1ea195ee01
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@5432 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
703 lines
21 KiB
Perl
703 lines
21 KiB
Perl
#!/usr/bin/perl
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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package xCAT::MsgUtils;
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# if AIX - make sure we include perl 5.8.2 in INC path.
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# Needed to find perl dependencies shipped in deps tarball.
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if ($^O =~ /^aix/i)
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{
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use lib "/usr/opt/perl5/lib/5.8.2/aix-thread-multi";
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use lib "/usr/opt/perl5/lib/5.8.2";
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use lib "/usr/opt/perl5/lib/site_perl/5.8.2/aix-thread-multi";
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use lib "/usr/opt/perl5/lib/site_perl/5.8.2";
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}
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use strict;
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use Sys::Syslog qw (:DEFAULT setlogsock);
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require xCAT::Table;
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#use locale;
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use Socket;
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use File::Path;
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$::NOK = -1;
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$::OK = 0;
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#--------------------------------------------------------------------------------
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=head1 xCAT::MsgUtils
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=head2 Package Description
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This program module file, supports the xcat messaging and logging
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=cut
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#--------------------------------------------------------------------------------
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=head2 Package Dependancies
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use strict;
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use Fcntl qw(:flock);
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use File::Basename;
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use File::Find;
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use File::Path; # Provides mkpath()
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=cut
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#--------------------------------------------------------------------------------
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=head1 Subroutines
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=cut
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=head3 message
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Display a msg STDOUT,STDERR,log a msg and/or return to callback function.
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Arguments:
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The arguments of the message() function are:
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If address of the callback is provided,
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then the message will be returned either
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as data to the client's callback routine or to the
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xcat daemon or Client.pm ( bypass) for display/logging.
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See flags below.
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If address of the callback is not provide, then
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the message will be displayed to STDERR or STDOUT or
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added to SYSLOG. See flags below.
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If logging (L) is requested, the message structure
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must be a simple string. The routine will convert
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it to the appropriate callback structure, if a callback
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is provided.
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Note for logging xCAT:MsgUtils->start_logging and
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xCAT:MstUtils->stop_logging must be used to
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open and close the log.
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For compatibility with existing code, the message routine will
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move the data into the appropriate callback structure, if required.
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See example below, if the input to the message routine
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has the "data" structure filled in for an error message, then
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the message routine will move the $rsp->{data}->[0] to
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$rsp->{error}->[0]. This will allow xcatd/Client.pm will process
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all but "data" messages.
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The current client code should not have to change.
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my %rsp;
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$rsp->{data}->[0] = "Job did not run. \n";
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xCAT::MsgUtils->message("E", $rsp, $::CALLBACK);
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Here the message routine will move $rsp->{data}->[0] to
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$rsp->{error}->[0], to match the "E"message code.
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Note the message
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routine will only check for the data to either exist in
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$rsp->{error}->[0] already, or to exist in $rsp->{data}->[0].
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Here's the meaning of the 1st character, if a callback specified:
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D - DATA this is returned to the client callback routine
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N - Node Data this is returned to the client callback routine
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E - error this is displayed/logged by daemon/Client.pm.
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I - informational this is displayed/logged by daemon/Client.pm.
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S - Message will be logged to syslog ( severe error)
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syslog facily (local4) and priority (err) will be used.
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See /etc/syslog.conf file for the destination of the
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messages.
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Note S can be combined with other flags for example
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SE logs message to syslog to also display the
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message by daemon/ Client.pm.
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V - verbose. This flag is not valid, the calling routine
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should check for verbose mode before calling the message
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routine and only use the I flag for the message.
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If V flag is detected, it will be changed to an I flag.
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W - warning this is displayed/logged by daemon/Client.pm.
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L - Log error to xCAT Log on the local machine.
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Routine must have setup log by calling
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MsgUtils->start_log routine which returns
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$::LOG_FILE_HANDLE. Log is closed with
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MsgUtils->stop_log routine. Note can be combined with
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other flags:
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LS - Log to xCAT Log and Syslog
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LSE/LSI - Log to xCAT Log and Syslog and display
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if this option is used the message must be a simple
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string. The message routine will format for callback
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based on the (D,E,I,W) flag.
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Here's the meaning of the 1st character, if no callback specified:
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D - DATA goes to STDOUT
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E - error. This type of message will be sent to STDERR.
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I - informational goes to STDOUT
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N - Node informational goes to STDOUT
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S - Message will be logged to syslog ( severe error)
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Note S can be combined with other flags for example
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SE logs message to syslog and is sent to STDERR.
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SA logs message to syslog and to the auditlog DB table
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V - verbose. This flag is not valid, the calling routine
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should check for verbose mode before calling the message
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routine and only use the I flag for the message.
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If V flag is detected, it will be changed to an I flag.
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W - warning goes to STDOUT.
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L - log goes to /var/log/xcat/<logname>
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( see MsgUtils->start_log)
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Routine must have setup log by calling
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MsgUtils->start_log routine which returns
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$::LOG_FILE_HANDLE. Log is closed with
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MsgUtils->stop_log routine. Note can be combined with
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other flags:
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LS - Log to xCAT Log and Syslog
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LSE/LSI - Log to xCAT Log and Syslog and display
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Returns:
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none
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Error:
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none
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Example:
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Use with no callback
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# Message to STDOUT
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xCAT::MsgUtils->message('I', "Operation $value1 succeeded\n");
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xCAT::MsgUtils->message('N', "Node:$node failed\n");
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# Message to STDERR
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xCAT::MsgUtils->message('E', "Operation $value1 failed\n");
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# Message to Syslog
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xCAT::MsgUtils->message('S', "Host $host not responding\n");
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# Message to Syslog and auditlog table
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# see tabdump -d auditlog
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my $rsp = {};
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$rsp->{syslogdata}->[0] = "$host not responding\n"; # for syslog
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# the next data is for auditlog table, audittime added below
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$rsp->{userid} ->[0] = $user;
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$rsp->{clientname} -> [0] = $client;
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$rsp->{clienttype} -> [0] = $clienttype;
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$rsp->{command} -> [0] = $command;
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$rsp->{noderange} -> [0] = $noderange;
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$rsp->{args} -> [0] = $arguments;
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$rsp->{status} -> [0] = $status;
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xCAT::MsgUtils->message('SA', $rsp);
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# Message to Log and Syslog
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xCAT::MsgUtils->message('LS', "Host $host not responding\n");
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# Message to Log
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xCAT::MsgUtils->message('L', "Host $host not responding\n");
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Use with callback
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# Message to callback
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my $rsp = {};
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$rsp->{data}->[0] = "Job did not run. \n";
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xCAT::MsgUtils->message("D", $rsp, $::CALLBACK);
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my $rsp = {};
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$rsp->{error}->[0] = "No hosts in node list\n";
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xCAT::MsgUtils->message("E", $rsp, $::CALLBACK);
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my $rsp = {};
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$rsp->{node}->[0]->{name}->[0] ="mynode";
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$rsp->{node}->[0]->{data}->[0] ="mydata";
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xCAT::MsgUtils->message("N", $rsp, $callback);
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my $rsp = {};
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$rsp->{info}->[0] = "No hosts in node list\n";
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xCAT::MsgUtils->message("I", $rsp, $::CALLBACK);
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my $rsp = {};
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$rsp->{warning}->[0] = "No hosts in node list\n";
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xCAT::MsgUtils->message("W", $rsp, $::CALLBACK);
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my $rsp = {};
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$rsp->{error}->[0] = "Host not responding\n";
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xCAT::MsgUtils->message("S", $rsp, $::CALLBACK);
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# Message to Syslog and callback
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my $rsp = {};
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$rsp->{error}->[0] = "Host not responding\n";
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xCAT::MsgUtils->message("SE", $rsp, $::CALLBACK);
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# Message to Syslog and callback
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my $rsp = {};
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$rsp->{info}->[0] = "Host not responding\n";
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xCAT::MsgUtils->message("SI", $rsp, $::CALLBACK);
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# Message to Log, Syslog and callback
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my $msg;
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$msg = "Host not responding\n";
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xCAT::MsgUtils->message("LSI", $msg, $::CALLBACK);
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# Message to Log and callback
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my $msg;
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$msg = "Host not responding\n";
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xCAT::MsgUtils->message("LI", $msg, $::CALLBACK);
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Comments:
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Returns:
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1 for internal error ( invalid input to the routine)
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=cut
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#--------------------------------------------------------------------------------
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sub message
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{
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# Process the arguments
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shift; # get rid of the class name
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my $sev = shift;
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my $rsp = shift;
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my $call_back = shift; # optional
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my $exitcode = shift; # optional
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# should be I, D, E, S, SA ,LS, W , L,N
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# or S(I, D, E, S, W, L,N)
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my $stdouterrf = \*STDOUT;
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my $stdouterrd = '';
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if ($sev =~ /[E]/)
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{
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$stdouterrf = \*STDERR;
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$stdouterrd = '1>&2';
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}
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# check for logging
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my $logging = 0;
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if ($sev =~ /[L]/)
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{
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# no log opened, we have an error
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if (!defined($::LOG_FILE_HANDLE))
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{
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if ($call_back)
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{
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# build callback structure
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my $newrsp;
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my $sevkey = 'error';
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my $err =
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"Logging requested without setting up log by calling xCAT:MsgUtils->start_logging.\n";
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push @{$newrsp->{$sevkey}}, $err;
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push @{$newrsp->{errorcode}}, "1";
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$call_back->($newrsp); # send message to daemon/Client.pm
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return 1;
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}
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else
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{
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print
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"Logging requested without setting up log by calling xCAT:MsgUtils->start_logging.\n";
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return 1;
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}
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}
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else
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{
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$logging = 1;
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}
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}
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if ($sev eq 'V')
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{ # verbose should have been handled in calling routine
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$sev = "I";
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}
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if ($sev eq 'SV')
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{ # verbose should have been handled in calling routine
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$sev = "SI";
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}
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# Check that correct structure is filled in. If the data is not in the
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# structure corresponding to the $sev, then look for it in "data"
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#TODO: this is not really right for a few reasons: 1) all the fields in the
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# response structure are arrays, so can handle multiple lines of text. We
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# should not just be check the 0th element. 2) a cmd may have both error
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# text and data text. 3) this message() function should just take in a plain
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# string and put it in the correct place based on the severity.
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#
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# if a callback routine is provided
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#
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if ($call_back)
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{ # callback routine provided
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my $sevkey;
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if ($sev =~ /D/) { $sevkey = 'data'; }
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elsif ($sev =~ /N/) { $sevkey = 'node'; }
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elsif ($sev =~ /I/) { $sevkey = 'info'; }
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elsif ($sev =~ /W/) { $sevkey = 'warning'; }
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elsif ($sev =~ /E/)
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{
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$sevkey = 'error';
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if (!defined($exitcode))
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{
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$exitcode = 1;
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} # default to something non-zero
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}
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else
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{
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# build callback structure
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my $newrsp;
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my $sevkey = 'error';
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my $err =
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"Invalid or no severity code passed to MsgUtils::message().\n";
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push @{$newrsp->{$sevkey}}, $err;
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push @{$newrsp->{errorcode}}, "1";
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$call_back->($newrsp); # send message to daemon/Client.pm
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return 1;
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}
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# check if logging to xCAT log, must be handled
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# separately because message data is a simple string
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#
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if (!$logging)
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{
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if ($sevkey ne 'data')
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{
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if (!defined($rsp->{$sevkey}) || !scalar(@{$rsp->{$sevkey}}))
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{ # did not pass the text in in the severity-specific field
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# so fix it
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if (defined($rsp->{data}) && scalar(@{$rsp->{data}}))
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{
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push @{$rsp->{$sevkey}}, @{$rsp->{data}};
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# assume they passed
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# in the text in the data field instead
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@{$rsp->{data}} = (); # clear out the data field
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}
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}
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}
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# if still nothing in the array, there is nothing to print out
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if (!defined($rsp->{$sevkey}) || !scalar(@{$rsp->{$sevkey}}))
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{
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return;
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}
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if ($exitcode)
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{
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push @{$rsp->{errorcode}}, $exitcode;
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}
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$call_back->($rsp); # send message to daemon/Client.pm
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@{$rsp->{$sevkey}} =
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(); # clear out the rsp structure in case they use it again
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@{$rsp->{data}} = ();
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@{$rsp->{errorcode}} = ();
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}
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else # logging
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{
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# write to log
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print $::LOG_FILE_HANDLE $rsp;
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# build callback structure
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my $newrsp;
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push @{$newrsp->{$sevkey}}, $rsp;
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if ($exitcode)
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{
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push @{$newrsp->{errorcode}}, $exitcode;
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}
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$call_back->($newrsp); # send message to daemon/Client.pm
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}
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}
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else # no callback provided
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{
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if ($logging)
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{ # print to local xcat log
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print $::LOG_FILE_HANDLE $rsp;
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}
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else
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{ # print to stdout
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print $stdouterrf $rsp . "\n"; # print the message
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}
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}
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# is syslog requested
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my $newrsp;
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if ($sev eq 'SA')
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{ # if SA then need to pull first entry from $rsp
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# for syslog, to preserve old interface
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$newrsp = $rsp;
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$rsp = $newrsp->{syslogdata}->[0];
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}
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if ($sev =~ /S/)
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{
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# If they want this msg to also go to syslog, do that now
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eval {
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openlog("xCAT", '', 'local4');
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setlogsock(["tcp", "unix", "stream"]);
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syslog("err", $rsp);
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closelog();
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};
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my $errstr = $@;
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if ($errstr)
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{
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print $stdouterrf
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"Unable to log $rsp to syslog because of $errstr\n";
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}
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}
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# if write to auditlog table requested, if not on service node
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if (xCAT::Utils->isMN()){
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if ($sev eq 'SA')
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{
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my $auditlogentry;
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my $tab = xCAT::Table->new("auditlog", -create => 1, -autocommit => 0);
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if ($tab)
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{
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my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) =
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localtime(time);
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my $currtime = sprintf("%02d-%02d-%04d %02d:%02d:%02d",
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$mon + 1, $mday, $year + 1900,
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$hour, $min, $sec);
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$auditlogentry->{audittime} = $currtime;
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$auditlogentry->{userid} = $newrsp->{userid}->[0];
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$auditlogentry->{clientname} = $newrsp->{clientname}->[0];
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$auditlogentry->{clienttype} = $newrsp->{clienttype}->[0];
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$auditlogentry->{command} = $newrsp->{command}->[0];
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$auditlogentry->{noderange} = $newrsp->{noderange}->[0];
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$auditlogentry->{args} = $newrsp->{args}->[0];
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$auditlogentry->{status} = $newrsp->{status}->[0];
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my @ret = $tab->setAttribs(undef, $auditlogentry);
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if (@ret > 1)
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{
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print $stdouterrf "Unable to open auditlog\n";
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eval {
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openlog("xCAT", '', 'local4');
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setlogsock(["tcp", "unix", "stream"]);
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syslog("err", "Unable to write to auditlog");
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closelog();
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};
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}
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else
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{
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$tab->commit;
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}
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}
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else
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{ # error
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print $stdouterrf "Unable to open auditlog\n";
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eval {
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openlog("xCAT", '', 'local4');
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setlogsock(["tcp", "unix", "stream"]);
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syslog("err", "Unable to open auditlog");
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closelog();
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};
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}
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}
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}
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return;
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}
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#--------------------------------------------------------------------------------
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=head2 xCAT Logging Routines
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To use xCAT Logging follow the following sample
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my $rc=xCAT::MsgUtils->start_logging("mylogname"); # create/open log
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.
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.
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.
|
|
# Message to Log and callback
|
|
my $msg;
|
|
$msg = "Host not responding\n";
|
|
xCAT::MsgUtils->message("LI", $msg, $::CALLBACK);
|
|
.
|
|
.
|
|
# Message to Log
|
|
my $msg;
|
|
$msg = "Host not responding\n";
|
|
xCAT::MsgUtils->message("L", $msg);
|
|
.
|
|
|
|
my $rc=xCAT::MsgUtils->stop_logging(); # close log
|
|
|
|
|
|
=cut
|
|
|
|
#--------------------------------------------------------------------------------
|
|
|
|
=head3 start_logging
|
|
|
|
Start logging messages to a logfile. Return the log file handle so it
|
|
can be used for updates and to close the file when done logging
|
|
using stop_logging.
|
|
|
|
Arguments:
|
|
$logfilename ( just name, path is by default /var/log/xcat)
|
|
Returns:
|
|
$::LOG_FILE_HANDLE
|
|
Globals:
|
|
$::LOG_FILE_HANDLE
|
|
Error:
|
|
$::NOK
|
|
Example:
|
|
xCAT:Utils->start_logging("logname");
|
|
|
|
=cut
|
|
|
|
#--------------------------------------------------------------------------------
|
|
|
|
sub start_logging
|
|
{
|
|
my ($class, $logfilename) = @_;
|
|
my ($cmd, $rc);
|
|
my $xCATLogDir = "/var/log/xcat/";
|
|
|
|
my $logfile = $xCATLogDir;
|
|
$logfile .= $logfilename;
|
|
xCAT::MsgUtils->backup_logfile($logfile);
|
|
|
|
# create the log directory if it's not already there
|
|
if (!-d $xCATLogDir)
|
|
{
|
|
$cmd = "mkdir -m 644 -p $xCATLogDir";
|
|
$rc = system("$cmd");
|
|
if ($rc >> 8)
|
|
{
|
|
xCAT::MsgUtils->message('SE', "Error running $cmd.\n");
|
|
return ($::NOK);
|
|
}
|
|
}
|
|
|
|
# open the log file
|
|
unless (open(LOGFILE, ">>$logfile"))
|
|
{
|
|
|
|
# Cannot open file
|
|
xCAT::MsgUtils->message('SE', "Error opening $logfile.\n");
|
|
return ($::NOK);
|
|
}
|
|
|
|
$::LOG_FILE_HANDLE = \*LOGFILE;
|
|
$::LOG_FILE_NAME = $logfile;
|
|
|
|
# Print the program name and date to the top of the logfile
|
|
my $sdate = `/bin/date`;
|
|
chomp $sdate;
|
|
my $program = $0;
|
|
xCAT::MsgUtils->message('L', "$program:logging started $sdate.\n");
|
|
|
|
return ($::LOG_FILE_HANDLE);
|
|
}
|
|
|
|
#--------------------------------------------------------------------------------
|
|
|
|
=head3 stop_logging
|
|
|
|
Turn off message logging. Routine expects to have a file handle
|
|
passed in via the global $::LOG_FILE_HANDLE.
|
|
|
|
Arguments:
|
|
|
|
Returns:
|
|
$::OK
|
|
Globals:
|
|
$::LOG_FILE_HANDLE
|
|
Error:
|
|
none
|
|
Example:
|
|
MsgUtils->stop_logging();
|
|
Comments:
|
|
closes the logfile and undefines $::LOG_FILE_HANDLE
|
|
even on error.
|
|
|
|
=cut
|
|
|
|
#--------------------------------------------------------------------------------
|
|
|
|
sub stop_logging
|
|
{
|
|
my ($class) = @_;
|
|
if (defined($::LOG_FILE_HANDLE))
|
|
{
|
|
|
|
# Print the date at the bottom of the logfile
|
|
my $sdate = `/bin/date`;
|
|
chomp $sdate;
|
|
my $program = $0;
|
|
xCAT::MsgUtils->message('L', "$program:logging stopped $sdate.\n");
|
|
|
|
close($::LOG_FILE_HANDLE);
|
|
undef $::LOG_FILE_HANDLE;
|
|
}
|
|
return $::OK;
|
|
}
|
|
|
|
#--------------------------------------------------------------------------------
|
|
|
|
=head3 backup_logfile
|
|
|
|
Backup the current logfile. Move logfile to logfile.1.
|
|
Shift all other logfiles
|
|
(logfile.[1-3]) up one number. The original logfile.4 is removed as in a FIFO.
|
|
|
|
Arguments:
|
|
$logfile ( full path)
|
|
Returns:
|
|
$::OK
|
|
Error:
|
|
undefined
|
|
Example:
|
|
xCAT::MsgUtils->backup_logfile($logfile);
|
|
|
|
=cut
|
|
|
|
#--------------------------------------------------------------------------------
|
|
|
|
sub backup_logfile
|
|
{
|
|
my ($class, $logfile) = @_;
|
|
|
|
my ($logfile1) = $logfile . ".1";
|
|
my ($logfile2) = $logfile . ".2";
|
|
my ($logfile3) = $logfile . ".3";
|
|
my ($logfile4) = $logfile . ".4";
|
|
|
|
if (-f $logfile)
|
|
{
|
|
rename($logfile3, $logfile4) if (-f $logfile3);
|
|
rename($logfile2, $logfile3) if (-f $logfile2);
|
|
rename($logfile1, $logfile2) if (-f $logfile1);
|
|
rename($logfile, $logfile1);
|
|
}
|
|
return $::OK;
|
|
}
|
|
|
|
1;
|
|
|