# Copyright (c) 2009 Symbian Foundation Ltd

# This component and the accompanying materials are made available

# under the terms of the License "Eclipse Public License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

# Initial Contributors:

# Symbian Foundation Ltd - initial contribution.

#

# Contributors:

#

# Description:

# This is a helper script which allocates unique drive letter and build number

# then starts a package build by running FBF bootstrap and build targets

use strict;

use Getopt::Long;

use File::Path;

my $sBOOTSTRAP_DIR="C:\\Apps\\FBF\\bootstrap";

my $sJOB_BASE_DIR="D:\\fbf_project";

my $nMAX_JOBDIR_AGE_SECONDS = 86400; # max number of seconds after which the letter is forcibly released

my $nLOCK_FILE_MAX_ATTEMPTS = 5;

my $sNUMBERS_FILE="\\\\bishare\\SF_builds\\numbers.txt";

my $sLETTERS_FILE="D:\\letters.txt";

my $nMAX_LETTER_AGE_SECONDS = 86400; # max number of seconds after which the letter is forcibly released

my $sFbfProjectRepo = '';

my $sFbfProjectDir = '';

my $sFbfConfigRepo="\\\\bishare\\mercurial_internal\\fbf\\configs\\pkgbuild";

my $sFbfConfigDir = '';

my $nCmdLineNumber;

my $bTestBuild = 0;

GetOptions((

	'configrepo:s' => \$sFbfConfigRepo,

	'configdir:s' => \$sFbfConfigDir,

	'projectrepo:s' => \$sFbfProjectRepo,

	'projectdir:s' => \$sFbfProjectDir,

	'number:s' => \$nCmdLineNumber,

	'testbuild!' => \$bTestBuild

));

if (!$sFbfProjectRepo and !$sFbfProjectDir)

{

	print "Usage: build_package.pl --projectrepo=REPO [OPTIONS]\n";

	print "where OPTIONS are:\n";

	print "\t--projectrepo=REPO[#REV] Use repository REPO at revision REV for the project.\n";

	print "\t--projectdir=DIR Use DIR location for the project (exclusive with --projectrepo). Option --testbuild is required.\n";

	print "\t--configrepo=REPO[#REV] Use repository REPO at revision REV for the config (instead of \\\\bishare\\mercurial_internal\\fbf\\config\\pkgbuild)\n";

	print "\t--configdir=DIR Use DIR location for the config (exclusive with --configrepo). Option --testbuild is required.\n";

	print "\t--number=N Force build number to N\n";

	print "\t--testbuild Use d:\\numbers_test.txt for numbers and disable publishing\n";

	exit(0);

}

if ($sFbfProjectDir and !$bTestBuild)

{

	print "Error: Option --projectdir requires --testbuild\n";

	exit(0);

}

if ($sFbfConfigDir and !$bTestBuild)

{

	print "Error: Option --configdir requires --testbuild\n";

	exit(0);

}

my $sFbfProjectRev = '';

if ($sFbfProjectRepo =~ m,(.*)#(.*),)

{

	$sFbfProjectRepo = $1;

	$sFbfProjectRev = $2;

}

my $sFbfConfigRev = '';

if ($sFbfConfigRepo =~ m,(.*)#(.*),)

{

	$sFbfConfigRepo = $1;

	$sFbfConfigRev = $2;

}

my $sTestBuildOpts = "";

$sTestBuildOpts = "-Dsf.spec.publish.enable=false" if ( $bTestBuild );

$sNUMBERS_FILE = "d:\\numbers_test.txt" if ( $bTestBuild );

my $sLabelBaseString = $sFbfProjectRepo;

$sLabelBaseString = $sFbfProjectDir if ($sFbfProjectDir);

$sLabelBaseString =~ m,.*[\\/]([^\\^/]+),;

my $sJobLabel = $1;

$sJobLabel = $sLabelBaseString if (! $1);

mkdir($sJOB_BASE_DIR) if (!-d$sJOB_BASE_DIR);

my $sJobDir = mkdir_unique("$sJOB_BASE_DIR\\$sJobLabel");

print "Created project dir $sJOB_BASE_DIR\\$sJobLabel\n";

print("cd $sBOOTSTRAP_DIR\n");

chdir("$sBOOTSTRAP_DIR");

print "###### BOOTSTRAP ######\n";

my $sConfigArg = "-Dsf.config.repo=$sFbfConfigRepo";

$sConfigArg .= " -Dsf.config.rev=$sFbfConfigRev" if ($sFbfConfigRev);

$sConfigArg = "-Dsf.config.dir=$sFbfConfigDir" if ($sFbfConfigDir);

my $sProjectArg = "-Dsf.project.repo=$sFbfProjectRepo";

$sProjectArg .= " -Dsf.project.rev=$sFbfProjectRev" if ($sFbfProjectRev);

$sProjectArg = "-Dsf.project.dir=$sFbfProjectDir" if ($sFbfProjectDir);

print("hlm -f bootstrap.xml $sConfigArg $sProjectArg -Dsf.target.dir=$sJobDir\n");

system("hlm -f bootstrap.xml $sConfigArg $sProjectArg -Dsf.target.dir=$sJobDir");

# check that $sNUMBERS_FILE exists, otherwise create it

if (!-f $sNUMBERS_FILE)

{

	open FILE, ">$sNUMBERS_FILE";

	print FILE "\n";

	close FILE;

}

my $nUnformattedNumber = 0;

if ($nCmdLineNumber)

{

	$nUnformattedNumber = $nCmdLineNumber;

}

elsif ($sFbfProjectRepo)

{

	my $sRevZeroHash = get_rev_zero_hash($sFbfProjectRepo);

	$nUnformattedNumber = get_job_number($sRevZeroHash);

}

my $nJobNumber = sprintf("%.3d", $nUnformattedNumber);

# check that $sLETTERS_FILE exists, otherwise create it

if (!-f $sLETTERS_FILE)

{

	open FILE, ">$sLETTERS_FILE";

	print FILE "\n";

	close FILE;

}

# acquire drive letter

my $sDriveLetter = acquire_drive_letter();

print "acquired drive letter: $sDriveLetter\n";

die "Could not acquire drive letter" if (! $sDriveLetter);

print("cd $sJobDir\\sf-config\n");

chdir("$sJobDir\\sf-config");

print "###### BUILD PREPARATION ######\n";

print("hlm sf-prep -Dsf.spec.job.number=$nJobNumber -Dsf.spec.job.drive=$sDriveLetter: $sTestBuildOpts\n");

system("hlm sf-prep -Dsf.spec.job.number=$nJobNumber -Dsf.spec.job.drive=$sDriveLetter: $sTestBuildOpts");

print "###### EXECUTE BUILD ######\n";

# release the drive letter

release_drive_letter($sDriveLetter);

system("subst $sDriveLetter: /d"); # this is not required, but it's a good idea to keep things in order

print "drive letter $sDriveLetter released (and drive unsubsted)\n";

sub mkdir_unique

{

	my ($sBaseDir) = @_;

	# check that the path where the new dir must be created exists.

	$sBaseDir =~ m,(.*[\\/])?(.*),;

	mkpath($1) if ($1 && !-d $1);

	my $nI = 0;

	my $sNewDirName = "$sBaseDir";

	while(!mkdir($sNewDirName))

	{

		$nI++;

		$sNewDirName = "$sBaseDir.$nI";

	}

	return $sNewDirName;

}

sub get_rev_zero_hash

{

	my ($sFbfProjectRepo) = @_;

	my $sOutput = `hg -R $sFbfProjectRepo identify -r0`;

	# remove leading and trailing spaces

	$sOutput =~ s,^\s+,,;

	$sOutput =~ s,\s+$,,;

	# remove tags e.g. "1fc39a7e9d79 tip"

	$sOutput =~ s,([0-9a-z]+)\s+.*,$1,;

	return $sOutput;

}

sub get_job_number

{

	my ($sKey) = @_;

	$sKey=lc($sKey);

	my %hnNumbers = ();

	my $nAttempts = 0;

	my $bGotNumber = 0;

	do

	{

		open(FILE, "+<$sNUMBERS_FILE") or die("Can't open $sNUMBERS_FILE");

		if ( flock(FILE, 6) )

		{

			my $sLine;

			while ($sLine = <FILE>)

			{

				$hnNumbers{lc($1)} = $2 if ($sLine =~ m%(.*),(.*)%);

			}

			$hnNumbers{$sKey} = 0 if (! $hnNumbers{$sKey} );

			$hnNumbers{$sKey} = $hnNumbers{$sKey} + 1;

			seek(FILE, 0, 0);

			for my $sStr ( keys(%hnNumbers) )

			{

				print FILE "$sStr,$hnNumbers{$sStr}\n";

			}

			truncate(FILE,tell(FILE));

			$bGotNumber = 1;

		}

		else

		{

			$nAttempts ++;

			sleep(3);

		}

		close(FILE);

	}

	until ( $bGotNumber or $nAttempts == $nLOCK_FILE_MAX_ATTEMPTS );

	return $hnNumbers{$sKey};

}

sub acquire_drive_letter

{

	my %hsPidsAndTimestamps = ();

	my $sLetterToRelease = '';

	my $nAttempts = 0;

	my $bAcquired = 0;

	do

	{

		open(FILE, "+<$sLETTERS_FILE") or die("Can't open $sLETTERS_FILE");

		if ( flock(FILE, 6) )

		{

			my $sLine;

			while ($sLine = <FILE>)

			{

				if ($sLine =~ m%([^,]*),(.*)%)

				{

					my $sLetter=$1;

					my $sString=$2;

					$sString=~m%([^,]*),(.*)%;

					my $nPid=$1;

					my $nTimestamp=$2;

					if (time()-$nTimestamp<=$nMAX_LETTER_AGE_SECONDS)

					{

						$hsPidsAndTimestamps{$sLetter} = $sString;

					}

					else

					{

						# lease has expired: unsubst drive letter and don't add to hash

						system("subst $sLetter: /d");

						print "forced release of letter: $sLetter (and drive unsubsted)\n";

					}

				}

			}

			for my $sNewLetter ('H'..'Y')

			{

				if (! $hsPidsAndTimestamps{$sNewLetter})

				{

					my $sTimestamp = time();

					$hsPidsAndTimestamps{$sNewLetter} = "$$,$sTimestamp";

					$sLetterToRelease = $sNewLetter;

					last;

				}

			}

			seek(FILE, 0, 0);

			for my $sLetter ( keys(%hsPidsAndTimestamps) )

			{

				print FILE "$sLetter,$hsPidsAndTimestamps{$sLetter}\n";

			}

			truncate(FILE,tell(FILE));

			$bAcquired = 1;

		}

		else

		{

			$nAttempts ++;

			sleep(3);

		}

		close(FILE);

	}

	until ( $bAcquired or $nAttempts == $nLOCK_FILE_MAX_ATTEMPTS );

	return $sLetterToRelease;

}

sub release_drive_letter

{

	my ($sLetterToRelease) = @_;

	my %hsPidsAndTimestamps = ();

	my $nAttempts = 0;

	my $bAcquired = 0;

	do

	{

		open(FILE, "+<$sLETTERS_FILE") or die("Can't open $sLETTERS_FILE");

		if ( flock(FILE, 6) )

		{

			my $sLine;

			while ($sLine = <FILE>)

			{

				$hsPidsAndTimestamps{$1} = $2 if ($sLine =~ m%([^,]*),(.*)%);

			}

			delete $hsPidsAndTimestamps{$sLetterToRelease};

			seek(FILE, 0, 0);

			for my $sLetter ( keys(%hsPidsAndTimestamps) )

			{

				print FILE "$sLetter,$hsPidsAndTimestamps{$sLetter}\n";

			}

			truncate(FILE,tell(FILE));

			$bAcquired = 1;

		}

		else

		{

			$nAttempts ++;

			sleep(3);

		}

		close(FILE);

	}

	until ( $bAcquired or $nAttempts == $nLOCK_FILE_MAX_ATTEMPTS );

}