scripts/service-openmano.sh

   1 #!/bin/bash
   2
   3 ##
   4 # Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
   5 # This file is part of openmano
   6 # All Rights Reserved.
   7 #
   8 # Licensed under the Apache License, Version 2.0 (the "License"); you may
   9 # not use this file except in compliance with the License. You may obtain
  10 # a copy of the License at
  11 #
  12 #         http://www.apache.org/licenses/LICENSE-2.0
  13 #
  14 # Unless required by applicable law or agreed to in writing, software
  15 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  16 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  17 # License for the specific language governing permissions and limitations
  18 # under the License.
  19 #
  20 # For those usages not covered by the Apache License, Version 2.0 please
  21 # contact with: nfvlabs@tid.es
  22 ##
  23
  24
  25 #launch openmano inside a screen.
  26 #or call service if it is installed on systemd
  27
  28
  29 DIRNAME=$(readlink -f ${BASH_SOURCE[0]})
  30 DIRNAME=$(dirname $DIRNAME )
  31 DIR_OM=$(dirname $DIRNAME )
  32
  33 function usage(){
  34     echo -e "Usage: $0 [openmano/mano] start|stop|restart|status"
  35     echo -e "  Launch|Removes|Restart|Getstatus openmano on a screen/service"
  36     echo -e "    -n --screen-name NAME : name of screen to launch openmano (default mano or service)"
  37     echo -e "    -h --help: shows this help"
  38     echo -e "    -- PARAMS use to separate PARAMS that will be send to the service. e.g. -pPORT -PADMINPORT --dbname=DDBB"
  39 }
  40
  41
  42 function kill_pid(){
  43     #send TERM signal and wait 5 seconds and send KILL signal ir still running
  44     #PARAMS: $1: PID of process to terminate
  45     kill $1 #send TERM signal
  46     WAIT=5
  47     while [ $WAIT -gt 0 ] && ps -o pid -U $USER -u $USER | grep -q $1
  48     do
  49         sleep 1
  50         WAIT=$((WAIT-1))
  51         [ $WAIT -eq 0 ] && echo -n "sending SIGKILL...  " &&  kill -9 $1  #kill when count reach 0
  52     done
  53     echo "done"
  54 }
  55
  56 #process options
  57 source ${DIRNAME}/get-options.sh "screen-name:n= help:h --" $* || exit 1
  58
  59 #help
  60 [ -n "$option_help" ] && usage && exit 0
  61
  62
  63 #obtain parameters
  64 om_list=""
  65 #om_action="start"  #uncoment to get a default action
  66 action_list=""
  67 om_params="$option__"
  68
  69 for param in $params
  70 do
  71     [ "$param" == "start" -o "$param" == "stop"  -o "$param" == "restart" -o "$param" == "status" ] && om_action=$param  && continue
  72     [ "$param" == "openmano" -o "$param" == "mano" ]   && om_list="$om_list mano"             && continue
  73     #short options
  74     echo "invalid argument '$param'?  Type -h for help" >&2 && exit 1
  75 done
  76
  77 [[ -n $option_screen_name ]] && option_screen_name=${option_screen_name#*.} #allow the format 'pid.name' and keep only name
  78 #check action is provided
  79 [ -z "$om_action" ] && usage >&2 && exit -1
  80
  81 #if no componenets supplied assume all
  82 [ -z "$om_list" ] && om_list="mano"
  83
  84 function find_process_id(){ #PARAMS:  command screen-name
  85     for process_id in `ps -o pid,cmd -U $USER -u $USER | grep -v grep | grep "${1}" | awk '{print $1}'`
  86     do
  87         scname=$(ps wwep $process_id | grep -o 'STY=\S*')
  88         scname=${scname#STY=}
  89         [[ -n "$2" ]] && [[ "${scname#*.}" != "$2" ]] && continue
  90         echo -n "${process_id} "
  91     done
  92     echo
  93 }
  94
  95 for om_component in $om_list
  96 do
  97     screen_name="${om_component}"
  98     [[ -n "$option_screen_name" ]] && screen_name=$option_screen_name
  99     [ "${om_component}" == "mano" ] && om_cmd="./openmanod.py"   && om_name="openmano  " && om_dir=$(readlink -f ${DIR_OM})
 100     #obtain PID of program
 101     component_id=`find_process_id "${om_cmd}" $option_screen_name`
 102     processes=$(echo $component_id | wc -w)
 103
 104     #status
 105     if [ "$om_action" == "status" ]
 106     then
 107         running=""
 108         for process_id in $component_id
 109         do
 110             scname=$(ps wwep $process_id | grep -o 'STY=\S*')
 111             scname=${scname#STY=}
 112             [[ -n "$option_screen_name" ]] && [[ "${scname#*.}" != "$option_screen_name" ]] && continue
 113             printf "%-15s" "pid: ${process_id},"
 114             [[ -n "$scname" ]] && printf "%-25s" "screen: ${scname},"
 115             echo cmd: $(ps -o cmd p $process_id | tail -n1 )
 116             running=y
 117         done
 118         #if installed as a service and it is not provided a screen name call service
 119         [[ -f /etc/systemd/system/openmano.service ]] && [[ -z $option_screen_name ]] && running=y #&& service openmano status
 120         if [ -z "$running" ]
 121         then
 122             echo -n "    $om_name not running" && [[ -n "$option_screen_name" ]] && echo " on screen '$option_screen_name'" || echo
 123         fi
 124     fi
 125
 126     #if installed as a service and it is not provided a screen name call service
 127     [[ -f /etc/systemd/system/openmano.service ]] && [[ -z $option_screen_name ]] && service openmano $om_action && ( [[ $om_action == status ]] || sleep 5 ) && exit $?
 128
 129
 130     #stop
 131     if [ "$om_action" == "stop" -o "$om_action" == "restart" ]
 132     then
 133         #terminates program
 134         [ $processes -gt 1 ] && echo "$processes processes are running, specify with --screen-name" && continue
 135         [ $processes -eq 1 ] && echo -n "    stopping $om_name ... " && kill_pid $component_id
 136         component_id=""
 137         #terminates screen
 138         if screen -wipe | grep -q -e  "\.${screen_name}\b"
 139         then
 140             screen -S $screen_name -p 0 -X stuff "exit\n" || echo
 141             sleep 1
 142         fi
 143     fi
 144
 145     #start
 146     if [ "$om_action" == "start" -o "$om_action" == "restart" ]
 147     then
 148         #calculates log file name
 149         logfile=""
 150         mkdir -p $DIR_OM/logs && logfile=$DIR_OM/logs/open${screen_name}.log || echo "can not create logs directory  $DIR_OM/logs"
 151         #check already running
 152         [ -n "$component_id" ] && echo "    $om_name is already running. Skipping" && continue
 153         #create screen if not created
 154         echo -n "    starting $om_name ... "
 155         if ! screen -wipe | grep -q -e "\.${screen_name}\b"
 156         then
 157             pushd ${om_dir} > /dev/null
 158             screen -dmS ${screen_name}  bash
 159             sleep 1
 160             popd > /dev/null
 161         else
 162             echo -n " using existing screen '${screen_name}' ... "
 163             screen -S ${screen_name} -p 0 -X log off
 164             screen -S ${screen_name} -p 0 -X stuff "cd ${om_dir}\n"
 165             sleep 1
 166         fi
 167         #move old log file index one number up and log again in index 0
 168         if [[ -n $logfile ]]
 169         then
 170             for index in 8 7 6 5 4 3 2 1
 171             do
 172                 [[ -f ${logfile}.${index} ]] && mv ${logfile}.${index} ${logfile}.$((index+1))
 173             done
 174             [[ -f ${logfile} ]] && mv ${logfile} ${logfile}.1
 175             screen -S ${screen_name} -p 0 -X logfile ${logfile}
 176             screen -S ${screen_name} -p 0 -X log on
 177         fi
 178         #launch command to screen
 179         screen -S ${screen_name} -p 0 -X stuff "${om_cmd}${om_params}\n"
 180         #check if is running
 181         [[ -n $logfile ]] && timeout=120 #2 minute
 182         [[ -z $logfile ]] && timeout=20
 183         while [[ $timeout -gt 0 ]]
 184         do
 185            #check if is running
 186            #echo timeout $timeout
 187            #if !  ps -f -U $USER -u $USER | grep -v grep | grep -q ${om_cmd}
 188            log_lines=0
 189            [[ -n $logfile ]] && log_lines=`head ${logfile} | wc -l`
 190            component_id=`find_process_id "${om_cmd}${om_params}" $screen_name`
 191            if [[ -z $component_id ]]
 192            then #process not started or finished
 193                [[ $log_lines -ge 2 ]] &&  echo -n "ERROR, it has exited." && break
 194                #started because writted serveral lines at log so report error
 195            fi
 196            [[ -n $logfile ]] && grep -q "open${om_component}d ready" ${logfile} && break
 197            sleep 1
 198            timeout=$((timeout -1))
 199         done
 200         if [[ -n $logfile ]] && [[ $timeout == 0 ]]
 201         then
 202            echo -n "timeout!"
 203         else
 204            echo -n "running on 'screen -x ${screen_name}'."
 205         fi
 206         [[ -n $logfile ]] && echo "  Logging at '${logfile}'" || echo
 207     fi
 208 done
 209
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