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bitcoind: handle unexpected process exits

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This commit is contained in:
Braydon Fuller 2016-04-26 14:32:51 -04:00
parent d958e83f1d
commit d28f8567f1
1 changed files with 87 additions and 25 deletions
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112
lib/services/bitcoind.js
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@ -52,6 +52,9 @@ function Bitcoin(options) {
this.maxAddressesQuery = options.maxAddressesQuery || Bitcoin.DEFAULT_MAX_ADDRESSES_QUERY;
this.shutdownTimeout = options.shutdownTimeout || Bitcoin.DEFAULT_SHUTDOWN_TIMEOUT;
// spawn restart setting
this.spawnRestartTime = options.spawnRestartTime || Bitcoin.DEFAULT_SPAWN_RESTART_TIME;
// try all interval
this.tryAllInterval = options.tryAllInterval || Bitcoin.DEFAULT_TRY_ALL_INTERVAL;
this.startRetryInterval = options.startRetryInterval || Bitcoin.DEFAULT_START_RETRY_INTERVAL;
@ -70,6 +73,7 @@ Bitcoin.dependencies = [];
Bitcoin.DEFAULT_MAX_HISTORY = 10;
Bitcoin.DEFAULT_SHUTDOWN_TIMEOUT = 15000;
Bitcoin.DEFAULT_MAX_ADDRESSES_QUERY = 10000;
Bitcoin.DEFAULT_SPAWN_RESTART_TIME = 5000;
Bitcoin.DEFAULT_TRY_ALL_INTERVAL = 1000;
Bitcoin.DEFAULT_REINDEX_INTERVAL = 10000;
Bitcoin.DEFAULT_START_RETRY_INTERVAL = 5000;
@ -613,6 +617,39 @@ Bitcoin.prototype._loadTipFromNode = function(node, callback) {
});
};
Bitcoin.prototype._stopSpawnedBitcoin = function(callback) {
var spawnOptions = this.options.spawn;
var pidPath = spawnOptions.datadir + '/bitcoind.pid';
function stopProcess() {
fs.readFile(pidPath, 'utf8', function(err, pid) {
if (err && err.code === 'ENOENT') {
// pid file doesn't exist we can continue
return callback(null);
} else if (err) {
return callback(err);
}
pid = parseInt(pid);
log.warn('Stopping existing spawned bitcoin process with pid: ' + pid);
try {
process.kill(pid, 'SIGINT');
} catch(err) {
if (err && err.code === 'ESRCH') {
log.warn('Unclean bitcoin process shutdown, process not found with pid: ' + pid);
return callback(null);
} else if(err) {
return callback(err);
}
}
setTimeout(function() {
stopProcess();
}, 10000);
});
}
stopProcess();
};
Bitcoin.prototype._spawnChildProcess = function(callback) {
var self = this;
@ -634,43 +671,68 @@ Bitcoin.prototype._spawnChildProcess = function(callback) {
if (self._getNetworkOption()) {
options.push(self._getNetworkOption());
}
self.spawn.process = spawn(this.spawn.exec, options, {stdio: 'inherit'});
self.spawn.process.on('error', function(err) {
log.error(err);
});
async.retry({times: 60, interval: self.startRetryInterval}, function(done) {
if (self.node.stopping) {
return done(new Error('Stopping while trying to connect to bitcoind.'));
}
node.client = new BitcoinRPC({
protocol: 'http',
host: '127.0.0.1',
port: self.spawn.config.rpcport,
user: self.spawn.config.rpcuser,
pass: self.spawn.config.rpcpassword
});
self._loadTipFromNode(node, done);
}, function(err) {
self._stopSpawnedBitcoin(function(err) {
if (err) {
return callback(err);
}
self._initZmqSubSocket(node, self.spawn.config.zmqpubrawtx);
log.info('Starting bitcoin process');
self.spawn.process = spawn(self.spawn.exec, options, {stdio: 'inherit'});
self._checkReindex(node, function(err) {
self.spawn.process.on('error', function(err) {
self.emit('error', err);
});
self.spawn.process.once('exit', function(code) {
if (!self.node.stopping) {
log.warn('Bitcoin process unexpectedly exited with code:', code);
log.warn('Restarting bitcoin child process in ' + self.spawnRestartTime + 'ms');
setTimeout(function() {
self._spawnChildProcess(function(err) {
if (err) {
return self.emit('error', err);
}
log.warn('Bitcoin process restarted');
});
}, self.spawnRestartTime);
}
});
async.retry({times: 60, interval: self.startRetryInterval}, function(done) {
if (self.node.stopping) {
return done(new Error('Stopping while trying to connect to bitcoind.'));
}
node.client = new BitcoinRPC({
protocol: 'http',
host: '127.0.0.1',
port: self.spawn.config.rpcport,
user: self.spawn.config.rpcuser,
pass: self.spawn.config.rpcpassword
});
self._loadTipFromNode(node, done);
}, function(err) {
if (err) {
return callback(err);
}
self._checkSyncedAndSubscribeZmqEvents(node);
callback(null, node);
self._initZmqSubSocket(node, self.spawn.config.zmqpubrawtx);
self._checkReindex(node, function(err) {
if (err) {
return callback(err);
}
self._checkSyncedAndSubscribeZmqEvents(node);
callback(null, node);
});
});
});
};
Bitcoin.prototype._connectProcess = function(config, callback) {