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#!/bin/sh

#  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.

# Generate a minimal HTTPD proxy balancer configuration
here=`echo "import os; print os.path.realpath('$0')" | python`; here=`dirname $here`
mkdir -p $1
root=`echo "import os; print os.path.realpath('$1')" | python`

bal=$2
if [ "$bal" = "" ]; then
    bal="cluster"
fi
loc=$3
if [ "$loc" = "" ]; then
    loc="/"
fi

cat >>$root/conf/vhost.conf <<EOF
# Generated by: proxy-pass-conf $*
# Enable load balancing
ProxyPass $loc balancer://$bal/

<Proxy balancer://$bal>
Require all granted
ProxySet lbmethod=byrequests
</Proxy>

<Location $loc>
RequestHeader set X-Forwarded-HTTPS %{HTTPS}s
RequestHeader set X-Forwarded-Port %{SERVER_PORT}s
</Location>

EOF