contrib/reghunt/date_based/reg_periodic

   1 #! /bin/bash
   2
   3 ########################################################################
   4 #
   5 # File:    reg_periodic
   6 # Author:  Janis Johnson
   7 # Date:    2002/12/28
   8 #
   9 # Over a range of dates at specified intervals, invoke separate tools to
  10 # update sources, do a build, and run one or more tests.
  11 #
  12 # Define these in a file whose name is the argument to this script:
  13 #   LOW_DATE:   Date string recognized by the date command.
  14 #   HIGH_DATE:  Date string recognized by the date command.
  15 #   INTERVAL:   Time (in seconds) between dates for which to build.
  16 #   REG_UPDATE: Pathname of script to update your source tree.
  17 #   REG_BUILD:  Pathname of script to build enough of the product to run
  18 #               the test.
  19 #   REG_TEST:   Pathname of script to run one or more tests.
  20 # Optional:
  21 #   VERBOSITY:  Default is 0, to print only errors and final message.
  22 #   DATE_IN_MSG If set to anything but 0, include the time and date in
  23 #               messages
  24 #   REG_STOP    Pathname of a file whose existence says to quit; default
  25 #               is STOP in the current directory.
  26 #
  27 #
  28 # Copyright (c) 2002, 2003, 2005, 2009, 2010 Free Software Foundation, Inc.
  29 #
  30 # This file is free software; you can redistribute it and/or modify
  31 # it under the terms of the GNU General Public License as published by
  32 # the Free Software Foundation; either version 3 of the License, or
  33 # (at your option) any later version.
  34 #
  35 # This program is distributed in the hope that it will be useful,
  36 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  37 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  38 # GNU General Public License for more details.
  39 #
  40 # You should have received a copy of the GNU General Public License
  41 # along with this program; see the file COPYING3.  If not see
  42 # <http://www.gnu.org/licenses/>.
  43 #
  44 ########################################################################
  45
  46 ########################################################################
  47 # Functions
  48 ########################################################################
  49
  50 # Issue a message if its verbosity level is high enough.
  51
  52 msg() {
  53   test ${1} -gt ${VERBOSITY}  && return
  54
  55   if [ "x${DATE_IN_MSG}" = "x" ]; then
  56     echo "${2}"
  57   else
  58     echo "`${DATE}`  ${2}"
  59   fi
  60 }
  61
  62 # Issue an error message and exit with a nonzero status.
  63
  64 error() {
  65   msg 0 "error: ${1}"
  66   exit 1
  67 }
  68
  69 # Turn seconds since the epoch into a date we can use with source
  70 # control tools and report to the user.
  71
  72 make_date() {
  73   MADE_DATE=`${DATE} -u +"%Y-%m-%d %H:%M %Z" --date "1970-01-01 ${1} seconds"` \
  74     || error "make_date: date command failed"
  75 }
  76
  77 # Build the components to test using sources as of a particular date and
  78 # run a test case.  Pass each of the scripts the date that we're
  79 # testing; the first one needs it, the others can ignore it if they want.
  80
  81 process_date() {
  82   TEST_DATE="${1}"
  83
  84   ${REG_UPDATE} "${TEST_DATE}"
  85   if [ $? -ne 0 ]; then
  86     msg 0 "source update failed for ${TEST_DATE}"
  87     return
  88   fi
  89   ${REG_BUILD} "${TEST_DATE}"
  90   if [ $? -ne 0 ]; then
  91     msg 0 "build failed for ${TEST_DATE}"
  92     return
  93   fi
  94   ${REG_TEST} "${TEST_DATE}"
  95 }
  96
  97 ########################################################################
  98 # Main program (so to speak)
  99 ########################################################################
 100
 101 # If DATE isn't defined, use the default date command; the configuration
 102 # file can override this.
 103
 104 if [ "x${DATE}" = "x" ]; then
 105   DATE=date
 106 fi
 107
 108 # Process the configuration file.
 109
 110 if [ $# -ne 1 ]; then
 111   echo Usage: $0 config_file
 112   exit 1
 113 fi
 114
 115 CONFIG=${1}
 116 if [ ! -f ${CONFIG} ]; then
 117   error "configuration file ${CONFIG} does not exist"
 118 fi
 119
 120 # OK, the config file exists.  Source it, make sure required parameters
 121 # are defined and their files exist, and give default values to optional
 122 # parameters.
 123
 124 . ${CONFIG}
 125
 126 test "x${REG_UPDATE}" = "x" && error "REG_UPDATE is not defined"
 127 test "x${REG_BUILD}" = "x" && error "REG_BUILD is not defined"
 128 test "x${REG_TEST}" = "x" && error "REG_TEST is not defined"
 129 test "x${INTERVAL}" = "x" && error "INTERVAL is not defined"
 130 test -x ${REG_TEST} || error "REG_TEST is not an executable file"
 131 test "x${VERBOSITY}" = "x" && VERBOSITY=0
 132 test "x${REG_STOP}" = "x" && REG_STOP="STOP"
 133
 134 msg 2 "LOW_DATE   = ${LOW_DATE}"
 135 msg 2 "HIGH_DATE  = ${HIGH_DATE}"
 136 msg 2 "INTERVAL   = ${INTERVAL}"
 137 msg 2 "REG_UPDATE = ${REG_UPDATE}"
 138 msg 2 "REG_BUILD  = ${REG_BUILD}"
 139 msg 2 "REG_TEST   = ${REG_TEST}"
 140 msg 2 "VERBOSITY  = ${VERBOSITY}"
 141
 142 # Change the dates into seconds since the epoch.  This uses an extension
 143 # in GNU date.
 144
 145 LOW_DATE=`${DATE} +%s --date "${LOW_DATE}"` || \
 146   error "date command failed for \"${LOW_DATE}\""
 147 HIGH_DATE=`${DATE} +%s --date "${HIGH_DATE}"` || \
 148   error "date command failed for \"${LOW_DATE}\""
 149
 150 # Process each date in the range.
 151
 152 while [ ${LOW_DATE} -le ${HIGH_DATE} ]; do
 153
 154   # If a file called STOP appears, stop; this allows a clean way to
 155   # interrupt a search.
 156
 157   if [ -f ${REG_STOP} ]; then
 158     msg 0 "STOP file detected"
 159     rm -f ${REG_STOP}
 160     exit 1
 161   fi
 162
 163   # Get a version of the date that is usable by tools and readable
 164   # by people, then process it.
 165
 166   make_date ${LOW_DATE}
 167   process_date "${MADE_DATE}"
 168   let LOW_DATE=LOW_DATE+INTERVAL
 169 done
 170
 171 msg 1 "done"