Package org.hyperledger.fabric.traces

Supports collection of traces

This creates traces at the root level of chaincode calls. To enable traces ensure that there is a standard format Java properties file called `config.props` in the root of your contract code. For example this path 

 myjava - contract - project / java / src / main / resources / config.props
This should contain the following 
 CHAINCODE_TRACES_ENABLED=true
The traces enabled flag will turn on default traces logging. (it's off by default). If no file is supplied traces are not enabled, the values shown for the thread pool are used.

Open Telemetry

To use Open Telemetry, set the following properties: 
 CHAINCODE_TRACES_ENABLED=true
 CHAINCODE_TRACES_PROVIDER=org.hyperledger.fabric.traces.impl.OpenTelemetryTracesProvider
Additionally, you can set properties after the specification: https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/sdk-environment-variables.md Example: 
 OTEL_EXPORTER_OTLP_ENDPOINT=otelcollector:4317
 OTEL_EXPORTER_OTLP_INSECURE=true