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refactor: use gemini endpoint for fine tuned models in vertex --skip-pipeline #1144

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Merged
Pratham-Mishra04 merged 1 commit into from
Dec 22, 2025
Merged

refactor: use gemini endpoint for fine tuned models in vertex --skip-pipeline #1144

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27 changes: 27 additions & 0 deletions core/providers/vertex/utils.go
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Original file line number Diff line number Diff line change
Expand Up @@ -84,3 +84,30 @@ func getRequestBodyForAnthropicResponses(ctx context.Context, request *schemas.B

return jsonBody, nil
}

// getCompleteURLForGeminiEndpoint constructs the complete URL for the Gemini endpoint, for both streaming and non-streaming requests
// for custom/fine-tuned models, it uses the projectNumber
// for gemini models, it uses the projectID
func getCompleteURLForGeminiEndpoint(deployment string, region string, projectID string, projectNumber string, isStreaming bool) string {
var url string
method := ":generateContent"
if isStreaming {
method = ":streamGenerateContent"
}
if schemas.IsAllDigitsASCII(deployment) {
// Custom/fine-tuned models use projectNumber
if region == "global" {
url = fmt.Sprintf("https://aiplatform.googleapis.com/v1beta1/projects/%s/locations/global/endpoints/%s%s", projectNumber, deployment, method)
} else {
url = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1beta1/projects/%s/locations/%s/endpoints/%s%s", region, projectNumber, region, deployment, method)
}
} else {
// Gemini models use projectID
if region == "global" {
url = fmt.Sprintf("https://aiplatform.googleapis.com/v1/projects/%s/locations/global/publishers/google/models/%s%s", projectID, deployment, method)
} else {
url = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1/projects/%s/locations/%s/publishers/google/models/%s%s", region, projectID, region, deployment, method)
}
}
return url
}
66 changes: 27 additions & 39 deletions core/providers/vertex/vertex.go
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Original file line number Diff line number Diff line change
Expand Up @@ -311,7 +311,7 @@ func (provider *VertexProvider) ChatCompletion(ctx context.Context, key schemas.
if err := sonic.Unmarshal(reqBytes, &requestBody); err != nil {
return nil, fmt.Errorf("failed to unmarshal request body: %w", err)
}
} else if schemas.IsGeminiModel(deployment) {
} else if schemas.IsGeminiModel(deployment) || schemas.IsAllDigitsASCII(deployment) {
reqBody := gemini.ToGeminiChatCompletionRequest(request)
if reqBody == nil {
return nil, fmt.Errorf("chat completion input is not provided")
Expand Down Expand Up @@ -382,9 +382,9 @@ func (provider *VertexProvider) ChatCompletion(ctx context.Context, key schemas.
authQuery = fmt.Sprintf("key=%s", url.QueryEscape(key.Value))
}
if region == "global" {
completeURL = fmt.Sprintf("https://aiplatform.googleapis.com/v1beta1/projects/%s/locations/global/endpoints/%s/chat/completions", projectNumber, deployment)
completeURL = fmt.Sprintf("https://aiplatform.googleapis.com/v1beta1/projects/%s/locations/global/endpoints/%s:generateContent", projectNumber, deployment)
} else {
completeURL = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1beta1/projects/%s/locations/%s/endpoints/%s/chat/completions", region, projectNumber, region, deployment)
completeURL = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1beta1/projects/%s/locations/%s/endpoints/%s:generateContent", region, projectNumber, region, deployment)
}
} else if schemas.IsAnthropicModel(deployment) {
// Claude models use Anthropic publisher
Expand Down Expand Up @@ -502,7 +502,7 @@ func (provider *VertexProvider) ChatCompletion(ctx context.Context, key schemas.
}

return response, nil
} else if schemas.IsGeminiModel(deployment) {
} else if schemas.IsGeminiModel(deployment) || schemas.IsAllDigitsASCII(deployment) {
geminiResponse := gemini.GenerateContentResponse{}

rawRequest, rawResponse, bifrostErr := providerUtils.HandleProviderResponse(resp.Body(), &geminiResponse, jsonBody, providerUtils.ShouldSendBackRawRequest(ctx, provider.sendBackRawRequest), providerUtils.ShouldSendBackRawResponse(ctx, provider.sendBackRawResponse))
Expand Down Expand Up @@ -675,7 +675,7 @@ func (provider *VertexProvider) ChatCompletionStream(ctx context.Context, postHo
RequestType: schemas.ChatCompletionStreamRequest,
},
)
} else if schemas.IsGeminiModel(deployment) {
} else if schemas.IsGeminiModel(deployment) || schemas.IsAllDigitsASCII(deployment) {
// Use Gemini-style streaming for Gemini models
jsonData, bifrostErr := providerUtils.CheckContextAndGetRequestBody(
ctx,
Expand All @@ -701,14 +701,15 @@ func (provider *VertexProvider) ChatCompletionStream(ctx context.Context, postHo
authQuery = fmt.Sprintf("key=%s", url.QueryEscape(key.Value))
}

// Construct the URL for Gemini streaming
var completeURL string
if region == "global" {
completeURL = fmt.Sprintf("https://aiplatform.googleapis.com/v1/projects/%s/locations/global/publishers/google/models/%s:streamGenerateContent", projectID, deployment)
} else {
completeURL = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1/projects/%s/locations/%s/publishers/google/models/%s:streamGenerateContent", region, projectID, region, deployment)
// For custom/fine-tuned models, validate projectNumber is set
projectNumber := key.VertexKeyConfig.ProjectNumber
if schemas.IsAllDigitsASCII(deployment) && projectNumber == "" {
return nil, providerUtils.NewConfigurationError("project number is not set for fine-tuned models", providerName)
}

// Construct the URL for Gemini streaming
completeURL := getCompleteURLForGeminiEndpoint(deployment, region, projectID, projectNumber, true)

// Add alt=sse parameter
if authQuery != "" {
completeURL = fmt.Sprintf("%s?alt=sse&%s", completeURL, authQuery)
Expand Down Expand Up @@ -757,21 +758,7 @@ func (provider *VertexProvider) ChatCompletionStream(ctx context.Context, postHo
authQuery := ""
// Determine the URL based on model type
var completeURL string
if schemas.IsAllDigitsASCII(deployment) {
// Custom Fine-tuned models use OpenAPI endpoint
projectNumber := key.VertexKeyConfig.ProjectNumber
if projectNumber == "" {
return nil, providerUtils.NewConfigurationError("project number is not set for fine-tuned models", providerName)
}
if key.Value != "" {
authQuery = fmt.Sprintf("key=%s", url.QueryEscape(key.Value))
}
if region == "global" {
completeURL = fmt.Sprintf("https://aiplatform.googleapis.com/v1beta1/projects/%s/locations/global/endpoints/%s/chat/completions", projectNumber, deployment)
} else {
completeURL = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1beta1/projects/%s/locations/%s/endpoints/%s/chat/completions", region, projectNumber, region, deployment)
}
} else if schemas.IsMistralModel(deployment) {
if schemas.IsMistralModel(deployment) {
// Mistral models use mistralai publisher with streamRawPredict
if region == "global" {
completeURL = fmt.Sprintf("https://aiplatform.googleapis.com/v1/projects/%s/locations/global/publishers/mistralai/models/%s:streamRawPredict", projectID, deployment)
Expand Down Expand Up @@ -947,7 +934,7 @@ func (provider *VertexProvider) Responses(ctx context.Context, key schemas.Key,
}

return response, nil
} else if schemas.IsGeminiModel(deployment) {
} else if schemas.IsGeminiModel(deployment) || schemas.IsAllDigitsASCII(deployment) {
jsonBody, bifrostErr := providerUtils.CheckContextAndGetRequestBody(
ctx,
request,
Expand Down Expand Up @@ -981,13 +968,14 @@ func (provider *VertexProvider) Responses(ctx context.Context, key schemas.Key,
authQuery = fmt.Sprintf("key=%s", url.QueryEscape(key.Value))
}

var url string
if region == "global" {
url = fmt.Sprintf("https://aiplatform.googleapis.com/v1/projects/%s/locations/global/publishers/google/models/%s:generateContent", projectID, deployment)
} else {
url = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1/projects/%s/locations/%s/publishers/google/models/%s:generateContent", region, projectID, region, deployment)
// For custom/fine-tuned models, validate projectNumber is set
projectNumber := key.VertexKeyConfig.ProjectNumber
if schemas.IsAllDigitsASCII(deployment) && projectNumber == "" {
return nil, providerUtils.NewConfigurationError("project number is not set for fine-tuned models", providerName)
}

url := getCompleteURLForGeminiEndpoint(deployment, region, projectID, projectNumber, false)

// Create HTTP request for streaming
req := fasthttp.AcquireRequest()
resp := fasthttp.AcquireResponse()
Expand Down Expand Up @@ -1169,7 +1157,7 @@ func (provider *VertexProvider) ResponsesStream(ctx context.Context, postHookRun
RequestType: schemas.ResponsesStreamRequest,
},
)
} else if schemas.IsGeminiModel(deployment) {
} else if schemas.IsGeminiModel(deployment) || schemas.IsAllDigitsASCII(deployment) {
region := key.VertexKeyConfig.Region
if region == "" {
return nil, providerUtils.NewConfigurationError("region is not set in key config", providerName)
Expand Down Expand Up @@ -1205,14 +1193,14 @@ func (provider *VertexProvider) ResponsesStream(ctx context.Context, postHookRun
authQuery = fmt.Sprintf("key=%s", url.QueryEscape(key.Value))
}

// Construct the URL for Gemini streaming
var completeURL string
if region == "global" {
completeURL = fmt.Sprintf("https://aiplatform.googleapis.com/v1/projects/%s/locations/global/publishers/google/models/%s:streamGenerateContent", projectID, deployment)
} else {
completeURL = fmt.Sprintf("https://%s-aiplatform.googleapis.com/v1/projects/%s/locations/%s/publishers/google/models/%s:streamGenerateContent", region, projectID, region, deployment)
// For custom/fine-tuned models, validate projectNumber is set
projectNumber := key.VertexKeyConfig.ProjectNumber
if schemas.IsAllDigitsASCII(deployment) && projectNumber == "" {
return nil, providerUtils.NewConfigurationError("project number is not set for fine-tuned models", providerName)
}

// Construct the URL for Gemini streaming
completeURL := getCompleteURLForGeminiEndpoint(deployment, region, projectID, projectNumber, true)
// Add alt=sse parameter
if authQuery != "" {
completeURL = fmt.Sprintf("%s?alt=sse&%s", completeURL, authQuery)
Expand Down