/
jdk_switcher.sh
350 lines (305 loc) · 10.7 KB
/
jdk_switcher.sh
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#!/usr/bin/env bash
if uname -a | grep x86_64 >/dev/null; then
ARCH_SUFFIX=amd64
else
ARCH_SUFFIX=i386
fi
: "${JDK_SWITCHER_DEFAULT:=openjdk8}"
: "${UJA:=update-java-alternatives}"
OPENJDK6_UJA_ALIAS="java-1.6.0-openjdk"
OPENJDK6_JAVA_HOME="/usr/lib/jvm/java-6-openjdk"
if [[ -d "/usr/lib/jvm/java-6-openjdk-${ARCH_SUFFIX}" ]]; then
OPENJDK6_UJA_ALIAS="java-1.6.0-openjdk-${ARCH_SUFFIX}"
OPENJDK6_JAVA_HOME="/usr/lib/jvm/java-6-openjdk-${ARCH_SUFFIX}"
fi
OPENJDK7_UJA_ALIAS="java-1.7.0-openjdk"
OPENJDK7_JAVA_HOME="/usr/lib/jvm/java-7-openjdk"
if [[ -d "/usr/lib/jvm/java-7-openjdk-${ARCH_SUFFIX}" ]]; then
OPENJDK7_UJA_ALIAS="java-1.7.0-openjdk-${ARCH_SUFFIX}"
OPENJDK7_JAVA_HOME="/usr/lib/jvm/java-7-openjdk-${ARCH_SUFFIX}"
fi
OPENJDK8_UJA_ALIAS="java-1.8.0-openjdk"
OPENJDK8_JAVA_HOME="/usr/lib/jvm/java-8-openjdk"
if [[ -d "/usr/lib/jvm/java-8-openjdk-${ARCH_SUFFIX}" ]]; then
OPENJDK8_UJA_ALIAS="java-1.8.0-openjdk-${ARCH_SUFFIX}"
OPENJDK8_JAVA_HOME="/usr/lib/jvm/java-8-openjdk-${ARCH_SUFFIX}"
fi
ORACLEJDK7_UJA_ALIAS="java-7-oracle"
ORACLEJDK7_JAVA_HOME="/usr/lib/jvm/java-7-oracle"
if [[ -d "/usr/lib/jvm/java-7-oracle-${ARCH_SUFFIX}" ]]; then
ORACLEJDK7_UJA_ALIAS="java-7-oracle-${ARCH_SUFFIX}"
ORACLEJDK7_JAVA_HOME="/usr/lib/jvm/java-7-oracle-${ARCH_SUFFIX}"
fi
ORACLEJDK8_UJA_ALIAS="java-8-oracle"
ORACLEJDK8_JAVA_HOME="/usr/lib/jvm/java-8-oracle"
if [[ -d "/usr/lib/jvm/java-8-oracle-${ARCH_SUFFIX}" ]]; then
ORACLEJDK8_UJA_ALIAS="java-8-oracle-${ARCH_SUFFIX}"
ORACLEJDK8_JAVA_HOME="/usr/lib/jvm/java-8-oracle-${ARCH_SUFFIX}"
fi
ORACLEJDK9_UJA_ALIAS="java-9-oracle"
ORACLEJDK9_JAVA_HOME="/usr/lib/jvm/java-9-oracle"
if [[ -d "/usr/lib/jvm/java-9-oracle-${ARCH_SUFFIX}" ]]; then
ORACLEJDK9_UJA_ALIAS="java-9-oracle-${ARCH_SUFFIX}"
ORACLEJDK9_JAVA_HOME="/usr/lib/jvm/java-9-oracle-${ARCH_SUFFIX}"
fi
ORACLEJDK10_UJA_ALIAS="java-10-oracle"
ORACLEJDK10_JAVA_HOME="/usr/lib/jvm/java-10-oracle"
if [[ -d "/usr/lib/jvm/java-10-oracle-${ARCH_SUFFIX}" ]]; then
ORACLEJDK10_UJA_ALIAS="java-10-oracle-${ARCH_SUFFIX}"
ORACLEJDK10_JAVA_HOME="/usr/lib/jvm/java-10-oracle-${ARCH_SUFFIX}"
fi
IBMJAVA8_UJA_ALIAS="java-8-ibm"
IBMJAVA8_JAVA_HOME="/usr/lib/jvm/java-8-ibm"
if [[ -d "/usr/lib/jvm/java-8-ibm-${ARCH_SUFFIX}" ]]; then
IBMJAVA8_UJA_ALIAS="java-8-ibm-${ARCH_SUFFIX}"
IBMJAVA8_JAVA_HOME="/usr/lib/jvm/java-8-ibm-${ARCH_SUFFIX}"
fi
OPENJDK8_OPENJ9_UJA_ALIAS="openjdk8-openj9"
OPENJDK8_OPENJ9_JAVA_HOME="/usr/lib/jvm/openjdk8-openj9"
if [[ -d "/usr/lib/jvm/openjdk8-openj9-${ARCH_SUFFIX}" ]]; then
OPENJDK8_OPENJ9_UJA_ALIAS="openjdk8-openj9-${ARCH_SUFFIX}"
OPENJDK8_OPENJ9_JAVA_HOME="/usr/lib/jvm/openjdk8-openj9-${ARCH_SUFFIX}"
fi
for config_file in /etc/default/jdk-switcher "${HOME}/.jdk_switcherrc" "${JDK_SWITCHER_CONFIG}"; do
if [[ -f "${config_file}" ]]; then
# shellcheck source=/dev/null
source "${config_file}"
fi
done
switch_to_openjdk6() {
echo "Switching to OpenJDK6 ($OPENJDK6_UJA_ALIAS), JAVA_HOME will be set to $OPENJDK6_JAVA_HOME"
sudo "${UJA}" --set "$OPENJDK6_UJA_ALIAS"
export JAVA_HOME="$OPENJDK6_JAVA_HOME"
}
switch_to_openjdk7() {
echo "Switching to OpenJDK7 ($OPENJDK7_UJA_ALIAS), JAVA_HOME will be set to $OPENJDK7_JAVA_HOME"
sudo "${UJA}" --set "$OPENJDK7_UJA_ALIAS"
export JAVA_HOME="$OPENJDK7_JAVA_HOME"
}
switch_to_openjdk8() {
echo "Switching to OpenJDK8 ($OPENJDK8_UJA_ALIAS), JAVA_HOME will be set to $OPENJDK8_JAVA_HOME"
sudo "${UJA}" --set "$OPENJDK8_UJA_ALIAS"
export JAVA_HOME="$OPENJDK8_JAVA_HOME"
}
switch_to_oraclejdk7() {
echo "Switching to Oracle JDK7 ($ORACLEJDK7_UJA_ALIAS), JAVA_HOME will be set to $ORACLEJDK7_JAVA_HOME"
sudo "${UJA}" --set "$ORACLEJDK7_UJA_ALIAS"
export JAVA_HOME="$ORACLEJDK7_JAVA_HOME"
}
switch_to_oraclejdk8() {
echo "Switching to Oracle JDK8 ($ORACLEJDK8_UJA_ALIAS), JAVA_HOME will be set to $ORACLEJDK8_JAVA_HOME"
sudo "${UJA}" --set "$ORACLEJDK8_UJA_ALIAS"
export JAVA_HOME="$ORACLEJDK8_JAVA_HOME"
}
switch_to_oraclejdk9() {
echo "Switching to Oracle JDK9 ($ORACLEJDK9_UJA_ALIAS), JAVA_HOME will be set to $ORACLEJDK9_JAVA_HOME"
sudo "${UJA}" --set "$ORACLEJDK9_UJA_ALIAS"
export JAVA_HOME="$ORACLEJDK9_JAVA_HOME"
}
switch_to_oraclejdk10() {
echo "Switching to Oracle JDK10 ($ORACLEJDK10_UJA_ALIAS), JAVA_HOME will be set to $ORACLEJDK10_JAVA_HOME"
sudo "${UJA}" --set "$ORACLEJDK10_UJA_ALIAS"
export JAVA_HOME="$ORACLEJDK10_JAVA_HOME"
}
switch_to_ibmjava8() {
echo "Switching to IBM JAVA8 ($IBMJAVA8_UJA_ALIAS), JAVA_HOME will be set to $IBMJAVA8_JAVA_HOME"
update_jdk_entries $IBMJAVA8_JAVA_HOME
}
switch_to_openjdk8_openj9() {
echo "Switching to OPENJDK8 OPENJ9 ($OPENJDK8_OPENJ9_UJA_ALIAS), JAVA_HOME will be set to $OPENJDK8_OPENJ9_JAVA_HOME"
update_jdk_entries $OPENJDK8_OPENJ9_JAVA_HOME
}
update_jdk_entries() {
java_home="$1"
jre=0
dir="$java_home/jre/bin"
if [ -d "$dir" ]; then
jre_entries=("$(ls "$dir")")
jre=1
update_alternatives "$dir" "jre_entries[@]"
fi
dir="$java_home/bin"
if [ -d "$dir" ]; then
jdk_entries=("$(ls "$dir")")
# If jre dir is present then remove duplicate binaries from bin dir
if [ $jre == 1 ]; then
unique_jdk_entries=()
for jdk_entry in "${jdk_entries[@]}"; do
found=0
for jre_entry in "${jre_entries[@]}"; do
if [ "$jdk_entry" == "$jre_entry" ]; then
found=1
break
fi
done
if [ $found == 0 ]; then
# shellcheck disable=SC2034
unique_jdk_entries[i]=$jdk_entry
i=$((i + 1))
fi
done
update_alternatives "$dir" "unique_jdk_entries[@]"
else
update_alternatives "$dir" "jdk_entries[@]"
fi
fi
export JAVA_HOME="$java_home"
}
update_alternatives() {
dir="$1"
priority=1
binaries=("${!2}")
for binary in "${binaries[@]}"; do
path="$dir/$binary"
if [[ "$binary" == "classic" ]] || [[ "$binary" == "j9vm" ]]; then
continue
fi
sudo update-alternatives --quiet --install "/usr/bin/$binary" "$binary" "$path" "$priority"
sudo update-alternatives --quiet --set "$binary" "$path"
done
}
print_home_of_openjdk6() {
echo "$OPENJDK6_JAVA_HOME"
}
print_home_of_openjdk7() {
echo "$OPENJDK7_JAVA_HOME"
}
print_home_of_openjdk8() {
echo "$OPENJDK8_JAVA_HOME"
}
print_home_of_oraclejdk7() {
echo "$ORACLEJDK7_JAVA_HOME"
}
print_home_of_oraclejdk8() {
echo "$ORACLEJDK8_JAVA_HOME"
}
print_home_of_oraclejdk9() {
echo "$ORACLEJDK9_JAVA_HOME"
}
print_home_of_oraclejdk10() {
echo "$ORACLEJDK10_JAVA_HOME"
}
print_home_of_ibmjava8() {
echo "$IBMJAVA8_JAVA_HOME"
}
print_home_of_openjdk8_openj9() {
echo "$OPENJDK8_OPENJ9_JAVA_HOME"
}
warn_sunjdk6_eol() {
echo "Sun/Oracle JDK 6 is EOL since November 2012, and is no longer supported. Please consider upgrading..." >&2
}
warn_jdk_not_known() {
echo "Sorry, but JDK '$1' is not known." >&2
}
warn_gcj_user() {
echo "We do not support GCJ. I mean, come on. Are you Richard Stallman?" >&2
}
switch_jdk() {
case "${1:-default}" in
*gcj*)
warn_gcj_user
false
;;
openjdk6 | openjdk1.6 | openjdk1.6.0 | jdk6 | 1.6.0 | 1.6 | 6.0)
switch_to_openjdk6
;;
openjdk7 | jdk7 | 1.7.0 | 1.7 | 7.0)
switch_to_openjdk7
;;
openjdk8 | jdk8 | 1.8.0 | 1.8 | 8.0)
switch_to_openjdk8
;;
oraclejdk6 | oraclejdk1.6 | oraclejdk1.6.0 | oracle6 | oracle1.6.0 | oracle6.0 | sunjdk6 | sun6)
warn_sunjdk6_eol
false
;;
oraclejdk7 | oraclejdk1.7 | oraclejdk1.7.0 | oracle7 | oracle1.7.0 | oracle7.0 | oracle | sunjdk7 | sun7 | sun)
switch_to_oraclejdk7
;;
oraclejdk8 | oraclejdk1.8 | oraclejdk1.8.0 | oracle8 | oracle1.8.0 | oracle8.0)
switch_to_oraclejdk8
;;
oraclejdk9 | oraclejdk1.9 | oraclejdk1.9.0 | oracle9 | oracle1.9.0 | oracle9.0)
switch_to_oraclejdk9
;;
oraclejdk10 | oraclejdk1.10 | oraclejdk1.10.0 | oracle10 | oracle1.10.0 | oracle10.0)
switch_to_oraclejdk10
;;
ibmjava8 | ibmjava1.8 | ibmjava1.8.0 | ibmjdk8 | ibmjdk1.8 | ibmjdk1.8.0 | ibm8 | ibm1.8.0 | ibm8.0)
switch_to_ibmjava8
;;
openjdk8j9 | openjdk8openj9 | openjdk8withopenj9)
switch_to_openjdk8_openj9
;;
default)
"switch_to_${JDK_SWITCHER_DEFAULT}"
;;
*)
warn_jdk_not_known "$1"
false
;;
esac
}
print_java_home() {
typeset JDK
JDK="$1"
case "$JDK" in
*gcj*)
warn_gcj_user
;;
openjdk6 | openjdk1.6 | openjdk1.6.0 | jdk6 | 1.6.0 | 1.6 | 6.0)
print_home_of_openjdk6
;;
openjdk7 | jdk7 | 1.7.0 | 1.7 | 7.0)
print_home_of_openjdk7
;;
openjdk8 | jdk8 | 1.8.0 | 1.8 | 8.0)
print_home_of_openjdk8
;;
oraclejdk6 | oraclejdk1.6 | oraclejdk1.6.0 | oracle6 | oracle1.6.0 | oracle6.0 | sunjdk6 | sun6)
warn_sunjdk6_eol
;;
oraclejdk7 | oraclejdk1.7 | oraclejdk1.7.0 | oracle7 | oracle1.7.0 | oracle7.0 | oracle | sunjdk7 | sun7 | sun)
print_home_of_oraclejdk7
;;
oraclejdk8 | oraclejdk1.8 | oraclejdk1.8.0 | oracle8 | oracle1.8.0 | oracle8.0)
print_home_of_oraclejdk8
;;
oraclejdk9 | oraclejdk1.9 | oraclejdk1.9.0 | oracle9 | oracle1.9.0 | oracle9.0)
print_home_of_oraclejdk9
;;
oraclejdk10 | oraclejdk1.10 | oraclejdk1.10.0 | oracle10 | oracle1.10.0 | oracle10.0)
print_home_of_oraclejdk10
;;
ibmjava8 | ibmjava1.8 | ibmjava1.8.0 | ibmjdk8 | ibmjdk1.8 | ibmjdk1.8.0 | ibm8 | ibm1.8.0 | ibm8.0)
print_home_of_ibmjava8
;;
openjdk8j9 | openjdk8openj9 | openjdk8withopenj9)
print_home_of_openjdk8_openj9
;;
default)
"print_home_of_${JDK_SWITCHER_DEFAULT}"
;;
*)
warn_jdk_not_known "$JDK"
;;
esac
}
jdk_switcher() {
typeset COMMAND JDK
COMMAND="$1"
JDK="$2"
case "$COMMAND" in
use)
switch_jdk "$JDK"
;;
home)
print_java_home "$JDK"
;;
*)
echo "Usage: jdk_switcher {use|home} [ JDK version ]" >&2
false
;;
esac
return $?
}