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+# See the file LICENSE for redistribution information.
+#
+# Copyright (c) 2007-2009 Oracle. All rights reserved.
+#
+# $Id$
+#
+# TEST rep074
+# TEST Verify replication withstands send errors processing requests.
+# TEST
+# TEST Run for btree only because access method shouldn't matter.
+# TEST
+proc rep074 { method { niter 20 } { tnum "074" } args } {
+
+ source ./include.tcl
+ global databases_in_memory
+ global repfiles_in_memory
+
+ if { $is_windows9x_test == 1 } {
+ puts "Skipping replication test on Win9x platform."
+ return
+ }
+
+ # Skip for all methods except btree.
+ if { $checking_valid_methods } {
+ return btree
+ }
+ if { [is_btree $method] == 0 } {
+ puts "Rep$tnum: skipping for non-btree method $method."
+ return
+ }
+
+ set args [convert_args $method $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 $logsets {
+ puts "Rep$tnum ($method): Test of send errors processing\
+ requests $msg $msg2."
+ puts "Rep$tnum: Master logs are [lindex $l 0]"
+ puts "Rep$tnum: Client logs are [lindex $l 1]"
+ rep074_sub $method $niter $tnum $l $args
+ }
+}
+
+proc rep074_sub { method niter tnum logset largs } {
+ global testdir
+ global rep074_failure_count
+ global repfiles_in_memory
+ global rep_verbose
+ global verbose_type
+
+ set rep074_failure_count -1
+
+ set verbargs ""
+ if { $rep_verbose == 1 } {
+ set verbargs " -verbose {$verbose_type on} "
+ }
+
+ set repmemargs ""
+ if { $repfiles_in_memory } {
+ set repmemargs "-rep_inmem_files "
+ }
+
+ env_cleanup $testdir
+
+ replsetup $testdir/MSGQUEUEDIR
+
+ set masterdir $testdir/MASTERDIR
+ set clientdir $testdir/CLIENTDIR
+
+ file mkdir $masterdir
+ file mkdir $clientdir
+
+ set m_logtype [lindex $logset 0]
+ set c_logtype [lindex $logset 1]
+
+ # In-memory logs require a large log buffer, and cannot
+ # be used with -txn nosync. Adjust the args for master
+ # and client.
+ 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.
+ repladd 1
+ set ma_envcmd "berkdb_env_noerr -create $verbargs -errpfx MASTER \
+ -home $masterdir $m_logargs $m_txnargs $repmemargs \
+ -rep_transport \[list 1 rep074_replsend\]"
+ set masterenv [eval $ma_envcmd -rep_master]
+
+ # Create some new records, so that the master will have something
+ # substantial to say when asked for LOG_REQ.
+ #
+ puts "\tRep$tnum.a: Running rep_test in replicated env."
+ eval rep_test $method $masterenv NULL $niter 0 0 0 $largs
+
+ # Open a client
+ repladd 2
+ set cl_envcmd "berkdb_env_noerr -create $verbargs -errpfx CLIENT \
+ -home $clientdir $c_logargs $c_txnargs $repmemargs \
+ -rep_transport \[list 2 replsend\]"
+ set clientenv [eval $cl_envcmd -rep_client]
+ set envlist "{$masterenv 1} {$clientenv 2}"
+
+ # Bring the client online by processing the startup messages. This will
+ # cause the client to send a request to the master.
+ #
+ # In the first cycle, the client gets NEWMASTER and sends an UPDATE_REQ.
+ # In the second cycle, the master answers the UPDATE_REQ with an UPDATE,
+ # and the client sends a PAGE_REQ. Third, once we've gotten pages, we
+ # send a LOG_REQ.
+ #
+ # 1. NEWCLIENT -> NEWMASTER -> UPDATE_REQ
+ # 2. UPDATE -> PAGE_REQ
+ # 3. PAGE -> LOG_REQ
+ #
+ puts "\tRep$tnum.b: NEWMASTER -> UPDATE_REQ"
+ proc_msgs_once $envlist
+ puts "\tRep$tnum.c: UPDATE -> PAGE_REQ"
+ proc_msgs_once $envlist
+ puts "\tRep$tnum.d: PAGE -> LOG_REQ"
+ proc_msgs_once $envlist
+
+ # Force a sending error at the master while processing the LOG_REQ.
+ # We should ignore it, and return success to rep_process_message
+ #
+ puts "\tRep$tnum.e: Simulate a send error."
+ set rep074_failure_count [expr $niter / 2]
+ proc_msgs_once $envlist NONE errorp
+
+ puts "\tRep$tnum.f: Check for good return from rep_process_msg."
+ error_check_good rep_resilient $errorp 0
+
+ # Since we interrupted the flow with the simulated error, we don't have
+ # the log records we need yet.
+ #
+ error_check_bad startupdone \
+ [stat_field $clientenv rep_stat "Startup complete"] 1
+
+ #
+ # Run some more new txns at the master, so that the client eventually
+ # decides to request the remainder of the LOG_REQ response that it's
+ # missing. Pause for a second to make sure we reach the lower
+ # threshold for re-request on fast machines. We need to force a
+ # checkpoint because we need to create a gap, and then pause to
+ # reach the rerequest threshold.
+ #
+ set rep074_failure_count -1
+ $masterenv txn_checkpoint -force
+ process_msgs $envlist
+ tclsleep 1
+ eval rep_test $method $masterenv NULL $niter 0 0 0 $largs
+ process_msgs $envlist
+
+ error_check_good startupdone \
+ [stat_field $clientenv rep_stat "Startup complete"] 1
+
+ $masterenv close
+ $clientenv close
+ replclose $testdir/MSGQUEUEDIR
+}
+
+# Failure count < 0 turns off any special failure simulation processing.
+# When the count is > 0, it means we should process that many messages normally,
+# before invoking a failure.
+#
+proc rep074_replsend { control rec fromid toid flags lsn } {
+ global rep074_failure_count
+
+ if { $rep074_failure_count < 0 } {
+ return [replsend $control $rec $fromid $toid $flags $lsn]
+ }
+
+ if { $rep074_failure_count > 0 } {
+ incr rep074_failure_count -1
+ return [replsend $control $rec $fromid $toid $flags $lsn]
+ }
+
+ # Return an arbitrary non-zero value to indicate an error.
+ return 1
+}