tools: add ceph_monstore_tool with getosdmap

Signed-off-by: Samuel Just <sam.just@inktank.com>

2 files changed, 139 insertions, 0 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index c4e08ba1d79..476c80e8027 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -128,6 +128,13 @@ ceph_filestore_dump_LDADD += -ldl
 endif
 bin_PROGRAMS += ceph ceph-conf ceph-authtool ceph_filestore_dump
 
+ceph_monstore_tool_SOURCES = tools/ceph-monstore-tool.cc \
+			  os/LevelDBStore.cc
+ceph_monstore_tool_LDFLAGS = ${AM_LDFLAGS}
+ceph_monstore_tool_LDADD =  $(LIBOS_LDA) $(LIBGLOBAL_LDA) -lboost_program_options
+ceph_monstore_tool_CXXFLAGS = ${AM_CXXFLAGS} ${UNITTEST_CXXFLAGS}
+bin_PROGRAMS += ceph_monstore_tool
+
 monmaptool_SOURCES = monmaptool.cc
 monmaptool_LDADD = $(LIBGLOBAL_LDA)
 crushtool_SOURCES = crushtool.cc
diff --git a/src/tools/ceph-monstore-tool.cc b/src/tools/ceph-monstore-tool.cc
new file mode 100644
index 00000000000..9b6a22afd02
--- /dev/null
+++ b/src/tools/ceph-monstore-tool.cc
@@ -0,0 +1,132 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+* Ceph - scalable distributed file system
+*
+* Copyright (C) 2012 Inktank, Inc.
+*
+* This is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License version 2.1, as published by the Free Software
+* Foundation. See file COPYING.
+*/
+#include <boost/scoped_ptr.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/program_options/option.hpp>
+#include <boost/program_options/options_description.hpp>
+#include <boost/program_options/variables_map.hpp>
+#include <boost/program_options/cmdline.hpp>
+#include <boost/program_options/parsers.hpp>
+#include <iostream>
+#include <set>
+#include <sstream>
+#include <stdlib.h>
+#include <fstream>
+#include <string>
+#include <sstream>
+#include <map>
+#include <set>
+#include <boost/scoped_ptr.hpp>
+
+#include "global/global_init.h"
+#include "os/LevelDBStore.h"
+#include "mon/MonitorDBStore.h"
+
+namespace po = boost::program_options;
+using namespace std;
+
+int main(int argc, char **argv) {
+  po::options_description desc("Allowed options");
+  int version = -1;
+  string store_path, cmd, out_path;
+  desc.add_options()
+    ("help", "produce help message")
+    ("mon-store-path", po::value<string>(&store_path),
+     "path to mon directory, mandatory")
+    ("out", po::value<string>(&out_path),
+     "out path")
+    ("version", po::value<int>(&version),
+     "version requested")
+    ("command", po::value<string>(&cmd),
+     "command")
+    ;
+  po::positional_options_description p;
+  p.add("command", 1);
+  p.add("version", 1);
+
+  po::variables_map vm;
+  po::parsed_options parsed =
+    po::command_line_parser(argc, argv).options(desc).positional(p).run();
+  po::store(
+    parsed,
+    vm);
+  try {
+    po::notify(vm);
+  } catch (...) {
+    cout << desc << std::endl;
+    return 1;
+  }
+
+  vector<const char *> ceph_options, def_args;
+  vector<string> ceph_option_strings = po::collect_unrecognized(
+    parsed.options, po::include_positional);
+  ceph_options.reserve(ceph_option_strings.size());
+  for (vector<string>::iterator i = ceph_option_strings.begin();
+       i != ceph_option_strings.end();
+       ++i) {
+    ceph_options.push_back(i->c_str());
+  }
+
+  global_init(
+    &def_args, ceph_options, CEPH_ENTITY_TYPE_OSD,
+    CODE_ENVIRONMENT_UTILITY, 0);
+  common_init_finish(g_ceph_context);
+  g_ceph_context->_conf->apply_changes(NULL);
+  g_conf = g_ceph_context->_conf;
+
+  if (vm.count("help")) {
+    std::cerr << desc << std::endl;
+    return 1;
+  }
+
+  int fd;
+  if (vm.count("out")) {
+    fd = open(out_path.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0666);
+  } else {
+    fd = STDOUT_FILENO;
+  }
+
+  MonitorDBStore st(store_path);
+  stringstream ss;
+  int r = st.open(ss);
+  if (r < 0) {
+    std::cerr << ss.str() << std::endl;
+    goto done;
+  }
+  if (cmd == "getosdmap") {
+    version_t v;
+    if (version == -1) {
+      v = st.get("osdmap", "last_committed");
+    } else {
+      v = version;
+    }
+
+    bufferlist bl;
+    /// XXX: this is not ok, osdmap and full should be abstracted somewhere
+    int r = st.get("osdmap", st.combine_strings("full", v), bl);
+    if (r < 0) {
+      std::cerr << "Error getting map: " << cpp_strerror(r) << std::endl;
+      goto done;
+    }
+    bl.write_fd(fd);
+  } else {
+    std::cerr << "Unrecognized command: " << cmd << std::endl;
+    goto done;
+  }
+
+  done:
+  if (vm.count("out")) {
+    ::close(fd);
+  }
+  return 0;
+}