https://github.com/ammbra/hidden-gems

Code sample for hidden gems
https://github.com/ammbra/hidden-gems

jaeger java opentelemetry prometheus sample-java-project tracing

Last synced: 3 months ago
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Code sample for hidden gems

• Host: GitHub
• URL: https://github.com/ammbra/hidden-gems
• Owner: ammbra
• License: mit
• Created: 2022-03-13T11:14:59.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-01-27T11:40:54.000Z (almost 2 years ago)
• Last Synced: 2023-02-26T23:22:55.977Z (almost 2 years ago)
• Topics: jaeger, java, opentelemetry, prometheus, sample-java-project, tracing
• Language: Java
• Homepage:
• Size: 162 KB
• Stars: 11
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.adoc
  • License: LICENSE

Awesome Lists containing this project

README

        
= How to use the examples in this repo

== Batch processing

The default processor config is set to batch:

```

processors:

  batch:

  spanmetrics:

    metrics_exporter: prometheus

service:

  pipelines:

    traces:

      receivers: [jaeger]

      processors: [spanmetrics, batch]

```

== Tail-sampling

To enable `tail_sampling`, make sure your _otel-collector-config.yml_ has the following configuration:

```processors:

  tail_sampling:

    decision_wait: 10s

    num_traces: 100

    expected_new_traces_per_sec: 10

    policies:

      [

        {

          name: latency-policy,

          type: latency,

          latency: { threshold_ms: 5000 }

        },

        {

          name: status-code-policy,

          type: status_code,

          status_code: { status_codes: [ ERROR, OK ] }

        },

        {

          name: string-policy,

          type: string_attribute,

          string_attribute: { key: alarm, values: [ unexpected ] }

        }

      ]

  spanmetrics:

    metrics_exporter: prometheus

service:

  pipelines:

    traces:

      receivers: [jaeger]

      processors: [spanmetrics, tail_sampling]

```

Also, use `quarkus.opentelemetry.tracer.sampler=on` in Quarkus configuration.

curl -X 'POST' 'http://activity:80/api/send-request' -H 'trace-debug-id:local' -H 'accept: */*' -H 'Content-Type: application/json' -d '{"uppercase": true,"reverse": true}'

== Rate of requests for a specific status in the 5 minutes

```

(sum by (job, uri, status)(rate(http_server_requests_seconds_sum{job="hobby", method="POST", uri="/api/send-request"}[5m])))

or

(sum by (job, uri, status)(rate(http_server_requests_seconds_sum{job="activity", method="GET", uri="/activity"}[5m])))

```

== Using the trace-debug-id header

If you would like to use the extra attribute for debugging, you can try the following command:

```

curl -H 'trace-debug-id:local' http://localhost:8080/activity/

```

=== Query for a cache hit rate graph with Prometheus

You can simulate some load using hey:

hey -n 20 -c 10  -H 'trace-debug-id:local' http://localhost:8080/activity

```

sum(delta(cache_gets_total{result="hit",cache="activity"}[1m]))/sum(delta(cache_gets_total{cache="activity"}[1m])) 

```