#!/bin/bash
# -*- sh -*-

: << =cut

=head1 NAME

  oracle_sysstat_* - Munin plugin to monitor Oracle Statistics

    execute              - To monitor Oracle Sysstat Execute Count
    parse                - To monitor Oracle Sysstat Parse Count
    tablefetch           - To monitor Oracle Sysstat Table Fetch Rows
    tablescan            - To monitor Oracle Sysstat Table Scans
    transaction          - To monitor Oracle Sysstat Transactions
    sort                 - To monitor Oracle Sysstat Sorts
    cursor               - To monitor Oracle Sysstat Open Cursor
    enqueue              - To monitor Oracle Sysstat Enqueues
    redolog              - To monitor Oracle Sysstat Redo Log
    physicaliops         - To monitor Oracle Sysstat Physical I/O Requests
    physicalrw           - To monitor Oracle Sysstat Physical Read/Write Bytes
    netrw                - To monitor Oracle Sysstat Network Send/Receive Bytes
    sgainfo              - To monitor Oracle Memory SGA
    pgastat              - To monitor Oracle Memory PGA
    cachehit             - To monitor Oracle Cache Hit Ratio
    sessionuser          - To monitor Oracle Session Users
    sessionwait          - To monitor Oracle Session Wait
    eventwait            - To monitor Oracle Wait Events
    eventwaitapplication - To monitor Oracle Wait Events Application
    eventwaitconcurrency - To monitor Oracle Wait Events Concurrency
    eventwaituserio      - To monitor Oracle Wait Events User I/O
    eventwaitsystemio    - To monitor Oracle Wait Events System I/O
    eventwaitcluster     - To monitor Oracle Wait Events Cluster
    tablespace           - To monitor Oracle Table Space Usage
    asmusage             - To monitor Oracle ASM Disk Group Usage

=head1 CONFIGURATION

  To get a list of symlinks that can be created, run:   

    ./oracle_sysstat_ suggest

  Make symlinks:

    munin-node-configure --families=contrib --suggest --shell
    ...

  The following shows example settings for this plugin:

    [oracle_sysstat_*]
      user  oracle
      env.oracle_auth  / as SYSDBA
      env.ORACLE_HOME  /path/to/oracle/product/version
      env.ORACLE_SID   SOMESID

    [oracle_sysstat_asmusage]
      user  grid
      env.oracle_auth  / as SYSASM
      env.ORACLE_HOME  /path/to/grid/home/version
      env.ORACLE_SID   SOMESID

=head1 NOTES

  Uses the command "sqlplus".
  Tested with Oracle Database 12c R1.

=head1 AUTHOR

  K.Cima https://github.com/shakemid

=head1 LICENSE

  GPLv2

=cut

# Magic markers
#%# family=contrib
#%# capabilities=autoconf suggest

# Include plugin.sh
. $MUNIN_LIBDIR/plugins/plugin.sh

# Like perl 'use strict;' 
#set -o nounset

# Environments
: ${ORACLE_HOME:=$( echo /opt/oracle/product/* )}
: ${ORACLE_SID:=orcl}
: ${oracle_auth:=/ as SYSDBA}

PATH=$PATH:$ORACLE_HOME/bin
export PATH ORACLE_HOME ORACLE_SID

# Module name
module=$( basename $0 | sed -e 's/^.*_//' )

# Graph settings
declare -A global_attrs  # required
declare -A data_attrs    # required (format: field type draw 'label')
declare -A getfield_func # optional
declare -A getvalue_func # required

key=execute
global_attrs[$key]="
    graph_title Oracle Sysstat Execute Count
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat Execute Count
"
data_attrs[$key]="
    execute_count    DERIVE LINE 'execute count'
    user_calls       DERIVE LINE 'user calls'
    recursive_calls  DERIVE LINE 'recursive calls'
"
getvalue_func[$key]=getvalue_sysstat

key=parse
global_attrs[$key]="
    graph_title Oracle Sysstat Parse Count
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat Parse Count
"
data_attrs[$key]="
    parse_count_total     DERIVE LINE 'parse count (total)'
    parse_count_hard      DERIVE LINE 'parse count (hard)'
    parse_count_failures  DERIVE LINE 'parse count (failures)'
    parse_count_describe  DERIVE LINE 'parse count (describe)'
"
getvalue_func[$key]=getvalue_sysstat

key=tablefetch
global_attrs[$key]="
    graph_title Oracle Sysstat Table Fetch Rows
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat Table Scans
"
data_attrs[$key]="
    table_fetch_by_rowid   DERIVE LINE 'table fetch by rowid'
    table_scan_rows_gotten DERIVE LINE 'table scan rows gotten'
"
getvalue_func[$key]=getvalue_sysstat

key=tablescan
global_attrs[$key]="
    graph_title Oracle Sysstat Table Scans
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat Table Scans
"
data_attrs[$key]="
    table_scans_short_tables DERIVE LINE 'table scans (short tables)'
    table_scans_long_tables  DERIVE LINE 'table scans (long tables)'
"
getvalue_func[$key]=getvalue_sysstat

key=transaction
global_attrs[$key]="
    graph_title Oracle Sysstat Transactions
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat Transactions
"
data_attrs[$key]="
    user_commits   DERIVE LINE 'user commits'
    user_rollbacks DERIVE LINE 'user rollbacks'
"
getvalue_func[$key]=getvalue_sysstat

key=sort
global_attrs[$key]="
    graph_title Oracle Sysstat Sorts
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat - Sorts
"
data_attrs[$key]="
    sorts_memory DERIVE LINE 'sorts (memory)'
    sorts_disk   DERIVE LINE 'sorts (disk)'
"
getvalue_func[$key]=getvalue_sysstat

key=cursor
global_attrs[$key]="
    graph_title Oracle Sysstat Open Cursors
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count
    graph_info Oracle Sysstat Open Cursors
"
data_attrs[$key]="
    open_cursor GAUGE LINE 'opened cursors current'
"
getvalue_func[$key]=getvalue_sysstat

key=enqueue
global_attrs[$key]="
    graph_title Oracle Sysstat Enqueues
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat Enqueues
"
data_attrs[$key]="
    enqueue_requests    DERIVE LINE 'enqueue requests'
    enqueue_releases    DERIVE LINE 'enqueue releases'
    enqueue_conversions DERIVE LINE 'enqueue conversions'
    enqueue_waits       DERIVE LINE 'enqueue waits'
    enqueue_timeouts    DERIVE LINE 'enqueue timeouts'
    enqueue_deadlocks   DERIVE LINE 'enqueue deadlocks'
"
getvalue_func[$key]=getvalue_sysstat

key=redolog
global_attrs[$key]="
    graph_title Oracle Sysstat Redo Log
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count per second
    graph_info Oracle Sysstat Redo Log
"
data_attrs[$key]="
    redo_entries                   DERIVE LINE 'redo entries'
    redo_buffer_allocation_retries DERIVE LINE 'redo buffer allocation retries'
    redo_log_space_requests        DERIVE LINE 'redo log space requests'
"
getvalue_func[$key]=getvalue_sysstat

key=physicaliops
global_attrs[$key]="
    graph_title Oracle Sysstat Physical I/O Requests
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel iops
    graph_info Oracle Sysstat Physical I/O Requests
"
data_attrs[$key]="
    physical_read_total        DERIVE LINE2 'physical read total IO requests'
    physical_read              DERIVE LINE  'physical read IO requests'
    physical_read_total_multi  DERIVE LINE  'physical read total multi block requests'
    physical_write_total       DERIVE LINE2 'physical write total IO requests'
    physical_write             DERIVE LINE  'physical write IO requests'
    physical_write_total_multi DERIVE LINE  'physical write total multi block requests'
"
getvalue_func[$key]=getvalue_sysstat

key=physicalrw
global_attrs[$key]="
    graph_title Oracle Sysstat Physical Read/Write Bytes
    graph_category db
    graph_args --base 1024 --lower-limit 0 --rigid
    graph_vlabel bytes per second
    graph_info Oracle Sysstat Physical Read/Write Bytes
"
data_attrs[$key]="
    physical_read_total  DERIVE LINE2 'physical read total bytes'
    physical_read        DERIVE LINE  'physical read bytes'
    physical_write_total DERIVE LINE2 'physical write total bytes'
    physical_write       DERIVE LINE  'physical write bytes'
"
getvalue_func[$key]=getvalue_sysstat

key=netrw
global_attrs[$key]="
    graph_title Oracle Sysstat Network Send/Receive Bytes
    graph_category db
    graph_args --base 1024 --lower-limit 0 --rigid
    graph_vlabel bytes per second
    graph_info Oracle Sysstat Network Send/Receive Bytes
"
data_attrs[$key]="
    bytes_sent_via_sql_net_to_client       DERIVE LINE 'bytes sent via SQL*Net to client'
    bytes_received_via_sql_net_from_client DERIVE LINE 'bytes received via SQL*Net from client'
    bytes_sent_via_sql_net_to_dblink       DERIVE LINE 'bytes sent via SQL*Net to dblink'
    bytes_received_via_sql_net_from_dblink DERIVE LINE 'bytes received via SQL*Net from dblink'
"
getvalue_func[$key]=getvalue_sysstat

key=sgainfo
global_attrs[$key]="
    graph_title Oracle Memory SGA
    graph_category db
    graph_args --base 1024 --lower-limit 0 --rigid
    graph_vlabel bytes
    graph_info Oracle Memory SGA
"
data_attrs[$key]="
    maximum_sga_size    GAUGE LINE      'Maximum SGA Size'
    fixed_sga_size      GAUGE AREASTACK 'Fixed SGA Size'
    redo_buffers        GAUGE AREASTACK 'Redo Buffers'
    shared_pool_size    GAUGE AREASTACK 'Shared Pool Size'
    large_pool_size     GAUGE AREASTACK 'Large Pool Size'
    java_pool_size      GAUGE AREASTACK 'Java Pool Size'
    streams_pool_size   GAUGE AREASTACK 'Streams Pool Size'
    shared_io_pool_size GAUGE AREASTACK 'Shared IO Pool Size'
    buffer_cache_size   GAUGE AREASTACK 'Buffer Cache Size'
    in_memory_area_size GAUGE AREASTACK 'In-Memory Area Size'
"
getvalue_func[$key]=getvalue_sgainfo

key=pgastat
global_attrs[$key]="
    graph_title Oracle Memory PGA
    graph_category db
    graph_args --base 1024 --lower-limit 0 --rigid
    graph_vlabel bytes
    graph_info Oracle Memory PGA
"
data_attrs[$key]="
    pga_target    GAUGE LINE 'aggregate PGA auto target'
    pga_allocated GAUGE LINE 'total PGA allocated'
    pga_inuse     GAUGE AREA 'total PGA inuse'
"
getvalue_func[$key]=getvalue_pgastat

key=cachehit
global_attrs[$key]="
    graph_title Oracle Cache Hit Ratio
    graph_category db
    graph_args --base 1000 --lower-limit 0 --upper-limit 100 --rigid
    graph_vlabel %
    graph_info Oracle Cache Hit Ratio
    graph_scale no
"
data_attrs[$key]="
    buf_hitratio  GAUGE LINE 'Buffer Cache Hit Ratio'
    lib_hitratio  GAUGE LINE 'Library Cache Hit Ratio'
    dict_hitratio GAUGE LINE 'Dictionary Cache Hit Ratio'
"
getvalue_func[$key]=getvalue_cachehit

key=sessionuser
global_attrs[$key]="
    graph_title Oracle Session Users
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count
    graph_info Oracle Session Users
"
data_attrs[$key]=""
getfield_func[$key]=getfield_sessionuser
getvalue_func[$key]=getvalue_sessionuser

key=sessionwait
global_attrs[$key]="
    graph_title Oracle Session Wait
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel count
    graph_info Oracle Session Wait
"
data_attrs[$key]=""
getfield_func[$key]=getfield_sessionwait
getvalue_func[$key]=getvalue_sessionwait

key=eventwait
global_attrs[$key]="
    graph_title Oracle Wait Events
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel microseconds
    graph_info Oracle Wait Events
"
data_attrs[$key]=""
getfield_func[$key]=getfield_eventwait
getvalue_func[$key]=getvalue_eventwait

key=eventwaitapplication
global_attrs[$key]="
    graph_title Oracle Wait Events Application
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel microseconds
    graph_info Oracle Wait Events Application
"
data_attrs[$key]=""
getfield_func[$key]='getfield_eventwait2 Application'
getvalue_func[$key]='getvalue_eventwait2 Application'

key=eventwaitconcurrency
global_attrs[$key]="
    graph_title Oracle Wait Events Concurrency
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel microseconds
    graph_info Oracle Wait Events Concurrency
"
data_attrs[$key]=" "
getfield_func[$key]='getfield_eventwait2 Concurrency'
getvalue_func[$key]='getvalue_eventwait2 Concurrency'

key=eventwaituserio
global_attrs[$key]="
    graph_title Oracle Wait Events User I/O
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel microseconds
    graph_info Oracle Wait Events User I/O
"
data_attrs[$key]=""
getfield_func[$key]='getfield_eventwait2 "User I/O"'
getvalue_func[$key]='getvalue_eventwait2 "User I/O"'

key=eventwaitsystemio
global_attrs[$key]="
    graph_title Oracle Wait Events System I/O
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel microseconds
    graph_info Oracle Wait Events System I/O
"
data_attrs[$key]="
"
getfield_func[$key]='getfield_eventwait2 "System I/O"'
getvalue_func[$key]='getvalue_eventwait2 "System I/O"'

key=eventwaitcluster
global_attrs[$key]="
    graph_title Oracle Wait Events Cluster
    graph_category db
    graph_args --base 1000 --lower-limit 0 --rigid
    graph_vlabel microseconds
    graph_info Oracle Wait Events Cluster
"
data_attrs[$key]=" "
getfield_func[$key]='getfield_eventwait2 Cluster'
getvalue_func[$key]='getvalue_eventwait2 Cluster'

key=tablespace
global_attrs[$key]="
    graph_title Oracle Table Space Usage
    graph_category db
    graph_args --base 1000 --lower-limit 0 --upper-limit 100 --rigid
    graph_vlabel %
    graph_info Oracle Table Space Usage
    warning ${warning:=92}
    critical ${critical:=98}
"
data_attrs[$key]=""
getfield_func[$key]=getfield_tablespace
getvalue_func[$key]=getvalue_tablespace

key=asmusage
global_attrs[$key]="
    graph_title Oracle ASM Disk Group Usage
    graph_category db
    graph_args --base 1000 --lower-limit 0 --upper-limit 100 --rigid
    graph_vlabel %
    graph_info Oracle ASM Disk Group Usage
    warning ${warning:=92}
    critical ${critical:=98}
"
data_attrs[$key]=""
getfield_func[$key]=getfield_asmusage
getvalue_func[$key]=getvalue_asmusage

# End of Graph Settings

# sqlplus options
: "${sqlplus:=sqlplus -S -L}"
sqlplus_variables="
    set pagesize 0
    set feed off
    set head off
    set linesize 256
    set numwidth 20
"

# functions 

autoconf() {
    if [ -x "$( which ${sqlplus} )" ]; then
        echo yes
    else
        echo "no (failed to find executable 'sqlplus')"
    fi
}

suggest() {
    echo ${!global_attrs[@]} | tr ' ' '\n' | sort
}

config() {
    # print global attributes
    sed -e 's/^  *//' -e '/^$/d' <<< "${global_attrs[$module]}"

    # print data source attributes
    local line t fields field type draw label
    while IFS= read -r line
    do
        eval 't=(' "$line" ')'
        field="${t[0]}"
        [ -z "$field" ] && continue
        fields+=( $field )
        type="${t[1]}"
        draw="${t[2]}"
        label="${t[3]}"

        echo ${field}.type  ${type}
        echo ${field}.draw  ${draw}
        echo ${field}.label ${label}
    done <<< "${data_attrs[$module]}"

    echo graph_order ${fields[@]}
}

getfield() {
    if [ -n "${getfield_func[$module]:-}" ]; then
        eval "${getfield_func[$module]}"
    fi
}

getvalue() {
    eval "${getvalue_func[$module]}"
}

getvalue_sysstat() {
    local line t field label
    while IFS= read -r line
    do
        eval 't=(' "$line" ')'
        field="${t[0]}"
        [ -z "$field" ] && continue
        label="${t[3]}"

        ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
VAR vf VARCHAR2(64)
VAR vl VARCHAR2(64)
EXEC :vf := '${field}' 
EXEC :vl := '${label}' 
SELECT
  :vf || '.value ' || value
FROM
  v\$sysstat
WHERE
  name = :vl;
EOF
    done <<< "${data_attrs[$module]}"
}

getvalue_sgainfo() {
    local line t field label
    while IFS= read -r line
    do
        eval 't=(' "$line" ')'
        field="${t[0]}"
        [ -z "$field" ] && continue
        label="${t[3]}"

        ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
VAR vf VARCHAR2(64)
VAR vl VARCHAR2(64)
EXEC :vf := '${field}' 
EXEC :vl := '${label}' 
SELECT
  :vf || '.value ' || bytes
FROM
  v\$sgainfo
WHERE
  name = :vl;
EOF
    done <<< "${data_attrs[$module]}"
}

getvalue_pgastat() {
    local line t field label
    while IFS= read -r line
    do
        eval 't=(' "$line" ')'
        field="${t[0]}"
        [ -z "$field" ] && continue
        label="${t[3]}"

        ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
VAR vf VARCHAR2(64)
VAR vl VARCHAR2(64)
EXEC :vf := '${field}' 
EXEC :vl := '${label}' 
SELECT
  :vf || '.value ' || value
FROM
  v\$pgastat
WHERE
  name = :vl;
EOF
    done <<< "${data_attrs[$module]}"
}

getvalue_cachehit() {
    ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  'buf_hitratio.value ' || ROUND( ( 1 - a.value / ( b.value + c.value ) ) * 100 )
FROM
  v\$sysstat a, v\$sysstat b, v\$sysstat c
WHERE
  a.name = 'physical reads' AND
  b.name = 'db block gets' AND
  c.name = 'consistent gets'
;
SELECT
  'lib_hitratio.value ' || ROUND( SUM(pins) / ( SUM(pins) + SUM(reloads) ) * 100 )
FROM
  v\$librarycache
;
SELECT
  'dict_hitratio.value ' || ROUND( ( 1 - SUM(getmisses) / SUM(gets) ) * 100 )
FROM
  v\$rowcache
;
EOF
}

getfield_sessionuser() {
    data_attrs[$module]="$( ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( username, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) ||
  ' GAUGE LINE ' || '''' || username || ''''
FROM
  dba_users
WHERE
  account_status = 'OPEN'
ORDER BY
  username;
EOF
)"
}

getvalue_sessionuser() {
    ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( du.username, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) || '.value ' ||
  count(vs.username)
FROM 
  ( SELECT
      username
    FROM
      dba_users
    WHERE
      account_status = 'OPEN'
  ) du
  LEFT JOIN v\$session vs
ON
  du.username = vs.username
GROUP BY
  du.username;
EOF
}

getfield_sessionwait() {
    data_attrs[$module]="$( ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( wait_class, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) ||
  ' GAUGE AREASTACK ' || '''' || wait_class || ''''
FROM
  v\$event_name
WHERE
  wait_class NOT IN ( 'Other', 'Idle' )
GROUP BY
  wait_class
ORDER BY
  wait_class;
SELECT 'Other GAUGE AREASTACK Other' from dual;
SELECT 'Idle  GAUGE AREASTACK Idle' from dual;
EOF
)"
}

getvalue_sessionwait() {
    ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( en.wait_class, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) || '.value ' ||
  count(se.wait_class)
FROM
  ( SELECT
      wait_class
    FROM
      v\$event_name
    GROUP BY
      wait_class
  ) en
  LEFT JOIN v\$session se
ON
  en.wait_class = se.wait_class AND 
  se.username is not null
GROUP BY
  en.wait_class;
EOF
}

getfield_eventwait() {
    data_attrs[$module]="$( ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( wait_class, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) ||
  ' DERIVE LINE ' || '''' || wait_class || ''''
FROM
  v\$event_name
WHERE
  wait_class NOT IN ( 'Other', 'Idle' )
GROUP BY
  wait_class
ORDER BY
  wait_class;
SELECT 'Other DERIVE LINE Other' from dual;
EOF
)"
}

getvalue_eventwait() {
    ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( en.wait_class, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) || '.value ' ||
  NVL( SUM(se.time_waited_micro), 0 )
FROM
  ( SELECT
      wait_class
    FROM
      v\$event_name
    WHERE
      wait_class NOT IN ( 'Idle' )
    GROUP BY
      wait_class
  ) en
  LEFT JOIN v\$system_event se
ON
  en.wait_class = se.wait_class
GROUP BY
  en.wait_class;
EOF
}

getfield_eventwait2() {
    local waitclass="$1"

    data_attrs[$module]="$( ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
VAR vl VARCHAR2(64)
EXEC :vl := '${waitclass}' 
SELECT
  REGEXP_REPLACE( name, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) ||
  ' DERIVE LINE ' || '''' || SUBSTR( name, 1, 45 ) || ''''
FROM
  v\$event_name 
WHERE
  wait_class = :vl
ORDER BY
  name;
EOF
)"
}

getvalue_eventwait2() {
    local waitclass="$1"

    ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
VAR vl VARCHAR2(64)
EXEC :vl := '${waitclass}' 
SELECT
  REGEXP_REPLACE( en.name, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) || '.value ' || 
  NVL( se.time_waited_micro, 0 )
FROM
  v\$event_name en LEFT JOIN v\$system_event se
ON
  en.name = se.event
WHERE
  en.wait_class = :vl;
EOF
}

getfield_tablespace() {
    data_attrs[$module]="$( ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( tablespace_name, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) ||
  ' GAUGE LINE ' || '''' || tablespace_name || ''''
FROM
  dba_data_files
ORDER BY
  tablespace_name;
EOF
)"
}

getvalue_tablespace() {
    ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( tablespace_name, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) || '.value ' ||
  ROUND( (total_bytes - free_total_bytes) / total_bytes * 100, 0 )
FROM
  ( SELECT
      tablespace_name,
      SUM(bytes) total_bytes
    FROM
      dba_data_files
    GROUP BY
      tablespace_name
  ),
  ( SELECT
      tablespace_name free_tablespace_name,
      SUM(bytes) free_total_bytes
    FROM
      dba_free_space
    GROUP BY
      tablespace_name
  )
WHERE
  tablespace_name = free_tablespace_name;
EOF
}

getfield_asmusage() {
    data_attrs[$module]="$( ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( name, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) ||
  ' GAUGE LINE ' || '''' || name || ''''
FROM
  v\$asm_diskgroup
ORDER BY
  name;
EOF
)"
}

getvalue_asmusage() {
    ${sqlplus} "${oracle_auth}" <<EOF
${sqlplus_variables}
SELECT
  REGEXP_REPLACE( name, '^[^A-Za-z_]|[^A-Za-z0-9_]', '_' ) || '.value ' ||
  ROUND( ( total_mb - free_mb ) / total_mb * 100 )
FROM
  v\$asm_diskgroup
ORDER BY
  name;
EOF
}

# main
case ${1:-} in
autoconf)
    autoconf
    ;;
suggest)
    suggest
    ;;
config)
    getfield
    config
    ;;
*)
    getvalue
    ;;
esac

exit 0