Merge pull request #813 from AAEE86/fix-deepseek-reasoning-replay

fix(deepseek): 仅对官方地址启用思考兼容并保留历史内容
This commit is contained in:
fawney19
2026-09-11 10:59:52 +08:00
committed by GitHub
@@ -1,39 +1,19 @@
use serde_json::{json, Value};
pub(crate) fn is_deepseek_provider(provider_type: &str, base_url: &str) -> bool {
let provider_type = provider_type.trim().to_ascii_lowercase();
if matches!(
provider_type.as_str(),
"deepseek" | "deepseek_openai" | "deepseek_anthropic" | "deepseek_compatible"
) {
return true;
}
pub(crate) fn is_deepseek_provider(_provider_type: &str, base_url: &str) -> bool {
let Some(host) = base_url_host(base_url) else {
return false;
};
host == "deepseek.com" || host.ends_with(".deepseek.com")
}
fn is_deepseek_model(provider_model: &str) -> bool {
let provider_model = provider_model.trim().to_ascii_lowercase();
let leaf = provider_model
.rsplit(['/', ':'])
.next()
.unwrap_or(provider_model.as_str());
leaf == "deepseek" || leaf.starts_with("deepseek-") || leaf.starts_with("deepseek_")
}
fn is_deepseek_upstream(provider_type: &str, base_url: &str, provider_model: &str) -> bool {
is_deepseek_provider(provider_type, base_url) || is_deepseek_model(provider_model)
// 仅官方接口启用专用兼容;供应商类型和模型名称不能代表第三方接口的行为。
host == "api.deepseek.com"
}
pub(crate) fn openai_responses_reasoning_replay_policy(
provider_type: &str,
base_url: &str,
provider_model: &str,
_provider_model: &str,
) -> crate::ai_serving::OpenAiResponsesReasoningReplayPolicy {
if is_deepseek_upstream(provider_type, base_url, provider_model) {
if is_deepseek_provider(provider_type, base_url) {
crate::ai_serving::OpenAiResponsesReasoningReplayPolicy::DeepSeekOpaque
} else {
crate::ai_serving::OpenAiResponsesReasoningReplayPolicy::OpenAiItemIds
@@ -47,11 +27,7 @@ pub(crate) fn apply_deepseek_tool_call_thinking_compat(
provider_api_format: &str,
original_request_body: Option<&Value>,
) {
let provider_model = provider_request_body
.get("model")
.and_then(Value::as_str)
.unwrap_or_default();
if !is_deepseek_upstream(provider_type, base_url, provider_model) {
if !is_deepseek_provider(provider_type, base_url) {
return;
}
@@ -155,6 +131,9 @@ fn apply_deepseek_openai_chat_thinking_compat(
provider_request_body: &mut Value,
original_request_body: Option<&Value>,
) {
// 携带 tools 时,所有历史 reasoning_content 都须完整回传,包括未调用工具的轮次。
// 无 tools 时允许回传,且 prefix 续写需要保留输入;因此原样保留 messages,
// 不删除思考内容,也不以空字符串冒充缺失内容,由上游校验请求是否完整。
let disabled = source_disables_thinking(original_request_body, provider_request_body);
set_deepseek_thinking_type(
provider_request_body,
@@ -170,33 +149,6 @@ fn apply_deepseek_openai_chat_thinking_compat(
{
object.remove("reasoning_effort");
}
return;
}
let Some(messages) = object.get_mut("messages").and_then(Value::as_array_mut) else {
return;
};
for message in messages {
let Some(message_object) = message.as_object_mut() else {
continue;
};
let is_assistant = message_object
.get("role")
.and_then(Value::as_str)
.is_some_and(|role| role.trim().eq_ignore_ascii_case("assistant"));
if !is_assistant {
continue;
}
if message_object
.get("reasoning_content")
.is_some_and(|value| !value.is_null())
{
continue;
}
message_object.insert(
"reasoning_content".to_string(),
Value::String(String::new()),
);
}
}
@@ -287,8 +239,8 @@ mod tests {
};
#[test]
fn detects_deepseek_provider_by_type_or_host() {
assert!(is_deepseek_provider(
fn detects_deepseek_provider_only_by_official_host() {
assert!(!is_deepseek_provider(
"deepseek",
"https://relay.example.com"
));
@@ -298,6 +250,16 @@ mod tests {
));
assert!(is_deepseek_provider("custom", "api.deepseek.com/v1"));
assert!(is_deepseek_provider("custom", "api.deepseek.com:443/v1"));
assert!(!is_deepseek_provider("custom", "https://deepseek.com"));
assert!(!is_deepseek_provider("custom", "deepseek.com/v1"));
assert!(is_deepseek_provider(
"custom",
" HTTPS://API.DEEPSEEK.COM:443/beta "
));
assert!(!is_deepseek_provider(
"deepseek",
"https://other.deepseek.com/v1"
));
assert!(!is_deepseek_provider(
"custom",
"https://example.com/deepseek"
@@ -319,6 +281,15 @@ mod tests {
"https://evil.example/?relay=@api.deepseek.com"
));
assert!(!is_deepseek_provider("custom", "ftp://api.deepseek.com/v1"));
assert!(!is_deepseek_provider("deepseek", ""));
assert_eq!(
openai_responses_reasoning_replay_policy(
"deepseek",
"https://deepseek.com/v1",
"deepseek-chat",
),
crate::ai_serving::OpenAiResponsesReasoningReplayPolicy::OpenAiItemIds
);
assert_eq!(
openai_responses_reasoning_replay_policy(
"custom",
@@ -341,7 +312,7 @@ mod tests {
"https://api.b.ai/v1",
"deepseek-v4-flash",
),
crate::ai_serving::OpenAiResponsesReasoningReplayPolicy::DeepSeekOpaque
crate::ai_serving::OpenAiResponsesReasoningReplayPolicy::OpenAiItemIds
);
assert_eq!(
openai_responses_reasoning_replay_policy(
@@ -353,6 +324,33 @@ mod tests {
);
}
#[test]
fn official_deepseek_host_enables_compat_without_type_or_model_hints() {
for base_url in [
"https://api.deepseek.com/v1",
"https://api.deepseek.com/beta",
] {
let mut body = json!({
"model": "mapped-model",
"messages": [{"role": "assistant", "content": "answer"}]
});
apply_deepseek_tool_call_thinking_compat(
&mut body,
"custom",
base_url,
"openai:chat",
None,
);
assert_eq!(body["thinking"]["type"], "enabled");
assert_eq!(
openai_responses_reasoning_replay_policy("custom", base_url, "mapped-model"),
crate::ai_serving::OpenAiResponsesReasoningReplayPolicy::DeepSeekOpaque
);
}
}
#[test]
fn custom_deepseek_host_preserves_production_shaped_opaque_reasoning_replay() {
let reasoning_items = (0..66)
@@ -444,7 +442,7 @@ mod tests {
}
#[test]
fn openai_chat_deepseek_adds_thinking_and_empty_reasoning_content() {
fn openai_chat_deepseek_enables_thinking_without_fabricating_reasoning() {
let mut body = json!({
"model": "deepseek-chat",
"messages": [
@@ -467,11 +465,11 @@ mod tests {
);
assert_eq!(body["thinking"]["type"], "enabled");
assert_eq!(body["messages"][1]["reasoning_content"], "");
assert!(body["messages"][1].get("reasoning_content").is_none());
}
#[test]
fn custom_relay_deepseek_model_adds_chat_thinking_compat() {
fn custom_relay_deepseek_model_preserves_chat_request() {
let mut body = json!({
"model": "deepseek-v4-flash",
"messages": [
@@ -484,6 +482,7 @@ mod tests {
{"role": "tool", "tool_call_id": "call_1", "content": "done"}
]
});
let original = body.clone();
apply_deepseek_tool_call_thinking_compat(
&mut body,
@@ -493,8 +492,211 @@ mod tests {
None,
);
assert_eq!(body, original);
}
#[test]
fn third_party_hosts_ignore_deepseek_type_and_model_hints() {
for provider_type in [
"custom",
"deepseek",
"deepseek_openai",
"deepseek_anthropic",
"deepseek_compatible",
] {
for provider_model in [
"other-model",
"deepseek-chat",
"deepseek-reasoner",
"deepseek-v3",
"deepseek-v4-flash",
"vendor/deepseek-chat",
"vendor:deepseek-reasoner",
] {
let base_url = "https://relay.example.com/v1";
assert!(!is_deepseek_provider(provider_type, base_url));
assert_eq!(
openai_responses_reasoning_replay_policy(
provider_type,
base_url,
provider_model
),
crate::ai_serving::OpenAiResponsesReasoningReplayPolicy::OpenAiItemIds
);
for api_format in ["openai:chat", "claude:messages"] {
let original = json!({
"model": provider_model,
"messages": [{
"role": "assistant",
"content": "answer",
"reasoning_content": "original plan"
}]
});
let mut body = original.clone();
apply_deepseek_tool_call_thinking_compat(
&mut body,
provider_type,
base_url,
api_format,
None,
);
assert_eq!(
body, original,
"{provider_type} / {provider_model} / {api_format}"
);
}
}
}
}
#[test]
fn openai_chat_deepseek_preserves_history_without_tools() {
let mut body = json!({
"model": "deepseek-chat",
"messages": [
{"role": "user", "content": "Compare 9.11 and 9.8"},
{
"role": "assistant",
"content": "9.8 is greater",
"reasoning_content": "Compare the decimal places.\n9.80 > 9.11."
},
{"role": "user", "content": "Explain again"},
{"role": "assistant", "content": "Compare 9.80 with 9.11"}
]
});
let messages = body["messages"].clone();
apply_deepseek_tool_call_thinking_compat(
&mut body,
"deepseek",
"https://api.deepseek.com/v1",
"openai:chat",
None,
);
assert_eq!(body["messages"], messages);
}
#[test]
fn openai_chat_deepseek_preserves_reasoning_across_all_tool_turns() {
let mut body = json!({
"model": "deepseek-chat",
"tools": [{
"type": "function",
"function": {
"name": "get_weather",
"parameters": {"type": "object", "properties": {}}
}
}],
"messages": [
{"role": "user", "content": "What is the weather?"},
{
"role": "assistant",
"content": null,
"reasoning_content": "Check the weather before answering.\nKeep this full plan.",
"tool_calls": [{
"id": "call_1",
"type": "function",
"function": {"name": "get_weather", "arguments": "{}"}
}]
},
{"role": "tool", "tool_call_id": "call_1", "content": "Cloudy"},
{
"role": "assistant",
"content": "It is cloudy",
"reasoning_content": "The weather result is available; summarize it."
},
{"role": "user", "content": "Should I take an umbrella?"},
{
"role": "assistant",
"content": "An umbrella may be useful",
"reasoning_content": "Use the previous weather result without another tool call."
},
{"role": "user", "content": "Why?"}
]
});
let messages = body["messages"].clone();
let tools = body["tools"].clone();
apply_deepseek_tool_call_thinking_compat(
&mut body,
"deepseek",
"https://api.deepseek.com/v1",
"openai:chat",
None,
);
assert_eq!(body["messages"], messages);
assert_eq!(body["tools"], tools);
assert_eq!(body["thinking"]["type"], "enabled");
}
#[test]
fn openai_chat_deepseek_does_not_fabricate_missing_tool_reasoning() {
for tools in [
json!([]),
json!([{
"type": "function",
"function": {
"name": "lookup",
"parameters": {"type": "object", "properties": {}}
}
}]),
] {
let mut body = json!({
"model": "deepseek-chat",
"tools": tools,
"messages": [
{"role": "user", "content": "hi"},
{"role": "assistant", "content": "missing"},
{"role": "assistant", "content": "null", "reasoning_content": null},
{"role": "assistant", "content": "empty", "reasoning_content": ""},
{"role": "assistant", "content": "answer", "reasoning_content": "original plan"}
]
});
let messages = body["messages"].clone();
apply_deepseek_tool_call_thinking_compat(
&mut body,
"deepseek",
"https://api.deepseek.com/v1",
"openai:chat",
None,
);
assert_eq!(body["messages"], messages);
}
}
#[test]
fn openai_chat_deepseek_preserves_reasoning_prefix_without_tools() {
let mut body = json!({
"model": "deepseek-chat",
"messages": [
{"role": "user", "content": "What is 1 + 1?"},
{
"role": "assistant",
"prefix": true,
"content": "",
"reasoning_content": "Start by adding one to one."
}
]
});
let messages = body["messages"].clone();
apply_deepseek_tool_call_thinking_compat(
&mut body,
"deepseek",
"https://api.deepseek.com/beta",
"openai:chat",
None,
);
assert_eq!(body["messages"], messages);
assert_eq!(body["thinking"]["type"], "enabled");
assert_eq!(body["messages"][1]["reasoning_content"], "");
}
#[test]