openethereum/js/packages/api/pubsub/pubsub.js

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
import Eth from './eth';
import Parity from './parity';
import Net from './net';
import { isFunction } from '../util/types';
export default class Pubsub {
constructor (provider) {
if (!provider || !isFunction(provider.subscribe)) {
throw new Error('Pubsub API needs transport with subscribe() function defined. (WebSocket)');
}
this._eth = new Eth(provider);
this._net = new Net(provider);
this._parity = new Parity(provider);
}
get net () {
return this._net;
}
get eth () {
return this._eth;
}
get parity () {
return this._parity;
}
unsubscribe (subscriptionIds) {
// subscriptions are namespace independent. Thus we can simply removeListener from any.
return this._parity.removeListener(subscriptionIds);
}
}