笔者现在公司项目大部分是PHP进行开发&＃xff0c;要完成整体微服务化必须要考虑PHP使用上的可行性&＃xff0c;Grpc也是支持PHP作为client端发起Grpc请求&＃xff0c;但是依赖的扩展等都相对复杂&＃xff08;毕竟不是亲儿子&＃xff09;&＃xff0c;那么本文就接受怎么使用PHP调用Grpc服务。
附上:
喵了个咪的博客&＃xff1a;w-blog.cn
博文实例demo&＃xff1a;GitHub - sunmi-OS/grpc-php-to-golang-demo
grpc官网&＃xff1a;grpc / grpc.io
protobuf代码仓库&＃xff1a;Releases · protocolbuffers/protobuf · GitHub
一&＃xff0c;初始化PHP环境
PHP在使用过程中依赖一下几项内容
1、先编译grpcphpplugin
> git clone https://github.com/grpc/grpc.git
> cd grpc
> git pull --recurse-submodules && git submodule update --init --recursive
> make
> sudo make install
# make install 会在 /usr/local/bin 目录下生成以下文件
#grpc_cpp_plugin
#grpc_csharp_plugin
#grpc_node_plugin
#grpc_objective_c_plugin
#grpc_php_plugin
#grpc_python_plugin
#grpc_ruby_plugin# 或者只变编译grpc_php_plugin
> make grpc_php_plugin
Package libcares was not found in the pkg-config search path.
Perhaps you should add the directory containing &＃96;libcares.pc&＃39;
to the PKG_CONFIG_PATH environment variable
No package &＃39;libcares&＃39; found
[C] Compiling third_party/address_sorting/address_sorting.c
[C] Compiling third_party/address_sorting/address_sorting_posix.c
[C] Compiling third_party/address_sorting/address_sorting_windows.c
[AR] Creating /Users/wenzhenxi/Downloads/grpc/libs/opt/libaddress_sorting.a
[HOSTCXX] Compiling src/compiler/cpp_generator.cc
[HOSTCXX] Compiling src/compiler/csharp_generator.cc
[HOSTCXX] Compiling src/compiler/node_generator.cc
[HOSTCXX] Compiling src/compiler/objective_c_generator.cc
[HOSTCXX] Compiling src/compiler/php_generator.cc
[HOSTCXX] Compiling src/compiler/python_generator.cc
[HOSTCXX] Compiling src/compiler/ruby_generator.cc
[AR] Creating /Users/wenzhenxi/Downloads/grpc/libs/opt/libgrpc_plugin_support.a
[HOSTCXX] Compiling src/compiler/php_plugin.cc
Package libcares was not found in the pkg-config search path.
Perhaps you should add the directory containing &＃96;libcares.pc&＃39;
to the PKG_CONFIG_PATH environment variable
No package &＃39;libcares&＃39; found
Package libcares was not found in the pkg-config search path.
Perhaps you should add the directory containing &＃96;libcares.pc&＃39;
to the PKG_CONFIG_PATH environment variable
No package &＃39;libcares&＃39; found
[HOSTLD] Linking /Users/wenzhenxi/Downloads/grpc/bins/opt/grpc_php_plugin
最终得到了grpcphpplugin
2、安装PHP运行依赖
最简单的方式就是直接通过pecl进行安装&＃xff1a;
pecl install grpc
pecl install protobuf
如果无法使用pecl可以使用编译的方式进行安装&＃xff0c;PHP依赖的源文件已经存放在grpc中&＃xff1a;
> cd grpc/src/php/ext/grpc
> phpize
> ./configure
> make
> sudo make install> git clone https://github.com/allegro/php-protobuf
> phpize
> ./configure
> make
> sudo make install
最后需要在php.ini里面增加如下内容&＃xff1a;
extension&＃61;grpc.so
extension&＃61;protobuf.so
通过phpinfo(); 可以正常看到这两个模块正常即可
PS&＃xff1a;protobuf可以不通过扩展的方式通过composer引入也可&＃xff0c;对效率来说更加推荐通过SO扩展&＃xff0c;demo中已经准备了7.1和7.2版本的so文件
二&＃xff0c;生成 PHP protobuf 文件
> cd $GOPATH/src/grpc-php-to-golang-demo/protobuf
> mkdir -p php-client/helloworld
> protoc --proto_path&＃61;./ --php_out&＃61;php-client/helloworld --grpc_out&＃61;php-client/helloworld --plugin&＃61;protoc-gen-grpc&＃61;../grpc_php_plugin-all/osx-64/grpc_php_plugin helloworld.proto
> cd php-client/helloworld/
> ll
total 0
drwxr-xr-x 4 wenzhenxi staff 128 2 15 15:09 ./
drwxr-xr-x 3 wenzhenxi staff 96 2 15 15:09 ../
drwxr-xr-x 3 wenzhenxi staff 96 2 15 15:09 GPBMetadata/
drwxr-xr-x 5 wenzhenxi staff 160 2 15 15:09 Helloworld/
三&＃xff0c;使用PHP调用go服务
拷贝依赖文件&＃xff1a;
cd $GOPATH/src/grpc-php-to-golang-demo
mkdir -p php
cd php
mv $GOPATH/src/grpc-php-to-golang-demo/protobuf/php-client/helloworld helloworld
使用composer获取依赖文件&＃xff1a;
> vim composer.json{"name": "grpc/grpc-demo","description": "gRPC example for PHP","require": {"grpc/grpc": "^v1.3.0"},"autoload": {"psr-4": {"": "route_guide/"}}
}> composer install
编写测试文件&＃xff1a;
> vim client.phprequire &＃39;vendor/autoload.php&＃39;;include_once &＃39;helloworld/Helloworld/GreeterClient.php&＃39;;
include_once &＃39;helloworld/Helloworld/HelloReply.php&＃39;;
include_once &＃39;helloworld/Helloworld/HelloRequest.php&＃39;;
include_once &＃39;helloworld/GPBMetadata/Helloworld.php&＃39;;function greet($name)
{$client &＃61; new HelloworldGreeterClient(&＃39;localhost:50051&＃39;, [&＃39;credentials&＃39; &＃61;> GrpcChannelCredentials::createInsecure(),]);$request &＃61; new HelloworldHelloRequest();$request->setName($name);list($reply, $status) &＃61; $client->SayHello($request)->wait();$message &＃61; $reply->getMessage();return $message;
}$name &＃61; !empty($argv[1]) ? $argv[1] : &＃39;world&＃39;;
echo greet($name)."n";
结果&＃xff1a;
> php client.php
holle world
京公网安备 11010802041100号