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<li>Classes</li>
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<li >HttpError</li>
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<h3>File</h3>
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<code>src/app/_helpers/global-error-handler.ts</code>
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<p class="comment">
<h3>Description</h3>
</p>
<p class="comment">
<p>A generalized http response error.</p>
</p>
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<p class="comment">
<h3>Extends</h3>
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<code>Error</code>
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<section>
<h3 id="index">Index</h3>
<table class="table table-sm table-bordered index-table">
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<td class="col-md-4">
<h6><b>Properties</b></h6>
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<ul class="index-list">
<li>
<span class="modifier">Public</span>
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<a href="#status" >status</a>
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</li>
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</section>
<section>
<h3 id="constructor">Constructor</h3>
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<code>constructor(message: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank">string</a>, status: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/number" target="_blank">number</a>)</code>
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<div class="io-line">Defined in <a href="" data-line="16" class="link-to-prism">src/app/_helpers/global-error-handler.ts:16</a></div>
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</td>
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<td class="col-md-4">
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<div class="io-description"><p>Initialize the HttpError class.</p>
</div>
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<div>
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
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<td>Description</td>
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</tr>
</thead>
<tbody>
<tr>
<td>message</td>
<td>
<code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank" >string</a></code>
</td>
<td>
No
</td>
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<td>
<code><ul>
<li>The message given by the error.</li>
</ul>
</code>
</td>
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</tr>
<tr>
<td>status</td>
<td>
<code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/number" target="_blank" >number</a></code>
</td>
<td>
No
</td>
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<td>
<code><ul>
<li>The status code given by the error.</li>
</ul>
</code>
</td>
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</tr>
</tbody>
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</td>
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</section>
<section>
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<h3 id="inputs">
Properties
</h3>
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<tbody>
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<a name="status"></a>
<span class="name">
<span class="modifier">Public</span>
<span ><b>status</b></span>
<a href="#status"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
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<tr>
<td class="col-md-4">
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<i>Type : </i> <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/number" target="_blank" >number</a></code>
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</td>
</tr>
<tr>
<td class="col-md-4">
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<div class="io-line">Defined in <a href="" data-line="16" class="link-to-prism">src/app/_helpers/global-error-handler.ts:16</a></div>
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</td>
</tr>
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<tr>
<td class="col-md-4">
<div class="io-description"><p>The error&#39;s status code.</p>
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</div>
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</td>
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<pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import { HttpErrorResponse } from &#x27;@angular/common/http&#x27;;
import { ErrorHandler, Injectable } from &#x27;@angular/core&#x27;;
import { Router } from &#x27;@angular/router&#x27;;
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// Application imports
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import { LoggingService } from &#x27;@app/_services/logging.service&#x27;;
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/**
* A generalized http response error.
*
* @extends Error
*/
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export class HttpError extends Error {
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/** The error&#x27;s status code. */
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public status: number;
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/**
* Initialize the HttpError class.
*
* @param message - The message given by the error.
* @param status - The status code given by the error.
*/
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constructor(message: string, status: number) {
super(message);
this.status &#x3D; status;
this.name &#x3D; &#x27;HttpError&#x27;;
}
}
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/**
* Provides a hook for centralized exception handling.
*
* @extends ErrorHandler
*/
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@Injectable()
export class GlobalErrorHandler extends ErrorHandler {
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/**
* An array of sentence sections that denote warnings.
*/
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private sentencesForWarningLogging: Array&lt;string&gt; &#x3D; [];
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/**
* Initialization of the Global Error Handler.
*
* @param loggingService - A service that provides logging capabilities.
* @param router - A service that provides navigation among views and URL manipulation capabilities.
*/
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constructor(private loggingService: LoggingService, private router: Router) {
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super();
}
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/**
* Handles different types of errors.
*
* @param error - An error objects thrown when a runtime errors occurs.
*/
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handleError(error: Error): void {
this.logError(error);
const message: string &#x3D; error.message ? error.message : error.toString();
// if (error.status) {
// error &#x3D; new Error(message);
// }
const errorTraceString: string &#x3D; &#x60;Error message:\n${message}.\nStack trace: ${error.stack}&#x60;;
const isWarning: boolean &#x3D; this.isWarning(errorTraceString);
if (isWarning) {
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this.loggingService.sendWarnLevelMessage(errorTraceString, { error });
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} else {
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this.loggingService.sendErrorLevelMessage(errorTraceString, this, { error });
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}
throw error;
}
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/**
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* Checks if an error is of type warning.
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*
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* @param errorTraceString - A description of the error and it&#x27;s stack trace.
* @returns true - If the error is of type warning.
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*/
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private isWarning(errorTraceString: string): boolean {
let isWarning: boolean &#x3D; true;
if (errorTraceString.includes(&#x27;/src/app/&#x27;)) {
isWarning &#x3D; false;
}
this.sentencesForWarningLogging.forEach((whiteListSentence: string) &#x3D;&gt; {
if (errorTraceString.includes(whiteListSentence)) {
isWarning &#x3D; true;
}
});
return isWarning;
}
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/**
* Write appropriate logs according to the type of error.
*
* @param error - An error objects thrown when a runtime errors occurs.
*/
logError(error: any): void {
const route: string &#x3D; this.router.url;
if (error instanceof HttpErrorResponse) {
this.loggingService.sendErrorLevelMessage(
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&#x60;There was an HTTP error on route ${route}.\n${error.message}.\nStatus code: ${
(error as HttpErrorResponse).status
}&#x60;,
this,
{ error }
);
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} else if (error instanceof TypeError) {
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this.loggingService.sendErrorLevelMessage(
&#x60;There was a Type error on route ${route}.\n${error.message}&#x60;,
this,
{ error }
);
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} else if (error instanceof Error) {
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this.loggingService.sendErrorLevelMessage(
&#x60;There was a general error on route ${route}.\n${error.message}&#x60;,
this,
{ error }
);
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} else {
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this.loggingService.sendErrorLevelMessage(
&#x60;Nobody threw an error but something happened on route ${route}!&#x60;,
this,
{ error }
);
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}
}
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}
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export function rejectBody(error): { status: any; statusText: any } {
return {
status: error.status,
statusText: error.statusText,
};
}
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</code></pre>
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