51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
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let async = require('async');
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let apiInterfaces = require('./apiInterfaces.js')(config.daemon, config.wallet, config.api);
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let lastHash;
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let observerConfig = config.chainObserver || config.daemon;
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let logSystem = 'chainObserver';
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let blockData = JSON.stringify({
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id: "0",
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jsonrpc: "2.0",
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method: 'getlastblockheader',
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params: {}
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});
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require('./exceptionWriter.js')(logSystem);
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function runInterval () {
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async.waterfall([
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function (callback) {
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apiInterfaces.jsonHttpRequest(observerConfig.host, observerConfig.port, blockData, function (err, res) {
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if (err) {
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log('error', logSystem, '%s error from chain observer', [config.coin]);
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setTimeout(runInterval, 3000);
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return;
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}
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if (res && res.result && res.result.status === "OK" && res.result.hasOwnProperty('block_header')) {
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let blockHeader = res.result.block_header;
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let hash = blockHeader.hash.toString('hex');
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if (!lastHash || lastHash !== hash) {
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lastHash = hash;
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log('info', logSystem, '%s observed new chain tip %s at height %d', [config.coin, hash, blockHeader.height]);
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process.send({
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type: 'ChainState',
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block_header: blockHeader
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});
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}
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callback(null);
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return;
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}
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log('error', logSystem, 'bad response from chain observer');
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setTimeout(runInterval, 3000);
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});
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}
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], function () {
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setTimeout(function () {
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runInterval();
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}, observerConfig.refreshInterval || config.poolServer.blockRefreshInterval);
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});
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}
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runInterval();
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