#!/bin/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 -x

cfg=
version=
log=/var/log/cloud.log

log_it() {
    logger -t cloud "$*"
    echo "$(date) : $*" >> $log
}

while getopts 'c:' OPTION; do
    case $OPTION in
        c) cfg="$OPTARG" ;;
esac; done

export DEFER_CONFIG=true
cat $cfg | while read line; do
    #comment
    if [[ $line == \#* ]]; then
        continue

    elif [ "$line" == "<version>" ]; then
        read line
        version=$line
        log_it "VR config: configuation format version $version"
        #skip </version>
        read line

    elif [ "$line" == "<script>" ]; then
        read line
        log_it "VR config: executing: $line"
        eval $line >> $log 2>&1
        if [ $? -ne 0 ]; then
            log_it "VR config: executing failed: $line"
            # expose error info to mgmt server
            echo "VR config: execution failed: \"$line\", check $log in VR for details " 1>&2
            exit 1
        fi
        #skip </script>
        read line
        log_it "VR config: execution success "

    elif [ "$line" == "<file>" ]; then
        read line
        file=$line
        log_it "VR config: creating file: $file"
        rm -f $file
        while read -r line; do
            if [ "$line" == "</file>" ]; then
                break
            fi
            echo $line >> $file
        done
        log_it "VR config: create file success"

    fi

done 

# archive the configuration file
mv $cfg /var/cache/cloud/processed/

unset DEFER_CONFIG
# trigger finish_config()
if [ -f /etc/cloudstack/dhcpentry.json ]; then
    /opt/cloud/bin/configure.py vm_dhcp_entry.json
fi
if [ -f /etc/cloudstack/vmdata.json ]; then
    /opt/cloud/bin/configure.py vm_metadata.json
fi

# Flush kernel conntrack table
log_it "VR config: Flushing conntrack table"
conntrackd -d 2> /dev/null
if [ $? -eq 0 ]; then
    conntrackd -F
    conntrackd -k
else
    conntrackd -F
fi
log_it "VR config: Flushing conntrack table completed"

exit 0