[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 DBIx::Class::Storage::DBI::Replicated";
    plan $@
        ? ( skip_all => "Deps not installed: $@" )
        : ( tests => 79 );
}

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

## 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"],
    ]);

## 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/Can't find source for ArtistXX/
    => 'Bad coderef throws proper error';
    
## Make sure replication came back

ok $replicated->schema->resultset('Artist')->find(3)
    => 'replicant reactivated';
    
## make sure transactions are set to execute_reliably

ok my $transaction = sub {
	
	my $id = shift @_;
	
	$replicated
	    ->schema
	    ->populate('Artist', [
	        [ qw/artistid name/ ],
	        [ $id, "Children of the Grave"],
	    ]);
	    
    ok my $result = $replicated->schema->resultset('Artist')->find($id)
        => 'Found expected artist';
        
    ok my $more = $replicated->schema->resultset('Artist')->find(1)
        => 'Found expected artist again';
        
   return ($result, $more);
   
} => 'Created a coderef properly';

## Test the transaction with multi return
{
	ok my @return = $replicated->schema->txn_do($transaction, 666)
	    => 'did transaction';
	    
	    is $return[0]->id, 666
	        => 'first returned value is correct';
	        
	    is $return[1]->id, 1
	        => 'second returned value is correct';
}

## Test that asking for single return works
{
	ok my $return = $replicated->schema->txn_do($transaction, 777)
	    => 'did transaction';
	    
	    is $return->id, 777
	        => 'first returned value is correct';
}

## Test transaction returning a single value

{
	ok my $result = $replicated->schema->txn_do(sub {
		ok my $more = $replicated->schema->resultset('Artist')->find(1)
		=> 'found inside a transaction';
		return $more;
	}) => 'successfully processed transaction';
	
	is $result->id, 1
	   => 'Got expected single result from transaction';
}

## Make sure replication came back

ok $replicated->schema->resultset('Artist')->find(1)
    => 'replicant reactivated';
    
## Test Discard changes

{
	ok my $artist = $replicated->schema->resultset('Artist')->find(2)
	    => 'got an artist to test discard changes';
	    
	ok $artist->discard_changes
	   => 'properly discard changes';
}

## Test some edge cases, like trying to do a transaction inside a transaction, etc

{
    ok my $result = $replicated->schema->txn_do(sub {
    	return $replicated->schema->txn_do(sub {
	        ok my $more = $replicated->schema->resultset('Artist')->find(1)
	        => 'found inside a transaction inside a transaction';
	        return $more;    		
    	});
    }) => 'successfully processed transaction';
    
    is $result->id, 1
       => 'Got expected single result from transaction';	  
}

{
    ok my $result = $replicated->schema->txn_do(sub {
    	return $replicated->schema->storage->execute_reliably(sub {
	    	return $replicated->schema->txn_do(sub {
	    		return $replicated->schema->storage->execute_reliably(sub {
			        ok my $more = $replicated->schema->resultset('Artist')->find(1)
			        => 'found inside crazy deep transactions and execute_reliably';
			        return $more; 	    			
	    		});
	    	});    	
    	});
    }) => 'successfully processed transaction';
    
    is $result->id, 1
       => 'Got expected single result from transaction';	  
}     

## Test the force_pool resultset attribute.

{
	ok my $artist_rs = $replicated->schema->resultset('Artist')
        => 'got artist resultset';
	   
	## Turn on Forced Pool Storage
	ok my $reliable_artist_rs = $artist_rs->search(undef, {force_pool=>'master'})
        => 'Created a resultset using force_pool storage';
	   
    ok my $artist = $reliable_artist_rs->find(2) 
        => 'got an artist result via force_pool storage';
}

## 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 {
467799e8	9	eval "use DBIx::Class::Storage::DBI::Replicated";
86583fa7	10	plan $@
467799e8	11	? ( skip_all => "Deps not installed: $@" )
c354902c	12	: ( tests => 79 );
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;
5c1d82d2	246	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(1);
5c1d82d2	247	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(1);
26ab719a	248
	249	## Make sure we can read the data.
	250
	251	ok my $artist1 = $replicated->schema->resultset('Artist')->find(4)
	252	=> 'Created Result';
	253
	254	isa_ok $artist1
	255	=> 'DBICTest::Artist';
	256
	257	is $artist1->name, 'Ozric Tentacles'
	258	=> 'Found expected name for first result';
	259
	260	## Add some new rows that only the master will have This is because
	261	## we overload any type of write operation so that is must hit the master
	262	## database.
	263
	264	$replicated
	265	->schema
	266	->populate('Artist', [
	267	[ qw/artistid name/ ],
	268	[ 5, "Doom's Children"],
	269	[ 6, "Dead On Arrival"],
	270	[ 7, "Watergate"],
	271	]);
	272
26ab719a	273	## Make sure all the slaves have the table definitions
	274	$replicated->replicate;
	275
	276	## Should find some data now
	277
	278	ok my $artist2 = $replicated->schema->resultset('Artist')->find(5)
	279	=> 'Sync succeed';
	280
	281	isa_ok $artist2
	282	=> 'DBICTest::Artist';
	283
	284	is $artist2->name, "Doom's Children"
	285	=> 'Found expected name for first result';
	286
	287	## What happens when we disconnect all the replicants?
	288
50336325	289	is $replicated->schema->storage->pool->connected_replicants => 2
	290	=> "both replicants are connected";
	291
89cf6a70	292	$replicated->schema->storage->replicants->{$replicant_names[0]}->disconnect;
89cf6a70	293	$replicated->schema->storage->replicants->{$replicant_names[1]}->disconnect;
26ab719a	294
50336325	295	is $replicated->schema->storage->pool->connected_replicants => 0
	296	=> "both replicants are now disconnected";
	297
	298	## All these should pass, since the database should automatically reconnect
	299
26ab719a	300	ok my $artist3 = $replicated->schema->resultset('Artist')->find(6)
26ab719a	301	=> 'Still finding stuff.';
2bf79155	302
26ab719a	303	isa_ok $artist3
26ab719a	304	=> 'DBICTest::Artist';
2bf79155	305
26ab719a	306	is $artist3->name, "Dead On Arrival"
26ab719a	307	=> 'Found expected name for first result';
2bf79155	308
50336325	309	is $replicated->schema->storage->pool->connected_replicants => 1
50336325	310	=> "One replicant reconnected to handle the job";
6f6fb437	311
	312	## What happens when we try to select something that doesn't exist?
	313
	314	ok ! $replicated->schema->resultset('Artist')->find(666)
	315	=> 'Correctly failed to find something.';
cb6ec758	316
	317	## test the reliable option
	318
	319	TESTRELIABLE: {
	320
	321	$replicated->schema->storage->set_reliable_storage;
	322
	323	ok $replicated->schema->resultset('Artist')->find(2)
	324	=> 'Read from master 1';
	325
	326	ok $replicated->schema->resultset('Artist')->find(5)
	327	=> 'Read from master 2';
	328
	329	$replicated->schema->storage->set_balanced_storage;
	330
	331	ok $replicated->schema->resultset('Artist')->find(3)
9c748388	332	=> 'Read from replicant';
cb6ec758	333	}
cb6ec758	334
9c748388	335	## Make sure when reliable goes out of scope, we are using replicants again
cb6ec758	336
	337	ok $replicated->schema->resultset('Artist')->find(1)
	338	=> 'back to replicant 1.';
	339
	340	ok $replicated->schema->resultset('Artist')->find(2)
	341	=> 'back to replicant 2.';
2156bbdd	342
106d5f3b	343	## set all the replicants to inactive, and make sure the balancer falls back to
	344	## the master.
	345
89cf6a70	346	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
89cf6a70	347	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
106d5f3b	348
106d5f3b	349	ok $replicated->schema->resultset('Artist')->find(2)
de5dc9ef	350	=> 'Fallback to master';
	351
	352	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(1);
	353	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(1);
	354
	355	ok $replicated->schema->resultset('Artist')->find(2)
	356	=> 'Returned to replicates';
	357
	358	## Getting slave status tests
	359
f797e89e	360	SKIP: {
	361	## We skip this tests unless you have a custom replicants, since the default
	362	## sqlite based replication tests don't support these functions.
	363
17b05c13	364	skip 'Cannot Test Replicant Status on Non Replicating Database', 9
f797e89e	365	unless DBICTest->has_custom_dsn && $ENV{"DBICTEST_SLAVE0_DSN"};
	366
	367	$replicated->replicate; ## Give the slaves a chance to catchup.
	368
	369	ok $replicated->schema->storage->replicants->{$replicant_names[0]}->is_replicating
	370	=> 'Replicants are replicating';
	371
	372	is $replicated->schema->storage->replicants->{$replicant_names[0]}->lag_behind_master, 0
	373	=> 'Replicant is zero seconds behind master';
7edf5f1c	374
	375	## Test the validate replicants
	376
	377	$replicated->schema->storage->pool->validate_replicants;
	378
	379	is $replicated->schema->storage->pool->active_replicants, 2
	380	=> 'Still have 2 replicants after validation';
	381
	382	## Force the replicants to fail the validate test by required their lag to
	383	## be negative (ie ahead of the master!)
	384
	385	$replicated->schema->storage->pool->maximum_lag(-10);
	386	$replicated->schema->storage->pool->validate_replicants;
	387
	388	is $replicated->schema->storage->pool->active_replicants, 0
	389	=> 'No way a replicant be be ahead of the master';
	390
	391	## Let's be fair to the replicants again. Let them lag up to 5
	392
	393	$replicated->schema->storage->pool->maximum_lag(5);
	394	$replicated->schema->storage->pool->validate_replicants;
	395
	396	is $replicated->schema->storage->pool->active_replicants, 2
	397	=> 'Both replicants in good standing again';
17b05c13	398
	399	## Check auto validate
	400
	401	is $replicated->schema->storage->balancer->auto_validate_every, 100
	402	=> "Got the expected value for auto validate";
	403
	404	## This will make sure we auto validatge everytime
	405	$replicated->schema->storage->balancer->auto_validate_every(0);
	406
	407	## set all the replicants to inactive, and make sure the balancer falls back to
	408	## the master.
	409
	410	$replicated->schema->storage->replicants->{$replicant_names[0]}->active(0);
	411	$replicated->schema->storage->replicants->{$replicant_names[1]}->active(0);
	412
	413	## Ok, now when we go to run a query, autovalidate SHOULD reconnect
	414
	415	is $replicated->schema->storage->pool->active_replicants => 0
	416	=> "both replicants turned off";
	417
	418	ok $replicated->schema->resultset('Artist')->find(5)
	419	=> 'replicant reactivated';
	420
	421	is $replicated->schema->storage->pool->active_replicants => 2
	422	=> "both replicants reactivated";
f797e89e	423	}
f797e89e	424
c4d3fae2	425	## Test the reliably callback
	426
	427	ok my $reliably = sub {
	428
	429	ok $replicated->schema->resultset('Artist')->find(5)
	430	=> 'replicant reactivated';
	431
	432	} => 'created coderef properly';
	433
	434	$replicated->schema->storage->execute_reliably($reliably);
	435
	436	## Try something with an error
	437
	438	ok my $unreliably = sub {
	439
	440	ok $replicated->schema->resultset('ArtistXX')->find(5)
	441	=> 'replicant reactivated';
	442
	443	} => 'created coderef properly';
	444
	445	throws_ok {$replicated->schema->storage->execute_reliably($unreliably)}
ed213e85	446	qr/Can't find source for ArtistXX/
c4d3fae2	447	=> 'Bad coderef throws proper error';
c4d3fae2	448
ed213e85	449	## Make sure replication came back
	450
	451	ok $replicated->schema->resultset('Artist')->find(3)
	452	=> 'replicant reactivated';
	453
c4d3fae2	454	## make sure transactions are set to execute_reliably
	455
	456	ok my $transaction = sub {
	457
ed213e85	458	my $id = shift @_;
ed213e85	459
c4d3fae2	460	$replicated
	461	->schema
	462	->populate('Artist', [
	463	[ qw/artistid name/ ],
ed213e85	464	[ $id, "Children of the Grave"],
c4d3fae2	465	]);
c4d3fae2	466
64cdad22	467	ok my $result = $replicated->schema->resultset('Artist')->find($id)
	468	=> 'Found expected artist';
	469
	470	ok my $more = $replicated->schema->resultset('Artist')->find(1)
	471	=> 'Found expected artist again';
	472
ed213e85	473	return ($result, $more);
c4d3fae2	474
64cdad22	475	} => 'Created a coderef properly';
c4d3fae2	476
ed213e85	477	## Test the transaction with multi return
	478	{
	479	ok my @return = $replicated->schema->txn_do($transaction, 666)
	480	=> 'did transaction';
	481
	482	is $return[0]->id, 666
	483	=> 'first returned value is correct';
	484
	485	is $return[1]->id, 1
	486	=> 'second returned value is correct';
	487	}
	488
	489	## Test that asking for single return works
	490	{
	491	ok my $return = $replicated->schema->txn_do($transaction, 777)
	492	=> 'did transaction';
	493
	494	is $return->id, 777
	495	=> 'first returned value is correct';
	496	}
	497
	498	## Test transaction returning a single value
	499
	500	{
	501	ok my $result = $replicated->schema->txn_do(sub {
64cdad22	502	ok my $more = $replicated->schema->resultset('Artist')->find(1)
64cdad22	503	=> 'found inside a transaction';
ed213e85	504	return $more;
	505	}) => 'successfully processed transaction';
	506
	507	is $result->id, 1
	508	=> 'Got expected single result from transaction';
	509	}
c4d3fae2	510
	511	## Make sure replication came back
	512
ed213e85	513	ok $replicated->schema->resultset('Artist')->find(1)
c4d3fae2	514	=> 'replicant reactivated';
ed213e85	515
	516	## Test Discard changes
	517
	518	{
	519	ok my $artist = $replicated->schema->resultset('Artist')->find(2)
	520	=> 'got an artist to test discard changes';
	521
	522	ok $artist->discard_changes
	523	=> 'properly discard changes';
	524	}
64cdad22	525
	526	## Test some edge cases, like trying to do a transaction inside a transaction, etc
	527
	528	{
	529	ok my $result = $replicated->schema->txn_do(sub {
	530	return $replicated->schema->txn_do(sub {
	531	ok my $more = $replicated->schema->resultset('Artist')->find(1)
	532	=> 'found inside a transaction inside a transaction';
	533	return $more;
	534	});
	535	}) => 'successfully processed transaction';
	536
	537	is $result->id, 1
	538	=> 'Got expected single result from transaction';
	539	}
	540
	541	{
	542	ok my $result = $replicated->schema->txn_do(sub {
	543	return $replicated->schema->storage->execute_reliably(sub {
	544	return $replicated->schema->txn_do(sub {
	545	return $replicated->schema->storage->execute_reliably(sub {
	546	ok my $more = $replicated->schema->resultset('Artist')->find(1)
	547	=> 'found inside crazy deep transactions and execute_reliably';
	548	return $more;
	549	});
	550	});
	551	});
	552	}) => 'successfully processed transaction';
	553
	554	is $result->id, 1
	555	=> 'Got expected single result from transaction';
	556	}
2ce6e9a6	557
7e38d850	558	## Test the force_pool resultset attribute.
bbafcf26	559
	560	{
	561	ok my $artist_rs = $replicated->schema->resultset('Artist')
	562	=> 'got artist resultset';
	563
7e38d850	564	## Turn on Forced Pool Storage
	565	ok my $reliable_artist_rs = $artist_rs->search(undef, {force_pool=>'master'})
	566	=> 'Created a resultset using force_pool storage';
bbafcf26	567
bbafcf26	568	ok my $artist = $reliable_artist_rs->find(2)
7e38d850	569	=> 'got an artist result via force_pool storage';
bbafcf26	570	}
bbafcf26	571
0f83441a	572	## Delete the old database files
50336325	573	$replicated->cleanup;
0f83441a	574
	575
	576
	577
	578
	579