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Always return cached value when thegraph errors

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This commit is contained in:
Marco van Dijk 2022-03-21 15:14:38 +01:00
parent e0795f8bf2
commit d6bfdc2551
1 changed files with 63 additions and 49 deletions
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48
backend/src/routes/livepeer.js
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@ -22,15 +22,15 @@ import { request, gql } from 'graphql-request';
let CoinMarketCap = require('coinmarketcap-api');
let cmcClient = new CoinMarketCap(API_CMC);
let cmcEnabled = false;
if(!CONF_DISABLE_CMC){
if(API_CMC == ""){
if (!CONF_DISABLE_CMC) {
if (API_CMC == "") {
console.log("Please provide a CMC api key");
}else {
} else {
CoinMarketCap = require('coinmarketcap-api');
cmcClient = new CoinMarketCap(API_CMC);
cmcEnabled = true;
}
}else{
} else {
console.log("Running without CMC api");
}
// Gets blockchain data
@ -373,10 +373,10 @@ const handleSync = async function () {
syncEvents();
while (isEventSyncing || isTicketSyncing) {
await sleep(3000);
if (isEventSyncing){
if (isEventSyncing) {
console.log("Parsed " + lastBlockEvents + " out of " + latestBlockInChain + " blocks for Event sync");
}
if (isTicketSyncing){
if (isTicketSyncing) {
console.log("Parsed " + lastBlockTickets + " out of " + latestBlockInChain + " blocks for Ticket sync");
}
}
@ -412,7 +412,7 @@ if (!isEventSyncing && !CONF_SIMPLE_MODE && !CONF_DISABLE_SYNC) {
// Splits of raw CMC object into coin quote data
const parseCmc = async function () {
try {
if (!cmcEnabled){
if (!cmcEnabled) {
return;
}
cmcCache = await cmcClient.getTickers({ limit: 200 });
@ -585,6 +585,7 @@ apiRouter.get("/getTickets", async (req, res) => {
// Gets info on a given Orchestrator
const parseOrchestrator = async function (reqAddr) {
try {
reqAddr = reqAddr.toLowerCase();
const now = new Date().getTime();
// Default assume it's the first time we request this Orchestrator
@ -668,6 +669,19 @@ const parseOrchestrator = async function (reqAddr) {
}
}
return orchestratorObj;
} catch (err) {
if (wasCached) {
console.log("Thegraph is probably acting up. Returning cached value...");
for (var idx = 0; idx < orchestratorCache.length; idx++) {
if (orchestratorCache[idx].id == reqAddr) {
return orchestratorCache[idx];
}
}
} else{
console.log("Thegraph is probably acting up, but there is no cached value. Returning null...");
return {};
}
}
}
// Exports info on a given Orchestrator
@ -678,7 +692,7 @@ apiRouter.get("/getOrchestrator", async (req, res) => {
reqOrch = CONF_DEFAULT_ORCH;
}
const reqObj = await parseOrchestrator(reqOrch);
res.send(JSON.stringify(reqObj));
res.send(reqObj);
} catch (err) {
console.log(err);
res.status(400).send(err);
@ -687,7 +701,7 @@ apiRouter.get("/getOrchestrator", async (req, res) => {
apiRouter.get("/getOrchestrator/:orch", async (req, res) => {
try {
const reqObj = await parseOrchestrator(req.params.orch);
res.send(JSON.stringify(reqObj));
res.send(reqObj);
} catch (err) {
console.log(err);
res.status(400).send(err);
@ -696,7 +710,7 @@ apiRouter.get("/getOrchestrator/:orch", async (req, res) => {
apiRouter.post("/getOrchestrator", async (req, res) => {
try {
const reqObj = await parseOrchestrator(req.body.orchAddr);
res.send(JSON.stringify(reqObj));
res.send(reqObj);
} catch (err) {
console.log(err);
res.status(400).send(err);
@ -966,7 +980,7 @@ const getEnsDomain = async function (addr) {
for (const thisAddr of ensDomainCache) {
if (thisAddr.address === addr) {
// Check timeout
if (now - thisAddr.timestamp < CONF_TIMEOUT_ENS_DOMAIN ){
if (now - thisAddr.timestamp < CONF_TIMEOUT_ENS_DOMAIN) {
return thisAddr.domain;
}
wasInCache = true;
@ -975,7 +989,7 @@ const getEnsDomain = async function (addr) {
// Else get it and cache it
const ensDomain = await provider.lookupAddress(addr.toLowerCase());
let ensObj;
if (!ensDomain){
if (!ensDomain) {
ensObj = {
domain: null,
address: addr,
@ -988,7 +1002,7 @@ const getEnsDomain = async function (addr) {
timestamp: now
};
}
if (wasInCache){
if (wasInCache) {
for (var idx = 0; idx < ensDomainCache.length; idx++) {
if (ensDomainCache[idx].address == addr) {
console.log("Updating outdated domain " + ensObj.domain + " owned by " + ensObj.address + " @ " + ensObj.timestamp);
@ -1010,7 +1024,7 @@ const getEnsInfo = async function (addr) {
for (const thisAddr of ensInfoCache) {
if (thisAddr.domain === addr) {
// Check timeout
if (now - thisAddr.timestamp < CONF_TIMEOUT_ENS_INFO ){
if (now - thisAddr.timestamp < CONF_TIMEOUT_ENS_INFO) {
return thisAddr;
}
wasInCache = true;
@ -1028,7 +1042,7 @@ const getEnsInfo = async function (addr) {
avatar,
timestamp: now
};
if (wasInCache){
if (wasInCache) {
for (var idx = 0; idx < ensInfoCache.length; idx++) {
if (ensInfoCache[idx].domain == addr) {
console.log("Updating outdated info " + ensObj.domain + " @ " + ensObj.timestamp);
@ -1048,8 +1062,8 @@ apiRouter.get("/getENS/:orch", async (req, res) => {
try {
// First resolve addr => domain name
const ensDomain = await getEnsDomain(req.params.orch);
if (!ensDomain){
res.send({domain: null});
if (!ensDomain) {
res.send({ domain: null });
return;
}
// Then resolve address to info