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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::_ServerSession;
# MongoDB Server Session object
use version;
our $VERSION = 'v2.0.2';
use MongoDB::Error;
use Moo;
use UUID::URandom;
use Math::BigInt;
use MongoDB::_Types qw(
Document
);
use Types::Standard qw(
Maybe
InstanceOf
Int
);
use constant UUID_TYPE => 4;
use namespace::clean -except => 'meta';
# session_id
#
# $server_session->session_id;
#
# Returns the session id for this server session as a L<BSON::Bytes> object
# containing a binary UUID V4. For lower network usage, if not provided on
# initialisation this class will generate a new UUID instead of consulting the
# server for a new session id.
has session_id => (
is => 'lazy',
isa => Document,
builder => '_build_session_id',
);
sub _build_session_id {
my ( $self ) = @_;
my $uuid = BSON::Bytes->new(
data => UUID::URandom::create_uuid(),
subtype => UUID_TYPE,
);
return { id => $uuid };
}
# last_use
#
# $server_session->last_use;
#
# Returns the unix time that this server session was last used. Used for checking
# expiry of a server session. If undefined, then the session has (probably) not
# been used on the server.
has last_use => (
is => 'rwp',
init_arg => undef,
isa => Maybe[Int],
);
# transaction_id
#
# $server_session->transaction_id
#
# Returns the current transaction id for this server session. This is a ratcheted
# incrementing ID number, which when combined with the session id allows for
# retrying transactions in the correct order.
has transaction_id => (
is => 'rwp',
init_arg => undef,
default => sub { Math::BigInt->new('0') },
);
# pool_epoch
#
# tracks which pool the session came from; sessions won't be checked into
# a newer pool
has pool_epoch => (
is => 'ro',
default => -1,
);
# update_last_use
#
# $server_session->update_last_use;
#
# Updates the value of L</last_use> to the current unix time.
sub update_last_use {
my ( $self ) = @_;
$self->_set_last_use( time() );
}
sub _is_expiring {
my ( $self, $session_timeout ) = @_;
# if session_timeout is undef, then sessions arent actually supported (this
# value should be from logical_session_timeout_minutes).
return 1 unless defined $session_timeout;
my $timeout = time() - ( ( $session_timeout - 1 ) * 60 );
# Undefined last_use means its never actually been used on the server
return 1 if defined $self->last_use && $self->last_use < $timeout;
return;
}
1;
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