use strict;
use warnings;
use lib qw(t/lib);
+use Test::More;
+use Test::Exception;
+use DBICTest;
-use File::Copy;
+BEGIN {
+ eval "use Moose; use Test::Moose";
+ plan $@
+ ? ( skip_all => 'needs Moose for testing' )
+ : ( tests => 71 );
+}
-use DBICTest;
+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';
-use Test::More;
-plan tests => 1;
+=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/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);
+ ok my $more = $replicated->schema->resultset('Artist')->find(1);
+
+ return ($result, $more);
+
+};
+
+## 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';
+}
-my $schema = DBICTest->init_schema();
+## Test transaction returning a single value
-$schema->storage_type( '::DBI::Replication' );
+{
+ ok my $result = $replicated->schema->txn_do(sub {
+ ok my $more = $replicated->schema->resultset('Artist')->find(1);
+ return $more;
+ }) => 'successfully processed transaction';
+
+ is $result->id, 1
+ => 'Got expected single result from transaction';
+}
+## Make sure replication came back
-my $db_file1 = "t/var/DBIxClass.db";
-my $db_file2 = "t/var/DBIxClass_slave1.db";
-my $db_file3 = "t/var/DBIxClass_slave2.db";
-my $dsn1 = $ENV{"DBICTEST_DSN"} || "dbi:SQLite:${db_file1}";
-my $dsn2 = $ENV{"DBICTEST_DSN2"} || "dbi:SQLite:${db_file2}";
-my $dsn3 = $ENV{"DBICTEST_DSN3"} || "dbi:SQLite:${db_file3}";
+ok $replicated->schema->resultset('Artist')->find(1)
+ => 'replicant reactivated';
+
+## Test Discard changes
-$schema->connect( [
- [ $dsn1, '', '', { AutoCommit => 1 } ],
- [ $dsn2, '', '', { priority => 10 } ],
- [ $dsn3, '', '', { priority => 10 } ]
- ]
- );
+{
+ ok my $artist = $replicated->schema->resultset('Artist')->find(2)
+ => 'got an artist to test discard changes';
+
+ ok $artist->discard_changes
+ => 'properly discard changes';
+}
+
+## Delete the old database files
+$replicated->cleanup;
-$schema->populate('Artist', [
- [ qw/artistid name/ ],
- [ 4, 'Ozric Tentacles']
- ]);
-# try and read (should fail)
-my $new_artist = $schema->resultset('Artist')->find(4);
-warn "artist : $new_artist\n";
-# try and read (should succede after faked synchronisation)
-copy($db_file1, $db_file2);
-unlink $db_file2;
-ok(1,"These aren't the tests you're looking for");
projects / dbsrgits/DBIx-Class.git / blobdiff