fixed a bug that prevented dispatching alarms to multiple email recipients

[netdata.git] / plugins.d / cgroup-name.sh

diff --git a/plugins.d/cgroup-name.sh b/plugins.d/cgroup-name.sh
index 4bb963dd885d2cbd93c1ee31392fe32a1a54be6c..1c6f564b4c820dab31282939b63bb9ddcbd671c5 100755 (executable)
--- a/plugins.d/cgroup-name.sh
+++ b/plugins.d/cgroup-name.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
 export LC_ALL=C
@@ -9,44 +9,69 @@ CGROUP="${1}"
 NAME=
 
 if [ -z "${CGROUP}" ]
-       then
-       echo >&2 "${0}: called without a cgroup name. Nothing to do."
-       exit 1
+    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
+    then
+    NAME="$(grep "^${CGROUP} " "${CONFIG}" | sed "s/[[:space:]]\+/ /g" | cut -d ' ' -f 2)"
+    if [ -z "${NAME}" ]
+        then
+        echo >&2 "${0}: cannot find cgroup '${CGROUP}' in '${CONFIG}'."
+    fi
 #else
-#      echo >&2 "${0}: configuration file '${CONFIG}' is not available."
+#   echo >&2 "${0}: configuration file '${CONFIG}' is not available."
 fi
 
+function get_name_classic {
+    local DOCKERID="$1"
+    echo >&2 "Running command: docker ps --filter=id=\"${DOCKERID}\" --format=\"{{.Names}}\""
+    NAME="$( docker ps --filter=id="${DOCKERID}" --format="{{.Names}}" )"
+    return 0
+}
+
+function get_name_api {
+    local DOCKERID="$1"
+    if [ ! -S "/var/run/docker.sock" ]
+        then
+        echo >&2 "Can't find /var/run/docker.sock"
+        return 1
+    fi
+    echo >&2 "Running API command: /containers/${DOCKERID}/json"
+    JSON=$(echo -e "GET /containers/${DOCKERID}/json HTTP/1.0\r\n" | nc -U /var/run/docker.sock | egrep '^{.*')
+    NAME=$(echo $JSON | jq -r .Name,.Config.Hostname | grep -v null | head -n1 | sed 's|^/||')
+    return 0
+}
+
 if [ -z "${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
-                       echo >&2 "Running command: docker ps --filter=id=\"${DOCKERID}\" --format=\"{{.Names}}\""
-                       NAME="$( docker ps --filter=id="${DOCKERID}" --format="{{.Names}}" )"
-                       if [ -z "${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}"
+    then
+    if [[ "${CGROUP}" =~ ^.*docker[-_/\.][a-fA-F0-9]+[-_\.]?.*$ ]]
+        then
+        DOCKERID="$( echo "${CGROUP}" | sed "s|^.*docker[-_/]\([a-fA-F0-9]\+\)[-_\.]\?.*$|\1|" )"
+        # echo "DOCKERID=${DOCKERID}"
+
+        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 || get_name_classic $DOCKERID
+            fi
+            if [ -z "${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}"
+    [ ${#NAME} -gt 100 ] && NAME="${NAME:0:100}"
 fi
 
 echo >&2 "${0}: cgroup '${CGROUP}' is called '${NAME}'"