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

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

BEGIN {
    eval "use Moose; use Test::Moose";
    plan $@
        ? ( skip_all => 'needs Moose for testing' )
        : ( tests => 57 );
}

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";        
}

## Test the reliably callback

ok my $reliably = sub {
	
    ok $replicated->schema->resultset('Artist')->find(5)
        => 'replicant reactivated';	
	
} => 'created coderef properly';

$replicated->schema->storage->execute_reliably($reliably);

## Try something with an error

ok my $unreliably = sub {
    
    ok $replicated->schema->resultset('ArtistXX')->find(5)
        => 'replicant reactivated'; 
    
} => 'created coderef properly';

throws_ok {$replicated->schema->storage->execute_reliably($unreliably)} 
    qr/coderef returned an error: Can't find source for ArtistXX/
    => 'Bad coderef throws proper error';
    
## make sure transactions are set to execute_reliably

ok my $transaction = sub {
	
	$replicated
	    ->schema
	    ->populate('Artist', [
	        [ qw/artistid name/ ],
	        [ 666, "Children of the Grave"],
	    ]);
	    
   ok my $result = $replicated->schema->resultset('Artist')->find(666);
   
};

$replicated->schema->txn_do($transaction);

## Make sure replication came back

ok $replicated->schema->resultset('Artist')->find(5)
    => 'replicant 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;
c4d3fae2	5	use Test::Exception;
857d66ca	6	use DBICTest;
8f7986d6	7
86583fa7	8	BEGIN {
de5dc9ef	9	eval "use Moose; use Test::Moose";
86583fa7	10	plan $@
2bf79155	11	? ( skip_all => 'needs Moose for testing' )
c4d3fae2	12	: ( tests => 57 );
26ab719a	13	}
	14
	15	use_ok 'DBIx::Class::Storage::DBI::Replicated::Pool';
	16	use_ok 'DBIx::Class::Storage::DBI::Replicated::Balancer';
	17	use_ok 'DBIx::Class::Storage::DBI::Replicated::Replicant';
	18	use_ok 'DBIx::Class::Storage::DBI::Replicated';
0f83441a	19
89cf6a70	20	=head1 HOW TO USE
	21
	22	This is a test of the replicated storage system. This will work in one of
	23	two ways, either it was try to fake replication with a couple of SQLite DBs
	24	and creative use of copy, or if you define a couple of %ENV vars correctly
	25	will try to test those. If you do that, it will assume the setup is properly
	26	replicating. Your results may vary, but I have demonstrated this to work with
	27	mysql native replication.
	28
	29	=cut
	30
	31
0f83441a	32	## ----------------------------------------------------------------------------
	33	## Build a class to hold all our required testing data and methods.
	34	## ----------------------------------------------------------------------------
	35
857d66ca	36	TESTSCHEMACLASSES: {
2bf79155	37
857d66ca	38	## --------------------------------------------------------------------- ##
	39	## Create an object to contain your replicated stuff.
	40	## --------------------------------------------------------------------- ##
	41
2bf79155	42	package DBIx::Class::DBI::Replicated::TestReplication;
	43
	44	use DBICTest;
	45	use base qw/Class::Accessor::Fast/;
	46
857d66ca	47	__PACKAGE__->mk_accessors( qw/schema/ );
2bf79155	48
	49	## Initialize the object
	50
	51	sub new {
26ab719a	52	my $class = shift @_;
26ab719a	53	my $self = $class->SUPER::new(@_);
2bf79155	54
2bf79155	55	$self->schema( $self->init_schema );
2bf79155	56	return $self;
	57	}
	58
26ab719a	59	## Get the Schema and set the replication storage type
2bf79155	60
	61	sub init_schema {
	62	my $class = shift @_;
89cf6a70	63
cb6ec758	64	my $schema = DBICTest->init_schema(
161fb223	65	storage_type=>{
106d5f3b	66	'::DBI::Replicated' => {
106d5f3b	67	balancer_type=>'::Random',
17b05c13	68	balancer_args=>{
	69	auto_validate_every=>100,
	70	},
89cf6a70	71	}
161fb223	72	},
89cf6a70	73	deploy_args=>{
	74	add_drop_table => 1,
	75	},
	76	);
cb6ec758	77
2bf79155	78	return $schema;
2bf79155	79	}
26ab719a	80
857d66ca	81	sub generate_replicant_connect_info {}
	82	sub replicate {}
	83	sub cleanup {}
	84
	85
	86	## --------------------------------------------------------------------- ##
	87	## Subclass for when you are using SQLite for testing, this provides a fake
	88	## replication support.
	89	## --------------------------------------------------------------------- ##
	90
	91	package DBIx::Class::DBI::Replicated::TestReplication::SQLite;
	92
	93	use DBICTest;
	94	use File::Copy;
	95	use base 'DBIx::Class::DBI::Replicated::TestReplication';
	96
	97	__PACKAGE__->mk_accessors( qw/master_path slave_paths/ );
	98
	99	## Set the mastep path from DBICTest
	100
	101	sub new {
	102	my $class = shift @_;
	103	my $self = $class->SUPER::new(@_);
	104
	105	$self->master_path( DBICTest->_sqlite_dbfilename );
	106	$self->slave_paths([
	107	"t/var/DBIxClass_slave1.db",
	108	"t/var/DBIxClass_slave2.db",
	109	]);
	110
	111	return $self;
	112	}
	113
26ab719a	114	## Return an Array of ArrayRefs where each ArrayRef is suitable to use for
	115	## $storage->connect_info to be used for connecting replicants.
	116
	117	sub generate_replicant_connect_info {
857d66ca	118	my $self = shift @_;
26ab719a	119	my @dsn = map {
	120	"dbi:SQLite:${_}";
	121	} @{$self->slave_paths};
	122
857d66ca	123	return map { [$_,'','',{AutoCommit=>1}] } @dsn;
26ab719a	124	}
	125
	126	## Do a 'good enough' replication by copying the master dbfile over each of
50336325	127	## the slave dbfiles. If the master is SQLite we do this, otherwise we
50336325	128	## just do a one second pause to let the slaves catch up.
26ab719a	129
	130	sub replicate {
	131	my $self = shift @_;
	132	foreach my $slave (@{$self->slave_paths}) {
	133	copy($self->master_path, $slave);
	134	}
	135	}
	136
	137	## Cleanup after ourselves. Unlink all gthe slave paths.
	138
	139	sub cleanup {
	140	my $self = shift @_;
	141	foreach my $slave (@{$self->slave_paths}) {
	142	unlink $slave;
	143	}
	144	}
857d66ca	145
	146	## --------------------------------------------------------------------- ##
	147	## Subclass for when you are setting the databases via custom export vars
	148	## This is for when you have a replicating database setup that you are
	149	## going to test against. You'll need to define the correct $ENV and have
	150	## two slave databases to test against, as well as a replication system
	151	## that will replicate in less than 1 second.
	152	## --------------------------------------------------------------------- ##
	153
	154	package DBIx::Class::DBI::Replicated::TestReplication::Custom;
	155	use base 'DBIx::Class::DBI::Replicated::TestReplication';
	156
	157	## Return an Array of ArrayRefs where each ArrayRef is suitable to use for
	158	## $storage->connect_info to be used for connecting replicants.
	159
	160	sub generate_replicant_connect_info {
	161	return (
	162	[$ENV{"DBICTEST_SLAVE0_DSN"}, $ENV{"DBICTEST_SLAVE0_DBUSER"}, $ENV{"DBICTEST_SLAVE0_DBPASS"}, {AutoCommit => 1}],
	163	[$ENV{"DBICTEST_SLAVE1_DSN"}, $ENV{"DBICTEST_SLAVE1_DBUSER"}, $ENV{"DBICTEST_SLAVE1_DBPASS"}, {AutoCommit => 1}],
	164	);
	165	}
	166
	167	## pause a bit to let the replication catch up
	168
	169	sub replicate {
	170	sleep 1;
	171	}
2bf79155	172	}
	173
	174	## ----------------------------------------------------------------------------
	175	## Create an object and run some tests
	176	## ----------------------------------------------------------------------------
	177
26ab719a	178	## Thi first bunch of tests are basic, just make sure all the bits are behaving
2bf79155	179
857d66ca	180	my $replicated_class = DBICTest->has_custom_dsn ?
	181	'DBIx::Class::DBI::Replicated::TestReplication::Custom' :
	182	'DBIx::Class::DBI::Replicated::TestReplication::SQLite';
	183
	184	ok my $replicated = $replicated_class->new
	185	=> 'Created a replication object';
2bf79155	186
26ab719a	187	isa_ok $replicated->schema
2bf79155	188	=> 'DBIx::Class::Schema';
2bf79155	189
26ab719a	190	isa_ok $replicated->schema->storage
	191	=> 'DBIx::Class::Storage::DBI::Replicated';
	192
	193	ok $replicated->schema->storage->meta
	194	=> 'has a meta object';
	195
	196	isa_ok $replicated->schema->storage->master
	197	=> 'DBIx::Class::Storage::DBI';
	198
	199	isa_ok $replicated->schema->storage->pool
	200	=> 'DBIx::Class::Storage::DBI::Replicated::Pool';
	201
17b05c13	202	does_ok $replicated->schema->storage->balancer
26ab719a	203	=> 'DBIx::Class::Storage::DBI::Replicated::Balancer';
	204
	205	ok my @replicant_connects = $replicated->generate_replicant_connect_info
	206	=> 'got replication connect information';
	207
955a6df6	208	ok my @replicated_storages = $replicated->schema->storage->connect_replicants(@replicant_connects)
26ab719a	209	=> 'Created some storages suitable for replicants';
26ab719a	210
cb6ec758	211	isa_ok $replicated->schema->storage->balancer->current_replicant
26ab719a	212	=> 'DBIx::Class::Storage::DBI';
	213
	214	ok $replicated->schema->storage->pool->has_replicants
	215	=> 'does have replicants';
	216
17b05c13	217	is $replicated->schema->storage->pool->num_replicants => 2
26ab719a	218	=> 'has two replicants';
26ab719a	219
de5dc9ef	220	does_ok $replicated_storages[0]
26ab719a	221	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
26ab719a	222
de5dc9ef	223	does_ok $replicated_storages[1]
26ab719a	224	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
26ab719a	225
89cf6a70	226	my @replicant_names = keys %{$replicated->schema->storage->replicants};
de5dc9ef	227
de5dc9ef	228	does_ok $replicated->schema->storage->replicants->{$replicant_names[0]}
26ab719a	229	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
26ab719a	230
de5dc9ef	231	does_ok $replicated->schema->storage->replicants->{$replicant_names[1]}
26ab719a	232	=> 'DBIx::Class::Storage::DBI::Replicated::Replicant';
	233
	234	## Add some info to the database
	235
	236	$replicated
	237	->schema
	238	->populate('Artist', [
	239	[ qw/artistid name/ ],
	240	[ 4, "Ozric Tentacles"],
	241	]);
	242
	243	## Make sure all the slaves have the table definitions
	244
	245	$replicated->replicate;
	246
	247	## Make sure we can read the data.
	248
	249	ok my $artist1 = $replicated->schema->resultset('Artist')->find(4)
	250	=> 'Created Result';
	251
	252	isa_ok $artist1
	253	=> 'DBICTest::Artist';
	254
	255	is $artist1->name, 'Ozric Tentacles'
	256	=> 'Found expected name for first result';
	257
	258	## Add some new rows that only the master will have This is because
	259	## we overload any type of write operation so that is must hit the master
	260	## database.
	261
	262	$replicated
	263	->schema
	264	->populate('Artist', [
	265	[ qw/artistid name/ ],
	266	[ 5, "Doom's Children"],
	267	[ 6, "Dead On Arrival"],
	268	[ 7, "Watergate"],
	269	]);
	270
89cf6a70	271	SKIP: {
	272	## We can't do this test if we have a custom replicants, since we assume
	273	## if there are custom one that you are trying to test a real replicating
	274	## system. See docs above for more.
	275
	276	skip 'Cannot test inconsistent replication since you have a real replication system', 1
	277	if DBICTest->has_custom_dsn && $ENV{"DBICTEST_SLAVE0_DSN"};
	278
	279	## Alright, the database 'cluster' is not in a consistent state. When we do
	280	## a read now we expect bad news
	281	is $replicated->schema->resultset('Artist')->find(5), undef
	282	=> 'read after disconnect fails because it uses a replicant which we have neglected to "replicate" yet';
	283	}
26ab719a	284
	285	## Make sure all the slaves have the table definitions
	286	$replicated->replicate;
	287
	288	## Should find some data now
	289
	290	ok my $artist2 = $replicated->schema->resultset('Artist')->find(5)
	291	=> 'Sync succeed';
	292
	293	isa_ok $artist2
	294	=> 'DBICTest::Artist';
	295
	296	is $artist2->name, "Doom's Children"
	297	=> 'Found expected name for first result';
	298
	299	## What happens when we disconnect all the replicants?
	300
50336325	301	is $replicated->schema->storage->pool->connected_replicants => 2
	302	=> "both replicants are connected";
	303
89cf6a70	304	$replicated->schema->storage->replicants->{$replicant_names[0]}->disconnect;
89cf6a70	305	$replicated->schema->storage->replicants->{$replicant_names[1]}->disconnect;
26ab719a	306
50336325	307	is $replicated->schema->storage->pool->connected_replicants => 0
	308	=> "both replicants are now disconnected";
	309
	310	## All these should pass, since the database should automatically reconnect
	311
26ab719a	312	ok my $artist3 = $replicated->schema->resultset('Artist')->find(6)
26ab719a	313	=> 'Still finding stuff.';
2bf79155	314
26ab719a	315	isa_ok $artist3
26ab719a	316	=> 'DBICTest::Artist';
2bf79155	317
26ab719a	318	is $artist3->name, "Dead On Arrival"
26ab719a	319	=> 'Found expected name for first result';
2bf79155	320
50336325	321	is $replicated->schema->storage->pool->connected_replicants => 1
50336325	322	=> "One replicant reconnected to handle the job";
6f6fb437	323
	324	## What happens when we try to select something that doesn't exist?
	325
	326	ok ! $replicated->schema->resultset('Artist')->find(666)
	327	=> 'Correctly failed to find something.';
cb6ec758	328
	329	## test the reliable option
	330
	331	TESTRELIABLE: {
	332
	333	$replicated->schema->storage->set_reliable_storage;
	334
	335	ok $replicated->schema->resultset('Artist')->find(2)
	336	=> 'Read from master 1';
	337
	338	ok $replicated->schema->resultset('Artist')->find(5)
	339	=> 'Read from master 2';
	340
	341	$replicated->schema->storage->set_balanced_storage;
	342
	343	ok $replicated->schema->resultset('Artist')->find(3)
9c748388	344	=> 'Read from replicant';
cb6ec758	345	}
cb6ec758	346
9c748388	347	## Make sure when reliable goes out of scope, we are using replicants again
cb6ec758	348
	349	ok $replicated->schema->resultset('Artist')->find(1)
	350	=> 'back to replicant 1.';
	351
	352	ok $replicated->schema->resultset('Artist')->find(2)
	353	=> 'back to replicant 2.';
2156bbdd	354
106d5f3b	355	## set all the replicants to inactive, and make sure the balancer falls back to
	356	## the master.
	357
89cf6a70	358	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
89cf6a70	359	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
106d5f3b	360
106d5f3b	361	ok $replicated->schema->resultset('Artist')->find(2)
de5dc9ef	362	=> 'Fallback to master';
	363
	364	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(1);
	365	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(1);
	366
	367	ok $replicated->schema->resultset('Artist')->find(2)
	368	=> 'Returned to replicates';
	369
	370	## Getting slave status tests
	371
f797e89e	372	SKIP: {
	373	## We skip this tests unless you have a custom replicants, since the default
	374	## sqlite based replication tests don't support these functions.
	375
17b05c13	376	skip 'Cannot Test Replicant Status on Non Replicating Database', 9
f797e89e	377	unless DBICTest->has_custom_dsn && $ENV{"DBICTEST_SLAVE0_DSN"};
	378
	379	$replicated->replicate; ## Give the slaves a chance to catchup.
	380
	381	ok $replicated->schema->storage->replicants->{$replicant_names[0]}->is_replicating
	382	=> 'Replicants are replicating';
	383
	384	is $replicated->schema->storage->replicants->{$replicant_names[0]}->lag_behind_master, 0
	385	=> 'Replicant is zero seconds behind master';
7edf5f1c	386
	387	## Test the validate replicants
	388
	389	$replicated->schema->storage->pool->validate_replicants;
	390
	391	is $replicated->schema->storage->pool->active_replicants, 2
	392	=> 'Still have 2 replicants after validation';
	393
	394	## Force the replicants to fail the validate test by required their lag to
	395	## be negative (ie ahead of the master!)
	396
	397	$replicated->schema->storage->pool->maximum_lag(-10);
	398	$replicated->schema->storage->pool->validate_replicants;
	399
	400	is $replicated->schema->storage->pool->active_replicants, 0
	401	=> 'No way a replicant be be ahead of the master';
	402
	403	## Let's be fair to the replicants again. Let them lag up to 5
	404
	405	$replicated->schema->storage->pool->maximum_lag(5);
	406	$replicated->schema->storage->pool->validate_replicants;
	407
	408	is $replicated->schema->storage->pool->active_replicants, 2
	409	=> 'Both replicants in good standing again';
17b05c13	410
	411	## Check auto validate
	412
	413	is $replicated->schema->storage->balancer->auto_validate_every, 100
	414	=> "Got the expected value for auto validate";
	415
	416	## This will make sure we auto validatge everytime
	417	$replicated->schema->storage->balancer->auto_validate_every(0);
	418
	419	## set all the replicants to inactive, and make sure the balancer falls back to
	420	## the master.
	421
	422	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
	423	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
	424
	425	## Ok, now when we go to run a query, autovalidate SHOULD reconnect
	426
	427	is $replicated->schema->storage->pool->active_replicants => 0
	428	=> "both replicants turned off";
	429
	430	ok $replicated->schema->resultset('Artist')->find(5)
	431	=> 'replicant reactivated';
	432
	433	is $replicated->schema->storage->pool->active_replicants => 2
	434	=> "both replicants reactivated";
f797e89e	435	}
f797e89e	436
c4d3fae2	437	## Test the reliably callback
	438
	439	ok my $reliably = sub {
	440
	441	ok $replicated->schema->resultset('Artist')->find(5)
	442	=> 'replicant reactivated';
	443
	444	} => 'created coderef properly';
	445
	446	$replicated->schema->storage->execute_reliably($reliably);
	447
	448	## Try something with an error
	449
	450	ok my $unreliably = sub {
	451
	452	ok $replicated->schema->resultset('ArtistXX')->find(5)
	453	=> 'replicant reactivated';
	454
	455	} => 'created coderef properly';
	456
	457	throws_ok {$replicated->schema->storage->execute_reliably($unreliably)}
	458	qr/coderef returned an error: Can't find source for ArtistXX/
	459	=> 'Bad coderef throws proper error';
	460
	461	## make sure transactions are set to execute_reliably
	462
	463	ok my $transaction = sub {
	464
	465	$replicated
	466	->schema
	467	->populate('Artist', [
	468	[ qw/artistid name/ ],
	469	[ 666, "Children of the Grave"],
	470	]);
	471
	472	ok my $result = $replicated->schema->resultset('Artist')->find(666);
	473
	474	};
	475
	476	$replicated->schema->txn_do($transaction);
	477
	478	## Make sure replication came back
	479
	480	ok $replicated->schema->resultset('Artist')->find(5)
	481	=> 'replicant reactivated';
	482
0f83441a	483	## Delete the old database files
50336325	484	$replicated->cleanup;
0f83441a	485
	486
	487
	488
	489
	490