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#!/usr/bin/perl
# Copyright (c) 2011, Oracle and/or its affiliates
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; version 2
# of the License.
#
# 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
################################################################################
#
# This perl script checks for availability of the Perl modules DBI and
# DBD::mysql using the "current" perl interpreter.
#
# Useful for test environment checking before testing executable perl scripts
# in the MySQL Server distribution.
#
# NOTE: The "shebang" on the first line of this script should always point to
# /usr/bin/perl, so that we can use this script to check whether or not we
# support running perl scripts with such a shebang without specifying the
# perl interpreter on the command line. Such a script is mysqlhotcopy.
#
# When run as "checkDBI_DBD-mysql.pl" the shebang line will be evaluated
# and used. When run as "perl checkDBI_DBD-mysql.pl" the shebang line is
# not used.
#
# NOTE: This script will create a temporary file in MTR's tmp dir.
# If modules are found, a mysql-test statement which sets a special
# variable is written to this file. If one of the modules is not found
# (or cannot be loaded), the file will remain empty.
# A test (or include file) which sources that file can then easily do
# an if-check on the special variable to determine success or failure.
#
# Example:
#
# --let $perlChecker= $MYSQLTEST_VARDIR/std_data/checkDBI_DBD-mysql.pl
# --let $resultFile= $MYSQL_TMP_DIR/dbidbd-mysql.txt
# --chmod 0755 $perlChecker
# --exec $perlChecker
# --source $resultFile
# if (!$dbidbd) {
# --skip Test needs Perl modules DBI and DBD::mysql
# }
#
# The calling script is also responsible for cleaning up after use:
#
# --remove_file $resultFile
#
# Windows notes:
# - shebangs may work differently - call this script with "perl " in front.
#
# See mysql-test/include/have_dbi_dbd-mysql.inc for example use of this script.
# This script should be executable for the user running MTR.
#
################################################################################
BEGIN {
# By using eval inside BEGIN we can suppress warnings and continue after.
# We need to catch "Can't locate" as well as "Can't load" errors.
eval{
$FOUND_DBI=0;
$FOUND_DBD_MYSQL=0;
# Check for DBI module:
$FOUND_DBI=1 if require DBI;
# Check for DBD::mysql module
$FOUND_DBD_MYSQL=1 if require DBD::mysql;
};
};
# Open a file to be used for transfer of result back to mysql-test.
# The file must be created whether we write to it or not, otherwise mysql-test
# will complain if trying to source it.
# An empty file indicates failure to load modules.
open(FILE, ">", $ENV{'MYSQL_TMP_DIR'}.'/dbidbd-mysql.txt');
if ($FOUND_DBI && $FOUND_DBD_MYSQL) {
# write a mysql-test command setting a variable to indicate success
print(FILE 'let $dbidbd= FOUND_DBI_DBD-MYSQL;'."\n");
}
# close the file.
close(FILE);
1;
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