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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";
// Each worker debugger supports only a single connection to the main thread.
// However, its theoretically possible for multiple servers to connect to the
// same worker. Consequently, each transport has a connection id, to allow
// messages from multiple connections to be multiplexed on a single channel.
/**
* A transport that uses a WorkerDebugger to send packets from the main
* thread to a worker thread.
*/
class MainThreadWorkerDebuggerTransport {
constructor(dbg, id) {
this._dbg = dbg;
this._id = id;
this._dbgListener = {
onMessage: this._onMessage.bind(this),
};
}
ready() {
this._dbg.addListener(this._dbgListener);
}
close() {
if (this._dbgListener) {
this._dbg.removeListener(this._dbgListener);
}
this._dbgListener = null;
this.hooks?.onTransportClosed();
}
send(packet) {
this._dbg.postMessage(
JSON.stringify({
type: "message",
id: this._id,
message: packet,
})
);
}
startBulkSend() {
throw new Error("Can't send bulk data from worker threads!");
}
_onMessage(message) {
const packet = JSON.parse(message);
if (packet.type !== "message" || packet.id !== this._id || !this.hooks) {
return;
}
this.hooks.onPacket(packet.message);
}
}
exports.MainThreadWorkerDebuggerTransport = MainThreadWorkerDebuggerTransport;
/**
* A transport that uses a WorkerDebuggerGlobalScope to send packets from a
* worker thread to the main thread.
*/
function WorkerThreadWorkerDebuggerTransport(scope, id) {
this._scope = scope;
this._id = id;
this._onMessage = this._onMessage.bind(this);
}
WorkerThreadWorkerDebuggerTransport.prototype = {
constructor: WorkerThreadWorkerDebuggerTransport,
ready() {
this._scope.addEventListener("message", this._onMessage);
},
close() {
this._scope.removeEventListener("message", this._onMessage);
this.hooks?.onTransportClosed();
},
send(packet) {
this._scope.postMessage(
JSON.stringify({
type: "message",
id: this._id,
message: packet,
})
);
},
startBulkSend() {
throw new Error("Can't send bulk data from worker threads!");
},
_onMessage(event) {
const packet = JSON.parse(event.data);
if (packet.type !== "message" || packet.id !== this._id) {
return;
}
if (this.hooks) {
this.hooks.onPacket(packet.message);
}
},
};
exports.WorkerThreadWorkerDebuggerTransport =
WorkerThreadWorkerDebuggerTransport;
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