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Error Handling for wrong group Id #244

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d9d0211
Update group_consumer.js
ashwinismath Dec 12, 2018
603184e
Update client.js
ashwinismath Dec 12, 2018
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11 changes: 10 additions & 1 deletion lib/client.js
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Original file line number Diff line number Diff line change
Expand Up @@ -632,7 +632,7 @@ Client.prototype._findGroupCoordinator = function (groupId) {
Client.prototype.joinConsumerGroupRequest = function (groupId, memberId, sessionTimeout, strategies) {
var self = this;

return self._findGroupCoordinator(groupId).then(function (connection) {
return self._findGroupCoordinator(groupId).then(function (connection) {
var correlationId = self.nextCorrelationId();
var buffer = self.protocol.write().JoinConsumerGroupRequest({
correlationId: correlationId,
Expand All @@ -650,7 +650,16 @@ Client.prototype.joinConsumerGroupRequest = function (groupId, memberId, session
}
return result;
});
})
.catch(function(err){
if(err[0].code == 'GroupAuthorizationFailed'){
if (err.length === 1) {
throw err[0];
}
throw err;
}
});

};

Client.prototype.heartbeatRequest = function (groupId, memberId, generationId) {
Expand Down
187 changes: 110 additions & 77 deletions lib/group_consumer.js
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Original file line number Diff line number Diff line change
@@ -1,11 +1,11 @@
'use strict';

var Promise = require('./bluebird-configured');
var _ = require('lodash');
var Promise = require('./bluebird-configured');
var _ = require('lodash');
var BaseConsumer = require('./base_consumer');
var Kafka = require('./index');
var util = require('util');
var errors = require('./errors');
var Kafka = require('./index');
var util = require('util');
var errors = require('./errors');

function GroupConsumer(options) {
this.options = _.defaultsDeep(options || {}, {
Expand Down Expand Up @@ -78,39 +78,60 @@ GroupConsumer.prototype.init = function (strategies) {
self.topics = self.topics.concat(s.subscriptions);
});

return self._fullRejoin();
return self._fullRejoin()
.catch(function (err) {
throw err;
});

});
};

GroupConsumer.prototype._joinGroup = function () {

var self = this;

return (function _tryJoinGroup(attempt) {

attempt = attempt || 0;
if (attempt > 3) {
throw new Error('Failed to join the group: GroupCoordinatorNotAvailable');
}

return self.client.joinConsumerGroupRequest(self.options.groupId, self.memberId, self.options.sessionTimeout, _.values(self.strategies))
.catch({ code: 'GroupCoordinatorNotAvailable' }, function () {
return Promise.delay(1000).then(function () {
return _tryJoinGroup(++attempt);

.catch(function (err) {
return Promise.delay(1000).then(function () {
return _tryJoinGroup(++attempt);
});
})
.catch({ code: 'GroupCoordinatorNotAvailable' }, function () {

return Promise.delay(1000).then(function () {
return _tryJoinGroup(++attempt);
});
});
});
}())
.then(function (response) {
if (self.memberId) {
self.client.log('Joined group', self.options.groupId, 'generationId', response.generationId, 'as', response.memberId);
if (response.memberId === response.leaderId) {
self.client.log('Elected as group leader');
.then(function (response) {
if (self.memberId) {
self.client.log('Joined group', self.options.groupId, 'generationId', response.generationId, 'as', response.memberId);
if (response.memberId === response.leaderId) {
self.client.log('Elected as group leader');
}
}
}
self.memberId = response.memberId;
self.leaderId = response.leaderId;
self.generationId = response.generationId;
self.members = response.members;
self.strategyName = response.groupProtocol;
});
self.memberId = response.memberId;
self.leaderId = response.leaderId;
self.generationId = response.generationId;
self.members = response.members;
self.strategyName = response.groupProtocol;
})
.catch(function (err) {

if (err.length === 1) {
throw err[0];
}
throw err;

});
};

GroupConsumer.prototype._syncGroup = function () {
Expand Down Expand Up @@ -141,29 +162,29 @@ GroupConsumer.prototype._syncGroup = function () {
}
return [];
})
.then(function (result) {
var assignments = _(result).groupBy('memberId').mapValues(function (mv, mk) {
return {
memberId: mk,
memberAssignment: {
version: 0,
metadata: null,
partitionAssignment: _(mv).groupBy('topic').map(function (tv, tk) {
return {
topic: tk,
partitions: _.map(tv, 'partition')
};
}).value()
}
};
}).values().value();
.then(function (result) {
var assignments = _(result).groupBy('memberId').mapValues(function (mv, mk) {
return {
memberId: mk,
memberAssignment: {
version: 0,
metadata: null,
partitionAssignment: _(mv).groupBy('topic').map(function (tv, tk) {
return {
topic: tk,
partitions: _.map(tv, 'partition')
};
}).value()
}
};
}).values().value();

// console.log(require('util').inspect(assignments, true, 10, true));
return self.client.syncConsumerGroupRequest(self.options.groupId, self.memberId, self.generationId, assignments);
})
.then(function (response) {
return self._updateSubscriptions(_.get(response, 'memberAssignment.partitionAssignment', []));
});
// console.log(require('util').inspect(assignments, true, 10, true));
return self.client.syncConsumerGroupRequest(self.options.groupId, self.memberId, self.generationId, assignments);
})
.then(function (response) {
return self._updateSubscriptions(_.get(response, 'memberAssignment.partitionAssignment', []));
});
};

GroupConsumer.prototype._rejoin = function () {
Expand All @@ -179,57 +200,69 @@ GroupConsumer.prototype._rejoin = function () {
return self._joinGroup().then(function () {
return self._syncGroup();
})
.catch({ code: 'RebalanceInProgress' }, function () {
return Promise.delay(1000).then(function () {
return _tryRebalance(++attempt);
.catch({ code: 'RebalanceInProgress' }, function () {

return Promise.delay(1000).then(function () {
return _tryRebalance(++attempt);
});
});
});
}());
};

GroupConsumer.prototype._fullRejoin = function () {
var self = this;

var fullRejoinAttempt = fullRejoinAttempt || 1;
return (function _tryFullRejoin() {
self.memberId = null;
return self.client.updateGroupCoordinator(self.options.groupId).then(function () {
return self._joinGroup().then(function () { // join group
return self._rejoin(); // rejoin and sync with received memberId
}).catch(function (err) {
return Promise.reject(err);
});
})
.catch(function (err) {
self.client.error('Full rejoin attempt failed:', err);
return Promise.delay(1000).then(_tryFullRejoin);
});
.catch(function (err) {
self.client.error('Full rejoin attempt failed:', err);
fullRejoinAttempt++;
if (err.message == "Failed to join the group: GroupCoordinatorNotAvailable" && fullRejoinAttempt > 3) {
if (err.length === 1) {
throw err[0];
}
throw err;
} else {
return Promise.delay(1000).then(_tryFullRejoin);
}

});
}())
.tap(function () {
self._heartbeatPromise = self._heartbeat(); // start sending heartbeats
return null;
});
.tap(function () {
self._heartbeatPromise = self._heartbeat(); // start sending heartbeats
return null;
});
};

GroupConsumer.prototype._heartbeat = function () {
var self = this;

return self.client.heartbeatRequest(self.options.groupId, self.memberId, self.generationId)
.catch({ code: 'RebalanceInProgress' }, function () {
// new group member has joined or existing member has left
self.client.log('Rejoining group on RebalanceInProgress');
return self._rejoin();
})
.tap(function () {
self._heartbeatTimeout = setTimeout(function () {
self._heartbeatPromise = self._heartbeat();
}, self.options.heartbeatTimeout);
})
.catch(function (err) {
// some severe error, such as GroupCoordinatorNotAvailable or network error
// in this case we should start trying to rejoin from scratch
self.client.error('Sending heartbeat failed: ', err);
return self._fullRejoin().catch(function (_err) {
self.client.error(_err);
.catch({ code: 'RebalanceInProgress' }, function () {
// new group member has joined or existing member has left
self.client.log('Rejoining group on RebalanceInProgress');
return self._rejoin();
})
.tap(function () {
self._heartbeatTimeout = setTimeout(function () {
self._heartbeatPromise = self._heartbeat();
}, self.options.heartbeatTimeout);
})
.catch(function (err) {
// some severe error, such as GroupCoordinatorNotAvailable or network error
// in this case we should start trying to rejoin from scratch
self.client.error('Sending heartbeat failed: ', err);
return self._fullRejoin().catch(function (_err) {
self.client.error(_err);
});
});
});
};

/**
Expand All @@ -246,9 +279,9 @@ GroupConsumer.prototype.end = function () {
clearTimeout(self._heartbeatTimeout);

return self.client.leaveGroupRequest(self.options.groupId, self.memberId)
.then(function () {
return BaseConsumer.prototype.end.call(self);
});
.then(function () {
return BaseConsumer.prototype.end.call(self);
});
};

GroupConsumer.prototype._prepareOffsetRequest = function (type, commits) {
Expand Down