{"id":87208,"date":"2020-07-05T13:42:19","date_gmt":"2020-07-05T11:42:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/sentry-udalennyj-monitoring-bagov-v-frontend-prilozheniyah-react"},"modified":"2020-07-05T13:42:19","modified_gmt":"2020-07-05T11:42:19","slug":"sentry-udalennyj-monitoring-bagov-v-frontend-prilozheniyah-react","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/sentry-udalennyj-monitoring-bagov-v-frontend-prilozheniyah-react","title":{"rendered":"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Studiem utilizarea Sentry cu React.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/6ea51ae73accae0c36e0130b830c1ca2.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Acest articol face parte dintr-o serie care \u00eencepe cu raportarea erorilor Sentry exemplificat\u0103: <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/508686\/\">Partea 1<\/a><\/noindex>. <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p><strong>Implementarea React<\/strong> <\/p>\n<p><\/p>\n<p>\u00cen primul r\u00e2nd, trebuie s\u0103 ad\u0103ug\u0103m un nou proiect Sentry pentru aceast\u0103 aplica\u021bie; de pe site-ul Sentry. \u00cen acest caz, alegem React.<\/p>\n<p><\/p>\n<p>Reimplement\u0103m cele dou\u0103 butoane, Hello \u0219i Error, \u00eentr-o aplica\u021bie React. \u00cencepem cu crearea aplica\u021biei noastre de baz\u0103:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">npx create-react-app react-app<\/code><\/pre>\n<p><\/p>\n<p>Apoi import\u0103m pachetul Sentry:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">yarn add @sentry\/browser<\/code><\/pre>\n<p><\/p>\n<p>\u0219i \u00eel ini\u021bializ\u0103m:<\/p>\n<p><\/p>\n<p>react-app \/ src \/ index.js<\/p>\n<p><\/p>\n<pre><code class=\"javascript\">...\nimport * as Sentry from '@sentry\/browser';\n\nconst RELEASE = '0.1.0';\nif (process.env.NODE_ENV === 'production') {\n  Sentry.init({\n    dsn: 'https:\/\/303c04eac89844b5bfc908ceffc6757c@sentry.io\/1289887',\n    release: RELEASE,\n  });\n}\n...<\/code><\/pre>\n<p><\/p>\n<p>Observa\u021bii:<\/p>\n<p><\/p>\n<ul>\n<li>\u00cen timpul dezvolt\u0103rii, avem alte mecanisme pentru a monitoriza problemele, cum ar fi consola, deci activ\u0103m Sentry doar pentru compil\u0103rile de produc\u021bie.<\/li>\n<\/ul>\n<p><\/p>\n<p>Apoi implement\u0103m butoanele Hello \u0219i Error \u0219i le ad\u0103ug\u0103m \u00een aplica\u021bie:<\/p>\n<p><\/p>\n<p><em>react-app \/ src \/ Hello.js<\/em><\/p>\n<p><\/p>\n<pre><code class=\"javascript\">import React, { Component } from &#039;react&#039;;\nimport * as Sentry from &#039;@sentry\/browser&#039;;\n\nexport default class Hello extends Component {\n  state = {\n    text: &#039;&#039;,\n  };\n  render() {\n    const { text } = this.state;\n    return (\n      &lt;div&gt;\n        &lt;button\n          onclick=&quot;{this.handleClick}&quot;\n        &gt;\n          Hello\n        &lt;\/button&gt;\n        &lt;div&gt;{text}&lt;\/div&gt;\n      &lt;\/div&gt;\n    )\n  }\n\n  handleClick = () =&amp;gt; {\n    this.setState({\n      text: &#039;Hello World&#039;,\n    });\n    try {\n      throw new Error(&#039;Caught&#039;);\n    } catch (err) {\n      if (process.env.NODE_ENV !== &#039;production&#039;) {\n        return;\n      }\n      Sentry.captureException(err);\n    }\n  }\n}<\/code><\/pre>\n<p><\/p>\n<p><em>react-app \/ src \/ MyError.js<\/em><\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">import React, { Component } from &#039;react&#039;;\n\nexport default class MyError extends Component {\n  render() {\n    return (\n      &lt;div&gt;\n        &lt;button\n          onclick=&quot;{this.handleClick}&quot;\n        &gt;\n          Error\n        &lt;\/button&gt;\n      &lt;\/div&gt;\n    )\n  }\n\n  handleClick = () =&amp;gt; {\n    throw new Error(&#039;Uncaught&#039;);\n  }\n}<\/code><\/pre>\n<p><\/p>\n<p><em>react-app \/ src \/ App.js<\/em><\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">...\nimport Hello from &#039;.\\\/Hello&#039;;\nimport MyError from &#039;.\\\/MyError&#039;;\n\nclass App extends Component {\n  render() {\n    return (\n      &lt;div classname=&quot;App&quot;&gt;\n        ...\n        &lt;hello \/&gt;\n        &lt;myerror \/&gt;\n      &lt;\/div&gt;\n    );\n  }\n}\n\nexport default App;<\/code><\/pre>\n<p><\/p>\n<p><strong>Problema (H\u0103r\u021bi de origine)<\/strong><\/p>\n<p><\/p>\n<p>Putem testa Sentry cu o compilare de produc\u021bie, introduc\u00e2nd:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">yarn build<\/code><\/pre>\n<p><\/p>\n<p>\u0219i din folderul build, introducem:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">npx http-server -c-1<\/code><\/pre>\n<p><\/p>\n<p>Problema cu care ne confrunt\u0103m imediat este c\u0103 \u00eenregistr\u0103rile de erori Sentry se refer\u0103 la numerele de linie din pachetul minimizat; nu este foarte util.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/e5b320f731249bad65a82e33c4e09b43.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Serviciul Sentry explic\u0103 acest lucru prin extragerea h\u0103r\u021bilor de origine pentru pachetul minimizat dup\u0103 primirea unei erori. \u00cen acest caz, ne mi\u0219c\u0103m de la localhost (inaccesibil pentru Sentry).<\/p>\n<p><\/p>\n<p><strong>Solu\u021bii (H\u0103r\u021bi de origine)<\/strong><\/p>\n<p><\/p>\n<p>Solu\u021bia acestei probleme const\u0103 \u00een a rula aplica\u021bia de pe un server web public. O simpl\u0103 op\u021biune ar fi s\u0103 folosim serviciul GitHub Pages (gratuit). Pa\u0219ii sunt de obicei urm\u0103torii:<\/p>\n<p><\/p>\n<ol>\n<li>\n<p>Copia\u021bi con\u021binutul folderului <em>build<\/em> \u00een folderul <em>docs<\/em> \u00een directorul r\u0103d\u0103cin\u0103 al repository-ului.<\/p>\n<p>\n<\/li>\n<li>\n<p>Activa\u021bi <em>GitHub Pages<\/em> \u00een repository (din GitHub) pentru a folosi folderul docs \u00een <em>master<\/em> ramura<\/p>\n<p>\n<\/li>\n<li>\n<p>Transmite\u021bi modific\u0103rile pe GitHub<\/p>\n<p>\n<\/li>\n<\/ol>\n<p><\/p>\n<p><strong>Not\u0103<\/strong>: dup\u0103 ce am realizat c\u0103 trebuie s\u0103 folosesc <em>create-create-app<\/em> func\u021bia homepage pentru a rula aplica\u021bia. A fost vorba de ad\u0103ugarea urm\u0103toarei linii \u00een package.json:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">\"homepage\": \"https:\/\/larkintuckerllc.github.io\/hello-sentry\/\"<\/code><\/pre>\n<p><\/p>\n<p>Versiunea final\u0103 a aplica\u021biei lansate este disponibil\u0103 la:<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/larkintuckerllc.github.io\/hello-sentry\/\">https:\/\/larkintuckerllc.github.io\/hello-sentry\/<\/a><\/noindex><\/p>\n<p><\/p>\n<p><strong>Ilustrarea Erorilor Capturate<\/strong><\/p>\n<p><\/p>\n<p>Haide\u021bi s\u0103 trecem prin ap\u0103sarea butonului Hello.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/1dbe7845b2e3d04933344d3d18dac01f.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Cu eroarea ap\u0103r\u00e2nd astfel:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/621f0f12eb77b7dd413d168c35c141d4.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Observa\u021bii:<\/p>\n<p><\/p>\n<ul>\n<li>Aceast\u0103 raportare a erorii nu poate fi mai clar\u0103. <strong>BRAVO<\/strong>.<\/li>\n<\/ul>\n<p><\/p>\n<p><strong>Ilustrarea Erorilor Ne\u00eenregistrate<\/strong><\/p>\n<p><\/p>\n<p>\u00cen mod similar, haide\u021bi s\u0103 trecem prin ap\u0103sarea butonului <em>Error<\/em>.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/65c07bc6db9f6b577ecb79dfd3336b38.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Cu eroarea ap\u0103r\u00e2nd astfel:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/f4d668075885bb66ce0158588bff038c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p><strong>Cea mai bun\u0103 gestionare a erorilor necontrolate (rendering)<\/strong><\/p>\n<p><\/p>\n<blockquote><p>Introducerea limitelor erorilor<\/p>\n<p>O eroare JavaScript \u00een partea interfe\u021bei utilizatorului nu ar trebui s\u0103 afecteze \u00eentregul aplicativ. Pentru a rezolva aceast\u0103 problem\u0103 pentru utilizatorii React, React 16 introduce un nou concept de \"limite de eroare\".<\/p>\n<p>Limitele erorilor sunt componente React care prind erorile JavaScript din orice parte a arborelui lor de componente copil, \u00eenregistreaz\u0103 aceste erori \u0219i afi\u0219eaz\u0103 o interfa\u021b\u0103 utilizator rezerv\u0103 \u00een locul arborelui de componente care s-a defectat. Limitele erorilor prind erorile \u00een timpul renderingului, \u00een metodele ciclului de via\u021b\u0103 \u0219i \u00een constructorii \u00eentregului arbore de sub ele.<\/p>\n<p>\u2026<\/p>\n<p>Un comportament nou pentru erorile nedetectate<\/p>\n<p>Aceast\u0103 modificare este semnificativ\u0103. \u00cencep\u00e2nd cu React 16, erorile care nu sunt prinse de nicio limit\u0103 a erorilor vor duce la demontarea \u00eentregului arbore de componente React.<\/p>\n<p>\u2014 <em>Dan Abramov \u2014<\/em> <noindex><a rel=\"nofollow\" href=\"https:\/\/reactjs.org\/blog\/2017\/07\/26\/error-handling-in-react-16.html\"><em>Gestionarea erorilor \u00een React 16<\/em><\/a><\/noindex><\/p><\/blockquote>\n<p>O clarificare important\u0103, care mi-a luat ceva timp s\u0103 o \u00een\u021beleg, este c\u0103 <strong>comportamentul men\u021bionat mai sus func\u021bioneaz\u0103 doar cu erorile generate \u00een metoda de rendere (sau, mai probabil, \u00een oricare dintre metodele ciclului de via\u021b\u0103)<\/strong>. De exemplu, utilizarea limitelor erorilor nu ar aduce niciun beneficiu cu butonul nostru <em>Error<\/em>; aceast\u0103 eroare a fost \u00een handlerul de click.<\/p>\n<p><\/p>\n<p>S\u0103 cre\u0103m un exemplu de eroare de vizualizare \u0219i apoi s\u0103 folosim limitele erorilor pentru o gestionare mai elegant\u0103 a erorii.<\/p>\n<p><\/p>\n<p><em>react-app \/ src \/ MyRenderError<\/em><\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">import React, { Component } from &#039;react&#039;;\n\nexport default class MyRenderError extends Component {\n  state = {\n    flag: false,\n  };\n  render() {\n    const { flag } = this.state;\n    return (\n      &lt;div&gt;\n        &lt;button\n          onclick=&quot;{this.handleClick}&quot;\n        &gt;\n          Eroare de redare\n        &lt;\/button&gt;\n        { flag &amp;amp;&amp;amp; &lt;div&gt;{flag.busted.bogus}&lt;\/div&gt; }\n      &lt;\/div&gt;\n    )\n  }\n\n  handleClick = () =&amp;gt; {\n    this.setState({\n      flag: true,\n    });\n  }\n}<\/code><\/pre>\n<p><\/p>\n<p>Observa\u021bie:<\/p>\n<p><\/p>\n<ul>\n<li>\n<p>C\u00e2nd ap\u0103sa\u021bi butonul, <em>React<\/em> se va afi\u0219a <em>flag.busted.bogus<\/em>, care genereaz\u0103 o eroare<\/p>\n<p>\n<\/li>\n<li>\n<p>F\u0103r\u0103 o limit\u0103 de erori, \u00eentregul arbore de componente va fi demontat<\/p>\n<p>\n<\/li>\n<\/ul>\n<p><\/p>\n<p>Apoi scriem codul nostru pentru limita erorii (folose\u0219te noua metod\u0103 de ciclul de via\u021b\u0103 <em>componentDidCatch<\/em>); acesta este, practic, un exemplu dat \u00een articolul lui Dan Abramov:<\/p>\n<p><\/p>\n<p><em>react-app \/ src \/ ErrorBoundary.js<\/em><\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">import React, { Component } from &#039;react&#039;;\nimport * as Sentry from &#039;@sentry\/browser&#039;;\n\nexport default class ErrorBoundary extends Component {\n  constructor(props) {\n    super(props);\n    this.state = { hasError: false };\n  }\n\n  componentDidCatch(err, info) {\n    this.setState({ hasError: true });\n    Sentry.captureException(err);\n  }\n\n  render() {\n    if (this.state.hasError) {\n      return &lt;h1&gt;Ceva a mers prost.&lt;\/h1&gt;;\n    }\n    return this.props.children;\n  }\n}<\/code><\/pre>\n<p><\/p>\n<p>\u00cen cele din urm\u0103, folosim acest component:<\/p>\n<p><\/p>\n<p><em>react-app \/ src \/ App.js<\/em><\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">...\nimport MyRenderError from &#039;.\/MyRenderError&#039;;\n\nclass App extends Component {\n  render() {\n    return (\n      &lt;errorboundary&gt;\n        &lt;div classname=&quot;App&quot;&gt;\n          ...\n        &lt;\/div&gt;\n      &lt;\/errorboundary&gt;\n    );\n  }\n}\n...<\/code><\/pre>\n<p><\/p>\n<p>\u00cen acest fel, ap\u0103sarea butonului Render Error afi\u0219eaz\u0103 o interfa\u021b\u0103 utilizator rezerv\u0103 \u0219i raporteaz\u0103 eroarea Sentry.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/e410ee6355f5d423281fe278b638a09d.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Sentry monitorizare la distan\u021b\u0103 a erorilor \u00een aplica\u021biile front-end React\" src=\"\/wp-content\/uploads\/2020\/07\/58183f6f6aef124e8d14acaaf7e0d4fe.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p><strong>\u00cencheiere<\/strong><\/p>\n<p><\/p>\n<p>Sper c\u0103 \u021bi-a fost de ajutor.<\/p>\n<p><\/p>\n<p>P.S. <noindex><a rel=\"nofollow\" href=\"https:\/\/medium.com\/@johntucker_48673\/sentry-error-reporting-by-example-part-2-cd7b2f653be4\">Link c\u0103tre original<\/a><\/noindex> <\/p>\n<p><\/p>\n<p>P.S. Chat-ul Telegram despre Sentry <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/sentry_ru\">https:\/\/t.me\/sentry_ru<\/a><\/noindex><\/p>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/509362\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041c\u044b \u0438\u0437\u0443\u0447\u0430\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 Sentry \u0441 React. \u042d\u0442\u0430 \u0441\u0442\u0430\u0442\u044c\u044f \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0447\u0430\u0441\u0442\u044c\u044e \u0441\u0435\u0440\u0438\u0438, \u043d\u0430\u0447\u0438\u043d\u0430\u044e\u0449\u0435\u0439\u0441\u044f \u0441 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f \u043e\u0431 \u043e\u0448\u0438\u0431\u043a\u0430\u0445 Sentry \u043d\u0430 \u043f\u0440\u0438\u043c\u0435\u0440\u0435: \u0427\u0430\u0441\u0442\u044c 1. \u0420\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f React \u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u043d\u0430\u043c \u043d\u0443\u0436\u043d\u043e \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u043d\u043e\u0432\u044b\u0439 \u043f\u0440\u043e\u0435\u043a\u0442 Sentry \u0434\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f; \u0441 \u0441\u0430\u0439\u0442\u0430 Sentry. \u0412 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043c\u044b \u0432\u044b\u0431\u0438\u0440\u0430\u0435\u043c React. \u041c\u044b \u0432\u043d\u043e\u0432\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u043c \u043d\u0430\u0448\u0438 \u0434\u0432\u0435 \u043a\u043d\u043e\u043f\u043a\u0438, Hello \u0438 Error, \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0441 React. \u041c\u044b 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