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#!/bin/bash
export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
export LC_ALL=C
NETDATA_CONFIG_DIR="${NETDATA_CONFIG_DIR-/etc/netdata}"
CONFIG="${NETDATA_CONFIG_DIR}/cgroups-names.conf"
CGROUP="${1}"
NAME=
if [ -z "${CGROUP}" ]
then
echo >&2 "${0}: called without a cgroup name. Nothing to do."
exit 1
fi
if [ -f "${CONFIG}" ]
then
NAME="$(cat "${CONFIG}" | grep "^${CGROUP} " | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
if [ -z "${NAME}" ]
then
echo >&2 "${0}: cannot find cgroup '${CGROUP}' in '${CONFIG}'."
fi
#else
# echo >&2 "${0}: configuration file '${CONFIG}' is not available."
fi
function get_name_classic {
DOCKERID=$1
echo >&2 "Running command: docker ps --filter=id=\"${DOCKERID}\" --format=\"{{.Names}}\""
NAME="$( docker ps --filter=id="${DOCKERID}" --format="{{.Names}}" )"
}
function get_name_api {
DOCKERID=$1
if [ ! -S "/var/run/docker.sock" ]
then
echo >&2 "Can't find /var/run/docker.sock"
return
fi
echo >&2 "Running API command: /containers/${DOCKERID}/json"
JSON=$(echo -e "GET /containers/${DOCKERID}/json HTTP/1.0\r\n" | nc -U /var/run/docker.sock | egrep '^{.*')
NAME=$(echo $JSON | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
}
if [ -z "${NAME}" ]
then
if [[ "${CGROUP}" =~ ^.*docker[-/\.][a-fA-F0-9]+[-\.]?.*$ ]]
then
DOCKERID="$( echo "${CGROUP}" | sed "s|^.*docker[-/]\([a-fA-F0-9]\+\)[-\.]\?.*$|\1|" )"
if [ ! -z "${DOCKERID}" -a \( ${#DOCKERID} -eq 64 -o ${#DOCKERID} -eq 12 \) ]
then
if hash docker 2>/dev/null
then
get_name_classic $DOCKERID
else
get_name_api $DOCKERID
fi
if [ -z "${NAME}" ]
then
echo >&2 "Cannot find the name of docker container '${DOCKERID}'"
NAME="${DOCKERID:0:12}"
else
echo >&2 "Docker container '${DOCKERID}' is named '${NAME}'"
fi
fi
fi
[ -z "${NAME}" ] && NAME="${CGROUP}"
[ ${#NAME} -gt 50 ] && NAME="${NAME:0:50}"
fi
echo >&2 "${0}: cgroup '${CGROUP}' is called '${NAME}'"
echo "${NAME}"
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