#!/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 -e

getConfPath()
{
    cluster_conf_base=/tmp/conf/druid/cluster
    case "$1" in
    _common) echo $cluster_conf_base/_common ;;
    historical) echo $cluster_conf_base/data/historical ;;
    middleManager) echo $cluster_conf_base/data/middleManager ;;
    coordinator) echo $cluster_conf_base/master/coordinator ;;
    broker) echo $cluster_conf_base/query/broker ;;
    router) echo $cluster_conf_base/query/router ;;
    overlord) echo $cluster_conf_base/master/overlord ;;
    esac
}

# Delete the old key (if existing) and append new key=value
setKey()
{
    service="$1"
    key="$2"
    value="$3"
    service_conf=$(getConfPath $service)/runtime.properties
    # Delete from all
    sed -ri "/$key=/d" $COMMON_CONF_DIR/common.runtime.properties
    [ -f $service_conf ] && sed -ri "/$key=/d" $service_conf
    [ -f $service_conf ] && echo "$key=$value" >>$service_conf
    [ -f $service_conf ] || echo "$key=$value" >>$COMMON_CONF_DIR/common.runtime.properties

    echo "Setting $key=$value in $service_conf"
}

setupConfig()
{
  echo "$(date -Is) configuring service $DRUID_SERVICE"

  # We put all the config in /tmp/conf to allow for a
  # read-only root filesystem
  mkdir -p /tmp/conf/druid

  COMMON_CONF_DIR=$(getConfPath _common)
  SERVICE_CONF_DIR=$(getConfPath ${DRUID_SERVICE})

  mkdir -p $COMMON_CONF_DIR
  mkdir -p $SERVICE_CONF_DIR
  touch $COMMON_CONF_DIR/common.runtime.properties
  touch $SERVICE_CONF_DIR/runtime.properties

  setKey $DRUID_SERVICE druid.host $(resolveip -s $HOSTNAME)
  setKey $DRUID_SERVICE druid.worker.ip $(resolveip -s $HOSTNAME)

  # Write out all the environment variables starting with druid_ to druid service config file
  # This will replace _ with . in the key
  env | grep ^druid_ | while read evar;
  do
      # Can't use IFS='=' to parse since var might have = in it (e.g. password)
      val=$(echo "$evar" | sed -e 's?[^=]*=??')
      var=$(echo "$evar" | sed -e 's?^\([^=]*\)=.*?\1?g' -e 's?_?.?g')
      setKey $DRUID_SERVICE "$var" "$val"
  done
}

setupData()
{
  # The "query" and "security" test groups require data to be setup before running the tests.
  # In particular, they requires segments to be download from a pre-existing s3 bucket.
  # This is done by using the loadSpec put into metadatastore and s3 credientials set below.
  if [ "$DRUID_INTEGRATION_TEST_GROUP" = "query" ] || [ "$DRUID_INTEGRATION_TEST_GROUP" = "security" ]; then
    # touch is needed because OverlayFS's copy-up operation breaks POSIX standards. See https://github.com/docker/for-linux/issues/72.
    find /var/lib/mysql -type f -exec touch {} \; && service mysql start \
      && cat /test-data/${DRUID_INTEGRATION_TEST_GROUP}-sample-data.sql | mysql -u root druid && /etc/init.d/mysql stop
    # below s3 credentials needed to access the pre-existing s3 bucket
    setKey $DRUID_SERVICE druid.s3.accessKey AKIAJI7DG7CDECGBQ6NA
    setKey $DRUID_SERVICE druid.s3.secretKey OBaLISDFjKLajSTrJ53JoTtzTZLjPlRePcwa+Pjv
    setKey $DRUID_SERVICE druid.extensions.loadList [\"druid-s3-extensions\"]
    # The region of the sample data s3 blobs needed for these test groups
    export AWS_REGION=us-east-1
  fi
}