mirror of https://github.com/apache/cassandra
67 lines
2.8 KiB
Bash
Executable File
67 lines
2.8 KiB
Bash
Executable File
#!/bin/bash -e
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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################################
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#
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# Prep
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#
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################################
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# variables, with defaults
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[ "x${CASSANDRA_DIR}" != "x" ] || { CASSANDRA_DIR="$(pwd)"; }
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[ -d "${CASSANDRA_DIR}" ] || { echo >&2 "Directory ${CASSANDRA_DIR} must exist"; exit 1; }
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# pre-conditions
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[ -f "${CASSANDRA_DIR}/build.xml" ] || { echo >&2 "${CASSANDRA_DIR}/build.xml must exist"; exit 1; }
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java_version_default=`grep 'property\s*name="java.default"' ${CASSANDRA_DIR}/build.xml |sed -ne 's/.*value="\([^"]*\)".*/\1/p'`
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java_version_supported=`grep 'property\s*name="java.supported"' ${CASSANDRA_DIR}/build.xml |sed -ne 's/.*value="\([^"]*\)".*/\1/p'`
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if [ "$1" == "-h" ]; then
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echo "$0 [-h] [<java version>]"
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echo " if Java version is not set, it is set to ${java_version_default} by default, valid ${java_version_supported}"
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echo
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echo " this script is used internally by other scripts in the same directory to ensure the correct java version is used inside the docker container"
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exit 1
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fi
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# arguments
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java_version=$1
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[ "x${java_version}" != "x" ] || java_version="${java_version_default}"
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regx_java_version="(${java_version_supported//,/|})"
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if [[ ! "$java_version" =~ $regx_java_version ]]; then
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echo "Error: Java version is not in ${java_version_supported}, it is set to $java_version"
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exit 1
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fi
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################################
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#
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# Main
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#
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################################
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if grep "^ID=" /etc/os-release | grep -q 'debian\|ubuntu' ; then
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sudo update-alternatives --set java /usr/lib/jvm/java-${java_version}-openjdk-$(dpkg --print-architecture)/bin/java
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sudo update-alternatives --set javac /usr/lib/jvm/java-${java_version}-openjdk-$(dpkg --print-architecture)/bin/javac
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else
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sudo alternatives --set java $(alternatives --display java | grep "family java-${java_version}-openjdk" | cut -d' ' -f1)
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sudo alternatives --set javac $(alternatives --display javac | grep "family java-${java_version}-openjdk" | cut -d' ' -f1)
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fi
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export JAVA_HOME=$(readlink -f /usr/bin/javac | sed "s:/bin/javac::")
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echo "Using Java ${java_version}"
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