Graceful shutdown on SIGINT (e.g. from 'pm2 stop').

Author: mwoodiupui

package.json

@@ -99,6 +99,7 @@
     "fast-json-patch": "^3.1.1",
     "filesize": "^6.1.0",
     "http-proxy-middleware": "^1.0.5",
+    "http-terminator": "^3.2.0",
     "isbot": "^3.6.10",
     "js-cookie": "2.2.1",
     "js-yaml": "^4.1.0",

server.ts

@@ -32,6 +32,7 @@ import isbot from 'isbot';
 import { createCertificate } from 'pem';
 import { createServer } from 'https';
 import { json } from 'body-parser';
+import { createHttpTerminator } from 'http-terminator';
 
 import { readFileSync } from 'fs';
 import { join } from 'path';
@@ -487,7 +488,7 @@ function saveToCache(req, page: any) {
  */
 function hasNotSucceeded(statusCode) {
   const rgx = new RegExp(/^20+/);
-  return !rgx.test(statusCode)
+  return !rgx.test(statusCode);
 }
 
 function retrieveHeaders(response) {
@@ -525,12 +526,20 @@ function serverStarted() {
  * @param keys SSL credentials
  */
 function createHttpsServer(keys) {
-  createServer({
+  const listener = createServer({
     key: keys.serviceKey,
     cert: keys.certificate
   }, app).listen(environment.ui.port, environment.ui.host, () => {
     serverStarted();
   });
+
+  // Graceful shutdown when signalled
+  const terminator = createHttpTerminator({server: listener});
+  process.on('SIGINT', ()=> {
+      console.debug('Closing HTTPS server on signal');
+      terminator.terminate().catch(e => { console.error(e); });
+      console.debug('HTTPS server closed');
+      });
 }
 
 function run() {
@@ -539,9 +548,17 @@ function run() {
 
   // Start up the Node server
   const server = app();
-  server.listen(port, host, () => {
+  const listener = server.listen(port, host, () => {
     serverStarted();
   });
+
+  // Graceful shutdown when signalled
+  const terminator = createHttpTerminator({server: listener});
+  process.on('SIGINT', ()=> {
+      console.debug('Closing HTTP server on signal');
+      terminator.terminate().catch(e => { console.error(e); });
+      console.debug('HTTP server closed.');
+      });
 }
 
 function start() {

yarn.lock

@@ -1761,6 +1761,11 @@
   resolved "https://registry.yarnpkg.com/@eslint/js/-/js-8.39.0.tgz#58b536bcc843f4cd1e02a7e6171da5c040f4d44b"
   integrity sha512-kf9RB0Fg7NZfap83B3QOqOGg9QmD9yBudqQXzzOtn3i4y7ZUXe5ONeW34Gwi+TxhH4mvj72R1Zc300KUMa9Bng==
 
+"@fastify/deepmerge@^1.0.0":
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/@fastify/deepmerge/-/deepmerge-1.3.0.tgz#8116858108f0c7d9fd460d05a7d637a13fe3239a"
+  integrity sha512-J8TOSBq3SoZbDhM9+R/u77hP93gz/rajSA+K2kGyijPpORPWUXHUpTaleoj+92As0S9uPRP7Oi8IqMf0u+ro6A==
+
 "@fortawesome/fontawesome-free@^6.4.0":
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-free/-/fontawesome-free-6.4.0.tgz#1ee0c174e472c84b23cb46c995154dc383e3b4fe"
@@ -3061,9 +3066,9 @@ ajv-keywords@^5.0.0:
   dependencies:
     fast-deep-equal "^3.1.3"
 
-ajv@8.12.0, ajv@^8.8.0:
+ajv@8.12.0, ajv@^8.10.0, ajv@^8.8.0:
   version "8.12.0"
-  resolved "https://registry.npmjs.org/ajv/-/ajv-8.12.0.tgz"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-8.12.0.tgz#d1a0527323e22f53562c567c00991577dfbe19d1"
   integrity sha512-sRu1kpcO9yLtYxBKvqfTeh9KzZEwO3STyX1HT+4CaDzC6HpTGYhIhPIzj9XuKU7KYDwnaeh5hcOwjy1QuJzBPA==
   dependencies:
     fast-deep-equal "^3.1.1"
@@ -3538,6 +3543,11 @@ boolbase@^1.0.0:
   resolved "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz"
   integrity sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww==
 
+boolean@^3.1.4:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/boolean/-/boolean-3.2.0.tgz#9e5294af4e98314494cbb17979fa54ca159f116b"
+  integrity sha512-d0II/GO9uf9lfUHH2BQsjxzRJZBdsjgsBiW4BvhWk/3qoKwQFjIDVN19PfX8F2D/r9PCMTtLWjYVCFrpeYUzsw==
+
 bootstrap@^4.6.1:
   version "4.6.2"
   resolved "https://registry.npmjs.org/bootstrap/-/bootstrap-4.6.2.tgz"
@@ -4641,6 +4651,11 @@ del@^2.2.0:
     pinkie-promise "^2.0.0"
     rimraf "^2.2.8"
 
+delay@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/delay/-/delay-5.0.0.tgz#137045ef1b96e5071060dd5be60bf9334436bd1d"
+  integrity sha512-ReEBKkIfe4ya47wlPYf/gu5ib6yUG0/Aez0JQZQz94kiWtRQvZIQbTiehsnwHvLSWJnQdhVeqYue7Id1dKr0qw==
+
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz"
@@ -5579,6 +5594,18 @@ fast-json-stable-stringify@2.1.0, fast-json-stable-stringify@^2.0.0:
   resolved "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz"
   integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
 
+fast-json-stringify@^5.8.0:
+  version "5.8.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stringify/-/fast-json-stringify-5.8.0.tgz#b229ed01ac5f92f3b82001a916c31324652f46d7"
+  integrity sha512-VVwK8CFMSALIvt14U8AvrSzQAwN/0vaVRiFFUVlpnXSnDGrSkOAO5MtzyN8oQNjLd5AqTW5OZRgyjoNuAuR3jQ==
+  dependencies:
+    "@fastify/deepmerge" "^1.0.0"
+    ajv "^8.10.0"
+    ajv-formats "^2.1.1"
+    fast-deep-equal "^3.1.3"
+    fast-uri "^2.1.0"
+    rfdc "^1.2.0"
+
 fast-levenshtein@^2.0.6, fast-levenshtein@~2.0.6:
   version "2.0.6"
   resolved "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz"
@@ -5589,6 +5616,18 @@ fast-memoize@^2.5.1:
   resolved "https://registry.npmjs.org/fast-memoize/-/fast-memoize-2.5.2.tgz"
   integrity sha512-Ue0LwpDYErFbmNnZSF0UH6eImUwDmogUO1jyE+JbN2gsQz/jICm1Ve7t9QT0rNSsfJt+Hs4/S3GnsDVjL4HVrw==
 
+fast-printf@^1.6.9:
+  version "1.6.9"
+  resolved "https://registry.yarnpkg.com/fast-printf/-/fast-printf-1.6.9.tgz#212f56570d2dc8ccdd057ee93d50dd414d07d676"
+  integrity sha512-FChq8hbz65WMj4rstcQsFB0O7Cy++nmbNfLYnD9cYv2cRn8EG6k/MGn9kO/tjO66t09DLDugj3yL+V2o6Qftrg==
+  dependencies:
+    boolean "^3.1.4"
+
+fast-uri@^2.1.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/fast-uri/-/fast-uri-2.2.0.tgz#519a0f849bef714aad10e9753d69d8f758f7445a"
+  integrity sha512-cIusKBIt/R/oI6z/1nyfe2FvGKVTohVRfvkOhvx0nCEW+xf5NoCXjAHcWp93uOUBchzYcsvPlrapAdX1uW+YGg==
+
 fastest-levenshtein@^1.0.12:
   version "1.0.16"
   resolved "https://registry.npmjs.org/fastest-levenshtein/-/fastest-levenshtein-1.0.16.tgz"
@@ -6021,9 +6060,9 @@ globals@^13.19.0:
   dependencies:
     type-fest "^0.20.2"
 
-globalthis@^1.0.3:
+globalthis@^1.0.2, globalthis@^1.0.3:
   version "1.0.3"
-  resolved "https://registry.npmjs.org/globalthis/-/globalthis-1.0.3.tgz"
+  resolved "https://registry.yarnpkg.com/globalthis/-/globalthis-1.0.3.tgz#5852882a52b80dc301b0660273e1ed082f0b6ccf"
   integrity sha512-sFdI5LyBiNTHjRd7cGPWapiHWMOXKyuBNX/cWJ3NfzrZQVa8GI/8cofCl74AOVqq9W5kNmguTIzJ/1s2gyI9wA==
   dependencies:
     define-properties "^1.1.3"
@@ -6372,6 +6411,16 @@ http-signature@~1.3.6:
     jsprim "^2.0.2"
     sshpk "^1.14.1"
 
+http-terminator@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/http-terminator/-/http-terminator-3.2.0.tgz#bc158d2694b733ca4fbf22a35065a81a609fb3e9"
+  integrity sha512-JLjck1EzPaWjsmIf8bziM3p9fgR1Y3JoUKAkyYEbZmFrIvJM6I8vVJfBGWlEtV9IWOvzNnaTtjuwZeBY2kwB4g==
+  dependencies:
+    delay "^5.0.0"
+    p-wait-for "^3.2.0"
+    roarr "^7.0.4"
+    type-fest "^2.3.3"
+
 https-proxy-agent@5.0.1, https-proxy-agent@^5.0.0, https-proxy-agent@^5.0.1:
   version "5.0.1"
   resolved "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz"
@@ -8609,6 +8658,11 @@ ospath@^1.2.2:
   resolved "https://registry.npmjs.org/ospath/-/ospath-1.2.2.tgz"
   integrity sha512-o6E5qJV5zkAbIDNhGSIlyOhScKXgQrSRMilfph0clDfM0nEnBOlKlH4sWDmG95BW/CvwNz0vmm7dJVtU2KlMiA==
 
+p-finally@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
+  integrity sha512-LICb2p9CB7FS+0eR1oqWnHhp0FljGLZCWBE9aix0Uye9W8LTQPwMTYVGWQWIw9RdQiDg4+epXQODwIYJtSJaow==
+
 p-limit@^2.2.0:
   version "2.3.0"
   resolved "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz"
@@ -8652,11 +8706,25 @@ p-retry@^4.5.0:
     "@types/retry" "0.12.0"
     retry "^0.13.1"
 
+p-timeout@^3.0.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/p-timeout/-/p-timeout-3.2.0.tgz#c7e17abc971d2a7962ef83626b35d635acf23dfe"
+  integrity sha512-rhIwUycgwwKcP9yTOOFK/AKsAopjjCakVqLHePO3CC6Mir1Z99xT+R63jZxAT5lFZLa2inS5h+ZS2GvR99/FBg==
+  dependencies:
+    p-finally "^1.0.0"
+
 p-try@^2.0.0:
   version "2.2.0"
   resolved "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz"
   integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
 
+p-wait-for@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/p-wait-for/-/p-wait-for-3.2.0.tgz#640429bcabf3b0dd9f492c31539c5718cb6a3f1f"
+  integrity sha512-wpgERjNkLrBiFmkMEjuZJEWKKDrNfHCKA1OhyN1wg1FrLkULbviEy6py1AyJUgZ72YWFbZ38FIpnqvVqAlDUwA==
+  dependencies:
+    p-timeout "^3.0.0"
+
 pacote@15.1.0:
   version "15.1.0"
   resolved "https://registry.npmjs.org/pacote/-/pacote-15.1.0.tgz"
@@ -9894,9 +9962,9 @@ reusify@^1.0.4:
   resolved "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz"
   integrity sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==
 
-rfdc@^1.3.0:
+rfdc@^1.2.0, rfdc@^1.3.0:
   version "1.3.0"
-  resolved "https://registry.npmjs.org/rfdc/-/rfdc-1.3.0.tgz"
+  resolved "https://registry.yarnpkg.com/rfdc/-/rfdc-1.3.0.tgz#d0b7c441ab2720d05dc4cf26e01c89631d9da08b"
   integrity sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA==
 
 rimraf@^2.2.8, rimraf@^2.5.2, rimraf@^2.6.3:
@@ -9913,6 +9981,18 @@ rimraf@^3.0.0, rimraf@^3.0.2:
   dependencies:
     glob "^7.1.3"
 
+roarr@^7.0.4:
+  version "7.15.1"
+  resolved "https://registry.yarnpkg.com/roarr/-/roarr-7.15.1.tgz#e4d93105c37b5ea7dd1200d96a3500f757ddc39f"
+  integrity sha512-0ExL9rjOXeQPvQvQo8IcV8SR2GTXmDr1FQFlY2HiAV+gdVQjaVZNOx9d4FI2RqFFsd0sNsiw2TRS/8RU9g0ZfA==
+  dependencies:
+    boolean "^3.1.4"
+    fast-json-stringify "^5.8.0"
+    fast-printf "^1.6.9"
+    globalthis "^1.0.2"
+    safe-stable-stringify "^2.4.3"
+    semver-compare "^1.0.0"
+
 rtl-css-js@^1.13.1:
   version "1.16.1"
   resolved "https://registry.npmjs.org/rtl-css-js/-/rtl-css-js-1.16.1.tgz"
@@ -9995,6 +10075,11 @@ safe-regex-test@^1.0.0:
     get-intrinsic "^1.1.3"
     is-regex "^1.1.4"
 
+safe-stable-stringify@^2.4.3:
+  version "2.4.3"
+  resolved "https://registry.yarnpkg.com/safe-stable-stringify/-/safe-stable-stringify-2.4.3.tgz#138c84b6f6edb3db5f8ef3ef7115b8f55ccbf886"
+  integrity sha512-e2bDA2WJT0wxseVd4lsDP4+3ONX6HpMXQa1ZhFQ7SU+GjvORCmShbCMltrtIDfkYhVHrOcPtj+KhmDBdPdZD1g==
+
 "safer-buffer@>= 2.1.2 < 3", "safer-buffer@>= 2.1.2 < 3.0.0", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
   version "2.1.2"
   resolved "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz"
@@ -10114,6 +10199,11 @@ selfsigned@^2.1.1:
   dependencies:
     node-forge "^1"
 
+semver-compare@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/semver-compare/-/semver-compare-1.0.0.tgz#0dee216a1c941ab37e9efb1788f6afc5ff5537fc"
+  integrity sha512-YM3/ITh2MJ5MtzaM429anh+x2jiLVjqILF4m4oyQB18W7Ggea7BfqdH/wGMK7dDiMghv/6WG7znWMwUDzJiXow==
+
 semver@7.3.8:
   version "7.3.8"
   resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.8.tgz#07a78feafb3f7b32347d725e33de7e2a2df67798"
@@ -11058,6 +11148,11 @@ type-fest@^0.21.3:
   resolved "https://registry.npmjs.org/type-fest/-/type-fest-0.21.3.tgz"
   integrity sha512-t0rzBq87m3fVcduHDUFhKmyyX+9eo6WQjZvf51Ea/M0Q7+T374Jp1aUiyUl0GKxp8M/OETVHSDvmkyPgvX+X2w==
 
+type-fest@^2.3.3:
+  version "2.19.0"
+  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-2.19.0.tgz#88068015bb33036a598b952e55e9311a60fd3a9b"
+  integrity sha512-RAH822pAdBgcNMAfWnCBU3CFZcfZ/i1eZjwFU/dsLKumyuuP3niueg2UAukXYF0E2AAoc82ZSSf9J0WQBinzHA==
+
 type-is@~1.6.18:
   version "1.6.18"
   resolved "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz"