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# Copyright 2009 - present MongoDB, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
use strict;
use warnings;
use Test::More;
use Test::Fatal;
use Storable qw( dclone );
use Safe::Isa;
use MongoDB;
use lib "t/lib";
use MongoDBTest qw/
skip_unless_mongod
build_client
get_test_db
server_version
server_type
skip_unless_failpoints_available
set_failpoint
clear_failpoint
/;
skip_unless_mongod();
skip_unless_failpoints_available();
my $main_conn = build_client();
my $server_version = server_version($main_conn);
my $server_type = server_type($main_conn);
plan skip_all => 'MongoDB version 4.0 or higher required'
unless $server_version >= version->parse('v4.0.0');
plan skip_all => 'Require replica set'
unless $server_type eq 'RSPrimary';
ok( $main_conn->connected, "client is connected" );
isa_ok( $main_conn, 'MongoDB::MongoClient' );
my @events;
sub clear_events { @events = () }
sub event_cb { push @events, dclone $_[0] }
sub connections_created {
my $server_status = shift->send_admin_command([serverStatus => 1]);
return $server_status->{output}{connections}{totalCreated};
}
sub build_insert_failpoint {
my $err_code = shift;
return {
configureFailPoint => "failCommand",
mode => {
times => 1
},
data => {
failCommands => ["insert"],
errorCode => $err_code,
}
};
}
sub test_reset_conn_pool {
my ($conn, $coll, $err_code) = @_;
my $init_total_created = connections_created($conn);
my $failpoint = build_insert_failpoint($err_code);
set_failpoint($conn, $failpoint);
clear_events();
eval { $coll->insert_one({ test => 1}) };
ok(my $err = $@, 'got failCommand error');
ok($err->$_isa('MongoDB::DatabaseError'), 'failCommand err');
is($err->code, $err_code, 'check error code');
is(connections_created($conn), $init_total_created + 1,
'new connections in');
clear_failpoint($conn, $failpoint);
}
my $tests = {
'1-getMore Iteration' => sub {
my ($conn, $db, $coll) = @_;
plan skip_all => 'MongoDB version 4.2 or higher required'
unless $server_version >= version->parse('v4.2.0');
my $init_total_created = connections_created($conn);
$coll->insert_many([
{ x => 1 },
{ x => 2 },
{ x => 3 },
{ x => 4 },
{ x => 5 },
]);
ok(my $res = $coll->find( { x => { '$gt' => 3 } }, { batchSize => 2 } ),
'find');
ok($res->next, 'first batch retrieve');
my $repl = $conn->send_admin_command([ replSetStepDown => 5, force => 1 ]);
ok($repl->{output}{ok}, 'repl ok');
my @got_events = grep { $_->{commandName} eq 'replSetStepDown' } @events;
ok(@got_events == 2, 'repl command');
is($got_events[1]->{type}, 'command_succeeded', 'succeeded');
ok(my $doc = $res->next, 'next batch retrieve');
is(connections_created($conn), $init_total_created,
'no new connections');
},
'2-Not Master - Keep Connection Pool' => sub {
my ($conn, $db, $coll) = @_;
plan skip_all => 'MongoDB version 4.2 or higher required'
unless $server_version >= version->parse('v4.2.0');
my $init_total_created = connections_created($conn);
my $err_code = 10107;
my $failpoint = build_insert_failpoint($err_code);
set_failpoint($conn, $failpoint);
clear_events();
eval { $coll->insert_one({ test => 1}) };
ok(my $err = $@, 'got failCommand error');
ok($err->$_isa('MongoDB::DatabaseError'), 'failCommand err');
is($err->code, $err_code, 'check error code');
$coll->insert_one({ test => 1});
is($events[-1]->{type}, 'command_succeeded', 'insert succeeded');
is(connections_created($conn), $init_total_created,
'no new connections');
clear_failpoint($conn, $failpoint);
},
'3-Not Master - Reset Connection Pool' => sub {
my ($conn, $db, $coll) = @_;
plan skip_all => 'MongoDB version 4.0 maximum required'
unless $server_version < version->parse('v4.1.0');
my $err_code = 10107;
test_reset_conn_pool($conn, $coll, $err_code);
},
'4-Shutdown in progress - Reset Connection Pool' => sub {
my ($conn, $db, $coll) = @_;
my $err_code = 91;
test_reset_conn_pool($conn, $coll, $err_code);
},
'5-Interrupted at shutdown - Reset Connection Pool' => sub {
my ($conn, $db, $coll) = @_;
my $err_code = 11600;
test_reset_conn_pool($conn, $coll, $err_code);
},
};
foreach my $test_desc (sort keys %$tests) {
my $conn = build_client(
monitoring_callback => \&event_cb,
retry_writes => 0,
);
my ($db_name, $coll_name) = ('step-down', 'step-down');
my $db = $conn->get_database($db_name);
isa_ok( $db, 'MongoDB::Database', 'get_database' );
my $coll = $db->get_collection(
'step-down',
{ write_concern => { w => 'majority', wtimeout => 10000 } }
);
alarm 20;
CREATE_COLL : while (1) {
eval {
$coll->drop;
$db->run_command([ create => $coll_name ]);
};
my $err = $@;
last CREATE_COLL unless $err && $err->$_isa('MongoDB::SelectionError');
}
alarm 0;
my $test_sub = $tests->{$test_desc};
clear_events();
subtest $test_desc => sub {
$test_sub->($conn, $db, $coll);
};
}
done_testing;
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