#!/bin/bash
# Fred Denis -- Nov 2017 -- fred.denis3@gmail.com -- http://unknowndba.blogspot.com
# exa-versions.sh - show a nice summary of the versions of each component of an Exadata stack (DB servers, Cells and Switches) (https://bit.ly/38XfPAx)
# Copyright (C) 2021 Fred Denis
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
#
#
# More info and git repo: https://bit.ly/38XfPAx -- https://github.com/freddenis/oracle-scripts
#
# The current script version is 20211111
#
# History :
#
# 20211111 - Fred Denis - GPLv3 licence, ib/roce have no status so cannot be shown in red
# 20211018 - Fred Denis - oraenv not needed here so I removed it; cosmetic
# 20200715 - Fred Denis - Manage the ROCE switches which come with X8M+
#                         Keep in mind that you can deploy the SSH keys to the ROCE switches using /opt/oracle.SupportTools/RoCE/setup_switch_ssh_equiv.sh
# 20190528 - Fred Denis - Fixed a bug on the headers
# 20190524 - Fred Denis - Better management of the naming of the hosts, cells and IB
# 20180913 - Fred Denis - Add the status = failure information for the Cells and DB Servers
#
#
# Variables
#
  DBMACHINE=/opt/oracle.SupportTools/onecommand/databasemachine.xml       # File where we should find the Exadata model
   SHOW_ALL="Yes"
   SHOW_DBS="No"
 SHOW_CELLS="No"
   SHOW_IBS="No"
NB_PER_LINE=$(bc <<< "`tput cols`/22")          # Number of element to print per line
                                                #       -- default adapts to the size of the screen (thanks to tput)
                                                #       -- can be changed at script execution with the -n option
# From X8M, we have no way of dynamycally know the nodes so we have to rely on hardcoded lists
 X8M_DBS_GROUP="${HOME}/dbs_group"
X8M_CELL_GROUP="${HOME}/cell_group"
X8M_ROCE_GROUP="${HOME}/roce_group"
     ROCE_USER="ciscoexa"
#
# Check if ibhosts works (if not, we are on X8M+)
#
ibhosts > /dev/null 2>&1
if [ $? -ne 0 ]; then
  X8M="True"
else
  X8M="False"
fi
#
# usage function
#
usage() {
printf "\n\033[1;37m%-8s\033[m\n" "NAME"                        ;
cat << END
    exa-versions.sh - show a nice summary of the versions of each component of an Exadata stack (DB servers, Cells and Switches) (https://bit.ly/38XfPAx)
END

printf "\n\033[1;37m%-8s\033[m\n" "SYNOPSIS"                    ;
cat << END
    $0 [-d] [-c] [-i] [-n] [-C] [-D] [-R] [-I] [-h]
END

printf "\n\033[1;37m%-8s\033[m\n" "DESCRIPTION"                 ;
cat << END
    $0 needs to be executed as root and the ssh keys to each Exadata component have to be deployed
    With no option $0 will show the versions of all the Exadata components (DB servers, Cells and IB)
    If a DB servers or cell has a status = failure returned by the imageinfo command, the host will appear
      in red and a note about this will be shown at the end of the report
END

printf "\n\033[1;37m%-8s\033[m\n" "OPTIONS"                     ;
cat << END
    -d    Show the Database servers versions
    -c    Show the Cells (storage servers) versions
    -i    Show the Switches versions (IB if < X8M, ROCE if X8M+)
    -r    Show the Switches versions (IB if < X8M, ROCE if X8M+)

    -C    A specific cell_group file
    -D    A specific dbs_group file
    -R    A specific roce_group file
    -I    A specific ib_group file

    -n    Number of nodes to show per line (default adapts the output to the current screen size)

    -h    Shows this help

END
exit 123
}
#
# Options management
#
while getopts "dcirn:D:C:I:R:h" OPT; do
   case ${OPT} in
   d)       SHOW_ALL="No";   SHOW_DBS="Yes";                           ;;
   D)       SHOW_ALL="No";   SHOW_DBS="Yes";  P_DBS_GROUP="${OPTARG}"  ;;
   c)       SHOW_ALL="No"; SHOW_CELLS="Yes"                            ;;
   C)       SHOW_ALL="No"; SHOW_CELLS="Yes"; P_CELL_GROUP="${OPTARG}"  ;;
   i)       SHOW_ALL="No";   SHOW_IBS="Yes"                            ;;
   I)       SHOW_ALL="No";   SHOW_IBS="Yes";   P_IB_GROUP="${OPTARG}"  ;;
   r)       SHOW_ALL="No";   SHOW_IBS="Yes"                            ;;
   R)       SHOW_ALL="No";   SHOW_IBS="Yes";   P_IB_GROUP="${OPTARG}"  ;;
   n)    NB_PER_LINE=${OPTARG}                                         ;;
   h)    usage                                                         ;;
   \?) echo "Invalid option: -$OPTARG" >&2; usage                      ;;
   esac
done
#
# Show the Exadata model if possible
#
if [ -f "${DBMACHINE}" ] && [ -r "${DBMACHINE}" ];  then
    cat << !

        Cluster is a `grep -i MACHINETYPES ${DBMACHINE} | sed s'/\t*//' | sed -e s':</*MACHINETYPES>::g' -e s'/^ *//' -e s'/ *$//'`

!
else
    printf "\n"
fi
#
# Fill the tempfiles
#
if [[ "${X8M}" = "False" ]] ; then
    if [[ -n "${P_DBS_GROUP}" ]]; then
        DBS_GROUP="${P_DBS_GROUP}"
    else
        DBS_GROUP=$(mktemp -u)
        ibhosts | grep db  | grep -v cel | sed s'/"//g' | awk '{print $6}'  > ${DBS_GROUP}
        TO_DELETE1="${DBS_GROUP}"
    fi
    if [[ -n "${P_CELL_GROUP}" ]]; then
        CELL_GROUP="${P_CELL_GROUP}"
    else
        CELL_GROUP=$(mktemp -u)
        ibhosts | grep cel | sed s'/"//g'               | awk '{print $6}'  > ${CELL_GROUP}
        TO_DELETE2="${CELL_GROUP}"
    fi
    if [[ -n "${P_IB_GROUP}" ]]; then
        IB_GROUP="${P_IB_GROUP}"
    else
        IB_GROUP=$(mktemp -u)
        ibswitches                                      | awk '{print $10}' > ${IB_GROUP}
        TO_DELETE3="${IB_GROUP}"
    fi
else
    if [[ -n "${P_DBS_GROUP}" ]]; then
        DBS_GROUP="${P_DBS_GROUP}"
    else
        DBS_GROUP="${X8M_DBS_GROUP}"
    fi
    if [[ -n "${P_CELL_GROUP}" ]]; then
        CELL_GROUP="${P_CELL_GROUP}"
    else
        CELL_GROUP="${X8M_CELL_GROUP}"
    fi
    if [[ -n "${P_IB_GROUP}" ]]; then
        IB_GROUP="${P_IB_GROUP}"
    else
        IB_GROUP="${X8M_ROCE_GROUP}"
    fi
fi


( if [[ "$SHOW_DBS" = "Yes" ]] || [[ "$SHOW_ALL" = "Yes" ]] && [[ -f "${DBS_GROUP}" ]] 
  then
        dcli -g ${DBS_GROUP} -l root "imageinfo -ver -status" | sort | awk -F ": " '{if(node==""){node=$1}; if($2 != "") {status=$3; getline; printf ("%s:%s:%s:%s\n","db", node, $3, status);  node="" ;}}'
        echo ""
  fi
  if [[ "$SHOW_CELLS" = "Yes" ]] || [[ "$SHOW_ALL" = "Yes" ]] && [[ -f "${CELL_GROUP}" ]]
  then
        dcli -g ${CELL_GROUP} -l root "imageinfo -ver -status" | grep "Active" | sort | awk -F ": " '{if(node==""){node=$1}; if($2 != "") {status=$3; getline; printf ("%s:%s:%s:%s\n","cel", node, $3, status);  node="" ;}}'
        echo ""
  fi
  if [[ "$SHOW_IBS" = "Yes" ]] || [[ "$SHOW_ALL" = "Yes" ]]
  then
      if [[ -f "${IB_GROUP}" ]] ; then
          if [[ "${X8M}" = "False" ]]; then
              dcli -g ${IB_GROUP}  -l root version | grep -v BIOS | grep "version:" | awk '{print "ib:", $1, $NF}' | sort
          else
              # dcli does not seem to work with the roce switches
              for S in $(cat ${IB_GROUP} | sort); do
                  ssh -q ${ROCE_USER}@${S} show version | grep "NXOS: version" | awk -v SWITCH="${S}" '{print "ib:", SWITCH":", $NF}'
             done
          fi
      fi
        echo ""
  fi
)\
| awk -v NB_PER_LINE="$NB_PER_LINE" -v X8M="${X8M}" ' BEGIN \
    {   FS =      ":"                                                     ;
        # some color
        COLOR_BEGIN =      "\033[1;"                                      ;
          COLOR_END =      "\033[m"                                       ;     
                RED =      "31m"                                          ;
              GREEN =      "32m"                                          ;
             YELLOW =      "33m"                                          ;
               BLUE =      "34m"                                          ;
               TEAL =      "36m"                                          ;
              WHITE =      "37m"                                          ;
        # Columns size
           COL_SIZE =      20                                             ;
        # Some variables 
           nb_node  =      0                                              ;
           FAILURES =      0                                              ;
    }
    function print_a_line(size) {
        printf("%s", COLOR_BEGIN WHITE)                                   ;
        for (k=1; k<=size;k++) {printf("%s", "-");}                       ;
        printf("%s", COLOR_END"\n")                                       ;
    }
    #
    # A function to center the outputs with colors
    #
    function center(str, n, color) {
        right = int((n - length(str)) / 2)                                ;
        left = n - length(str) - right                                    ;
        return sprintf(COLOR_BEGIN color "%" left "s%s%" right "s" COLOR_END, "", str, "" )  ;
    }
    {   if ($0 !~ /^$/) {
                        nb_node++                                         ;
                           type = $1                                      ;
               db_node[nb_node] = $2                                      ;
            db_version[nb_node] = $3                                      ;
             db_status[nb_node] = $4                                      ;

        while (getline) {
            if ($0 ~ /^$/) {
                # A Header
                if (type == "db")      {printf("%s\n", center("-- Database Servers",         40,RED))};
                if (type == "cel")     {printf("%s\n", center("-- Cells",                    30,RED))};
                if (type == "ib") {
                if (X8M == "False") {
                    printf("%s\n", center("-- Infiniband Switches",      40,RED))       ;
                } else {
                    printf("%s\n", center("-- ROCE Switches",            40,RED))       ;
                }
            }
            printf("\n")                                                   ;
            version_ref = db_version[1]                                    ;

            for (a=0; a<nb_node; a+=NB_PER_LINE) {
                nb_printed = 0                                             ;
                # Print the node names
                for (i=a+1; i<=a+NB_PER_LINE; i++) {
                    COLOR=WHITE                                            ;
                    if ((db_status[i] != "success") && (type != "ib")) {COLOR=RED; FAILURES=1} ;
                    if (length(db_node[i]) > 0) {
                        printf("%s", center(db_node[i],COL_SIZE,COLOR))    ;
                        nb_printed++                                       ;
                    }
                }

                printf("\n")                                               ;
                print_a_line(COL_SIZE*nb_printed+NB_TO_SHOW)               ;
                # Print the nodes versions
                for (i=a+1; i<=a+NB_PER_LINE; i++) {
                    if (length(db_version[i]) > 0) {
                        if (db_version[i] == version_ref) {
                            A_COLOR=BLUE                                   ;
                        } else {
                            A_COLOR=TEAL                                   ;
                        }
                        printf("%s", center(db_version[i],COL_SIZE,A_COLOR));
                    }
                }
                printf("\n")                                               ;
                print_a_line(COL_SIZE*nb_printed+NB_TO_SHOW)               ;
                printf("\n\n")                                             ;
            }       # END  for (a=0; a<nb_node; a+=NB_PER_LINE)

            nb_node = 0                                                    ;
            delete db_node                                                 ;
            delete db_version                                              ;
            delete db_status                                               ;
            break                                                          ;
        }       # END if ($0 ~ /^$/)

                   nb_node++                                               ;
           db_node[nb_node] = $2                                           ;
        db_version[nb_node] = $3                                           ;
         db_status[nb_node] = $4                                           ;
     }       # END while (getline)
                        }       # END  if ($0 !~ /^$/)
     } END { if (FAILURES == 1) {
             printf("%s\n\n", "Note : Please investigate the hosts in red as they have a status != success returned by the imageinfo command.")       ;
             }
           }'
#
# Cleanup
#
    for F in TO_DELETE1 TO_DELETE2 TO_DELETE3; do
        rm -f "${F}"
    done
#
#*******************************************************************************************************#
#                               E N D     O F      S O U R C E                                          #
#*******************************************************************************************************#