Merge pull request #389 from NebulousLabs/restructure-health-checks
restructure health-check architecture
This commit is contained in:
Karol Wypchło
GitHub
commit
68450b6995
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@ -1,8 +0,0 @@
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const db = require("../db");
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// returns all health check entries
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module.exports = (req, res) => {
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const entries = db.get("entries").orderBy("date", "desc").value();
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res.send(entries);
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};
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@ -0,0 +1,14 @@
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const db = require("../db");
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const { getYesterdayISOString } = require("../utils");
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// returns all critical health check entries
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module.exports = (req, res) => {
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const yesterday = getYesterdayISOString();
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const entries = db
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.get("critical")
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.orderBy("date", "desc")
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.filter(({ date }) => date > yesterday)
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.value();
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res.send(entries);
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};
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@ -2,61 +2,74 @@ const { StatusCodes } = require("http-status-codes");
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const { sum, sumBy } = require("lodash");
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const db = require("../db");
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// getStatus returns the server's current health check status
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function getStatus() {
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const disabled = db.get("disabled").value();
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/**
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* Get status code that should be returned in the API response.
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* - OK (200) in case everything is healthy
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* - SERVICE_UNAVAILABLE (503) in case of any failures or if disabled
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*/
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function getStatusCode() {
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// check whether the portal has been manually disabled
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const disabled = getDisabled();
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if (disabled) {
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return StatusCodes.SERVICE_UNAVAILABLE;
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}
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// Grab entry element from DB
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const entry = db.get("entries").orderBy("date", "desc").head().value();
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// grab the most recent critical entry element from DB
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const entry = getMostRecentCriticalEntry();
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// Check that every critical check entry is up
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if (entry && entry.checks.every(({ up, critical }) => up && critical)) {
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return StatusCodes.OK;
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}
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// At least one check failed
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// in case there is no entry yet or at least one check failed in the most recent entry
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if (!entry || entry.checks.some(({ up }) => !up)) {
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return StatusCodes.SERVICE_UNAVAILABLE;
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}
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// getTimeout returns the average time out from a sample of 10 health check
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// entries.
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function getTimeout() {
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if (getStatus() === StatusCodes.SERVICE_UNAVAILABLE) {
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return 0;
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return StatusCodes.OK;
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}
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// Grab 10 entries from the database as a sample to determine the average
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// timeout for the server.
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/**
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* Get the sample of most recent critical entries and
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* calculate the average response time of all of them
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*/
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function getAverageResponseTime() {
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// get most recent 10 successfull checks for the calculation
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const sample = db
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.get("entries")
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.get("critical")
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.orderBy("date", "desc")
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.filter(({ checks }) => checks.every(({ up, critical }) => up && critical))
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.filter(({ checks }) => checks.every(({ up }) => up))
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.take(10)
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.value();
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// Return average timeout
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// calculate average time of response
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return Math.round(sum(sample.map(({ checks }) => sumBy(checks, "time"))) / sample.size);
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}
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// getEntriesSinceYesterday gets the health check entries since yesterday
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function getEntriesSinceYesterday() {
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const yesterday = new Date();
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/**
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* Get one, most current critical entry
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*/
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function getMostRecentCriticalEntry() {
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return db.get("critical").orderBy("date", "desc").head().value();
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}
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yesterday.setDate(yesterday.getDate() - 1);
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return db
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.get("entries")
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.orderBy("date", "desc")
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.filter(({ date }) => date >= yesterday.toISOString())
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.value();
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/**
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* Get the disabled flag state (manual portal disable)
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*/
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function getDisabled() {
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return db.get("disabled").value();
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}
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module.exports = (req, res) => {
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const statusCode = getStatusCode();
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const timeout = statusCode === StatusCodes.OK ? getAverageResponseTime() : 0;
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// We want to delay the response for the load balancer to be able to prioritize
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// servers based on the successful response time of this endpoint. Load balancer
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// will pull the server if the response is an error so there is no point in delaying
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// failures, hence 0 timeout on those.
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setTimeout(() => {
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res.status(getStatus()).send(getEntriesSinceYesterday());
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}, getTimeout());
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// include some health information in the response body
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const entry = getMostRecentCriticalEntry();
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const disabled = getDisabled();
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res.status(statusCode).send({ disabled, entry });
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}, timeout);
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};
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@ -1,16 +0,0 @@
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const db = require("../db");
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// returns all health check entries that are not older than one day
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module.exports = (req, res) => {
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const yesterday = new Date();
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yesterday.setDate(yesterday.getDate() - 1);
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const entries = db
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.get("entries")
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.orderBy("date", "desc")
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.filter(({ date }) => date >= yesterday.toISOString())
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.value();
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res.send(entries);
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};
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@ -0,0 +1,14 @@
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const db = require("../db");
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const { getYesterdayISOString } = require("../utils");
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// returns all verbose health check entries
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module.exports = (req, res) => {
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const yesterday = getYesterdayISOString();
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const entries = db
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.get("verbose")
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.orderBy("date", "desc")
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.filter(({ date }) => date > yesterday)
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.value();
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res.send(entries);
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};
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@ -17,7 +17,6 @@ async function uploadCheck(done) {
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up: statusCode === StatusCodes.OK,
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statusCode,
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time: calculateElapsedTime(time),
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critical: true,
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});
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});
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}
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@ -41,7 +40,6 @@ async function downloadCheck(done) {
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up: statusCode === StatusCodes.OK,
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statusCode,
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time: calculateElapsedTime(time),
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critical: true,
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});
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}
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@ -60,9 +60,477 @@ function dappExampleCheck(done) {
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skylink: "EADWpKD0myqH2tZa6xtKebg6kNnwYnI94fl4R8UKgNrmOA",
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bodyHash: "d6ad2506590bb45b5acc6a8a964a3da4d657354f",
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metadata: {
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filename: "/index.html",
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length: 4131,
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filename: "build",
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||||
filename: "static/js/8.7975098c.chunk.js",
|
||||
contenttype: "text/javascript",
|
||||
offset: 13796515,
|
||||
len: 420712,
|
||||
},
|
||||
"static/js/8.7975098c.chunk.js.LICENSE": {
|
||||
filename: "static/js/8.7975098c.chunk.js.LICENSE",
|
||||
contenttype: "application/octet-stream",
|
||||
offset: 13796191,
|
||||
len: 324,
|
||||
},
|
||||
"static/js/8.7975098c.chunk.js.map": {
|
||||
filename: "static/js/8.7975098c.chunk.js.map",
|
||||
contenttype: "application/octet-stream",
|
||||
offset: 12871047,
|
||||
len: 925144,
|
||||
},
|
||||
"static/js/9.cc860b76.chunk.js": {
|
||||
filename: "static/js/9.cc860b76.chunk.js",
|
||||
contenttype: "text/javascript",
|
||||
offset: 14557928,
|
||||
len: 920812,
|
||||
},
|
||||
"static/js/9.cc860b76.chunk.js.LICENSE": {
|
||||
filename: "static/js/9.cc860b76.chunk.js.LICENSE",
|
||||
contenttype: "application/octet-stream",
|
||||
offset: 15478740,
|
||||
len: 4559,
|
||||
},
|
||||
"static/js/9.cc860b76.chunk.js.map": {
|
||||
filename: "static/js/9.cc860b76.chunk.js.map",
|
||||
contenttype: "application/octet-stream",
|
||||
offset: 7434773,
|
||||
len: 2764565,
|
||||
},
|
||||
"static/js/main.a7822f79.chunk.js": {
|
||||
filename: "static/js/main.a7822f79.chunk.js",
|
||||
contenttype: "text/javascript",
|
||||
offset: 7168627,
|
||||
len: 131523,
|
||||
},
|
||||
"static/js/main.a7822f79.chunk.js.map": {
|
||||
filename: "static/js/main.a7822f79.chunk.js.map",
|
||||
contenttype: "application/octet-stream",
|
||||
offset: 6929101,
|
||||
len: 239179,
|
||||
},
|
||||
"static/js/runtime-main.68d129c6.js": {
|
||||
filename: "static/js/runtime-main.68d129c6.js",
|
||||
contenttype: "text/javascript",
|
||||
offset: 14217227,
|
||||
len: 3546,
|
||||
},
|
||||
"static/js/runtime-main.68d129c6.js.map": {
|
||||
filename: "static/js/runtime-main.68d129c6.js.map",
|
||||
contenttype: "application/octet-stream",
|
||||
offset: 14220773,
|
||||
len: 16590,
|
||||
},
|
||||
"static/media/arrow-down-blue.cd061363.svg": {
|
||||
filename: "static/media/arrow-down-blue.cd061363.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 219284,
|
||||
len: 326,
|
||||
},
|
||||
"static/media/arrow-down-grey.c0dedd2f.svg": {
|
||||
filename: "static/media/arrow-down-grey.c0dedd2f.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 196726,
|
||||
len: 326,
|
||||
},
|
||||
"static/media/arrow-right-white.337ad716.png": {
|
||||
filename: "static/media/arrow-right-white.337ad716.png",
|
||||
contenttype: "image/png",
|
||||
offset: 197052,
|
||||
len: 12999,
|
||||
},
|
||||
"static/media/arrow-right.d285b6cf.svg": {
|
||||
filename: "static/media/arrow-right.d285b6cf.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 289065,
|
||||
len: 263,
|
||||
},
|
||||
"static/media/circle-grey.ed2a1dad.svg": {
|
||||
filename: "static/media/circle-grey.ed2a1dad.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 210213,
|
||||
len: 321,
|
||||
},
|
||||
"static/media/circle.2d975615.svg": {
|
||||
filename: "static/media/circle.2d975615.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 210534,
|
||||
len: 321,
|
||||
},
|
||||
"static/media/coinbaseWalletIcon.62578f59.svg": {
|
||||
filename: "static/media/coinbaseWalletIcon.62578f59.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 220450,
|
||||
len: 53626,
|
||||
},
|
||||
"static/media/dropdown-blue.b20914ec.svg": {
|
||||
filename: "static/media/dropdown-blue.b20914ec.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 47369,
|
||||
len: 164,
|
||||
},
|
||||
"static/media/dropdown.7d32d2fa.svg": {
|
||||
filename: "static/media/dropdown.7d32d2fa.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 287941,
|
||||
len: 164,
|
||||
},
|
||||
"static/media/dropup-blue.b96d70e1.svg": {
|
||||
filename: "static/media/dropup-blue.b96d70e1.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 210051,
|
||||
len: 162,
|
||||
},
|
||||
"static/media/ethereum-logo.802c6eac.svg": {
|
||||
filename: "static/media/ethereum-logo.802c6eac.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 219610,
|
||||
len: 840,
|
||||
},
|
||||
"static/media/magnifying-glass.67440097.svg": {
|
||||
filename: "static/media/magnifying-glass.67440097.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 210855,
|
||||
len: 8429,
|
||||
},
|
||||
"static/media/metamask.023762b6.png": {
|
||||
filename: "static/media/metamask.023762b6.png",
|
||||
contenttype: "image/png",
|
||||
offset: 61600,
|
||||
len: 114217,
|
||||
},
|
||||
"static/media/plus-blue.e8021e51.svg": {
|
||||
filename: "static/media/plus-blue.e8021e51.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 196237,
|
||||
len: 190,
|
||||
},
|
||||
"static/media/plus-grey.d8e0be7d.svg": {
|
||||
filename: "static/media/plus-grey.d8e0be7d.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 288875,
|
||||
len: 190,
|
||||
},
|
||||
"static/media/portisIcon.b234b2bf.png": {
|
||||
filename: "static/media/portisIcon.b234b2bf.png",
|
||||
contenttype: "image/png",
|
||||
offset: 274076,
|
||||
len: 13865,
|
||||
},
|
||||
"static/media/question-mark.1ae4d9f4.svg": {
|
||||
filename: "static/media/question-mark.1ae4d9f4.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 175817,
|
||||
len: 818,
|
||||
},
|
||||
"static/media/question.cc0a2451.svg": {
|
||||
filename: "static/media/question.cc0a2451.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 288105,
|
||||
len: 770,
|
||||
},
|
||||
"static/media/spinner.be00fc4a.svg": {
|
||||
filename: "static/media/spinner.be00fc4a.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 47533,
|
||||
len: 694,
|
||||
},
|
||||
"static/media/trustWallet.edcc1ab5.png": {
|
||||
filename: "static/media/trustWallet.edcc1ab5.png",
|
||||
contenttype: "image/png",
|
||||
offset: 176635,
|
||||
len: 19602,
|
||||
},
|
||||
"static/media/walletConnectIcon.8215855c.svg": {
|
||||
filename: "static/media/walletConnectIcon.8215855c.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 48227,
|
||||
len: 13373,
|
||||
},
|
||||
"static/media/x.5b8e2186.svg": {
|
||||
filename: "static/media/x.5b8e2186.svg",
|
||||
contenttype: "image/svg+xml",
|
||||
offset: 196427,
|
||||
len: 299,
|
||||
},
|
||||
},
|
||||
},
|
||||
};
|
||||
|
||||
|
|
@ -575,8 +1043,8 @@ function skylinkVerification(done, { name, skylink, bodyHash, metadata }) {
|
|||
}
|
||||
|
||||
// Check if the metadata is valid by deep comparing expected value with response
|
||||
const currentMetadata =
|
||||
response.header["skynet-file-metadata"] && JSON.parse(response.header["skynet-file-metadata"]);
|
||||
const metadataHeader = response.header["skynet-file-metadata"];
|
||||
const currentMetadata = metadataHeader && JSON.parse(metadataHeader);
|
||||
if (!isEqual(currentMetadata, metadata)) {
|
||||
entry.up = false;
|
||||
info.metadata = detailedDiff(currentMetadata, metadata);
|
||||
|
|
|
|||
|
|
@ -5,9 +5,9 @@ const Memory = require("lowdb/adapters/Memory");
|
|||
|
||||
if (!fs.existsSync("state")) fs.mkdirSync("state");
|
||||
|
||||
const adapter = process.env.NODE_ENV === "production" ? new FileSync("state/state.json") : new Memory();
|
||||
const adapter = new FileSync("state/state.json");
|
||||
const db = low(adapter);
|
||||
|
||||
db.defaults({ disabled: false, entries: [] }).write();
|
||||
db.defaults({ disabled: false, critical: [], verbose: [] }).write();
|
||||
|
||||
module.exports = db;
|
||||
|
|
|
|||
|
|
@ -18,8 +18,8 @@ server.use(bodyparser.urlencoded({ extended: false }));
|
|||
server.use(bodyparser.json());
|
||||
|
||||
server.get("/health-check", require("./api/index"));
|
||||
server.get("/health-check/recent", require("./api/recent"));
|
||||
server.get("/health-check/all", require("./api/all"));
|
||||
server.get("/health-check/critical", require("./api/critical"));
|
||||
server.get("/health-check/verbose", require("./api/verbose"));
|
||||
server.get("/health-check/disabled", require("./api/disabled"));
|
||||
|
||||
server.listen(port, host, (error) => {
|
||||
|
|
|
|||
|
|
@ -4,25 +4,27 @@ const { criticalChecks } = require("./checks/critical");
|
|||
const { verboseChecks } = require("./checks/verbose");
|
||||
|
||||
// execute the critical health-check script every 5 minutes
|
||||
const basicJob = schedule.scheduleJob("*/5 * * * *", async () => {
|
||||
const entry = { date: new Date().toISOString(), checks: [] };
|
||||
const criticalJob = schedule.scheduleJob("*/5 * * * *", async () => {
|
||||
const entry = {
|
||||
date: new Date().toISOString(),
|
||||
checks: await Promise.all(criticalChecks.map((check) => new Promise(check))),
|
||||
};
|
||||
|
||||
entry.checks = await Promise.all(criticalChecks.map((check) => new Promise(check)));
|
||||
|
||||
db.get("entries").push(entry).write();
|
||||
db.get("critical").push(entry).write();
|
||||
});
|
||||
|
||||
// execute the verbose health-check script once per hour
|
||||
const verboseJob = schedule.scheduleJob("0 * * * *", async () => {
|
||||
const entry = { date: new Date().toISOString(), checks: [] };
|
||||
const entry = {
|
||||
date: new Date().toISOString(),
|
||||
checks: await Promise.all(verboseChecks.map((check) => new Promise(check))),
|
||||
};
|
||||
|
||||
entry.checks = await Promise.all(verboseChecks.map((check) => new Promise(check)));
|
||||
|
||||
db.get("entries").push(entry).write();
|
||||
db.get("verbose").push(entry).write();
|
||||
});
|
||||
|
||||
// Launch Health check jobs
|
||||
setTimeout(() => {
|
||||
basicJob.invoke();
|
||||
criticalJob.invoke();
|
||||
verboseJob.invoke();
|
||||
}, 60 * 1000); // delay for 60s to give other services time to start up
|
||||
|
|
|
|||
|
|
@ -1,8 +1,21 @@
|
|||
// return the time between start and now in milliseconds
|
||||
/**
|
||||
* Get the time between start and now in milliseconds
|
||||
*/
|
||||
function calculateElapsedTime(start) {
|
||||
const diff = process.hrtime(start);
|
||||
|
||||
return Math.round((diff[0] * 1e9 + diff[1]) / 1e6); // msec
|
||||
}
|
||||
|
||||
module.exports = { calculateElapsedTime };
|
||||
/**
|
||||
* Get the ISO string with yesterday's date set (- 24 hours)
|
||||
*/
|
||||
function getYesterdayISOString() {
|
||||
const date = new Date();
|
||||
|
||||
date.setDate(date.getDate() - 1);
|
||||
|
||||
return date.toISOString();
|
||||
}
|
||||
|
||||
module.exports = { calculateElapsedTime, getYesterdayISOString };
|
||||
|
|
|
|||
|
|
@ -55,7 +55,7 @@ async def run_checks():
|
|||
try:
|
||||
await check_load_average()
|
||||
await check_disk()
|
||||
await check_health()
|
||||
# await check_health() # FIXME: adjust it to work with https://github.com/NebulousLabs/skynet-webportal/pull/389
|
||||
except:
|
||||
trace = traceback.format_exc()
|
||||
print("[DEBUG] run_checks() failed.")
|
||||
|
|
|
|||
Reference in New Issue