/
message_manager.js
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/
message_manager.js
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import {
Message
} from "./messages/message.js"
class MessageManager {
constructor(receivers) {
this.messages = [];
this.receivers = receivers;
}
schedule(message) {
this.messages.push(message);
}
handleFrame() {
var undroppedMessages = [];
this.messages.forEach(function(message) {
if (message.dropped) {
message.cleanup();
} else {
message.handleFrame();
undroppedMessages.push(message);
}
});
this.messages = undroppedMessages;
this.deliverArrivals();
}
deliverArrivals() {
if (this.messages.length == 0) {
return;
}
var inFlightMessages = [];
// Store all of the current messages in a temporary location.
// We cannot operate on the messages queue itself because
// handling the existing messages may add more.
var tmpMessages = this.messages.slice(0);
this.messages = [];
tmpMessages.forEach(function(message) {
var receiver = this.receivers[message.receiver];
if (receiver.containsMessage(message)) {
receiver.handleMessage(message);
message.cleanup();
} else {
inFlightMessages.push(message);
}
}.bind(this));
this.messages = this.messages.concat(inFlightMessages);
}
}
export {
MessageManager
}