db-4.8.30/test/rep069.tcl

# See the file LICENSE for redistribution information.
#
# Copyright (c) 2004-2009 Oracle.  All rights reserved.
#
# $Id$
#
# TEST	rep069
# TEST	Test of internal initialization and elections.
# TEST
# TEST	If a client is in a recovery mode of any kind, it
# TEST	participates in elections at priority 0 so it can
# TEST	never be elected master.
#
proc rep069 { method { niter 200 } { tnum "069" } args } {

	source ./include.tcl
	global databases_in_memory
	global repfiles_in_memory

	if { $is_windows9x_test == 1 } {
		puts "Skipping replication test on Win 9x platform."
		return
	}
	if { $checking_valid_methods } {
		set test_methods { btree }
		return $test_methods
	}
	if { [is_btree $method] == 0 } {
		puts "Rep$tnum: Skipping for method $method."
		return
	}

	set args [convert_args $method $args]
	set saved_args $args

	set logsets [create_logsets 2]

	# Set up for on-disk or in-memory databases.
	set msg "using on-disk databases"
	if { $databases_in_memory } {
		set msg "using named in-memory databases"
		if { [is_queueext $method] } {
			puts -nonewline "Skipping rep$tnum for method "
			puts "$method with named in-memory databases."
			return
		}
	}

	set msg2 "and on-disk replication files"
	if { $repfiles_in_memory } {
		set msg2 "and in-memory replication files"
	}

	foreach l $logsets {
		set args $saved_args
		puts "Rep$tnum ($method $args): Test internal\
		    initialization and elections $msg $msg2."
		puts "Rep$tnum: Master logs are [lindex $l 0]"
		puts "Rep$tnum: Client logs are [lindex $l 1]"
		rep069_sub $method $niter $tnum $l $args
	}
}

proc rep069_sub { method niter tnum logset largs } {
	global testdir
	global util_path
	global databases_in_memory
	global repfiles_in_memory
	global rep_verbose
	global verbose_type
	global timeout_ok

	env_cleanup $testdir

	set qdir $testdir/MSGQUEUEDIR
	replsetup $qdir

	set verbargs ""
	if { $rep_verbose == 1 } {
		set verbargs " -verbose {$verbose_type on} "
	}

	set repmemargs ""
	if { $repfiles_in_memory } {
		set repmemargs "-rep_inmem_files "
	}

	set masterdir $testdir/MASTERDIR
	file mkdir $masterdir

	set nclients 2
	for { set i 0 } { $i < $nclients } { incr i } {
		set clientdir($i) $testdir/CLIENTDIR.$i
		file mkdir $clientdir($i)
	}

	# Log size is small so we quickly create more than one, and
	# can easily force internal initialization.
	set pagesize 4096
	append largs " -pagesize $pagesize "
	set log_max [expr $pagesize * 8]

	set m_logtype [lindex $logset 0]
	set c_logtype [lindex $logset 1]

	# In-memory logs cannot be used with -txn nosync.
	set m_logargs [adjust_logargs $m_logtype]
	set c_logargs [adjust_logargs $c_logtype]
	set m_txnargs [adjust_txnargs $m_logtype]
	set c_txnargs [adjust_txnargs $c_logtype]

	# Open a master.
	set envlist {}
	repladd 1
	set ma_envcmd "berkdb_env_noerr -create $m_txnargs \
	    $repmemargs \
	    $m_logargs -log_max $log_max -event rep_event $verbargs \
	    -home $masterdir -rep_transport \[list 1 replsend\]"
	set masterenv [eval $ma_envcmd -recover -rep_master]
	lappend envlist "$masterenv 1"

	# Open clients.
	for { set i 0 } { $i < $nclients } { incr i } {
		set envid [expr $i + 2]
		repladd $envid
		set envcmd($i) "berkdb_env_noerr -create \
		    $repmemargs \
		    $c_txnargs $c_logargs -log_max $log_max \
		    -home $clientdir($i) -event rep_event $verbargs \
		    -rep_transport \[list $envid replsend\]"
		set clientenv($i) [eval $envcmd($i) -recover -rep_client]
		lappend envlist "$clientenv($i) $envid"
	}

	# Bring the clients online by processing the startup messages.
	process_msgs $envlist

	# Clobber replication's 30-second anti-archive timer, which will have
	# been started by client sync-up internal init, so that we can do a
	# db_archive in a moment.
	#
	$masterenv test force noarchive_timeout

	# Run rep_test in the master and update clients.
	puts "\tRep$tnum.a: Running rep_test in replicated env."
	set start 0
	eval rep_test \
	    $method $masterenv NULL $niter $start $start 0 $largs
	incr start $niter
	process_msgs $envlist 0 NONE err
	error_check_good process_msgs $err 0

        # Find out what exists on the client.  We need to loop until
        # the first master log file > last client log file.  The two
	# clients should be the same, so just inspect one.
        puts "\tRep$tnum.b: Close clients."
        if { $c_logtype != "in-memory" } {
                set res [eval exec $util_path/db_archive -l -h $clientdir(0)]
                set res [eval exec $util_path/db_archive -l -h $clientdir(1)]
        }
        set last_client_log [get_logfile $clientenv(1) last]
	for { set i 0 } { $i < $nclients } { incr i } {
		error_check_good client_close [$clientenv($i) close] 0
	}
	set envlist [lreplace $envlist 1 2]

	# Run the master forward.
	set stop 0
	while { $stop == 0 } {
		puts "\tRep$tnum.c: Running rep_test in replicated env."
		eval rep_test \
		    $method $masterenv NULL $niter $start $start 0 $largs
		incr start $niter

		puts "\tRep$tnum.d: Run db_archive on master."
                if { $m_logtype != "in-memory"} {
                        set res [eval \
			    exec $util_path/db_archive -d -h $masterdir]
                }
                set first_master_log [get_logfile $masterenv first]
                if { $first_master_log > $last_client_log } {
                        set stop 1
                }
        }

	for { set i 0 } { $i < $nclients } { incr i } {
		set envid [expr $i + 2]
		replclear $envid
	}

	# Reopen clients.
	puts "\tRep$tnum.e: Reopen clients."
	for { set i 0 } { $i < $nclients } { incr i } {
		env_cleanup $clientdir($i)
		set clientenv($i) [eval $envcmd($i) -recover -rep_client]
		set envid [expr $i + 2]
		lappend envlist "$clientenv($i) $envid"
	}

	# Run proc_msgs_once until both clients are in internal
	# initialization.
	#
	# We figure out whether each client is in initialization
	# by searching for any of the flags REP_F_RECOVER_UPDATE,
	# REP_F_RECOVER_PAGE, and REP_F_RECOVER_LOG.  As soon as
	# a client produces one of these, it's marked as being
	# in initialization, and stays that way even if it proceeds
	# further, but we don't exit the loop until all clients
	# have gotten into initialization.
	#
	puts "\tRep$tnum.f:\
	    Run proc_msgs_once until all clients enter internal init."
	set in_init 0
	for { set i 0 } { $i < $nclients } { incr i } {
		set initializing($i) 0
	}

	while { $in_init != 1 } {
		set nproced [proc_msgs_once $envlist NONE err]
		for { set i 0 } { $i < $nclients } { incr i } {
			set stat($i) \
			    [exec $util_path/db_stat -r -R A -h $clientdir(1)]
			if {[is_substr $stat($i) "REP_F_RECOVER_UPDATE"] } {
				set initializing($i) 1
			}
			if {[is_substr $stat($i) "REP_F_RECOVER_PAGE"] } {
				set initializing($i) 1
			}
			if {[is_substr $stat($i) "REP_F_RECOVER_LOG"] } {
				set initializing($i) 1
			}
		}
		set in_init 1
		for { set i 0 } { $i < $nclients } { incr i } {
			if { $initializing($i) == 0 } {
				set in_init 0
			}
		}
	}

	# Call an election.  It should fail, because both clients
	# are in internal initialization and therefore not electable.
	# Indicate failure with winner = -2.
	# First, close the master.
	error_check_good masterenv_close [$masterenv close] 0
	set envlist [lreplace $envlist 0 0]

        puts "\tRep$tnum.g: Run election; no one will get elected."
	set m "Rep$tnum.g"
        set nsites $nclients
        set nvotes $nclients
        set winner -2
        set elector 0
	for { set i 0 } { $i < $nclients } { incr i } {
		set err_cmd($i) "none"
		set crash($i) 0
		set pri($i) 10
	}

	# This election will time out instead of succeeding.
	set timeout_ok 1
	if { $databases_in_memory } {
		set dbname { "" "test.db" }
	} else {
		set dbname "test.db"
	}
        run_election envcmd envlist err_cmd pri crash \
            $qdir $m $elector $nsites $nvotes $nclients $winner \
	    0 $dbname 0 $timeout_ok

	# Verify that each client saw the message that no
	# electable site was found.
	puts "\tRep$tnum.h: Check for right error message."
	for { set i 0 } { $i < $nclients } { incr i } {
		set none_electable 0
		set id [expr $i + 1]
		set fd [open $testdir/ELECTION_RESULT.$id r]
		while { [gets $fd str] != -1 } {
			if { [is_substr $str "Unable to elect a master"] == 1 } {
				set none_electable 1
				break
			}
		}
		close $fd
		error_check_good none_electable $none_electable 1
	}

	# Clean up for the next pass.
	for { set i 0 } { $i < $nclients } { incr i } {
		$clientenv($i) close
	}

	replclose $testdir/MSGQUEUEDIR
}