94 lines
2 KiB
Go
94 lines
2 KiB
Go
// Copyright 2019 Drone IO, Inc.
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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 livelog
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import (
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"context"
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"errors"
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"sync"
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"github.com/drone/drone/core"
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)
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// error returned when a stream is not registered with
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// the streamer.
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var errStreamNotFound = errors.New("stream: not found")
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type streamer struct {
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sync.Mutex
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streams map[int64]*stream
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}
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// New returns a new in-memory log streamer.
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func newStreamer() core.LogStream {
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return &streamer{
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streams: make(map[int64]*stream),
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}
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}
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func (s *streamer) Create(ctx context.Context, id int64) error {
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s.Lock()
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s.streams[id] = newStream()
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s.Unlock()
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return nil
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}
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func (s *streamer) Delete(ctx context.Context, id int64) error {
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s.Lock()
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stream, ok := s.streams[id]
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if ok {
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delete(s.streams, id)
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}
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s.Unlock()
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if !ok {
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return errStreamNotFound
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}
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return stream.close()
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}
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func (s *streamer) Write(ctx context.Context, id int64, line *core.Line) error {
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s.Lock()
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stream, ok := s.streams[id]
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s.Unlock()
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if !ok {
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return errStreamNotFound
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}
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return stream.write(line)
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}
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func (s *streamer) Tail(ctx context.Context, id int64) (<-chan *core.Line, <-chan error) {
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s.Lock()
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stream, ok := s.streams[id]
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s.Unlock()
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if !ok {
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return nil, nil
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}
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return stream.subscribe(ctx)
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}
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func (s *streamer) Info(ctx context.Context) *core.LogStreamInfo {
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s.Lock()
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defer s.Unlock()
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info := &core.LogStreamInfo{
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Streams: map[int64]int{},
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}
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for id, stream := range s.streams {
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stream.Lock()
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info.Streams[id] = len(stream.list)
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stream.Unlock()
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}
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return info
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}
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