https://github.com/msdousti/logbook-mdc

A minimal project showing how logbook can incorporate SLF4j's MDC
https://github.com/msdousti/logbook-mdc

Last synced: 23 days ago
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A minimal project showing how logbook can incorporate SLF4j's MDC

• Host: GitHub
• URL: https://github.com/msdousti/logbook-mdc
• Owner: msdousti
• License: apache-2.0
• Created: 2023-09-20T15:35:09.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-09-20T15:46:19.000Z (about 1 year ago)
• Last Synced: 2023-09-21T05:17:58.311Z (about 1 year ago)
• Language: Java
• Size: 65.4 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# logbook-mdc

A minimal project showing how Logbook honors SLF4J's MDC, in response

to [issue 1625](https://github.com/zalando/logbook/issues/1625).

## How to run

In a terminal, run the following command:

```bash

./mvnw clean spring-boot:run

```

In a separate terminal, run the following command:

```bash

curl localhost:8080/hello

```

Notice the log output in the first terminal:

```

2023-09-20 17:38:32.540 [http-nio-8080-exec-1] TRACE org.zalando.logbook.Logbook - [] {"origin":"remote","type":"request","correlation":"f8c75cfcb28b297e","protocol":"HTTP/1.1","remote":"127.0.0.1","method":"GET","uri":"http://localhost:8080/hello","host":"localhost","path":"/hello","scheme":"http","port":"8080","headers":{"accept":["*/*"],"host":["localhost:8080"],"user-agent":["curl/8.0.1"]}}

2023-09-20 17:38:32.553 [http-nio-8080-exec-1] INFO  io.msdousti.mdc.HelloController - [traceId=8634834348347834661212] Hello from Spring Boot!

2023-09-20 17:38:32.570 [http-nio-8080-exec-1] TRACE org.zalando.logbook.Logbook - [traceId=8634834348347834661212] {"origin":"local","type":"response","correlation":"f8c75cfcb28b297e","duration":64,"protocol":"HTTP/1.1","status":200,"headers":{"Content-Length":["5"],"Content-Type":["text/plain;charset=UTF-8"],"Date":["Wed, 20 Sep 2023 15:38:32 GMT"]},"body":"Hello"}

```

* The first line is from Logbook, logging the request. At that time, MDC was empty.

* The second line is from the HelloController. The HelloController populates MDC with the traceId

  by `MDC.put("traceId", "8634834348347834661212")`;

* The third line is from Logbook, logging the response. At that time, MDC had the traceId, and it is logged as expected.