[dbsrgits/DBIx-Class.git] / t / 93storage_replication.t

use strict;
use warnings;
use lib qw(t/lib);
use Test::More;
use DBICTest;

BEGIN {
    eval "use Moose; use Test::Moose";
    plan $@
        ? ( skip_all => 'needs Moose for testing' )
        : ( tests => 50 );
}

use_ok 'DBIx::Class::Storage::DBI::Replicated::Pool';
use_ok 'DBIx::Class::Storage::DBI::Replicated::Balancer';
use_ok 'DBIx::Class::Storage::DBI::Replicated::Replicant';
use_ok 'DBIx::Class::Storage::DBI::Replicated';

=head1 HOW TO USE

    This is a test of the replicated storage system.  This will work in one of
    two ways, either it was try to fake replication with a couple of SQLite DBs
    and creative use of copy, or if you define a couple of %ENV vars correctly
    will try to test those.  If you do that, it will assume the setup is properly
    replicating.  Your results may vary, but I have demonstrated this to work with
    mysql native replication.
    
=cut


## ----------------------------------------------------------------------------
## Build a class to hold all our required testing data and methods.
## ----------------------------------------------------------------------------

TESTSCHEMACLASSES: {

    ## --------------------------------------------------------------------- ##
    ## Create an object to contain your replicated stuff.
    ## --------------------------------------------------------------------- ##
    
    package DBIx::Class::DBI::Replicated::TestReplication;
   
    use DBICTest;
    use base qw/Class::Accessor::Fast/;
    
    __PACKAGE__->mk_accessors( qw/schema/ );

    ## Initialize the object
    
	sub new {
	    my $class = shift @_;
	    my $self = $class->SUPER::new(@_);
	
	    $self->schema( $self->init_schema );
	    return $self;
	}
    
    ## Get the Schema and set the replication storage type
    
    sub init_schema {
        my $class = shift @_;
        
        my $schema = DBICTest->init_schema(
            storage_type=>[
            	'::DBI::Replicated' => {
            		balancer_type=>'::Random',
                    balancer_args=>{
                    	auto_validate_every=>100,
                    },
            	}
            ],
            deploy_args=>{
                   add_drop_table => 1,
            },
        );

        return $schema;
    }
    
    sub generate_replicant_connect_info {}
    sub replicate {}
    sub cleanup {}

  
    ## --------------------------------------------------------------------- ##
    ## Subclass for when you are using SQLite for testing, this provides a fake
    ## replication support.
    ## --------------------------------------------------------------------- ##
        
    package DBIx::Class::DBI::Replicated::TestReplication::SQLite;

    use DBICTest;
    use File::Copy;    
    use base 'DBIx::Class::DBI::Replicated::TestReplication';
    
    __PACKAGE__->mk_accessors( qw/master_path slave_paths/ );
    
    ## Set the mastep path from DBICTest
    
	sub new {
	    my $class = shift @_;
	    my $self = $class->SUPER::new(@_);
	
	    $self->master_path( DBICTest->_sqlite_dbfilename );
	    $self->slave_paths([
            "t/var/DBIxClass_slave1.db",
            "t/var/DBIxClass_slave2.db",    
        ]);
        
	    return $self;
	}    
	
    ## Return an Array of ArrayRefs where each ArrayRef is suitable to use for
    ## $storage->connect_info to be used for connecting replicants.
    
    sub generate_replicant_connect_info {
        my $self = shift @_;
        my @dsn = map {
            "dbi:SQLite:${_}";
        } @{$self->slave_paths};
        
        return map { [$_,'','',{AutoCommit=>1}] } @dsn;
    }
    
    ## Do a 'good enough' replication by copying the master dbfile over each of
    ## the slave dbfiles.  If the master is SQLite we do this, otherwise we
    ## just do a one second pause to let the slaves catch up.
    
    sub replicate {
        my $self = shift @_;
        foreach my $slave (@{$self->slave_paths}) {
            copy($self->master_path, $slave);
        }
    }
    
    ## Cleanup after ourselves.  Unlink all gthe slave paths.
    
    sub cleanup {
        my $self = shift @_;
        foreach my $slave (@{$self->slave_paths}) {
            unlink $slave;
        }     
    }
    
    ## --------------------------------------------------------------------- ##
    ## Subclass for when you are setting the databases via custom export vars
    ## This is for when you have a replicating database setup that you are
    ## going to test against.  You'll need to define the correct $ENV and have
    ## two slave databases to test against, as well as a replication system
    ## that will replicate in less than 1 second.
    ## --------------------------------------------------------------------- ##
        
    package DBIx::Class::DBI::Replicated::TestReplication::Custom; 
    use base 'DBIx::Class::DBI::Replicated::TestReplication';
    
    ## Return an Array of ArrayRefs where each ArrayRef is suitable to use for
    ## $storage->connect_info to be used for connecting replicants.
    
    sub generate_replicant_connect_info { 
        return (
            [$ENV{"DBICTEST_SLAVE0_DSN"}, $ENV{"DBICTEST_SLAVE0_DBUSER"}, $ENV{"DBICTEST_SLAVE0_DBPASS"}, {AutoCommit => 1}],
            [$ENV{"DBICTEST_SLAVE1_DSN"}, $ENV{"DBICTEST_SLAVE1_DBUSER"}, $ENV{"DBICTEST_SLAVE1_DBPASS"}, {AutoCommit => 1}],           
        );
    }
    
    ## pause a bit to let the replication catch up 
    
    sub replicate {
    	sleep 1;
    } 
}

## ----------------------------------------------------------------------------
## Create an object and run some tests
## ----------------------------------------------------------------------------

## Thi first bunch of tests are basic, just make sure all the bits are behaving

my $replicated_class = DBICTest->has_custom_dsn ?
    'DBIx::Class::DBI::Replicated::TestReplication::Custom' :
    'DBIx::Class::DBI::Replicated::TestReplication::SQLite';

ok my $replicated = $replicated_class->new
    => 'Created a replication object';
    
isa_ok $replicated->schema
    => 'DBIx::Class::Schema';
    
isa_ok $replicated->schema->storage
    => 'DBIx::Class::Storage::DBI::Replicated';

ok $replicated->schema->storage->meta
    => 'has a meta object';
    
isa_ok $replicated->schema->storage->master
    => 'DBIx::Class::Storage::DBI';
    
isa_ok $replicated->schema->storage->pool
    => 'DBIx::Class::Storage::DBI::Replicated::Pool';
    
does_ok $replicated->schema->storage->balancer
    => 'DBIx::Class::Storage::DBI::Replicated::Balancer'; 

ok my @replicant_connects = $replicated->generate_replicant_connect_info
    => 'got replication connect information';

ok my @replicated_storages = $replicated->schema->storage->connect_replicants(@replicant_connects)
    => 'Created some storages suitable for replicants';
    
isa_ok $replicated->schema->storage->balancer->current_replicant
    => 'DBIx::Class::Storage::DBI';
    
ok $replicated->schema->storage->pool->has_replicants
    => 'does have replicants';     

is $replicated->schema->storage->pool->num_replicants => 2
    => 'has two replicants';
       
does_ok $replicated_storages[0]
    => 'DBIx::Class::Storage::DBI::Replicated::Replicant';

does_ok $replicated_storages[1]
    => 'DBIx::Class::Storage::DBI::Replicated::Replicant';
    
my @replicant_names = keys %{$replicated->schema->storage->replicants};

does_ok $replicated->schema->storage->replicants->{$replicant_names[0]}
    => 'DBIx::Class::Storage::DBI::Replicated::Replicant';

does_ok $replicated->schema->storage->replicants->{$replicant_names[1]}
    => 'DBIx::Class::Storage::DBI::Replicated::Replicant';  

## Add some info to the database

$replicated
    ->schema
    ->populate('Artist', [
        [ qw/artistid name/ ],
        [ 4, "Ozric Tentacles"],
    ]);
                
## Make sure all the slaves have the table definitions

$replicated->replicate;

## Make sure we can read the data.

ok my $artist1 = $replicated->schema->resultset('Artist')->find(4)
    => 'Created Result';

isa_ok $artist1
    => 'DBICTest::Artist';
    
is $artist1->name, 'Ozric Tentacles'
    => 'Found expected name for first result';

## Add some new rows that only the master will have  This is because
## we overload any type of write operation so that is must hit the master
## database.

$replicated
    ->schema
    ->populate('Artist', [
        [ qw/artistid name/ ],
        [ 5, "Doom's Children"],
        [ 6, "Dead On Arrival"],
        [ 7, "Watergate"],
    ]);

SKIP: {
    ## We can't do this test if we have a custom replicants, since we assume
    ## if there are custom one that you are trying to test a real replicating
    ## system.  See docs above for more.
    
    skip 'Cannot test inconsistent replication since you have a real replication system', 1
     if DBICTest->has_custom_dsn && $ENV{"DBICTEST_SLAVE0_DSN"};
    
	## Alright, the database 'cluster' is not in a consistent state.  When we do
	## a read now we expect bad news    
    is $replicated->schema->resultset('Artist')->find(5), undef
    => 'read after disconnect fails because it uses a replicant which we have neglected to "replicate" yet'; 
}

## Make sure all the slaves have the table definitions
$replicated->replicate;

## Should find some data now

ok my $artist2 = $replicated->schema->resultset('Artist')->find(5)
    => 'Sync succeed';
    
isa_ok $artist2
    => 'DBICTest::Artist';
    
is $artist2->name, "Doom's Children"
    => 'Found expected name for first result';

## What happens when we disconnect all the replicants?

is $replicated->schema->storage->pool->connected_replicants => 2
    => "both replicants are connected";
    
$replicated->schema->storage->replicants->{$replicant_names[0]}->disconnect;
$replicated->schema->storage->replicants->{$replicant_names[1]}->disconnect;

is $replicated->schema->storage->pool->connected_replicants => 0
    => "both replicants are now disconnected";

## All these should pass, since the database should automatically reconnect

ok my $artist3 = $replicated->schema->resultset('Artist')->find(6)
    => 'Still finding stuff.';
    
isa_ok $artist3
    => 'DBICTest::Artist';
    
is $artist3->name, "Dead On Arrival"
    => 'Found expected name for first result';

is $replicated->schema->storage->pool->connected_replicants => 1
    => "One replicant reconnected to handle the job";
    
## What happens when we try to select something that doesn't exist?

ok ! $replicated->schema->resultset('Artist')->find(666)
    => 'Correctly failed to find something.';
    
## test the reliable option

TESTRELIABLE: {
	
	$replicated->schema->storage->set_reliable_storage;
	
	ok $replicated->schema->resultset('Artist')->find(2)
	    => 'Read from master 1';
	
	ok $replicated->schema->resultset('Artist')->find(5)
	    => 'Read from master 2';
	    
    $replicated->schema->storage->set_balanced_storage;	    
	    
	ok $replicated->schema->resultset('Artist')->find(3)
        => 'Read from replicant';
}

## Make sure when reliable goes out of scope, we are using replicants again

ok $replicated->schema->resultset('Artist')->find(1)
    => 'back to replicant 1.';
    
ok $replicated->schema->resultset('Artist')->find(2)
    => 'back to replicant 2.';

## set all the replicants to inactive, and make sure the balancer falls back to
## the master.

$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
    
ok $replicated->schema->resultset('Artist')->find(2)
    => 'Fallback to master';

$replicated->schema->storage->replicants->{$replicant_names[0]}->active(1);
$replicated->schema->storage->replicants->{$replicant_names[1]}->active(1);

ok $replicated->schema->resultset('Artist')->find(2)
    => 'Returned to replicates';
    
## Getting slave status tests

SKIP: {
    ## We skip this tests unless you have a custom replicants, since the default
    ## sqlite based replication tests don't support these functions.
    
    skip 'Cannot Test Replicant Status on Non Replicating Database', 9
     unless DBICTest->has_custom_dsn && $ENV{"DBICTEST_SLAVE0_DSN"};

    $replicated->replicate; ## Give the slaves a chance to catchup.

	ok $replicated->schema->storage->replicants->{$replicant_names[0]}->is_replicating
	    => 'Replicants are replicating';
	    
	is $replicated->schema->storage->replicants->{$replicant_names[0]}->lag_behind_master, 0
	    => 'Replicant is zero seconds behind master';
	    
	## Test the validate replicants
	
	$replicated->schema->storage->pool->validate_replicants;
	
	is $replicated->schema->storage->pool->active_replicants, 2
	    => 'Still have 2 replicants after validation';
	    
	## Force the replicants to fail the validate test by required their lag to
	## be negative (ie ahead of the master!)
	
    $replicated->schema->storage->pool->maximum_lag(-10);
    $replicated->schema->storage->pool->validate_replicants;
    
    is $replicated->schema->storage->pool->active_replicants, 0
        => 'No way a replicant be be ahead of the master';
        
    ## Let's be fair to the replicants again.  Let them lag up to 5
	
    $replicated->schema->storage->pool->maximum_lag(5);
    $replicated->schema->storage->pool->validate_replicants;
    
    is $replicated->schema->storage->pool->active_replicants, 2
        => 'Both replicants in good standing again';	
        
	## Check auto validate
	
	is $replicated->schema->storage->balancer->auto_validate_every, 100
	    => "Got the expected value for auto validate";
	    
		## This will make sure we auto validatge everytime
		$replicated->schema->storage->balancer->auto_validate_every(0);
		
		## set all the replicants to inactive, and make sure the balancer falls back to
		## the master.
		
		$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
		$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
		
		## Ok, now when we go to run a query, autovalidate SHOULD reconnect
	
	is $replicated->schema->storage->pool->active_replicants => 0
	    => "both replicants turned off";
	    	
	ok $replicated->schema->resultset('Artist')->find(5)
	    => 'replicant reactivated';
	    
	is $replicated->schema->storage->pool->active_replicants => 2
	    => "both replicants reactivated";        
}

## Delete the old database files
$replicated->cleanup;
Commit	Line	Data
e4dc89b3	1	use strict;
	2	use warnings;
	3	use lib qw(t/lib);
e4dc89b3	4	use Test::More;
857d66ca	5	use DBICTest;
8f7986d6	6
86583fa7	7	BEGIN {
de5dc9ef	8	eval "use Moose; use Test::Moose";
86583fa7	9	plan $@
2bf79155	10	? ( skip_all => 'needs Moose for testing' )
17b05c13	11	: ( tests => 50 );
26ab719a	12	}
	13
	14	use_ok 'DBIx::Class::Storage::DBI::Replicated::Pool';
	15	use_ok 'DBIx::Class::Storage::DBI::Replicated::Balancer';
	16	use_ok 'DBIx::Class::Storage::DBI::Replicated::Replicant';
	17	use_ok 'DBIx::Class::Storage::DBI::Replicated';
0f83441a	18
89cf6a70	19	=head1 HOW TO USE
	20
	21	This is a test of the replicated storage system. This will work in one of
	22	two ways, either it was try to fake replication with a couple of SQLite DBs
	23	and creative use of copy, or if you define a couple of %ENV vars correctly
	24	will try to test those. If you do that, it will assume the setup is properly
	25	replicating. Your results may vary, but I have demonstrated this to work with
	26	mysql native replication.
	27
	28	=cut
	29
	30
0f83441a	31	## ----------------------------------------------------------------------------
	32	## Build a class to hold all our required testing data and methods.
	33	## ----------------------------------------------------------------------------
	34
857d66ca	35	TESTSCHEMACLASSES: {
2bf79155	36
857d66ca	37	## --------------------------------------------------------------------- ##
	38	## Create an object to contain your replicated stuff.
	39	## --------------------------------------------------------------------- ##
	40
2bf79155	41	package DBIx::Class::DBI::Replicated::TestReplication;
	42
	43	use DBICTest;
	44	use base qw/Class::Accessor::Fast/;
	45
857d66ca	46	__PACKAGE__->mk_accessors( qw/schema/ );
2bf79155	47
	48	## Initialize the object
	49
	50	sub new {
26ab719a	51	my $class = shift @_;
26ab719a	52	my $self = $class->SUPER::new(@_);
2bf79155	53
2bf79155	54	$self->schema( $self->init_schema );
2bf79155	55	return $self;
	56	}
	57
26ab719a	58	## Get the Schema and set the replication storage type
2bf79155	59
	60	sub init_schema {
	61	my $class = shift @_;
89cf6a70	62
cb6ec758	63	my $schema = DBICTest->init_schema(
106d5f3b	64	storage_type=>[
	65	'::DBI::Replicated' => {
	66	balancer_type=>'::Random',
17b05c13	67	balancer_args=>{
	68	auto_validate_every=>100,
	69	},
89cf6a70	70	}
	71	],
	72	deploy_args=>{
	73	add_drop_table => 1,
	74	},
	75	);
cb6ec758	76
2bf79155	77	return $schema;
2bf79155	78	}
26ab719a	79
857d66ca	80	sub generate_replicant_connect_info {}
	81	sub replicate {}
	82	sub cleanup {}
	83
	84
	85	## --------------------------------------------------------------------- ##
	86	## Subclass for when you are using SQLite for testing, this provides a fake
	87	## replication support.
	88	## --------------------------------------------------------------------- ##
	89
	90	package DBIx::Class::DBI::Replicated::TestReplication::SQLite;
	91
	92	use DBICTest;
	93	use File::Copy;
	94	use base 'DBIx::Class::DBI::Replicated::TestReplication';
	95
	96	__PACKAGE__->mk_accessors( qw/master_path slave_paths/ );
	97
	98	## Set the mastep path from DBICTest
	99
	100	sub new {
	101	my $class = shift @_;
	102	my $self = $class->SUPER::new(@_);
	103
	104	$self->master_path( DBICTest->_sqlite_dbfilename );
	105	$self->slave_paths([
	106	"t/var/DBIxClass_slave1.db",
	107	"t/var/DBIxClass_slave2.db",
	108	]);
	109
	110	return $self;
	111	}
	112
26ab719a	113	## Return an Array of ArrayRefs where each ArrayRef is suitable to use for
	114	## $storage->connect_info to be used for connecting replicants.
	115
	116	sub generate_replicant_connect_info {
857d66ca	117	my $self = shift @_;
26ab719a	118	my @dsn = map {
	119	"dbi:SQLite:${_}";
	120	} @{$self->slave_paths};
	121
857d66ca	122	return map { [$_,'','',{AutoCommit=>1}] } @dsn;
26ab719a	123	}
	124
	125	## Do a 'good enough' replication by copying the master dbfile over each of
50336325	126	## the slave dbfiles. If the master is SQLite we do this, otherwise we
50336325	127	## just do a one second pause to let the slaves catch up.
26ab719a	128
	129	sub replicate {
	130	my $self = shift @_;
	131	foreach my $slave (@{$self->slave_paths}) {
	132	copy($self->master_path, $slave);
	133	}
	134	}
	135
	136	## Cleanup after ourselves. Unlink all gthe slave paths.
	137
	138	sub cleanup {
	139	my $self = shift @_;
	140	foreach my $slave (@{$self->slave_paths}) {
	141	unlink $slave;
	142	}
	143	}
857d66ca	144
	145	## --------------------------------------------------------------------- ##
	146	## Subclass for when you are setting the databases via custom export vars
	147	## This is for when you have a replicating database setup that you are
	148	## going to test against. You'll need to define the correct $ENV and have
	149	## two slave databases to test against, as well as a replication system
	150	## that will replicate in less than 1 second.
	151	## --------------------------------------------------------------------- ##
	152
	153	package DBIx::Class::DBI::Replicated::TestReplication::Custom;
	154	use base 'DBIx::Class::DBI::Replicated::TestReplication';
	155
	156	## Return an Array of ArrayRefs where each ArrayRef is suitable to use for
	157	## $storage->connect_info to be used for connecting replicants.
	158
	159	sub generate_replicant_connect_info {
	160	return (
	161	[$ENV{"DBICTEST_SLAVE0_DSN"}, $ENV{"DBICTEST_SLAVE0_DBUSER"}, $ENV{"DBICTEST_SLAVE0_DBPASS"}, {AutoCommit => 1}],
	162	[$ENV{"DBICTEST_SLAVE1_DSN"}, $ENV{"DBICTEST_SLAVE1_DBUSER"}, $ENV{"DBICTEST_SLAVE1_DBPASS"}, {AutoCommit => 1}],
	163	);
	164	}
	165
	166	## pause a bit to let the replication catch up
	167
	168	sub replicate {
	169	sleep 1;
	170	}
2bf79155	171	}
	172
	173	## ----------------------------------------------------------------------------
	174	## Create an object and run some tests
	175	## ----------------------------------------------------------------------------
	176
26ab719a	177	## Thi first bunch of tests are basic, just make sure all the bits are behaving
2bf79155	178
857d66ca	179	my $replicated_class = DBICTest->has_custom_dsn ?
	180	'DBIx::Class::DBI::Replicated::TestReplication::Custom' :
	181	'DBIx::Class::DBI::Replicated::TestReplication::SQLite';
	182
	183	ok my $replicated = $replicated_class->new
	184	=> 'Created a replication object';
2bf79155	185
26ab719a	186	isa_ok $replicated->schema
2bf79155	187	=> 'DBIx::Class::Schema';
2bf79155	188
26ab719a	189	isa_ok $replicated->schema->storage
	190	=> 'DBIx::Class::Storage::DBI::Replicated';
	191
	192	ok $replicated->schema->storage->meta
	193	=> 'has a meta object';
	194
	195	isa_ok $replicated->schema->storage->master
	196	=> 'DBIx::Class::Storage::DBI';
	197
	198	isa_ok $replicated->schema->storage->pool
	199	=> 'DBIx::Class::Storage::DBI::Replicated::Pool';
	200
17b05c13	201	does_ok $replicated->schema->storage->balancer
26ab719a	202	=> 'DBIx::Class::Storage::DBI::Replicated::Balancer';
	203
	204	ok my @replicant_connects = $replicated->generate_replicant_connect_info
	205	=> 'got replication connect information';
	206
955a6df6	207	ok my @replicated_storages = $replicated->schema->storage->connect_replicants(@replicant_connects)
26ab719a	208	=> 'Created some storages suitable for replicants';
26ab719a	209
cb6ec758	210	isa_ok $replicated->schema->storage->balancer->current_replicant
26ab719a	211	=> 'DBIx::Class::Storage::DBI';
	212
	213	ok $replicated->schema->storage->pool->has_replicants
	214	=> 'does have replicants';
	215
17b05c13	216	is $replicated->schema->storage->pool->num_replicants => 2
26ab719a	217	=> 'has two replicants';
26ab719a	218
de5dc9ef	219	does_ok $replicated_storages[0]
26ab719a	220	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
26ab719a	221
de5dc9ef	222	does_ok $replicated_storages[1]
26ab719a	223	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
26ab719a	224
89cf6a70	225	my @replicant_names = keys %{$replicated->schema->storage->replicants};
de5dc9ef	226
de5dc9ef	227	does_ok $replicated->schema->storage->replicants->{$replicant_names[0]}
26ab719a	228	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
26ab719a	229
de5dc9ef	230	does_ok $replicated->schema->storage->replicants->{$replicant_names[1]}
26ab719a	231	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
	232
	233	## Add some info to the database
	234
	235	$replicated
	236	->schema
	237	->populate('Artist', [
	238	[ qw/artistid name/ ],
	239	[ 4, "Ozric Tentacles"],
	240	]);
	241
	242	## Make sure all the slaves have the table definitions
	243
	244	$replicated->replicate;
	245
	246	## Make sure we can read the data.
	247
	248	ok my $artist1 = $replicated->schema->resultset('Artist')->find(4)
	249	=> 'Created Result';
	250
	251	isa_ok $artist1
	252	=> 'DBICTest::Artist';
	253
	254	is $artist1->name, 'Ozric Tentacles'
	255	=> 'Found expected name for first result';
	256
	257	## Add some new rows that only the master will have This is because
	258	## we overload any type of write operation so that is must hit the master
	259	## database.
	260
	261	$replicated
	262	->schema
	263	->populate('Artist', [
	264	[ qw/artistid name/ ],
	265	[ 5, "Doom's Children"],
	266	[ 6, "Dead On Arrival"],
	267	[ 7, "Watergate"],
	268	]);
	269
89cf6a70	270	SKIP: {
	271	## We can't do this test if we have a custom replicants, since we assume
	272	## if there are custom one that you are trying to test a real replicating
	273	## system. See docs above for more.
	274
	275	skip 'Cannot test inconsistent replication since you have a real replication system', 1
	276	if DBICTest->has_custom_dsn && $ENV{"DBICTEST_SLAVE0_DSN"};
	277
	278	## Alright, the database 'cluster' is not in a consistent state. When we do
	279	## a read now we expect bad news
	280	is $replicated->schema->resultset('Artist')->find(5), undef
	281	=> 'read after disconnect fails because it uses a replicant which we have neglected to "replicate" yet';
	282	}
26ab719a	283
	284	## Make sure all the slaves have the table definitions
	285	$replicated->replicate;
	286
	287	## Should find some data now
	288
	289	ok my $artist2 = $replicated->schema->resultset('Artist')->find(5)
	290	=> 'Sync succeed';
	291
	292	isa_ok $artist2
	293	=> 'DBICTest::Artist';
	294
	295	is $artist2->name, "Doom's Children"
	296	=> 'Found expected name for first result';
	297
	298	## What happens when we disconnect all the replicants?
	299
50336325	300	is $replicated->schema->storage->pool->connected_replicants => 2
	301	=> "both replicants are connected";
	302
89cf6a70	303	$replicated->schema->storage->replicants->{$replicant_names[0]}->disconnect;
89cf6a70	304	$replicated->schema->storage->replicants->{$replicant_names[1]}->disconnect;
26ab719a	305
50336325	306	is $replicated->schema->storage->pool->connected_replicants => 0
	307	=> "both replicants are now disconnected";
	308
	309	## All these should pass, since the database should automatically reconnect
	310
26ab719a	311	ok my $artist3 = $replicated->schema->resultset('Artist')->find(6)
26ab719a	312	=> 'Still finding stuff.';
2bf79155	313
26ab719a	314	isa_ok $artist3
26ab719a	315	=> 'DBICTest::Artist';
2bf79155	316
26ab719a	317	is $artist3->name, "Dead On Arrival"
26ab719a	318	=> 'Found expected name for first result';
2bf79155	319
50336325	320	is $replicated->schema->storage->pool->connected_replicants => 1
50336325	321	=> "One replicant reconnected to handle the job";
6f6fb437	322
	323	## What happens when we try to select something that doesn't exist?
	324
	325	ok ! $replicated->schema->resultset('Artist')->find(666)
	326	=> 'Correctly failed to find something.';
cb6ec758	327
	328	## test the reliable option
	329
	330	TESTRELIABLE: {
	331
	332	$replicated->schema->storage->set_reliable_storage;
	333
	334	ok $replicated->schema->resultset('Artist')->find(2)
	335	=> 'Read from master 1';
	336
	337	ok $replicated->schema->resultset('Artist')->find(5)
	338	=> 'Read from master 2';
	339
	340	$replicated->schema->storage->set_balanced_storage;
	341
	342	ok $replicated->schema->resultset('Artist')->find(3)
9c748388	343	=> 'Read from replicant';
cb6ec758	344	}
cb6ec758	345
9c748388	346	## Make sure when reliable goes out of scope, we are using replicants again
cb6ec758	347
	348	ok $replicated->schema->resultset('Artist')->find(1)
	349	=> 'back to replicant 1.';
	350
	351	ok $replicated->schema->resultset('Artist')->find(2)
	352	=> 'back to replicant 2.';
2156bbdd	353
106d5f3b	354	## set all the replicants to inactive, and make sure the balancer falls back to
	355	## the master.
	356
89cf6a70	357	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
89cf6a70	358	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
106d5f3b	359
106d5f3b	360	ok $replicated->schema->resultset('Artist')->find(2)
de5dc9ef	361	=> 'Fallback to master';
	362
	363	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(1);
	364	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(1);
	365
	366	ok $replicated->schema->resultset('Artist')->find(2)
	367	=> 'Returned to replicates';
	368
	369	## Getting slave status tests
	370
f797e89e	371	SKIP: {
	372	## We skip this tests unless you have a custom replicants, since the default
	373	## sqlite based replication tests don't support these functions.
	374
17b05c13	375	skip 'Cannot Test Replicant Status on Non Replicating Database', 9
f797e89e	376	unless DBICTest->has_custom_dsn && $ENV{"DBICTEST_SLAVE0_DSN"};
	377
	378	$replicated->replicate; ## Give the slaves a chance to catchup.
	379
	380	ok $replicated->schema->storage->replicants->{$replicant_names[0]}->is_replicating
	381	=> 'Replicants are replicating';
	382
	383	is $replicated->schema->storage->replicants->{$replicant_names[0]}->lag_behind_master, 0
	384	=> 'Replicant is zero seconds behind master';
7edf5f1c	385
	386	## Test the validate replicants
	387
	388	$replicated->schema->storage->pool->validate_replicants;
	389
	390	is $replicated->schema->storage->pool->active_replicants, 2
	391	=> 'Still have 2 replicants after validation';
	392
	393	## Force the replicants to fail the validate test by required their lag to
	394	## be negative (ie ahead of the master!)
	395
	396	$replicated->schema->storage->pool->maximum_lag(-10);
	397	$replicated->schema->storage->pool->validate_replicants;
	398
	399	is $replicated->schema->storage->pool->active_replicants, 0
	400	=> 'No way a replicant be be ahead of the master';
	401
	402	## Let's be fair to the replicants again. Let them lag up to 5
	403
	404	$replicated->schema->storage->pool->maximum_lag(5);
	405	$replicated->schema->storage->pool->validate_replicants;
	406
	407	is $replicated->schema->storage->pool->active_replicants, 2
	408	=> 'Both replicants in good standing again';
17b05c13	409
	410	## Check auto validate
	411
	412	is $replicated->schema->storage->balancer->auto_validate_every, 100
	413	=> "Got the expected value for auto validate";
	414
	415	## This will make sure we auto validatge everytime
	416	$replicated->schema->storage->balancer->auto_validate_every(0);
	417
	418	## set all the replicants to inactive, and make sure the balancer falls back to
	419	## the master.
	420
	421	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
	422	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
	423
	424	## Ok, now when we go to run a query, autovalidate SHOULD reconnect
	425
	426	is $replicated->schema->storage->pool->active_replicants => 0
	427	=> "both replicants turned off";
	428
	429	ok $replicated->schema->resultset('Artist')->find(5)
	430	=> 'replicant reactivated';
	431
	432	is $replicated->schema->storage->pool->active_replicants => 2
	433	=> "both replicants reactivated";
f797e89e	434	}
f797e89e	435
0f83441a	436	## Delete the old database files
50336325	437	$replicated->cleanup;
0f83441a	438
	439
	440
	441
	442
	443