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package wsrep::common;
use base qw(Exporter);
our @EXPORT= qw(wsrep_not_ok);
use File::Basename;
use Memoize;
memoize 'wrong_wsrep_version';
memoize 'check_garbd_support';
memoize 'check_wsrep_support';
memoize 'wsrep_not_ok';
use mtr_report;
my $extra_path;
my $mariabackup_path;
my $mariabackup_exe;
my $garbd_exe;
my $file_wsrep_provider;
sub wrong_wsrep_version() {
my $check_version= dirname($My::SafeProcess::safe_process_cmd[0]) . '/wsrep_check_version';
my $checked = `$check_version -p`;
chomp($checked);
return $? ? $checked : undef;
}
sub which($) { return `sh -c "command -v $_[0]"` }
sub check_garbd_support() {
my $wsrep_path= dirname($file_wsrep_provider);
$garbd_exe= ::mtr_file_exists($wsrep_path."/garb/garbd",
$wsrep_path."/../../bin/garb/garbd",
'/usr/bin/garbd');
$ENV{MTR_GARBD_EXE}= $garbd_exe if $garbd_exe;
}
sub check_wsrep_support() {
mtr_report(" - binaries built with wsrep patch");
# ADD scripts to $PATH to that wsrep_sst_* can be found
my ($spath) = grep { -f "$_/wsrep_sst_rsync"; } "$::bindir/scripts", $::path_client_bindir;
mtr_error("No SST scripts") unless $spath;
$ENV{PATH}="$spath:$ENV{PATH}";
# ADD mariadb client to path so that wsrep_notify_cmd can find mariadb
# client for loading the tables. (Don't assume each machine has mariadb installed)
my ($cpath) = grep { -f "$_/mariadb"; } "$::bindir/scripts", $::path_client_bindir;
mtr_error("No mariadb client found") unless $cpath;
$ENV{PATH}="$cpath:$ENV{PATH}" unless $cpath eq $spath;
# ADD my_print_defaults script path to path so that SST scripts can find it
my $my_print_defaults_exe=
::mtr_exe_maybe_exists(
"$::bindir/extra/my_print_defaults",
"$::path_client_bindir/my_print_defaults");
my $epath= "";
if ($my_print_defaults_exe ne "") {
$epath= dirname($my_print_defaults_exe);
}
mtr_error("No my_print_defaults") unless $epath;
$ENV{PATH}="$epath:$ENV{PATH}" unless ($epath eq $spath) or
($epath eq $cpath);
$extra_path= $epath;
if (which("socat")) {
$ENV{MTR_GALERA_TFMT}="socat";
} elsif (which("nc")) {
$ENV{MTR_GALERA_TFMT}="nc";
}
$ENV{PATH}=dirname($ENV{XTRABACKUP}).":$ENV{PATH}" if $ENV{XTRABACKUP};
# Check whether WSREP_PROVIDER environment variable is set.
if (defined $ENV{'WSREP_PROVIDER'}) {
$file_wsrep_provider= "";
if ($ENV{'WSREP_PROVIDER'} ne "none") {
if (::mtr_file_exists($ENV{'WSREP_PROVIDER'}) ne "") {
$file_wsrep_provider= $ENV{'WSREP_PROVIDER'};
} else {
mtr_error("WSREP_PROVIDER env set to an invalid path");
}
check_garbd_support();
}
# WSREP_PROVIDER is valid; set to a valid path or "none").
mtr_verbose("WSREP_PROVIDER env set to $ENV{'WSREP_PROVIDER'}");
} else {
# WSREP_PROVIDER env not defined. Lets try to locate the wsrep provider
# library.
$file_wsrep_provider=
::mtr_file_exists("/usr/lib64/galera-4/libgalera_smm.so",
"/usr/lib64/galera/libgalera_smm.so",
"/usr/lib/galera-4/libgalera_smm.so",
"/usr/lib/galera/libgalera_smm.so");
if ($file_wsrep_provider ne "") {
# wsrep provider library found !
mtr_verbose("wsrep provider library found : $file_wsrep_provider");
$ENV{'WSREP_PROVIDER'}= $file_wsrep_provider;
check_garbd_support();
} else {
mtr_verbose("Could not find wsrep provider library, setting it to 'none'");
$ENV{'WSREP_PROVIDER'}= "none";
}
}
}
sub wsrep_not_ok() {
return "Not run for embedded server" if $::opt_embedded_server;
return "WSREP is not compiled in" if not $::mysqld_variables{'wsrep-on'};
check_wsrep_support();
return "No wsrep provider library" unless $file_wsrep_provider;
return wrong_wsrep_version() if wrong_wsrep_version();
undef;
}
1;
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