# 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="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="\\\\v800020\\Publish\\SF_builds\\numbers.txt";

my $sLETTERS_FILE="letters.txt";

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

my $sFbfProjectRepo = "\\\\bishare\\mercurial_development\\oss\\FCL\\interim\\fbf\\projects\\packages";

my $sFbfProjectDir = '';

my $sSubProject = '';

#my $sSourcesFile = '';

#my $sModelFile = '';

my $sFbfConfigRepo="\\\\bishare\\mercurial_development\\oss\\FCL\\interim\\fbf\\configs\\default";

my $sFbfConfigDir = '';

my $nCmdLineNumber;

my $sDiamondsTag = '';

my $bHudson = 0;

my $bPublish = 1;

my %hHlmDefines = ();

my $bHelp = 0;

GetOptions((

	'configrepo=s' => \$sFbfConfigRepo,

	'configdir=s' => \$sFbfConfigDir,

	'projectrepo=s' => \$sFbfProjectRepo,

	'projectdir=s' => \$sFbfProjectDir,

	'subproj=s' => \$sSubProject,

	#'sources=s' => \$sSourcesFile,

	#'model=s' => \$sModelFile,

	'number=s' => \$nCmdLineNumber,

	'tag=s' => \$sDiamondsTag,

	'hudson!' => \$bHudson,

	'publish!' => \$bPublish,

	'define=s' => \%hHlmDefines,

	'help!' => \$bHelp

));

if ($bHelp or !($sSubProject or $sFbfProjectRepo or $sFbfProjectDir))

{

	print "Usage: build_package.pl --subproj=RELPATH [OPTIONS]\n";

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

	print "where OPTIONS are:\n";

	print "\t--subproj=RELPATH Select subproject located at RELPATH (relative to the root of the project repository)\n";

	print "\t--projectrepo=REPO[#REV] Use repository REPO at revision REV for the project (instead of \\\\bishare\\mercurial_internal\\fbf\\projects\\packages)\n";

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

	#print "\t--sources=FILE ...\n";

	#print "\t--model=FILE ...\n";

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

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

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

	print "\t--tag=TAG Apply Diamonds tag TAG to this build\n";

	print "\t--hudson Checks that there is at least NUMBER_OF_PROCESSORS X 10 GB available on the working drive\n";

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

	print "\t--define ATTRIBUTE=VALUE Pass -D statements to the Helium Framework\n";

	exit(0);

}

if ($sSubProject and $sSubProject !~ m,^([^/]+)/[^/]+/([^/]+)$,)

{

	print "ERROR: Option --subproj must be in the format codeline/layer/package (e.g. MCL/os/boardsupport)\n";

	exit(0);

}

#if (!$sFbfProjectRepo and !$sFbfProjectDir and (!$sSourcesFile or !$sModelFile))

#{

#	print "Error: If you don't provide --projectrepo or --projectdir then you have to provide both --sources and --model\n";

#	exit(0);

#}

my $sWORKING_DRIVE = find_working_drive();

print "Will use drive $sWORKING_DRIVE as working drive for this build\n";

if ($bHudson)

{

	my $nProcessors = $ENV{'NUMBER_OF_PROCESSORS'};

	my $diroutput = `dir /-C $sWORKING_DRIVE`;

	my $nBytesFree = 0;

	$nBytesFree = $1 if ($diroutput =~ /(\d+) bytes free/);

	my $nNeededSpace = 10*$nProcessors*1073741824;

	#print "Needed space is $nNeededSpace\n";

	if ($nBytesFree < $nNeededSpace)

	{

		print "ERROR: Available disk space on working drive ($nBytesFree bytes) is not enough to run a package build with Hudson.\n";

		exit(1);

	}

}

my $sFbfProjectRev = '';

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

{

	$sFbfProjectRepo = $1;

	$sFbfProjectRev = $2;

}

my $sFbfConfigRev = '';

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

{

	$sFbfConfigRepo = $1;

	$sFbfConfigRev = $2;

}

my $sHlmDefineOpt = '';

for (keys %hHlmDefines)

{

	$sHlmDefineOpt .= "-D$_=$hHlmDefines{$_} ";

}

my $sTestBuildOpt = "";

$sTestBuildOpt = "-Dsf.spec.publish.diamonds.tag=\"$sDiamondsTag\"" if ( $sDiamondsTag );

my $sNoPublishOpt = "";

$sNoPublishOpt = "-Dsf.spec.publish.enable=false" if ( !$bPublish );

$sNUMBERS_FILE = "$sWORKING_DRIVE\\numbers_test.txt" if ( !$bPublish );

my $sJobLabel = 'job';

if ($sSubProject)

{

	$sSubProject =~ m,^([^/]+)/[^/]+/([^/]+)$,;

	$sJobLabel = $2;

}

elsif ($sFbfProjectRepo)

{

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

	$sJobLabel = $2;

}

elsif ($sFbfProjectDir)

{

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

	$sJobLabel = $2;

}

#elsif ($sSourcesFile)

#{

#	$sSourcesFile =~ m,/(adaptation|app|mw|os|ostools|tools)[\\/]([^\\^/]+),i;

#	$sJobLabel = $2;

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

#	$sJobLabel = $2 if (!$sJobLabel);

#}

mkdir("$sWORKING_DRIVE\\$sJOB_BASE_DIR") if (!-d "$sWORKING_DRIVE\\$sJOB_BASE_DIR");

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

print "Created project dir $sWORKING_DRIVE\\$sJOB_BASE_DIR\\$sJobDir\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);

my $sBootstrapCmd = "hlm -f bootstrap.xml $sConfigArg $sProjectArg -Dsf.target.dir=$sJobDir";

print("$sBootstrapCmd\n");

system($sBootstrapCmd);

# check that $sNUMBERS_FILE exists, otherwise create it

if (!-f $sNUMBERS_FILE)

{

	open FILE, ">$sNUMBERS_FILE";

	print FILE "\n";

	close FILE;

}

my $sJobNumberKey = '';

my $sPackage = '';

my $sPlatform = '';

my $nUnformattedNumber = 0;

if ($nCmdLineNumber)

{

	$nUnformattedNumber = $nCmdLineNumber;

}

elsif ($sFbfProjectRepo)

{

	if ($sSubProject)

	{

		# key = <package>_<codeline>, e.g. for subproj=MCL/os/boardsupport -> key=boardsupport_MCL

		$sSubProject =~ m,^([^/]+)/[^/]+/([^/]+)$,;

		$sPackage = $2;

		$sPlatform = $1;

		$sJobNumberKey = "$2_$1";

	}

	else

	{

		# key = hash of the rev.0 of the package project repo

		my $sRevZeroHash = get_rev_zero_hash($sFbfProjectRepo);

		$sJobNumberKey = $sRevZeroHash;

	}

	$nUnformattedNumber = get_job_number($sJobNumberKey);

}

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

print "For build key $sJobNumberKey got assigned number \"$nJobNumber\"\n";

# check that $sLETTERS_FILE exists, otherwise create it

if (!-f "$sWORKING_DRIVE\\$sLETTERS_FILE")

{

	open FILE, ">$sWORKING_DRIVE\\$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);

my $sJobRootDirArg = "-Dsf.spec.job.rootdir=$sWORKING_DRIVE\\fbf_job";

my $sSubProjArg = '';

$sSubProjArg = "-Dsf.subproject.path=$sSubProject" if ($sSubProject);

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

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

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

my $sPreparationCmd = "hlm sf-prep -Dsf.project.type=package $sSubProjArg -Dsf.spec.job.number=$nJobNumber -Dsf.spec.job.drive=$sDriveLetter: $sTestBuildOpt $sNoPublishOpt $sJobRootDirArg $sHlmDefineOpt";

print("$sPreparationCmd\n");

system($sPreparationCmd);

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

my $sBuildallCmd = "hlm sf-build-all -Dsf.project.type=package $sSubProjArg -Dsf.spec.job.number=$nJobNumber -Dsf.spec.job.drive=$sDriveLetter: $sTestBuildOpt $sNoPublishOpt $sJobRootDirArg $sHlmDefineOpt";

print("$sBuildallCmd\n");

system($sBuildallCmd);

print("cd $sBOOTSTRAP_DIR\n");

chdir("$sBOOTSTRAP_DIR");

# 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";

if ($bHudson)

{

	print "cleaning job directories...\n";

	if (-d "$sWORKING_DRIVE\\$sJOB_BASE_DIR\\$sJobLabel") # project dir

	{

		print "rmdir /S $sWORKING_DRIVE\\$sJOB_BASE_DIR\\$sJobLabel\n";

		system("rmdir /S /Q $sWORKING_DRIVE\\$sJOB_BASE_DIR\\$sJobLabel");

	}

	if (-d "$sWORKING_DRIVE\\fbf_job\\$sPackage\_$sPlatform.$nJobNumber") # build drive

	{

		print "rmdir /S $sWORKING_DRIVE\\fbf_job\\$sPackage\_$sPlatform.$nJobNumber\n";

		system("rmdir /S /Q $sWORKING_DRIVE\\fbf_job\\$sPackage\_$sPlatform.$nJobNumber");

	}

}

sub find_working_drive

{

	my @drive_list = ('E', 'G', 'D', 'C');

	for my $drive (@drive_list)

	{

		return "$drive:" if (-d "$drive:/");

	}

	die "Could not find suitable working drive.";

}

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

}