mirror of
https://github.com/alibaba/higress.git
synced 2026-03-06 17:40:51 +08:00
119 lines
3.9 KiB
Go
119 lines
3.9 KiB
Go
package provider
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import (
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"errors"
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"net/http"
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"strings"
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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/log"
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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/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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const (
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doubaoDomain = "ark.cn-beijing.volces.com"
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doubaoChatCompletionPath = "/api/v3/chat/completions"
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doubaoEmbeddingsPath = "/api/v3/embeddings"
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doubaoImageGenerationPath = "/api/v3/images/generations"
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doubaoResponsesPath = "/api/v3/responses"
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)
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type doubaoProviderInitializer struct{}
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func (m *doubaoProviderInitializer) ValidateConfig(config *ProviderConfig) error {
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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 *doubaoProviderInitializer) DefaultCapabilities() map[string]string {
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return map[string]string{
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string(ApiNameChatCompletion): doubaoChatCompletionPath,
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string(ApiNameEmbeddings): doubaoEmbeddingsPath,
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string(ApiNameImageGeneration): doubaoImageGenerationPath,
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string(ApiNameResponses): doubaoResponsesPath,
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}
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}
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func (m *doubaoProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
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config.setDefaultCapabilities(m.DefaultCapabilities())
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return &doubaoProvider{
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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 doubaoProvider struct {
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config ProviderConfig
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contextCache *contextCache
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}
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func (m *doubaoProvider) GetProviderType() string {
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return providerTypeDoubao
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}
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func (m *doubaoProvider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName) error {
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m.config.handleRequestHeaders(m, ctx, apiName)
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return nil
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}
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func (m *doubaoProvider) OnRequestBody(ctx wrapper.HttpContext, apiName ApiName, body []byte) (types.Action, error) {
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if !m.config.isSupportedAPI(apiName) {
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return types.ActionContinue, errUnsupportedApiName
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}
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return m.config.handleRequestBody(m, m.contextCache, ctx, apiName, body)
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}
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func (m *doubaoProvider) TransformRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, headers http.Header) {
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util.OverwriteRequestPathHeaderByCapability(headers, string(apiName), m.config.capabilities)
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util.OverwriteRequestHostHeader(headers, doubaoDomain)
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util.OverwriteRequestAuthorizationHeader(headers, "Bearer "+m.config.GetApiTokenInUse(ctx))
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headers.Del("Content-Length")
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}
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func (m *doubaoProvider) TransformRequestBody(ctx wrapper.HttpContext, apiName ApiName, body []byte) ([]byte, error) {
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var err error
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switch apiName {
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case ApiNameResponses:
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// 移除火山 responses 接口暂时不支持的参数
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// 参考: https://www.volcengine.com/docs/82379/1569618
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// TODO: 这里应该用 DTO 处理
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for _, param := range []string{"parallel_tool_calls", "tool_choice", "stream_options"} {
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body, err = sjson.DeleteBytes(body, param)
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if err != nil {
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log.Warnf("[doubao] failed to delete %s in request body, err: %v", param, err)
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}
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}
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case ApiNameImageGeneration:
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// 火山生图接口默认会带上水印,但 OpenAI 接口不支持此参数
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// 参考: https://www.volcengine.com/docs/82379/1541523
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if res := gjson.GetBytes(body, "watermark"); !res.Exists() {
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body, err = sjson.SetBytes(body, "watermark", false)
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if err != nil {
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log.Warnf("[doubao] failed to set watermark in request body, err: %v", err)
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}
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}
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}
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return m.config.defaultTransformRequestBody(ctx, apiName, body)
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}
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func (m *doubaoProvider) GetApiName(path string) ApiName {
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if strings.Contains(path, doubaoChatCompletionPath) {
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return ApiNameChatCompletion
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}
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if strings.Contains(path, doubaoEmbeddingsPath) {
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return ApiNameEmbeddings
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}
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if strings.Contains(path, doubaoImageGenerationPath) {
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return ApiNameImageGeneration
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}
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if strings.Contains(path, doubaoResponsesPath) {
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return ApiNameResponses
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}
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return ""
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}
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