CentOS7.6下搭建GRPC环境
2020-02-13 本文已影响0人
我也有键盘
近日有个需求，要从java端调用C++的服务，和团队大佬一番讨论后最后选用grpc。
- pre-build
yum install git
yum install -y gcc-c++ autoconf libtool
yum groupinstall -y "Development Tools"
- 下载grpc源码及相关子模块
git clone -b v1.18.0 https://github.com/grpc/grpc.git
cd grpc
git submodule update --init
- 编译安装protobuf
cd third_party/protobuf/
./autogen
./configure
make
make install
# refresh shared library cache
ldconfig
#检验
protoc --version
- 安装grpc
#cd到grpc 目录
cd ../../
make
make install
第四步可能报错，因为third_party下zlib缺少zonf.h. 不要慌，到zlib下执行./configure, 然后重新执行第4步安装grpc
cd third_party/zlib
./configure
- 运行demo
安装grpc完成后，编译一下helloworld看看能否运行
cd examples/cpp/helloworld/
make
但是因为缺少PKG_CONFIG_PATH爆错了：
Package protobuf was not found in the pkg-config search path.
Perhaps you should add the directory containing `protobuf.pc'
to the PKG_CONFIG_PATH environment variable
No package 'protobuf' found
Package grpc was not found in the pkg-config search path.
Perhaps you should add the directory containing `grpc.pc'
to the PKG_CONFIG_PATH environment variable
...
因此，先配置环境变量. 在grpc目录下新增文件activate.sh
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
export PATH=$PATH:$DIR/bins/opt:$DIR/bins/opt/protobuf
export CPATH=$DIR/include:$DIR/third_party/protobuf/src
export LIBRARY_PATH=$DIR/libs/opt:$DIR/libs/opt/protobuf
export PKG_CONFIG_PATH=$DIR/libs/opt/pkgconfig:$DIR/third_party/protobuf
export LD_LIBRARY_PATH=$DIR/libs/opt
然后执行
source activate.sh
cd examples/cpp/helloworld/
make
不出意外的话，编译成功。运行./greeter.server启动服务器
c++服务监听.png
-
在java代码中调用（参考博客2）
java调用demo.png
-
可能遇到端口50051打不开导致java端连不上的问题，打开linux防火墙
firewall-cmd --list-all
firewall-cmd --add-port=50051/tcp --permanent
firewall-cmd --reload
-
参考博客
感谢这两篇博客，亲测有用
