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75 lines
2.4 KiB
Go
75 lines
2.4 KiB
Go
package provider
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import (
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"errors"
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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/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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)
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// ai360Provider is the provider for 360 OpenAI service.
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const (
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ai360Domain = "api.360.cn"
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)
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type ai360ProviderInitializer struct {
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}
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type ai360Provider struct {
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config ProviderConfig
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contextCache *contextCache
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}
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func (m *ai360ProviderInitializer) 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 *ai360ProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
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return &ai360Provider{
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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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func (m *ai360Provider) GetProviderType() string {
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return providerTypeAi360
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}
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func (m *ai360Provider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, log wrapper.Log) (types.Action, error) {
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if apiName != ApiNameChatCompletion {
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return types.ActionContinue, errUnsupportedApiName
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}
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_ = util.OverwriteRequestHost(ai360Domain)
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_ = proxywasm.RemoveHttpRequestHeader("Accept-Encoding")
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_ = proxywasm.RemoveHttpRequestHeader("Content-Length")
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_ = proxywasm.ReplaceHttpRequestHeader("Authorization", m.config.GetRandomToken())
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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 *ai360Provider) OnRequestBody(ctx wrapper.HttpContext, apiName ApiName, body []byte, log wrapper.Log) (types.Action, error) {
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if apiName != ApiNameChatCompletion {
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return types.ActionContinue, errUnsupportedApiName
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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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if request.Model == "" {
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return types.ActionContinue, errors.New("missing model in chat completion request")
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}
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// 映射模型
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mappedModel := getMappedModel(request.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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ctx.SetContext(ctxKeyFinalRequestModel, mappedModel)
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request.Model = mappedModel
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return types.ActionContinue, replaceJsonRequestBody(request, log)
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}
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