blob: e4511ec2c32bd5a5468bb1bc06beb91b04e4cb08 (
plain) (
tree)
|
|
#!/usr/bin/env bash
# Launcher bash script that bootstraps CBT from source.
# (Some of the code for reporting missing dependencies and waiting for nailgun to come up is a bit weird.)
# This is intentionally kept as small as possible.
# Welcome improvements to this file:
# - reduce code size through better ideas
# - reduce code size by moving more of this into type-checked Java/Scala code (if possible without performance loss).
# - reduction of dependencies
# - performance improvements
shopt -qs extglob
seconds() {
date +"%s"
}
nanos() {
n=$(date +"%N")
if [ "$n" = "N" ]; then
n=$(gdate +"%N" 2>/dev/null)
fi
if [ "$n" = "" ]; then
n="0"
fi
echo 1$n
}
start_seconds=$(seconds)
start_nanos=$(nanos)
time_taken() {
i=$(( $(seconds) - start_seconds ))
n=$(( $(( $(nanos) - start_nanos )) / 1000000 ))
if [[ ( $n -lt 0 ) ]]; then
i=$(( i-1 ))
n=$(( n+1000 ))
fi
echo "$i.$n"
}
# utility function to log message to stderr with stating the time
log () {
msg=$1
enabled=1
while test $# -gt 0; do
if [[ "$1" == "-Dlog="* ]]; then
if [[ "$1" == *"time"* ]] || [[ "$1" == *"bash"* ]] || [[ "$1" == *"all"* ]]; then
enabled=0
fi
fi
shift
done
if [ $enabled -eq 0 ]; then
delta=$(time_taken)
echo "[$delta] $msg" 1>&2
fi
}
log "Checking for dependencies" "$@"
which javac >/dev/null 2>/dev/null
javac_installed=$?
if [ ! $javac_installed -eq 0 ]; then
echo "You need to install javac 1.7 or later! CBT needs it to bootstrap from Java sources into Scala." 1>&2
exit 1
fi
# log "cutting javac version" "$@"
# javac_version=$(javac -version 2>&1) # e.g. "javac 1.8.0_u60"
# javac_version_update=${javac_version/javac 1./} # e.g. "8.0_u60"
# javac_version_minor_pointed=${javac_version_update%_*} # e.g. "8.0"
# javac_version_minor=${javac_version_minor_pointed%.*} # e.g. "8"
# log "cutting javac version done" "$@"
# if [ ! "$javac_version_minor" -ge "7" ]; then
# echo "You need to install javac version 1.7 or greater!" 2>&1
# echo "Current javac version is $javac_version" 2>&1
# exit 1
# fi
which realpath >/dev/null 2>/dev/null
realpath_installed=$?
which gcc >/dev/null 2>/dev/null
gcc_installed=$?
if [ ! $realpath_installed -eq 0 ] && [ ! $gcc_installed -eq 0 ]; then
echo "You need realpath or gcc installed! CBT needs it to locate itself reliably." 1>&2
exit 252
fi
which gpg >/dev/null 2>/dev/null
gpg_installed=$?
if [ ! $gpg_installed -eq 0 ]; then
echo "(Note: gpg not found. In order to use publishSigned you'll need it.)" 1>&2
fi
CWD=$(pwd)
CBT_SCRIPT="$(readlink "$0")"
if [ "$CBT_SCRIPT" = "" ]; then
CBT_SCRIPT="$0"
fi
if [ "$CBT_SCRIPT" = "" ]; then
echo "cannot locate cbt launcher" 1>&2
exit 252
fi
_DIR=$(dirname "$CBT_SCRIPT" 2>/dev/null || dirname "$0" 2>/dev/null )
log "Find out real path. Build realpath if needed." "$@"
export CBT_HOME
CBT_HOME="$(dirname "$("$_DIR"/realpath/realpath.sh "$0")")"
export NAILGUN="$CBT_HOME"/nailgun_launcher/
export TARGET=target/scala-2.11/classes/
mkdir -p "$NAILGUN$TARGET"
nailgun_out="$NAILGUN/target/nailgun.stdout.log"
nailgun_err="$NAILGUN/target/nailgun.strerr.log"
DEBUG=""
foo(){
while test $# -gt 0; do
case "$1" in
"-debug")
DEBUG="-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005"
;;
"-Dlog=nailgun")
nailgun_out=/dev/stderr
nailgun_err=/dev/stderr
;;
"-Dlog=all")
nailgun_out=/dev/stderr
nailgun_err=/dev/stderr
;;
esac
shift
done
}
foo "$@"
if [ ! "$DEBUG" == "" ]; then
shift
fi
JAVA_OPTS_CBT=($DEBUG -Xmx1536m -Xss10M -XX:MaxJavaStackTraceDepth=-1 -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Xverify:none)
# ng on osx, install via brew install nailgun
# ng-nailgun on unbuntu, install via apt-get install nailgun
NG_EXECUTABLE=$(which ng 2>/dev/null|| env which ng-nailgun 2>/dev/null)
# on osx, install via brew install nailgun, /usr/local/Cellar/nailgun/*/libexec/nailgun-server-*.jar
# on unbuntu, install via apt-get install nailgun, /usr/share/java/nailgun.jar
# on debian, install via apt-get install nailgun, /usr/share/java/nailgun-server.jar
NG_SERVER_JAR=$( \
find /usr/local/Cellar/nailgun/*/libexec/nailgun-server-*.jar 2>/dev/null \
|| find /usr/share/java/nailgun.jar 2>/dev/null \
|| find /usr/share/java/nailgun-server.jar 2>/dev/null \
)
nailgun_installed=0
if ([ "$NG_EXECUTABLE" == "" ] || [ "$NG_SERVER_JAR" == "" ]) && [ "$1" != "direct" ]; then
nailgun_installed=1
echo "(Note: nailgun not found. It makes CBT faster! Try 'brew install nailgun' or 'apt-get install nailgun'.)" 1>&2
fi
NAILGUN_PORT=4444
NG="$NG_EXECUTABLE --nailgun-port $NAILGUN_PORT"
if [ "$1" = "kill" ]; then
echo "Stopping background process (nailgun)" 1>&2
$NG ng-stop >> "$nailgun_out" 2>> "$nailgun_err" &
exit 1
fi
which nc >/dev/null 2>/dev/null
nc_installed=$?
log "Check for running nailgun with nc." "$@"
server_up=1
if [ $nc_installed -eq 0 ]; then
nc -z -n -w 1 127.0.0.1 $NAILGUN_PORT > /dev/null 2>&1
server_up=$?
else
echo "(Note: nc not found. It will make slightly startup faster.)" 1>&2
fi
use_nailgun=0
if [ "$1" = "direct" ]; then
use_nailgun=1
shift
fi
loop=1
if [ "$1" == "loop" ]; then
loop=0
shift
fi
clearScreen=1
if [ "$1" == "clear" ]; then
clearScreen=0
shift
fi
if [ $nailgun_installed -eq 1 ] || [ "$1" = "publishSigned" ]; then
use_nailgun=1
fi
if [ $server_up -eq 0 ] && [ ! "$DEBUG" == "" ]; then
echo "Can't use \`-debug\` (without \`direct\`) when nailgun is already running. If you started it up with \`-debug\` you can still connect to it. Otherwise use \`cbt kill\` to kill it."
exit 1
fi
if [ $use_nailgun -eq 0 ] && [ ! $server_up -eq 0 ]; then
log "Starting background process (nailgun)" "$@"
# try to start nailgun-server, just in case it's not up
java "${options[@]}" "${JAVA_OPTS_CBT[@]}" -jar "$NG_SERVER_JAR" 127.0.0.1:$NAILGUN_PORT >> "$nailgun_out" 2>> "$nailgun_err" &
if [ ! "$DEBUG" == "" ]; then
echo "Started nailgun server in debug mode"
exit 1
fi
fi
stage1 () {
log "Checking for changes in cbt/nailgun_launcher" "$@"
NAILGUN_INDICATOR=$NAILGUN$TARGET../classes.last-success
changed=1
NAILGUN_SOURCES=("$NAILGUN"*.java "$CBT_HOME"/libraries/common-0/*.java)
for file in "${NAILGUN_SOURCES[@]}"; do
if [ "$file" -nt "$NAILGUN_INDICATOR" ]; then changed=0; fi
done
exitCode=0
if [ $changed -eq 0 ]; then
echo "Stopping background process (nailgun) if running" 1>&2
$NG ng-stop >> "$nailgun_out" 2>> "$nailgun_err" &
#rm $NAILGUN$TARGET/cbt/*.class 2>/dev/null # defensive delete of potentially broken class files
echo "Compiling cbt/nailgun_launcher" 1>&2
COMPILE_TIME=$(date +%YY%mm%dd%HH%MM.%SS|sed "s/[YmdHMS]//g")
#echo javac -Xlint:deprecation -Xlint:unchecked -d "$NAILGUN$TARGET" "${NAILGUN_SOURCES[@]}"
javac -Xlint:deprecation -Xlint:unchecked -d "$NAILGUN$TARGET" "${NAILGUN_SOURCES[@]}"
exitCode=$?
if [ $exitCode -eq 0 ]; then
touch -t "$COMPILE_TIME" "$NAILGUN_INDICATOR"
if [ $use_nailgun -eq 0 ]; then
echo "Starting background process (nailgun)" 1>&2
java "${options[@]}" "${JAVA_OPTS_CBT[@]}" -jar "$NG_SERVER_JAR" 127.0.0.1:$NAILGUN_PORT >> "$nailgun_out" 2>> "$nailgun_err" &
sleep 1
fi
fi
fi
log "run CBT and loop if desired. This allows recompiling CBT itself as part of compile looping." "$@"
if [ $exitCode -eq 0 ]; then
if [ ! $use_nailgun -eq 0 ]
then
log "Running JVM directly" "$@"
options=($JAVA_OPTS)
# JVM options to improve startup time. See https://github.com/cvogt/cbt/pull/262
java "${options[@]}" "${JAVA_OPTS_CBT[@]}" -cp "$NAILGUN$TARGET" cbt.NailgunLauncher "$(time_taken)" "$CWD" "$loop" "$@"
exitCode=$?
else
log "Running via background process (nailgun)" "$@"
for i in 0 1 2 3 4 5 6 7 8 9; do
log "Adding classpath." "$@"
$NG ng-cp "$NAILGUN$TARGET" >> "$nailgun_out" 2>> "$nailgun_err"
log "Checking if nailgun is up yet." "$@"
$NG cbt.NailgunLauncher check-alive >> "$nailgun_out" 2>> "$nailgun_err"
alive=$?
if [ $alive -eq 131 ] || [ $alive -eq 33 ]; then
# the 33 is not working right now
# echo "Nailgun call failed. Try 'cbt kill' and check the error log cbt/nailgun_launcher/target/nailgun.stderr.log" 1>&2
#elif [ $alive -eq 33 ]; then
break
else
log "Nope. Sleeping for 0.5 seconds" "$@"
#if [ "$i" -gt 1 ]; then
# echo "Waiting for nailgun to start... (In case of problems try -Dlog=nailgun or check logs in cbt/nailgun_launcher/target/*.log)" 1>&2
#fi
fi
sleep 0.3
done
log "Running CBT via Nailgun." "$@"
$NG cbt.NailgunLauncher "$(time_taken)" "$CWD" "$loop" "$@"
exitCode=$?
fi
log "Done running CBT." "$@"
fi
}
USER_PRESSED_CTRL_C=130
CBT_LOOP_FILE="$CWD/target/.cbt-loop.tmp"
if [ $loop -eq 0 ]; then
which fswatch >/dev/null 2>/dev/null
export fswatch_installed=$?
if [ ! $fswatch_installed -eq 0 ]; then
echo "please install fswatch to use cbt loop, e.g. via brew install fswatch"
exit 1
fi
fi
while true; do
if [ $clearScreen -eq 0 ]; then
clear
fi
if [ -f "$CBT_LOOP_FILE" ]; then
rm "$CBT_LOOP_FILE"
fi
stage1 "$@"
if [ ! $loop -eq 0 ] || [ $exitCode -eq $USER_PRESSED_CTRL_C ]; then
log "not looping, exiting" "$@"
break
else
files=
if [ -f "$CBT_LOOP_FILE" ]; then
files=($(cat "$CBT_LOOP_FILE"))
#rm "$CBT_LOOP_FILE"
fi
echo ""
echo "Watching for file changes... (ctrl+c short press for loop, long press for abort)"
#echo fswatch --one-event "${NAILGUN_SOURCES[@]}" "${files[@]}"
fswatch --one-event "${NAILGUN_SOURCES[@]}" "${files[@]}"
fi
done
log "Exiting CBT" "$@"
exit $exitCode
|