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// -*- 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) 2004-2006 Sage Weil <sage@newdream.net>
*
* 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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <iostream>
#include <string>
using namespace std;
#include "common/config.h"
#include "common/ceph_argparse.h"
#include "global/global_init.h"
#include "mon/MonMap.h"
void usage()
{
cout << " usage: [--print] [--create [--clobber]] [--add name 1.2.3.4:567] [--rm name] <mapfilename>" << std::endl;
exit(1);
}
int main(int argc, const char **argv)
{
vector<const char*> args;
argv_to_vec(argc, argv, args);
const char *me = argv[0];
std::string fn;
bool print = false;
bool create = false;
bool clobber = false;
bool modified = false;
map<string,entity_addr_t> add;
list<string> rm;
global_init(args, CEPH_ENTITY_TYPE_CLIENT, CODE_ENVIRONMENT_UTILITY,
CINIT_FLAG_NO_DEFAULT_CONFIG_FILE);
common_init_finish(g_ceph_context);
std::string val;
for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) {
if (ceph_argparse_double_dash(args, i)) {
break;
} else if (ceph_argparse_flag(args, i, "-h", "--help", (char*)NULL)) {
usage();
} else if (ceph_argparse_flag(args, i, "-p", "--print", (char*)NULL)) {
print = true;
} else if (ceph_argparse_flag(args, i, "--create", (char*)NULL)) {
create = true;
} else if (ceph_argparse_flag(args, i, "--clobber", (char*)NULL)) {
clobber = true;
} else if (ceph_argparse_flag(args, i, "--add", (char*)NULL)) {
string name = *i;
i = args.erase(i);
if (i == args.end())
usage();
entity_addr_t addr;
if (!addr.parse(*i)) {
cerr << me << ": invalid ip:port '" << *i << "'" << std::endl;
return -1;
}
if (addr.get_port() == 0)
addr.set_port(CEPH_MON_PORT);
add[name] = addr;
modified = true;
i = args.erase(i);
} else if (ceph_argparse_witharg(args, i, &val, "--rm", (char*)NULL)) {
rm.push_back(val);
modified = true;
} else {
++i;
}
}
if (args.size() < 1) {
cerr << me << ": must specify monmap filename" << std::endl;
usage();
}
else if (args.size() > 1) {
cerr << me << ": too many arguments" << std::endl;
usage();
}
fn = args[0];
MonMap monmap(ceph_clock_now(g_ceph_context));
cout << me << ": monmap file " << fn << std::endl;
int r = 0;
if (!(create && clobber)) {
try {
r = monmap.read(fn.c_str());
} catch (...) {
cerr << me << ": unable to read monmap file" << std::endl;
return -1;
}
}
char buf[80];
if (!create && r < 0) {
cerr << me << ": couldn't open " << fn << ": " << strerror_r(-r, buf, sizeof(buf)) << std::endl;
return -1;
}
else if (create && !clobber && r == 0) {
cerr << me << ": " << fn << " exists, --clobber to overwrite" << std::endl;
return -1;
}
if (create) {
srand(getpid() + time(0));
monmap.generate_fsid();
cout << me << ": generated fsid " << monmap.fsid << std::endl;
modified = true;
}
for (map<string,entity_addr_t>::iterator p = add.begin(); p != add.end(); p++) {
if (monmap.contains(p->first)) {
cerr << me << ": map already contains mon." << p->first << std::endl;
usage();
}
if (monmap.contains(p->second)) {
cerr << me << ": map already contains " << p->second << std::endl;
usage();
}
monmap.add(p->first, p->second);
}
for (list<string>::iterator p = rm.begin(); p != rm.end(); p++) {
cout << me << ": removing " << *p << std::endl;
if (!monmap.contains(*p)) {
cerr << me << ": map does not contain " << *p << std::endl;
usage();
}
monmap.remove(*p);
}
if (!print && !modified)
usage();
if (modified)
monmap.epoch++;
if (print)
monmap.print(cout);
if (modified) {
// write it out
cout << me << ": writing epoch " << monmap.epoch
<< " to " << fn
<< " (" << monmap.size() << " monitors)"
<< std::endl;
int r = monmap.write(fn.c_str());
if (r < 0) {
cerr << "monmaptool: error writing to '" << fn << "': " << strerror_r(-r, buf, sizeof(buf)) << std::endl;
return 1;
}
}
return 0;
}
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