under-pressure - npm Package Compare versions

Comparing version 5.7.0 to 5.8.0

index.js

@@ -141,2 +141,3 @@ 'use strict'
       eventLoopDelay = Math.max(0, histogram.mean / 1e6 - resolution)
+      if (Number.isNaN(eventLoopDelay)) eventLoopDelay = Infinity
       histogram.reset()
@@ -143,0 +144,0 @@ } else {

package.json

 {
   "name": "under-pressure",
-  "version": "5.7.0",
+  "version": "5.8.0",
   "description": "Measure process load with automatic handling of 'Service Unavailable' plugin for Fastify.",
@@ -33,3 +33,3 @@ "main": "index.js",
   "devDependencies": {
-    "@types/node": "^15.0.1",
+    "@types/node": "^16.3.1",
     "fastify": "^3.0.0",
@@ -41,3 +41,3 @@ "pre-commit": "^1.2.2",
     "standard": "^16.0.0",
-    "tap": "^15.0.3",
+    "tap": "^15.0.10",
     "tsd": "^0.14.0",
@@ -44,0 +44,0 @@ "typescript": "^4.0.3"

test/pressurehandler.test.js

@@ -237,1 +237,46 @@ 'use strict'
 })
+
+test('event loop delay (NaN)', { skip: !isSupportedVersion }, t => {
+  t.plan(5)
+
+  const mockedUnderPressure = t.mock('../index', {
+    perf_hooks: {
+      monitorEventLoopDelay: () => ({
+        enable: () => { },
+        reset: () => { },
+        mean: NaN
+      }),
+      performance: {
+        eventLoopUtilization: () => { }
+      }
+    }
+  })
+
+  const fastify = Fastify()
+  fastify.register(mockedUnderPressure, {
+    maxEventLoopDelay: 1000,
+    pressureHandler: (req, rep, type, value) => {
+      t.equal(type, underPressure.TYPE_EVENT_LOOP_DELAY)
+      t.equal(value, Infinity)
+      rep.send('B')
+    }
+  })
+
+  fastify.get('/', async (req, rep) => rep.send('A'))
+
+  fastify.listen(0, (err, address) => {
+    t.error(err)
+    fastify.server.unref()
+
+    process.nextTick(() => block(1000))
+
+    sget({
+      method: 'GET',
+      url: address
+    }, (err, response, body) => {
+      t.error(err)
+      t.equal(body.toString(), 'B')
+      fastify.close()
+    })
+  })
+})

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Improved metrics

Total package byte prevSize

49084

increased by2.18%

Lines of code

1271

increased by3.17%

No dependency changes