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https://github.com/strimzi/strimzi-kafka-bridge

An HTTP bridge for Apache Kafka®
https://github.com/strimzi/strimzi-kafka-bridge

bridge hacktoberfest http kafka kafka-bridge kafka-client kafka-consumer kafka-producer kafka-rest-proxy

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An HTTP bridge for Apache Kafka®

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# HTTP bridge for Apache Kafka®

This project provides a software component which acts as a bridge between [HTTP 1.1 (Hypertext Transfer Protocol)](https://tools.ietf.org/html/rfc2616) and an [Apache Kafka®](https://kafka.apache.org/) cluster.

It provides a different way to interact with Apache Kafka because the latter natively supports only a custom (proprietary) protocol.
Thanks to the bridge, all clients which can speak HTTP 1.1 protocol can connect to Apache Kafka cluster in order to send and receive messages to / from topics.

## Running the bridge

### On Kubernetes and OpenShift

Use the [Strimzi Kafka operator](https://strimzi.io/docs/operators/latest/deploying.html) to deploy the Kafka Bridge with HTTP support on Kubernetes and OpenShift.

### On bare-metal / VM

Download the ZIP or TAR.GZ file from the [GitHub release page](https://github.com/strimzi/strimzi-kafka-bridge/releases) and unpack it.
Afterwards, edit the `config/application.properties` file which contains the configuration.
Once your configuration is ready, start the bridge using:

```bash
bin/kafka_bridge_run.sh --config-file config/application.properties
```

Kafka Bridge releases are also available to [download](https://strimzi.io/downloads/) from the Strimzi website.

## Kafka Bridge documentation

The [Kafka Bridge documentation](https://strimzi.io/docs/bridge/latest/) provides information on getting started with the Kafka Bridge.

The source files for the Kafka Bridge documentation are maintained in the [`documentation`](/documentation) folder.
The documentation is maintained in `.adoc` files.
The `.adoc` files for the API reference section (`documentation/book/api`) are generated from descriptions in the source OpenAPI JSON file (`src/main/resources/openapiv2.json`), so they must not be edited directly.

If you spot something that needs updating or changing in the Kafka Bridge documentation, you can open an issue or open a PR and contribute directly.

For more information on contributing to the Strimzi documentation, see the [Strimzi Documentation Contributor Guide](https://strimzi.io/contributing/guide/).

## Getting help

If you encounter any issues while using Strimzi Kafka Bridge, you can get help through the following methods:

- [Strimzi Users mailing list](https://lists.cncf.io/g/cncf-strimzi-users/topics)
- [#strimzi channel on CNCF Slack](https://slack.cncf.io/)

## Contributing

You can contribute by:
- Raising any issues you find using Strimzi Kafka Bridge
- Fixing issues by opening Pull Requests
- Improving documentation
- Talking about Strimzi Kafka Bridge

All bugs, tasks or enhancements are tracked as [GitHub issues](https://github.com/strimzi/strimzi-kafka-bridge/issues). Issues which
might be a good start for new contributors are marked with ["good-start"](https://github.com/strimzi/strimzi-kafka-bridge/labels/good-start) label.

The [Building Strimzi Kafka Bridge](BUILDING.md) guide describes how to build Strimzi Kafka Bridge and how to test your changes before submitting a patch or opening a PR.

If you want to get in touch with us first before contributing, you can use:

- [Strimzi Dev mailing list](https://lists.cncf.io/g/cncf-strimzi-dev/topics)
- [#strimzi channel on CNCF Slack](https://slack.cncf.io/)

Learn more on how you can contribute on our [Join Us](https://strimzi.io/join-us/) page.

## License

Strimzi Kafka Bridge is licensed under the [Apache License](./LICENSE), Version 2.0

## Container signatures

From the 0.27.0 release, Strimzi Kafka Bridge containers are signed using the [`cosign` tool](https://github.com/sigstore/cosign).
Strimzi currently does not use the keyless signing and the transparency log.
To verify the container, you can copy the following public key into a file:

```
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAET3OleLR7h0JqatY2KkECXhA9ZAkC
TRnbE23Wb5AzJPnpevvQ1QUEQQ5h/I4GobB7/jkGfqYkt6Ct5WOU2cc6HQ==
-----END PUBLIC KEY-----
```

And use it to verify the signature:

```
cosign verify --key strimzi.pub quay.io/strimzi/kafka-bridge:latest --insecure-ignore-tlog=true
```

## Software Bill of Materials (SBOM)

From the 0.27.0 release, Strimzi Kafka Bridge publishes the software bill of materials (SBOM) of our containers.
The SBOMs are published as an archive with `SPDX-JSON` and `Syft-Table` formats signed using cosign.
For releases, they are also pushed into the container registry.
To verify the SBOM signatures, please use the Strimzi public key:

```
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAET3OleLR7h0JqatY2KkECXhA9ZAkC
TRnbE23Wb5AzJPnpevvQ1QUEQQ5h/I4GobB7/jkGfqYkt6Ct5WOU2cc6HQ==
-----END PUBLIC KEY-----
```

You can use it to verify the signature of the SBOM files with the following command:

```
cosign verify-blob --key cosign.pub --bundle .bundle --insecure-ignore-tlog=true
```