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# Copyright 2018 - 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;
package MongoDB::_TransactionOptions;
# MongoDB options for transactions
use version;
our $VERSION = 'v2.2.2';
use MongoDB::Error;
use Moo;
use MongoDB::ReadConcern;
use MongoDB::WriteConcern;
use MongoDB::ReadPreference;
use MongoDB::_Types qw(
MongoDBClient
WriteConcern
ReadConcern
ReadPreference
);
use Types::Standard qw(
HashRef
Any
Maybe
Int
);
use namespace::clean -except => 'meta';
# Options provided during start transaction
has options => (
is => 'ro',
required => 1,
isa => HashRef,
);
# Options provided during start session
has default_options => (
is => 'ro',
required => 1,
isa => HashRef,
);
# needed for defaults
has client => (
is => 'ro',
required => 1,
isa => MongoDBClient,
);
has write_concern => (
# must error on start_transaction, so is built immediately
is => 'ro',
isa => WriteConcern,
init_arg => undef,
builder => '_build_write_concern',
);
sub _build_write_concern {
my $self = shift;
my $options = $self->options->{writeConcern};
$options ||= $self->default_options->{writeConcern};
$options ||= {};
# Merge in client default to pass through forced undef wtimeout etc.
$options = {
$self->client->_write_concern_options,
%$options,
};
my $write_concern = MongoDB::WriteConcern->new( $options );
unless ( $write_concern->is_acknowledged ) {
MongoDB::ConfigurationError->throw(
'transactions do not support unacknowledged write concerns' );
}
return $write_concern;
}
has read_concern => (
is => 'lazy',
isa => ReadConcern,
init_arg => undef,
builder => '_build_read_concern',
);
# Read concern errors are returned by the database, so no need to check for
# errors
sub _build_read_concern {
my $self = shift;
my $options = $self->options->{readConcern};
$options ||= $self->default_options->{readConcern};
return MongoDB::ReadConcern->new( $options ) if defined $options;
return $self->client->read_concern;
}
has read_preference => (
is => 'lazy',
isa => ReadPreference,
init_arg => undef,
builder => '_build_read_preference',
);
# Read preferences must be primary at present, so check after building it
sub _build_read_preference {
my $self = shift;
my $options = $self->options->{readPreference};
$options ||= $self->default_options->{readPreference};
my $read_pref;
$read_pref = MongoDB::ReadPreference->new( $options ) if defined $options;
$read_pref ||= $self->client->read_preference;
if ( $read_pref->mode ne 'primary' ) {
MongoDB::ConfigurationError->throw(
"read preference in a transaction must be primary" );
}
return $read_pref;
}
has max_commit_time_ms => (
is => 'lazy',
isa => Maybe[Int],
init_arg => undef,
builder => '_build_max_commit_time_ms',
);
sub _build_max_commit_time_ms {
my $self = shift;
my ( $opts, $default_opts ) = ( $self->options, $self->default_options );
my $max_time_ms = $opts->{'maxCommitTimeMS'};
$max_time_ms ||= $default_opts->{'maxCommitTimeMS'};
return $max_time_ms;
}
1;
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