head	1.3;
access;
symbols
	TIGRIS_710_FF:1.2
	TIGRIS_706:1.2
	TIGRIS_SEP_13_2000:1.2.0.2
	TIGRIS_705:1.2
	TIGRIS_704:1.2
	TIGRIS_703:1.2
	TIGRIS_702:1.2
	TIGRIS_701:1.2
	TIGRIS_BASELINE:1.2
	BUGZILLA_2_10_STOCK:1.1;
locks; strict;
comment	@# @;


1.3
date	2000.11.16.20.16.58;	author edk;	state dead;
branches;
next	1.2;

1.2
date	2000.09.01.19.30.53;	author kmaples;	state Exp;
branches;
next	1.1;

1.1
date	2000.09.01.19.07.18;	author kmaples;	state Exp;
branches;
next	;


desc
@@


1.3
log
@remove files which are no longer in use from the head of the tree
@
text
@#!/usr/bin/perl -w
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Terry Weissman <terry@@mozilla.org>
#                 David Gardiner <david.gardiner@@unisa.edu.au>

use diagnostics;
use strict;

require "globals.pl";
require "defparams.pl";

# Shut up misguided -w warnings about "used only once".  "use vars" just
# doesn't work for me.

sub sillyness {
    my $zz;
    $zz = $::db;
    $zz = $::dbwritesallowed;
}

my $verbose = 0;
my $syncall = 0;

sub Usage {
    print "Usage: syncshadowdb [-v] [-syncall]\n";
    exit;
}

foreach my $opt (@@ARGV) {
    if ($opt eq '-v') {
        $verbose = 1;
    } elsif ($opt eq '-syncall') {
        $syncall = 1;
        $verbose = 1;
    } else {
        Usage();
    }
}
$| = 1;

my $logtostderr = 0;

sub Verbose ($) {
    my ($str) = (@@_);
    if ($verbose) {
        if ($logtostderr) {
            print STDERR $str, "\n";
        } else {
            print $str, "\n";
        }
    }
}
    
my $db_name = "bugs";
require "localconfig";

if (!Param("shadowdb")) {
    Verbose("We don't have shadow databases turned on; no syncing performed.");
    exit;
}

my $wasusing = Param("queryagainstshadowdb");

$::param{'queryagainstshadowdb'} = 1; # Force us to be able to use the
                                      # shadowdb, even if other processes
                                      # are not supposed to.


ConnectToDatabase(1);

Verbose("Aquiring lock.");
SendSQL("SELECT GET_LOCK('synclock', 1)");
if (!FetchOneColumn()) {
    Verbose("Couldn't get the lock to do the shadow database syncing.");
    exit;
}

my $shadowtable = "$db_name.shadowlog";

if (!$syncall) {
    Verbose("Looking for requests to sync the whole database.");
    SendSQL("SELECT id FROM $shadowtable " .
            "WHERE reflected = 0 AND command = 'SYNCUP'");
    if (FetchOneColumn()) {
        $syncall = 1;
    }
}

if ($syncall) {
    Verbose("Syncing up the shadow database by copying entire database in.");
    if ($wasusing) {
        $::param{'queryagainstshadowdb'} = 0;
        WriteParams();
        Verbose("Disabled reading from the shadowdb. Sleeping 10 seconds to let other procs catch up.");
        sleep(10);
        $::param{'queryagainstshadowdb'} = 1;
    }
    my @@tables;
    SendSQL("SHOW TABLES");
    my $query = "";
    while (MoreSQLData()) {
        my $table = FetchOneColumn();
        push(@@tables, $table);
        if ($query) {
            $query .= ", $table WRITE";
        } else {
            $query = "LOCK TABLES $table WRITE";
        }
    }
    if (@@tables) {
        Verbose("Locking entire shadow database");
        SendSQL($query);
        foreach my $table (@@tables) {
            Verbose("Dropping old shadow table $table");
            SendSQL("DROP TABLE $table");
        }
        SendSQL("UNLOCK TABLES");
    }    
    # Carefully lock the whole real database for reading, except for the
    # shadowlog table, which we lock for writing.  Then dump everything
    # into the shadowdb database.  Then mark everything in the shadowlog
    # as reflected.  Only then unlock everything.  This sequence causes
    # us to be sure not to miss anything or get something twice.
    SendSQL("USE $db_name");
    SendSQL("SHOW TABLES");
    @@tables = ();
    $query = "LOCK TABLES shadowlog WRITE";
    while (MoreSQLData()) {
        my $table = FetchOneColumn();
        if ($table ne "shadowlog") {
            $query .= ", $table READ";
            push(@@tables, $table);
        }
    }
    Verbose("Locking entire database");
    SendSQL($query);
    my $tablelist = join(' ', @@tables);
    my $tempfile = "data/tmpsyncshadow.$$";
    Verbose("Dumping database to a temp file ($tempfile).");
    system("mysqldump -l -e $db_name $tablelist > $tempfile");
    Verbose("Restoring from tempfile into shadowdb");
    my $extra = "";
    if ($verbose) {
        $extra = "-v";
    }
    open(MYSQL, "cat $tempfile | mysql $extra " .
         Param("shadowdb") . "|") || die "Couldn't do db copy";
    my $count = 0;
    while (<MYSQL>) {
        print ".";
        $count++;
        if ($count % 70 == 0) {
            print "\n";
        }
    }
    close(MYSQL);
    unlink($tempfile);
    Verbose("");
    
    
    $::dbwritesallowed = 1;
#    SendSQL("UPDATE shadowlog SET reflected = 1 WHERE reflected = 0", 1);
    SendSQL("DELETE FROM shadowlog", 1);
    SendSQL("UNLOCK TABLES");
    if ($wasusing) {
        Verbose("Reenabling other processes to read from the shadow db");
        $::param{'queryagainstshadowdb'} = 1;
        WriteParams();
    }
    Verbose("OK, done.");
}

Verbose("Looking for commands to execute.");
$::dbwritesallowed = 1;

# Make us low priority, to not block anyone who is trying to actually use
# the shadowdb.  Note that this is carefully coded to ignore errors; we want
# to keep going even on older mysqld's that don't have the
# SQL_LOW_PRIORITY_UPDATES option.
$::db->query("SET OPTION SQL_LOW_PRIORITY_UPDATES = 1"); 

while (1) {
    SendSQL("SELECT id, command FROM $shadowtable WHERE reflected = 0 " .
            "ORDER BY id LIMIT 1");
    my ($id, $command) = (FetchSQLData());
    if (!$id) {
        last;
    }
    Verbose("Executing command in shadow db: $command");
    SendSQL($command, 1);
    SendSQL("UPDATE $shadowtable SET reflected = 1 WHERE id = $id", 1);
}

Verbose("Releasing lock.");
SendSQL("SELECT RELEASE_LOCK('synclock')");
@


1.2
log
@Fixed calls to perl
@
text
@@


1.1
log
@Initial checking of bugzilla 2.10, straight from mozilla.org.  Note that
this version WILL NOT WORK AT ALL in our environment for all sorts of
reasons - in simply represents the introduction of 2.10 into our cvs tree
subsequent to the deprication of the 2.6 version which we had been using.

Note that some files and directories have been retained from the prior
version in our repository; those are
	data/
	shadow/
	20bug-track.conf.in
	Makefile
	Makefile.config
the only one of thes which actually contains legacy information relevant to
bugzilla should be the data/ directory, which contains a generated params
file which needs to be upgraded/replaced.  Note that none of the items listed
is part of mozilla.org's 2.10 tar - they are either generated by bugzilla
(such as the data/ and shadow/ dirs), or are related to our sandboxing and
installation methodology.
@
text
@d1 1
a1 1
#!/usr/bonsaitools/bin/perl -w
@

