kafka-demo | simple app that streams tweets | TLS library

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kandi X-RAY | kafka-demo Summary

kafka-demo is a JavaScript library typically used in Security, TLS, Kafka applications. kafka-demo has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A simple app that streams tweets containing a specified set of keywords to web browser clients. Keywords are specified in the kafka-tweets app. They are read from a Kafka topic named 'test' from the 0th (zeroth) partition in that topic.

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Support

kafka-demo has a low active ecosystem.

It has 31 star(s) with 19 fork(s). There are 66 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 21 have been closed. On average issues are closed in 2 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of kafka-demo is current.

Quality

kafka-demo has no bugs reported.

Security

kafka-demo has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

kafka-demo does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

kafka-demo releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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kafka-demo Key Features

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kafka-demo Examples and Code Snippets

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Community Discussions

Trending Discussions on kafka-demo

Spring Kafka stream processor not working

Micronaut-Kafka with auto.commit.enable=false: how commit manually an offset

maven dependency management mechanism, the priority about dependency management which using import scope

Not able to run a class using kafka-run-class.bat on windows

Why can I see only every other message in this Kafka example?

Encryption, authentication and external access for Confluent Kafka on Kubernetes

QUESTION

Spring Kafka stream processor not working

Asked 2021-Apr-09 at 06:30

I'm trying to write a Kafka stream processor using Spring boot but it's not getting invoked when messages are produced into the topic.

I have the following producer that works fine with the topic name adt.events.location.

...

ANSWER

Answered 2021-Apr-07 at 08:03

Use @Autowired on the KafkaTemplate. I think this is the thing that you are missing. The example that I give does not use AvroSerializer. So I assume that your serializer is working. At least you should see the message arriving on the consumer or a serialization error. Moreover, you can improve your method to handle callbacks and use a more consistent message record. For instance, use the ProducerRecord to create the message that you will send. Add a callback using ListenableFuture.

Source https://stackoverflow.com/questions/66975105

QUESTION

Micronaut-Kafka with auto.commit.enable=false: how commit manually an offset

Asked 2020-Dec-11 at 21:17

I want to commit a message only if it was saved succesfully in database.

I understand I have turned off auto-commit with this application.yml

...

ANSWER

Answered 2020-Dec-11 at 09:35

According to the documentation you can set the offsetStrategy in your KafkaListener annotation like

Source https://stackoverflow.com/questions/65246599

QUESTION

maven dependency management mechanism, the priority about dependency management which using import scope

Asked 2020-Jul-06 at 07:22

There are two examples.

example 1.

pom of project A is a simple pom:

...

ANSWER

Answered 2020-Jul-06 at 07:22

AFAIK, dependencyManagement that is directly declared in the POM is always stronger than imported dependencyManagement.

It is wrong to assume that an import is the same as declaring the list from the BOM at the same place.

So in your second example, one of the BOMs is used as parent, so it is directly used in the resulting effective POM, while the other is an import, which is less strong.

Source https://stackoverflow.com/questions/62750789

QUESTION

Not able to run a class using kafka-run-class.bat on windows

Asked 2019-Sep-27 at 06:47

I have created a demo app using KafkaStream API. Trying to run the app using kafka-run-class.bat file but getting error "Could not find or load main class com.kafka.StreamApp"

This is the path to my class : "C:\Users\ankit.srivastava\eclipse-workspace\kafka-demo\src\main\java\com\kafka"

I have set my CLASSPATH envrionment variable as :

"C:\Users\ankit.srivastava\eclipse-workspace\kafka-demo\src\main\java"

Command i am trying to run to start the app from "C:\Users\ankit.srivastava\Documents\Kafka\kafka" :

"bin\windows\kafka-run-class.bat com.kafka.StreamApp"

...

ANSWER

Answered 2019-Sep-27 at 06:47

You don't need kafka-run-class to run your own Consumer or Producer. You should be able to deploy and run your code without depending on having Kafka installed on any machine.

That being said, you'd run the code just using java, as normal.

Regarding your error, it's not specific to Kafka. Simply, you've pointed the CLASSPATH at Java files, not compiled class files.

Based on the path of files, seems like you might be using Maven or Gradle, so I'd suggest using the JAR file built from those

And based on your previous questions, I'd suggest using Spring-Kafka or Spring Cloud Streams to simplify the configuration of your code

Source https://stackoverflow.com/questions/58128938

QUESTION

Why can I see only every other message in this Kafka example?

Asked 2019-Aug-12 at 13:43

I'm trying to modify one of spring cloud stream samples and the results I'm getting are confusing - even though I registered only a single stream listener for my channel I'm getting only every second message. I suspect this is caused by default load balancing for a single kafka partition, but I can't figure out how to confirm this.

docker ps shows only a single instance of kafka broker being up

...

ANSWER

Answered 2019-Aug-12 at 13:43

You have two consumers on the output channel - the binding to the topic and your receive() service activator.

The default round robin processing sends messages alternately to your service activator and the topic.

Source https://stackoverflow.com/questions/57443978

QUESTION

Encryption, authentication and external access for Confluent Kafka on Kubernetes

Asked 2019-May-23 at 06:27

Am trying to configure Encryption, authentication and external access for Confluent Kafka on Kubernetes.

helm chart https://github.com/confluentinc/cp-helm-charts.

Document following : https://medium.com/weareservian/encryption-authentication-and-external-access-for-confluent-kafka-on-kubernetes-69c723a612fc

As per document I have configured

secrets.yaml https://raw.githubusercontent.com/bakuppus/kafka-demo/master/secrets.yaml
Statefulset.yaml https://github.com/bakuppus/kafka-demo/blob/master/cp-helm-charts/charts/cp-kafka/templates/statefulset.yaml

While set SSL as per export KAFKA_ADVERTISED_LISTENERS=SSL://${POD_IP}:9092,EXTERNAL://${HOST_IP}:$((31090 + ${KAFKA_BROKER_ID})) && \

Pods are getting CrashLoopBackOff

my-confluent-oss-cp-kafka-0 2/3 CrashLoopBackOff 3 2m40s my-confluent-oss-cp-kafka-1 2/3 CrashLoopBackOff 3 2m13s my-confluent-oss-cp-kafka-2 2/3 Error 3 111s

kubectl logs error

SSL is enabled. 'ascii' codec can't decode byte 0xb5 in position 0: ordinal not in range(128) Command [/usr/local/bin/dub template /etc/confluent/docker/kafka.properties.template /etc/kafka/kafka.properties] FAILED !

...

ANSWER

Answered 2019-May-23 at 00:11

You have plaintext passwords in the secrets.yaml file: they need to be base64 encoded like the keystore files.

Also, it looks like you're missing a protocol mapping for the named EXTERNAL listener, KAFKA_LISTENER_SECURITY_PROTOCOL_MAP environment variable should be:

Source https://stackoverflow.com/questions/56263429

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Vulnerabilities

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Install kafka-demo

You can download it from GitHub.

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