mars/userspace/mars-status

#!/usr/bin/perl -w
# (c) 2012 Joerg Mann / 1&1 Internet AG
#
# $Id: 7925d898464c836d5dbf76d2b6d3fed2413f6034 $
# last update at Tue Apr 10 17:20:32 CEST 2012 by joerg.mann@1und1.de

# TODO:
# check deutsch/englich
# add todo-global delete-logfiles
# anzeige bandbreite / i/o-load wenn dieser genutzt wird
# bugix fuer nachtaegliches join (log-v-4 ...)

###
use warnings;
use strict;
use English;
use Getopt::Long;
use Term::ANSIColor;
use Date::Language;
use POSIX qw(strftime);

### defaults
my $version       = "0.067u";
my $alife_timeout = "99";	# sec
my $is_tty 	  = 0;
my $mars_dir      = '/mars';
my $himself       = `uname -n` or die "cannot determine my network node name\n";
my $clearscreen	  = `clear`;
chomp $himself;


### ARGV
# Optionen in Hash-Ref parsen
my $params = {};
GetOptions( $params, 'help', 'h', 'version', 'v', 'resource=s', 'interval=i', 'long', 'history', 'debug' );

if($params->{help} || $params->{h}) {
	print "Usage: mars-status [--help]\n";
	print "Usage: mars-status [--version]\n";
	print "Usage: mars-status (without specification of parameters, an abstract of all the informations spent)\n";
	print "Usage: mars-status [--resource <RESNAME>] [--interval <seconds>] [--long [--history] [--debug]]\n";
	print "       --resource : limits the display to the specified resource\n";
	print "       --interval : refreshes the display every second xxx\n";
	print "       --long     : displays more detailed information\n";
        print "       --history  : shows information about the log files, version numbers and their status\n";
	print "       --debug    : additional display error messages and warnings to internal\n";
	print "       --monitor  : indicator to use for monitoring (not available)\n";
	print "\nAdvanced information are also available here: http://http://wiki.intranet.1and1.com/bin/view/PO/ProjektTEC1603\n";
	exit;
}

# Farbe zuruecksetzen
$SIG{INT} = sub {
	print color 'reset';
	print $clearscreen;
	exit;	
};


### figure out TTY
my $tty = readlink '/dev/stdout';
while ( my $temp = readlink $tty ) {
	$tty = $temp;
}
if ( $tty =~ /^\/dev\/pts\// ) {
	$is_tty = 1;
} elsif ( $tty =~ /^\/dev\/tty/ ) {
	$is_tty = 1;
}

#########################################################################################
### subs
sub check_link {
	my $dir = shift;
	my $result = readlink $dir;
	if ( !$result ) {
		return 0;
	} else {
		return $result;
	}
}

### print color
sub print_warn {
	my $text  = shift;
	my $color = shift;
	print color "$color" if ( $is_tty );
	print "$text";
	print color 'reset' if ( $is_tty );
}

### read links
sub convert_link {
	my $link = shift;
	$link = check_link "$link";
	if ( ( !$link ) || ( $link eq 0 ) ) {
	        print_warn "off", 'red';
	} else {
		print_warn "on", 'green';
	}
	return $link;
}

#########################################################################################
### sub display resource-partner
sub display_partner {
	my %p 			= @_;
	my $PRes  		= $p{ressource};
	my $PName 		= $p{nodename};
	my $PSize 		= $p{ressource_size};
	my $ref_ResPartner  	= $p{res_partner};
	my $ref_ResInReplay 	= $p{res_inreplay};
	my $ref_ResInSync   	= $p{res_insync};
	my $ref_AULogfile	= $p{res_AULogfile};

        my $PStatus  = check_link "$mars_dir/$PRes/primary";
        my $PDevice  = check_link "$mars_dir/$PRes/device-$PName";  
        my $Ljoined  = check_link "$mars_dir/$PRes/device-$himself";
	
        ### status
        if ( $PStatus eq $PName ) {   
               	print_warn "as Primary, ",'blue';
        } else {
        	if ( $PDevice eq 0 ) {
                	print_warn "not joined, ",'red';
        	} else {
               	        print_warn "as Secondary, ",'blue';
		}
	}	
	

	### alive
	my @PAlive = lstat("$mars_dir/alive-$PName");
	if ( !$PAlive[9] ) { $PAlive[9]=0 };
	my $PAlive =  time()- $PAlive[9] - $alife_timeout;
	if ( $PAlive > 1  ) {
	        print_warn "Status: unknown (last message before $PAlive sec) !!!\n", 'red';
	} else {
		print_warn "Status: connected\n",'blue'; 
	}


        ### device
        # joined  ?
        if ( $PDevice eq 0 ) {
                if ( $params->{'long'} ) { print_warn "   -> Resource is not joined to this node\n", 'red'; }
                return; 
        }
        if ( $params->{'long'} ) {
                print "\tDevice  : ".check_link "$mars_dir/$PRes/data-$PName";
                print ", used as $PDevice";
                
                # check mountpint
                if ( $himself eq $PName ) {
                	my $PUDevice = "/dev/mars/$PDevice";
               		#print " and ";
                	if ( stat( $PUDevice) ) {
				open my $fh, '<', '/proc/mounts' or die $!;
				$PUDevice = ( grep { /^$PUDevice / } <$fh> )[0];
                		if ( $PUDevice ) {
                			$PUDevice = ( split / /, $PUDevice )[1];
	                		print_warn " and mountet as $PUDevice\n",'blue';
				} else {
					print_warn "\n\t\t---> TODO: enable to mount\n",'green';
				}
			} else {
	                	print_warn "\n\t\t---> HINT: unable to mount, Device is Secondary or mars is starting ...\n",'blue';			
			}
		} else {
			print "\n";
		}
        }
        $$ref_ResPartner++;


	### logfile
	my @PLogFile  = split (',', check_link "$mars_dir/$PRes/replay-$PName" );
	my @PLogLink  = split ("-", $PLogFile[0]);
	# TODO: kein Logfile vorhanden ...
	my $PLogName  = "$PLogLink[0]-$PLogLink[1]";
	my $PLogSize  = -s "$mars_dir/$PRes/$PLogFile[0]";
	if ( !$PLogFile[1] ) { $PLogFile[1] = 0; $PLogFile[2] = 0; }
	if (( !$PLogSize ) || ( $PLogSize eq 0 )) { $PLogSize = 0.0001; }
	if ( $params->{'long'} ) {
		printf "\tLogfile : %s with %s bytes (%.3fGB) received\n", $PLogName, $PLogSize, ( $PLogSize/1024/1024/1024 );
		if ( $Ljoined eq "0" || $PLogSize eq "0.0001" ) {
			print_warn "\t\t---> TODO: Logfile inactive or empty (Size: $PLogSize)\n", 'red';
		}
		if ( ( $ref_AULogfile ) && !($PLogName eq $ref_AULogfile) ) {
			print_warn "\t\t---> TODO: Logfile Version not actual = ($PLogName ! $ref_AULogfile)\n", 'red';
		}
	}
	

	### replay
	my $RStatus = ( $PLogFile[1] / $PLogSize ) * 100;
	if ( $Ljoined eq "0" || $PLogSize eq "1" ) { $RStatus = 0; }
	$$ref_ResInReplay = $RStatus;
	if ( $params->{'long'} ) {
		printf "\tReplayed: %s bytes (%.3fGB) replayed, Todo %d (%.3fGB) = ", 
			$PLogFile[1], ( $PLogFile[1]/1024/1024/1024 ), 
			$PLogFile[2], ( $PLogFile[2]/1024/1024/1024 );
		$RStatus = sprintf("%.2f", $RStatus);
		if (( $RStatus < 1 ) && ( $PLogSize != 0.0001 )) {
			print_warn "$RStatus%\n\t\t---> TODO: Replay not started, Logfile inactive or empty (Size: $PLogSize)\n", 'red';
		} elsif (( $RStatus < 100 ) && ( $PLogSize != 0.0001 )) {
			print_warn "$RStatus%\n\t\t---> WORK: Replay in progress = ($RStatus% < 100.00%)\n", 'red';
                } elsif ( $PLogFile[2] > 0 ) {
                        $RStatus = sprintf("%.2f", ($PLogFile[1]-$PLogFile[2])/$PLogFile[1] * 100);
                        print_warn "$RStatus%\n", 'red';
		} elsif ( $PLogSize = 0.0001 ) {
		        $RStatus = "100.00";
			print_warn "$RStatus%\n", 'green';
		} else {
			print_warn "$RStatus%\n", 'green';
		}			
	}	
	$$ref_ResInReplay = $RStatus;
	

	### sync
	my $PSyncsize = check_link "$mars_dir/$PRes/syncstatus-$PName";
	my $SStatus = ( $PSyncsize / $PSize * 100);
	$$ref_ResInSync = $SStatus;
	if ( $params->{'long'} ) {
		printf "\tSync    : %s bytes (%.3fTB) synced = ", $PSyncsize, ( $PSyncsize/1024/1024/1024/1024);
                $SStatus = sprintf("%.2f", $SStatus);
                if ( $SStatus < 100) {
                        print_warn "$SStatus%\n\t\t---> WORK: Sync in progress = ($SStatus% < 100.00%)\n", 'red';
		} else {
			print_warn "$SStatus%\n", 'green';
                }
	}

	
	if ( $params->{'long'} ) {
        	### actual
        	my $ActStatus  = check_link "$mars_dir/$PRes/actual-$PName/is-primary";
        	if ( $ActStatus eq 1 ) {
	               print "\tActual  : Status Primary, used Device="; convert_link "$mars_dir/$PRes/actual-$PName/device-$PDevice";
	               print "\n";
        	} else {
                       print "\tActual  : Status Secondary, Syncstatus="; convert_link "$mars_dir/$PRes/actual-$PName/copy-syncstatus-$PName";
                       print ", Logfileupdate="; convert_link "$mars_dir/$PRes/actual-$PName/logfile-update";
                       print "\n";
                }

        	### switch
        	print "\tSwitch  : Attach="; convert_link "$mars_dir/$PRes/todo-$PName/attach";
        	print ", Connect="; convert_link "$mars_dir/$PRes/todo-$PName/connect";
        	print ", Sync="; convert_link "$mars_dir/$PRes/todo-$PName/sync";
        	print ", AllowReplay="; convert_link "$mars_dir/$PRes/todo-$PName/allow-replay";
        	print "\n";
        }
        return $PLogName;
}


#########################################################################################
###
sub check_logfile {
        my $LResource 	= shift;
        my $LPartner  	= shift;
	my $oldEqual 	= 0;
	my $LogCount	= 0;
	my $LogFailed   = 0;
	print_warn "   -> History Replay/Status\n",'blue';

	my @logfile 	= <$mars_dir/$LResource/log*>;
	foreach my $logfile (@logfile) {
		my $LVersion    = $logfile;
		$LVersion       =~ s/^.*log-([0-9]+)-.*$/$1/;
		my $LogStatus   = check_link "$logfile";
		my $allEqual    = 1;
		if ( $LogStatus eq 0 ) { 
#			# info to old logfiles (old loop) ...
#			if (( $oldEqual eq 1 ) && ( $LogFailed eq 0 )) {
#                                print_warn "\t\t---> TODO: logfiles has all equal Sizes and Checksums, can be deleted?\n",'green';
#                                # TODO delete Links
#			} elsif (( $oldEqual eq 1 ) && ( $LogFailed ne 0 )) {
#                                print_warn "\t\t---> TODO: logfiles has same other errors - Please check History of Logfiles\n",'blue';
#			}
			

			# found logfile
			my $OldCheck;
			my $OldSize;
			my $LogSize = -s "$logfile";
			print "\tLogfile Version: $LVersion - Size: $LogSize\n";

			# check other ...
			my @LVersion = <$mars_dir/$LResource/version-$LVersion*>;
			foreach my $LVersion (@LVersion) {
				my @LogDetail = split (',', check_link "$LVersion" );
				my $LogServer = $LVersion;
				$LogServer    =~ s/.*[0-9]-//;
				$LogCount++;
				print "\t\tSource: $LogServer, Check: $LogDetail[0], ReplayPosition: $LogDetail[2], Todo: $LogDetail[3] blocks\n";
				# Initial Values
				if ( !defined $OldCheck ) {
				      # new
				      $OldCheck = $LogDetail[0];
                                      $OldSize  = $LogDetail[2];
                                      $allEqual = 1; 
                                } elsif (!(( $LogDetail[0] eq $OldCheck ) and ( $LogDetail[2] eq $OldSize ))) { 
				      # not same
				      $allEqual = 0;
				      if ( !($LogDetail[0] eq $OldCheck) && ($LogDetail[2] eq $OldSize) ) {
				      		print_warn "\t\t---> TODO: check logfiles has not equal Checksums and same size !!!\n",'red';
				      		$LogFailed = 1;
                                      } elsif ( $LogFailed eq 0 )  { 
			      			print_warn "\t\t---> TODO: check logfiles has not equal Checksums and different size ???\n",'red';
				      		$LogFailed = 1;
				      }
                                } else {
				      # same
				      $allEqual = 1;
                                }

                                # check bad values
				if ( $LogDetail[3] < 0 ) {
					print_warn "\t\t---> TODO: Found bad values ($LogDetail[3])it's ok ???\n", 'red';
			      		$LogFailed = 1;
				}
			}
			if ( $allEqual eq 1 ) {
                                $oldEqual = 1;
			} else {
				$oldEqual = 0;
			}
			# check Count Logfiles
                        if ( !($LogCount eq $LPartner) ) {
                        	print_warn "\t\t---> TODO: Count of Logfiles different (have:$LPartner found:$LogCount)\n", 'red';
		      		$LogFailed = 1;
                        	$oldEqual = 0;
			}
			$LogCount=0;
###
			if (( $oldEqual eq 1 ) && ( $LogFailed eq 0 )) {
                                print_warn "\t\t*---> TODO: logfiles has all equal Sizes and Checksums, can be deleted?\n",'green';
                                # TODO check aktuell logfile
                                # TODO delete links !
			} elsif (( $oldEqual eq 1 ) && ( $LogFailed ne 0 )) {
                                print_warn "\t\t*---> TODO: logfiles has same other errors - Please check History of Logfiles\n",'red';
			}

###
                }
	}
}

#########################################################################################
### avg_limit
sub check_avg_limit {
	if ( open (MARS_LOADAVG, "< /proc/sys/mars/loadavg_limit") ) {
		my $mars_avg_limit;
	       	while (<MARS_LOADAVG>) {
	       		$mars_avg_limit = $_;
		}
		close MARS_LOADAVG;
		print_warn "-> Node AVG-Speed-Limit is ", 'bold';
		if (( !$mars_avg_limit ) || ( $mars_avg_limit < "1" )) {
			print_warn "unset, used full speed\n", 'green';
		} else { 
			print_warn "is $mars_avg_limit", 'red';
		}
	}
}


#########################################################################################
### diskfull
sub check_disk_is_full {
	my @diskfull = glob("$mars_dir/rest-space-*");
	my $diskfull_mars = "";
	print_warn "-> Diskspace on Cluster:", 'bold';
	if ( @diskfull ) { 
		foreach ( @diskfull) {
	               	my $diskfull_space     = check_link "$_";                        
	               	my $diskfull_system = $_;                
	               	$diskfull_system    =~ s!/mars/rest-space-!!;
	               	if ( $diskfull_space < 1 ) {
	               		$diskfull_space = sprintf ("%.2f", $diskfull_space / 1024 );
	               		if ( $diskfull_system eq $himself ) {
	               			print_warn "\n\t-> ERROR ! Local Partition $mars_dir full ($diskfull_space kb Limit) !!! mars is stopping !!!\n\n", "red";
	               			$diskfull_mars = "$diskfull_mars,$diskfull_system";
	               		} else {
	               			print_warn "\n\t-> WARNING ! Remotesystem $diskfull_system have mars-disk full ($diskfull_space kb Limit) !!!\n\n", "red";
	               			$diskfull_mars = "$diskfull_mars,$diskfull_system";
	               		}
			}
		}
	}
	# TODO /0
	if ( !$diskfull_mars ) {
		print_warn " ok\n", 'green';
	}
}

#########################################################################################
### check /proc/sys/mars/warnings
sub check_mars_warn {
        if ( open  (MARS_WARN, "< /proc/sys/mars/warnings") ) {
                my $mars_warn = "";
                while ( <MARS_WARN> ) {
                    if ( m/^(\d+\.\d+)/ ) {
                        s/^(\d+\.\d+)/strftime("%a %b %e %H:%M:%S %Y:", localtime($1))/e;
                    } else {
                        $_ = localtime(0) . ': ' . $_;
                    }
                    s/MARS_WARN\s+//;
                    $mars_warn = "$mars_warn\t$_";
                }
                close MARS_WARN;
                if ( $mars_warn ne "" ) { print_warn "-> MARS WARNINGS:\n", 'red'; print "$mars_warn" }
        } 
}       

#########################################################################################
### check /proc/sys/mars/errors
sub check_mars_error {
        if ( open (MARS_ERROR, "< /proc/sys/mars/errors") ) {
                my $mars_error = "";
                while ( <MARS_ERROR> ) {
                    if ( m/^(\d+\.\d+)/ ) {
                        s/^(\d+\.\d+)/strftime("%a %b %e %H:%M:%S %Y:", localtime($1))/e;
                    } else {
                        $_ = localtime(0) . ': ' . $_;
                    }
                    s/MARS_ERROR\s+//;
                    $mars_error = "$mars_error\t$_";
                }
                close MARS_ERROR;
                if ( $mars_error ne "" ) { print_warn "-> MARS ERRORS:\n", 'red'; print "$mars_error" }
        }
}

#########################################################################################
### main loop ...
while(1) {
	print $clearscreen;
        my $dateFormat = Date::Language->new('English');
	#########################################################################################
	### read mars infos
	my %mars_info;
	open ( my $lsmod_handle,'-|','lsmod | grep mars' ) || die "blub ... $!";
	if (!<$lsmod_handle>) {
		print_warn "Module Mars not running\n",'red';
                sleep(10);
                next;
		#exit 1;
	}
	
	open ( my $modinfo_handle, '-|', 'modinfo mars' ) || die "cannot run modinfo mars: $!";
	while ( my $line = <$modinfo_handle> ) {
		chomp $line;
		my ( $key, $value) = split /: +/, $line;
		if ( $value) {
			$mars_info{$key} = $value;
		}
	}
	
	if ( $mars_info{author} eq "") {
		print_warn "Module Mars not running\n",'red';
		exit 1;
	}
	
	# status
	print_warn "MARS Status - $himself, $version",'blue';
	# TODO: if ( $$params->{'???'} ) { print_warn ", Listmodus $???",'blue'; }
	if ( $params->{'resource'}  ) { print_warn ", Ressource: $params->{'resource'}",'blue'; }
	print "\n";
	

	# marsadm
	my $MAVersion = qx"marsadm version";
	print_warn "MARS Admin  - $MAVersion",'blue';
	
	
	# module
	print_warn "MARS Module - $mars_info{version}\n",'blue';

	
	# kernel
	my $KVersion = '/proc/version';
	open my $Kfh, '<', "$KVersion" or die $!;
	$KVersion = ( grep { /^Linux/ } <$Kfh> )[0];
	$KVersion = ( split / /, $KVersion )[2];
	print_warn "MARS Kernel - $KVersion\n",'blue';
	
	print "-------------------------------------------------------------------------------\n";
	
        if($params->{version} || $params->{v}) {
            exit 0;
        }

	#########################################################################################
	### check load-limit
	check_avg_limit;

	#########################################################################################
	### check resources
	opendir my $dirhandle, $mars_dir or die "Cannot open $mars_dir: $!";
	my @resources = grep { /^res/ && -d "$mars_dir/$_" } readdir $dirhandle;
	if ( !@resources ) {
	        print_warn "---> no resources found\n", 'red';
	        exit;
	}
	
	
	foreach my $res (@resources) {
		my $ResPartner     = 0;
		my $ResInReplay    = 0;
		my $ResInReplaySum = 0;
		my $ResInReplayPar = 0;
		my $ResInSync      = 0;
		my $ResInSyncSum   = 0;
		my $ResInSyncPar   = 0;
		my $res_name       = $res;
		$res_name          =~ s/^resource-//;
		if ( $params->{'resource'} ) {
			if (!( $params->{'resource'} eq $res_name)) {
				next;
			}
		}
		my $res_size     = check_link "$mars_dir/$res/size";
	        if ( $res_size eq 0 ) { $res_size = 1 };
	        my $res_tbsize   = ( $res_size) / 1024 / 1024 /1024 / 1024;
	        my $res_master   = check_link "$mars_dir/$res/primary";
	        if ( $res_master eq 0 ) { $res_master = "unknown" };
	        print color 'bold' if ( $is_tty );
	        printf  "-> check resource %s, with %d bytes (%.3fTB), Primary Node is %s\n", $res_name, $res_size, $res_tbsize, $res_master;
	        print color 'reset' if ( $is_tty );
		
	
		### hin self
		print_warn "   -> local node ($himself) ",'bold';
		my $ActualUsedLogfile = display_partner(
			ressource	=> $res,
			nodename	=> $himself,
			ressource_size	=> $res_size,
			res_partner	=> \$ResPartner,
			res_inreplay    => \$ResInReplay,
			res_insync      => \$ResInSync,
			res_AULogfile   => "",
		);
		$ResInReplaySum = $ResInReplay;
		$ResInReplayPar = 1;
		$ResInSyncSum   = $ResInSync;
		$ResInSyncPar   = 1;
	
		# not joined ...
		if ( $ResPartner eq 1) {
			### partners
			opendir my $server_dh, "$mars_dir/$res" or die "Cannot open $mars_dir/$res: $!";
			my @servers = grep { /^data/ && readlink "$mars_dir/$res/$_" } readdir $server_dh;
			@servers    = sort (@servers);
			foreach my $partner (@servers) {
				$partner  =~ s/^data-//;
				if ( $partner eq $himself ) { next; }
				print_warn "   -> remote node ($partner) ", 'bold';
				display_partner(
					ressource	=> $res,
					nodename	=> $partner,
					ressource_size	=> $res_size,
					res_partner	=> \$ResPartner,
					res_inreplay    => \$ResInReplay,
					res_insync      => \$ResInSync,
					res_AULogfile   => $ActualUsedLogfile,
					);
			}
			if ($ResInReplay != 100) { 
			    $ResInReplaySum = $ResInReplaySum + $ResInReplay;
			    $ResInReplayPar = $ResInReplayPar + 1; 
                        }
			if ($ResInSync != 100) { 
			    $ResInSyncSum   = $ResInSyncSum + $ResInSync;
			    $ResInSyncPar = $ResInSyncPar + 1; 
                        }
		}
	
		
		### modus
	        if ( $ResPartner eq 0) { 
	            if ( $params->{'long'} ) { print_warn "   -> modus for $res_name is remote ($ResPartner nodes)\n",'bold'; }
	        } elsif ( $ResPartner eq 1 ) { 
		    if ( $params->{'long'} ) { print_warn "   -> modus for $res_name is standalone ($ResPartner node)\n",'bold'; }
	        } else {
		    print_warn "   -> modus for $res_name is cluster ($ResPartner nodes), ",'bold';
	            $ResInReplaySum = sprintf("%.2f", $ResInReplaySum / $ResInReplayPar );
	            $ResInSyncSum   = sprintf("%.2f", $ResInSyncSum / $ResInSyncPar );
	            print_warn "ClusterSummary: ", 'black';
	            if ( $ResInReplaySum eq "100.00" ) {
	        	print_warn "in replay ($ResInReplaySum%),", 'green';
	            } elsif ( $ResInReplaySum eq "0.00" ) {
	        	print_warn "inaktiv ($ResInReplaySum%),", 'red';
	            } else {
		        print_warn "not in replay ($ResInReplaySum%),", 'red';
	            }
		    if ( $ResInSyncSum eq "100.00" ) {
			print_warn " in sync ($ResInSyncSum%)\n", 'green';
		    } else {
		        print_warn " not in sync ($ResInSyncSum%)\n", "red";
		    }
	        }
	
	
	        ### debug output
	        if ( $params->{'long'} ) { 
	        	### history
	        	if ( $params->{'history'} ) {
	        		check_logfile( $res, $ResPartner );
	        	}
	        	#
	        	#
	        	#
	        	

		} # end debug

	} # end foreach

        ### debug output
        if ( $params->{'long'} ) { 
	        	### mars-warn/error
			check_disk_is_full;
			if  ( $params->{'debug'} ) {
	        	    check_mars_warn;
	        	    check_mars_error;
                        }
	}


	print color 'reset';
	exit if (not $params->{'interval'});
	sleep($params->{'interval'});
}
exit;