Source code
Revision control
Copy as Markdown
Other Tools
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
const {
TYPES,
} = require("resource://devtools/shared/commands/resource/resource-command.js");
/**
* This collector class is dedicated to recording additional metadata necessary
* to build HAR files. The actual request data will be provided by the
* netmonitor which is already monitoring for requests.
*
* The only purpose of this class is to record additional document and network
* events, which will help to assign requests to individual pages.
*
* It should be created and destroyed by the main netmonitor data collector.
*/
class HarMetadataCollector {
#commands;
#initialURL;
#navigationRequests;
constructor(commands) {
this.#commands = commands;
}
/**
* Stop recording and clear the state.
*/
destroy() {
this.clear();
this.#commands.resourceCommand.unwatchResources([TYPES.NETWORK_EVENT], {
onAvailable: this.#onResourceAvailable,
});
}
/**
* Reset the current state.
*/
clear() {
// Keep the initial URL for requests captured before the first recorded
// navigation.
this.#initialURL = this.#commands.targetCommand.targetFront.url;
this.#navigationRequests = [];
}
/**
* Start recording additional events for HAR files building.
*/
async connect() {
this.clear();
await this.#commands.resourceCommand.watchResources([TYPES.NETWORK_EVENT], {
onAvailable: this.#onResourceAvailable,
});
}
getHarData() {
return {
initialURL: this.#initialURL,
navigationRequests: this.#navigationRequests,
};
}
#onResourceAvailable = resources => {
for (const resource of resources) {
if (
resource.resourceType === TYPES.NETWORK_EVENT &&
resource.isNavigationRequest
) {
this.#navigationRequests.push(resource);
}
}
};
}
exports.HarMetadataCollector = HarMetadataCollector;