mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-11-23 02:11:01 +00:00
89 lines
1.7 KiB
Go
89 lines
1.7 KiB
Go
// Copyright 2023 Woodpecker Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pubsub
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import (
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"context"
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"sync"
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)
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type subscriber struct {
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receiver Receiver
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}
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type publisher struct {
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sync.Mutex
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topics map[string]*topic
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}
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// New creates an in-memory publisher.
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func New() Publisher {
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return &publisher{
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topics: make(map[string]*topic),
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}
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}
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func (p *publisher) Create(_ context.Context, dest string) error {
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p.Lock()
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_, ok := p.topics[dest]
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if !ok {
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t := newTopic(dest)
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p.topics[dest] = t
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}
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p.Unlock()
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return nil
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}
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func (p *publisher) Publish(_ context.Context, dest string, message Message) error {
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p.Lock()
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t, ok := p.topics[dest]
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p.Unlock()
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if !ok {
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return ErrNotFound
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}
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t.publish(message)
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return nil
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}
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func (p *publisher) Subscribe(c context.Context, dest string, receiver Receiver) error {
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p.Lock()
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t, ok := p.topics[dest]
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p.Unlock()
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if !ok {
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return ErrNotFound
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}
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s := &subscriber{
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receiver: receiver,
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}
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t.subscribe(s)
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select {
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case <-c.Done():
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case <-t.done:
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}
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t.unsubscribe(s)
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return nil
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}
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func (p *publisher) Remove(_ context.Context, dest string) error {
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p.Lock()
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t, ok := p.topics[dest]
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if ok {
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delete(p.topics, dest)
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t.close()
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}
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p.Unlock()
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return nil
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}
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