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Troubleshooting services

Efficient troubleshooting of the HTTP-based function invocations, such as those using OpenAPI functions, is crucial for maintaining workflow orchestrations.

To diagnose issues, you can trace HTTP requests and responses.

Tracing HTTP requests and responses

OpenShift Serverless Logic uses the Apache HTTP client to the trace HTTP requests and responses.

Prerequisites

  • You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.

  • You have access to the OpenAPI specification files.

  • You have access to the workflow definition and instance IDs for correlating HTTP requests and responses.

  • You have access to the log configuration of the application where the HTTP service invocations are occurring

Procedure

  1. To trace HTTP requests and responses, OpenShift Serverless Logic uses the Apache HTTP client by setting the following property:

    # Turning HTTP tracing on
quarkus.log.category."org.apache.http".level=DEBUG

  2. Add the following configuration to your application’s application.properties file to turn on debugging for the Apache HTTP Client:

    quarkus.log.category."org.apache.http".level=DEBUG

  3. Restart your application to propagate the log configuration changes.

  4. After restarting, check the logs for HTTP request traces.

    Example logs of a traced HTTP request
    2023-09-25 19:00:55,242 DEBUG Executing request POST /v2/models/yolo-model/infer HTTP/1.1
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> POST /v2/models/yolo-model/infer HTTP/1.1
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> Accept: application/json
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> Content-Type: application/json
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> kogitoprocid: inferencepipeline
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> kogitoprocinstanceid: 85114b2d-9f64-496a-bf1d-d3a0760cde8e
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> kogitoprocist: Active
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> kogitoproctype: SW
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> kogitoprocversion: 1.0
2023-09-25 19:00:55,243 DEBUG http-outgoing-0 >> Content-Length: 23177723
2023-09-25 19:00:55,244 DEBUG http-outgoing-0 >> Host: yolo-model-opendatahub-model.apps.trustyai.dzzt.p1.openshiftapps.com

  5. Check the logs for HTTP response traces following the request logs.

    Example logs of a traced HTTP response
    2023-09-25 19:01:00,738 DEBUG http-outgoing-0 << "HTTP/1.1 500 Internal Server Error[\r][\n]"
2023-09-25 19:01:00,738 DEBUG http-outgoing-0 << "content-type: application/json[\r][\n]"
2023-09-25 19:01:00,738 DEBUG http-outgoing-0 << "date: Mon, 25 Sep 2023 19:01:00 GMT[\r][\n]"
2023-09-25 19:01:00,738 DEBUG http-outgoing-0 << "content-length: 186[\r][\n]"
2023-09-25 19:01:00,738 DEBUG http-outgoing-0 << "set-cookie: 276e4597d7fcb3b2cba7b5f037eeacf5=5427fafade21f8e7a4ee1fa6c221cf40; path=/; HttpOnly; Secure; SameSite=None[\r][\n]"
2023-09-25 19:01:00,738 DEBUG http-outgoing-0 << "[\r][\n]"
2023-09-25 19:01:00,738 DEBUG http-outgoing-0 << "{"code":13, "message":"Failed to load Model due to adapter error: Error calling stat on model file: stat /models/yolo-model__isvc-1295fd6ba9/yolov5s-seg.onnx: no such file or directory"}"