124 lines
2.5 KiB
JavaScript
124 lines
2.5 KiB
JavaScript
// 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 { toHex } from '../util/format';
|
|
import { TransportError } from '../transport';
|
|
|
|
const AWAITING = Symbol('awaiting');
|
|
const CONFIRMED = Symbol('confirmed');
|
|
const REJECTED = Symbol('rejected');
|
|
|
|
class Transactions {
|
|
constructor () {
|
|
this.reset();
|
|
}
|
|
|
|
// should only really be needed in the constructor and tests
|
|
reset () {
|
|
this._id = 1;
|
|
this._states = {};
|
|
}
|
|
|
|
nextId () {
|
|
return toHex(this._id++);
|
|
}
|
|
|
|
add (tx) {
|
|
const id = this.nextId();
|
|
|
|
this._states[id] = {
|
|
status: AWAITING,
|
|
transaction: tx
|
|
};
|
|
|
|
return id;
|
|
}
|
|
|
|
get (id) {
|
|
const state = this._states[id];
|
|
|
|
if (!state || state.status !== AWAITING) {
|
|
return null;
|
|
}
|
|
|
|
return state.transaction;
|
|
}
|
|
|
|
hash (id) {
|
|
const state = this._states[id];
|
|
|
|
if (!state) {
|
|
return null;
|
|
}
|
|
|
|
switch (state.status) {
|
|
case REJECTED:
|
|
throw TransportError.requestRejected();
|
|
case CONFIRMED:
|
|
return state.hash;
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
|
|
confirm (id, hash) {
|
|
const state = this._states[id];
|
|
|
|
if (!state || state.status !== AWAITING) {
|
|
throw new Error('Trying to confirm an invalid transaction');
|
|
}
|
|
|
|
state.hash = hash;
|
|
state.status = CONFIRMED;
|
|
}
|
|
|
|
reject (id) {
|
|
const state = this._states[id];
|
|
|
|
if (!state) {
|
|
return false;
|
|
}
|
|
|
|
state.status = REJECTED;
|
|
|
|
return true;
|
|
}
|
|
|
|
requestsToConfirm () {
|
|
const result = [];
|
|
|
|
Object.keys(this._states).forEach((id) => {
|
|
const state = this._states[id];
|
|
|
|
if (state.status === AWAITING) {
|
|
result.push({
|
|
id,
|
|
origin: {
|
|
signer: '0x0'
|
|
},
|
|
payload: {
|
|
sendTransaction: state.transaction
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
export default new Transactions();
|