364 lines
11 KiB
Bash
364 lines
11 KiB
Bash
#!/usr/bin/env bash
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#
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# A library to simplify using the SBT launcher from other packages.
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# Note: This should be used by tools like giter8/conscript etc.
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# TODO - Should we merge the main SBT script with this library?
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declare -a residual_args
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declare -a java_args
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declare -a scalac_args
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declare -a sbt_commands
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declare java_cmd=java
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declare java_version
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declare init_sbt_version="1.2.8"
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declare sbt_default_mem=1024
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declare SCRIPT=$0
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while [ -h "$SCRIPT" ] ; do
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ls=$(ls -ld "$SCRIPT")
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# Drop everything prior to ->
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link=$(expr "$ls" : '.*-> \(.*\)$')
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if expr "$link" : '/.*' > /dev/null; then
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SCRIPT="$link"
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else
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SCRIPT=$(dirname "$SCRIPT")/"$link"
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fi
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done
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declare -r sbt_bin_dir="$(dirname "$SCRIPT")"
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declare -r sbt_home="$(dirname "$sbt_bin_dir")"
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echoerr () {
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echo 1>&2 "$@"
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}
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vlog () {
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[[ $verbose || $debug ]] && echoerr "$@"
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}
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dlog () {
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[[ $debug ]] && echoerr "$@"
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}
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jar_file () {
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echo "$(cygwinpath "${sbt_home}/bin/sbt-launch.jar")"
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}
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acquire_sbt_jar () {
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sbt_jar="$(jar_file)"
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if [[ ! -f "$sbt_jar" ]]; then
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echoerr "Could not find launcher jar: $sbt_jar"
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exit 2
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fi
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}
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rt_export_file () {
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echo "${sbt_bin_dir}/java9-rt-export.jar"
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}
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execRunner () {
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# print the arguments one to a line, quoting any containing spaces
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[[ $verbose || $debug ]] && echo "# Executing command line:" && {
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for arg; do
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if printf "%s\n" "$arg" | grep -q ' '; then
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printf "\"%s\"\n" "$arg"
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else
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printf "%s\n" "$arg"
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fi
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done
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echo ""
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}
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# THis used to be exec, but we loose the ability to re-hook stty then
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# for cygwin... Maybe we should flag the feature here...
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"$@"
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}
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addJava () {
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dlog "[addJava] arg = '$1'"
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java_args=( "${java_args[@]}" "$1" )
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}
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addSbt () {
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dlog "[addSbt] arg = '$1'"
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sbt_commands=( "${sbt_commands[@]}" "$1" )
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}
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addResidual () {
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dlog "[residual] arg = '$1'"
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residual_args=( "${residual_args[@]}" "$1" )
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}
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addDebugger () {
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addJava "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=$1"
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}
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get_mem_opts () {
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# if we detect any of these settings in ${JAVA_OPTS} or ${JAVA_TOOL_OPTIONS} we need to NOT output our settings.
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# The reason is the Xms/Xmx, if they don't line up, cause errors.
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if [[ "${JAVA_OPTS}" == *-Xmx* ]] || [[ "${JAVA_OPTS}" == *-Xms* ]] || [[ "${JAVA_OPTS}" == *-XX:MaxPermSize* ]] || [[ "${JAVA_OPTS}" == *-XX:MaxMetaspaceSize* ]] || [[ "${JAVA_OPTS}" == *-XX:ReservedCodeCacheSize* ]]; then
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echo ""
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elif [[ "${JAVA_TOOL_OPTIONS}" == *-Xmx* ]] || [[ "${JAVA_TOOL_OPTIONS}" == *-Xms* ]] || [[ "${JAVA_TOOL_OPTIONS}" == *-XX:MaxPermSize* ]] || [[ "${JAVA_TOOL_OPTIONS}" == *-XX:MaxMetaspaceSize* ]] || [[ "${JAVA_TOOL_OPTIONS}" == *-XX:ReservedCodeCacheSize* ]]; then
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echo ""
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elif [[ "${SBT_OPTS}" == *-Xmx* ]] || [[ "${SBT_OPTS}" == *-Xms* ]] || [[ "${SBT_OPTS}" == *-XX:MaxPermSize* ]] || [[ "${SBT_OPTS}" == *-XX:MaxMetaspaceSize* ]] || [[ "${SBT_OPTS}" == *-XX:ReservedCodeCacheSize* ]]; then
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echo ""
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else
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# a ham-fisted attempt to move some memory settings in concert
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# so they need not be messed around with individually.
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local mem=${1:-$sbt_default_mem}
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local codecache=$(( $mem / 8 ))
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(( $codecache > 128 )) || codecache=128
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(( $codecache < 512 )) || codecache=512
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local class_metadata_size=$(( $codecache * 2 ))
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if [[ -z $java_version ]]; then
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java_version=$(jdk_version)
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fi
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local class_metadata_opt=$((( $java_version < 8 )) && echo "MaxPermSize" || echo "MaxMetaspaceSize")
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local arg_xms=$([[ "${java_args[@]}" == *-Xms* ]] && echo "" || echo "-Xms${mem}m")
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local arg_xmx=$([[ "${java_args[@]}" == *-Xmx* ]] && echo "" || echo "-Xmx${mem}m")
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local arg_rccs=$([[ "${java_args[@]}" == *-XX:ReservedCodeCacheSize* ]] && echo "" || echo "-XX:ReservedCodeCacheSize=${codecache}m")
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local arg_meta=$([[ "${java_args[@]}" == *-XX:${class_metadata_opt}* && ! (( $java_version < 8 )) ]] && echo "" || echo "-XX:${class_metadata_opt}=${class_metadata_size}m")
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echo "${arg_xms} ${arg_xmx} ${arg_rccs} ${arg_meta}"
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fi
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}
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get_gc_opts () {
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local older_than_9=$(( $java_version < 9 ))
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if [[ "$older_than_9" == "1" ]]; then
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# don't need to worry about gc
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echo ""
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elif [[ "${JAVA_OPTS}" =~ Use.*GC ]] || [[ "${JAVA_TOOL_OPTIONS}" =~ Use.*GC ]] || [[ "${SBT_OPTS}" =~ Use.*GC ]] ; then
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# GC arg has been passed in - don't change
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echo ""
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else
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# Java 9+ so revert to old
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echo "-XX:+UseParallelGC"
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fi
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}
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require_arg () {
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local type="$1"
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local opt="$2"
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local arg="$3"
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if [[ -z "$arg" ]] || [[ "${arg:0:1}" == "-" ]]; then
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echo "$opt requires <$type> argument"
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exit 1
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fi
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}
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is_function_defined() {
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declare -f "$1" > /dev/null
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}
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# parses JDK version from the -version output line.
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# 8 for 1.8.0_nn, 9 for 9-ea etc, and "no_java" for undetected
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jdk_version() {
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local result
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local lines=$("$java_cmd" -Xms32M -Xmx32M -version 2>&1 | tr '\r' '\n')
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local IFS=$'\n'
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for line in $lines; do
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if [[ (-z $result) && ($line = *"version \""*) ]]
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then
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local ver=$(echo $line | sed -e 's/.*version "\(.*\)"\(.*\)/\1/; 1q')
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# on macOS sed doesn't support '?'
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if [[ $ver = "1."* ]]
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then
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result=$(echo $ver | sed -e 's/1\.\([0-9]*\)\(.*\)/\1/; 1q')
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else
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result=$(echo $ver | sed -e 's/\([0-9]*\)\(.*\)/\1/; 1q')
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fi
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fi
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done
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if [[ -z $result ]]
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then
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result=no_java
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fi
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echo "$result"
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}
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process_args () {
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while [[ $# -gt 0 ]]; do
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case "$1" in
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-h|-help) usage; exit 1 ;;
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-v|-verbose) verbose=1 && shift ;;
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-d|-debug) debug=1 && addSbt "-debug" && shift ;;
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-ivy) require_arg path "$1" "$2" && addJava "-Dsbt.ivy.home=$2" && shift 2 ;;
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-mem) require_arg integer "$1" "$2" && sbt_mem="$2" && shift 2 ;;
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-jvm-debug) require_arg port "$1" "$2" && addDebugger $2 && shift 2 ;;
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-batch) exec </dev/null && shift ;;
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-sbt-jar) require_arg path "$1" "$2" && sbt_jar="$2" && shift 2 ;;
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-sbt-version) require_arg version "$1" "$2" && sbt_version="$2" && shift 2 ;;
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-java-home) require_arg path "$1" "$2" &&
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java_cmd="$2/bin/java" &&
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export JAVA_HOME="$2" &&
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export JDK_HOME="$2" &&
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export PATH="$2/bin:$PATH" &&
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shift 2 ;;
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"-D*") addJava "$1" && shift ;;
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-J*) addJava "${1:2}" && shift ;;
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*) addResidual "$1" && shift ;;
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esac
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done
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is_function_defined process_my_args && {
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myargs=("${residual_args[@]}")
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residual_args=()
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process_my_args "${myargs[@]}"
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}
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java_version="$(jdk_version)"
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vlog "[process_args] java_version = '$java_version'"
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}
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# Extracts the preloaded directory from either -Dsbt.preloaded or -Dsbt.global.base
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# properties by looking at:
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# - _JAVA_OPTIONS environment variable,
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# - SBT_OPTS environment variable,
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# - JAVA_OPTS environment variable and
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# - properties set by command-line options
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# in that order. The last one will be chosen such that `sbt.preloaded` is
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# always preferred over `sbt.global.base`.
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getPreloaded() {
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local -a _java_options_array
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local -a sbt_opts_array
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local -a java_opts_array
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read -a _java_options_array <<< "$_JAVA_OPTIONS"
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read -a sbt_opts_array <<< "$SBT_OPTS"
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read -a java_opts_array <<< "$JAVA_OPTS"
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local args_to_check=(
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"${_java_options_array[@]}"
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"${sbt_opts_array[@]}"
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"${java_opts_array[@]}"
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"${java_args[@]}")
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local via_global_base="$HOME/.sbt/preloaded"
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local via_explicit=""
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for opt in "${args_to_check[@]}"; do
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if [[ "$opt" == -Dsbt.preloaded=* ]]; then
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via_explicit="${opt#-Dsbt.preloaded=}"
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elif [[ "$opt" == -Dsbt.global.base=* ]]; then
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via_global_base="${opt#-Dsbt.global.base=}/preloaded"
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fi
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done
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echo "${via_explicit:-${via_global_base}}"
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}
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syncPreloaded() {
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local source_preloaded="$sbt_home/lib/local-preloaded/"
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local target_preloaded="$(getPreloaded)"
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if [[ "$init_sbt_version" == "" ]]; then
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# FIXME: better $init_sbt_version detection
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init_sbt_version="$(ls -1 "$source_preloaded/org.scala-sbt/sbt/")"
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fi
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[[ -f "$target_preloaded/org.scala-sbt/sbt/$init_sbt_version/jars/sbt.jar" ]] || {
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# lib/local-preloaded exists (This is optional)
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[[ -d "$source_preloaded" ]] && {
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command -v rsync >/dev/null 2>&1 && {
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mkdir -p "$target_preloaded"
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rsync -a --ignore-existing "$source_preloaded" "$target_preloaded"
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}
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}
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}
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}
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# Detect that we have java installed.
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checkJava() {
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local required_version="$1"
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# Now check to see if it's a good enough version
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local good_enough="$(expr $java_version ">=" $required_version)"
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if [[ "$java_version" == "" ]]; then
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echo
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echo "No Java Development Kit (JDK) installation was detected."
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echo Please go to http://www.oracle.com/technetwork/java/javase/downloads/ and download.
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echo
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exit 1
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elif [[ "$good_enough" != "1" ]]; then
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echo
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echo "The Java Development Kit (JDK) installation you have is not up to date."
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echo $script_name requires at least version $required_version+, you have
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echo version $java_version
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echo
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echo Please go to http://www.oracle.com/technetwork/java/javase/downloads/ and download
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echo a valid JDK and install before running $script_name.
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echo
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exit 1
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fi
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}
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copyRt() {
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local at_least_9="$(expr $java_version ">=" 9)"
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if [[ "$at_least_9" == "1" ]]; then
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rtexport=$(rt_export_file)
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# The grep for java9-rt-ext- matches the filename prefix printed in Export.java
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java9_ext=$("$java_cmd" ${JAVA_OPTS} ${SBT_OPTS:-$default_sbt_opts} ${java_args[@]} \
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-jar "$rtexport" --rt-ext-dir | grep java9-rt-ext-)
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java9_rt=$(echo "$java9_ext/rt.jar")
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vlog "[copyRt] java9_rt = '$java9_rt'"
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if [[ ! -f "$java9_rt" ]]; then
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echo Copying runtime jar.
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mkdir -p "$java9_ext"
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execRunner "$java_cmd" \
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${JAVA_OPTS} \
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${SBT_OPTS:-$default_sbt_opts} \
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${java_args[@]} \
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-jar "$rtexport" \
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"${java9_rt}"
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fi
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addJava "-Dscala.ext.dirs=${java9_ext}"
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fi
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}
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run() {
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# process the combined args, then reset "$@" to the residuals
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process_args "$@"
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set -- "${residual_args[@]}"
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argumentCount=$#
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# Copy preloaded repo to user's preloaded directory
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syncPreloaded
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# no jar? download it.
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[[ -f "$sbt_jar" ]] || acquire_sbt_jar "$sbt_version" || {
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# still no jar? uh-oh.
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echo "Download failed. Obtain the sbt-launch.jar manually and place it at $sbt_jar"
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exit 1
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}
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# TODO - java check should be configurable...
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checkJava "6"
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# Java 9 support
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copyRt
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#If we're in cygwin, we should use the windows config, and terminal hacks
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if [[ "$CYGWIN_FLAG" == "true" ]]; then
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stty -icanon min 1 -echo > /dev/null 2>&1
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addJava "-Djline.terminal=jline.UnixTerminal"
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addJava "-Dsbt.cygwin=true"
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fi
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# run sbt
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execRunner "$java_cmd" \
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$(get_mem_opts $sbt_mem) \
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$(get_gc_opts) \
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${JAVA_OPTS} \
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${SBT_OPTS:-$default_sbt_opts} \
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${java_args[@]} \
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-jar "$sbt_jar" \
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"${sbt_commands[@]}" \
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"${residual_args[@]}"
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exit_code=$?
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# Clean up the terminal from cygwin hacks.
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if [[ "$CYGWIN_FLAG" == "true" ]]; then
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stty icanon echo > /dev/null 2>&1
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fi
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exit $exit_code
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}
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