144 lines
3.4 KiB
Go
144 lines
3.4 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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"context"
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"sync"
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"github.com/cloudwego/eino/callbacks"
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"github.com/cloudwego/eino/components/model"
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"github.com/cloudwego/eino/schema"
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callbacks2 "github.com/cloudwego/eino/utils/callbacks"
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"github.com/coze-dev/coze-studio/backend/pkg/safego"
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)
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type TokenCollector struct {
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Key string
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Usage *model.TokenUsage
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wg sync.WaitGroup
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mu sync.Mutex
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Parent *TokenCollector
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}
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func newTokenCollector(key string, parent *TokenCollector) *TokenCollector {
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return &TokenCollector{
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Key: key,
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Usage: &model.TokenUsage{},
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Parent: parent,
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}
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}
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func (t *TokenCollector) addTokenUsage(usage *model.TokenUsage) {
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t.mu.Lock()
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defer t.mu.Unlock()
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t.Usage.PromptTokens += usage.PromptTokens
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t.Usage.CompletionTokens += usage.CompletionTokens
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t.Usage.TotalTokens += usage.TotalTokens
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if t.Parent != nil {
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t.Parent.addTokenUsage(usage)
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}
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}
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func (t *TokenCollector) wait() *model.TokenUsage {
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t.wg.Wait()
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t.mu.Lock()
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usage := &model.TokenUsage{
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PromptTokens: t.Usage.PromptTokens,
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CompletionTokens: t.Usage.CompletionTokens,
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TotalTokens: t.Usage.TotalTokens,
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}
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t.mu.Unlock()
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return usage
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}
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func getTokenCollector(ctx context.Context) *TokenCollector {
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c := GetExeCtx(ctx)
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if c == nil {
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return nil
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}
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return c.TokenCollector
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}
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func GetTokenCallbackHandler() callbacks.Handler {
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return callbacks2.NewHandlerHelper().ChatModel(&callbacks2.ModelCallbackHandler{
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OnStart: func(ctx context.Context, runInfo *callbacks.RunInfo, input *model.CallbackInput) context.Context {
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c := getTokenCollector(ctx)
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if c == nil {
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return ctx
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}
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c.wg.Add(1)
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return ctx
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},
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OnEnd: func(ctx context.Context, runInfo *callbacks.RunInfo, output *model.CallbackOutput) context.Context {
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c := getTokenCollector(ctx)
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if c == nil {
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return ctx
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}
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if output.TokenUsage == nil {
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c.wg.Done()
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return ctx
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}
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c.addTokenUsage(output.TokenUsage)
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c.wg.Done()
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return ctx
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},
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OnEndWithStreamOutput: func(ctx context.Context, runInfo *callbacks.RunInfo, output *schema.StreamReader[*model.CallbackOutput]) context.Context {
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c := getTokenCollector(ctx)
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if c == nil {
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output.Close()
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return ctx
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}
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safego.Go(ctx, func() {
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defer func() {
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output.Close()
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c.wg.Done()
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}()
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newC := &model.TokenUsage{}
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for {
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chunk, err := output.Recv()
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if err != nil {
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break
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}
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if chunk.TokenUsage == nil {
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continue
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}
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newC.PromptTokens += chunk.TokenUsage.PromptTokens
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newC.CompletionTokens += chunk.TokenUsage.CompletionTokens
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newC.TotalTokens += chunk.TokenUsage.TotalTokens
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}
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c.addTokenUsage(newC)
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})
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return ctx
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},
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OnError: func(ctx context.Context, runInfo *callbacks.RunInfo, runErr error) context.Context {
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c := getTokenCollector(ctx)
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if c == nil {
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return ctx
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}
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c.wg.Done()
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return ctx
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},
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}).Handler()
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}
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