#!/usr/bin/env expect
############################################################################
# Purpose: Test of Slurm functionality
#          Verify that user user limits are propagated to the job.
############################################################################
# Copyright (C) 2002 The Regents of the University of California.
# Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
# Written by Morris Jette <jette1@llnl.gov>
# CODE-OCEC-09-009. All rights reserved.
#
# This file is part of Slurm, a resource management program.
# For details, see <https://slurm.schedmd.com/>.
# Please also read the included file: DISCLAIMER.
#
# Slurm 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 2 of the License, or (at your option)
# any later version.
#
# Slurm 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 Slurm; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
############################################################################
source ./globals

set exit_code        0
set file_err         "test$test_id.error"
set file_in          "test$test_id.input"
set file_out         "test$test_id.output"
set file_prog_get    "test$test_id.prog"
set job_id           0
set limit_core       943
set limit_fsize      674515
set limit_nofile     1016
set limit_nproc      34500
set limit_stack      5021
set matches          0

if {[test_front_end] != 0 && [test_super_user] == 0} {
	skip "This test is incompatible with front-end systems"
}

#
# Delete left-over programs and rebuild them.
# We use our own program to get ulimit values since the output
# of the ulimit program is inconsistent across systems.
#
exec $bin_rm -f $file_prog_get $file_err $file_in $file_out
exec $bin_cc -O ${file_prog_get}.c -o $file_prog_get
exec $bin_chmod 700 $file_prog_get

#
# Get our current limits and adjust targets accordingly
#
set cur_core   -1
set cur_fsize  -1
set cur_nofile -1
set cur_nproc  -1
set cur_stack  -1

spawn ./$file_prog_get
expect {
	-re "USER_CORE=($number)" {
		set cur_core $expect_out(1,string)
		exp_continue
	}
	-re "USER_FSIZE=($number)" {
		set cur_fsize $expect_out(1,string)
		exp_continue
	}
	-re "USER_NOFILE=($number)" {
		set cur_nofile $expect_out(1,string)
		exp_continue
	}
	-re "USER_NPROC=($number)" {
		set cur_nproc $expect_out(1,string)
		exp_continue
	}
	-re "USER_STACK=($number)" {
		set cur_stack $expect_out(1,string)
		exp_continue
	}
}

if {$cur_core != -1} {
	set limit_core [expr ($cur_core / 1024) - 2]
	if {$limit_core < 1} {
		set limit_core [expr $cur_core / 1024]
	}
}
if {$cur_fsize != -1} {
	set limit_fsize [expr ($cur_fsize / 1024) - 2]
	if {$limit_fsize < 1} {
		set limit_fsize [expr $cur_fsize / 1024]
	}
}
if {$cur_nofile != -1} {
	set limit_nofile [expr $cur_nofile - 2]
	if {$limit_nofile < 1} {
		set limit_nofile $cur_nofile
	}
}
if {$cur_nproc != -1} {
	set limit_nproc [expr $cur_nproc - 200]
	if {$limit_nproc < 1} {
		set limit_nofile $cur_nproc
	}
}
if {$cur_stack != -1} {
	set limit_stack [expr ($cur_stack / 1024) - 2]
	if {$limit_stack < 1} {
		set limit_stack [expr $cur_stack / 1024]
	}
}

#
# Spawn a job via srun to print environment variables and user limits
#
make_bash_script $file_in "
  ulimit -c $limit_core
  ulimit -f $limit_fsize
  ulimit -n $limit_nofile
  ulimit -u $limit_nproc
  ulimit -s $limit_stack
  $srun -N1 ./$file_prog_get
"


set timeout $max_job_delay
set srun_pid [spawn $sbatch -n1 --output=$file_out --error=$file_err -t1 ./$file_in]
expect {
	-re "Submitted batch job ($number)" {
		set job_id $expect_out(1,string)
		exp_continue
	}
	timeout {
		log_error "srun not responding"
		slow_kill $srun_pid
		set exit_code 1
	}
	eof {
		wait
	}
}

if {$job_id == 0} {
	fail "Batch submit failure"
}

#
# Wait for job to complete
#
if {[wait_for_job $job_id "DONE"] != 0} {
	fail "Waiting for job to complete"
}

#
# Inspect the job's output file
#
if {[wait_for_file $file_out] != 0} {
	fail "Failed waiting for file ($file_out)"
}
spawn $bin_sort $file_out
expect {
	-re "USER_CORE=($number)" {
		set target [expr $limit_core * 1024]
		if {$expect_out(1,string) == $target} {
			incr matches
		} else {
			log_warn "CORE value bad ($expect_out(1,string) != $target)"
		}
		exp_continue
	}
	-re "USER_FSIZE=($number)" {
		set target [expr $limit_fsize * 1024]
		if {$expect_out(1,string) == $target} {
			incr matches
		} else {
			log_warn "FSIZE value bad ($expect_out(1,string) != $target)"
		}
		exp_continue
	}
	-re "USER_NOFILE=($number)" {
		if {$expect_out(1,string) == $limit_nofile} {
			incr matches
		} else {
			log_warn "NOFILE value bad ($expect_out(1,string) != $limit_nofile)"
		}
		exp_continue
	}
	-re "USER_NPROC=($number)" {
		if {$expect_out(1,string) == $limit_nproc} {
			incr matches
		} else {
			log_warn "NPROC value bad ($expect_out(1,string) != $limit_nproc)"
		}
		exp_continue
	}
	-re "USER_NPROC unsupported" {
		incr matches
		exp_continue
	}
	-re "USER_STACK=($number)" {
		set target [expr $limit_stack * 1024]
		if {$expect_out(1,string) == [expr $limit_stack * 1024]} {
			incr matches
		} else {
			log_warn "STACK value bad ($expect_out(1,string) != $target)"
		}
		exp_continue
	}
	-re "USER_STACK unsupported" {
		incr matches
		exp_continue
	}
	timeout {
		log_error "Sort not responding"
		set exit_code 1
	}
	eof {
		wait
	}
}

set target 5
if {$matches != $target} {
	fail "User limits not propagated got $matches of $target matches. Check PropagateResourceLimits configuration parameter. Check $file_err for errors. A long running slurmd could cause a file size limit error. slurmd could have been started with limits lower than user launching the task"
}

if {$exit_code == 0} {
    exec $bin_rm -f $file_err $file_in $file_prog_get $file_out

} else {
	fail "Test failed due to previous errors (\$exit_code = $exit_code)"
}