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Safe writing

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This commit is contained in:
Marco van Dijk 2024-12-01 16:02:21 +01:00
parent a81ccb7165
commit 0f30cf4a27
1 changed files with 26 additions and 2 deletions
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28
master/worker.js
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@ -75,6 +75,7 @@ let jsonString = "";
let lastLeaderboardCheck = 0;
let lastStringify = 0;
let isSynced = false;
let storageLock = false;
/*
* Function Skeletons
@ -87,6 +88,25 @@ function sleep(ms) {
});
}
async function withStorageLock(fn) {
while (storageLock) {
await sleep(50); // Small delay before retry
}
storageLock = true;
try {
await fn();
} finally {
storageLock = false;
}
}
async function safeWrite(key, data) {
const tempKey = `${key}.tmp`;
await storage.setItem(tempKey, data); // Write to temp key
await storage.removeItem(key); // Remove original key
await storage.setItem(key, data); // Rename temp key to original
}
// Process the task queue continuously
async function processQueue() {
while (true) {
@ -141,7 +161,9 @@ async function getEnsDomain(addr) {
ensObj.timestamp
);
ensDomainCache[addr] = ensObj;
await storage.setItem("ensDomainCache", ensDomainCache);
await withStorageLock(async () => {
await safeWrite("ensDomainCache", ensDomainCache);
});
if (ensObj.domain) {
// Update domain name
return ensObj.domain;
@ -383,7 +405,9 @@ async function onOrchUpdate(id, obj, tag, region, livepeer_regions) {
newObj.instances[obj.resolv.resolvedTarget] = newInstance;
newObj.regionalStats[tag] = newRegion;
orchCache[id.toLowerCase()] = newObj;
await storage.setItem("orchCache", orchCache);
await withStorageLock(async () => {
await safeWrite("orchCache", orchCache);
});
// Update prometheus stats
updatePrometheus(tag, obj.resolv.resolvedTarget, newObj);