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Wrapped JSON Correctness Test

This test verifies that wrapped JSON documents are parsed correctly:

{"log":"{\"message\":\"Hello world\"}"}

This is a very important for environments that wrap log output in a JSON document, such as Docker and Kubernetes.

Results

Subject Result
Filebeat ✅
FluentBit ❌
FluentD ✅
Logstash ✅
Splunk HF ✅
Splunk UF ✅
Vector ✅

Design

The subject is configured to:

  1. Receive the following data:

    {"log":"{\"message\":\"Hello world\"}"}

  2. Parse the data as JSON

  3. Output the data, re-encoded as JSON

Try It

You can run this test via:

test -t wrapped_json_correctness

Resources