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// Copyright 2015 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package pubsub
import (
"flag"
)
// Topic is a fully-qualified Pub/Sub project/topic name.
type Topic string
var _ flag.Value = (*Topic)(nil)
// NewTopic generates a new Topic for a given project and topic name.
func NewTopic(project, name string) Topic {
return Topic(newResource(project, "topics", name))
}
func (t *Topic) String() string {
return string(*t)
}
// Set implements flag.Value.
func (t *Topic) Set(value string) error {
v := Topic(value)
if err := v.Validate(); err != nil {
return err
}
*t = v
return nil
}
// Validate returns an error if the topic name is invalid.
func (t Topic) Validate() error {
return validateResource(string(t), "topics")
}
// Split returns the Topic's project component. If no project is
// defined (malformed), an empty string will be returned.
func (t Topic) Split() (p, n string) {
p, n, _ = t.SplitErr()
return
}
// SplitErr returns the Topic's project and name components.
func (t Topic) SplitErr() (p, n string, err error) {
p, n, err = resourceProjectName(string(t))
return
}