassworder = (*Machine)(nil)
_ MongoPassworder = (*Unit)(nil)
)
// Annotator represents entities capable of handling annotations.
type Annotator interface {
Annotation(key string) (string, error)
Annotations() (map[string]string, error)
SetAnnotations(pairs map[string]string) error
}
var (
_ Annotator = (*Machine)(nil)
_ Annotator = (*Unit)(nil)
_ Annotator = (*Service)(nil)
_ Annotator = (*Environment)(nil)
)
// NotifyWatcherFactory represents an entity that
// can be watched.
type NotifyWatcherFactory interface {
Watch() NotifyWatcher
}
var (
_ NotifyWatcherFactory = (*Machine)(nil)
_ NotifyWatcherFactory = (*Unit)(nil)
_ NotifyWatcherFactory = (*Service)(nil)
_ NotifyWatcherFactory = (*Environment)(nil)
)
// AgentEntity represents an entity that can
// have an agent responsible for it.
type AgentEntity interface {
Entity
Lifer
Authenticator
MongoPassworder
AgentTooler
StatusSetter
EnsureDeader
Remover
NotifyWatcherFactory
}
var (
_ AgentEntity = (*Machine)(nil)
_ AgentEntity = (*Unit)(nil)
)
// EnvironAccessor defines the methods needed to watch for environment
// config changes, and read the environment config.
type EnvironAccessor interface {
WatchForEnvironConfigChanges() NotifyWatcher
EnvironConfig() (*config.Config, error)
}
var _ EnvironAccessor = (*State)(nil)
// UnitsWatcher defines the methods needed to retrieve an entity (a
// machine or a service) and watch its units.
type UnitsWatcher interface {
Entity
WatchUnits() StringsWatcher
}
var _ UnitsWatcher = (*Machine)(nil)
var _ UnitsWatcher = (*Service)(nil)
// EnvironMachinesWatcher defines a single method -
// WatchEnvironMachines.
type EnvironMachinesWatcher interface {
WatchEnvironMachines() StringsWatcher
}
var _ EnvironMachinesWatcher = (*State)(nil)
// InstanceIdGetter defines a single method - InstanceId.
type InstanceIdGetter interface {
InstanceId() (instance.Id, error)
}
var _ InstanceIdGetter = (*Machine)(nil)
|