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update(userspace/falco): reorganize grpc server

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Co-authored-by: Lorenzo Fontana <lo@linux.com>
Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>
This commit is contained in:
Leonardo Di Donato 2019-09-03 10:27:47 +00:00 committed by Leo Di Donato
parent 5d0266a09e
commit abfd6d8a1a
2 changed files with 85 additions and 80 deletions
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131
userspace/falco/grpc_server.cpp
View File

@ -17,9 +17,6 @@ limitations under the License.
*/
#include <iostream>
#include <memory>
#include <string>
#include <thread>
#ifdef GRPC_INCLUDE_IS_GRPCPP
#include <grpcpp/grpcpp.h>
@ -28,8 +25,7 @@ limitations under the License.
#endif
#include "grpc_server.h"
#include "falco_output.grpc.pb.h"
#include "falco_output.pb.h"
#include "grpc_context.h"
bool grpc_server_impl::is_running()
{
@ -37,83 +33,60 @@ bool grpc_server_impl::is_running()
return true;
}
class grpc_server : public grpc_server_impl
void grpc_server::thread_process(int thread_index)
{
public:
grpc_server(const char* server_addr, int threadiness):
server_addr(server_addr),
threadiness(threadiness)
// TODO: is this right? That's what we want?
// Tell pthread to not handle termination signals in the current thread
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGHUP);
sigaddset(&set, SIGINT);
pthread_sigmask(SIG_BLOCK, &set, nullptr);
void* tag = nullptr;
bool event_read_success = false;
while(m_completion_queue->Next(&tag, &event_read_success))
{
}
virtual ~grpc_server() = default;
// Run() is blocked. It doesn't return until Stop() is called from another thread.
void Run();
void thread_process(int threadIndex)
{
// TODO: is this right? That's what we want?
// Tell pthread to not handle termination signals in the current thread
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGHUP);
sigaddset(&set, SIGINT);
pthread_sigmask(SIG_BLOCK, &set, nullptr);
void* tag = nullptr;
bool eventReadSuccess = false;
while(completion_queue->Next(&tag, &eventReadSuccess))
if(tag == nullptr)
{
if(tag == nullptr)
{
// TODO: empty tag returned, log, what to do?
continue;
}
// TODO: empty tag returned, log, what to do?
continue;
}
}
// There is no shutdown handling in this code.
void run()
{
grpc::ServerBuilder builder;
// Listen on the given address without any authentication mechanism.
builder.AddListeningPort(server_addr, grpc::InsecureServerCredentials());
// builder.RegisterService(&falco_output_svc); // TODO: enable this when we do the impl
completion_queue = builder.AddCompletionQueue();
server = builder.BuildAndStart();
std::cout << "Server listening on " << server_addr << std::endl;
// int context_count = threadiness * 10;
threads.resize(threadiness);
int thread_idx = 0;
for(std::thread& thread : threads)
{
thread = std::thread(&grpc_server::thread_process, this, thread_idx++);
}
while(is_running())
{
}
}
private:
// FalcoOutputService::AsyncService falco_output_svc;
std::unique_ptr<grpc::Server> server;
std::string server_addr;
int threadiness = 0;
std::unique_ptr<grpc::ServerCompletionQueue> completion_queue;
std::vector<std::thread> threads;
};
bool start_grpc_server(unsigned short port, int threadiness)
{
// TODO: make bind address configurable
std::string server_addr = "0.0.0.0:" + std::to_string(port);
grpc_server srv(server_addr.c_str(), threadiness);
srv.run();
return true;
}
void grpc_server::run()
{
grpc::ServerBuilder builder;
// Listen on the given address without any authentication mechanism.
builder.AddListeningPort(m_server_addr, grpc::InsecureServerCredentials());
// builder.RegisterService(&falco_output_svc); // TODO: enable this when we do the impl
m_completion_queue = builder.AddCompletionQueue();
m_server = builder.BuildAndStart();
std::cout << "Server listening on " << m_server_addr << std::endl;
// int context_count = threadiness * 10;
m_threads.resize(m_threadiness);
int thread_idx = 0;
for(std::thread& thread : m_threads)
{
thread = std::thread(&grpc_server::thread_process, this, thread_idx++);
}
while(is_running())
{
}
}
void grpc_server::subscribe_handler(const stream_context& ctx, falco_output_request req, falco_output_response res)
{
}
void start_grpc_server(std::string server_address, int threadiness)
{
grpc_server srv(server_address, threadiness);
srv.run();
}

34
userspace/falco/grpc_server.h
View File

@ -18,6 +18,13 @@ limitations under the License.
#pragma once
#include <thread>
#include <string>
#include "falco_output.grpc.pb.h"
#include "falco_output.pb.h"
#include "grpc_context.h"
class grpc_server_impl
{
public:
@ -26,6 +33,31 @@ public:
protected:
bool is_running();
void subscribe_handler(const stream_context& ctx, falco_output_request req, falco_output_response res);
};
bool start_grpc_server(unsigned short port, int threadiness);
class grpc_server : public grpc_server_impl
{
public:
grpc_server(std::string server_addr, int threadiness):
m_server_addr(server_addr),
m_threadiness(threadiness)
{
}
virtual ~grpc_server() = default;
void thread_process(int thread_index);
void run();
void subscribe_handler(const stream_context& ctx, falco_output_request req, falco_output_response res);
private:
// falco_output_service::AsyncService falco_output_svc;
std::unique_ptr<grpc::Server> m_server;
std::string m_server_addr;
int m_threadiness = 0;
std::unique_ptr<grpc::ServerCompletionQueue> m_completion_queue;
std::vector<std::thread> m_threads;
};
void start_grpc_server(std::string server_address, int threadiness);