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91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
/*
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* Copyright 2025 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 tool
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import (
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"context"
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"fmt"
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"log"
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"strings"
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"github.com/cloudwego/eino/components/tool"
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"github.com/cloudwego/eino/components/tool/utils"
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"github.com/cloudwego/eino/schema"
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)
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// FollowUpInfo is the information presented to the user during an interrupt.
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type FollowUpInfo struct {
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Questions []string
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UserAnswer string // This field will be populated by the user.
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}
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func (fi *FollowUpInfo) String() string {
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var sb strings.Builder
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sb.WriteString("We need more information. Please answer the following questions:\n")
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for i, q := range fi.Questions {
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_, _ = fmt.Fprintf(&sb, "%d. %s\n", i+1, q)
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}
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return sb.String()
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}
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// FollowUpState is the state saved during the interrupt.
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type FollowUpState struct {
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Questions []string
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}
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// FollowUpToolInput defines the input schema for our tool.
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type FollowUpToolInput struct {
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Questions []string `json:"questions"`
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}
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func init() {
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schema.Register[*FollowUpInfo]()
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schema.Register[*FollowUpState]()
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}
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func FollowUp(ctx context.Context, input *FollowUpToolInput) (string, error) {
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wasInterrupted, _, storedState := tool.GetInterruptState[*FollowUpState](ctx)
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if !wasInterrupted {
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info := &FollowUpInfo{Questions: input.Questions}
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state := &FollowUpState{Questions: input.Questions}
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return "", tool.StatefulInterrupt(ctx, info, state)
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}
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isResumeTarget, hasData, resumeData := tool.GetResumeContext[*FollowUpInfo](ctx)
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if !isResumeTarget {
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info := &FollowUpInfo{Questions: storedState.Questions}
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return "", tool.StatefulInterrupt(ctx, info, storedState)
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}
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if !hasData || resumeData.UserAnswer == "" {
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return "", fmt.Errorf("tool resumed without a user answer")
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}
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return resumeData.UserAnswer, nil
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}
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func GetFollowUpTool() tool.InvokableTool {
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t, err := utils.InferTool("FollowUpTool", "Asks the user for more information by providing a list of questions.", FollowUp)
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if err != nil {
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log.Fatal(err)
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}
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return t
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}
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