first commit

core/providers/anthropic/errors.go

@@ -0,0 +1,68 @@
+package anthropic
+
+import (
+	"fmt"
+
+	providerUtils "github.com/maximhq/bifrost/core/providers/utils"
+	schemas "github.com/maximhq/bifrost/core/schemas"
+	"github.com/valyala/fasthttp"
+)
+
+// ToAnthropicChatCompletionError converts a BifrostError to AnthropicMessageError
+func ToAnthropicChatCompletionError(bifrostErr *schemas.BifrostError) *AnthropicMessageError {
+	if bifrostErr == nil {
+		return nil
+	}
+
+	// Safely extract type and message from nested error
+	errorType := "api_error"
+	message := ""
+	if bifrostErr.Error != nil {
+		if bifrostErr.Error.Type != nil && *bifrostErr.Error.Type != "" {
+			errorType = *bifrostErr.Error.Type
+		}
+		message = bifrostErr.Error.Message
+	}
+
+	// Handle nested error fields with nil checks
+	errorStruct := AnthropicMessageErrorStruct{
+		Type:    errorType,
+		Message: message,
+	}
+
+	return &AnthropicMessageError{
+		Type:  "error", // always "error" for Anthropic
+		Error: errorStruct,
+	}
+}
+
+// ToAnthropicResponsesStreamError converts a BifrostError to Anthropic responses streaming error in SSE format
+func ToAnthropicResponsesStreamError(bifrostErr *schemas.BifrostError) string {
+	if bifrostErr == nil {
+		return ""
+	}
+
+	anthropicErr := ToAnthropicChatCompletionError(bifrostErr)
+
+	// Marshal to JSON
+	jsonData, err := providerUtils.MarshalSorted(anthropicErr)
+	if err != nil {
+		return ""
+	}
+
+	// Format as Anthropic SSE error event
+	return fmt.Sprintf("event: error\ndata: %s\n\n", jsonData)
+}
+
+func parseAnthropicError(resp *fasthttp.Response) *schemas.BifrostError {
+	var errorResp AnthropicError
+	bifrostErr := providerUtils.HandleProviderAPIError(resp, &errorResp)
+	if errorResp.Error != nil {
+		if bifrostErr.Error == nil {
+			bifrostErr.Error = &schemas.ErrorField{}
+		}
+		bifrostErr.Error.Type = &errorResp.Error.Type
+		bifrostErr.Error.Message = errorResp.Error.Message
+	}
+	return bifrostErr
+}