54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
'use strict';
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var Functor = require('./functor'),
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Pledge = require('./pledge');
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var Cell = function(tuple) {
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this._ext = tuple[0];
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this._session = tuple[1];
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this._functors = {
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incoming: new Functor(this._session, 'processIncomingMessage'),
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outgoing: new Functor(this._session, 'processOutgoingMessage')
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};
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};
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Cell.prototype.pending = function(direction) {
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var functor = this._functors[direction];
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if (!functor._stopped) functor.pending += 1;
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};
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Cell.prototype.incoming = function(error, message, callback, context) {
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this._exec('incoming', error, message, callback, context);
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};
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Cell.prototype.outgoing = function(error, message, callback, context) {
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this._exec('outgoing', error, message, callback, context);
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};
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Cell.prototype.close = function() {
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this._closed = this._closed || new Pledge();
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this._doClose();
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return this._closed;
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};
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Cell.prototype._exec = function(direction, error, message, callback, context) {
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this._functors[direction].call(error, message, function(err, msg) {
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if (err) err.message = this._ext.name + ': ' + err.message;
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callback.call(context, err, msg);
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this._doClose();
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}, this);
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};
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Cell.prototype._doClose = function() {
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var fin = this._functors.incoming,
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fout = this._functors.outgoing;
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if (!this._closed || fin.pending + fout.pending !== 0) return;
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if (this._session) this._session.close();
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this._session = null;
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this._closed.done();
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};
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module.exports = Cell;
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