Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 124 insertions, 0 deletions

diff --git a/src/tools/cephfs_mirror/main.cc b/src/tools/cephfs_mirror/main.cc
new file mode 100644
index 000000000..efaa89c35
--- /dev/null
+++ b/src/tools/cephfs_mirror/main.cc
@@ -0,0 +1,124 @@
+// -*- 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);
+}