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Questions tagged [broker]

389 questions
4
votes
3 answers

Architecture for stream analytics. Which broker I need?

for research purpose I'm studying an architecture to do real-time (and also offline) data analytics and semantic annotation. I've attached a basic schema: I have some sensors linked to a raspberry pi 3. I suppose can handle this link with a mqqt…
Akinn
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2 answers

Starting ActiveMQ programmatically not as a service

I am working with ActiveMQ and I create producer and a consumer for some messages. This way I create the connection, and I create the destination: ActiveMQConnectionFactory factory = new…
Nelly Junior
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1 answer

How to connect to an ActiveMQ server by setting the username and password programmatically?

I create an ActiveMQ server in order to send some messages. I use Apache Activemq version 5.14.4 I want to be asked for username and password when I try to connect to the ActiveMQ server and that's why I added a simple authentification plugin into…
Nelly Junior
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4
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2 answers

How to mediate pure TCP messages in WSO2 ESB

I have an application (say, TcpApp) sending pure TCP messages (i.e., no SOAP, no envelope ... just a raw string or even bytes). I need to connect ESB to listen those messages over a specific port (say, 3333), and make some mediation (for now, do…
Kato
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0 answers

RabbitMQ: Message queue backup

To achieve message queue backup and restore is it enough to save the files under the Mnesia database directory and the broker configuration? also do i have to stop the broker before copying the files? Thanks!
lior
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4
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3 answers

Interactive Brokers API and Web Application

We would like to add a feature to the website to enable members to access their Interactive Broker Account directly from our Platform (API http://www.interactivebrokers.com/en/?f=%2Fen%2Fsoftware%2Fibapi.php ). I believe Trade Work Station (TWS)…
user1377822
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Cannot lookup a consumer from a connection that had not been registered / The subscription does not exist

I run an ActiveMQ 5.5.1 broker with two queue. Clients produce messages (varying from many small to some of significant size) and put them into queue 1, from where consumers take the messages from the queue by pulling them at their speed (message…
jayeff
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3
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1 answer

SQL Queue stops working and fills up with messages

currently I'm struggling with the SQL broker. Everything seems to be configured well, but the queue stops working and fills up with unsent messages. The broker and the queue are enabled. If i drop the queue and the service and recreate them, it…
user1147311
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1 answer

SqlCacheDependency on Views and Procedures

I want to use SqlCacheDependency with the views and procedures. I am using Linq to Sql. The code i am currently using is valid only if you are using a Single Table: public static List LinqCache(this System.Linq.IQueryable q,…
Moons
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Kafka ISR Keeps Shrinking and Out Of Sync Replicas

We are using Kafka Confluent platform, it's Kafka cluster where we are using almost 10 Brokers and 5 ZK Servers. Some of the clients requesting the data from Kafka, some times they are getting the Read Timeout errors from my Kafka side while connect…
Anilkumar Bathula
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Create queue, exchange and binding automatically - Integration Test with qpid Embedded Broker - in JSON file Configuration

I´m trying create a Integration test with qpid embedded memory broker.My idea is to create a component where developers don't have to do any configuration, I want to know if there is a way to create queues, exchanges and bindings automatically from…
Yesid Vargas
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1 answer

How to list all available brokers in Kafka cluster using Java API?

What the title says. Is there anyway (using Kafka Java API) to get the number of AVAILABLE Kafka brokers in a cluster? I know that with the command line utility that comes with the Kafka server, this can be done; but I haven't found anything on how…
comandantexd
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3 answers

When using MQTT with Qos 1, there is no need to send PUBACK packet from subscriber to the broker?

I've been trying to find out the flow of the QoS 1, but it's hard. As I understood, when a publisher sends some packets with QoS1, it must wait for the PUB ACK packet. I thought when a broker got a PUB packet, it needed to send this to all the…
user7024
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1 answer

Kafka : Update jaas config dynamically

I have setup the jaas config for kafka using sasl.jaas.config property. I want to update this config and add users dynamically. As per this doc - http://kafka.apache.org/11/documentation.html#dynamicbrokerconfigs, we can do that by using…
Tushar H
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2 answers

How should support for alternate credential types in twisted.pb be implemented?

My project has been trying to implement a credential checker using scrypt. We've tried implementing our own credentials and checker objects, but we've had a lot of trouble getting pb to use them. Pb seems hard-coded to use MD5 hashes over the wire,…
codermonkeyfuel
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