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807 lines
27 KiB
Go
807 lines
27 KiB
Go
package provider
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import (
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"encoding/json"
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"errors"
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"fmt"
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"math"
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"reflect"
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"strings"
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"time"
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"github.com/alibaba/higress/plugins/wasm-go/extensions/ai-proxy/util"
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"github.com/alibaba/higress/plugins/wasm-go/pkg/wrapper"
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"github.com/higress-group/proxy-wasm-go-sdk/proxywasm"
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"github.com/higress-group/proxy-wasm-go-sdk/proxywasm/types"
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"github.com/tidwall/gjson"
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"github.com/tidwall/sjson"
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)
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// qwenProvider is the provider for Qwen service.
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const (
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qwenResultFormatMessage = "message"
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qwenDomain = "dashscope.aliyuncs.com"
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qwenChatCompletionPath = "/api/v1/services/aigc/text-generation/generation"
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qwenTextEmbeddingPath = "/api/v1/services/embeddings/text-embedding/text-embedding"
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qwenCompatiblePath = "/compatible-mode/v1/chat/completions"
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qwenMultimodalGenerationPath = "/api/v1/services/aigc/multimodal-generation/generation"
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qwenTopPMin = 0.000001
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qwenTopPMax = 0.999999
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qwenDummySystemMessageContent = "You are a helpful assistant."
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qwenLongModelName = "qwen-long"
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qwenVlModelPrefixName = "qwen-vl"
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)
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type qwenProviderInitializer struct {
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}
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func (m *qwenProviderInitializer) ValidateConfig(config ProviderConfig) error {
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if len(config.qwenFileIds) != 0 && config.context != nil {
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return errors.New("qwenFileIds and context cannot be configured at the same time")
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}
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if config.apiTokens == nil || len(config.apiTokens) == 0 {
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return errors.New("no apiToken found in provider config")
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}
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return nil
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}
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func (m *qwenProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
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return &qwenProvider{
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config: config,
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contextCache: createContextCache(&config),
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}, nil
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}
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type qwenProvider struct {
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config ProviderConfig
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contextCache *contextCache
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}
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func (m *qwenProvider) GetProviderType() string {
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return providerTypeQwen
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}
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func (m *qwenProvider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, log wrapper.Log) (types.Action, error) {
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_ = util.OverwriteRequestHost(qwenDomain)
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_ = util.OverwriteRequestAuthorization("Bearer " + m.config.GetRandomToken())
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if m.config.protocol == protocolOriginal {
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ctx.DontReadRequestBody()
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return types.ActionContinue, nil
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} else if m.config.qwenEnableCompatible {
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_ = util.OverwriteRequestPath(qwenCompatiblePath)
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} else if apiName == ApiNameChatCompletion {
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_ = util.OverwriteRequestPath(qwenChatCompletionPath)
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} else if apiName == ApiNameEmbeddings {
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_ = util.OverwriteRequestPath(qwenTextEmbeddingPath)
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} else {
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return types.ActionContinue, errUnsupportedApiName
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}
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_ = proxywasm.RemoveHttpRequestHeader("Accept-Encoding")
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_ = proxywasm.RemoveHttpRequestHeader("Content-Length")
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// Delay the header processing to allow changing streaming mode in OnRequestBody
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return types.HeaderStopIteration, nil
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}
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func (m *qwenProvider) OnRequestBody(ctx wrapper.HttpContext, apiName ApiName, body []byte, log wrapper.Log) (types.Action, error) {
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if m.config.qwenEnableCompatible {
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if gjson.GetBytes(body, "model").Exists() {
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rawModel := gjson.GetBytes(body, "model").String()
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mappedModel := getMappedModel(rawModel, m.config.modelMapping, log)
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newBody, err := sjson.SetBytes(body, "model", mappedModel)
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if err != nil {
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log.Errorf("Replace model error: %v", err)
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return types.ActionContinue, err
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}
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// TODO: Temporary fix to clamp top_p value to the range [qwenTopPMin, qwenTopPMax].
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if topPValue := gjson.GetBytes(body, "top_p"); topPValue.Exists() {
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rawTopP := topPValue.Float()
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scaledTopP := math.Max(qwenTopPMin, math.Min(rawTopP, qwenTopPMax))
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newBody, err = sjson.SetBytes(newBody, "top_p", scaledTopP)
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if err != nil {
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log.Errorf("Failed to replace top_p: %v", err)
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return types.ActionContinue, err
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}
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}
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err = proxywasm.ReplaceHttpRequestBody(newBody)
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if err != nil {
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log.Errorf("Replace request body error: %v", err)
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return types.ActionContinue, err
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}
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}
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return types.ActionContinue, nil
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}
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if apiName == ApiNameChatCompletion {
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return m.onChatCompletionRequestBody(ctx, body, log)
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}
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if apiName == ApiNameEmbeddings {
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return m.onEmbeddingsRequestBody(ctx, body, log)
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}
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return types.ActionContinue, errUnsupportedApiName
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}
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func (m *qwenProvider) onChatCompletionRequestBody(ctx wrapper.HttpContext, body []byte, log wrapper.Log) (types.Action, error) {
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if m.config.protocol == protocolOriginal {
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if m.config.context == nil {
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return types.ActionContinue, nil
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}
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request := &qwenTextGenRequest{}
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if err := json.Unmarshal(body, request); err != nil {
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return types.ActionContinue, fmt.Errorf("unable to unmarshal request: %v", err)
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}
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err := m.contextCache.GetContent(func(content string, err error) {
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defer func() {
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_ = proxywasm.ResumeHttpRequest()
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}()
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if err != nil {
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log.Errorf("failed to load context file: %v", err)
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_ = util.SendResponse(500, "ai-proxy.qwen.load_ctx_failed", util.MimeTypeTextPlain, fmt.Sprintf("failed to load context file: %v", err))
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}
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m.insertContextMessage(request, content, false)
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if err := replaceJsonRequestBody(request, log); err != nil {
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_ = util.SendResponse(500, "ai-proxy.qwen.insert_ctx_failed", util.MimeTypeTextPlain, fmt.Sprintf("failed to replace request body: %v", err))
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}
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}, log)
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if err == nil {
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return types.ActionPause, nil
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}
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return types.ActionContinue, err
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}
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request := &chatCompletionRequest{}
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if err := decodeChatCompletionRequest(body, request); err != nil {
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return types.ActionContinue, err
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}
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model := request.Model
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if model == "" {
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return types.ActionContinue, errors.New("missing model in chat completion request")
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}
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ctx.SetContext(ctxKeyOriginalRequestModel, model)
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mappedModel := getMappedModel(model, m.config.modelMapping, log)
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if mappedModel == "" {
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return types.ActionContinue, errors.New("model becomes empty after applying the configured mapping")
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}
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request.Model = mappedModel
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ctx.SetContext(ctxKeyFinalRequestModel, request.Model)
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// Use the qwen multimodal model generation API
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if strings.HasPrefix(request.Model, qwenVlModelPrefixName) {
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_ = util.OverwriteRequestPath(qwenMultimodalGenerationPath)
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}
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streaming := request.Stream
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if streaming {
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_ = proxywasm.ReplaceHttpRequestHeader("Accept", "text/event-stream")
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_ = proxywasm.ReplaceHttpRequestHeader("X-DashScope-SSE", "enable")
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} else {
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_ = proxywasm.ReplaceHttpRequestHeader("Accept", "*/*")
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_ = proxywasm.RemoveHttpRequestHeader("X-DashScope-SSE")
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}
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if m.config.context == nil {
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qwenRequest := m.buildQwenTextGenerationRequest(request, streaming)
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if streaming {
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ctx.SetContext(ctxKeyIncrementalStreaming, qwenRequest.Parameters.IncrementalOutput)
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}
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return types.ActionContinue, replaceJsonRequestBody(qwenRequest, log)
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}
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err := m.contextCache.GetContent(func(content string, err error) {
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defer func() {
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_ = proxywasm.ResumeHttpRequest()
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}()
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if err != nil {
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log.Errorf("failed to load context file: %v", err)
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_ = util.SendResponse(500, "ai-proxy.qwen.load_ctx_failed", util.MimeTypeTextPlain, fmt.Sprintf("failed to load context file: %v", err))
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}
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insertContextMessage(request, content)
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qwenRequest := m.buildQwenTextGenerationRequest(request, streaming)
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if streaming {
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ctx.SetContext(ctxKeyIncrementalStreaming, qwenRequest.Parameters.IncrementalOutput)
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}
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if err := replaceJsonRequestBody(qwenRequest, log); err != nil {
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_ = util.SendResponse(500, "ai-proxy.qwen.insert_ctx_failed", util.MimeTypeTextPlain, fmt.Sprintf("failed to replace request body: %v", err))
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}
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}, log)
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if err == nil {
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return types.ActionPause, nil
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}
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return types.ActionContinue, err
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}
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func (m *qwenProvider) onEmbeddingsRequestBody(ctx wrapper.HttpContext, body []byte, log wrapper.Log) (types.Action, error) {
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request := &embeddingsRequest{}
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if err := json.Unmarshal(body, request); err != nil {
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return types.ActionContinue, fmt.Errorf("unable to unmarshal request: %v", err)
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}
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log.Debugf("=== embeddings request: %v", request)
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model := request.Model
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if model == "" {
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return types.ActionContinue, errors.New("missing model in the request")
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}
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ctx.SetContext(ctxKeyOriginalRequestModel, model)
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mappedModel := getMappedModel(model, m.config.modelMapping, log)
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if mappedModel == "" {
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return types.ActionContinue, errors.New("model becomes empty after applying the configured mapping")
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}
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request.Model = mappedModel
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ctx.SetContext(ctxKeyFinalRequestModel, request.Model)
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if qwenRequest, err := m.buildQwenTextEmbeddingRequest(request); err == nil {
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return types.ActionContinue, replaceJsonRequestBody(qwenRequest, log)
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} else {
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return types.ActionContinue, err
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}
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}
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func (m *qwenProvider) OnResponseHeaders(ctx wrapper.HttpContext, apiName ApiName, log wrapper.Log) (types.Action, error) {
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if m.config.protocol == protocolOriginal {
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ctx.DontReadResponseBody()
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return types.ActionContinue, nil
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}
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_ = proxywasm.RemoveHttpResponseHeader("Content-Length")
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return types.ActionContinue, nil
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}
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func (m *qwenProvider) OnStreamingResponseBody(ctx wrapper.HttpContext, name ApiName, chunk []byte, isLastChunk bool, log wrapper.Log) ([]byte, error) {
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if m.config.qwenEnableCompatible || name != ApiNameChatCompletion {
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return chunk, nil
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}
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receivedBody := chunk
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if bufferedStreamingBody, has := ctx.GetContext(ctxKeyStreamingBody).([]byte); has {
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receivedBody = append(bufferedStreamingBody, chunk...)
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}
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incrementalStreaming := ctx.GetBoolContext(ctxKeyIncrementalStreaming, false)
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eventStartIndex, lineStartIndex, valueStartIndex := -1, -1, -1
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defer func() {
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if eventStartIndex >= 0 && eventStartIndex < len(receivedBody) {
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// Just in case the received chunk is not a complete event.
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ctx.SetContext(ctxKeyStreamingBody, receivedBody[eventStartIndex:])
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} else {
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ctx.SetContext(ctxKeyStreamingBody, nil)
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}
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}()
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// Sample Qwen event response:
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//
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// event:result
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// :HTTP_STATUS/200
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// data:{"output":{"choices":[{"message":{"content":"你好！","role":"assistant"},"finish_reason":"null"}]},"usage":{"total_tokens":116,"input_tokens":114,"output_tokens":2},"request_id":"71689cfc-1f42-9949-86e8-9563b7f832b1"}
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//
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// event:error
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// :HTTP_STATUS/400
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// data:{"code":"InvalidParameter","message":"Preprocessor error","request_id":"0cbe6006-faec-9854-bf8b-c906d75c3bd8"}
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//
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var responseBuilder strings.Builder
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currentKey := ""
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currentEvent := &streamEvent{}
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i, length := 0, len(receivedBody)
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for i = 0; i < length; i++ {
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ch := receivedBody[i]
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if ch != '\n' {
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if lineStartIndex == -1 {
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if eventStartIndex == -1 {
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eventStartIndex = i
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}
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lineStartIndex = i
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valueStartIndex = -1
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}
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if valueStartIndex == -1 {
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if ch == ':' {
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valueStartIndex = i + 1
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currentKey = string(receivedBody[lineStartIndex:valueStartIndex])
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}
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} else if valueStartIndex == i && ch == ' ' {
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// Skip leading spaces in data.
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valueStartIndex = i + 1
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}
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continue
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}
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if lineStartIndex != -1 {
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value := string(receivedBody[valueStartIndex:i])
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currentEvent.setValue(currentKey, value)
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} else {
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// Extra new line. The current event is complete.
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log.Debugf("processing event: %v", currentEvent)
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if err := m.convertStreamEvent(ctx, &responseBuilder, currentEvent, incrementalStreaming, log); err != nil {
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return nil, err
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}
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// Reset event parsing state.
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eventStartIndex = -1
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currentEvent = &streamEvent{}
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}
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// Reset line parsing state.
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lineStartIndex = -1
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valueStartIndex = -1
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currentKey = ""
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}
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modifiedResponseChunk := responseBuilder.String()
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log.Debugf("=== modified response chunk: %s", modifiedResponseChunk)
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return []byte(modifiedResponseChunk), nil
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}
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func (m *qwenProvider) OnResponseBody(ctx wrapper.HttpContext, apiName ApiName, body []byte, log wrapper.Log) (types.Action, error) {
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if m.config.qwenEnableCompatible {
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return types.ActionContinue, nil
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}
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if apiName == ApiNameChatCompletion {
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return m.onChatCompletionResponseBody(ctx, body, log)
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}
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if apiName == ApiNameEmbeddings {
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return m.onEmbeddingsResponseBody(ctx, body, log)
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}
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return types.ActionContinue, errUnsupportedApiName
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}
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func (m *qwenProvider) onChatCompletionResponseBody(ctx wrapper.HttpContext, body []byte, log wrapper.Log) (types.Action, error) {
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qwenResponse := &qwenTextGenResponse{}
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if err := json.Unmarshal(body, qwenResponse); err != nil {
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return types.ActionContinue, fmt.Errorf("unable to unmarshal Qwen response: %v", err)
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}
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response := m.buildChatCompletionResponse(ctx, qwenResponse)
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return types.ActionContinue, replaceJsonResponseBody(response, log)
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}
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func (m *qwenProvider) onEmbeddingsResponseBody(ctx wrapper.HttpContext, body []byte, log wrapper.Log) (types.Action, error) {
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qwenResponse := &qwenTextEmbeddingResponse{}
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if err := json.Unmarshal(body, qwenResponse); err != nil {
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return types.ActionContinue, fmt.Errorf("unable to unmarshal Qwen response: %v", err)
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}
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response := m.buildEmbeddingsResponse(ctx, qwenResponse)
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return types.ActionContinue, replaceJsonResponseBody(response, log)
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}
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func (m *qwenProvider) buildQwenTextGenerationRequest(origRequest *chatCompletionRequest, streaming bool) *qwenTextGenRequest {
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messages := make([]qwenMessage, 0, len(origRequest.Messages))
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for i := range origRequest.Messages {
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messages = append(messages, chatMessage2QwenMessage(origRequest.Messages[i]))
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}
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request := &qwenTextGenRequest{
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Model: origRequest.Model,
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Input: qwenTextGenInput{
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Messages: messages,
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},
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Parameters: qwenTextGenParameters{
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ResultFormat: qwenResultFormatMessage,
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MaxTokens: origRequest.MaxTokens,
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N: origRequest.N,
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Seed: origRequest.Seed,
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Temperature: origRequest.Temperature,
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TopP: math.Max(qwenTopPMin, math.Min(origRequest.TopP, qwenTopPMax)),
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IncrementalOutput: streaming && (origRequest.Tools == nil || len(origRequest.Tools) == 0),
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EnableSearch: m.config.qwenEnableSearch,
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Tools: origRequest.Tools,
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},
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}
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if len(m.config.qwenFileIds) != 0 && origRequest.Model == qwenLongModelName {
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builder := strings.Builder{}
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for _, fileId := range m.config.qwenFileIds {
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if builder.Len() != 0 {
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builder.WriteRune(',')
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}
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builder.WriteString("fileid://")
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builder.WriteString(fileId)
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}
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contextMessageId := m.insertContextMessage(request, builder.String(), true)
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if contextMessageId == 0 {
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// The context message cannot come first. We need to add another dummy system message before it.
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request.Input.Messages = append([]qwenMessage{{Role: roleSystem, Content: qwenDummySystemMessageContent}}, request.Input.Messages...)
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}
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}
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return request
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}
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func (m *qwenProvider) buildChatCompletionResponse(ctx wrapper.HttpContext, qwenResponse *qwenTextGenResponse) *chatCompletionResponse {
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choices := make([]chatCompletionChoice, 0, len(qwenResponse.Output.Choices))
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for _, qwenChoice := range qwenResponse.Output.Choices {
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message := qwenMessageToChatMessage(qwenChoice.Message)
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choices = append(choices, chatCompletionChoice{
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Message: &message,
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FinishReason: qwenChoice.FinishReason,
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})
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}
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return &chatCompletionResponse{
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Id: qwenResponse.RequestId,
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Created: time.Now().UnixMilli() / 1000,
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Model: ctx.GetStringContext(ctxKeyFinalRequestModel, ""),
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SystemFingerprint: "",
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Object: objectChatCompletion,
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Choices: choices,
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Usage: usage{
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PromptTokens: qwenResponse.Usage.InputTokens,
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CompletionTokens: qwenResponse.Usage.OutputTokens,
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TotalTokens: qwenResponse.Usage.TotalTokens,
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},
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}
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}
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func (m *qwenProvider) buildChatCompletionStreamingResponse(ctx wrapper.HttpContext, qwenResponse *qwenTextGenResponse, incrementalStreaming bool, log wrapper.Log) []*chatCompletionResponse {
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baseMessage := chatCompletionResponse{
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Id: qwenResponse.RequestId,
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Created: time.Now().UnixMilli() / 1000,
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Model: ctx.GetStringContext(ctxKeyFinalRequestModel, ""),
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Choices: make([]chatCompletionChoice, 0),
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SystemFingerprint: "",
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Object: objectChatCompletionChunk,
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}
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responses := make([]*chatCompletionResponse, 0)
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qwenChoice := qwenResponse.Output.Choices[0]
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// Yes, Qwen uses a string "null" as null.
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finished := qwenChoice.FinishReason != "" && qwenChoice.FinishReason != "null"
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message := qwenChoice.Message
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deltaContentMessage := &chatMessage{Role: message.Role, Content: message.Content}
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deltaToolCallsMessage := &chatMessage{Role: message.Role, ToolCalls: append([]toolCall{}, message.ToolCalls...)}
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if !incrementalStreaming {
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for _, tc := range message.ToolCalls {
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if tc.Function.Arguments == "" && !finished {
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// We don't push any tool call until its arguments are available.
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return nil
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}
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}
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if pushedMessage, ok := ctx.GetContext(ctxKeyPushedMessage).(qwenMessage); ok {
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if message.Content == "" {
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message.Content = pushedMessage.Content
|
|
} else if message.IsStringContent() {
|
|
deltaContentMessage.Content = util.StripPrefix(deltaContentMessage.StringContent(), pushedMessage.StringContent())
|
|
} else if strings.HasPrefix(baseMessage.Model, qwenVlModelPrefixName) {
|
|
// Use the Qwen multimodal model generation API
|
|
deltaContentList, ok := deltaContentMessage.Content.([]qwenVlMessageContent)
|
|
if !ok {
|
|
log.Warnf("unexpected deltaContentMessage content type: %T", deltaContentMessage.Content)
|
|
} else {
|
|
pushedContentList, ok := pushedMessage.Content.([]qwenVlMessageContent)
|
|
if !ok {
|
|
log.Warnf("unexpected pushedMessage content type: %T", pushedMessage.Content)
|
|
} else {
|
|
for i, content := range deltaContentList {
|
|
if i >= len(pushedContentList) {
|
|
break
|
|
}
|
|
pushedText := pushedContentList[i].Text
|
|
content.Text = util.StripPrefix(content.Text, pushedText)
|
|
deltaContentList[i] = content
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if len(deltaToolCallsMessage.ToolCalls) > 0 && pushedMessage.ToolCalls != nil {
|
|
for i, tc := range deltaToolCallsMessage.ToolCalls {
|
|
if i >= len(pushedMessage.ToolCalls) {
|
|
break
|
|
}
|
|
pushedFunction := pushedMessage.ToolCalls[i].Function
|
|
tc.Function.Id = util.StripPrefix(tc.Function.Id, pushedFunction.Id)
|
|
tc.Function.Name = util.StripPrefix(tc.Function.Name, pushedFunction.Name)
|
|
tc.Function.Arguments = util.StripPrefix(tc.Function.Arguments, pushedFunction.Arguments)
|
|
deltaToolCallsMessage.ToolCalls[i] = tc
|
|
}
|
|
}
|
|
}
|
|
ctx.SetContext(ctxKeyPushedMessage, message)
|
|
}
|
|
|
|
if !deltaContentMessage.IsEmpty() {
|
|
response := *&baseMessage
|
|
response.Choices = append(response.Choices, chatCompletionChoice{Delta: deltaContentMessage})
|
|
responses = append(responses, &response)
|
|
}
|
|
if !deltaToolCallsMessage.IsEmpty() {
|
|
response := *&baseMessage
|
|
response.Choices = append(response.Choices, chatCompletionChoice{Delta: deltaToolCallsMessage})
|
|
responses = append(responses, &response)
|
|
}
|
|
|
|
if finished {
|
|
finishResponse := *&baseMessage
|
|
finishResponse.Choices = append(finishResponse.Choices, chatCompletionChoice{Delta: &chatMessage{}, FinishReason: qwenChoice.FinishReason})
|
|
|
|
usageResponse := *&baseMessage
|
|
usageResponse.Choices = []chatCompletionChoice{{Delta: &chatMessage{}}}
|
|
usageResponse.Usage = usage{
|
|
PromptTokens: qwenResponse.Usage.InputTokens,
|
|
CompletionTokens: qwenResponse.Usage.OutputTokens,
|
|
TotalTokens: qwenResponse.Usage.TotalTokens,
|
|
}
|
|
|
|
responses = append(responses, &finishResponse, &usageResponse)
|
|
}
|
|
|
|
return responses
|
|
}
|
|
|
|
func (m *qwenProvider) convertStreamEvent(ctx wrapper.HttpContext, responseBuilder *strings.Builder, event *streamEvent, incrementalStreaming bool, log wrapper.Log) error {
|
|
if event.Data == streamEndDataValue {
|
|
m.appendStreamEvent(responseBuilder, event)
|
|
return nil
|
|
}
|
|
|
|
if event.Event != eventResult || event.HttpStatus != httpStatus200 {
|
|
// Something goes wrong. Just pass through the event.
|
|
m.appendStreamEvent(responseBuilder, event)
|
|
return nil
|
|
}
|
|
|
|
qwenResponse := &qwenTextGenResponse{}
|
|
if err := json.Unmarshal([]byte(event.Data), qwenResponse); err != nil {
|
|
log.Errorf("unable to unmarshal Qwen response: %v", err)
|
|
return fmt.Errorf("unable to unmarshal Qwen response: %v", err)
|
|
}
|
|
|
|
responses := m.buildChatCompletionStreamingResponse(ctx, qwenResponse, incrementalStreaming, log)
|
|
for _, response := range responses {
|
|
responseBody, err := json.Marshal(response)
|
|
if err != nil {
|
|
log.Errorf("unable to marshal response: %v", err)
|
|
return fmt.Errorf("unable to marshal response: %v", err)
|
|
}
|
|
modifiedEvent := &*event
|
|
modifiedEvent.Data = string(responseBody)
|
|
m.appendStreamEvent(responseBuilder, modifiedEvent)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (m *qwenProvider) insertContextMessage(request *qwenTextGenRequest, content string, onlyOneSystemBeforeFile bool) int {
|
|
fileMessage := qwenMessage{
|
|
Role: roleSystem,
|
|
Content: content,
|
|
}
|
|
var firstNonSystemMessageIndex int
|
|
messages := request.Input.Messages
|
|
if messages != nil {
|
|
for i, message := range request.Input.Messages {
|
|
if message.Role != roleSystem {
|
|
firstNonSystemMessageIndex = i
|
|
break
|
|
}
|
|
}
|
|
}
|
|
if firstNonSystemMessageIndex == 0 {
|
|
request.Input.Messages = append([]qwenMessage{fileMessage}, request.Input.Messages...)
|
|
return 0
|
|
} else if !onlyOneSystemBeforeFile {
|
|
request.Input.Messages = append(request.Input.Messages[:firstNonSystemMessageIndex], append([]qwenMessage{fileMessage}, request.Input.Messages[firstNonSystemMessageIndex:]...)...)
|
|
return firstNonSystemMessageIndex
|
|
} else {
|
|
builder := strings.Builder{}
|
|
for _, message := range request.Input.Messages[:firstNonSystemMessageIndex] {
|
|
if builder.Len() != 0 {
|
|
builder.WriteString("\n")
|
|
}
|
|
builder.WriteString(message.StringContent())
|
|
}
|
|
request.Input.Messages = append([]qwenMessage{{Role: roleSystem, Content: builder.String()}, fileMessage}, request.Input.Messages[firstNonSystemMessageIndex:]...)
|
|
return 1
|
|
}
|
|
}
|
|
|
|
func (m *qwenProvider) appendStreamEvent(responseBuilder *strings.Builder, event *streamEvent) {
|
|
responseBuilder.WriteString(streamDataItemKey)
|
|
responseBuilder.WriteString(event.Data)
|
|
responseBuilder.WriteString("\n\n")
|
|
}
|
|
|
|
func (m *qwenProvider) buildQwenTextEmbeddingRequest(request *embeddingsRequest) (*qwenTextEmbeddingRequest, error) {
|
|
var texts []string
|
|
if str, isString := request.Input.(string); isString {
|
|
texts = []string{str}
|
|
} else if strs, isArray := request.Input.([]interface{}); isArray {
|
|
texts = make([]string, 0, len(strs))
|
|
for _, item := range strs {
|
|
if str, isString := item.(string); isString {
|
|
texts = append(texts, str)
|
|
} else {
|
|
return nil, errors.New("unsupported input type in array: " + reflect.TypeOf(item).String())
|
|
}
|
|
}
|
|
} else {
|
|
return nil, errors.New("unsupported input type: " + reflect.TypeOf(request.Input).String())
|
|
}
|
|
return &qwenTextEmbeddingRequest{
|
|
Model: request.Model,
|
|
Input: qwenTextEmbeddingInput{
|
|
Texts: texts,
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
func (m *qwenProvider) buildEmbeddingsResponse(ctx wrapper.HttpContext, qwenResponse *qwenTextEmbeddingResponse) *embeddingsResponse {
|
|
data := make([]embedding, 0, len(qwenResponse.Output.Embeddings))
|
|
for _, qwenEmbedding := range qwenResponse.Output.Embeddings {
|
|
data = append(data, embedding{
|
|
Object: "embedding",
|
|
Index: qwenEmbedding.TextIndex,
|
|
Embedding: qwenEmbedding.Embedding,
|
|
})
|
|
}
|
|
return &embeddingsResponse{
|
|
Object: "list",
|
|
Data: data,
|
|
Model: ctx.GetContext(ctxKeyFinalRequestModel).(string),
|
|
Usage: usage{
|
|
PromptTokens: qwenResponse.Usage.TotalTokens,
|
|
TotalTokens: qwenResponse.Usage.TotalTokens,
|
|
},
|
|
}
|
|
}
|
|
|
|
type qwenTextGenRequest struct {
|
|
Model string `json:"model"`
|
|
Input qwenTextGenInput `json:"input"`
|
|
Parameters qwenTextGenParameters `json:"parameters,omitempty"`
|
|
}
|
|
|
|
type qwenTextGenInput struct {
|
|
Messages []qwenMessage `json:"messages"`
|
|
}
|
|
|
|
type qwenTextGenParameters struct {
|
|
ResultFormat string `json:"result_format,omitempty"`
|
|
MaxTokens int `json:"max_tokens,omitempty"`
|
|
RepetitionPenalty float64 `json:"repetition_penalty,omitempty"`
|
|
N int `json:"n,omitempty"`
|
|
Seed int `json:"seed,omitempty"`
|
|
Temperature float64 `json:"temperature,omitempty"`
|
|
TopP float64 `json:"top_p,omitempty"`
|
|
IncrementalOutput bool `json:"incremental_output,omitempty"`
|
|
EnableSearch bool `json:"enable_search,omitempty"`
|
|
Tools []tool `json:"tools,omitempty"`
|
|
}
|
|
|
|
type qwenTextGenResponse struct {
|
|
RequestId string `json:"request_id"`
|
|
Output qwenTextGenOutput `json:"output"`
|
|
Usage qwenUsage `json:"usage"`
|
|
}
|
|
|
|
type qwenTextGenOutput struct {
|
|
FinishReason string `json:"finish_reason"`
|
|
Choices []qwenTextGenChoice `json:"choices"`
|
|
}
|
|
|
|
type qwenTextGenChoice struct {
|
|
FinishReason string `json:"finish_reason"`
|
|
Message qwenMessage `json:"message"`
|
|
}
|
|
|
|
type qwenUsage struct {
|
|
InputTokens int `json:"input_tokens"`
|
|
OutputTokens int `json:"output_tokens"`
|
|
TotalTokens int `json:"total_tokens"`
|
|
}
|
|
|
|
type qwenMessage struct {
|
|
Name string `json:"name,omitempty"`
|
|
Role string `json:"role"`
|
|
Content any `json:"content"`
|
|
ToolCalls []toolCall `json:"tool_calls,omitempty"`
|
|
}
|
|
|
|
type qwenVlMessageContent struct {
|
|
Image string `json:"image,omitempty"`
|
|
Text string `json:"text,omitempty"`
|
|
}
|
|
|
|
type qwenTextEmbeddingRequest struct {
|
|
Model string `json:"model"`
|
|
Input qwenTextEmbeddingInput `json:"input"`
|
|
Parameters qwenTextEmbeddingParameters `json:"parameters,omitempty"`
|
|
}
|
|
|
|
type qwenTextEmbeddingInput struct {
|
|
Texts []string `json:"texts"`
|
|
}
|
|
|
|
type qwenTextEmbeddingParameters struct {
|
|
TextType string `json:"text_type,omitempty"`
|
|
}
|
|
|
|
type qwenTextEmbeddingResponse struct {
|
|
RequestId string `json:"request_id"`
|
|
Output qwenTextEmbeddingOutput `json:"output"`
|
|
Usage qwenUsage `json:"usage"`
|
|
}
|
|
|
|
type qwenTextEmbeddingOutput struct {
|
|
RequestId string `json:"request_id"`
|
|
Embeddings []qwenTextEmbeddings `json:"embeddings"`
|
|
}
|
|
|
|
type qwenTextEmbeddings struct {
|
|
TextIndex int `json:"text_index"`
|
|
Embedding []float64 `json:"embedding"`
|
|
}
|
|
|
|
func qwenMessageToChatMessage(qwenMessage qwenMessage) chatMessage {
|
|
return chatMessage{
|
|
Name: qwenMessage.Name,
|
|
Role: qwenMessage.Role,
|
|
Content: qwenMessage.Content,
|
|
ToolCalls: qwenMessage.ToolCalls,
|
|
}
|
|
}
|
|
|
|
func (m *qwenMessage) IsStringContent() bool {
|
|
_, ok := m.Content.(string)
|
|
return ok
|
|
}
|
|
|
|
func (m *qwenMessage) StringContent() string {
|
|
content, ok := m.Content.(string)
|
|
if ok {
|
|
return content
|
|
}
|
|
contentList, ok := m.Content.([]any)
|
|
if ok {
|
|
var contentStr string
|
|
for _, contentItem := range contentList {
|
|
contentMap, ok := contentItem.(map[string]any)
|
|
if !ok {
|
|
continue
|
|
}
|
|
if text, ok := contentMap["text"].(string); ok {
|
|
contentStr += text
|
|
}
|
|
}
|
|
return contentStr
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func chatMessage2QwenMessage(chatMessage chatMessage) qwenMessage {
|
|
if chatMessage.IsStringContent() {
|
|
return qwenMessage{
|
|
Name: chatMessage.Name,
|
|
Role: chatMessage.Role,
|
|
Content: chatMessage.StringContent(),
|
|
ToolCalls: chatMessage.ToolCalls,
|
|
}
|
|
} else {
|
|
var contents []qwenVlMessageContent
|
|
openaiContent := chatMessage.ParseContent()
|
|
for _, part := range openaiContent {
|
|
var content qwenVlMessageContent
|
|
if part.Type == contentTypeText {
|
|
content.Text = part.Text
|
|
} else if part.Type == contentTypeImageUrl {
|
|
content.Image = part.ImageUrl.Url
|
|
}
|
|
contents = append(contents, content)
|
|
}
|
|
return qwenMessage{
|
|
Name: chatMessage.Name,
|
|
Role: chatMessage.Role,
|
|
Content: contents,
|
|
ToolCalls: chatMessage.ToolCalls,
|
|
}
|
|
}
|
|
}
|