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/* 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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/**
* The ObjectCommand helps inspecting and managing lifecycle
* of all inspected JavaScript objects.
*/
class ObjectCommand {
constructor({ commands, descriptorFront, watcherFront }) {
this.#commands = commands;
}
#commands = null;
/**
* Release a set of object actors all at once.
*
* @param {Array<ObjectFront>} frontsToRelease
* List of fronts for the object to release.
*/
async releaseObjects(frontsToRelease) {
// @backward-compat { version 123 } A new Objects Manager front has a new "releaseActors" method.
// Only supportsReleaseActors=true codepath can be kept once 123 is the release channel.
const { supportsReleaseActors } = this.#commands.client.mainRoot.traits;
// First group all object fronts per target
const actorsPerTarget = new Map();
const promises = [];
for (const frontToRelease of frontsToRelease) {
const { targetFront } = frontToRelease;
// If the front is already destroyed, its target front will be nullified.
if (!targetFront) {
continue;
}
let actorIDsToRemove = actorsPerTarget.get(targetFront);
if (!actorIDsToRemove) {
actorIDsToRemove = [];
actorsPerTarget.set(targetFront, actorIDsToRemove);
}
if (supportsReleaseActors) {
actorIDsToRemove.push(frontToRelease.actorID);
frontToRelease.destroy();
} else {
promises.push(frontToRelease.release());
}
}
if (supportsReleaseActors) {
// Then release all fronts by bulk per target
for (const [targetFront, actorIDs] of actorsPerTarget) {
const objectsManagerFront = await targetFront.getFront("objects-manager");
promises.push(objectsManagerFront.releaseObjects(actorIDs));
}
}
await Promise.all(promises);
}
}
module.exports = ObjectCommand;
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