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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "common/ceph_argparse.h"
#include "common/config.h"
#include "common/debug.h"
#include "common/errno.h"
#include "common/async/context_pool.h"
#include "common/Preforker.h"
#include "global/global_init.h"
#include "global/signal_handler.h"
#include "mon/MonClient.h"
#include "msg/Messenger.h"
#include "Mirror.h"
#include <vector>
void usage() {
std::cout << "usage: cephfs-mirror [options...]" << std::endl;
std::cout << "options:\n";
std::cout << " --mon-host monaddress[:port] connect to specified monitor\n";
std::cout << " --keyring=<path> path to keyring for local cluster\n";
std::cout << " --log-file=<logfile> file to log debug output\n";
std::cout << " --debug-cephfs-mirror=<log-level>/<memory-level> set cephfs-mirror debug level\n";
generic_server_usage();
}
cephfs::mirror::Mirror *mirror = nullptr;
static void handle_signal(int signum) {
if (mirror) {
mirror->handle_signal(signum);
}
}
int main(int argc, const char **argv) {
std::vector<const char*> args;
argv_to_vec(argc, argv, args);
if (args.empty()) {
cerr << argv[0] << ": -h or --help for usage" << std::endl;
::exit(1);
}
if (ceph_argparse_need_usage(args)) {
usage();
::exit(0);
}
auto cct = global_init(nullptr, args, CEPH_ENTITY_TYPE_CLIENT,
CODE_ENVIRONMENT_DAEMON,
CINIT_FLAG_UNPRIVILEGED_DAEMON_DEFAULTS);
Preforker forker;
if (global_init_prefork(g_ceph_context) >= 0) {
std::string err;
int r = forker.prefork(err);
if (r < 0) {
cerr << err << std::endl;
return r;
}
if (forker.is_parent()) {
g_ceph_context->_log->start();
if (forker.parent_wait(err) != 0) {
return -ENXIO;
}
return 0;
}
global_init_postfork_start(g_ceph_context);
}
common_init_finish(g_ceph_context);
bool daemonize = g_conf().get_val<bool>("daemonize");
if (daemonize) {
global_init_postfork_finish(g_ceph_context);
forker.daemonize();
}
init_async_signal_handler();
register_async_signal_handler(SIGHUP, handle_signal);
register_async_signal_handler_oneshot(SIGINT, handle_signal);
register_async_signal_handler_oneshot(SIGTERM, handle_signal);
std::vector<const char*> cmd_args;
argv_to_vec(argc, argv, cmd_args);
Messenger *msgr = Messenger::create_client_messenger(g_ceph_context, "client");
msgr->set_default_policy(Messenger::Policy::lossy_client(0));
std::string reason;
ceph::async::io_context_pool ctxpool(1);
MonClient monc(MonClient(g_ceph_context, ctxpool));
int r = monc.build_initial_monmap();
if (r < 0) {
cerr << "failed to generate initial monmap" << std::endl;
goto cleanup_messenger;
}
msgr->start();
mirror = new cephfs::mirror::Mirror(g_ceph_context, cmd_args, &monc, msgr);
r = mirror->init(reason);
if (r < 0) {
std::cerr << "failed to initialize cephfs-mirror: " << reason << std::endl;
goto cleanup;
}
mirror->run();
delete mirror;
cleanup:
monc.shutdown();
cleanup_messenger:
msgr->shutdown();
msgr->wait();
delete msgr;
unregister_async_signal_handler(SIGHUP, handle_signal);
unregister_async_signal_handler(SIGINT, handle_signal);
unregister_async_signal_handler(SIGTERM, handle_signal);
shutdown_async_signal_handler();
return forker.signal_exit(r);
}
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