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Server.cpp
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Server.cpp
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#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0600 // at least windows vista required for grpc
#endif
#include "Server.hpp"
#include "eyaml/eyaml.h"
#include "server.grpc.pb.h"
#include <grpc/grpc.h>
#include <grpc++/server.h>
#include <grpc++/server_builder.h>
#include <grpc++/server_context.h>
#include <boost/filesystem.hpp>
#include <memory>
#include <future>
using namespace grpc;
using namespace buffers;
class CompilerServiceImpl final : public Compiler::Service {
public:
explicit CompilerServiceImpl(EnigmaPlugin& plugin, OptionsParser& options, CallBack &ecb):
plugin(plugin), options(options), ecb(ecb) {}
Status CompileBuffer(ServerContext* /*context*/, const CompileRequest* request, ServerWriter<CompileReply>* writer) override {
// use lambda capture to contain compile logic
auto fnc = [=] {
const CompileRequest req = *request;
plugin.BuildGame(const_cast<buffers::Game*>(&req.game()), emode_run, req.name().c_str());
};
// asynchronously launch the compile request
std::future<void> future = std::async(fnc);
// provide compile feedback to the client
while (future.wait_for(std::chrono::seconds(0)) != std::future_status::ready) {
CompileReply reply;
ecb.ProcessOutput();
reply.mutable_progress()->CopyFrom(ecb.GetProgress());
bool end = false;
const LogMessage msg = ecb.GetFirstLogMessage(end);
if (end) continue;
reply.add_message()->CopyFrom(msg);
while (true) {
const LogMessage nxt = ecb.GetNextLogMessage(end);
if (end) { ecb.ClearLogMessages(); break; }
reply.add_message()->CopyFrom(nxt);
}
writer->Write(reply);
}
return Status::OK;
}
Status GetResources(ServerContext* /*context*/, const Empty* /*request*/, ServerWriter<Resource>* writer) override {
const char* raw = plugin.FirstResource();
while (!plugin.ResourcesAtEnd()) {
Resource resource;
resource.set_name(raw);
resource.set_is_function(plugin.ResourceIsFunction());
if (resource.is_function()) {
resource.set_arg_count_min(plugin.ResourceArgCountMin());
resource.set_arg_count_max(plugin.ResourceArgCountMax());
resource.set_overload_count(plugin.ResourceOverloadCount());
}
resource.set_is_type_name(plugin.ResourceIsTypeName());
resource.set_is_global(plugin.ResourceIsGlobal());
for (int i = 0; i < resource.overload_count(); ++i) {
resource.add_parameters(plugin.ResourceParameters(i));
}
if (!plugin.ResourcesAtEnd()) {
resource.set_is_end(false);
raw = plugin.NextResource();
} else {
resource.set_is_end(true);
}
writer->Write(resource);
}
return Status::OK;
}
Status GetSystems(ServerContext* /*context*/, const Empty* /*request*/, ServerWriter<SystemType>* writer) override {
auto _api = this->options.GetAPI();
for (auto systems : _api) {
SystemType system;
system.set_name(systems.first);
for (auto&& subsystem : systems.second) {
SystemInfo* subInfo = system.add_subsystems();
std::ifstream ifabout(subsystem, std::ios_base::in);
if (!ifabout.is_open()) continue;
ey_data about = parse_eyaml(ifabout, subsystem);
std::string name = about.get("name");
std::string id = about.get("identifier");
std::string desc = about.get("description");
std::string author = about.get("author");
std::string target = about.get("target-platform");
if (id.empty())
id = about.get("id"); // allow alias
if (id.empty()) {
// compilers use filename minus ext as id
boost::filesystem::path ey(subsystem);
id = ey.stem().string();
}
// allow author alias used by compiler descriptors
if (author.empty())
author = about.get("maintainer");
subInfo->set_name(name);
subInfo->set_id(id);
subInfo->set_description(desc);
subInfo->set_author(author);
subInfo->set_target(target);
}
writer->Write(system);
}
return Status::OK;
}
SyntaxError GetSyntaxError(syntax_error* err) {
SyntaxError error;
error.set_message(err->err_str);
error.set_line(err->line);
error.set_position(err->position);
error.set_absolute_index(err->absolute_index);
return error;
}
Status SetDefinitions(ServerContext* /*context*/, const SetDefinitionsRequest* request, SyntaxError* reply) override {
syntax_error* err = plugin.SetDefinitions(request->code().c_str(), request->yaml().c_str());
reply->CopyFrom(GetSyntaxError(err));
return Status::OK;
}
Status SetCurrentConfig(ServerContext* /*context*/, const SetCurrentConfigRequest* request, Empty* /*reply*/) override {
std::string yaml = this->options.APIyaml(&request->settings());
/*syntax_error* err = */plugin.SetDefinitions("", yaml.c_str());
return Status::OK;
}
Status SyntaxCheck(ServerContext* /*context*/, const SyntaxCheckRequest* request, SyntaxError* reply) override {
vector<const char*> script_names;
script_names.reserve(request->script_names().size());
for (const std::string &str : request->script_names()) script_names.push_back(str.c_str());
syntax_error* err = plugin.SyntaxCheck(request->script_count(), script_names.data(), request->code().c_str());
reply->CopyFrom(GetSyntaxError(err));
return Status::OK;
}
private:
EnigmaPlugin& plugin;
OptionsParser& options;
CallBack &ecb;
};
int RunServer(const std::string& address, EnigmaPlugin& plugin, OptionsParser &options, CallBack &ecb) {
CompilerServiceImpl service(plugin, options, ecb);
ServerBuilder builder;
builder.AddListeningPort(address, grpc::InsecureServerCredentials());
builder.RegisterService(&service);
std::unique_ptr<Server> server(builder.BuildAndStart());
std::cout << "Server listening on " << address << std::endl;
server->Wait();
return 0;
}