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Fixed many problems in sending messages #4

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Fixed many problems in sending messages #4

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9f1cbc1
Fixed many problems in sending messages
Nov 2, 2012
3900b75
cleaned up handling of product name (conflicting use of the variable …
Nov 5, 2012
85ed72d
added a check to avoid dieing if a file that we are told to monitor d…
Nov 5, 2012
f775b8b
fixed status line
Nov 5, 2012
8c0a3c2
the recent changes dropped the filename from the log, this adds it back
Nov 6, 2012
47ac343
a better solution to the problem of files going away, File::Tail has …
Nov 7, 2012
e26b05c
add a check so that if a pending line is > 64K, send the data we have…
Nov 7, 2012
64b0493
added signal handler for USR1 that dumps all known variables to /var/…
Nov 9, 2012
0b4dd8a
added GetOptLong processing so that things that were hard-coded can n…
Nov 10, 2012
cb52924
created logpipe, a varient of loglog that reads from stdin and output…
Nov 10, 2012
1504f47
fix hsndling of long messages. before the program would spin and eat …
davidelang Nov 10, 2012
ffe78f2
changed a lot of prior debug prints from being commented out to being…
davidelang Nov 10, 2012
9e8cb68
modified sendlog to take hostname field and modified config file to h…
Nov 14, 2012
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265 changes: 211 additions & 54 deletions loglog
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Original file line number Diff line number Diff line change
Expand Up @@ -5,25 +5,143 @@ use Time::localtime;
use vars qw($VERSION);
use IO::Socket;
use Sys::Hostname;
use Data::Dumper;
use Getopt::Long;
$|=1;
# Note that Proc::Daemon, and File::Tail are included inline.
$host = `hostname -s`; chomp($host);

# much of Net::Syslog has been copied. It's not used directly to allow logging with different programnames and to streamline dealing with long logs (re-coding send allows that routine to deal with long logs instead of needing the code in multiple places).


GetOptions("debug:i" => \$debug,
"file=s" => \$conf,
"help" => \$help,
"maxloglength=i" => \$maxloglength,
"port=s" => \$SyslogPort,
"priorty=s" => \$priority,
"facility=s" => \$Facility,
"server=s" => \$SyslogHost);

if (!$debug) {$debug = 0;}
if (!$SyslogHost) {$SyslogHost = 'scribe';}
if (!$Facility) {$Facility = 'local6';}
if (!$priority) {$priority = 'info';}
if (!$SyslogPort) {$SyslogPort = 514,}
if (!$maxloglength) {$maxloglength = 4000;}
if (!$conf) {$conf = "/opt/disys/etc/loglog/$host.conf";}
if ($help) {
print STDERR "usage info\n";
print STDERR " --help dump this info\n";
print STDERR " --file=config file name\n";
print STDERR " --maxloglength=#\n";
print STDERR " --server=syslogserver\n";
print STDERR " --port=syslogport\n";
print STDERR " --priority=syslog priority\n";
print STDERR " --facility=syslog facility\n";
print STDERR " --debug=#\n";
print STDERR " debug flags are a bitmask, turn on the bits for the debug features you want\n";
print STDERR " 1 basic flow control\n";
print STDERR " 2 sendlog splitting of log messages\n";
print STDERR " 4 sendlog sending of log messages\n";
print STDERR " 256 File::Tail internal debugging\n";
exit;
}
$already_alive = `ps -ef | grep loglog | grep -v grep` + 0;
if ($already_alive) {
# print STDERR "Already running\n";
if ($debug & 1) { print STDERR "Already running\n"; }
exit;
}

$loglogname = File::Spec->rel2abs($0);
$mytimestamp = ctime(stat($loglogname)->mtime);
$debug=0;

Proc::Daemon::Init;
my $continue = 1;
$SIG{TERM} = sub { $continue = 0 };
$SIG{USR1} = sub {
open(DUMPFILE, ">/var/tmp/loglog.dump") or die "unable to write loglog dump file\n";
print DUMPFILE "already_alive\n";
print DUMPFILE Dumper(\$already_alive);
print DUMPFILE "conf\n";
print DUMPFILE Dumper(\$conf);
print DUMPFILE "continue\n";
print DUMPFILE Dumper(\$continue);
print DUMPFILE "d\n";
print DUMPFILE Dumper(\$d);
print DUMPFILE "debug\n";
print DUMPFILE Dumper(\$debug);
print DUMPFILE "Facility\n";
print DUMPFILE Dumper(\$Facility);
print DUMPFILE "facility_i\n";
print DUMPFILE Dumper(\$facility_i);
print DUMPFILE "filename\n";
print DUMPFILE Dumper(\$filename);
print DUMPFILE "files\n";
print DUMPFILE Dumper(\@files);
print DUMPFILE "host\n";
print DUMPFILE Dumper(\$host);
print DUMPFILE "interval\n";
print DUMPFILE Dumper(\$interval);
print DUMPFILE "loglogname\n";
print DUMPFILE Dumper(\$loglogname);
print DUMPFILE "maxloglength\n";
print DUMPFILE Dumper(\$maxloglength);
print DUMPFILE "message\n";
print DUMPFILE Dumper(\$message);
print DUMPFILE "messagelength\n";
print DUMPFILE Dumper(\$messagelength);
print DUMPFILE "messages\n";
print DUMPFILE Dumper(\@messages);
print DUMPFILE "month\n";
print DUMPFILE Dumper(\@month);
print DUMPFILE "msg\n";
print DUMPFILE Dumper(\$msg);
print DUMPFILE "mynewtimestamp\n";
print DUMPFILE Dumper(\$mynewtimestamp);
print DUMPFILE "mytimestamp\n";
print DUMPFILE Dumper(\$mytimestamp);
print DUMPFILE "name\n";
print DUMPFILE Dumper(\$name);
print DUMPFILE "names\n";
print DUMPFILE Dumper(\@names);
print DUMPFILE "nfound\n";
print DUMPFILE Dumper(\$nfound);
print DUMPFILE "pending\n";
print DUMPFILE Dumper(\@pending);
print DUMPFILE "pid\n";
print DUMPFILE Dumper(\$pid);
print DUMPFILE "priority\n";
print DUMPFILE Dumper(\$priority);
print DUMPFILE "priority_i\n";
print DUMPFILE Dumper(\$priority_i);
print DUMPFILE "product\n";
print DUMPFILE Dumper(\$product);
print DUMPFILE "rin\n";
print DUMPFILE Dumper(\$rin);
print DUMPFILE "sent\n";
print DUMPFILE Dumper(\$sent);
print DUMPFILE "sentbytes\n";
print DUMPFILE Dumper(\$sentbytes);
print DUMPFILE "sock\n";
print DUMPFILE Dumper(\$sock);
print DUMPFILE "syslog_facilities\n";
print DUMPFILE Dumper(\%syslog_facilities);
print DUMPFILE "SyslogHost\n";
print DUMPFILE Dumper(\$SyslogHost);
print DUMPFILE "SyslogPort\n";
print DUMPFILE Dumper(\$SyslogPort);
print DUMPFILE "syslog_priorities\n";
print DUMPFILE Dumper(\%syslog_priorities);
print DUMPFILE "t\n";
print DUMPFILE Dumper(\$t);
print DUMPFILE "thisfiletail\n";
print DUMPFILE Dumper(\$thisfiletail);
print DUMPFILE "time\n";
print DUMPFILE Dumper(\@time);
print DUMPFILE "timestamp\n";
print DUMPFILE Dumper(\$timestamp);
print DUMPFILE "ts\n";
print DUMPFILE Dumper(\$ts);
close(DUMPFILE);
};

my %syslog_priorities = (
emerg => 0,
Expand Down Expand Up @@ -75,91 +193,110 @@ my %syslog_facilities = (
);

my @month = qw{Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec};
$SyslogHost = 'scribe';
$Facility = 'local6';
$priority = 'info';
$pid = $$,
$SyslogPort = 514,
$maxloglength = 4000;
$host = `hostname -s`; chomp($host);
$conf = "/opt/disys/etc/loglog/$host.conf";
# print "config is $conf\n";
$pid = $$;
if ($debug & 1) { print "config is $conf\n"; }

#these three arrays are tied together, element X of each array correspond to each other.
@files=();
@names=();
@pending=();
@hostnames=();

my $timestamp = localtime(time);
sendlog("status","Startup (program timestamp is $mytimestamp)");
sendlog("status",$host,"Startup (program timestamp is $mytimestamp)");

if (! -e $conf) {
sendlog("$host loglog $timestamp Creating default logfile list");
sendlog("status",$host,"Creating default logfile list");
open (C, ">$conf");
open (I, "find -L /opt/jboss -type f -mtime -1 -name '*.log' -print | grep -v 2012 |");
while (<I>) {
print C "$_ unknown";
print C "$_ unknown $host";
}
close I;
open (I, "find -L /opt/mule -type f -mtime -1 -name '*.log' -print | grep -v 2012 |");
while (<I>) {
print C "$_ unknown";
print C "$_ unknown $host";
}
close I;
open (I, "find -L /opt/di/system/jboss -type f -mtime -1 -name '*.log' -print | grep -v 2012 |");
while (<I>) {
print C "$_ unknown";
print C "$_ unknown $host";
}
close I;
close C;
}

open (I, $conf);
while (<I>) {
chomp;
($filename,$product) = split(" ",$_);
push(@files, [File::Tail->new(name=>"$filename",debug=>$debug),$product]);
chomp;
($filename,$product,$sendhost) = split(" ",$_);
if ($product eq '') {$product = "unknown";}
if ($sendhost eq '') {$product = $host;}
push(@files, File::Tail->new(name=>"$filename",debug=>($debug &256),ignore_nonexistant=>TRUE));
push(@names, $product);
push(@hostnames, $sendhost);
}
close I;

my $rin='';
$interval = 5 * 60; # 5 minutes
$sent=0; $sentbytes=0; $sentmaxlength=0; $nextreport += $interval;
sendlog("status","finished init, configured to watch ".($#files+1)." logfiles, starting processing of logs");
$sent=0; $sentbytes=0; $sentmaxlength=0; $nextreport = time + $interval;
sendlog("status",$host,"finished init, configured to watch ".($#files+1)." logfiles, starting processing of logs");

while ($continue) {
$nfound=File::Tail::select(undef,undef,undef,60,@files);
unless ($nfound) {
my @ints;
foreach(@files) {
push(@ints,$_[0]->interval);
push(@ints,$_->interval);
}
}
foreach (@files) {
if ($_[0]->predict == 0) {
my $t = $_[0]->read; chomp($t);
my $name = $_[0]->{"input"};
if ($t =~ /^\s/ ) {
for($i=0; $i<=$#files; $i++) {
if ($debug & 1 ){ print "$i $names[$i]\n"; }
if ($debug & 1 ){ print " ".time."\n"; }
$thisfiletail = $files[$i];
$filename = $thisfiletail->{"input"};
$product = $names[$i];
if ($thisfiletail->predict == 0) {
my $t = $thisfiletail->read; chomp($t);
if ($debug & 1 ){ print " $t\n";}
my $name = $thisfiletail->{"input"};
if ($t =~ /^\s/ || length($pending[$i]) > 65535) {
# the line starts with whitespace, assume it's a continuation of the prior line
# append it to the prior line, include a separator to indicate that we have done so
$_[0]->pending .= " #015 ".$t;
# if the line is longer than 64K, send what we have anyway.
$pending[$i] .= " #015 ".$t;
} else {
# if there is a prior line send it
if ($_[0]->pending ne "") {
$filename = $_[0]->{"input"};
$product = $_[1] || "unknown";
sendlog($product, $_[0]->pending);
if ($pending[$i] ne "") {
sendlog($product,$hostnames[$i], $filename.': '.$pending[$i]);
$sent++;
$sentbytes += length($t);
if (lenth($t) > $sentmaxlength) { $sentmaxlength = length($t); }
$sentbytes += length($pending[$i]);
if (length($pending[$i]) > $sentmaxlength) { $sentmaxlength = length($pending[$i]); }
}
# replace the prior buffer (if any) with the new data
$_[0]->pending =$t;
$pending[$i] =$t;
}
} elsif ($pending[$i] ne "") {
# if there is no new information, send anything that's pending anyway.
# without this the last line of a log will never get sent.
# With this it waits one timeout, then gets sent.

sendlog($product,$hostnames[$i], $filename.': '.$pending[$i]);
$sent++;
$sentbytes += length($pending[$i]);
if (length($pending[$i]) > $sentmaxlength) { $sentmaxlength = length($pending[$i]); }
$pending[$i] ='';
}

}
if (time > $nextreport) {
sendlog("$host loglog-status sent lines=$sent bytes=$sentbytes maxlength=$sentmaxlength");
sendlog("status",$host,"sent lines=$sent bytes=$sentbytes maxlength=$sentmaxlength");
$sent=0; $sentbytes=0; $sentmaxlength=0; $nextreport += $interval;
}
$mynewtimestamp = ctime(stat($loglogname)->mtime);
if ($mynewtimestamp ne $mytimestamp) { # Modified! die, and watchdog will restart
sendlog("status", "program updated, aborting");
sendlog("status", $host,"program updated, aborting");
exit;
}
}
Expand All @@ -170,8 +307,10 @@ sub sendlog {
PeerPort => $SyslogPort,
Proto => 'udp'
) or die "Socket could not be created : $!\n";
my $name = shift;
my $msg = shift;
my $product = shift;
my $sendhost = shift;
my $msg = shift || "NO MESSAGE";
if ($debug &1) {print "sending log for $product $msg\n";}

my $facility_i = $syslog_facilities{ $Facility } || 21;
my $priority_i = $syslog_priorities{ $Priority } || 7;
Expand All @@ -188,19 +327,43 @@ sub sendlog {

while (length($msg) > $maxloglength) {
$messagelength = rindex $msg, " ", $maxloglength ; #find the position of the last space before position $maxloglenth
$offset=1;
if ($messagelength == -1) {
if ($debug &2) {print "trying splitting on tab\n";}
$messagelength = rindex $msg, "\t", $maxloglength ; #find the position of the last tab before position $maxloglenth
$offset=1;
}
if ($messagelength == -1) {
if ($debug &2) {print "trying splitting on #015\n";}
$messagelength = rindex $msg, "#015", $maxloglength ; #find the position of the last escaped newline before position $maxloglenth
$offset=4;
}
if ($messagelength == -1) {
if ($debug &2) {print "giving up splitting at $maxloglength\n";}
$messagelength = $maxloglength; #if all else fails, just trim the log at the max size, no matter where in the message it is.
$offset=0;
}
push @messages, substr($msg, 0, $messagelength);
$msg = substr($msg, $messagelength); # skip the space
if ($debug &2) {print "splitting message ",($messagelength+1)," offset $offset, ",($#messages+1)," part, last part: $messages[-1]\n";}
$msg = substr($msg, $messagelength +$offset); # skip the thing we are splitting on
}
if ($debug &2) {print "message $msg\n";}
push @messages, $msg;
if ($#messages = 1) {
$message = "<$d>$ts $host loglog-${name}[$pid]: $messages[0]";
if ($debug & 4) {print $#messages, " parts in this message\n";}
if ($#messages == 0) {
$message = "<$d>$ts $sendhost loglog-${product}[$pid]: $messages[0]";
if ($debug &4) {print "sending single",$message,"\n";}
print $sock $message;
} else {
for ($i=0; $i<$#message; $i++){
$message = "<$d>$ts $host loglog-${name}[$pid]: ($i/$#messages): $messages[$i]";
if ($debug &4) {print "multipart message $j $#messages\n";}
for ($j=0; $j<=$#messages; $j++){
$message = "<$d>$ts $sendhost loglog-${product}[$pid]: (".($j+1).'/'.($#messages+1)."): $messages[$j]";
if ($debug &4) {print "sending multipart $j ",$message,"\n";}
print $sock $message;
}
if ($debug &4) {print "finished multipart message\n";}
}
@messages=();
$sock->close();
}

Expand Down Expand Up @@ -244,13 +407,7 @@ sub interval {
sub logit {
my $object=shift;
my @call=caller(1);
print # STDERR
# time()." ".
"\033[7m".
$call[3]." ".$object->{"input"}." ".join("",@_).
"\033[0m".
"\n"
if $object->debug;
print STDERR time()." ". "\033[7m". $call[3]." ".$object->{"input"}." ".join("",@_). "\033[0m". "\n" if $object->debug;
}

sub adjustafter {
Expand Down
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