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500 Series Error Handling & Stack Traces
Fixes #825 - Changes the way the error middleware is delivered in server.js, moving all the logic back into errorHandling.js - Alters error logging to use console.error (probably more appropriate) instead of console.log - Changes error tests to accomodate for these alterations - Alters user-error and error hbs templates to incorporate stack traces - Adds additional styling for error pages to accomodate stack traces - Added logic to parse and deliver formatted stack traces Notes: ====== - Jslint gets in the way of the regex I've got to use to parse the stack. (It cites 'security reasons' which are not relevant in this case.) I needed to add a condition to relax it at the top of errorHandling.js - The stack trace should probably be added as a partial, but I figured it was out of scope for this PR.
This commit is contained in:
Christopher Giffard
parent
ea9c50f49e
commit
9c8b02949a
@ -77,10 +77,31 @@
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}
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}
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/* =============================================================================
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404
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============================================================================= */
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.error-404 {
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width: 300px;
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.error-stack {
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margin: 1em auto;
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padding: 2em;
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max-width: 800px;
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background-color: rgba(255,255,255,0.3);
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}
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.error-stack-list {
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list-style-type: none;
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padding: 0;
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margin: 0;
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}
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.error-stack-list li {
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display: block;
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&::before {
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color: #BBB;
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content: "↪︎";
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display: inline-block;
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font-size: 1.2em;
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margin-right: 0.5em;
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}
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}
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.error-stack-function {
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font-weight: bold;
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}
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@ -283,24 +283,8 @@ when.all([ghost.init(), helpers.loadCoreHelpers(ghost)]).then(function () {
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// 404 Handler
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server.use(errors.render404Page);
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// TODO: Handle all application errors (~500)
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// Just stubbed at this stage!
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server.use(function error500Handler(err, req, res, next) {
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if (!err || !(err instanceof Error)) {
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next();
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}
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// For the time being, just log and continue.
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errors.logError(err, "Middleware", "Ghost caught a processing error in the middleware layer.");
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next(err);
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});
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// All other errors
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if (server.get('env') === "production") {
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server.use(express.errorHandler({ dumpExceptions: false, showStack: false }));
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} else {
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server.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
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}
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// 500 Handler
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server.use(errors.render500Page);
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// ## Routing
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@ -1,3 +1,4 @@
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/*jslint regexp: true */
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var _ = require('underscore'),
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colors = require("colors"),
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fs = require('fs'),
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@ -29,23 +30,30 @@ errors = {
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},
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logError: function (err, context, help) {
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var stack = err ? err.stack : null;
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err = err.message || err || "Unknown";
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// TODO: Logging framework hookup
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// Eventually we'll have better logging which will know about envs
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if (process.env.NODE_ENV === 'development' || process.env.NODE_ENV === 'staging'
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|| process.env.NODE_ENV === 'production') {
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if ((process.env.NODE_ENV === 'development' ||
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process.env.NODE_ENV === 'staging' ||
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process.env.NODE_ENV === 'production')) {
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console.log("\nERROR:".red, err.red, err.stack || "");
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console.error("\nERROR:".red, err.red);
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if (context) {
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console.log(context);
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console.error(context);
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}
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if (help) {
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console.log(help.green);
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console.error(help.green);
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}
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// add a new line
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console.log("");
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console.error("");
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if (stack) {
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console.error(stack, "\n");
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}
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}
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},
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@ -74,17 +82,54 @@ errors = {
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},
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renderErrorPage: function (code, err, req, res, next) {
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function parseStack(stack) {
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if (typeof stack !== "string") {
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return stack;
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}
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// TODO: split out line numbers
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var stackRegex = /\s*at\s*(\w+)?\s*\(([^\)]+)\)\s*/i;
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return (
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stack
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.split(/[\r\n]+/)
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.slice(1)
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.map(function (line) {
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var parts = line.match(stackRegex);
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if (!parts) {
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return null;
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}
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return {
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"function": parts[1],
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"at": parts[2]
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};
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})
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.filter(function (line) {
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return !!line;
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})
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);
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}
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// Render the error!
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function renderErrorInt(errorView) {
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var stack = null;
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if (process.env.NODE_ENV !== "production" && err.stack) {
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stack = parseStack(err.stack);
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}
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// TODO: Attach node-polyglot
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res.render((errorView || "error"), {
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message: err.message || err,
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code: code
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code: code,
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stack: stack
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});
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}
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if (code >= 500) {
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this.logError(err, "ErrorPage");
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this.logError(err, "ErrorPage", "Ghost caught a processing error in the middleware layer.");
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}
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// Are we admin? If so, don't worry about the user template
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@ -119,6 +164,13 @@ errors = {
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render404Page: function (req, res, next) {
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var message = res.isAdmin ? "No Ghost Found" : "Page Not Found";
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this.renderErrorPage(404, message, req, res, next);
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},
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render500Page: function (err, req, res, next) {
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if (!err || !(err instanceof Error)) {
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next();
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}
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errors.renderErrorPage(500, err, req, res, next);
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}
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};
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@ -130,7 +182,8 @@ _.bindAll(
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"logAndThrowError",
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"logErrorWithRedirect",
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"renderErrorPage",
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"render404Page"
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"render404Page",
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"render500Page"
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);
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module.exports = errors;
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@ -10,3 +10,18 @@
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</section>
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</section>
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</section>
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{{#if stack}}
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<section class="error-stack">
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<h3>Stack Trace</h3>
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<p><strong>{{message}}</strong></p>
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<ul class="error-stack-list">
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{{#foreach stack}}
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<li>
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at
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{{#if function}}<em class="error-stack-function">{{function}}</em>{{/if}}
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<span class="error-stack-file">({{at}})</span>
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</li>
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{{/foreach}}
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</ul>
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</section>
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{{/if}}
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@ -25,7 +25,10 @@
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<section class="error-content error-404 js-error-container">
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<section class="error-details">
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<figure class="error-image">
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<img class="error-ghost" src="/ghost/img/404-ghost@2x.png" srcset="/ghost/img/404-ghost.png 1x, /ghost/img/404-ghost@2x.png 2x"/>
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<img
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class="error-ghost"
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src="/ghost/img/404-ghost@2x.png"
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srcset="/ghost/img/404-ghost.png 1x, /ghost/img/404-ghost@2x.png 2x"/>
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</figure>
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<section class="error-message">
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<h1 class="error-code">{{code}}</h1>
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@ -33,6 +36,21 @@
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</section>
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</section>
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</section>
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{{#if stack}}
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<section class="error-stack">
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<h3>Stack Trace</h3>
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<p><strong>{{message}}</strong></p>
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<ul class="error-stack-list">
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{{#foreach stack}}
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<li>
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at
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{{#if function}}<em class="error-stack-function">{{function}}</em>{{/if}}
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<span class="error-stack-file">({{at}})</span>
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</li>
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{{/foreach}}
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</ul>
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</section>
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{{/if}}
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</main>
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</body>
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</html>
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@ -43,7 +43,7 @@ describe("Error handling", function () {
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it("logs errors", function () {
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var err = new Error("test1"),
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logStub = sinon.stub(console, "log");
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logStub = sinon.stub(console, "error");
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// give environment a value that will console log
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process.env.NODE_ENV = "development";
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@ -75,7 +75,7 @@ describe("Error handling", function () {
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return;
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}
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},
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logStub = sinon.stub(console, "log"),
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logStub = sinon.stub(console, "error"),
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redirectStub = sinon.stub(res, "redirect");
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// give environment a value that will console log
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