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<div class="content interceptor">
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<ol class="breadcrumb">
<li>Interceptors</li>
<li>LoggingInterceptor</li>
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<p class="comment">
<h3>File</h3>
</p>
<p class="comment">
<code>src/app/_interceptors/logging.interceptor.ts</code>
</p>
<p class="comment">
<h3>Description</h3>
</p>
<p class="comment">
<p>Intercepts and handles of events from outgoing HTTP request. </p>
</p>
<section>
<h3 id="index">Index</h3>
<table class="table table-sm table-bordered index-table">
<tbody>
<tr>
<td class="col-md-4">
<h6><b>Methods</b></h6>
</td>
</tr>
<tr>
<td class="col-md-4">
<ul class="index-list">
<li>
<a href="#intercept">intercept</a>
</li>
</ul>
</td>
</tr>
</tbody>
</table>
</section>
<section>
<h3 id="constructor">Constructor</h3>
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<tr>
<td class="col-md-4">
<code>constructor(loggingService: <a href="../injectables/LoggingService.html">LoggingService</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="20" class="link-to-prism">src/app/_interceptors/logging.interceptor.ts:20</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description"><p>Initialization of the logging interceptor.</p>
</div>
<div>
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
<td>Description</td>
</tr>
</thead>
<tbody>
<tr>
<td>loggingService</td>
<td>
<code><a href="../injectables/LoggingService.html" target="_self" >LoggingService</a></code>
</td>
<td>
No
</td>
<td>
<code><ul>
<li>A service that provides logging capabilities.</li>
</ul>
</code>
</td>
</tr>
</tbody>
</table>
</div>
</td>
</tr>
</tbody>
</table>
</section>
<section>
<h3 id="methods">
Methods
</h3>
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<a name="intercept"></a>
<span class="name">
<b>
intercept
</b>
<a href="#intercept"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<code>intercept(request: HttpRequest<unknown>, next: <a href="https://angular.io/api/common/http/HttpHandler" target="_blank">HttpHandler</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="35"
class="link-to-prism">src/app/_interceptors/logging.interceptor.ts:35</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description"><p>Intercepts HTTP requests.</p>
</div>
<div class="io-description">
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
<td>Description</td>
</tr>
</thead>
<tbody>
<tr>
<td>request</td>
<td>
<code>HttpRequest<unknown></code>
</td>
<td>
No
</td>
<td>
<ul>
<li>An outgoing HTTP request with an optional typed body.</li>
</ul>
</td>
</tr>
<tr>
<td>next</td>
<td>
<code><a href="https://angular.io/api/common/http/HttpHandler" target="_blank" >HttpHandler</a></code>
</td>
<td>
No
</td>
<td>
<ul>
<li>The next HTTP handler or the outgoing request dispatcher.</li>
</ul>
</td>
</tr>
</tbody>
</table>
</div>
<div>
</div>
<div class="io-description">
<b>Returns : </b> <code>Observable<HttpEvent<unknown>></code>
</div>
<div class="io-description">
<p>The forwarded request.</p>
</div>
</td>
</tr>
</tbody>
</table>
</section>
</div>
<div class="tab-pane fade tab-source-code" id="c-source">
<pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import {
HttpEvent,
HttpHandler,
HttpInterceptor,
HttpRequest,
HttpResponse,
} from '@angular/common/http';
import { Injectable } from '@angular/core';
// Third party imports
import { Observable } from 'rxjs';
import { finalize, tap } from 'rxjs/operators';
// Application imports
import { LoggingService } from '@app/_services/logging.service';
/** Intercepts and handles of events from outgoing HTTP request. */
@Injectable()
export class LoggingInterceptor implements HttpInterceptor {
/**
* Initialization of the logging interceptor.
*
* @param loggingService - A service that provides logging capabilities.
*/
constructor(private loggingService: LoggingService) {}
/**
* Intercepts HTTP requests.
*
* @param request - An outgoing HTTP request with an optional typed body.
* @param next - The next HTTP handler or the outgoing request dispatcher.
* @returns The forwarded request.
*/
intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
return next.handle(request);
// this.loggingService.sendInfoLevelMessage(request);
// const startTime: number = Date.now();
// let status: string;
//
// return next.handle(request).pipe(tap(event => {
// status = '';
// if (event instanceof HttpResponse) {
// status = 'succeeded';
// }
// }, error => status = 'failed'),
// finalize(() => {
// const elapsedTime: number = Date.now() - startTime;
// const message: string = `${request.method} request for ${request.urlWithParams} ${status} in ${elapsedTime} ms`;
// this.loggingService.sendInfoLevelMessage(message);
// }));
}
}
</code></pre>
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