16 lines
1.3 KiB
TypeScript
16 lines
1.3 KiB
TypeScript
/**
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* 单请求摘要 Worker 入口。只接收 version/id/Blob，输出摘要或稳定错误码，不拥有任何模型、凭证或持久任务。
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* 宿主在完成/取消时 terminate；accepted 防止一个专用 Worker 误被重复消息启动第二份计算。
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*/
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import {digestWorkerSource} from './digest-worker-source.ts';
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// Dedicated to one request. Host terminates on success/failure/abort; no storage, model or credentials here.
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/** 将 globalThis 限定为本 Worker 使用的消息接口，避免引入浏览器页面组件依赖。 */
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const scope=globalThis as unknown as {onmessage:((event:MessageEvent)=>void)|null;postMessage(value:unknown):void};
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/** 首条有效请求被接受后保持 true，直到整个 Worker 被宿主终止。 */
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let accepted=false;
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/** 校验协议和请求后启动只读摘要；成功/失败都回显输入 ID 与字节数，供宿主核对。 */
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scope.onmessage=event=>{
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const request=event.data;if(accepted||!request||request.version!==1||!Number.isSafeInteger(request.id)||request.id<1||!(request.bytes instanceof Blob))return;accepted=true;
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void digestWorkerSource(request.bytes).then(sha256=>scope.postMessage({version:1,id:request.id,byteLength:request.bytes.size,sha256}),()=>scope.postMessage({version:1,id:request.id,byteLength:request.bytes.size,error:'digest_worker_failed'}));
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};
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