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gexpr.ph
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gexpr.ph
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# copyright, 2003-2009 Hewlett-Packard Development Company, LP
# debug
# 1 - print Var, Units and Values
# 2 - only print sent 'changed' Var/Units/Vales
# 4 - dump packet
# 8 - do not open/use socket (typically used with other flags)
# 16 - print socket open/close info
# the 'magic' g/G flag
# -g ONLY report well-known gangia variables
# -G report ALL variables but replace those known by ganglia with their ganglia names
our $gexInterval;
my ($gexSubsys, $gexDebug, $gexCOFlag, $getSendCount, $gexTTL, $gexSocket, $gexPaddr);
my ($gexHost, $gexPort);
my (%gexDataLast, %gexDataMin, %gexDataMax, %gexDataTot, %gexTTL);
my ($gexMinFlag, $gexMaxFlag, $gexAvgFlag, $gexTotFlag)=(0,0,0,0);
my $gexPktSize=1024;
my $gexOneTB=1024*1024*1024*1024;
my $gexCounter=0;
my $gexFlags;
my $gexGFlag=0;
my $gexMcast;
my $gexMcastFlag=0;
my $gexOutputFlag=1;
my $gexColInt;
# This sets a flag as soon as we 'require' the module and tells collectl this
# module does socket communications w/o -A and so is ok to run as daemon
# without requiring -f or -A.
$exportComm |= 1;
sub gexprInit
{
my $hostport=shift;
help() if $hostport eq 'h';
error('--showcolheader not supported by gexpr') if $showColFlag;
# Just like vmstat
error("-f requires either --rawtoo or -P") if $filename ne '' && !$rawtooFlag && !$plotFlag;
error("-P or --rawtoo require -f") if $filename eq '' && ($rawtooFlag || $plotFlag);
# If we ever run with a ':' in the inteval, we need to be sure we're
# only looking at the main one.
my $gexInterval1=(split(/:/, $interval))[0];
# Options processing. must be combo of co, d, i and s (for now)
$gexDebug=$gexCOFlag=0;
$gexInterval='';
$gexSubsys=$subsys;
$gexTTL=5;
foreach my $option (@_)
{
my ($name, $value)=split(/=/, $option);
error("invalid gexpr option '$name'") if $name!~/^[dgGhis]?$|^align|^co$|^ttl$|^min$|^max$|^avg$|^tot$/;
$gexAlignFlag=1 if $name eq 'align';
$gexCOFlag=1 if $name eq 'co';
$gexDebug=$value if $name eq 'd';
$gexInterval=$value if $name eq 'i';
$gexGFlag+=1 if $name eq 'g';
$gexGFlag+=2 if $name eq 'G';
$gexSubsys=$value if $name eq 's';
$gexTTL=$value if $name eq 'ttl';
$gexMinFlag=1 if $name eq 'min';
$gexMaxFlag=1 if $name eq 'max';
$gexAvgFlag=1 if $name eq 'avg';
$gexTotFlag=1 if $name eq 'tot';
help() if $name eq 'h';
}
error("only 1 of 'g' or 'G' with 'gexpr'") if $gexGFlag>2;
error("gexpr does not support standard collectl socket I/O via -A") if $sockFlag;
error("host:port must be specified as first parameter") if !defined($hostport) || $hostport eq '';
($gexHost, $gexPort)=split(/:/, $hostport);
error("the port number must be specified") if !defined($gexPort) || $gexPort eq '';
$gexMcastFlag=1 if $gexHost=~/^(\d+)/ && $1>=225 && $1<=239;
error("gexpr subsys options '$gexSubsys' not a proper subset of '$subsys'")
if $subsys ne '' && $gexSubsys ne '' && $gexSubsys!~/^[$subsys]+$/;
$gexColInt=(split(/:/, $interval))[0];
$gexInterval=$gexColInt if $gexInterval eq '';
# convert to the number of samples we want to send
$gexSendCount=int($gexInterval/$gexColInt);
error("gexpr interval of '$gexInterval' is not a multiple of '$gexColInt' seconds")
if $gexColInt*$gexSendCount != $gexInterval;
$gexFlags=$gexMinFlag+$gexMaxFlag+$gexAvgFlag+$gexTotFlag;
error("only 1 of 'min', 'max', 'avg' or 'tot' with 'gexpr'") if $gexFlags>1;
error("'min', 'max', 'avg' & 'tot' require gexpr 'i' that is > collectl's -i")
if $gexFlags && $gexSendCount==1;
if ($gexAlignFlag)
{
my $div1=int(60/$gexColInt);
my $div2=int($gexColInt/60);
error("'align' requires collectl interval be a factor or multiple of 60 seconds")
if ($gexColInt<=60 && $div1*$gexColInt!=60) || ($gexColInt>60 && $div2*60!=$gexColInt);
error("'align' only makes sense when multiple samples/interval") if $gexInterval<=$gexColInt;
error("'lexpr,align' requires -D or --align") if !$gexAlignFlag && !$daemonFlag;
}
# Since gexpr DOES write over a socket but does not use -A, make sure the default
# behavior for -f logs matches that of -A
$rawtooFlag=1 if $filename ne '' && !$plotFlag;
# O p e n S o c k e t
if (!$gexMcastFlag)
{
openSocket($gexHost, $gexPort);
}
else
{
error("must install IO::Socket::Multcast to use multicast feature")
if !eval {require "IO/Socket/Multicast.pm"};
$gexMcast = IO::Socket::Multicast->new() or die "create group";
}
}
sub gexpr
{
# if not time to print and we're not doing min/max/avg/tot, there's nothing to do.
# BUT always make sure time aligns to top of minute based on i=
$gexCounter++;
$gexOutputFlag=(($gexCounter % $gexSendCount) == 0) ? 1 : 0 if !$gexAlignFlag;
$gexOutputFlag=(!(int($lastSecs[$rawPFlag]) % $gexInterval)) ? 1 : 0 if $gexAlignFlag;
return if (!$gexOutputFlag && $gexFlags==0);
if ($gexSubsys=~/c/i)
{
if ($gexSubsys=~/c/)
{
# CPU utilization is a % and we don't want to report fractions
my $i=$NumCpus;
if ($gexGFlag) # for both 'g' OR 'G'
{
sendData('cpu_user', 'percent', $userP[$i]);
sendData('cpu_nice', 'percent', $niceP[$i]);
sendData('cpu_system', 'percent', $sysP[$i]);
sendData('cpu_wio', 'percent', $waitP[$i]);
sendData('cpu_idle', 'percent', $idleP[$i]);
sendData('cpu_num', 'CPUs', $NumCpus);
sendData('proc_total', 'Load/Procs', $loadQue);
sendData('proc_run', 'Load/Procs', $loadRun);
sendData('load_one', 'Load/Procs', $loadAvg1);
sendData('load_five', 'Load/Procs', $loadAvg5);
sendData('load_fifteen', 'Load/Procs', $loadAvg15);
}
if (!$gexGFlag) # if not 'g' use standard collectl names
{
sendData('cputotals.user', 'percent', $userP[$i]);
sendData('cputotals.nice', 'percent', $niceP[$i]);
sendData('cputotals.sys', 'percent', $sysP[$i]);
sendData('cputotals.wait', 'percent', $waitP[$i]);
sendData('cputotals.idle', 'percent', $idleP[$i]);
}
if ($gexGFlag!=1) # 'G' or nothing
{
sendData('cputotals.irq', 'percent', $irqP[$i]);
sendData('cputotals.soft', 'percent', $softP[$i]);
sendData('cputotals.steal','percent', $stealP[$i]);
sendData('ctxint.ctx', 'switches/sec', $ctxt/$intSecs);
sendData('ctxint.int', 'intrpts/sec', $intrpt/$intSecs);
sendData('ctxint.proc', 'pcreates/sec', $proc/$intSecs);
sendData('ctxint.runq', 'runqSize', $loadQue);
}
if (!$gexGFlag) # do it again so that we report ALL cpu %s together
{
sendData('cpuload.avg1', 'loadAvg1', $loadAvg1);
sendData('cpuload.avg5', 'loadAvg5', $loadAvg5);
sendData('cpuload.avg15', 'loadAvg15', $loadAvg15);
}
}
if ($gexSubsys=~/C/)
{
for (my $i=0; $i<$NumCpus; $i++)
{
sendData("cpuinfo.user.cpu$i", 'percent', $userP[$i]);
sendData("cpuinfo.nice.cpu$i", 'percent', $niceP[$i]);
sendData("cpuinfo.sys.cpu$i", 'percent', $sysP[$i]);
sendData("cpuinfo.wait.cpu$i", 'percent', $waitP[$i]);
sendData("cpuinfo.irq.cpu$i", 'percent', $irqP[$i]);
sendData("cpuinfo.soft.cpu$i", 'percent', $softP[$i]);
sendData("cpuinfo.steal.cpu$i", 'percent', $stealP[$i]);
sendData("cpunifo.idle.cpu$i", 'percent', $idleP[$i]);
sendData("cpuinfo.intrpt.cpu$i",'percent', $intrptTot[$i]);
}
}
}
if ($gexSubsys=~/d/i && $gexGFlag!=1)
{
if ($gexSubsys=~/d/)
{
sendData('disktotals.reads', 'reads/sec', $dskReadTot/$intSecs);
sendData('disktotals.readkbs', 'readkbs/sec', $dskReadKBTot/$intSecs);
sendData('disktotals.writes', 'writes/sec', $dskWriteTot/$intSecs);
sendData('disktotals.writekbs', 'writekbs/sec', $dskWriteKBTot/$intSecs);
}
if ($gexSubsys=~/D/)
{
for (my $i=0; $i<@dskOrder; $i++)
{
# preserve display order but skip any disks not seen this interval
$dskName=$dskOrder[$i];
next if !defined($dskSeen[$i]);
next if ($dskFiltKeep eq '' && $dskName=~/$dskFiltIgnore/) || ($dskFiltKeep ne '' && $dskName!~/$dskFiltKeep/);
sendData("diskinfo.reads.$dskName", 'reads/sec', $dskRead[$i]/$intSecs);
sendData("diskinfo.readkbs.$dskName", 'readkbs/sec', $dskReadKB[$i]/$intSecs);
sendData("diskinfo.writes.$dskName", 'writes/sec', $dskWrite[$i]/$intSecs);
sendData("diskinfo.writekbs.$dskName", 'writekbs/sec', $dskWriteKB[$i]/$intSecs);
}
}
}
if ($gexSubsys=~/f/ && $gexGFlag!=1)
{
if ($nfsSFlag)
{
sendData('nfsinfo.SRead', 'SvrReads/sec', $nfsSReadsTot/$intSecs);
sendData('nfsinfo.SWrite', 'SvrWrites/sec', $nfsSWritesTot/$intSecs);
sendData('nfsinfo.Smeta', 'SvrMeta/sec', $nfsSMetaTot/$intSecs);
sendData('nfsinfo.Scommit', 'SvrCommt/sec' , $nfsSCommitTot/$intSecs);
}
if ($nfsCFlag)
{
sendData('nfsinfo.CRead', 'CltReads/sec', $nfsCReadsTot/$intSecs);
sendData('nfsinfo.CWrite', 'CltWrites/sec', $nfsCWritesTot/$intSecs);
sendData('nfsinfo.Cmeta', 'CltMeta/sec', $nfsCMetaTot/$intSecs);
sendData('nfsinfo.Ccommit', 'CltCommt/sec' , $nfsCCommitTot/$intSecs);
}
}
if ($gexSubsys=~/i/ && $gexGFlag!=1)
{
sendData('inodeinfo.dentnum', 'dentrynum', $dentryNum);
sendData('inodeinfo.dentunused', 'dentryunused', $dentryUnused);
sendData('inodeinfo.fhandalloc', 'filesalloc', $filesAlloc);
sendData('inodeinfo.fhandmpct', 'filesmax', $filesMax);
sendData('inodeinfo.inodenum', 'inodeused', $inodeUsed);
}
if ($gexSubsys=~/l/ && $gexGFlag!=1)
{
if ($CltFlag)
{
sendData('lusclt.reads', 'reads/sec', $lustreCltReadTot/$intSecs);
sendData('lusclt.readkbs', 'readkbs/sec', $lustreCltReadKBTot/$intSecs);
sendData('lusclt.writes', 'writes/sec', $lustreCltWriteTot/$intSecs);
sendData('lusclt.writekbs', 'writekbs/sec', $lustreCltWriteKBTot/$intSecs);
sendData('lusclt.numfs', 'filesystems', $NumLustreFS);
}
if ($MdsFlag)
{
my $getattrPlus=$lustreMdsGetattr+$lustreMdsGetattrLock+$lustreMdsGetxattr;
my $setattrPlus=$lustreMdsReintSetattr+$lustreMdsSetxattr;
my $varName=($cfsVersion lt '1.6.5') ? 'reint' : 'unlink';
my $varVal= ($cfsVersion lt '1.6.5') ? $lustreMdsReint : $lustreMdsReintUnlink;
sendData('lusmds.gattrP', 'gattrP/sec', $getattrPlus/$intSecs);
sendData('lusmds.sattrP', 'sattrP/sec', $setattrPlus/$intSecs);
sendData('lusmds.sync', 'sync/sec', $lustreMdsSync/$intSecs);
sendData("lusmds.$varName", "$varName/sec", $varVal/$intSecs);
}
if ($OstFlag)
{
sendData('lusost.reads', 'reads/sec', $lustreReadOpsTot/$intSecs);
sendData('lusost.readkbs', 'readkbs/sec', $lustreReadKBytesTot/$intSecs);
sendData('lusost.writes', 'writes/sec', $lustreWriteOpsTot/$intSecs);
sendData('lusost.writekbs', 'writekbs/sec', $lustreWriteKBytesTot/$intSecs);
}
}
if ($gexSubsys=~/L/ && $gexGFlag!=1)
{
if ($CltFlag)
{
# Either report details by filesystem OR OST
if ($lustOpts!~/O/)
{
for (my $i=0; $i<$NumLustreFS; $i++)
{
sendData("lusost.reads.$lustreCltFS[$i]", 'reads/sec', $lustreCltRead[$i]/$intSecs);
sendData("lusost.readkbs.$lustreCltFS[$i]", 'readkbs/sec', $lustreCltReadKB[$i]/$intSecs);
sendData("lusost.writes.$lustreCltFS[$i]", 'writes/sec', $lustreCltWrite[$i]/$intSecs);
sendData("lusost.writekbs.$lustreCltFS[$i]", 'writekbs/sec', $lustreCltWriteKB[$i]/$intSecs);
}
}
else
{
for (my $i=0; $i<$NumLustreCltOsts; $i++)
{
sendData("lusost.reads.$lustreCltOsts[$i]", 'reads/sec', $lustreCltLunRead[$i]/$intSecs);
sendData("lusost.readkbs.$lustreCltOsts[$i]", 'readkbs/sec', $lustreCltLunReadKB[$i]/$intSecs);
sendData("lusost.writes.$lustreCltOsts[$i]", 'writes/sec', $lustreCltLunWrite[$i]/$intSecs);
sendData("lusost.writekbs.$lustreCltOsts[$i]", 'writekbs/sec', $lustreCltLunWriteKB[$i]/$intSecs);
}
}
}
if ($OstFlag)
{
for ($i=0; $i<$NumOst; $i++)
{
sendData("lusost.reads.$lustreOsts[$i]", 'reads/sec', $lustreReadOps[$i]/$intSecs);
sendData("lusost.readkbs.$lustreOsts[$i]", 'readkbs/sec', $lustreReadKBytes[$i]/$intSecs);
sendData("lusost.writes.$lustreOsts[$i]", 'writes/sec', $lustreWriteOps[$i]/$intSecs);
sendData("lusost.writekbs.$lustreOsts[$i]", 'writekbs/sec', $lustreWriteKBytes[$i]/$intSecs);
}
}
}
if ($gexSubsys=~/m/)
{
if ($gexGFlag) # 'g' or 'G'
{
sendData('mem_total', 'Bytes', $memTot);
sendData('mem_free', 'Bytes', $memFree);
sendData('mem_shared', 'Bytes', $memShared);
sendData('mem_buffers', 'Bytes', $memBuf);
sendData('mem_cached', 'Bytes', $memCached);
sendData('swap_total', 'Bytes', $swapTotal);
sendData('swap_free', 'Bytes', $swapFree);
}
if (!$gexGFlag) # neither
{
sendData('meminfo.tot', 'kb', $memTot);
sendData('meminfo.free', 'kb', $memFree);
sendData('meminfo.shared', 'kb', $memShared);
sendData('meminfo.buf', 'kb', $memBuf);
sendData('meminfo.cached', 'kb', $memCached);
sendData('swapinfo.total', 'kb', $swapTotal);
sendData('swapinfo.free', 'kb', $swapFree);
}
if ($gexGFlag!=1) # nothing or 'G'
{
sendData('meminfo.used', 'kb', $memUsed);
sendData('meminfo.slab', 'kb', $memSlab);
sendData('meminfo.map', 'kb', $memMap);
sendData('meminfo.hugetot', 'kb', $memHugeTot);
sendData('meminfo.hugefree', 'kb', $memHugeFree);
sendData('meminfo.hugersvd', 'kb', $memHugeRsvd);
sendData('swapinfo.used', 'kb', $swapUsed);
sendData('swapinfo.in', 'swaps/sec', $swapin/$intSecs);
sendData('swapinfo.out', 'swaps/sec', $swapout/$intSecs);
sendData('pageinfo.fault', 'faults/sec', $pagefault/$intSecs);
sendData('pageinfo.majfault', 'majflt/sec', $pagemajfault/$intSecs);
sendData('pageinfo.in', 'pages/sec', $pagein/$intSecs);
sendData('pageinfo.out', 'pages/sec', $pageout/$intSecs);
}
}
# gexFlag doesn't apply
if ($gexSubsys=~/M/)
{
for (my $i=0; $i<$CpuNodes; $i++)
{
foreach my $field ('used', 'free', 'slab', 'map', 'anon', 'lock', 'act', 'inact')
{
sendData("numainfo.$field.$i", 'kb', $numaMem[$i]->{$field});
}
}
}
if ($gexSubsys=~/n/i)
{
if ($gexSubsys=~/n/)
{
if ($gexGFlag) # 'g' or 'G'
{
sendData('bytes_in', 'Bytes/sec', $netRxKBTot*1024/$intSecs);
sendData('bytes_out', 'Bytes/sec', $netTxKBTot*1024/$intSecs);
sendData('pkts_in', 'pkts/sec', $netRxPktTot/$intSecs);
sendData('pkts_out', 'pkts/sec', $netTxPktTot/$intSecs);
}
else # neither
{
sendData('nettotals.kbin', 'kb/sec', $netRxKBTot/$intSecs);
sendData('nettotals.pktin', 'pkts/sec', $netRxPktTot/$intSecs);
sendData('nettotals.kbout', 'kb/sec', $netTxKBTot/$intSecs);
sendData('nettotals.pktout', 'pkts/sec', $netTxPktTot/$intSecs);
}
}
if ($gexSubsys=~/N/)
{
for ($i=0; $i<@netOrder; $i++)
{
$netName=$netOrder[$i];
next if !defined($netSeen[$i]);
next if ($netFiltKeep eq '' && $netName=~/$netFiltIgnore/) || ($netFiltKeep ne '' && $netName!~/$netFiltKeep/);
next if $netName=~/lo|sit/;
sendData("nettotals.kbin.$netName", 'kb/sec', $netRxKB[$i]/$intSecs);
sendData("nettotals.pktin.$netName", 'pkts/sec', $netRxPkt[$i]/$intSecs);
sendData("nettotals.kbout.$netName", 'kb/sec', $netTxKB[$i]/$intSecs);
sendData("nettotals.pktout.$netName", 'pkts/sec', $netTxPkt[$i]/$intSecs);
}
}
}
if ($gexSubsys=~/s/ && $gexGFlag!=1)
{
sendData("sockinfo.used", 'sockets', $sockUsed);
sendData("sockinfo.tcp", 'sockets', $sockTcp);
sendData("sockinfo.orphan",'sockets', $sockOrphan);
sendData("sockinfo.tw", 'sockets', $sockTw);
sendData("sockinfo.alloc", 'sockets', $sockAlloc);
sendData("sockinfo.mem", 'sockets', $sockMem);
sendData("sockinfo.udp", 'sockets', $sockUdp);
sendData("sockinfo.raw", 'sockets', $sockRaw);
sendData("sockinfo.frag", 'sockets', $sockFrag);
sendData("sockinfo.fragm", 'sockets', $sockFragM);
}
if ($gexSubsys=~/t/ && $gexGFlag!=1)
{
sendData("tcpinfo.iperrs", 'num/sec', $ipErrors/$intSecs) if $tcpFilt=~/i/;
sendData("tcpinfo.tcperrs", 'num/sec', $tcpErrors/$intSecs) if $tcpFilt=~/t/;
sendData("tcpinfo.udperrs", 'num/sec', $udpErrors/$intSecs) if $tcpFilt=~/u/;
sendData("tcpinfo.icmperrs", 'num/sec', $icmpErrors/$intSecs) if $tcpFilt=~/c/;
sendData("tcpinfo.tcpxerrs", 'num/sec', $tcpExErrors/$intSecs) if $tcpFilt=~/T/;
}
if ($gexSubsys=~/x/i && $gexGFlag!=1)
{
if ($NumXRails)
{
$kbInT= $elanRxKBTot;
$pktInT= $elanRxTot;
$kbOutT= $elanTxKBTot;
$pktOutT=$elanTxTot;
}
if ($NumHCAs)
{
$kbInT= $ibRxKBTot;
$pktInT= $ibRxTot;
$kbOutT= $ibTxKBTot;
$pktOutT=$ibTxTot;
}
sendData("iconnect.kbin", 'kb/sec', $kbInT/$intSecs);
sendData("iconnect.pktin", 'pkt/sec', $pktInT/$intSecs);
sendData("iconnect.kbout", 'kb/sec', $kbOutT/$intSecs);
sendData("iconnect.pktout", 'pkt/sec', $pktOutT/$intSecs);
}
if ($gexSubsys=~/E/i && $gexGFlag!=1)
{
foreach $key (sort keys %$ipmiData)
{
for (my $i=0; $i<scalar(@{$ipmiData->{$key}}); $i++)
{
my $name=$ipmiData->{$key}->[$i]->{name};
my $inst=($key!~/power/ && $ipmiData->{$key}->[$i]->{inst} ne '-1') ? $ipmiData->{$key}->[$i]->{inst} : '';
sendData("env.$name$inst", $name, $ipmiData->{$key}->[$i]->{value}, '%s');
}
}
}
# if any imported data, it may want to include gexpr output. However this means getting a list of
# 3-tuples to call OUR formatting routines with so the import module doesn't have to.
# NOTE - the assumption is no ganglia specific counters. If there ever are, we'll need to remove
# restriction and ALL imports will have to deal with $gexFlag if called from here
if ($gexGFlag!=1)
{
my (@names, @units, @vals);
for (my $i=0; $i<$impNumMods; $i++) { &{$impPrintExport[$i]}('g', \@names, \@units, \@vals); }
foreach (my $i=0; $i<scalar(@names); $i++)
{
sendData($names[$i], $units[$i], $vals[$i]);
}
}
$gexCounter=0 if $gexOutputFlag;
}
sub openSocket
{
my $host=shift;
my $port=shift;
print "Opening Socket on $host:$port\n" if $gexDebug & 16;
my $iaddr = inet_aton($host) or logmsg('F', "Couldn't get address for '$host'");
$gexPaddr = sockaddr_in($port,$iaddr) or logmsg('F', "Couldn't convert address for '$host'");
my $proto = getprotobyname('udp') or logmsg('F', "Couldn't getprotbyname for '$host'");
socket($gexSocket, PF_INET, SOCK_DGRAM, $proto) or logmdg('F', "Couldn't open UDP socket");
print "Opened\n" if $gexDebug & 16;
}
# this code tightly synchronized with lexpr and graphite
sub sendData
{
my $name=shift;
my $units=shift;
my $value=shift;
$value=int($value);
# These are only undefined the very first time
if (!defined($gexTTL{$name}))
{
$gexTTL{$name}=$gexTTL;
$gexDataLast{$name}=-1;
}
# As a minor optimization, only do this when dealing with min/max/avg/tot values
if ($gexFlags)
{
# And while this should be done in init(), we really don't know how may indexes
# there are until our first pass through...
if ($gexCounter==1)
{
$gexDataMin{$name}=$gexOneTB;
$gexDataMax{$name}=0;
$gexDataTot{$name}=0;
}
$gexDataMin{$name}=$value if $gexMinFlag && $value<$gexDataMin{$name};
$gexDataMax{$name}=$value if $gexMaxFlag && $value>$gexDataMax{$name};
$gexDataTot{$name}+=$value if $gexAvgFlag || $gexTotFlag;
}
return('') if !$gexOutputFlag;
# A c t u a l S e n d H a p p e n s H e r e
# If doing min/max/avg, reset $value
if ($gexFlags)
{
$value=$gexDataMin{$name} if $gexMinFlag;
$value=$gexDataMax{$name} if $gexMaxFlag;
$value=$gexDataTot{$name} if $gexTotFlag;
$value=($gexDataTot{$name}/$gexCounter) if $gexAvgFlag;
}
# Always send send data if not CO mode,but if so only send when it has
# indeed changed OR TTL about to expire
my $valSentFlag=0;
if (!$gexCOFlag || $value!=$gexDataLast{$name} || $gexTTL{$name}==1)
{
$valSentFlag=1;
sendMetaPacket($name, $units);
sendDataPacket($name, $value);
$gexDataLast{$name}=$value;
}
# A fair chunk of work, but worth it
if ($gexDebug & 3)
{
my ($intSeconds, $intUsecs);
if ($hiResFlag)
{
# we have to fully qualify name because or 'require' vs 'use'
($intSeconds, $intUsecs)=Time::HiRes::gettimeofday();
}
else
{
$intSeconds=time;
$intUsecs=0;
}
$intUsecs=sprintf("%06d", $intUsecs);
my ($sec, $min, $hour)=localtime($intSeconds);
my $timestamp=sprintf("%02d:%02d:%02d.%s", $hour, $min, $sec, substr($intUsecs, 0, 3));
printf "$timestamp Name: %-25s Units: %-12s Val: %8d TTL: %d %s\n",
$name, $units, $value, $gexTTL{$name}, ($valSentFlag) ? 'sent' : ''
if $gexDebug & 1 || $valSentFlag;
}
# TTL only applies when in 'CO' mode, noting we already made expiration
# decision above when we saw counter of 1
if ($gexCOFlag)
{
$gexTTL{$name}-- if !$valSentFlag;
$gexTTL{$name}=$gexTTL if $valSentFlag || $gexTTL{$name}==0;
}
}
sub sendMetaPacket
{
my $name= shift;
my $units=shift;
my $string='';
$string.=pack('N', 0x80);
$string.=pack('N', length($myHost));
$string.=packString($myHost);
$string.=pack('N', length($name));
$string.=packString($name);
$string.=pack('N', 0); # spoof
$string.=pack('N', length('double'));
$string.=packString('double');
$string.=pack('N', length($name));
$string.=packString($name);
$string.=pack('N', length($units));
$string.=packString($units);
$string.=pack('N', 3); # slope
$string.=pack('N', 2*$gexTTL*$gexInterval); # time to live
$string.=pack('N', 0); # dmax
$string.=pack('N', 0);
sendUDP($string);
}
sub sendDataPacket
{
my $name= shift;
my $value=shift;
my $string='';
$string.=pack('N', 0x85);
$string.=pack('N', length($myHost));
$string.=packString($myHost);
$string.=pack('N', length($name));
$string.=packString($name);
$string.=pack('N', 0);
$string.=pack('N', 2);
$string.=packString("%s");
$string.=pack('N', length($value));
$string.=packString($value);
sendUDP($string);
}
sub sendUDP
{
my $data=shift;
dumpUDP($data) if $gexDebug & 4;
return if $gexDebug & 8;
my $length=length($data);
for (my $offset=0; $length>0; )
{
# Either send as regular UDP packet(s) OR send to the multicast address
my $bytes=(!$gexMcastFlag) ? send($gexSocket, substr($data, $offset, $gexPktSize), 0, $gexPaddr) :
$gexMcast->mcast_send($data, "$gexHost:$gexPort");
if (!defined($bytes))
{
print "Error: '$!' writing to socket";
last;
}
$offset+=$bytes;
$length-=$bytes;
}
}
sub packString
{
my $string=shift;
my $pad=4-(length($string) % 4);
$pad=0 if $pad==4;
for (my $i=0; $i<$pad; $i++)
{
$string.=pack('c', 0);
}
return($string);
}
sub dumpUDP
{
my $output=shift;
for (my $i=0; $i<length($output); $i++)
{
my $byte=unpack('C', substr($output, $i, 1));
printf "%02x ", $byte;
# print "\n" if $i % 4 == 3;
}
print "\n";
}
sub help
{
my $text=<<EOF;
usage: --export=gexpr,host:port[,options]
where each option is separated by a comma, noting some take args themselves
align align output to whole minute boundary
co only reports changes since last reported value
d=mask debugging options, see beginning of graphite.ph for details
h print this help and exit
g only report 'standard' ganglia variables/names
G report 'standard' names plus any additional collectl data
i=seconds reporting interval, must be multiple of collect's -i
s=subsys only report subsystems, must be a subset of collectl's -s
ttl=num if data hasn't changed for this many intervals, report it
only used with 'co', def=5
avg report average of values since last report
max report maximum value since last report
min report minimal value since last report
tot report total values (as makes sense) since last report
EOF
print $text;
exit(0);
}
1;