Done while following this guide Udemy course: https://www.udemy.com/grpc-golang/

Three different go packages. All have to do with learning gRPC and are independent from each other

• Demoes types of gRPC communication (check it's proto file)
• Uses SSL unlike the other two services
• Proper gRPC error handling examples
• Proper deadline examples

• Lessons learned from greet. Where greet was instructor lead, calculator was meant for students to figure out their own solution
• Not sure if it has proper eror/deadline examples. I might have implemented some.

• CRUD demonstration with a "blog" app.
• Instructor lead, but I deviated and used DynamoDB.
• If you are using my docker-compose.yml, there will be no need to worry about AWS credentials and region setup as I'm using a "dynamodb-local" image to provide the DynamoDB functionality.
• Only of the three that uses DynamoDB
• Not sure if it has proper eror/deadline examples. I might have implemented some.

Requires:

• docker
• docker-compose
• Optional (if you want to mess around with files directly without docker-compose)
  • GoLang 1.12+
  • Properly set-up GoLang environment (GOROOT/GOHOME)
  • make

docker-compose up

Skip this if you just want to explore with Evans

## GREET

# Grabbing the SSL cert. Needed for greet_client because that has an SSL example
docker cp grpc_greet_1:/code/ssl/server.crt ssl/server.crt
go run github.com/Kaurin/gRPC/greet/greet_client

## CALCULATOR
go run github.com/Kaurin/gRPC/calculator/calculator_client

### BLOG
go run github.com/Kaurin/gRPC/blog/blog_client

Unfortunately, Evans doesn't support a simple "go get -u" :(

# Install the "evans" utility. Check the Makefile for details
make evans

## GREET
# Grabbing the SSL cert. Needed for greet_client because that has an SSL example
docker cp grpc_greet_1:/code/ssl/server.crt ssl/server.crt
evans -p 50052 --tls --host localhost --cacert ssl/server.crt --reflection

## CALCULATOR
evans -p 50053 -r

## BLOG
evans -p 50051 -r

What you want in all three is to use call <functionName>.

Evans has tab-compoletion, but if you want to see all functions in a given run, then use show rpc.

Also, you can use ctrl+d to end sending messages in examples that require it, or to just bail on input.

Don't forget to run:

docker-compose down

WARNING Please make sure to read the makefile before running the command

make cleanimages