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Adding persistent subscription support

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This commit is contained in:
Nicolas Dextraze
2016-03-10 22:57:39 -08:00
parent 29f6bf210b
commit f1c3c42d46
25 changed files with 1939 additions and 117 deletions
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74
src/clientOperations/createPersistentSubscriptionOperation.js Normal file
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var util = require('util');
var uuid = require('uuid');
var ensure = require('../common/utils/ensure');
var OperationBase = require('../clientOperations/operationBase');
var TcpCommand = require('../systemData/tcpCommand');
var ClientMessage = require('../messages/clientMessage');
var SystemConsumerStrategies = require('../systemConsumerStrategies');
var InspectionDecision = require('../systemData/inspectionDecision');
var InspectionResult = require('./../systemData/inspectionResult');
var results = require('../results');
function CreatePersistentSubscriptionOperation(log, cb, stream, groupName, settings, userCredentials) {
OperationBase.call(this, log, cb, TcpCommand.CreatePersistentSubscription, TcpCommand.CreatePersistentSubscriptionCompleted, userCredentials);
ensure.notNull(settings, "settings");
this._resolveLinkTos = settings.resolveLinkTos;
this._stream = stream;
this._groupName = groupName;
this._startFromBeginning = settings.startFrom;
this._maxRetryCount = settings.maxRetryCount;
this._liveBufferSize = settings.liveBufferSize;
this._readBatchSize = settings.readBatchSize;
this._bufferSize = settings.historyBufferSize;
this._recordStatistics = settings.extraStatistics;
this._messageTimeoutMilliseconds = settings.messageTimeout;
this._checkPointAfter = settings.checkPointAfter;
this._minCheckPointCount = settings.minCheckPointCount;
this._maxCheckPointCount = settings.maxCheckPointCount;
this._maxSubscriberCount = settings.maxSubscriberCount;
this._namedConsumerStrategy = settings.namedConsumerStrategy;
this._responseType = ClientMessage.CreatePersistentSubscriptionCompleted;
}
util.inherits(CreatePersistentSubscriptionOperation, OperationBase);
CreatePersistentSubscriptionOperation.prototype._createRequestDto = function() {
return new ClientMessage.CreatePersistentSubscription(this._groupName, this._stream, this._resolveLinkTos,
this._startFromBeginning, this._messageTimeoutMilliseconds, this._recordStatistics, this._liveBufferSize,
this._readBatchSize, this._bufferSize, this._maxRetryCount,
this._namedConsumerStrategy == SystemConsumerStrategies.RoundRobin, this._checkPointAfter,
this._maxCheckPointCount, this._minCheckPointCount, this._maxSubscriberCount, this._namedConsumerStrategy);
};
CreatePersistentSubscriptionOperation.prototype._inspectResponse = function(response) {
switch (response.result)
{
case ClientMessage.CreatePersistentSubscriptionCompleted.CreatePersistentSubscriptionResult.Success:
this._succeed();
return new InspectionResult(InspectionDecision.EndOperation, "Success");
case ClientMessage.CreatePersistentSubscriptionCompleted.CreatePersistentSubscriptionResult.Fail:
this.fail(new Error(util.format("Subscription group %s on stream %s failed '%s'", this._groupName, this._stream, response.reason)));
return new InspectionResult(InspectionDecision.EndOperation, "Fail");
case ClientMessage.CreatePersistentSubscriptionCompleted.CreatePersistentSubscriptionResult.AccessDenied:
this.fail(new Error(util.format("Write access denied for stream '%s'.", this._stream)));
return new InspectionResult(InspectionDecision.EndOperation, "AccessDenied");
case ClientMessage.CreatePersistentSubscriptionCompleted.CreatePersistentSubscriptionResult.AlreadyExists:
this.fail(new Error(util.format("Subscription group %s on stream %s already exists", this._groupName, this._stream)));
return new InspectionResult(InspectionDecision.EndOperation, "AlreadyExists");
default:
throw new Error(util.format("Unexpected OperationResult: %s.", response.result));
}
};
CreatePersistentSubscriptionOperation.prototype._transformResponse = function(response) {
return new results.PersistentSubscriptionCreateResult(results.PersistentSubscriptionCreateStatus.Success);
};
CreatePersistentSubscriptionOperation.prototype.toString = function() {
return util.format("Stream: %s, Group Name: %s", this._stream, this._groupName);
};
module.exports = CreatePersistentSubscriptionOperation;