ksql | barebones go client for interacting with Confluent 's KSQL | Pub Sub library

by Mongey Go Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | ksql Summary

ksql is a Go library typically used in Messaging, Pub Sub, Kafka applications. ksql has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A barebones go client for interacting with Confluent's KSQL.

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Security

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Support

ksql has a low active ecosystem.

It has 10 star(s) with 8 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

There are 3 open issues and 0 have been closed. There are 3 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of ksql is current.

Quality

ksql has 0 bugs and 0 code smells.

Security

ksql has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

ksql code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

ksql 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

ksql 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.

It has 326 lines of code, 15 functions and 3 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed ksql and discovered the below as its top functions. This is intended to give you an instant insight into ksql implemented functionality, and help decide if they suit your requirements.

Run all KSQL queries .
LimitQuery executes a request and returns the results .
NewClientContext returns a new Client .
readQR reads a QR from rd
NewClient creates a Client .

Get all kandi verified functions for this library.

ksql Key Features

No Key Features are available at this moment for ksql.

ksql Examples and Code Snippets

No Code Snippets are available at this moment for ksql.

Community Discussions

Trending Discussions on ksql

KSQL UDF access ROWPARTITION and similar information

How to create an output stream (changelog) based on a table in KSQL correctly?

How to select value in a JSON string by KSQL?

Can we select a specific row of records from a confluent kafka topic?

Confluent Platform - how to properly use ksql-datagen?

How to manipulate Kafka key documents with KSQLDB?

Kafka-connect to PostgreSQL - org.apache.kafka.connect.errors.DataException: Failed to deserialize topic to to Avro

Why is `Properties` not a valid field name in ksql?

ksqlDB - How to set batch.size and linger.ms for producers to optimise compression

How to copy and transform all messages from one kafka topic (in avro format) to another topic (in json format)

QUESTION

KSQL UDF access ROWPARTITION and similar information

Asked 2022-Apr-14 at 19:27

I have a custom UDF that I can pass a struct to:

select my_udf(a.my_data) from MY_STREAM a;

What I would like to do, is pass all info from my stream to that custom UDF:

select my_udf(a) from MY_STREAM a;

That way I can access the row partition, time, offset, etc. Unfortunately, KSQL does not understand my intent:

SELECT column 'A' cannot be resolved

Any idea how I could work around this?

...

ANSWER

Answered 2022-Apr-14 at 19:27

It's not possible to pass in a full row into a UDF, only columns, and a is the name of the stream, not a column name.

You can change your UDF, to accept multiple parameters, eg, my_udf(my_data, ROWTIME, ROWPARTITION) to pass in an the needed metadata individually.

Source https://stackoverflow.com/questions/71871349

QUESTION

How to create an output stream (changelog) based on a table in KSQL correctly?

Asked 2022-Apr-02 at 15:59

Step 1: Create table

I currently have a table in KSQL which created by

...

ANSWER

Answered 2022-Apr-02 at 15:59

In step 2, instead of using the topic cdc_window_table, I should use something like _confluent-ksql-xxx-ksqlquery_CTAS_CDC_WINDOW_TABLE_271-Aggregate-GroupBy-repartition.

This table's changelog topic is automatically created by KSQL when I created the previous table.

You can find this long changelog topic name by using

Source https://stackoverflow.com/questions/71712040

QUESTION

How to select value in a JSON string by KSQL?

Asked 2022-Apr-01 at 19:04

I have a JSONB field called metadata in a Postgres table. When I use Debezium PostgreSQL Connector to generate CDC, it writes metadata as a string into Kafka.

This one CDC I got in the Kafka topic my_db_server.public.product:

...

ANSWER

Answered 2022-Apr-01 at 09:08

You can access operation using extractjsonfield function like that:

Source https://stackoverflow.com/questions/71681115

QUESTION

Can we select a specific row of records from a confluent kafka topic?

Asked 2022-Mar-18 at 09:56

In my local Confluent Platform, I have 1 topic call "FOO_02", I have manually insert some records to it, thus, I can print it from beginning base on the following command:

...

ANSWER

Answered 2022-Mar-18 at 09:56

I'm presuming that you've already done

Source https://stackoverflow.com/questions/71509949

QUESTION

Confluent Platform - how to properly use ksql-datagen?

Asked 2022-Mar-14 at 19:57

I'm using a dockerized version of the Confluent Platform v 7.0.1:

...

ANSWER

Answered 2022-Feb-18 at 22:37

You may be hitting issues since you are running an old version of ksqlDB's quickstart (0.7.1) with Confluent Platform 7.0.1.

If you check out a quick start like this one: https://ksqldb.io/quickstart-platform.html, things may work better.

I looked for an updated version of that data generator and didn't find it quickly. If you are looking for more info about structured data, give https://docs.ksqldb.io/en/latest/how-to-guides/query-structured-data/ a read.

Source https://stackoverflow.com/questions/71177830

QUESTION

How to manipulate Kafka key documents with KSQLDB?

Asked 2022-Mar-04 at 21:45

I have a problem. I can't find a way to create a stream by filtering on the key of a kafka document.

I would like to filter and manipulate the json of a kafka key to retrieve the payload of the following example which corresponds to my couchbase id:

ksql> print 'cb_bench_products-get_purge' limit 1;

...

ANSWER

Answered 2022-Mar-04 at 14:26

You didn't specify the value part of your message so I've mocked up some data and assumed that it's also JSON. First I load it into a topic to test again:

Source https://stackoverflow.com/questions/71350437

QUESTION

Kafka-connect to PostgreSQL - org.apache.kafka.connect.errors.DataException: Failed to deserialize topic to to Avro

Asked 2022-Feb-11 at 14:44

Setup

I've installed latest (7.0.1) version of Confluent platform in standalone mode on Ubuntu virtual machine.

Python producer for Avro format

Using this sample Avro producer to generate stream from data to Kafka topic (pmu214).

Producer seems to work ok. I'll give full code on request. Producer output:

...

ANSWER

Answered 2022-Feb-11 at 14:42

If you literally ran the Python sample code, then the key is not Avro, so a failure on the key.converter would be expected, as shown

Error converting message key

Source https://stackoverflow.com/questions/71079242

QUESTION

Why is `Properties` not a valid field name in ksql?

Asked 2022-Feb-10 at 18:21

https://docs.confluent.io/5.4.1/ksql/docs/developer-guide/syntax-reference.html#struct-overview Confluent docs say they don't accept Properties as a valid field name, but why?

What if I do have a schema with Properties, what can I do then?

...

ANSWER

Answered 2022-Feb-10 at 18:21

It's a keyword/reserved word in the language. I'm not familiar with ksql specifically, but most sql distributions provide backticks to escape references for this reason (and more). Without those, it'd make sense you couldn't use it.

As an example of using backticks in a pretty standard sql statement:

Source https://stackoverflow.com/questions/71027637

QUESTION

ksqlDB - How to set batch.size and linger.ms for producers to optimise compression

Asked 2022-Feb-01 at 08:00

When configuring ksqlDB I can set the option ksql.streams.producer.compression.type which enables compression for ksqlDB's internal producers. Thus when I create a ksqlDB stream, it's output topic will be compressed with the selected compression type.

However, as far as I have understood the compression performance is heavily impacted by how much batching the producer does. Therefore, I wish to be able to configure the batch.size and linger.ms parameters for ksqlDB's producers. Does anyone know if and how these parameters can be set for ksqlDB?

...

ANSWER

Answered 2022-Feb-01 at 08:00

Thanks to Matthias J Sax for answering my question on the Confluent Community Slack channel: https://app.slack.com/client/T47H7EWH0/threads?cdn_fallback=1

There is an info-box in the documentation. That explains it pretty well:

KSQL documentation info box

The underlying producer and consumer clients in ksqlDB's server can be modified with any valid properties. Simply use the form ksql.streams.producer.xxx, ksql.streams.consumer.xxx to pass the property through. For example, ksql.streams.producer.compression.type sets the compression type on the producer.

Source: https://docs.ksqldb.io/en/latest/reference/server-configuration/

Source https://stackoverflow.com/questions/69896696

QUESTION

How to copy and transform all messages from one kafka topic (in avro format) to another topic (in json format)

Asked 2022-Jan-21 at 13:38

My team is using Kafka Confluent (enterprise version) and we are very new to kafka.
We have 2 topic A and B.

Topic A will receive all json messages and formatted by Avro Schema (using URL to schema registry).

By some reasons, The development tool we are using does not support receiving messages from topic A in avro format. We create Topic B and want to use KsqlDB to copy all messages from topic A to topic B and also transform all messages from avro format to normal json format so that we can develop a component that can pick up json messages from topic B.

Could you please show me code to create ksql stream to do that.

...

ANSWER

Answered 2022-Jan-21 at 13:38

Source https://stackoverflow.com/questions/70796664

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

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Install ksql

You can download it from GitHub.

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