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Allow multiple instances of the pool to share the same redis #56

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52 changes: 37 additions & 15 deletions lib/shareProcessor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -87,33 +87,55 @@ var ShareProcessor = module.exports = function ShareProcessor(config, logger){
return fromGroup + ':' + toGroup + ':shares:' + blockHash;
}

this.shareCacheKey = function(fromGroup, toGroup){
return fromGroup + ':' + toGroup + ':sharecache';
}

var pendingBlocksKey = 'pendingBlocks';
var foundBlocksKey = 'foundBlocks';
var hashrateKey = 'hashrate';
var balancesKey = 'balances';

this._handleShare = function(share){
var redisTx = _this.redisClient.multi();
var currentMs = Date.now();
var fromGroup = share.job.fromGroup;
var toGroup = share.job.toGroup;
var blockHash = share.blockHash;
var currentRound = _this.currentRoundKey(fromGroup, toGroup);
redisTx.hincrbyfloat(currentRound, share.workerAddress, share.difficulty);
var cacheKey = _this.shareCacheKey(fromGroup, toGroup);

_this.redisClient.sadd(cacheKey, blockHash, function(error, result){
if (error){
logger.error('Check share duplicated failed, error: ' + error);
callback(error);
return;
}

if (result === 0){
logger.error('Ignore duplicated share');
callback('Duplicated share');
return;
}

var currentTs = Math.floor(currentMs / 1000);
redisTx.zadd(hashrateKey, currentTs, [fromGroup, toGroup, share.worker, share.difficulty, currentMs].join(':'));
var redisTx = _this.redisClient.multi();
var currentMs = Date.now();
redisTx.hincrbyfloat(currentRound, share.workerAddress, share.difficulty);

if (share.foundBlock){
var blockHash = share.blockHash;
var newKey = _this.roundKey(fromGroup, toGroup, blockHash);
var blockWithTs = blockHash + ':' + currentMs.toString();
var currentTs = Math.floor(currentMs / 1000);
redisTx.zadd(hashrateKey, currentTs, [fromGroup, toGroup, share.worker, share.difficulty, currentMs].join(':'));

redisTx.rename(currentRound, newKey);
redisTx.sadd(pendingBlocksKey, blockWithTs);
redisTx.hset(foundBlocksKey, blockHash, share.workerAddress)
}
redisTx.exec(function(error, _){
if (error) logger.error('Handle share failed, error: ' + error);
if (share.foundBlock){
var blockHash = share.blockHash;
var newKey = _this.roundKey(fromGroup, toGroup, blockHash);
var blockWithTs = blockHash + ':' + currentMs.toString();

redisTx.renamenx(currentRound, newKey);
redisTx.sadd(pendingBlocksKey, blockWithTs);
redisTx.hsetnx(foundBlocksKey, blockHash, share.workerAddress)
redisTx.del(cacheKey);
}
redisTx.exec(function(error, _){
if (error) logger.error('Handle share failed, error: ' + error);
});
});
}

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