Generating PHP library with Dockerized gRPC - docker

Question

I'm trying to build a gRPC PHP Client and gRPC NodeJs Server in docker. But the problem is I can't install protoc-gen-php-grpc to my docker server. When I try to run this run this makefile:
proto_from_within_container:
# PHP
protoc /var/www/protos/smellycat.proto \
--php_out=/var/www/php-client/src \
$(: 👇 generate server interface) \
--php-grpc_out=/var/www/php-client/src \
$(: 👇 generates the client code) \
--grpc_out=/var/www/php-client/src \
--plugin=protoc-gen-grpc=/protobuf/grpc/bins/opt/grpc_php_plugin \
--proto_path /var/www/protos
proto:
powershell rm -r -fo php-client/src -ErrorAction SilentlyContinue
powershell New-Item -ItemType Directory -Path php-client/src -Force -ErrorAction SilentlyContinue
docker-compose run grpc-server make proto_from_within_container
With this command: make proto
Getting this error message after docker containers builded:
protoc /var/www/protos/smellycat.proto \
--php_out=/var/www/php-client/src \
\
--php-grpc_out=/var/www/php-client/src \
\
--grpc_out=/var/www/php-client/src \
--plugin=protoc-gen-grpc=/protobuf/grpc/bins/opt/grpc_php_plugin \
--proto_path /var/www/protos
protoc-gen-php-grpc: program not found or is not executable
Please specify a program using absolute path or make sure the program is available in your PATH system variable
--php-grpc_out: protoc-gen-php-grpc: Plugin failed with status code 1.
Makefile:4: recipe for target 'proto_from_within_container' failed
make: *** [proto_from_within_container] Error 1
This is my docker-compose file
version: "3"
services:
grpc-server:
container_name: grpc-server
build:
context: .
dockerfile: Dockerfile-server
working_dir: /var/www
volumes:
- .:/var/www
grpc-client:
image: php:7.4-cli
container_name: grpc-client
build:
context: .
dockerfile: Dockerfile-client
working_dir: /var/www
volumes:
- .:/var/www
command: bash -c [php php_client.php && composer install]
And this is my grpc-server docker file:
FROM node:latest
ENV DEBIAN_FRONTEND=noninteractive
#Versions
ARG PROTOBUF_VERSION=3.14.0
ARG PHP_GRPC_VERSION=1.34.0
# Utils
RUN apt-get update -yqq \
&& apt-get install -yqq wget unzip zlib1g-dev git autoconf libtool automake build-essential software-properties-common curl zip \
&& rm -rf /var/lib/apt/lists/*
# Protobuf
RUN mkdir -p /protobuf
RUN cd /protobuf \
&& wget https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOBUF_VERSION}/protoc-${PROTOBUF_VERSION}-linux-x86_64.zip -O protobuf.zip \
&& unzip protobuf.zip && rm protobuf.zip
# grpc PHP (generate client)
RUN apt-get update -yqq && apt-get upgrade -yqq
RUN apt-get install php php-dev php-pear phpunit zlib1g-dev -yqq
RUN pecl install grpc-${PHP_GRPC_VERSION}
RUN cd /protobuf && git clone -b v${PHP_GRPC_VERSION} https://github.com/grpc/grpc \
&& cd /protobuf/grpc && git submodule update --init
RUN cd /protobuf/grpc && make grpc_php_plugin
ENV PATH "/protobuf/bin:${PATH}"
ENV PATH "/protobuf/grpc/bins/opt:${PATH}"
# NPM Installation
WORKDIR /var/www
COPY . /var/www
RUN npm install
CMD ["node", "server.js"]
Do you have any advice?

Answer 1

After a lot of search and readings, I finally managed to build a full application that communicates with each other.
The problem was at the Makefile, at this step:
--plugin=protoc-gen-grpc=/protobuf/grpc/bins/opt/grpc_php_plugin
I was assigning the wrong path for grpc_php_plugin.
There is my new dockerfile:
FROM php:7.4-cli
# Environment variables
ENV DEBIAN_FRONTEND=noninteractive
# Utils
RUN apt-get update -yqq && \
apt-get upgrade -yqq && \
apt-get install -y unzip build-essential git software-properties-common curl pkg-config zip zlib1g-dev
# Composer installation
COPY --from=composer:latest /usr/bin/composer /usr/local/bin/composer
# Install grpc and probuf with pecl
RUN pecl install grpc && pecl install protobuf
# Enable grpc and protobuf extensions in php.ini file
RUN echo starting && \
docker-php-ext-enable grpc && \
docker-php-ext-enable protobuf
# Install cmake
RUN apt-get update -yqq && apt-get -y install cmake
# Install grpc_php_plugin and protoc
RUN git clone -b v1.36.2 https://github.com/grpc/grpc && \
cd grpc && git submodule update --init && \
mkdir cmake/build && cd cmake/build && \
cmake ../.. && make protoc grpc_php_plugin
# Setting node, protoc and grpc_php_plugin paths
ENV PATH "/grpc/cmake/build:${PATH}"
ENV PATH "/grpc/cmake/build/third_party/protobuf:${PATH}"
# Moving client folder to vm
WORKDIR /var/www
COPY ./client /var/www
# Packages
RUN composer install
# Generate php libraries from proto file
RUN make proto
CMD [ "php", "./handler.php" ]
For my full application, click.