#!/bin/bash

# Copyright (C) 2009, 2010, 2012, Mark J. Wielaard <mark@klomp.org>
# This IcedTea build script is free software: you can redistribute it
# and/or modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# http://www.gnu.org/copyleft/gpl.html

# OLD builder script. Being slowly replaced with buildbot setup.
# Please improve the master.cfg buildbot configuration instead of
# trying to improve this hacky shell script.
#
# Currently being run on builder.classpath.org with:
# while true; do time ./build.sh 6; date; sleep 600; \
#                time ./build.sh 7; date; sleep 600; \
#                time ./build.sh trunk; date; sleep 600; done 2>&1 \
#			| tee build.log

# Where to send error reports, add committers later.
EMAIL="testresults@icedtea.classpath.org"

# Can we check somehow whether there is a build busy?
# http://www.davidpashley.com/articles/writing-robust-shell-scripts.html

if [ $# -ne 1 ]; then
 echo "build.sh takes one argument 6, 7 or trunk"
 exit -1;
fi

if [ "$1" == "6" -o "$1" == "7" ]; then
 EXTRA_VERBOSE='VERBOSE=true'
 EXTRA_CONFIGURE='--disable-system-lcms'
elif [ "$1" == "trunk" ]; then
 EXTRA_VERBOSE='LOG=debug'
 EXTRA_CONFIGURE=''
else
 echo "build.sh argument must be 6, 7 or trunk"
 exit -1;
fi

# Add dash (-) in case of trunk to version string, to make file/dir names
# more readable.
if [ "$1" == "trunk" ]; then
 VERSIONSTR="-trunk"
else
 VERSIONSTR="$1"
fi

BASE_BUILD_DIR=/usr/local/build
ICEDTEA_DIR=$BASE_BUILD_DIR/icedtea${VERSIONSTR}
ICEDTEA_BUILD_DIR=$BASE_BUILD_DIR/icedtea${VERSIONSTR}-build

# Build artifacts, sources and test results will be stored here.
RESULTS_DIR=/usr/local/build/results/icedtea${VERSIONSTR}

echo "Building $ICEDTEA_DIR"
echo " in $ICEDTEA_BUILD_DIR"
echo " results into $RESULTS_DIR"

cd $ICEDTEA_DIR
HG_LAST_ID=$(hg id -i -r tip)
HG_LAST_REV=$(hg id -n -r tip)
echo "Last hg id: $HG_LAST_ID (local rev: $HG_LAST_REV)"

hg pull && hg update
HG_CURRENT_ID=$(hg id -i -r tip)
HG_CURRENT_REV=$(hg id -n -r tip)

if [ "$HG_LAST_ID" == "$HG_CURRENT_ID" ]; then
  echo "Nothing to do last id: $HG_LAST_ID, equals current id: $HG_CURRENT_ID"
  exit 1
fi

echo "Rebuilding: last id: $HG_LAST_ID, current id: $HG_CURRENT_ID"

# The range of changes (one past the last local rev)
HG_REV_RANGE="$(expr $HG_LAST_REV + 1):$HG_CURRENT_REV"

# Which people made changes between then and now?
# Qualify those users without a full email address as @icedtea.classpath.org.
AT_USERS=$(hg log -r$HG_REV_RANGE --template '{author|email}\n' \
	| sort -u | grep @)
NO_AT_USERS=$(hg log -r$HG_REV_RANGE --template '{author|email}\n' \
	| sort -u | grep -v @ | sed s/\$/\@icedtea.classpath.org/)
USERS="$AT_USERS $NO_AT_USERS"

CHANGES=$(hg log -r$HG_REV_RANGE --template \
  'rev:  {node|short}\nuser: {author}\ndate: {date|date}\n\n{desc|strip}\n\n')

# echo "Changes made by: $USERS"
# echo "Changes: $CHANGES"

# Warn everybody that made changes in case something went wrong.
EMAIL="$EMAIL $USERS"

# Announce the test build coming up.
#(echo -n "Doing a test build for IcedTea${VERSIONSTR}"; echo; echo "$CHANGES") \
#	| mail -s "IcedTea${VERSIONSTR} build testing for $HG_CURRENT_ID" $EMAIL

# Remove both 6 and 7, there is only disk space for one build
#echo "Removing old builds $BASE_BUILD_DIR/icedtea6-build $BASE_BUILD_DIR/icedtea7-build..."
#rm -rf $BASE_BUILD_DIR/icedtea6-build $BASE_BUILD_DIR/icedtea7-build
echo removing old build in $ICEDTEA_BUILD_DIR
rm -rf $ICEDTEA_BUILD_DIR

mkdir $ICEDTEA_BUILD_DIR

# Might contain old tar.gz/bz2 sources so we don't need to redownload.
# Some are in the top level dir, others are in the drops subdir.
# Don't worry if cp fails, we will download fresh ones.
SOURCES_DIR=$RESULTS_DIR/src
cp -r $SOURCES_DIR/*.tar.* $SOURCES_DIR/drops $ICEDTEA_BUILD_DIR/

BUILD_LOG_FILE=$BASE_BUILD_DIR/build-icedtea${VERSIONSTR}.log
echo "Putting build log in $BUILD_LOG_FILE"

# Make sure a failure in any command in a pipe, fails the whole pipe command.
set -o pipefail

# Build in separate dir.
# Figure out a way to use local openjdk tar.gz files
# maybe just copy to to an archive dir before cleanup and then copy back.
# Keep logs of build, and check if it was successfull
(cd $ICEDTEA_DIR && ./autogen.sh \
	&& cd $ICEDTEA_BUILD_DIR \
	&& $ICEDTEA_DIR/configure \
		--enable-nss \
		$EXTRA_CONFIGURE \
	&& make $EXTRA_VERBOSE) 2>&1 | tee $BUILD_LOG_FILE
BUILD_RESULT=$?

echo "Build result: $BUILD_RESULT"

# store the full build log and config.log file
cp $ICEDTEA_BUILD_DIR/config.log $BUILD_LOG_FILE $RESULTS_DIR/

RESULTS_URL="http://builder.wildebeest.org/icedtea/icedtea${VERSIONSTR}/"

if [ $BUILD_RESULT -ne 0 ]; then
  (echo "The current IcedTea${VERSIONSTR} build fails."; \
   echo; \
   echo "More info at $RESULTS_URL"; \
   echo; \
   echo "Possibly, but not necessarily, because of one of these changes:"; \
   echo; \
   echo "$CHANGES"; \
   echo; echo; \
   echo "Last part of build log: "; echo; \
   tail -160 $BUILD_LOG_FILE) \
	| mail -s "IcedTea${VERSIONSTR} build failed for $HG_CURRENT_ID" $EMAIL
  exit -1
fi

# Run tests under fake x-server so gui tests work "normally"
cd $ICEDTEA_BUILD_DIR && xvfb-run -e xvfb-errors -a -s -ac make check -k

# Old results are here, new results will be stored there.
TESTS_DIR=$RESULTS_DIR/test

cmp $ICEDTEA_BUILD_DIR/test/jtreg-summary.log $TESTS_DIR/jtreg-summary.log
TEST_RESULT=$?

echo "Test results compare: $TEST_RESULT"

if [ $TEST_RESULT -ne 0 ]; then
  (echo "The current IcedTea${VERSIONSTR} build test results changed."; \
   echo; \
   echo "Changed test results: "; echo; \
   diff -u $TESTS_DIR/jtreg-summary.log \
	   $ICEDTEA_BUILD_DIR/test/jtreg-summary.log; \
   echo; \
   echo "More info at $RESULTS_URL"; \
   echo; \
   echo "Possibly, but not necessarily, because of one of these changes:"; \
   echo; \
   echo "$CHANGES") \
	| mail -s "IcedTea${VERSIONSTR} test results changed for $HG_CURRENT_ID" $EMAIL;
else
  (echo "The current IcedTea${VERSIONSTR} build succeeded, no changes in test results."; \
   echo; \
   echo "More info at $RESULTS_URL"; \
   echo; \
   echo "New changes since last time:"; \
   echo; \
   echo "$CHANGES") \
	| mail -s "IcedTea${VERSIONSTR} build succeeded for $HG_CURRENT_ID" $EMAIL;
fi

# Need to fixup jtreg report html files.
# Escape paths for sed.
# From path is absolute build path on (chrooted) file system.
# To path is absolute (prefix) path on webserver.
FROM_PATH="\/usr\/local\/build\/icedtea${VERSIONSTR}-build\/test\/"
TO_PATH="\/icedtea\/icedtea${VERSIONSTR}\/test\/"
for i in `find $ICEDTEA_BUILD_DIR/test/*/JTreport -name \*.html`; do \
	 sed -i "s/$FROM_PATH/$TO_PATH/" $i; \
done

rm -rf $TESTS_DIR
mkdir $TESTS_DIR
cd $ICEDTEA_BUILD_DIR
cp -r test/*log test/jdk test/hotspot test/langtools $TESTS_DIR/

# Not enough room to keep the debuginfo, remove it for now.
#find $ICEDTEA_BUILD_DIR/openjdk/build/linux-i586/j2sdk-image/jre/lib \
#	-name \*.so \
#	| xargs strip --strip-debug --preserve-dates

# Package up the resulting j2sdk-image dir.
cd $ICEDTEA_BUILD_DIR/openjdk.build
tar zcf j2sdk-image.tar.gz j2sdk-image

mv j2sdk-image.tar.gz $RESULTS_DIR/

# Store old tar.gz/bz2 source bundles and drops, might be useful next time.
rm -rf $SOURCES_DIR
mkdir $SOURCES_DIR
cp -r $ICEDTEA_BUILD_DIR/*.tar.* $ICEDTEA_BUILD_DIR/drops $SOURCES_DIR/

# And the actual icedtea sources used.
rm -f $SOURCES_DIR/icedtea${VERSIONSTR}.tar.gz
cd $ICEDTEA_DIR && hg archive --type tgz $SOURCES_DIR/icedtea${VERSIONSTR}.tar.gz