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feat: Always buffer request body in ai-proxy plugin (#1155)

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This commit is contained in:
Kent Dong
2024-07-25 19:35:39 +08:00
committed by GitHub
parent 10569f49ae
commit b6d07a157c
11 changed files with 30 additions and 72 deletions
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34
plugins/wasm-go/extensions/ai-proxy/provider/openai.go
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@@ -41,24 +41,16 @@ func (m *openaiProvider) GetProviderType() string {
}
func (m *openaiProvider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName, log wrapper.Log) (types.Action, error) {
skipRequestBody := true
switch apiName {
case ApiNameChatCompletion:
_ = util.OverwriteRequestPath(openaiChatCompletionPath)
skipRequestBody = m.contextCache == nil
break
case ApiNameEmbeddings:
_ = util.OverwriteRequestPath(openaiEmbeddingsPath)
break
}
_ = util.OverwriteRequestAuthorization("Bearer " + m.config.GetRandomToken())
if skipRequestBody {
ctx.DontReadRequestBody()
} else {
_ = proxywasm.RemoveHttpRequestHeader("Content-Length")
}
_ = proxywasm.RemoveHttpRequestHeader("Content-Length")
return types.ActionContinue, nil
}
@@ -67,13 +59,31 @@ func (m *openaiProvider) OnRequestBody(ctx wrapper.HttpContext, apiName ApiName,
// We don't need to process the request body for other APIs.
return types.ActionContinue, nil
}
if m.contextCache == nil {
return types.ActionContinue, nil
}
request := &chatCompletionRequest{}
if err := decodeChatCompletionRequest(body, request); err != nil {
return types.ActionContinue, err
}
bodyAltered := false
if request.Stream {
// For stream requests, we need to include usage in the response.
if request.StreamOptions == nil {
request.StreamOptions = &streamOptions{IncludeUsage: true}
bodyAltered = true
} else if !request.StreamOptions.IncludeUsage {
request.StreamOptions.IncludeUsage = true
bodyAltered = true
}
}
if m.contextCache == nil {
if bodyAltered {
if err := replaceJsonRequestBody(request, log); err != nil {
_ = util.SendResponse(500, "ai-proxy.openai.set_include_usage_failed", util.MimeTypeTextPlain, fmt.Sprintf("failed to replace request body: %v", err))
}
}
return types.ActionContinue, nil
} else {
// If context cache is configured and body has been altered, the new body will be replaced when inserting the context data.
}
err := m.contextCache.GetContent(func(content string, err error) {
defer func() {
_ = proxywasm.ResumeHttpRequest()