75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
/*
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* Copyright 2025 coze-dev 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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*/
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package execute
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import (
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"errors"
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"io"
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"sync"
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"github.com/cloudwego/eino/schema"
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"github.com/coze-dev/coze-studio/backend/domain/workflow/entity"
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)
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type StreamContainer struct {
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sw *schema.StreamWriter[*entity.Message]
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subStreams chan *schema.StreamReader[*entity.Message]
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wg sync.WaitGroup
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}
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func NewStreamContainer(sw *schema.StreamWriter[*entity.Message]) *StreamContainer {
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return &StreamContainer{
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sw: sw,
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subStreams: make(chan *schema.StreamReader[*entity.Message]),
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}
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}
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func (sc *StreamContainer) AddChild(sr *schema.StreamReader[*entity.Message]) {
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sc.wg.Add(1)
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sc.subStreams <- sr
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}
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func (sc *StreamContainer) PipeAll() {
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sc.wg.Add(1)
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for sr := range sc.subStreams {
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go func() {
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defer sr.Close()
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for {
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msg, err := sr.Recv()
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if err != nil {
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if errors.Is(err, io.EOF) {
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sc.wg.Done()
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return
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}
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}
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sc.sw.Send(msg, err)
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}
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}()
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}
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}
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func (sc *StreamContainer) Done() {
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sc.wg.Done()
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sc.wg.Wait()
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close(sc.subStreams)
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sc.sw.Close()
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}
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