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Preliminary patch for the following bugs:

Browse Source 
- BUG#15934: Instance manager fails to work;
  - BUG#18020: IM connect problem;
  - BUG#18027: IM: Server_ID differs;
  - BUG#18033: IM: Server_ID not reported;
  - BUG#21331: Instance Manager: Connect problems in tests;

The only test suite has been changed
(server codebase has not been modified).


BitKeeper/deleted/.del-im_check_os.inc:
  Rename: mysql-test/include/im_check_os.inc -> BitKeeper/deleted/.del-im_check_os.inc
mysql-test/include/im_check_env.inc:
  Include only this file from all IM-tests.
mysql-test/lib/mtr_io.pl:
  Update mtr_get_pid_from_file() to workaround race,
  described in BUG#21884.
mysql-test/lib/mtr_process.pl:
  Refactor im_start()/im_stop() so that they will be more
  reliable. There are the following user-visible changes:
    - if one of these functions fails, the test suite
      is aborted;
    - mtr_im_stop() now determines whether the component is
      alive or not not only by checking PID, but also by trying
      to connect to the component;
    - after starting IM, the test suite waits for it to start
      accepting client connections and to start all its guarded
      mysqld instances;
    - a lot of debug-logs have been added in order to simplify
      investigation of future failures.
mysql-test/mysql-test-run.pl:
  1. Get rid of kill_and_cleanup();
  2. Move im_start()/im_stop() to mtr_process.pl;
  3. Change default IM port to 9311 so that it does not interfere
     with default slave port;
mysql-test/r/im_daemon_life_cycle.result:
  Updated result file.
mysql-test/r/im_life_cycle.result:
  Updated result file.
mysql-test/r/im_options_set.result:
  Updated result file.
mysql-test/r/im_options_unset.result:
  Updated result file.
mysql-test/r/im_utils.result:
  Updated result file.
mysql-test/t/im_daemon_life_cycle.imtest:
  Updated IM-test.
mysql-test/t/im_life_cycle.imtest:
  Updated IM-test.
mysql-test/t/im_options_set.imtest:
  Updated IM-test.
mysql-test/t/im_options_unset.imtest:
  Updated IM-test.
mysql-test/t/im_utils.imtest:
  Updated IM-test.
This commit is contained in:
unknown
2006-08-29 15:46:40 +04:00
parent 3cd6015c2c
commit 33294b1b50
16 changed files with 830 additions and 327 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
mysql-test/lib/mtr_io.pl
View File

@ -19,13 +19,39 @@ sub mtr_tonewfile($@);
##############################################################################
sub mtr_get_pid_from_file ($) {
my $file= shift;
my $pid_file_path= shift;
my $TOTAL_ATTEMPTS= 30;
my $timeout= 1;
open(FILE,"<",$file) or mtr_error("can't open file \"$file\": $!");
my $pid= <FILE>;
chomp($pid);
close FILE;
return $pid;
# We should read from the file until we get correct pid. As it is
# stated in BUG#21884, pid file can be empty at some moment. So, we should
# read it until we get valid data.
for (my $cur_attempt= 1; $cur_attempt <= $TOTAL_ATTEMPTS; ++$cur_attempt)
{
mtr_debug("Reading pid file '$pid_file_path' " .
"($cur_attempt of $TOTAL_ATTEMPTS)...");
open(FILE, '<', $pid_file_path)
or mtr_error("can't open file \"$pid_file_path\": $!");
my $pid= <FILE>;
chomp($pid) if defined $pid;
close FILE;
return $pid if defined $pid && $pid ne '';
mtr_debug("Pid file '$pid_file_path' is empty. " .
"Sleeping $timeout second(s)...");
sleep(1);
}
mtr_error("Pid file '$pid_file_path' is corrupted. " .
"Can not retrieve PID in " .
($timeout * $TOTAL_ATTEMPTS) . " seconds.");
}
sub mtr_get_opts_from_file ($) {

836
mysql-test/lib/mtr_process.pl
View File

@ -20,7 +20,29 @@ sub mtr_record_dead_children ();
sub mtr_exit ($);
sub sleep_until_file_created ($$$);
sub mtr_kill_processes ($);
sub mtr_kill_process ($$$$);
sub mtr_ping_mysqld_server ($);
# Private IM-related operations.
sub mtr_im_kill_process ($$$$);
sub mtr_im_load_pids ($);
sub mtr_im_terminate ($);
sub mtr_im_check_alive ($);
sub mtr_im_check_main_alive ($);
sub mtr_im_check_angel_alive ($);
sub mtr_im_check_mysqlds_alive ($);
sub mtr_im_check_mysqld_alive ($$);
sub mtr_im_cleanup ($);
sub mtr_im_rm_file ($);
sub mtr_im_errlog ($);
sub mtr_im_kill ($);
sub mtr_im_wait_for_connection ($$$);
sub mtr_im_wait_for_mysqld($$$);
# Public IM-related operations.
sub mtr_im_start ($$);
sub mtr_im_stop ($);
# static in C
sub spawn_impl ($$$$$$$$);
@ -359,40 +381,51 @@ sub mtr_process_exit_status {
sub mtr_kill_leftovers () {
# First, kill all masters and slaves that would conflict with
# this run. Make sure to remove the PID file, if any.
# FIXME kill IM manager first, else it will restart the servers, how?!
mtr_debug("mtr_kill_leftovers(): started.");
mtr_im_stop($::instance_manager);
# Kill mysqld servers (masters and slaves) that would conflict with this
# run. Make sure to remove the PID file, if any.
# Don't touch IM-managed mysqld instances -- they should be stopped by
# mtr_im_stop().
mtr_debug("Collecting mysqld-instances to shutdown...");
my @args;
for ( my $idx; $idx < 2; $idx++ )
for ( my $idx= 0; $idx < 2; $idx++ )
{
my $pidfile= $::master->[$idx]->{'path_mypid'};
my $sockfile= $::master->[$idx]->{'path_mysock'};
my $port= $::master->[$idx]->{'path_myport'};
push(@args,{
pid => 0, # We don't know the PID
pidfile => $::instance_manager->{'instances'}->[$idx]->{'path_pid'},
sockfile => $::instance_manager->{'instances'}->[$idx]->{'path_sock'},
port => $::instance_manager->{'instances'}->[$idx]->{'port'},
pidfile => $pidfile,
sockfile => $sockfile,
port => $port,
});
mtr_debug(" - Master mysqld " .
"(idx: $idx; pid: '$pidfile'; socket: '$sockfile'; port: $port)");
}
for ( my $idx; $idx < 2; $idx++ )
for ( my $idx= 0; $idx < 3; $idx++ )
{
push(@args,{
pid => 0, # We don't know the PID
pidfile => $::master->[$idx]->{'path_mypid'},
sockfile => $::master->[$idx]->{'path_mysock'},
port => $::master->[$idx]->{'path_myport'},
});
}
my $pidfile= $::slave->[$idx]->{'path_mypid'};
my $sockfile= $::slave->[$idx]->{'path_mysock'};
my $port= $::slave->[$idx]->{'path_myport'};
for ( my $idx; $idx < 3; $idx++ )
{
push(@args,{
pid => 0, # We don't know the PID
pidfile => $::slave->[$idx]->{'path_mypid'},
sockfile => $::slave->[$idx]->{'path_mysock'},
port => $::slave->[$idx]->{'path_myport'},
pidfile => $pidfile,
sockfile => $sockfile,
port => $port,
});
mtr_debug(" - Slave mysqld " .
"(idx: $idx; pid: '$pidfile'; socket: '$sockfile'; port: $port)");
}
mtr_mysqladmin_shutdown(\@args, 20);
@ -413,6 +446,8 @@ sub mtr_kill_leftovers () {
# FIXME $path_run_dir or something
my $rundir= "$::opt_vardir/run";
mtr_debug("Processing PID files in directory '$rundir'...");
if ( -d $rundir )
{
opendir(RUNDIR, $rundir)
@ -426,8 +461,12 @@ sub mtr_kill_leftovers () {
if ( -f $pidfile )
{
mtr_debug("Processing PID file: '$pidfile'...");
my $pid= mtr_get_pid_from_file($pidfile);
mtr_debug("Got pid: $pid from file '$pidfile'");
# Race, could have been removed between I tested with -f
# and the unlink() below, so I better check again with -f
@ -438,14 +477,24 @@ sub mtr_kill_leftovers () {
if ( $::glob_cygwin_perl or kill(0, $pid) )
{
mtr_debug("There is process with pid $pid -- scheduling for kill.");
push(@pids, $pid); # We know (cygwin guess) it exists
}
else
{
mtr_debug("There is no process with pid $pid -- skipping.");
}
}
}
closedir(RUNDIR);
if ( @pids )
{
mtr_debug("Killing the following processes with PID files: " .
join(' ', @pids) . "...");
start_reap_all();
if ( $::glob_cygwin_perl )
{
# We have no (easy) way of knowing the Cygwin controlling
@ -459,6 +508,7 @@ sub mtr_kill_leftovers () {
my $retries= 10; # 10 seconds
do
{
mtr_debug("Sending SIGKILL to pids: " . join(' ', @pids));
kill(9, @pids);
mtr_debug("Sleep 1 second waiting for processes to die");
sleep(1) # Wait one second
@ -469,19 +519,29 @@ sub mtr_kill_leftovers () {
mtr_warning("can't kill process(es) " . join(" ", @pids));
}
}
stop_reap_all();
}
}
else
{
mtr_debug("Directory for PID files ($rundir) does not exist.");
}
# We may have failed everything, bug we now check again if we have
# the listen ports free to use, and if they are free, just go for it.
mtr_debug("Checking known mysqld servers...");
foreach my $srv ( @args )
{
if ( mtr_ping_mysqld_server($srv->{'port'}, $srv->{'sockfile'}) )
if ( mtr_ping_mysqld_server($srv->{'port'}) )
{
mtr_warning("can't kill old mysqld holding port $srv->{'port'}");
}
}
mtr_debug("mtr_kill_leftovers(): finished.");
}
##############################################################################
@ -653,10 +713,15 @@ sub mtr_mysqladmin_shutdown {
my %mysql_admin_pids;
my @to_kill_specs;
mtr_debug("mtr_mysqladmin_shutdown(): starting...");
mtr_debug("Collecting mysqld-instances to shutdown...");
foreach my $srv ( @$spec )
{
if ( mtr_ping_mysqld_server($srv->{'port'}, $srv->{'sockfile'}) )
if ( mtr_ping_mysqld_server($srv->{'port'}) )
{
mtr_debug("Mysqld (port: $srv->{port}) needs to be stopped.");
push(@to_kill_specs, $srv);
}
}
@ -688,6 +753,9 @@ sub mtr_mysqladmin_shutdown {
mtr_add_arg($args, "--shutdown_timeout=$adm_shutdown_tmo");
mtr_add_arg($args, "shutdown");
mtr_debug("Shutting down mysqld " .
"(port: $srv->{port}; socket: '$srv->{sockfile}')...");
my $path_mysqladmin_log= "$::opt_vardir/log/mysqladmin.log";
my $pid= mtr_spawn($::exe_mysqladmin, $args,
"", $path_mysqladmin_log, $path_mysqladmin_log, "",
@ -719,14 +787,18 @@ sub mtr_mysqladmin_shutdown {
my $res= 1; # If we just fall through, we are done
# in the sense that the servers don't
# listen to their ports any longer
mtr_debug("Waiting for mysqld servers to stop...");
TIME:
while ( $timeout-- )
{
foreach my $srv ( @to_kill_specs )
{
$res= 1; # We are optimistic
if ( mtr_ping_mysqld_server($srv->{'port'}, $srv->{'sockfile'}) )
if ( mtr_ping_mysqld_server($srv->{'port'}) )
{
mtr_debug("Mysqld (port: $srv->{port}) is still alive.");
mtr_debug("Sleep 1 second waiting for processes to stop using port");
sleep(1); # One second
$res= 0;
@ -736,7 +808,14 @@ sub mtr_mysqladmin_shutdown {
last; # If we got here, we are done
}
$timeout or mtr_debug("At least one server is still listening to its port");
if ($res)
{
mtr_debug("mtr_mysqladmin_shutdown(): All mysqld instances are down.");
}
else
{
mtr_debug("mtr_mysqladmin_shutdown(): At least one server is alive.");
}
return $res;
}
@ -795,7 +874,7 @@ sub stop_reap_all {
$SIG{CHLD}= 'DEFAULT';
}
sub mtr_ping_mysqld_server () {
sub mtr_ping_mysqld_server ($) {
my $port= shift;
my $remote= "localhost";
@ -810,13 +889,18 @@ sub mtr_ping_mysqld_server () {
{
mtr_error("can't create socket: $!");
}
mtr_debug("Pinging server (port: $port)...");
if ( connect(SOCK, $paddr) )
{
mtr_debug("Server (port: $port) is alive.");
close(SOCK); # FIXME check error?
return 1;
}
else
{
mtr_debug("Server (port: $port) is dead.");
return 0;
}
}
@ -886,34 +970,6 @@ sub mtr_kill_processes ($) {
}
}
sub mtr_kill_process ($$$$) {
my $pid= shift;
my $signal= shift;
my $total_retries= shift;
my $timeout= shift;
for (my $cur_attempt= 1; $cur_attempt <= $total_retries; ++$cur_attempt)
{
mtr_debug("Sending $signal to $pid...");
kill($signal, $pid);
unless (kill (0, $pid))
{
mtr_debug("Process $pid died.");
return;
}
mtr_debug("Sleeping $timeout second(s) waiting for processes to die...");
sleep($timeout);
}
mtr_debug("Process $pid is still alive after $total_retries " .
"of sending signal $signal.");
}
##############################################################################
#
# When we exit, we kill off all children
@ -943,4 +999,676 @@ sub mtr_exit ($) {
exit($code);
}
##############################################################################
#
# Instance Manager management routines.
#
##############################################################################
sub mtr_im_kill_process ($$$$) {
my $pid_lst= shift;
my $signal= shift;
my $total_retries= shift;
my $timeout= shift;
my %pids;
foreach my $pid (@{$pid_lst})
{
$pids{$pid}= 1;
}
for (my $cur_attempt= 1; $cur_attempt <= $total_retries; ++$cur_attempt)
{
foreach my $pid (keys %pids)
{
mtr_debug("Sending $signal to $pid...");
kill($signal, $pid);
unless (kill (0, $pid))
{
mtr_debug("Process $pid died.");
delete $pids{$pid};
}
}
return if scalar keys %pids == 0;
mtr_debug("Sleeping $timeout second(s) waiting for processes to die...");
sleep($timeout);
}
mtr_debug("Process(es) " .
join(' ', keys %pids) .
" is still alive after $total_retries " .
"of sending signal $signal.");
}
###########################################################################
sub mtr_im_load_pids($) {
my $instance_manager= shift;
mtr_debug("Loading PID files...");
# Obtain mysqld-process pids.
my $instances = $instance_manager->{'instances'};
for (my $idx= 0; $idx < 2; ++$idx)
{
mtr_debug("IM-guarded mysqld[$idx] PID file: '" .
$instances->[$idx]->{'path_pid'} . "'.");
my $mysqld_pid;
if (-r $instances->[$idx]->{'path_pid'})
{
$mysqld_pid= mtr_get_pid_from_file($instances->[$idx]->{'path_pid'});
mtr_debug("IM-guarded mysqld[$idx] PID: $mysqld_pid.");
}
else
{
$mysqld_pid= undef;
mtr_debug("IM-guarded mysqld[$idx]: no PID file.");
}
$instances->[$idx]->{'pid'}= $mysqld_pid;
}
# Re-read Instance Manager PIDs from the file, since during tests Instance
# Manager could have been restarted, so its PIDs could have been changed.
# - IM-main
mtr_debug("IM-main PID file: '$instance_manager->{path_pid}'.");
if (-f $instance_manager->{'path_pid'})
{
$instance_manager->{'pid'} =
mtr_get_pid_from_file($instance_manager->{'path_pid'});
mtr_debug("IM-main PID: $instance_manager->{pid}.");
}
else
{
mtr_debug("IM-main: no PID file.");
$instance_manager->{'pid'}= undef;
}
# - IM-angel
mtr_debug("IM-angel PID file: '$instance_manager->{path_angel_pid}'.");
if (-f $instance_manager->{'path_angel_pid'})
{
$instance_manager->{'angel_pid'} =
mtr_get_pid_from_file($instance_manager->{'path_angel_pid'});
mtr_debug("IM-angel PID: $instance_manager->{'angel_pid'}.");
}
else
{
mtr_debug("IM-angel: no PID file.");
$instance_manager->{'angel_pid'} = undef;
}
}
###########################################################################
sub mtr_im_terminate($) {
my $instance_manager= shift;
# Load pids from pid-files. We should do it first of all, because IM deletes
# them on shutdown.
mtr_im_load_pids($instance_manager);
mtr_debug("Shutting Instance Manager down...");
# Ignoring SIGCHLD so that all children could rest in peace.
start_reap_all();
# Send SIGTERM to IM-main.
if (defined $instance_manager->{'pid'})
{
mtr_debug("IM-main pid: $instance_manager->{pid}.");
mtr_debug("Stopping IM-main...");
mtr_im_kill_process([ $instance_manager->{'pid'} ], 'TERM', 10, 1);
}
else
{
mtr_debug("IM-main pid: n/a.");
}
# If IM-angel was alive, wait for it to die.
if (defined $instance_manager->{'angel_pid'})
{
mtr_debug("IM-angel pid: $instance_manager->{'angel_pid'}.");
mtr_debug("Waiting for IM-angel to die...");
my $total_attempts= 10;
for (my $cur_attempt=1; $cur_attempt <= $total_attempts; ++$cur_attempt)
{
unless (kill (0, $instance_manager->{'angel_pid'}))
{
mtr_debug("IM-angel died.");
last;
}
sleep(1);
}
}
else
{
mtr_debug("IM-angel pid: n/a.");
}
stop_reap_all();
# Re-load PIDs.
mtr_im_load_pids($instance_manager);
}
###########################################################################
sub mtr_im_check_alive($) {
my $instance_manager= shift;
mtr_debug("Checking whether IM-components are alive...");
return 1 if mtr_im_check_main_alive($instance_manager);
return 1 if mtr_im_check_angel_alive($instance_manager);
return 1 if mtr_im_check_mysqlds_alive($instance_manager);
return 0;
}
###########################################################################
sub mtr_im_check_main_alive($) {
my $instance_manager= shift;
# Check that the process, that we know to be IM's, is dead.
if (defined $instance_manager->{'pid'})
{
if (kill (0, $instance_manager->{'pid'}))
{
mtr_debug("IM-main (PID: $instance_manager->{pid}) is alive.");
return 1;
}
else
{
mtr_debug("IM-main (PID: $instance_manager->{pid}) is dead.");
}
}
else
{
mtr_debug("No PID file for IM-main.");
}
# Check that IM does not accept client connections.
if (mtr_ping_mysqld_server($instance_manager->{'port'}))
{
mtr_debug("IM-main (port: $instance_manager->{port}) " .
"is accepting connections.");
mtr_im_errlog("IM-main is accepting connections on port " .
"$instance_manager->{port}, but there is no " .
"process information.");
return 1;
}
else
{
mtr_debug("IM-main (port: $instance_manager->{port}) " .
"does not accept connections.");
return 0;
}
}
###########################################################################
sub mtr_im_check_angel_alive($) {
my $instance_manager= shift;
# Check that the process, that we know to be the Angel, is dead.
if (defined $instance_manager->{'angel_pid'})
{
if (kill (0, $instance_manager->{'angel_pid'}))
{
mtr_debug("IM-angel (PID: $instance_manager->{angel_pid}) is alive.");
return 1;
}
else
{
mtr_debug("IM-angel (PID: $instance_manager->{angel_pid}) is dead.");
return 0;
}
}
else
{
mtr_debug("No PID file for IM-angel.");
return 0;
}
}
###########################################################################
sub mtr_im_check_mysqlds_alive($) {
my $instance_manager= shift;
mtr_debug("Checking for IM-guarded mysqld instances...");
my $instances = $instance_manager->{'instances'};
for (my $idx= 0; $idx < 2; ++$idx)
{
mtr_debug("Checking mysqld[$idx]...");
return 1
if mtr_im_check_mysqld_alive($instance_manager, $instances->[$idx]);
}
}
###########################################################################
sub mtr_im_check_mysqld_alive($$) {
my $instance_manager= shift;
my $mysqld_instance= shift;
# Check that the process is dead.
if (defined $instance_manager->{'pid'})
{
if (kill (0, $instance_manager->{'pid'}))
{
mtr_debug("Mysqld instance (PID: $mysqld_instance->{pid}) is alive.");
return 1;
}
else
{
mtr_debug("Mysqld instance (PID: $mysqld_instance->{pid}) is dead.");
}
}
else
{
mtr_debug("No PID file for mysqld instance.");
}
# Check that mysqld does not accept client connections.
if (mtr_ping_mysqld_server($mysqld_instance->{'port'}))
{
mtr_debug("Mysqld instance (port: $mysqld_instance->{port}) " .
"is accepting connections.");
mtr_im_errlog("Mysqld is accepting connections on port " .
"$mysqld_instance->{port}, but there is no " .
"process information.");
return 1;
}
else
{
mtr_debug("Mysqld instance (port: $mysqld_instance->{port}) " .
"does not accept connections.");
return 0;
}
}
###########################################################################
sub mtr_im_cleanup($) {
my $instance_manager= shift;
mtr_im_rm_file($instance_manager->{'path_pid'});
mtr_im_rm_file($instance_manager->{'path_sock'});
mtr_im_rm_file($instance_manager->{'path_angel_pid'});
for (my $idx= 0; $idx < 2; ++$idx)
{
mtr_im_rm_file($instance_manager->{'instances'}->[$idx]->{'path_pid'});
mtr_im_rm_file($instance_manager->{'instances'}->[$idx]->{'path_sock'});
}
}
###########################################################################
sub mtr_im_rm_file($)
{
my $file_path= shift;
if (-f $file_path)
{
mtr_debug("Removing '$file_path'...");
mtr_warning("Can not remove '$file_path'.")
unless unlink($file_path);
}
else
{
mtr_debug("File '$file_path' does not exist already.");
}
}
###########################################################################
sub mtr_im_errlog($) {
my $msg= shift;
# Complain in error log so that a warning will be shown.
#
# TODO: unless BUG#20761 is fixed, we will print the warning to stdout, so
# that it can be seen on console and does not produce pushbuild error.
# my $errlog= "$opt_vardir/log/mysql-test-run.pl.err";
#
# open (ERRLOG, ">>$errlog") ||
# mtr_error("Can not open error log ($errlog)");
#
# my $ts= localtime();
# print ERRLOG
# "Warning: [$ts] $msg\n";
#
# close ERRLOG;
my $ts= localtime();
print "Warning: [$ts] $msg\n";
}
###########################################################################
sub mtr_im_kill($) {
my $instance_manager= shift;
# Re-load PIDs. That can be useful because some processes could have been
# restarted.
mtr_im_load_pids($instance_manager);
# Ignoring SIGCHLD so that all children could rest in peace.
start_reap_all();
# Kill IM-angel first of all.
if (defined $instance_manager->{'angel_pid'})
{
mtr_debug("Killing IM-angel (PID: $instance_manager->{angel_pid})...");
mtr_im_kill_process([ $instance_manager->{'angel_pid'} ], 'KILL', 10, 1)
}
else
{
mtr_debug("IM-angel is dead.");
}
# Re-load PIDs again.
mtr_im_load_pids($instance_manager);
# Kill IM-main.
if (defined $instance_manager->{'pid'})
{
mtr_debug("Killing IM-main (PID: $instance_manager->pid})...");
mtr_im_kill_process([ $instance_manager->{'pid'} ], 'KILL', 10, 1);
}
else
{
mtr_debug("IM-main is dead.");
}
# Re-load PIDs again.
mtr_im_load_pids($instance_manager);
# Kill guarded mysqld instances.
my @mysqld_pids;
mtr_debug("Collecting PIDs of mysqld instances to kill...");
for (my $idx= 0; $idx < 2; ++$idx)
{
my $pid= $instance_manager->{'instances'}->[$idx]->{'pid'};
next unless defined $pid;
mtr_debug(" - IM-guarded mysqld[$idx] PID: $pid.");
push (@mysqld_pids, $pid);
}
if (scalar @mysqld_pids > 0)
{
mtr_debug("Killing IM-guarded mysqld instances...");
mtr_im_kill_process(\@mysqld_pids, 'KILL', 10, 1);
}
# That's all.
stop_reap_all();
}
##############################################################################
sub mtr_im_wait_for_connection($$$) {
my $instance_manager= shift;
my $total_attempts= shift;
my $connect_timeout= shift;
mtr_debug("Waiting for IM on port $instance_manager->{port} " .
"to start accepting connections...");
for (my $cur_attempt= 1; $cur_attempt <= $total_attempts; ++$cur_attempt)
{
mtr_debug("Trying to connect to IM ($cur_attempt of $total_attempts)...");
if (mtr_ping_mysqld_server($instance_manager->{'port'}))
{
mtr_debug("IM is accepting connections " .
"on port $instance_manager->{port}.");
return 1;
}
mtr_debug("Sleeping $connect_timeout...");
sleep($connect_timeout);
}
mtr_debug("IM does not accept connections " .
"on port $instance_manager->{port} after " .
($total_attempts * $connect_timeout) . " seconds.");
return 0;
}
##############################################################################
sub mtr_im_wait_for_mysqld($$$) {
my $mysqld= shift;
my $total_attempts= shift;
my $connect_timeout= shift;
mtr_debug("Waiting for IM-guarded mysqld on port $mysqld->{port} " .
"to start accepting connections...");
for (my $cur_attempt= 1; $cur_attempt <= $total_attempts; ++$cur_attempt)
{
mtr_debug("Trying to connect to mysqld " .
"($cur_attempt of $total_attempts)...");
if (mtr_ping_mysqld_server($mysqld->{'port'}))
{
mtr_debug("Mysqld is accepting connections " .
"on port $mysqld->{port}.");
return 1;
}
mtr_debug("Sleeping $connect_timeout...");
sleep($connect_timeout);
}
mtr_debug("Mysqld does not accept connections " .
"on port $mysqld->{port} after " .
($total_attempts * $connect_timeout) . " seconds.");
return 0;
}
##############################################################################
sub mtr_im_start($$) {
my $instance_manager = shift;
my $opts = shift;
mtr_debug("Starting Instance Manager...");
my $args;
mtr_init_args(\$args);
mtr_add_arg($args, "--defaults-file=%s",
$instance_manager->{'defaults_file'});
foreach my $opt (@{$opts})
{
mtr_add_arg($args, $opt);
}
$instance_manager->{'pid'} =
mtr_spawn(
$::exe_im, # path to the executable
$args, # cmd-line args
'', # stdin
$instance_manager->{'path_log'}, # stdout
$instance_manager->{'path_err'}, # stderr
'', # pid file path (not used)
{ append_log_file => 1 } # append log files
);
if ( ! $instance_manager->{'pid'} )
{
mtr_report('Could not start Instance Manager');
return;
}
# Instance Manager can be run in daemon mode. In this case, it creates
# several processes and the parent process, created by mtr_spawn(), exits just
# after start. So, we have to obtain Instance Manager PID from the PID file.
if ( ! sleep_until_file_created(
$instance_manager->{'path_pid'},
$instance_manager->{'start_timeout'},
-1)) # real PID is still unknown
{
mtr_report("Instance Manager PID file is missing");
return;
}
$instance_manager->{'pid'} =
mtr_get_pid_from_file($instance_manager->{'path_pid'});
mtr_debug("Instance Manager started. PID: $instance_manager->{pid}.");
# Wait until we can connect to IM.
my $IM_CONNECT_TIMEOUT= 30;
unless (mtr_im_wait_for_connection($instance_manager,
$IM_CONNECT_TIMEOUT, 1))
{
mtr_debug("Can not connect to Instance Manager " .
"in $IM_CONNECT_TIMEOUT seconds after start.");
mtr_debug("Aborting test suite...");
mtr_kill_leftovers();
mtr_error("Can not connect to Instance Manager " .
"in $IM_CONNECT_TIMEOUT seconds after start.");
}
# Wait until we can connect to guarded mysqld-instances
# (in other words -- wait for IM to start guarded instances).
for (my $idx= 0; $idx < 2; ++$idx)
{
my $mysqld= $instance_manager->{'instances'}->[$idx];
next if exists $mysqld->{'nonguarded'};
mtr_debug("Waiting for mysqld[$idx] to start...");
unless (mtr_im_wait_for_mysqld($mysqld, 30, 1))
{
mtr_debug("Can not connect to mysqld[$idx] " .
"in $IM_CONNECT_TIMEOUT seconds after start.");
mtr_debug("Aborting test suite...");
mtr_kill_leftovers();
mtr_error("Can not connect to mysqld[$idx] " .
"in $IM_CONNECT_TIMEOUT seconds after start.");
}
mtr_debug("mysqld[$idx] started.");
}
mtr_debug("Instance Manager started.");
}
##############################################################################
sub mtr_im_stop($) {
my $instance_manager= shift;
mtr_debug("Stopping Instance Manager...");
# Try graceful shutdown.
mtr_im_terminate($instance_manager);
# Check that all processes died.
unless (mtr_im_check_alive($instance_manager))
{
mtr_debug("Instance Manager has been stopped successfully.");
mtr_im_cleanup($instance_manager);
return 1;
}
# Instance Manager don't want to die. We should kill it.
mtr_im_errlog("Instance Manager did not shutdown gracefully.");
mtr_im_kill($instance_manager);
# Check again that all IM-related processes have been killed.
my $im_is_alive= mtr_im_check_alive($instance_manager);
mtr_im_cleanup($instance_manager);
if ($im_is_alive)
{
mtr_error("Can not kill Instance Manager or its children.");
return 0;
}
mtr_debug("Instance Manager has been killed successfully.");
return 1;
}
###########################################################################
1;