Ghost/core/server/middleware/error-handler.js
Katharina Irrgang 1882278b5b 🎨 configurable logging with bunyan (#7431)
- 🛠  add bunyan and prettyjson, remove morgan

-   add logging module
  - GhostLogger class that handles setup of bunyan
  - PrettyStream for stdout

-   config for logging
  - @TODO: testing level fatal?

-   log each request via GhostLogger (express middleware)
  - @TODO: add errors to output

- 🔥  remove errors.updateActiveTheme
  - we can read the value from config

- 🔥  remove 15 helper functions in core/server/errors/index.js
  - all these functions get replaced by modules:
    1. logging
    2. error middleware handling for html/json
    3. error creation (which will be part of PR #7477)

-   add express error handler for html/json
  - one true error handler for express responses
  - contains still some TODO's, but they are not high priority for first implementation/integration
  - this middleware only takes responsibility of either rendering html responses or return json error responses

- 🎨  use new express error handler in middleware/index
  - 404 and 500 handling

- 🎨  return error instead of error message in permissions/index.js
  - the rule for error handling should be: if you call a unit, this unit should return a custom Ghost error

- 🎨  wrap serve static module
  - rule: if you call a module/unit, you should always wrap this error
  - it's always the same rule
  - so the caller never has to worry about what comes back
  - it's always a clear error instance
  - in this case: we return our notfounderror if serve static does not find the resource
  - this avoid having checks everywhere

- 🎨  replace usages of errors/index.js functions and adapt tests
  - use logging.error, logging.warn
  - make tests green
  - remove some usages of logging and throwing api errors -> because when a request is involved, logging happens automatically

- 🐛  return errorDetails to Ghost-Admin
  - errorDetails is used for Theme error handling

- 🎨  use 500er error for theme is missing error in theme-handler

- 🎨  extend file rotation to 1w
2016-10-04 16:33:43 +01:00

111 lines
3.4 KiB
JavaScript

var _ = require('lodash'),
path = require('path'),
hbs = require('express-hbs'),
config = require('../config'),
i18n = require('../i18n'),
_private = {};
_private.parseStack = function (stack) {
if (!_.isString(stack)) {
return stack;
}
// TODO: split out line numbers
var stackRegex = /\s*at\s*(\w+)?\s*\(([^\)]+)\)\s*/i;
return (
stack
.split(/[\r\n]+/)
.slice(1)
.map(function (line) {
var parts = line.match(stackRegex);
if (!parts) {
return null;
}
return {
function: parts[1],
at: parts[2]
};
})
.filter(function (line) {
return !!line;
})
);
};
_private.handleHTMLResponse = function handleHTMLResponse(err, req, res) {
return function handleHTMLResponse() {
var availableTheme = config.get('paths').availableThemes[req.app.get('activeTheme')] || {},
defaultTemplate = availableTheme['error.hbs'] ||
path.resolve(config.get('paths').adminViews, 'user-error.hbs') ||
'error';
res.render(defaultTemplate, {
message: err.message,
code: err.statusCode,
stack: _private.parseStack(err.stack)
}, function renderResponse(err, html) {
if (!err) {
return res.send(html);
}
// And then try to explain things to the user...
// Cheat and output the error using handlebars escapeExpression
return res.status(500).send(
'<h1>' + i18n.t('errors.errors.oopsErrorTemplateHasError') + '</h1>' +
'<p>' + i18n.t('errors.errors.encounteredError') + '</p>' +
'<pre>' + hbs.handlebars.Utils.escapeExpression(err.message || err) + '</pre>' +
'<br ><p>' + i18n.t('errors.errors.whilstTryingToRender') + '</p>' +
err.statusCode + ' ' + '<pre>' + hbs.handlebars.Utils.escapeExpression(err.message || err) + '</pre>'
);
});
};
};
/**
* @TODO: jsonapi errors format
*/
_private.handleJSONResponse = function handleJSONResponse(err, req, res) {
return function handleJSONResponse() {
res.json({
errors: [{
message: err.message,
errorType: err.errorType,
errorDetails: err.errorDetails
}]
});
};
};
/**
* @TODO: test uncaught exception (wrap into custom error!)
* @TODO: support multiple errors
* @TODO: decouple req.err
*/
module.exports = function errorHandler(err, req, res, next) {
if (_.isArray(err)) {
err = err[0];
}
req.err = err;
res.statusCode = err.statusCode;
// never cache errors
res.set({
'Cache-Control': 'no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0'
});
// @TODO: does this resolves all use cases?
if (!req.headers.accept && !req.headers.hasOwnProperty('content-type')) {
req.headers.accept = 'text/html';
}
// jscs:disable
res.format({
json: _private.handleJSONResponse(err, req, res, next),
html: _private.handleHTMLResponse(err, req, res, next),
'default': _private.handleHTMLResponse(err, req, res, next)
});
};