This is the C++ client/worker library for the Ecumene RPC protocol.
#Features
- Fast: Ecumene is based on ZeroMQ and MessagePack, without the overhead of HTTP.
- Natural: Ecumene is designed with the interoperability with native function calls in mind, and tries to abstract away the difference between local and remote function calls.
- Composable: Ecumene supports the idea of "composable services," where network services can be composed the same way as higher-order functions.
myclient.cpp:
#include <iostream>
#include <string>
#include <ecumene/function.h>
using namespace std;
using namespace ecumene;
void handleError(exception_ptr eptr);
Function<string(string)> greet("myapp.greet");
int main()
{
// Synchronous call
cout << greet("Zizheng") << endl;
// Synchronous call with error handling
try {
cout << greet("Zizheng") << endl;
} catch (const exception &e) {
cout << "ERROR: " << e.what() << endl;
}
// Asynchronous call with future
auto f = greet.getFuture("Zizheng");
// Do something else...
cout << f.get() << endl;
// Asynchronous call with callback
greet.withCallback("Zizheng", [](const string &s) {
cout << s << endl;
}, [](exception_ptr eptr) {
handleError(eptr);
});
cin.get();
return 0;
}
void handleError(exception_ptr eptr)
{
try {
rethrow_exception(eptr);
} catch (const exception &e) {
cout << "ERROR: " << e.what() << endl;
}
}myworker.cpp:
#include <iostream>
#include <string>
#include <ecumene/function_impl.h>
using namespace std;
using namespace ecumene;
FunctionImpl<string(string)> greet("myapp.greet", "tcp://*:5555", "tcp://127.0.0.1:5555",
[](string name) {
return name + ", welcome to Ecumene!";
});
int main()
{
cin.get();
return 0;
}Compile with g++ -std=c++14 -Wall -Wextra -pedantic -O3 -pthread -o myclient myclient.cpp -lczmq -lecumene and g++ -std=c++14 -Wall -Wextra -pedantic -O3 -pthread -o myworker myworker.cpp -lczmq -lecumene.
Then run ./myworker followed by ./myclient.
ecumene-cpp is licensed under the GNU Lesser General Public License v3.0. See the LICENSE file for details.