A small set of example projects for the Please build system.
There are examples for all natively supported languages (Go, Python, C++ and Java), implementing a gRPC client and server for each language, a library implementing their functionality and a test on it. Each of them have the required set of third-party libraries which show how those are written for each language.
There's also a set of integration tests pitting each client against each server, which illustrate a more advanced use of custom build rules and the ability to script things in BUILD files.
You can build everything and run all the tests by simply running
./pleasew test, although see below for notes on language support.
Note that you will need to have the gRPC codegen plugins installed for C++ and Python in order to run those tests. Currently that requires compiling and installing it (see their instructions for details) which can be a bit involved.
If you'd like to get a feeling for Please without that, it's possible to run just the Go and Java tests without global dependencies (other than having Go and a JDK installed, of course) by running the following:
./pleasew test -i go -i java -o proto.language:go,java
or if you want to run just a single language at a time:
./pleasew test -i go -o proto.language:go
./pleasew test -i java -o proto.language:java