在20.04.4 LTS (Focal Fossa)学习CommonAPI-C---D-Bus

Ubuntu环境

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04.4 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.4 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
 

 步骤1 下载依赖工具

axel -n 10 https://github.com/COVESA/capicxx-core-tools/releases/download/3.2.0.1/commonapi_core_generator.zip
axel -n 10 https://github.com/COVESA/capicxx-dbus-tools/releases/download/3.2.0/commonapi_dbus_generator.zip

解压依赖工具并把依赖工具添加到PATH环境变量

mkdir  commonapi_core_generator

mkdir commonapi_dbus_generator

unzip commonapi_core_generator.zip

unzip commonapi_dbus_generator.zip

export PATH=`realpath commonapi_core_generator`:`realpath commonapi_dbus_generator`:$PATH

 步骤2 Build the CommonAPI Runtime Library

git clone https://github.com/GENIVI/capicxx-core-runtime.git
cd capicxx-core-runtime/
git checkout -b 3.2.0 3.2.0
mkdir -p build
mkdir -p build/_install
cd build
cmake -D CMAKE_INSTALL_PREFIX=${PWD}/_install ..
make -j 8
make install -j8

步骤3  Build the CommonAPI D-Bus Runtime Library

git clone https://github.com/GENIVI/capicxx-dbus-runtime.git

axel -n 10 http://dbus.freedesktop.org/releases/dbus/dbus-1.4.10.tar.gz
tar -xzf dbus-1.4.10.tar.gz
cd dbus-1.4.10/
for i in ../capicxx-dbus-runtime/src/dbus-patches/*.patch; do patch -p1 < $i; done 这个一步有个patch失败，需要手动加这个patch
./configure --prefix=${PWD}/_install
make -C dbus -j 8
make -C dbus install -j 8
make install-pkgconfigDATA
 

cd capicxx-dbus-runtime

git checkout -b 3.2.0 3.2.0
mkdir build
cd build
export PKG_CONFIG_PATH=`realpath ../dbus-1.4.10/_install/lib/pkgconfig`
cmake -DCMAKE_CXX_FLAGS=-DDBUS_TIMEOUT_INFINITE=5000 -DUSE_INSTALLED_COMMONAPI=OFF -DUSE_INSTALLED_DBUS=ON ..
make -j 8

 步骤4 Write the Franca file and generate code

mkdir project
cd project
mkdir fidl
cat > fidl/HelloWorld.fidl << EOF
package commonapi

interface HelloWorld {
  version {major 1 minor 0}
  method sayHello {
    in {
      String name
    }
    out {
      String message
    }
  }
}
EOF

步骤5  Write the client and the service application

mkdir src
cat > src/HelloWorldClient.cpp << EOF
// HelloWorldClient.cpp
#include
#include
#include
#include
#include

using namespace v1_0::commonapi;

int main() {
    std::shared_ptr < CommonAPI::Runtime > runtime = CommonAPI::Runtime::get();
    std::shared_ptr> myProxy =
        runtime->buildProxy("local", "test");

    std::cout << "Checking availability!" << std::endl;
    while (!myProxy->isAvailable())
        usleep(10);
    std::cout << "Available..." << std::endl;

    CommonAPI::CallStatus callStatus;
    std::string returnMessage;
    myProxy->sayHello("Bob", callStatus, returnMessage);
    std::cout << "Got message: '" << returnMessage << "'\n";
    return 0;
}
EOF

cat > src/HelloWorldService.cpp << EOF
// HelloWorldService.cpp
#include
#include
#include
#include "HelloWorldStubImpl.hpp"

using namespace std;

int main() {
    std::shared_ptr runtime = CommonAPI::Runtime::get();
    std::shared_ptr myService =
        std::make_shared();
    runtime->registerService("local", "test", myService);
    std::cout << "Successfully Registered Service!" << std::endl;

    while (true) {
        std::cout << "Waiting for calls... (Abort with CTRL+C)" << std::endl;
        std::this_thread::sleep_for(std::chrono::seconds(30));
    }
    return 0;
 }
EOF

cat > src/HelloWorldStubImpl.hpp << EOF
// HelloWorldStubImpl.hpp
#ifndef HELLOWORLDSTUBIMPL_H_
#define HELLOWORLDSTUBIMPL_H_
#include
#include

class HelloWorldStubImpl: public v1_0::commonapi::HelloWorldStubDefault {
public:
    HelloWorldStubImpl();
    virtual ~HelloWorldStubImpl();
    virtual void sayHello(const std::shared_ptr _client,
        std::string _name, sayHelloReply_t _return);
};
#endif /* HELLOWORLDSTUBIMPL_H_ */
EOF

cat > src/HelloWorldStubImpl.cpp << EOF
// HelloWorldStubImpl.cpp
#include "HelloWorldStubImpl.hpp"

HelloWorldStubImpl::HelloWorldStubImpl() { }
HelloWorldStubImpl::~HelloWorldStubImpl() { }

void HelloWorldStubImpl::sayHello(const std::shared_ptr _client,
    std::string _name, sayHelloReply_t _reply) {
        std::stringstream messageStream;
        messageStream << "Hello " << _name << "!";
        std::cout << "sayHello('" << _name << "'): '" << messageStream.str() << "'\n";

    _reply(messageStream.str());
};
EOF
 

 步骤6 Build and run

cat > CMakeLists.txt << EOF
cmake_minimum_required(VERSION 2.8)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -std=c++0x")
include_directories(
    src-gen
    $ENV{RUNTIME_PATH}/capicxx-core-runtime/include
    $ENV{RUNTIME_PATH}/capicxx-dbus-runtime/include
    $ENV{DBUS_PATH}
)
link_directories(
    $ENV{RUNTIME_PATH}/capicxx-core-runtime/build
    $ENV{RUNTIME_PATH}/capicxx-dbus-runtime/build
    $ENV{DBUS_PATH}/dbus/.libs
)
add_executable(HelloWorldClient
    src/HelloWorldClient.cpp
    src-gen/v1/commonapi/HelloWorldDBusProxy.cpp
    src-gen/v1/commonapi/HelloWorldDBusDeployment
)
target_link_libraries(HelloWorldClient CommonAPI CommonAPI-DBus dbus-1)
add_executable(HelloWorldService
    src/HelloWorldService.cpp
    src/HelloWorldStubImpl.cpp
    src-gen/v1/commonapi/HelloWorldDBusStubAdapter.cpp
    src-gen/v1/commonapi/HelloWorldStubDefault
    src-gen/v1/commonapi/HelloWorldDBusDeployment
)
target_link_libraries(HelloWorldService CommonAPI CommonAPI-DBus dbus-1)
EOF
mkdir build && cd build
export RUNTIME_PATH=`realpath ..` DBUS_PATH=`realpath ../dbus-1.4.10/`
cmake ..
make

./build/HelloWorldService &
./build/HelloWorldClient

目录结构

 $ tree project -L 2
project
├── build
│   ├── CMakeCache.txt
│   ├── CMakeFiles
│   ├── cmake_install.cmake
│   ├── HelloWorldClient
│   ├── HelloWorldService
│   └── Makefile
├── CMakeLists.txt
├── fidl
│   └── HelloWorld.fidl
├── mk
├── src
│   ├── HelloWorldClient.cpp
│   ├── HelloWorldService.cpp
│   ├── HelloWorldStubImpl.cpp
│   └── HelloWorldStubImpl.hpp
└── src-gen
    └── v1

运行效果

 

$ ./build/HelloWorldService &
[1] 3233806
$ [CAPI][INFO] Loading configuration file '/etc/commonapi.ini'
[CAPI][INFO] Using default binding 'dbus'
[CAPI][INFO] Using default shared library folder '/usr/local/lib/commonapi'
Successfully Registered Service!
Waiting for calls... (Abort with CTRL+C)

$ ./build/HelloWorldClient
[CAPI][INFO] Loading configuration file '/etc/commonapi.ini'
[CAPI][INFO] Using default binding 'dbus'
[CAPI][INFO] Using default shared library folder '/usr/local/lib/commonapi'
[CAPI][INFO] subscribeAvailabilityListener service: commonapi.HelloWorld.v1_0_test objectPath: /test interface: commonapi.HelloWorld.v1_0
Checking availability!
Available...
sayHello('Bob'): 'Hello Bob!'
Got message: 'Hello Bob!'
[CAPI][INFO] unsubscribeAvailabilityListener service: commonapi.HelloWorld.v1_0_test objectPath: /test interface: commonapi.HelloWorld.v1_0
$ ./build/HelloWorldClient
[CAPI][INFO] Loading configuration file '/etc/commonapi.ini'
[CAPI][INFO] Using default binding 'dbus'
[CAPI][INFO] Using default shared library folder '/usr/local/lib/commonapi'
[CAPI][INFO] subscribeAvailabilityListener service: commonapi.HelloWorld.v1_0_test objectPath: /test interface: commonapi.HelloWorld.v1_0
Checking availability!
Available...
sayHello('Bob'): 'Hello Bob!'
Got message: 'Hello Bob!'
[CAPI][INFO] unsubscribeAvailabilityListener service: commonapi.HelloWorld.v1_0_test objectPath: /test interface: commonapi.HelloWorld.v1_0
$ fg
./build/HelloWorldService
^C
 

---

 参考：https://github.com/COVESA/capicxx-dbus-tools/wiki/CommonAPI-C---D-Bus-in-10-minutes