#!/usr/bin/env bash
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -ex

if [ -z `which javac` ]; then
    apt-get -y update
    apt-get install -y software-properties-common python-software-properties
    add-apt-repository -y ppa:webupd8team/java
    apt-get -y update

    # Try to share cache. See Vagrantfile for details
    mkdir -p /var/cache/oracle-jdk7-installer
    if [ -e "/tmp/oracle-jdk7-installer-cache/" ]; then
        find /tmp/oracle-jdk7-installer-cache/ -not -empty -exec cp '{}' /var/cache/oracle-jdk7-installer/ \;
    fi
    if [ ! -e "/var/cache/oracle-jdk7-installer/jdk-7u80-linux-x64.tar.gz" ]; then
        # Grab a copy of the JDK since it has moved and original downloader won't work
        curl -s -L "https://s3-us-west-2.amazonaws.com/kafka-packages/jdk-7u80-linux-x64.tar.gz" -o /var/cache/oracle-jdk7-installer/jdk-7u80-linux-x64.tar.gz
    fi

    /bin/echo debconf shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections

    # oracle-javaX-installer runs wget with a dot progress indicator which ends up
    # as one line per dot in the build logs.
    # To avoid this noise we redirect all output to a file that we only show if apt-get fails.
    echo "Installing JDK..."
    if ! apt-get -y install oracle-java7-installer oracle-java7-set-default >/tmp/jdk_install.log 2>&1 ; then
        cat /tmp/jdk_install.log
        echo "ERROR: JDK install failed"
        exit 1
    fi
    echo "JDK installed: $(javac -version 2>&1)"

    if [ -e "/tmp/oracle-jdk7-installer-cache/" ]; then
        cp -R /var/cache/oracle-jdk7-installer/* /tmp/oracle-jdk7-installer-cache
    fi
fi

chmod a+rw /opt
if [ -h /opt/kafka-dev ]; then
    # reset symlink
    rm /opt/kafka-dev
fi
ln -s /vagrant /opt/kafka-dev

# Verification to catch provisioning errors.
if [[ ! -x /opt/kafka-dev/bin/kafka-run-class.sh ]]; then
    echo "ERROR: kafka-run-class.sh not found/executable in /opt/kafka-dev/bin"
    find /opt/kafka-dev
    ls -la /opt/kafka-dev/bin/kafka-run-class.sh || true
    exit 1
fi



get_kafka() {
    version=$1
    scala_version=$2

    kafka_dir=/opt/kafka-$version
    url=https://s3-us-west-2.amazonaws.com/kafka-packages-$version/kafka_$scala_version-$version.tgz
    if [ ! -d /opt/kafka-$version ]; then
        pushd /tmp
        curl -O $url
        file_tgz=`basename $url`
        tar -xzf $file_tgz
        rm -rf $file_tgz

        file=`basename $file_tgz .tgz`
        mv $file $kafka_dir
        popd
    fi
}

# Test multiple Scala versions
get_kafka 0.8.2.2 2.10
chmod a+rw /opt/kafka-0.8.2.2
get_kafka 0.9.0.1 2.11
chmod a+rw /opt/kafka-0.9.0.1
get_kafka 0.10.0.1 2.11
chmod a+rw /opt/kafka-0.10.0.1
get_kafka 0.10.1.1 2.11
chmod a+rw /opt/kafka-0.10.1.1
get_kafka 0.10.2.1 2.11
chmod a+rw /opt/kafka-0.10.2.1


# For EC2 nodes, we want to use /mnt, which should have the local disk. On local
# VMs, we can just create it if it doesn't exist and use it like we'd use
# /tmp. Eventually, we'd like to also support more directories, e.g. when EC2
# instances have multiple local disks.
if [ ! -e /mnt ]; then
    mkdir /mnt
fi
chmod a+rwx /mnt

# Run ntpdate once to sync to ntp servers
# use -u option to avoid port collision in case ntp daemon is already running
ntpdate -u pool.ntp.org
# Install ntp daemon - it will automatically start on boot
apt-get -y install ntp