#!/usr/bin/env 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 -eo pipefail

curdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"

if [[ "$(uname -s)" == 'Darwin' ]] && command -v brew &>/dev/null; then
    PATH="$(brew --prefix)/opt/gnu-getopt/bin:${PATH}"
    export PATH
fi

OPTS="$(getopt \
    -n "$0" \
    -o '' \
    -l 'daemon' \
    -- "$@")"

eval set -- "${OPTS}"

RUN_DAEMON=0
RUN_IN_AWS=0
while true; do
    case "$1" in
    --daemon)
        RUN_DAEMON=1
        shift
        ;;
    --aws)
        RUN_IN_AWS=1
        shift
        ;;
    --)
        shift
        break
        ;;
    *)
        echo "Internal error"
        exit 1
        ;;
    esac
done

DORIS_HOME="$(
    cd "${curdir}/.."
    pwd
)"
export DORIS_HOME

if [[ "$(uname -s)" != 'Darwin' ]]; then
    MAX_MAP_COUNT="$(cat /proc/sys/vm/max_map_count)"
    if [[ "${MAX_MAP_COUNT}" -lt 2000000 ]]; then
        echo "Please set vm.max_map_count to be 2000000 under root using 'sysctl -w vm.max_map_count=2000000'."
        exit 1
    fi
fi

# add libs to CLASSPATH
for f in "${DORIS_HOME}/lib"/*.jar; do
    if [[ -z "${DORIS_JNI_CLASSPATH_PARAMETER}" ]]; then
        export DORIS_JNI_CLASSPATH_PARAMETER="${f}"
    else
        export DORIS_JNI_CLASSPATH_PARAMETER="${f}:${DORIS_JNI_CLASSPATH_PARAMETER}"
    fi
done
# DORIS_JNI_CLASSPATH_PARAMETER is used to configure additional jar path to jvm. e.g. -Djava.class.path=$DORIS_HOME/lib/java-udf.jar
export DORIS_JNI_CLASSPATH_PARAMETER="-Djava.class.path=${DORIS_JNI_CLASSPATH_PARAMETER}"

jdk_version() {
    local java_cmd="${1}"
    local result
    local IFS=$'\n'

    if [[ -z "${java_cmd}" ]]; then
        result=no_java
        return 1
    else
        local version
        # remove \r for Cygwin
        version="$("${java_cmd}" -Xms32M -Xmx32M -version 2>&1 | tr '\r' '\n' | grep version | awk '{print $3}')"
        version="${version//\"/}"
        if [[ "${version}" =~ ^1\. ]]; then
            result="$(echo "${version}" | awk -F '.' '{print $2}')"
        else
            result="$(echo "${version}" | awk -F '.' '{print $1}')"
        fi
    fi
    echo "${result}"
    return 0
}

# export env variables from be.conf
#
# UDF_RUNTIME_DIR
# LOG_DIR
# PID_DIR
export UDF_RUNTIME_DIR="${DORIS_HOME}/lib/udf-runtime"
export LOG_DIR="${DORIS_HOME}/log"
PID_DIR="$(
    cd "${curdir}"
    pwd
)"
export PID_DIR

# set odbc conf path
export ODBCSYSINI="${DORIS_HOME}/conf"

# support utf8 for oracle database
export NLS_LANG='AMERICAN_AMERICA.AL32UTF8'

#filter known leak for lsan.
export LSAN_OPTIONS="suppressions=${DORIS_HOME}/conf/asan_suppr.conf"

while read -r line; do
    envline="$(echo "${line}" |
        sed 's/[[:blank:]]*=[[:blank:]]*/=/g' |
        sed 's/^[[:blank:]]*//g' |
        grep -E "^[[:upper:]]([[:upper:]]|_|[[:digit:]])*=" ||
        true)"
    envline="$(eval "echo ${envline}")"
    if [[ "${envline}" == *"="* ]]; then
        eval 'export "${envline}"'
    fi
done <"${DORIS_HOME}/conf/be.conf"

if [[ -e "${DORIS_HOME}/bin/palo_env.sh" ]]; then
    # shellcheck disable=1091
    source "${DORIS_HOME}/bin/palo_env.sh"
fi

if [[ -z "${JAVA_HOME}" ]]; then
    echo "The JAVA_HOME environment variable is not defined correctly"
    echo "This environment variable is needed to run this program"
    echo "NB: JAVA_HOME should point to a JDK not a JRE"
    echo "You can set it in be.conf"
    exit 1
fi

if [[ ! -d "${LOG_DIR}" ]]; then
    mkdir -p "${LOG_DIR}"
fi

if [[ ! -d "${UDF_RUNTIME_DIR}" ]]; then
    mkdir -p "${UDF_RUNTIME_DIR}"
fi

rm -f "${UDF_RUNTIME_DIR}"/*

pidfile="${PID_DIR}/be.pid"

if [[ -f "${pidfile}" ]]; then
    if kill -0 "$(cat "${pidfile}")" >/dev/null 2>&1; then
        echo "Backend running as process $(cat "${pidfile}"). Stop it first."
        exit 1
    else
        rm "${pidfile}"
    fi
fi

chmod 755 "${DORIS_HOME}/lib/doris_be"
echo "start time: $(date)" >>"${LOG_DIR}/be.out"

if [[ ! -f '/bin/limit3' ]]; then
    LIMIT=''
else
    LIMIT="/bin/limit3 -c 0 -n 65536"
fi

## If you are not running in aws cloud, disable this env since https://github.com/aws/aws-sdk-cpp/issues/1410.
if [[ "${RUN_IN_AWS}" -eq 0 ]]; then
    export AWS_EC2_METADATA_DISABLED=true
fi

## set asan and ubsan env to generate core file
export ASAN_OPTIONS=symbolize=1:abort_on_error=1:disable_coredump=0:unmap_shadow_on_exit=1
export UBSAN_OPTIONS=print_stacktrace=1

## set TCMALLOC_HEAP_LIMIT_MB to limit memory used by tcmalloc
set_tcmalloc_heap_limit() {
    local total_mem_mb
    local mem_limit_str

    if [[ "$(uname -s)" != 'Darwin' ]]; then
        total_mem_mb="$(free -m | grep Mem | awk '{print $2}')"
    else
        total_mem_mb="$(($(sysctl -a hw.memsize | awk '{print $NF}') / 1024))"
    fi
    mem_limit_str=$(grep ^mem_limit "${DORIS_HOME}"/conf/be.conf)
    local digits_unit=${mem_limit_str##*=}
    digits_unit="${digits_unit#"${digits_unit%%[![:space:]]*}"}"
    digits_unit="${digits_unit%"${digits_unit##*[![:space:]]}"}"
    local digits=${digits_unit%%[^[:digit:]]*}
    local unit=${digits_unit##*[[:digit:] ]}

    mem_limit_mb=0
    case ${unit} in
    t | T) mem_limit_mb=$((digits * 1024 * 1024)) ;;
    g | G) mem_limit_mb=$((digits * 1024)) ;;
    m | M) mem_limit_mb=$((digits)) ;;
    k | K) mem_limit_mb=$((digits / 1024)) ;;
    %) mem_limit_mb=$((total_mem_mb * digits / 100)) ;;
    *) mem_limit_mb=$((digits / 1024 / 1024 / 1024)) ;;
    esac

    if [[ "${mem_limit_mb}" -eq 0 ]]; then
        mem_limit_mb=$((total_mem_mb * 90 / 100))
    fi

    if [[ "${mem_limit_mb}" -gt "${total_mem_mb}" ]]; then
        echo "mem_limit is larger than whole memory of the server. ${mem_limit_mb} > ${total_mem_mb}."
        return 1
    fi
    export TCMALLOC_HEAP_LIMIT_MB=${mem_limit_mb}
}

# set_tcmalloc_heap_limit || exit 1

## set hdfs conf
if [[ -f "${DORIS_HOME}/conf/hdfs-site.xml" ]]; then
    export LIBHDFS3_CONF="${DORIS_HOME}/conf/hdfs-site.xml"
fi

# see https://github.com/jemalloc/jemalloc/issues/2366
export JEMALLOC_CONF="percpu_arena:percpu,background_thread:true,metadata_thp:auto,muzzy_decay_ms:30000,dirty_decay_ms:30000,oversize_threshold:0,lg_tcache_max:16,prof:true,prof_prefix:jeprof.out"

if [[ "${RUN_DAEMON}" -eq 1 ]]; then
    nohup ${LIMIT:+${LIMIT}} "${DORIS_HOME}/lib/doris_be" "$@" >>"${LOG_DIR}/be.out" 2>&1 </dev/null &
else
    export DORIS_LOG_TO_STDERR=1
    ${LIMIT:+${LIMIT}} "${DORIS_HOME}/lib/doris_be" "$@" 2>&1 </dev/null
fi