docs/serving/samples/grpc-ping-go

gRPC Ping

A simple gRPC server written in Go that you can use for testing.

This sample is dependent on this issue to be complete.

Prerequisites

1. Install Knative
2. Install docker

Build and run the gRPC server

Build and run the gRPC server. This command will build the server and use kubectl to apply the configuration.

REPO="gcr.io/<your-project-here>"

# Build and publish the container, run from the root directory.
docker build \
  --build-arg SAMPLE=grpc-ping \
  --build-arg BUILDTAG=grpcping \
  --tag "${REPO}/sample/grpc-ping" \
  --file=sample/grpc-ping/Dockerfile .
docker push "${REPO}/sample/grpc-ping"

# Replace the image reference with our published image.
perl -pi -e "s@github.com/knative/serving/sample/grpc-ping@${REPO}/sample/grpc-ping@g" sample/grpc-ping/*.yaml

# Deploy the Knative sample
kubectl apply -f sample/grpc-ping/sample.yaml

Use the client to stream messages to the gRPC server

1. Fetch the created ingress hostname and IP.

# Put the Host name into an environment variable.
export SERVICE_HOST=`kubectl get route grpc-ping -o jsonpath="{.status.domain}"`

# Put the ingress IP into an environment variable.
export SERVICE_IP=`kubectl get svc knative-ingressgateway -n istio-system -o jsonpath="{.status.loadBalancer.ingress[*].ip}"`

1. Use the client to send message streams to the gRPC server

go run -tags=grpcping sample/grpc-ping/client/client.go -server_addr="$SERVICE_IP:80" -server_host_override="$SERVICE_HOST"