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backend.go
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backend.go
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package system // import "github.com/docker/docker/api/server/router/system"
import (
"context"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/events"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/api/types/registry"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/api/types/system"
)
// DiskUsageOptions holds parameters for system disk usage query.
type DiskUsageOptions struct {
// Containers controls whether container disk usage should be computed.
Containers bool
// Images controls whether image disk usage should be computed.
Images bool
// Volumes controls whether volume disk usage should be computed.
Volumes bool
}
// Backend is the methods that need to be implemented to provide
// system specific functionality.
type Backend interface {
SystemInfo(context.Context) (*system.Info, error)
SystemVersion(context.Context) (types.Version, error)
SystemDiskUsage(ctx context.Context, opts DiskUsageOptions) (*types.DiskUsage, error)
SubscribeToEvents(since, until time.Time, ef filters.Args) ([]events.Message, chan interface{})
UnsubscribeFromEvents(chan interface{})
AuthenticateToRegistry(ctx context.Context, authConfig *registry.AuthConfig) (string, string, error)
}
// ClusterBackend is all the methods that need to be implemented
// to provide cluster system specific functionality.
type ClusterBackend interface {
Info(context.Context) swarm.Info
}
// StatusProvider provides methods to get the swarm status of the current node.
type StatusProvider interface {
Status() string
}