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#!/usr/bin/env perl
# Copyright (C) 2011 DeNA Co.,Ltd.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
package MHA::NodeUtil;
use strict;
use warnings FATAL => 'all';
use Carp qw(croak);
use MHA::NodeConst;
use File::Path;
use Errno();
sub create_dir_if($) {
my $dir = shift;
if ( !-d $dir ) {
eval {
print "Creating directory $dir.. ";
mkpath($dir);
print "done.\n";
};
if ($@) {
my $e = $@;
undef $@;
if ( -d $dir ) {
print "ok. already exists.\n";
}
else {
croak "failed to create dir:$dir:$e";
}
}
}
}
# Compare file checksum between local and remote host
sub compare_checksum {
my $local_file = shift;
my $remote_path = shift;
my $ssh_user = shift;
my $ssh_host = shift;
my $ssh_port = shift;
$ssh_port = 22 unless ($ssh_port);
my $local_md5 = `md5sum $local_file`;
return 1 if ($?);
chomp($local_md5);
$local_md5 = substr( $local_md5, 0, 32 );
my $ssh_user_host = $ssh_user . '@' . $ssh_host;
my $remote_md5 =
`ssh $MHA::NodeConst::SSH_OPT_ALIVE -p $ssh_port $ssh_user_host \"md5sum $remote_path\"`;
return 1 if ($?);
chomp($remote_md5);
$remote_md5 = substr( $remote_md5, 0, 32 );
return 2 if ( $local_md5 ne $remote_md5 );
return 0;
}
sub file_copy {
my $to_remote = shift;
my $local_file = shift;
my $remote_file = shift;
my $ssh_user = shift;
my $ssh_host = shift;
my $log_output = shift;
my $ssh_port = shift;
$ssh_port = 22 unless ($ssh_port);
my $ssh_user_host = $ssh_user . '@' . $ssh_host;
my ( $from, $to );
if ($to_remote) {
$from = $local_file;
$to = "$ssh_user_host:$remote_file";
}
else {
$to = $local_file;
$from = "$ssh_user_host:$remote_file";
}
my $max_retries = 3;
my $retry_count = 0;
my $copy_fail = 1;
my $copy_command =
"scp $MHA::NodeConst::SSH_OPT_ALIVE -P $ssh_port $from $to";
if ($log_output) {
$copy_command .= " >> $log_output 2>&1";
}
while ( $retry_count < $max_retries ) {
if (
system($copy_command)
|| compare_checksum(
$local_file, $remote_file, $ssh_user, $ssh_host, $ssh_port
)
)
{
my $msg = "Failed copy or checksum. Retrying..";
if ($log_output) {
system("echo $msg >> $log_output 2>&1");
}
else {
print "$msg\n";
}
$retry_count++;
}
else {
$copy_fail = 0;
last;
}
}
return $copy_fail;
}
sub system_rc($) {
my $rc = shift;
my $high = $rc >> 8;
my $low = $rc & 255;
return ( $high, $low );
}
sub create_file_if {
my $file = shift;
if ( $file && ( !-f $file ) ) {
open( my $out, ">", $file ) or croak "$!:$file";
close($out);
}
}
sub drop_file_if($) {
my $file = shift;
if ( $file && -f $file ) {
unlink $file or croak "$!:$file";
}
}
sub get_ip {
my $host = shift;
my ( $bin_addr_host, $addr_host );
if ( defined($host) ) {
$bin_addr_host = gethostbyname($host);
unless ($bin_addr_host) {
croak "Failed to get IP address on host $host!\n";
}
$addr_host = sprintf( "%vd", $bin_addr_host );
return $addr_host;
}
return;
}
sub current_time() {
my ( $sec, $min, $hour, $mday, $mon, $year ) = localtime();
$mon += 1;
$year += 1900;
my $val = sprintf( "%d-%02d-%02d %02d:%02d:%02d",
$year, $mon, $mday, $hour, $min, $sec );
return $val;
}
sub check_manager_version {
my $manager_version = shift;
if ( $manager_version < $MHA::NodeConst::MGR_MIN_VERSION ) {
croak
"MHA Manager version is $manager_version, but must be $MHA::NodeConst::MGR_MIN_VERSION or higher.\n";
}
}
sub parse_mysql_version($) {
my $str = shift;
my $result = sprintf( '%03d%03d%03d', $str =~ m/(\d+)/g );
return $result;
}
sub parse_mysql_major_version($) {
my $str = shift;
my $result = sprintf( '%03d%03d', $str =~ m/(\d+)/g );
return $result;
}
sub mysql_version_ge {
my ( $my_version, $target_version ) = @_;
my $result =
parse_mysql_version($my_version) ge parse_mysql_version($target_version)
? 1
: 0;
return $result;
}
1;
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