#!/usr/bin/env expect
############################################################################
# Purpose: Test of Slurm functionality
#          Test of advanced reservation "replace" option.
############################################################################
# Copyright (C) 2015 SchedMD LLC
# Written by Morris Jette <jette@schedmd.com>
#
# 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 node_list_new       ""
set node_list_orig      ""
set resv_name           "resv$test_id"
set user_name		""

if {[is_super_user] == 0} {
	skip "This test can't be run except as SlurmUser"
}

set def_part_name [default_partition]
set nb_nodes [get_node_cnt_in_part $def_part_name]
if {$nb_nodes < 3} {
	skip "This test requires at least 3 nodes in the cluster"
}

set user_name [get_my_user_name]

#
# Create the advanced reservation
#
if { [create_res $resv_name "starttime=now duration=2 nodecnt=2 flags=replace partition=$def_part_name users=$user_name"] } {
	fail "Error creating reservation"
}

#
# Check the advanced reservation's allocated nodes and "REPLACE" flag
#
set match 0
spawn $scontrol show ReservationName=$resv_name
expect {
	-re "Nodes=($re_word_str)" {
		set node_list_orig $expect_out(1,string)
		exp_continue
	}
	-re "Flags=REPLACE" {
		set match 1
		exp_continue
	}
	timeout {
		log_error "scontrol not responding"
		set exit_code 1
	}
	eof {
		wait
	}
}
if {$match != 1} {
	log_error "Reservation REPLACE flag not found"
	set exit_code 1
}

#
# Use a node from the reservation, so it gets replaced
#
spawn $srun -t1 -n1 --reservation=$resv_name $bin_hostname
expect {
	timeout {
		log_error "scontrol not responding"
		set exit_code 1
	}
	eof {
		wait
	}
}

#
# Check that advanced reservation's allocated nodes has been updated
#
spawn $scontrol show ReservationName=$resv_name
expect {
	-re "Nodes=($re_word_str)" {
		set node_list_new $expect_out(1,string)
		exp_continue
	}
	timeout {
		log_error "scontrol not responding"
		set exit_code 1
	}
	eof {
		wait
	}
}
if {![string compare $node_list_orig $node_list_new]} {
	log_error "Reservation failed to replace allocated node"
	set exit_code 1
}

#
# Drain a node from the reservation, so it gets replaced
#
spawn $scontrol update NodeName=$node_list_new State=DRAIN Reason=TESTING
expect {
	-re "Error|error" {
		log_error "Error updating node"
		set exit_code 1
	}
	timeout {
		log_error "scontrol not responding"
		set exit_code 1
	}
	eof {
		wait
	}
}
#
#Wait PERIODIC_TIMEOUT
#
sleep 32
#
# Check that advanced reservation's allocated nodes has been updated
#
spawn $scontrol show ReservationName=$resv_name
expect {
	-re "Nodes=($re_word_str)" {
		set node_list_orig $expect_out(1,string)
		exp_continue
	}
	timeout {
		log_error "scontrol not responding"
		set exit_code 1
	}
	eof {
		wait
	}
}
if {![string compare $node_list_orig $node_list_new]} {
	log_error "Reservation failed to replace drain node"
	set exit_code 1
}

#
# Delete the advanced reservation
#
if { [delete_res $resv_name] } {
	set exit_code 1
}

spawn $scontrol update NodeName=$node_list_new State=RESUME
expect {
	-re "Error|error" {
		log_error "Error updating node"
		set exit_code 1
	}
	timeout {
		log_error "scontrol not responding"
		set exit_code 1
	}
	eof {
		wait
	}
}


if {$exit_code != 0} {
	fail "Test failed due to previous errors"
}