#!/bin/sh
set -eu

ROOT_DIR="$(cd "$(dirname "$(readlink "$0" || echo "$0")")"/..; pwd -P)"

echo "Running node dump in ${ROOT_DIR}"

cd "${ROOT_DIR}"

DUMP="log/node_dump_$(date +"%Y%m%d_%H%M%S").tar.gz"
CONF_DUMP="log/conf.dump"
SYSINFO="log/sysinfo.txt"

LOG_MAX_AGE_DAYS=3

collect() {
    echo "========================================================"
    echo "    $*"
    echo "========================================================"
    eval "$*" || echo "Unavailable"
    echo
}

show_help() {
    echo "Collect information about the EMQ X node

USAGE:

    bin/node_dump [-a DAYS]

OPTIONS:

    -a n  Set maximum age of collected log files in days (3 by default)"
    exit 1
}

while getopts "a:h" opt; do
     case "${opt}" in
        a) LOG_MAX_AGE_DAYS="${OPTARG}" ;;
        h) show_help ;;
        *) ;;
    esac
done

# Collect system info:
{
    collect bin/emqx_ctl broker
    collect bin/emqx eval "'emqx_node_dump:sys_info()'"

    collect uname -a
    collect uptime
    collect free
    collect netstat -tnl

    collect bin/emqx_ctl plugins list
    collect bin/emqx_ctl modules list

    collect bin/emqx_ctl vm all
    collect bin/emqx_ctl listeners
} > "${SYSINFO}"

# Collect information about the configuration:
{
    collect bin/emqx eval "'emqx_node_dump:app_env_dump()'"
} > "${CONF_DUMP}"

# Pack files
{
    find log -mtime -"${LOG_MAX_AGE_DAYS}" \( -name '*.log.*' -or -name 'run_erl.log*' \)
    echo "${SYSINFO}"
    echo "${CONF_DUMP}"
} | tar czf "${DUMP}" -T -

## Cleanup:
rm "${SYSINFO}"
#rm "${CONF_DUMP}" # Keep it for inspection

echo "Created a node dump ${DUMP}"
echo
echo "WARNING: this script tries to obfuscate secrets, but make sure to
inspect log/conf.dump file manually before uploading the node dump
to a public location."