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Add Responses-to-Anthropic Moon Bridge port #285

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37f252d
Add Responses-to-Anthropic bridge
Uchiha007 May 19, 2026
28c3662
fix: harden responses anthropic bridge
Uchiha007 May 28, 2026
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219 changes: 212 additions & 7 deletions crates/service/src/gateway/observability/http_bridge/delivery.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,14 +9,14 @@ use crate::gateway::upstream::GatewayStreamResponse;

use super::super::{GeminiStreamOutputMode, ResponseAdapter, ToolNameRestoreMap};
use super::{
build_images_api_response, collect_image_generation_chat_images,
append_output_text, build_images_api_response, collect_image_generation_chat_images,
collect_non_stream_json_from_sse_bytes, collect_response_reasoning_summary_text,
extract_error_hint_from_body, extract_error_message_from_json, looks_like_sse_payload,
merge_usage, parse_usage_from_json, push_trace_id_header, usage_has_signal, AnthropicSseReader,
ChatCompletionsFromResponsesSseReader, GeminiSseReader, ImagesFromResponsesSseReader,
ImagesResponseFormat, OpenAIResponsesPassthroughSseReader, PassthroughSseCollector,
PassthroughSseProtocol, PassthroughSseUsageReader, SseKeepAliveFrame,
UpstreamResponseBridgeResult, UpstreamResponseUsage,
PassthroughSseProtocol, PassthroughSseUsageReader, ResponsesFromAnthropicSseReader,
SseKeepAliveFrame, UpstreamResponseBridgeResult, UpstreamResponseUsage,
};

const REQUEST_ID_HEADER_CANDIDATES: &[&str] = &["x-request-id", "x-oai-request-id"];
Expand Down Expand Up @@ -153,6 +153,14 @@ where
)
}

#[cfg(test)]
fn response_adapter_uses_manual_chunked_streaming(response_adapter: ResponseAdapter) -> bool {
matches!(
response_adapter,
ResponseAdapter::ResponsesFromAnthropicMessages
)
}

/// 函数 `compact_debug_suffix`
///
/// 作者: gaohongshun
Expand Down Expand Up @@ -342,6 +350,33 @@ fn anthropic_usage_from_responses(value: &Value) -> Value {
Value::Object(obj)
}

fn responses_usage_from_anthropic(value: &Value) -> Value {
let usage = value.get("usage").cloned().unwrap_or(Value::Null);
let input_tokens = usage
.get("input_tokens")
.and_then(Value::as_i64)
.unwrap_or_default();
let output_tokens = usage
.get("output_tokens")
.and_then(Value::as_i64)
.unwrap_or_default();
let cached_tokens = usage
.get("cache_read_input_tokens")
.and_then(Value::as_i64)
.unwrap_or_default();
let reasoning_tokens = usage
.get("reasoning_output_tokens")
.and_then(Value::as_i64)
.unwrap_or_default();
json!({
"input_tokens": input_tokens,
"output_tokens": output_tokens,
"total_tokens": input_tokens + output_tokens,
"input_tokens_details": { "cached_tokens": cached_tokens },
"output_tokens_details": { "reasoning_tokens": reasoning_tokens },
})
}

fn gemini_usage_from_responses(value: &Value) -> Value {
let usage = value.get("usage").cloned().unwrap_or(Value::Null);
let prompt = usage
Expand Down Expand Up @@ -496,6 +531,77 @@ fn convert_responses_body_to_anthropic_messages(
serde_json::to_vec(&payload).ok()
}

fn convert_anthropic_messages_body_to_responses(body: &[u8]) -> Option<Vec<u8>> {
let value = serde_json::from_slice::<Value>(body).ok()?;
let response_id = value
.get("id")
.and_then(Value::as_str)
.unwrap_or("resp_codexmanager");
let model = value.get("model").and_then(Value::as_str).unwrap_or("");
let mut output = Vec::new();
let mut output_text = String::new();
if let Some(content) = value.get("content").and_then(Value::as_array) {
for item in content {
let Some(obj) = item.as_object() else {
continue;
};
match obj.get("type").and_then(Value::as_str).unwrap_or_default() {
"text" => {
if let Some(text) = obj.get("text").and_then(Value::as_str) {
append_output_text(&mut output_text, text);
}
}
"tool_use" => {
output.push(json!({
"id": obj
.get("id")
.and_then(Value::as_str)
.unwrap_or("toolu_unknown"),
"type": "function_call",
"status": "completed",
"call_id": obj
.get("id")
.and_then(Value::as_str)
.unwrap_or("toolu_unknown"),
"name": obj
.get("name")
.and_then(Value::as_str)
.unwrap_or("tool"),
"arguments": obj
.get("input")
.cloned()
.unwrap_or_else(|| json!({}))
.to_string(),
}));
}
_ => {}
}
}
}
if !output_text.is_empty() {
output.insert(
0,
json!({
"id": format!("msg_{response_id}"),
"type": "message",
"status": "completed",
"role": "assistant",
"content": [{ "type": "output_text", "text": output_text }],
}),
);
}
let payload = json!({
"id": response_id,
"object": "response",
"created_at": 0,
"status": "completed",
"model": model,
"output": output,
"usage": responses_usage_from_anthropic(&value),
});
serde_json::to_vec(&payload).ok()
}

fn convert_responses_body_to_gemini_generate_content(
body: &[u8],
wrap_response_envelope: bool,
Expand Down Expand Up @@ -753,6 +859,9 @@ fn convert_success_body_for_adapter(
ResponseAdapter::AnthropicMessagesFromResponses => {
convert_responses_body_to_anthropic_messages(body, tool_name_restore_map)
}
ResponseAdapter::ResponsesFromAnthropicMessages => {
convert_anthropic_messages_body_to_responses(body)
}
ResponseAdapter::ChatCompletionsFromResponses => {
convert_responses_body_to_chat_completions(body)
}
Expand Down Expand Up @@ -1040,7 +1149,8 @@ fn convert_error_body_for_adapter(response_adapter: ResponseAdapter, message: &s
ResponseAdapter::AnthropicMessagesFromResponses => {
convert_upstream_error_to_anthropic_body(message)
}
ResponseAdapter::ChatCompletionsFromResponses => serde_json::to_vec(&json!({
ResponseAdapter::ResponsesFromAnthropicMessages
| ResponseAdapter::ChatCompletionsFromResponses => serde_json::to_vec(&json!({
"error": {
"message": message,
"type": "upstream_error",
Expand Down Expand Up @@ -1080,7 +1190,8 @@ fn compatibility_stream_content_type(
) -> &'static str {
match response_adapter {
ResponseAdapter::AnthropicMessagesFromResponses => "text/event-stream",
ResponseAdapter::ChatCompletionsFromResponses => "text/event-stream",
ResponseAdapter::ResponsesFromAnthropicMessages
| ResponseAdapter::ChatCompletionsFromResponses => "text/event-stream",
ResponseAdapter::CompactFromChatCompletions => "application/json",
ResponseAdapter::ImagesB64JsonFromResponses | ResponseAdapter::ImagesUrlFromResponses => {
"text/event-stream"
Expand Down Expand Up @@ -2174,6 +2285,46 @@ pub(crate) fn respond_with_upstream(
None,
));
}
ResponseAdapter::ResponsesFromAnthropicMessages => {
let usage_collector = Arc::new(Mutex::new(UpstreamResponseUsage::default()));
let response_body: Box<dyn std::io::Read + Send> =
Box::new(ResponsesFromAnthropicSseReader::new(
upstream,
Arc::clone(&usage_collector),
fallback_model,
request_started_at,
));
let delivery_error =
respond_streaming_chunked(request, status, headers, response_body)
.err()
.map(|err| err.to_string());
let usage = usage_collector
.lock()
.map(|guard| guard.clone())
.unwrap_or_default();
return Ok(with_bridge_debug_meta(
UpstreamResponseBridgeResult {
usage,
stream_terminal_seen: true,
stream_terminal_error: None,
delivery_error,
upstream_error_hint: None,
delivered_status_code: None,
upstream_request_id: None,
upstream_cf_ray: None,
upstream_auth_error: None,
upstream_identity_error_code: None,
upstream_content_type: None,
last_sse_event_type: None,
},
&upstream_request_id,
&upstream_cf_ray,
&upstream_auth_error,
&upstream_identity_error_code,
&upstream_content_type,
None,
));
}
ResponseAdapter::ChatCompletionsFromResponses => {
let usage_collector = Arc::new(Mutex::new(PassthroughSseCollector::default()));
let response_body: Box<dyn std::io::Read + Send> =
Expand Down Expand Up @@ -2900,6 +3051,7 @@ pub(crate) fn respond_with_upstream(
))
}
ResponseAdapter::AnthropicMessagesFromResponses
| ResponseAdapter::ResponsesFromAnthropicMessages
| ResponseAdapter::ChatCompletionsFromResponses
| ResponseAdapter::ImagesB64JsonFromResponses
| ResponseAdapter::ImagesUrlFromResponses
Expand Down Expand Up @@ -3151,6 +3303,49 @@ pub(crate) fn respond_with_stream_upstream(
None,
));
}
ResponseAdapter::ResponsesFromAnthropicMessages => {
let upstream_body = upstream
.read_all_bytes()
.map_err(|err| format!("read upstream body failed: {err}"))?;
let usage_collector = Arc::new(Mutex::new(UpstreamResponseUsage::default()));
let response_body: Box<dyn std::io::Read + Send> =
Box::new(ResponsesFromAnthropicSseReader::from_reader(
std::io::Cursor::new(upstream_body.to_vec()),
Arc::clone(&usage_collector),
fallback_model,
request_started_at,
));
let delivery_error =
respond_streaming_chunked(request, status, headers, response_body)
.err()
.map(|err| err.to_string());
let usage = usage_collector
.lock()
.map(|guard| guard.clone())
.unwrap_or_default();
return Ok(with_bridge_debug_meta(
UpstreamResponseBridgeResult {
usage,
stream_terminal_seen: true,
stream_terminal_error: None,
delivery_error,
upstream_error_hint: None,
delivered_status_code: None,
upstream_request_id: None,
upstream_cf_ray: None,
upstream_auth_error: None,
upstream_identity_error_code: None,
upstream_content_type: None,
last_sse_event_type: None,
},
&upstream_request_id,
&upstream_cf_ray,
&upstream_auth_error,
&upstream_identity_error_code,
&upstream_content_type,
None,
));
}
ResponseAdapter::ChatCompletionsFromResponses => {
let upstream_body = upstream
.read_all_bytes()
Expand Down Expand Up @@ -3846,6 +4041,7 @@ pub(crate) fn respond_with_stream_upstream(
))
}
ResponseAdapter::AnthropicMessagesFromResponses
| ResponseAdapter::ResponsesFromAnthropicMessages
| ResponseAdapter::ChatCompletionsFromResponses
| ResponseAdapter::ImagesB64JsonFromResponses
| ResponseAdapter::ImagesUrlFromResponses
Expand Down Expand Up @@ -3881,6 +4077,7 @@ fn resolve_stream_keepalive_frame(
}
}
ResponseAdapter::AnthropicMessagesFromResponses
| ResponseAdapter::ResponsesFromAnthropicMessages
| ResponseAdapter::ChatCompletionsFromResponses
| ResponseAdapter::CompactFromChatCompletions
| ResponseAdapter::ImagesB64JsonFromResponses
Expand All @@ -3901,8 +4098,9 @@ mod tests {
convert_responses_body_to_chat_completions,
convert_responses_body_to_gemini_generate_content, convert_responses_body_to_images,
force_openai_responses_stream_content_type, gemini_cli_wrap_response_envelope,
merge_usage_from_body_without_output_text, write_streaming_chunked_response, HTTPVersion,
Header, ImagesResponseFormat, ResponseAdapter, StatusCode,
merge_usage_from_body_without_output_text, response_adapter_uses_manual_chunked_streaming,
write_streaming_chunked_response, HTTPVersion, Header, ImagesResponseFormat,
ResponseAdapter, StatusCode,
};
use serde_json::json;
use std::io::{Read, Write};
Expand Down Expand Up @@ -3979,6 +4177,13 @@ mod tests {
assert!(writer.flushes >= 4);
}

#[test]
fn responses_from_anthropic_streaming_uses_manual_chunked_delivery() {
assert!(response_adapter_uses_manual_chunked_streaming(
ResponseAdapter::ResponsesFromAnthropicMessages
));
}

/// 函数 `compact_header_only_identity_error_is_normalized_and_classified`
///
/// 作者: gaohongshun
Expand Down
2 changes: 1 addition & 1 deletion crates/service/src/gateway/observability/http_bridge/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -412,7 +412,7 @@ pub(super) fn respond_with_upstream(
pub(super) use stream_readers::{
ChatCompletionsFromResponsesSseReader, ImagesFromResponsesSseReader,
OpenAIResponsesPassthroughSseReader, PassthroughSseCollector, PassthroughSseUsageReader,
SseKeepAliveFrame,
ResponsesFromAnthropicSseReader, SseKeepAliveFrame,
};

pub(super) use stream_readers::{AnthropicSseReader, GeminiSseReader};
Expand Down
3 changes: 3 additions & 0 deletions crates/service/src/gateway/observability/http_bridge/stream_readers.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,8 @@ mod images;
mod openai_responses;
#[path = "stream_readers/passthrough.rs"]
mod passthrough;
#[path = "stream_readers/responses_from_anthropic.rs"]
mod responses_from_anthropic;

pub(crate) use anthropic::AnthropicSseReader;
pub(crate) use chat_completions::ChatCompletionsFromResponsesSseReader;
Expand All @@ -43,6 +45,7 @@ pub(crate) use gemini::GeminiSseReader;
pub(crate) use images::ImagesFromResponsesSseReader;
pub(crate) use openai_responses::OpenAIResponsesPassthroughSseReader;
pub(crate) use passthrough::PassthroughSseUsageReader;
pub(crate) use responses_from_anthropic::ResponsesFromAnthropicSseReader;

/// 函数 `reload_from_env`
///
Expand Down
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