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Content Delivery Network (CDN) - optional, for either uploads only or both uploads & extras (rfe 9134)

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This commit is contained in:
Randall Schwartz 2009-05-13 21:12:05 +00:00
parent d6696f8a7e
commit acd3fded45
8 changed files with 646 additions and 11 deletions
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sbin/syncToCdn.pl Normal file
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#-------------------------------------------------------------------
# WebGUI is Copyright 2001-2009 Plain Black Corporation.
#-------------------------------------------------------------------
# Please read the legal notices (docs/legal.txt) and the license
# (docs/license.txt) that came with this distribution before using
# this software.
#-------------------------------------------------------------------
# http://www.plainblack.com info@plainblack.com
#-------------------------------------------------------------------
our $webguiRoot;
BEGIN {
$webguiRoot = "..";
unshift (@INC, $webguiRoot."/lib");
}
use strict;
use Fcntl ':flock';
use Getopt::Long;
use WebGUI::Session;
use WebGUI::Storage;
my $configFile;
my $help;
my $migrate;
my $override;
my $quiet;
GetOptions(
'configFile=s' => \$configFile,
'override' => \$override,
'migrate' => \$migrate,
'quiet' => \$quiet,
);
if ($configFile eq "") {
printHelp();
exit 4;
};
if ($help) {
printHelp();
exit 2;
}
# don't want two copies of this to run simultaneously
unless (flock(DATA, LOCK_EX|LOCK_NB)) {
print "$0 is already running. Exiting.\n";
exit 3;
}
sub printHelp {
print <<STOP;
Usage: perl $0 --configfile=<webguiConfig>
--configFile WebGUI config file.
Options:
--override This utility is designed to be run as
a privileged user on Linux style systems.
If you wish to run this utility without
being the super user, then use this flag,
but note that it may not work as
intended.
--migrate Migrate entirety of uploads directory to CDN.
Ignore the CDN queue and sync everything.
--help Display this help message and exit.
--quiet Disable output unless there's an error.
EXIT STATUS
The following exit values are returned:
0
Successful execution.
1
Only super user may run the script.
2
Help requested.
3
Only one instance of this script can run at a time.
4
Error during invocation of the command.
5
Content Delivery Network (CDN) is not enabled.
STOP
}
if (!($^O =~ /^Win/i) && $> != 0 && !$override) {
print "You must be the super user to use this utility.\n";
exit 1;
}
print "Starting..." unless ($quiet);
my $session = WebGUI::Session->open($webguiRoot,$configFile);
$session->user({userId=>3});
print "OK\n" unless ($quiet);
my $cdnCfg = $session->config->get('cdn');
unless ($cdnCfg and $cdnCfg->{'enabled'} and $cdnCfg->{'queuePath'}) {
print "Content delivery network (CDN) is not enabled in $configFile.\n";
exit 5;
}
# Here is the core of the script
if ($migrate) {
syncUploads($session);
} else {
syncQueue($session, $cdnCfg);
}
print "Cleaning up..." unless ($quiet);
$session->var->end();
$session->close();
print "OK\n" unless ($quiet);
exit 0;
#-----------------------------------------
# syncQueue(session, cdnConfig)
#-----------------------------------------
sub syncQueue {
my $session = shift;
my $cdnCfg = shift;
my $locIter = WebGUI::Storage->getCdnFileIterator($session);
while (my $store = $locIter->()) {
my $ctrlFile = $cdnCfg->{'queuePath'} . '/' . $session->id->toHex($store->getId);
if (-r $ctrlFile and -s $ctrlFile < 12) {
if (! -s $ctrlFile) { # Empty means sync/add/update
$store->syncToCdn;
} else { # expect "deleted" but be careful.
if (open my $ctrlFH, "<$ctrlFile") {
my $directive = <$ctrlFH>;
chomp $directive;
close $ctrlFH;
if ($directive =~ m/^deleted$/i) {
$store->deleteFromCdn;
} # else unknown - ignore
} else {
warn "Cannot read CDN control file $ctrlFile.";
$session->errorHandler->warn("Cannot read CDN control file $ctrlFile.");
}
}
} else { # missing or invalid
print "No recognizable CDN control file $ctrlFile.\n";
}
}
} # end syncQueue
#-----------------------------------------
# syncUploads(session)
#-----------------------------------------
sub syncUploads {
my $session = shift;
# Alternate approach would be touch queue files, then run queue.
my $uDir = $session->config->get('uploadsPath');
if (opendir my $DH, $uDir) {
my @part1 = grep { !/^\.+$/ } readdir($DH);
foreach my $subdir (@part1) {
if (opendir my $SD, "$uDir/$subdir") {
my @part2 = grep { !/^\.+$/ } readdir($SD);
foreach my $sub2 (@part2) {
if (opendir my $S2, "$uDir/$subdir/$sub2") {
my @fileId = grep { !/^\.+$/ } readdir($S2);
foreach my $fileId (@fileId) {
my $store = WebGUI::Storage->get($session,
$session->id->fromHex($fileId));
$store->syncToCdn; # here is the meat
}
close $S2;
} else {
$session->errorHandler->warn("Unable to open $sub2 for directory reading");
}
}
close $SD;
} else {
$session->errorHandler->warn("Unable to open $subdir for directory reading");
}
}
close $DH;
} else {
$session->errorHandler->warn("Unable to open $uDir for directory reading");
}
} # end syncUploads
__DATA__
This exists so flock() code above works.
DO NOT REMOVE THIS DATA SECTION.