669 lines
18 KiB
JavaScript
669 lines
18 KiB
JavaScript
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var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest;
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var utils = (function() {
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var convert = require('ethers-utils/convert.js');
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return {
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defineProperty: require('ethers-utils/properties.js').defineProperty,
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getAddress: require('ethers-utils/address.js').getAddress,
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bigNumberify: require('ethers-utils/bignumber.js').bigNumberify,
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arrayify: convert.arrayify,
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hexlify: convert.hexlify,
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isHexString: convert.isHexString,
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}
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})();
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function check(format, object) {
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var result = {};
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for (var key in format) {
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try {
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value = format[key](object[key]);
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if (value !== undefined) { result[key] = value; }
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} catch (error) {
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console.log(error, key, object);
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error.checkKey = key;
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error.checkValue = object[key];
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throw error;
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}
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}
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return result;
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}
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function allowNull(check, nullValue) {
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return (function(value) {
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if (value == null) { return nullValue; }
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return check(value);
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});
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}
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function allowFalsish(check, replaceValue) {
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return (function(value) {
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if (!value) { return replaceValue; }
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return check(value);
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});
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}
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function arrayOf(check) {
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return (function(array) {
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if (!Array.isArray(array)) { throw new Error('not an array'); }
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var result = [];
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array.forEach(function(value) {
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result.push(check(value));
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});
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return result;
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});
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}
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function checkHash(hash) {
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if (!utils.isHexString(hash) || hash.length !== 66) {
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throw new Error('invalid hash');
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}
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return hash;
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}
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function checkNumber(number) {
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return utils.bigNumberify(number).toNumber();
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}
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function checkString(string) {
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if (typeof(string) !== 'string') { throw new Error('invalid string'); }
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return string;
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}
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function checkBlockTag(blockTag) {
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if (blockTag == null) { return 'latest'; }
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if (utils.isHexString(blockTag)) { return blockTag; }
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if (blockTag === 'earliest') { blockTag = 0; }
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if (typeof(blockTag) === 'number') {
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return utils.hexlify(blockTag);
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}
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if (blockTag === 'latest' || blockTag === 'pending') {
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return blockTag;
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}
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throw new Error('invalid blockTag');
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}
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var formatBlock = {
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hash: checkHash,
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parentHash: checkHash,
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number: checkNumber,
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timestamp: checkNumber,
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nonce: utils.hexlify,
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difficulty: checkNumber,
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gasLimit: utils.bigNumberify,
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gasUsed: utils.bigNumberify,
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author: utils.getAddress,
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extraData: utils.hexlify,
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//transactions: allowNull(arrayOf(checkTransaction)),
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transactions: allowNull(arrayOf(checkHash)),
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//transactionRoot: checkHash,
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//stateRoot: checkHash,
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//sha3Uncles: checkHash,
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//logsBloom: utils.hexlify,
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};
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function checkBlock(block) {
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return check(formatBlock, block);
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}
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var formatTransaction = {
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hash: checkHash,
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blockHash: allowNull(checkHash, null),
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blockNumber: allowNull(checkNumber, null),
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transactionIndex: allowNull(checkNumber, null),
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from: utils.getAddress,
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gasPrice: utils.bigNumberify,
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gasLimit: utils.bigNumberify,
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to: allowNull(utils.getAddress, null),
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value: utils.bigNumberify,
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nonce: checkNumber,
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data: utils.hexlify,
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r: checkHash,
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s: checkHash,
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v: checkNumber,
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creates: allowNull(utils.getAddress, null),
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};
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function checkTransaction(transaction) {
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if (transaction.gas != null && transaction.gasLimit == null) {
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transaction.gasLimit = transaction.gas;
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}
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if (transaction.input != null && transaction.data == null) {
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transaction.data = transaction.input;
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}
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return check(formatTransaction, transaction);
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}
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var formatTransactionReceiptLog = {
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transactionLogIndex: checkNumber,
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blockNumber: checkNumber,
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transactionHash: checkHash,
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address: utils.getAddress,
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type: checkString,
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topics: arrayOf(checkHash),
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transactionIndex: checkNumber,
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data: utils.hexlify,
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logIndex: checkNumber,
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blockHash: checkHash,
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};
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function checkTransactionReceiptLog(log) {
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return check(formatTransactionReceiptLog, log);
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}
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var formatTransactionReceipt = {
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contractAddress: allowNull(utils.getAddress, null),
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transactionIndex: checkNumber,
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root: checkHash,
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gasUsed: utils.bigNumberify,
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logsBloom: utils.hexlify,
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blockHash: checkHash,
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transactionHash: checkHash,
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logs: arrayOf(checkTransactionReceiptLog),
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blockNumber: checkNumber,
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cumulativeGasUsed: utils.bigNumberify,
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};
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function checkTransactionReceipt(transactionReceipt) {
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return check(formatTransactionReceipt, transactionReceipt);
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}
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function checkTopics(topics) {
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if (Array.isArray(topics)) {
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topics.forEach(function(topic) {
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checkTopics(topic);
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});
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} else if (topics != null) {
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checkHash(topics);
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}
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return topics;
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}
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var formatFilter = {
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fromBlock: allowNull(checkBlockTag, undefined),
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toBlock: allowNull(checkBlockTag, undefined),
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address: allowNull(utils.getAddress, undefined),
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topics: allowNull(checkTopics, undefined),
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};
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function checkFilter(filter) {
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return check(formatFilter, filter);
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}
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var formatLog = {
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blockNumber: checkNumber,
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transactionIndex: checkNumber,
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address: utils.getAddress,
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data: allowFalsish(utils.hexlify, '0x'),
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topics: arrayOf(checkHash),
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transactionHash: checkHash,
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logIndex: checkNumber,
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}
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function checkLog(log) {
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return check(formatLog, log);
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}
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function Provider(testnet, chainId) {
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if (!(this instanceof Provider)) { throw new Error('missing new'); }
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testnet = !!testnet;
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if (chainId == null) {
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chainId = (testnet ? Provider.chainId.ropsten: Provider.chainId.homestead);
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}
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if (typeof(chainId) !== 'number') { throw new Error('invalid chainId'); }
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utils.defineProperty(this, 'testnet', testnet);
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utils.defineProperty(this, 'chainId', chainId);
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var events = {};
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utils.defineProperty(this, '_events', events);
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var self = this;
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var lastBlockNumber = null;
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var poller = setInterval(function() {
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self.getBlockNumber().then(function(blockNumber) {
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// If the block hasn't changed, meh.
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if (blockNumber === lastBlockNumber) { return; }
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if (lastBlockNumber === null) { lastBlockNumber = blockNumber - 1; }
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// Notify all listener for each block that has passed
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for (var i = lastBlockNumber + 1; i <= blockNumber; i++) {
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self.emit('block', i);
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}
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lastBlockNumber = blockNumber;
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// Find all transaction hashes we are waiting on
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for (var eventName in events) {
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if (utils.isHexString(eventName) && eventName.length === 66) {
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eventName = getString(eventName);
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self.getTransaction(eventName).then(function(transaction) {
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if (!transaction.blockNumber) { return; }
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self.emit(eventName, transaction);
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});
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}
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}
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});
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self.doPoll();
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}, 4000);
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if (poller.unref) { poller.unref(); }
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}
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utils.defineProperty(Provider, 'chainId', {
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homestead: 1,
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morden: 2,
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ropsten: 3,
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});
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utils.defineProperty(Provider, 'isProvider', function(object) {
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return (object instanceof Provider);
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});
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utils.defineProperty(Provider, 'fetchJSON', function(url, json, processFunc) {
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return new Promise(function(resolve, reject) {
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var request = new XMLHttpRequest();
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if (json) {
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request.open('POST', url, true);
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request.setRequestHeader('Content-Type','application/json');
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} else {
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request.open('GET', url, true);
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}
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request.onreadystatechange = function() {
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if (request.readyState !== 4) { return; }
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if (request.status != 200) {
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var error = new Error('invalid response');
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error.statusCode = request.statusCode;
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reject(error);
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return;
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}
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var result = request.responseText;
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try {
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result = JSON.parse(result);
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} catch (error) {
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var jsonError = new Error('invalid json response');
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jsonError.orginialError = error;
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jsonError.responseText = request.responseText;
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reject(jsonError);
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return;
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}
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if (processFunc) {
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try {
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result = processFunc(result);
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} catch (error) {
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error.responseText = request.responseText;
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reject(error);
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return;
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}
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}
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resolve(result);
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};
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request.onerror = function(error) {
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reject(error);
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}
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try {
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if (json) {
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request.send(json);
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} else {
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request.send();
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}
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} catch (error) {
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var connectionError = new Error('connection error');
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connectionError.error = error;
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reject(connectionError);
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}
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});
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});
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utils.defineProperty(Provider.prototype, 'waitForTransaction', function(transactionHash, timeout) {
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return new Promise(function() {
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var done = false;
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var timer = null;
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function complete(transaction) {
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if (done) { return; }
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done = true;
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if (timer) {
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clearTimeout(timer);
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timer = null;
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}
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resolve(transaction);
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}
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function checkTransaction(transaction) {
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}
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if (typeof(timeout) === 'number' && timeout > 0) {
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timer = setTimeout(function() {
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done = true;
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timer = null;
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reject(new Error('timeout'));
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}, timeout);
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}
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});
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});
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utils.defineProperty(Provider.prototype, 'getBlockNumber', function() {
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try {
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return this.perform('getBlockNumber').then(function(result) {
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var value = parseInt(result);
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if (value != result) { throw new Error('invalid response'); }
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return value;
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'getGasPrice', function() {
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try {
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return this.perform('getGasPrice').then(function(result) {
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return utils.bigNumberify(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'getBalance', function(address, blockTag) {
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try {
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var params = {address: utils.getAddress(address), blockTag: checkBlockTag(blockTag)};
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return this.perform('getBalance', params).then(function(result) {
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return utils.bigNumberify(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'getTransactionCount', function(address, blockTag) {
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try {
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var params = {address: utils.getAddress(address), blockTag: checkBlockTag(blockTag)};
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return this.perform('getTransactionCount', params).then(function(result) {
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var value = parseInt(result);
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if (value != result) { throw new Error('invalid response'); }
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return value;
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'getCode', function(address, blockTag) {
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try {
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var params = {address: utils.getAddress(address), blockTag: checkBlockTag(blockTag)};
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return this.perform('getCode', params).then(function(result) {
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return utils.hexlify(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'getStorageAt', function(address, position, blockTag) {
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try {
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var params = {
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address: utils.getAddress(address),
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position: utils.hexlify(position),
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blockTag: checkBlockTag(blockTag)
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};
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return this.perform('getStorageAt', params).then(function(result) {
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return utils.hexlify(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'sendTransaction', function(signedTransaction) {
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try {
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var params = {signedTransaction: utils.hexlify(signedTransaction)};
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return this.perform('sendTransaction', params).then(function(result) {
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result = utils.hexlify(result);
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if (result.length !== 66) { throw new Error('invalid response'); }
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return result;
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'call', function(transaction) {
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try {
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var params = {transaction: checkTransaction(transaction)};
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return this.perform('call', params).then(function(result) {
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return utils.hexlify(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'estimateGas', function(transaction) {
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try {
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var params = {transaction: checkTransaction(transaction)};
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return this.perform('call', params).then(function(result) {
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return utils.bigNumberify(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'getBlock', function(blockHashOrBlockTag) {
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try {
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var blockHash = utils.hexlify(blockHashOrBlockTag);
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if (blockHash.length === 66) {
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return this.perform('getBlock', {blockHash: blockHash}).then(function(block) {
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return checkBlock(block);
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});
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}
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} catch (error) {
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console.log('DEBUG', error);
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}
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try {
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var blockTag = checkBlockTag(blockHashOrBlockTag);
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return this.perform('getBlock', {blockTag: blockTag}).then(function(block) {
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return checkBlock(block);
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});
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} catch (error) {
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console.log('DEBUG', error);
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}
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return Promise.reject(new Error('invalid block hash or block tag'));
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});
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utils.defineProperty(Provider.prototype, 'getTransaction', function(transactionHash) {
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try {
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var params = {transactionHash: checkHash(transactionHash)};
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return this.perform('getTransaction', params).then(function(result) {
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return checkTransaction(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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utils.defineProperty(Provider.prototype, 'getTransactionReceipt', function(transactionHash) {
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try {
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var params = {transactionHash: checkHash(transactionHash)};
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return this.perform('getTransactionReceipt', params).then(function(result) {
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return checkTransactionReceipt(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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|
|
utils.defineProperty(Provider.prototype, 'getLogs', function(filter) {
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try {
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var params = {filter: checkFilter(filter)};
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return this.perform('getLogs', params).then(function(result) {
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return arrayOf(checkLog)(result);
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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|
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utils.defineProperty(Provider.prototype, 'getEtherPrice', function() {
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try {
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return this.perform('getEtherPrice', {}).then(function(result) {
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// @TODO: Check valid float
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return result;
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});
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} catch (error) {
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return Promise.reject(error);
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}
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});
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|
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utils.defineProperty(Provider.prototype, 'doPoll', function() {
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});
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|
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utils.defineProperty(Provider.prototype, 'perform', function(method, params) {
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return Promise.reject(new Error('not implemented - ' + method));
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});
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|
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function getString(object) {
|
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if (Array.isArray(object)) {
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var result = [];
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for (var i = 0; i < object.length; i++) {
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result.push(getString(object[i]));
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}
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return '[' + result.join(',') + ']';
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|
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} else if (typeof(object) === 'string') {
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return object;
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|
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} else if (object == null) {
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return 'null';
|
|
}
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|
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throw new Error('invalid topic');
|
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}
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utils.defineProperty(Provider.prototype, 'on', function(eventName, listener) {
|
|
var key = getString(eventName);
|
|
if (!this._events[key]) { this._events[eventName] = []; }
|
|
this._events[key].push({eventName: eventName, listener: listener, type: 'on'});
|
|
});
|
|
|
|
utils.defineProperty(Provider.prototype, 'once', function(eventName, listener) {
|
|
var key = getString(eventName);
|
|
if (!this._events[key]) { this._events[eventName] = []; }
|
|
this._events[key].push({listener: listener, type: 'once'});
|
|
});
|
|
|
|
utils.defineProperty(Provider.prototype, 'emit', function(eventName) {
|
|
var key = getString(eventName);
|
|
|
|
var args = Array.prototype.slice.call(arguments, 1);
|
|
var listeners = this._events[key];
|
|
if (!listeners) { return; }
|
|
|
|
for (var i = 0; i < listeners.length; i++) {
|
|
var listener = listeners[i];
|
|
|
|
if (listener.type === 'once') {
|
|
delete listeners[i];
|
|
i--;
|
|
}
|
|
|
|
try {
|
|
listener.listener.apply(this, args);
|
|
} catch (error) {
|
|
console.log('Event Listener Error: ' + error.message);
|
|
}
|
|
}
|
|
console.log('LLL', listeners);
|
|
if (listeners.length === 0) { delete this._events[key]; }
|
|
});
|
|
|
|
utils.defineProperty(Provider.prototype, 'listenerCount', function(eventName) {
|
|
var listeners = this._events[getString(eventName)];
|
|
if (!listeners) { return 0; }
|
|
return listeners.length;
|
|
});
|
|
|
|
utils.defineProperty(Provider.prototype, 'listeners', function(eventName) {
|
|
var listeners = this._events[getString(eventName)];
|
|
if (!listeners) { return 0; }
|
|
var result = [];
|
|
for (var i = 0; i < listeners.length; i++) {
|
|
result.push(lisrteners[i].listener);
|
|
}
|
|
return result;
|
|
});
|
|
|
|
utils.defineProperty(Provider.prototype, 'removeAllListeners', function(eventName) {
|
|
delete this._events[getString(eventName)];
|
|
});
|
|
|
|
utils.defineProperty(Provider.prototype, 'removeListener', function(eventName, listener) {
|
|
var listeners = this._events[getString(eventName)];
|
|
if (!listeners) { return 0; }
|
|
for (var i = 0; i < listeners.length; i++) {
|
|
if (listeners[i].listener === listener) {
|
|
delete listeners[i];
|
|
return;
|
|
}
|
|
}
|
|
});
|
|
|
|
module.exports = Provider;
|