mirror of
https://github.com/httprunner/httprunner.git
synced 2026-06-02 22:39:42 +08:00
339 lines
8.9 KiB
Go
339 lines
8.9 KiB
Go
package ai
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import (
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"bytes"
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"context"
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"encoding/base64"
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"fmt"
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"image"
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"image/color"
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"image/draw"
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_ "image/jpeg"
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"image/png"
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"os"
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"strings"
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"time"
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"github.com/cloudwego/eino-ext/components/model/openai"
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"github.com/cloudwego/eino/components/model"
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"github.com/cloudwego/eino/schema"
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"github.com/httprunner/httprunner/v5/uixt/types"
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"github.com/pkg/errors"
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"github.com/rs/zerolog/log"
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)
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// Error types
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var (
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ErrEmptyInstruction = fmt.Errorf("user instruction is empty")
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ErrNoConversationHistory = fmt.Errorf("conversation history is empty")
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ErrInvalidImageData = fmt.Errorf("invalid image data")
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)
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func NewPlanner(ctx context.Context) (*Planner, error) {
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config, err := GetModelConfig()
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if err != nil {
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return nil, fmt.Errorf("failed to create OpenAI config: %w", err)
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}
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model, err := openai.NewChatModel(ctx, config)
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if err != nil {
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return nil, fmt.Errorf("failed to initialize OpenAI model: %w", err)
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}
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parser := NewActionParser(1000)
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return &Planner{
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ctx: ctx,
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config: config,
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model: model,
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systemPrompt: uiTarsPlanningPrompt,
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parser: parser,
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}, nil
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}
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type Planner struct {
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ctx context.Context
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model model.ChatModel
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config *openai.ChatModelConfig
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systemPrompt string
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parser *ActionParser
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history []*schema.Message // conversation history
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}
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// Call performs UI planning using Vision Language Model
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func (p *Planner) Call(opts *PlanningOptions) (*PlanningResult, error) {
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// validate input parameters
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if err := validateInput(opts); err != nil {
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return nil, errors.Wrap(err, "validate input parameters failed")
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}
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// prepare prompt
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if len(p.history) == 0 {
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// add system message
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systemPrompt := uiTarsPlanningPrompt + opts.UserInstruction
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p.history = []*schema.Message{
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{
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Role: schema.System,
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Content: systemPrompt,
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},
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}
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}
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// append user image message
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p.appendConversationHistory(opts.Message)
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// call model service, generate response
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logRequest(p.history)
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startTime := time.Now()
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resp, err := p.model.Generate(p.ctx, p.history)
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log.Info().Float64("elapsed(s)", time.Since(startTime).Seconds()).
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Str("model", p.config.Model).Msg("call model service")
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if err != nil {
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return nil, fmt.Errorf("request model service failed: %w", err)
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}
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logResponse(resp)
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// parse result
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result, err := p.parseResult(resp, opts.Size)
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if err != nil {
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return nil, errors.Wrap(err, "parse result failed")
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}
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// append assistant message
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p.appendConversationHistory(&schema.Message{
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Role: schema.Assistant,
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Content: result.ActionSummary,
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})
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return result, nil
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}
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func validateInput(opts *PlanningOptions) error {
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if opts.UserInstruction == "" {
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return ErrEmptyInstruction
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}
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if opts.Message == nil {
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return ErrNoConversationHistory
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}
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if opts.Message.Role == schema.User {
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// check MultiContent
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if len(opts.Message.MultiContent) > 0 {
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for _, content := range opts.Message.MultiContent {
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if content.Type == schema.ChatMessagePartTypeImageURL && content.ImageURL == nil {
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return ErrInvalidImageData
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}
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}
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}
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}
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return nil
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}
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func logRequest(messages []*schema.Message) {
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msgs := make([]*schema.Message, 0, len(messages))
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for _, message := range messages {
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msg := &schema.Message{
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Role: message.Role,
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}
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if message.Content != "" {
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msg.Content = message.Content
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} else if len(message.MultiContent) > 0 {
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for _, mc := range message.MultiContent {
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switch mc.Type {
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case schema.ChatMessagePartTypeImageURL:
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// Create a copy of the ImageURL to avoid modifying the original message
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imageURLCopy := *mc.ImageURL
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if strings.HasPrefix(imageURLCopy.URL, "data:image/") {
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imageURLCopy.URL = "<data:image/base64...>"
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}
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msg.MultiContent = append(msg.MultiContent, schema.ChatMessagePart{
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Type: mc.Type,
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ImageURL: &imageURLCopy,
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})
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}
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}
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}
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msgs = append(msgs, msg)
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}
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log.Debug().Interface("messages", msgs).Msg("log request messages")
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}
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func logResponse(resp *schema.Message) {
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logger := log.Info().Str("role", string(resp.Role)).
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Str("content", resp.Content)
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if resp.ResponseMeta != nil {
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logger = logger.Interface("response_meta", resp.ResponseMeta)
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}
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if resp.Extra != nil {
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logger = logger.Interface("extra", resp.Extra)
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}
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logger.Msg("log response message")
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}
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// appendConversationHistory adds a message to the conversation history
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func (p *Planner) appendConversationHistory(msg *schema.Message) {
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// for user image message:
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// - keep at most 4 user image messages
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// - delete the oldest user image message when the limit is reached
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if msg.Role == schema.User {
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// get all existing user messages
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userImgCount := 0
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firstUserImgIndex := -1
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// calculate the number of user messages and find the index of the first user message
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for i, item := range p.history {
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if item.Role == schema.User {
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userImgCount++
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if firstUserImgIndex == -1 {
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firstUserImgIndex = i
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}
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}
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}
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// if there are already 4 user messages, delete the first one before adding the new message
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if userImgCount >= 4 && firstUserImgIndex >= 0 {
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// delete the first user message
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p.history = append(
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p.history[:firstUserImgIndex],
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p.history[firstUserImgIndex+1:]...,
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)
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}
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// add the new user message to the history
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p.history = append(p.history, msg)
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}
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// for assistant message:
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// - keep at most the last 10 assistant messages
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if msg.Role == schema.Assistant {
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// add the new assistant message to the history
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p.history = append(p.history, msg)
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// if there are more than 10 assistant messages, remove the oldest ones
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assistantMsgCount := 0
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for i := len(p.history) - 1; i >= 0; i-- {
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if p.history[i].Role == schema.Assistant {
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assistantMsgCount++
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if assistantMsgCount > 10 {
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p.history = append(p.history[:i], p.history[i+1:]...)
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}
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}
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}
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}
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}
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func (p *Planner) parseResult(msg *schema.Message, size types.Size) (*PlanningResult, error) {
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// parse response
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parseActions, err := p.parser.Parse(msg.Content)
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if err != nil {
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return nil, fmt.Errorf("failed to parse actions: %w", err)
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}
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// process response
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result, err := processVLMResponse(parseActions, size)
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if err != nil {
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return nil, errors.Wrap(err, "process VLM response failed")
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}
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log.Info().
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Interface("summary", result.ActionSummary).
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Interface("actions", result.NextActions).
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Msg("get VLM planning result")
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return result, nil
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}
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// SavePositionImg saves an image with position markers
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func SavePositionImg(params struct {
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InputImgBase64 string
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Rect struct {
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X float64
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Y float64
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}
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OutputPath string
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}) error {
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// 解码Base64图像
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imgData := params.InputImgBase64
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// 如果包含了数据URL前缀，去掉它
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if strings.HasPrefix(imgData, "data:image/") {
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parts := strings.Split(imgData, ",")
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if len(parts) > 1 {
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imgData = parts[1]
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}
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}
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// 解码Base64
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unbased, err := base64.StdEncoding.DecodeString(imgData)
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if err != nil {
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return fmt.Errorf("无法解码Base64图像: %w", err)
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}
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// 解码图像
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reader := bytes.NewReader(unbased)
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img, _, err := image.Decode(reader)
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if err != nil {
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return fmt.Errorf("无法解码图像数据: %w", err)
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}
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// 创建一个可以在其上绘制的图像
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bounds := img.Bounds()
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rgba := image.NewRGBA(bounds)
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draw.Draw(rgba, bounds, img, bounds.Min, draw.Src)
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// 在点击/拖动位置绘制标记
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markRadius := 10
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x, y := int(params.Rect.X), int(params.Rect.Y)
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// 绘制红色圆圈
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for i := -markRadius; i <= markRadius; i++ {
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for j := -markRadius; j <= markRadius; j++ {
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if i*i+j*j <= markRadius*markRadius {
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if x+i >= 0 && x+i < bounds.Max.X && y+j >= 0 && y+j < bounds.Max.Y {
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rgba.Set(x+i, y+j, color.RGBA{255, 0, 0, 255})
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}
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}
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}
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}
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// 保存图像
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outFile, err := os.Create(params.OutputPath)
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if err != nil {
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return fmt.Errorf("无法创建输出文件: %w", err)
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}
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defer outFile.Close()
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// 编码为PNG并保存
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if err := png.Encode(outFile, rgba); err != nil {
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return fmt.Errorf("无法编码和保存图像: %w", err)
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}
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return nil
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}
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// loadImage loads image and returns base64 encoded string
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func loadImage(imagePath string) (base64Str string, size types.Size, err error) {
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// Read the image file
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imageFile, err := os.Open(imagePath)
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if err != nil {
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return "", types.Size{}, fmt.Errorf("failed to open image file: %w", err)
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}
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defer imageFile.Close()
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// Decode the image to get its resolution
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imageData, format, err := image.Decode(imageFile)
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if err != nil {
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return "", types.Size{}, fmt.Errorf("failed to decode image: %w", err)
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}
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// Get the resolution of the image
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width := imageData.Bounds().Dx()
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height := imageData.Bounds().Dy()
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size = types.Size{Width: width, Height: height}
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// Convert image to base64
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buf := new(bytes.Buffer)
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if err := png.Encode(buf, imageData); err != nil {
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return "", types.Size{}, fmt.Errorf("failed to encode image to buffer: %w", err)
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}
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base64Str = fmt.Sprintf("data:image/%s;base64,%s", format,
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base64.StdEncoding.EncodeToString(buf.Bytes()))
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return base64Str, size, nil
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}
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