#!/usr/bin/env bash
#
# Copyright 2020 Confluent Inc.
#
# Licensed 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.

. /etc/confluent/docker/bash-config

export KAFKA_DATA_DIRS=${KAFKA_DATA_DIRS:-"/var/lib/kafka/data"}
echo "===> Check if $KAFKA_DATA_DIRS is writable ..."
ub path "$KAFKA_DATA_DIRS" writable

# KRaft required step: Format the storage directory with provided cluster ID unless it already exists.
if [[ -n "${KAFKA_PROCESS_ROLES-}" ]]
then
    echo "===> Using provided cluster id $CLUSTER_ID ..."

    # A bit of a hack to not error out if the storage is already formatted.  Need storage-tool to support this
    result=$(kafka-storage format --cluster-id=$CLUSTER_ID -c /etc/kafka/kafka.properties 2>&1) || \
        echo $result | grep -i "already formatted" || \
        { echo $result && (exit 1) }
fi
