feat: make rerank timeout configurable via rerankTimeoutMs

[jlin53882]

feat: make rerank timeout configurable via rerankTimeoutMs

Summary

Add a configurable rerankTimeoutMs parameter to RetrievalConfig so that users running local/CPU-based rerank servers can adjust the timeout without patching source code. Closes #346.

Changes (4 lines across 1 file)

1. src/retriever.ts — RetrievalConfig interface

/** Rerank API timeout in milliseconds (default: 5000). Increase for local/CPU-based rerank servers. */
rerankTimeoutMs?: number;

2. src/retriever.ts — DEFAULT_RETRIEVAL_CONFIG

rerankEndpoint: "https://api.jina.ai/v1/rerank",
rerankTimeoutMs: 5000,

3. src/retriever.ts — rerankResults() method

// Before
const timeout = setTimeout(() => controller.abort(), 5000);

// After
const timeout = setTimeout(() => controller.abort(), this.config.rerankTimeoutMs ?? 5000);

4. src/retriever.ts — Warning message

// Before
console.warn("Rerank API timed out (5s), falling back to cosine");

// After
console.warn(`Rerank API timed out (${this.config.rerankTimeoutMs ?? 5000}ms), falling back to cosine`);

Usage Example

{
  "plugins": {
    "entries": {
      "memory-lancedb-pro": {
        "config": {
          "retrieval": {
            "rerankTimeoutMs": 120000
          }
        }
      }
    }
  }
}

Local Model Example (BAAI/bge-reranker-base via reranker_server.py)

{
  "plugins": {
    "entries": {
      "memory-lancedb-pro": {
        "config": {
          "retrieval": {
            "rerank": "cross-encoder",
            "rerankProvider": "siliconflow",
            "rerankEndpoint": "http://127.0.0.1:18799/v1/rerank",
            "rerankTimeoutMs": 120000
          }
        }
      }
    }
  }
}

Backward Compatibility

• Default 5000ms is identical to the current hardcoded behavior
• Users who don't specify rerankTimeoutMs see no change
• GPU users can keep short timeouts; CPU users can increase as needed

Issue

Closes #346

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[rwmjhb]

1. 公开配置面还没补完整。现在只改了 src/retriever.ts，但 openclaw.plugin.json 里的
   retrieval schema 还没有 rerankTimeoutMs，index.ts 里的 PluginConfig.retrieval 也没声明
   这个字段。这样运行时内部虽然有了配置位，但对用户来说配置入口还是不完整，schema/UI 侧也可能不认
   这个字段。
2. 这里的 timeout 最好放到 finally 里清理。当前是 fetch() 返回后才
   clearTimeout(timeout)，如果请求很快失败直接进 catch，timer 会一直挂到超时触发。以前 5s 影
   响不大，但这个 PR 的目标就是支持更长超时，比如 120000ms，这样失败路径下会把“快速回退”变成“进程
   多挂一段时间”。

[jlin53882]

Hi @rwmjhb, thanks for the detailed review! Both issues have been addressed:

1. Schema completeness ✅

• Added
  erankTimeoutMs to openclaw.plugin.json retrieval schema (with default: 5000, description, type: number)
• Added
  erankTimeoutMs?: number to PluginConfig.retrieval in index.ts

2. Timeout cleanup in finally ✅
\\ ypescript
const timeout = setTimeout(() => controller.abort(), timeoutMs);
let response: Response;
try {
response = await fetch(endpoint, { ... });
} finally {
clearTimeout(timeout); // always cleaned up, even on fast failure
}
\\

Updated push — the branch \eat/rerank-timeout-configurable\ now contains all fixes. Thanks!