wehub-resource-sync
101 lines
3.1 KiB
Go
101 lines
3.1 KiB
Go
/*
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* Copyright 2024 CloudWeGo 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 host
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import (
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"context"
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"fmt"
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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/flow/agent"
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"github.com/cloudwego/eino/schema"
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template "github.com/cloudwego/eino/utils/callbacks"
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)
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// MultiAgentCallback is the callback interface for host multi-agent.
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type MultiAgentCallback interface {
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OnHandOff(ctx context.Context, info *HandOffInfo) context.Context
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}
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// HandOffInfo is the info which will be passed to MultiAgentCallback.OnHandOff, representing a hand off event.
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type HandOffInfo struct {
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ToAgentName string
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Argument string
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}
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// ConvertCallbackHandlers converts []host.MultiAgentCallback to callbacks.Handler.
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func ConvertCallbackHandlers(handlers ...MultiAgentCallback) callbacks.Handler {
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onChatModelEnd := func(ctx context.Context, info *callbacks.RunInfo, output *model.CallbackOutput) context.Context {
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msg := output.Message
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if msg == nil || msg.Role != schema.Assistant || len(msg.ToolCalls) == 0 {
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return ctx
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}
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for _, cb := range handlers {
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for _, toolCall := range msg.ToolCalls {
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ctx = cb.OnHandOff(ctx, &HandOffInfo{
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ToAgentName: toolCall.Function.Name,
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Argument: toolCall.Function.Arguments,
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})
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}
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}
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return ctx
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}
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onChatModelEndWithStreamOutput := func(ctx context.Context, info *callbacks.RunInfo, output *schema.StreamReader[*model.CallbackOutput]) context.Context {
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go func() {
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msg, err := schema.ConcatMessageStream(schema.StreamReaderWithConvert(output,
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func(m *model.CallbackOutput) (*schema.Message, error) {
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return m.Message, nil
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}))
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if err != nil {
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fmt.Printf("concat message stream for host multi-agent failed: %v", err)
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return
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}
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for _, cb := range handlers {
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for _, tc := range msg.ToolCalls {
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_ = cb.OnHandOff(ctx, &HandOffInfo{
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ToAgentName: tc.Function.Name,
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Argument: tc.Function.Arguments,
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})
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}
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}
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}()
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return ctx
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}
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return template.NewHandlerHelper().ChatModel(&template.ModelCallbackHandler{
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OnEnd: onChatModelEnd,
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OnEndWithStreamOutput: onChatModelEndWithStreamOutput,
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}).Handler()
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}
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// convertCallbacks reads graph call options, extract host.MultiAgentCallback and convert it to callbacks.Handler.
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func convertCallbacks(opts ...agent.AgentOption) callbacks.Handler {
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agentOptions := agent.GetImplSpecificOptions(&options{}, opts...)
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if len(agentOptions.agentCallbacks) == 0 {
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return nil
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}
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handlers := agentOptions.agentCallbacks
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return ConvertCallbackHandlers(handlers...)
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}
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