https://github.com/quarkiverse/quarkus-logging-json

Quarkus logging extension outputting the logging in json.
https://github.com/quarkiverse/quarkus-logging-json

hacktoberfest json logging quarkus quarkus-extension

Last synced: 3 months ago
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Quarkus logging extension outputting the logging in json.

• Host: GitHub
• URL: https://github.com/quarkiverse/quarkus-logging-json
• Owner: quarkiverse
• License: apache-2.0
• Created: 2020-10-01T12:54:47.000Z (almost 5 years ago)
• Default Branch: main
• Last Pushed: 2025-01-16T09:08:36.000Z (6 months ago)
• Last Synced: 2025-03-28T18:13:50.340Z (4 months ago)
• Topics: hacktoberfest, json, logging, quarkus, quarkus-extension
• Language: Java
• Homepage:
• Size: 361 KB
• Stars: 69
• Watchers: 5
• Forks: 31
• Open Issues: 19
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Codeowners: .github/CODEOWNERS

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# Quarkus Logging Json

Quarkus logging extension outputting the logging in json.

## Version to use

| Quarkus Version | Use version |

|-------|-------|

| 3.x.x | 3.x.x |

| 2.x.x | 1.x.x, 2.x.x |

# Configuration

The extension is enabled by default for console, when added to the project.

Console logging can be disabled using configuration: `quarkus.log.json.console.enable=false`

To see additional configuration options take a look at [Config](https://quarkiverse.github.io/quarkiverse-docs/quarkus-logging-json/dev/index.html)

## Elastic Common Scheme

```properties

quarkus.log.json.log-format=ecs

```

# Add additional fields to all log messages

If you want to add a static field to all the log message, that is possible using the configuration.

```properties

quarkus.log.json.additional-field.serviceName.value=service-a

# type is by default STRING - Other is INT, LONG, FLOAT, DOUBLE 

quarkus.log.json.additional-field.buildNumber.type=INT

quarkus.log.json.additional-field.buildNumber.value=42

```

# Structured argument

If you want to do structured logging of arguments, then the argument send with your logging, can implement `io.quarkiverse.loggingjson.providers.StructuredArgument`. Then it is possible to use the JsonGenerator to format the argument in json. 

## Simple usage

```java

import static io.quarkiverse.loggingjson.providers.KeyValueStructuredArgument.*;

...

log.info("Test log of structured arg", kv("key", "value"));

```

# Custom log handler

If you want to add your own custom way to handle the LogRecords.

You can create your own implementations of `io.quarkiverse.loggingjson.JsonProvider`, and provide it using CDI.

Example implementation:

```java

import jakarta.inject.Singleton;

import java.io.IOException;

import io.quarkiverse.loggingjson.JsonProvider;

import io.quarkiverse.loggingjson.JsonGenerator;

import org.jboss.logmanager.ExtLogRecord;

@Singleton

public class MyJsonProvider implements JsonProvider {

    @Override

    public void writeTo(JsonGenerator generator, ExtLogRecord event) throws IOException {

        generator.writeStringField("myCustomField", "and my custom value"); // Will be added to every log, as a field on the json.

    }

}

```

## Contributors ✨

Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):

  

    
Simon Bengtsson
💻 🚧

  

This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!