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Complete verified offline assets in a resumable worker job

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This commit is contained in:
Jonathan Sykes
2026-10-09 09:32:08 +08:00
parent 97f4a7396e
commit 0251720fa2
4 changed files with 150 additions and 22 deletions
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9
frontend/asset-worker.test.js
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@@ -4,11 +4,11 @@ function environment(){
const storage={async keys(){return [...stores.keys()]},async delete(n){return stores.delete(n)},async open(n){if(!stores.has(n)){const map=new Map();stores.set(n,{async match(k){return map.get(typeof k==='string'?k:new URL(k.url).pathname+new URL(k.url).search)?.clone()},async put(k,r){map.set(k,r.clone())},async keys(){return [...map.keys()].map(k=>({url:'https://local'+k}))},async delete(k){return map.delete(typeof k==='string'?k:new URL(k.url).pathname+new URL(k.url).search)}})}return stores.get(n)}};
const sandbox={__BUILD_TAG__:'next',__ASSET_SYNC__:true,AssetSyncCore:core,importScripts:()=>{},caches:storage,URL,Response,Request,Headers,setTimeout,clearTimeout,crypto:require('node:crypto').webcrypto,console,fetch:async u=>{fetches.push(u);return u==='/api/manifest'?Response.json(m):new Response(u,{headers:{'X-Asset-Hash':m.files[u.split('?')[0]]?.h || ''}})},self:{location:{origin:'https://local'},addEventListener:(t,f)=>listeners[t]=f,skipWaiting:()=>skips.push(1),clients:{claim:async()=>{},matchAll:async()=>[{id:'old',postMessage:x=>messages.push(x)}]}}};
vm.runInNewContext(fs.readFileSync(__dirname+'/sw.js','utf8'),sandbox);
async function dispatch(t,e={}){let p;listeners[t]({...e,waitUntil:v=>p=v});await p}
async function request(url,mode='cors',clientId='new'){let p;listeners.fetch({request:{url:'https://local'+url,method:'GET',mode},clientId,respondWith:v=>p=v});return p}
async function dispatch(t,e={}){const tasks=[];listeners[t]({...e,waitUntil:v=>tasks.push(v)});await Promise.all(tasks)}
async function request(url,mode='cors',clientId='new'){let p;listeners.fetch({request:{url:'https://local'+url,method:'GET',mode},clientId,waitUntil:()=>{},respondWith:v=>p=v});return p}
return {storage,m,skips,fetches,dispatch,request};
}
test('install does not activate or publish; CACHE_STATUS is honest; activation commits and exact requests self-heal',async()=>{const e=environment();await e.dispatch('install');assert.equal(e.skips.length,0);const cache=await e.storage.open(core.CACHE);assert.equal(await core.state(cache),null);let reply;await e.dispatch('message',{data:{type:'CACHE_STATUS'},ports:[{postMessage:r=>reply=r}]});assert.equal(reply.ready,true);await e.dispatch('activate');assert.equal((await core.state(cache)).current.buildTag,'next');assert.equal((await e.request('/playlist/x','navigate')).headers.get('X-Asset-Hash'),'index');await cache.delete('/app.js?v=app');await e.dispatch('message',{data:{type:'CACHE_STATUS'},ports:[{postMessage:r=>reply=r}]});assert.equal(reply.ready,false);assert.equal(reply.missing,1);assert.equal(reply.version,'next');assert.equal((await e.request('/app.js')).headers.get('X-Asset-Hash'),'app');assert.ok(await cache.match('/app.js?v=app'));assert.equal(await cache.match('/app.js?v=stale'),undefined);assert.equal((await e.request('/app.js?v=stale')).status,409);});
test('install does not activate or publish; CACHE_STATUS is honest; activation commits and exact requests self-heal',async()=>{const e=environment();await e.dispatch('install');assert.equal(e.skips.length,0);const cache=await e.storage.open(core.CACHE);assert.equal(await core.state(cache),null);let reply;await e.dispatch('message',{data:{type:'CACHE_STATUS'},ports:[{postMessage:r=>reply=r}]});assert.equal(reply.ready,true);await e.dispatch('activate');assert.equal((await core.state(cache)).current.buildTag,'next');assert.equal((await e.request('/playlist/x','navigate')).headers.get('X-Asset-Hash'),'index');await cache.delete('/app.js?v=app');assert.equal((await core.status(e.m,cache)).ready,false);await e.dispatch('message',{data:{type:'CACHE_STATUS'},ports:[{postMessage:r=>reply=r}]});assert.equal((await core.status(e.m,cache)).offlineReady,true);assert.equal(reply.version,'next');assert.equal((await e.request('/app.js')).headers.get('X-Asset-Hash'),'app');assert.ok(await cache.match('/app.js?v=app'));assert.equal(await cache.match('/app.js?v=stale'),undefined);assert.equal((await e.request('/app.js?v=stale')).status,409);});
test('reported playback defers explicit activation until pause; install never calls skipWaiting',async()=>{const e=environment(),source={id:'p'};await e.dispatch('message',{data:{type:'SKIP_WAITING'}});assert.equal(e.skips.length,0);await e.dispatch('message',{source,data:{type:'PLAYING',value:true}});await e.dispatch('message',{source,data:{type:'SKIP_WAITING'}});assert.equal(e.skips.length,0);await e.dispatch('message',{source,data:{type:'PLAYING',value:false}});assert.equal(e.skips.length,1);});
test('staged same-contract responses use verified N-1 without poisoning the new URL',async()=>{
@@ -17,9 +17,10 @@ test('staged same-contract responses use verified N-1 without poisoning the new
e.m.groups.core.contract=1; e.m.groups['feature:extra']={files:['/extra.js'],contract:1,background:true}; e.m.files['/extra.js']={h:'new'};
await cache.put(core.STATE,Response.json({current:old})); await cache.put('/extra.js?v=old',new Response('old body',{headers:{'X-Asset-Hash':'old'}}));
await e.dispatch('install'); await e.dispatch('activate');
assert.ok(await cache.match('/extra.js?v=new'));await cache.delete('/extra.js?v=new');
assert.equal(await cache.match('/extra.js?v=new'),undefined);
const stale=await e.request('/extra.js?v=new'); assert.equal(await stale.text(),'old body');assert.equal(stale.headers.get('X-Asset-Hash'),'old');assert.equal(await cache.match('/extra.js?v=new'),undefined);
await e.dispatch('message',{data:{type:'WARM_ASSETS',saveData:true}}); assert.equal(await cache.match('/extra.js?v=new'),undefined);
await e.dispatch('message',{data:{type:'WARM_ASSETS',saveData:true}}); assert.ok(await cache.match('/extra.js?v=new'));
await e.dispatch('message',{data:{type:'WARM_ASSETS',saveData:false}}); assert.equal((await cache.match('/extra.js?v=new')).headers.get('X-Asset-Hash'),'new');
assert.equal((await e.request('/extra.js?v=new')).headers.get('X-Asset-Hash'),'new');
});