examples/cpp/gcp_observability/helloworld/client_config.json

{
  "cloud_monitoring": {},
  "cloud_trace": {
    "sampling_rate": 1.0
  },
  "cloud_logging": {
    "client_rpc_events": [{
      "methods": ["*"]
    }],
    "server_rpc_events": [{
      "methods": ["*"]
    }]
  },
  "labels": {
    "environment" : "example-client"
  }
}