init-hbp-solr-home
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	#!/bin/bash
	#
	# A helper script to initialise a custom SOLR_HOME.
	# For example:
	#
	# mkdir mysolrhome
	# sudo chown 8983:8983 mysolrhome
	# docker run -it -v $PWD/mysolrhome:/mysolrhome -e SOLR_HOME=/mysolrhome -e INIT_SOLR_HOME=yes hbp-solr
	#

	set -e

	if [[ "$VERBOSE" = "yes" ]]; then
	set -x
	fi

	# Normally SOLR_HOME is not set, and Solr will use /opt/solr/server/solr/
	# If it's not set, then this script has no relevance.
	if [[ -z $SOLR_HOME ]]; then
	exit
	fi

	# require an explicit opt-in. Without this, you can use the SOLR_HOME and
	# volumes, and configure it from the command-line or a docker-entrypoint-initdb.d
	# script
	if [[ "$INIT_SOLR_HOME" != "yes" ]]; then
	exit
	fi

	# check the directory exists.
	if [ ! -d "$SOLR_HOME" ]; then
	echo "SOLR_HOME $SOLR_HOME does not exist"
	exit 1
	fi

	# check for existing Solr
	if [ -f "$SOLR_HOME/solr.xml" ]; then
	exit
	fi

	# refuse to use non-empty directories, which are likely a misconfiguration
	if [ "$(find "$SOLR_HOME" -mindepth 1 ! -name lost+found \| wc -l)" != '0' ]; then
	echo "SOLR_HOME directory $SOLR_HOME is not empty; refusing to create a solr home."
	exit 1
	fi

	# populate with default solr home contents
	echo "copying solr home contents to $SOLR_HOME"
	cp -R /opt/hbp-lucene-solr/server/solr/* "$SOLR_HOME"