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package api
import (
"errors"
"fmt"
"strings"
"github.com/docker/go-events"
)
var (
errUnknownStoreAction = errors.New("unrecognized action type")
errConflictingFilters = errors.New("conflicting filters specified")
errNoKindSpecified = errors.New("no kind of object specified")
errUnrecognizedAction = errors.New("unrecognized action")
)
// StoreObject is an abstract object that can be handled by the store.
type StoreObject interface {
GetID() string // Get ID
GetMeta() Meta // Retrieve metadata
SetMeta(Meta) // Set metadata
CopyStoreObject() StoreObject // Return a copy of this object
EventCreate() Event // Return a creation event
EventUpdate(oldObject StoreObject) Event // Return an update event
EventDelete() Event // Return a deletion event
}
// Event is the type used for events passed over watcher channels, and also
// the type used to specify filtering in calls to Watch.
type Event interface {
// TODO(stevvooe): Consider whether it makes sense to squish both the
// matcher type and the primary type into the same type. It might be better
// to build a matcher from an event prototype.
// Matches checks if this item in a watch queue Matches the event
// description.
Matches(events.Event) bool
}
// EventCreate is an interface implemented by every creation event type
type EventCreate interface {
IsEventCreate() bool
}
// EventUpdate is an interface implemented by every update event type
type EventUpdate interface {
IsEventUpdate() bool
}
// EventDelete is an interface implemented by every delete event type
type EventDelete interface {
IsEventDelete()
}
func customIndexer(kind string, annotations *Annotations) (bool, [][]byte, error) {
var converted [][]byte
for _, entry := range annotations.Indices {
index := make([]byte, 0, len(kind)+1+len(entry.Key)+1+len(entry.Val)+1)
if kind != "" {
index = append(index, []byte(kind)...)
index = append(index, '|')
}
index = append(index, []byte(entry.Key)...)
index = append(index, '|')
index = append(index, []byte(entry.Val)...)
index = append(index, '\x00')
converted = append(converted, index)
}
// Add the null character as a terminator
return len(converted) != 0, converted, nil
}
func fromArgs(args ...interface{}) ([]byte, error) {
if len(args) != 1 {
return nil, fmt.Errorf("must provide only a single argument")
}
arg, ok := args[0].(string)
if !ok {
return nil, fmt.Errorf("argument must be a string: %#v", args[0])
}
// Add the null character as a terminator
arg += "\x00"
return []byte(arg), nil
}
func prefixFromArgs(args ...interface{}) ([]byte, error) {
val, err := fromArgs(args...)
if err != nil {
return nil, err
}
// Strip the null terminator, the rest is a prefix
n := len(val)
if n > 0 {
return val[:n-1], nil
}
return val, nil
}
func checkCustom(a1, a2 Annotations) bool {
if len(a1.Indices) == 1 {
for _, ind := range a2.Indices {
if ind.Key == a1.Indices[0].Key && ind.Val == a1.Indices[0].Val {
return true
}
}
}
return false
}
func checkCustomPrefix(a1, a2 Annotations) bool {
if len(a1.Indices) == 1 {
for _, ind := range a2.Indices {
if ind.Key == a1.Indices[0].Key && strings.HasPrefix(ind.Val, a1.Indices[0].Val) {
return true
}
}
}
return false
}
|
