The GCP Observability example consists of a Hello World client and a Hello World server instrumented for logs, metrics and tracing.

Please refer to Microservices Observability user guide for setup.

Build the Observability client & server. From the grpc-java/examples/example-gcp-observability directory:

$ ../gradlew installDist

This creates the scripts build/install/example-gcp-observability/bin/gcp-observability-client and build/install/example-gcp-observability/bin/gcp-observability-server.

To use Observability, you should first setup and configure authorization as mentioned in the user guide.

You need to set the GRPC_GCP_OBSERVABILITY_CONFIG_FILE environment variable to point to the gRPC GCP Observability configuration file (preferred) or if that is not set then GRPC_GCP_OBSERVABILITY_CONFIG environment variable to gRPC GCP Observability configuration value. This is needed by both build/install/example-gcp-observability/bin/gcp-observability-client and build/install/example-gcp-observability/bin/gcp-observability-server.

1. To start the observability-enabled example server on its default port of 50051, run:

$ export GRPC_GCP_OBSERVABILITY_CONFIG_FILE=src/main/resources/io/grpc/examples/gcpobservability/gcp_observability_server_config.json
$ ./build/install/example-gcp-observability/bin/gcp-observability-server

2. In a different terminal window, run the observability-enabled example client:

$ export GRPC_GCP_OBSERVABILITY_CONFIG_FILE=src/main/resources/io/grpc/examples/gcpobservability/gcp_observability_client_config.json
$ ./build/install/example-gcp-observability/bin/gcp-observability-client