schema-registry | Confluent Schema Registry for Kafka | Serialization library
kandi X-RAY | schema-registry Summary
kandi X-RAY | schema-registry Summary
Confluent Schema Registry provides a serving layer for your metadata. It provides a RESTful interface for storing and retrieving your Avro, JSON Schema, and Protobuf schemas. It stores a versioned history of all schemas based on a specified subject name strategy, provides multiple compatibility settings and allows evolution of schemas according to the configured compatibility settings and expanded support for these schema types. It provides serializers that plug into Apache Kafka clients that handle schema storage and retrieval for Kafka messages that are sent in any of the supported formats.
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Top functions reviewed by kandi - BETA
- Default configuration defers .
- Starts the consumer .
- Converts a message element to a dynamic message definition .
- Execute the plugin .
- Compare arrays of items
- Compares the properties of the given update and compares them to the original schema .
- Performs the actual assignment .
- Compare two type elements .
- Sends a request to the REST endpoint .
- Checks whether the given value is present in this segment .
schema-registry Key Features
schema-registry Examples and Code Snippets
Lines of Code : 6License : Permissive (MIT License)
Copy@Bean
public SchemaRegistryClient schemaRegistryClient(@Value("${spring.cloud.stream.kafka.binder.producer-properties.schema.registry.url}") String endPoint) {
ConfluentSchemaRegistryClient client = new ConfluentSchemaRegistryClient();
Community Discussions
Trending Discussions on schema-registry
QUESTION
I'm following How to transform a stream of events tutorial. Everything works fine until topic creation part:
Under title Produce events to the input topic:
...ANSWER
Answered 2022-Apr-05 at 13:42How can I register Avro file in Schema manually from CLI?
You would not use a Producer, or Docker.
You can use Postman and send POST request (or the Powershell equivalent of curl) to the /subjects endpoint, like the Schema Registry API documentation says for registering schemas.
After that, using value.schema.id, as linked, will work.
Or, if you don't want to install anything else, I'd stick with value.schema.file. That being said, you must start the container with this file (or whole src\main\avro folder) mounted as a Docker volume, which would not be referenced by a Windows path when you actually use it as part of a docker exec command. My linked answer referring to the cat usage assumes your files are on the same filesystem.
Otherwise, the exec command is being interpreted by Powershell, first, so input redirection won't work, and type would be the correct command, but $() syntax might not be, as that's for UNIX shells;
Related - PowerShell: Store Entire Text File Contents in Variable
QUESTION
i am using apache kafka rest proxy using docker compose and it makes heavy log file heavier than my massages size i there any parameter to set or something to do to disable this ?
...ANSWER
Answered 2022-Mar-20 at 15:29KAFKA_REST_LOG4J_ROOT_LOGLEVEL defaults to INFO and can be changed to WARN or OFF.
To set additional loggers to specific levels,
KAFKA_REST_LOG4J_LOGGERS
QUESTION
I'm using a dockerized version of the Confluent Platform v 7.0.1:
...ANSWER
Answered 2022-Feb-18 at 22:37You 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.
QUESTION
I'm using databricks runtime 10.0 with spark 3.2.0 and scala 2.12. I also have a dependency on io.confluent:kafka-schema-registry-client:6.2.0, from which I use CachedSchemaRegistryClient to register schemas in schema registry like this:
...ANSWER
Answered 2022-Mar-08 at 13:53These are the code lines(186-192), where exception is thrown
QUESTION
I go to https://www.confluent.io/installation/, and download the Confluent platform in ZIP file under "Local", after unzip it, I continue to start the confluent platform by the following command:
...ANSWER
Answered 2022-Mar-10 at 17:18confluent CLI should be using etc/schema-registry/connect-avro-distributed.properties for the schema registry config, not any of the standalone ones.
Try updating the plugin.path in the other file and trying again.
how can I know the connect-standalone.properties is being loaded
Try ps -aux | grep Connect
If you are using a Linux host, it's recommended you use APT/YUM installation methods, not the tarball
https://docs.confluent.io/platform/current/installation/installing_cp/overview.html
QUESTION
I have a Flink job that runs well locally but fails when I try to flink run the job on cluster. The error happens when trying to load data from Kafka via 'connector' = 'kafka'. I am using Flink-Table API and confluent-avro format for reading data from Kafka.
So basically i created a table which reads data from kafka topic:
...ANSWER
Answered 2021-Oct-26 at 17:47I was able to fix this problem using following approach:
In my build.sbt, there was the following mergeStrategy:
QUESTION
I am using nifi to build a dataflow with the following setup:
- apache nifi 1.14.1
- kafka 2.13-2.7.1
- confluent schema registry
I am also using the processor ConsumeKafkaRecord_2_6 to process messages from a topic where the key and the value where both serialized using avro - schemas for the key and value are stored in the confluent schema registry. But the processor fails to parse the message because there is not a way - that I can see - to specify that both key and value are avro serialized with schemas stored in the confluent schema registry. The convention for naming the schema is usually [topic name]-value and [topic name]-key. I can read the messages just fine using kcat, formerly kafkacat using:
kcat -b broker1:9092,broker2:9092,broker3:9092 -t mytopic -s avro -r http://schema-registry_url.com -p 0
Is there a way to read such messages or am I supposed to add my own processor to nifi? Here's a trace of the error:
...ANSWER
Answered 2022-Feb-22 at 16:29If the data is already serialized correctly by some Confluent Serializer, you should prefer using the "Confluent Content-Encoded Schema Reference" option in the AvroReader since the Schema ID is embedded within the record and will get the correct subject/version, accordingly.
Otherwise, using the "Schema Name" or "Schema Text" value will either perform a lookup against the registry or use a literal, however, the deserializer will still expect a certain content-length of the record bytes, and seems to be the cause of the issue Malformed data. Length is negative ...
QUESTION
In my application config i have defined the following properties:
...ANSWER
Answered 2022-Feb-16 at 13:12Acording to this answer: https://stackoverflow.com/a/51236918/16651073 tomcat falls back to default logging if it can resolve the location
Can you try to save the properties without the spaces.
Like this:
logging.file.name=application.logs
QUESTION
I've installed latest (7.0.1) version of Confluent platform in standalone mode on Ubuntu virtual machine.
Python producer for Avro formatUsing 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 14:42If 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
QUESTION
I am working on a system that sends all logs for all microservices to a single topic apache kafka. Most services are in python but we are now forwarding logs from a Streams app. All other services use the same Schema defined in avro and managed by confluent's Schema Registry. I can get data posting to kafka fine as a string but cannot figure out how to upload a valid avro object linked to a schema registry schema. I am currently attempting to do this via a custom log4j plugin. For testing purposes I am writing these logs to their own topic and reading them out using kcat -b localhost:9092 -s value=avro -r localhost:8081 -t new_logs -f 'key: %k value: %s Partition: %p\n\n', but I get
ERROR: Failed to format message in new_logs [0] at offset 0: Avro/Schema-registry message deserialization: Invalid CP1 magic byte 115, expected 0: message not produced with Schema-Registry Avro framing: terminating
when doing this (that kcat command does work for my actual service logs topic and all other topics that use valid avro). Originally I tried using the org.apache.avro.generic.GenericData.Record class but could not figure out how to make it work in the methods toSerializable and toByteArray required by the AbstractLayout Interface since that class does not implement the serializable class. Below is the Plugin, class definition, log4j config
ServiceLogLayout.java
...ANSWER
Answered 2022-Feb-09 at 22:01OneCricketeer had the right idea, here is the implementation:
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Install schema-registry
You can download prebuilt versions of the schema registry as part of the [Confluent Platform](http://confluent.io/downloads/). To install from source, follow the instructions in the Development section.
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