mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2026-04-15 01:41:56 +00:00
90 lines
1.9 KiB
Go
90 lines
1.9 KiB
Go
// Copyright 2026 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 memory
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import (
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"context"
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"fmt"
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"slices"
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"sync"
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"github.com/rs/zerolog/log"
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"go.woodpecker-ci.org/woodpecker/v3/server/pubsub"
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)
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type publisher struct {
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sync.RWMutex
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subs map[*pubsub.Receiver][]string
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}
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// New creates an in-memory publisher.
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func New() pubsub.PubSub {
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return &publisher{
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subs: make(map[*pubsub.Receiver][]string),
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}
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}
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func (p *publisher) Publish(_ context.Context, topics pubsub.Topics, message pubsub.Message) error {
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if len(topics) == 0 {
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return fmt.Errorf("%w: specify at least one", pubsub.ErrNoTopic)
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}
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p.RLock()
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defer p.RUnlock()
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for s, tl := range p.subs {
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// callback is from outside so just make sure it still exists
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if s == nil || *s == nil {
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log.Error().Msg("found nil callback func in subscribers!")
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continue
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}
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for t := range topics {
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if slices.Contains(tl, t) {
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go (*s)(message)
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break
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}
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}
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}
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return nil
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}
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func (p *publisher) Subscribe(c context.Context, topics pubsub.Topics, receiver pubsub.Receiver) error {
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if len(topics) == 0 {
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return fmt.Errorf("%w: subscribe to at least one", pubsub.ErrNoTopic)
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}
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var tl []string
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for k := range topics {
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tl = append(tl, k)
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}
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defer func() {
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p.Lock()
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delete(p.subs, &receiver)
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p.Unlock()
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}()
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p.Lock()
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p.subs[&receiver] = tl
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p.Unlock()
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<-c.Done()
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return nil
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}
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