1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
#
# Copyright 2014 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.
#
package MongoDB::Op::_ListCollections;
# Encapsulate collection list operations; returns arrayref of collection
# names
use version;
our $VERSION = 'v1.4.5';
use Moo;
use MongoDB::Op::_Command;
use MongoDB::Op::_Query;
use MongoDB::QueryResult::Filtered;
use MongoDB::_Constants;
use MongoDB::_Types qw(
Document
);
use Types::Standard qw(
HashRef
InstanceOf
Str
);
use Tie::IxHash;
use namespace::clean;
has db_name => (
is => 'ro',
required => 1,
isa => Str,
);
has client => (
is => 'ro',
required => 1,
isa => InstanceOf['MongoDB::MongoClient'],
);
has filter => (
is => 'ro',
required => 1,
isa => Document,
);
has options => (
is => 'ro',
required => 1,
isa => HashRef,
);
with $_ for qw(
MongoDB::Role::_PrivateConstructor
MongoDB::Role::_ReadOp
MongoDB::Role::_CommandCursorOp
);
sub execute {
my ( $self, $link, $topology ) = @_;
my $res =
$link->accepts_wire_version(3)
? $self->_command_list_colls( $link, $topology )
: $self->_legacy_list_colls( $link, $topology );
return $res;
}
sub _command_list_colls {
my ( $self, $link, $topology ) = @_;
my $options = $self->options;
# batchSize is not a command parameter itself like other options
my $batchSize = delete $options->{batchSize};
if ( defined $batchSize ) {
$options->{cursor} = { batchSize => $batchSize };
}
else {
$options->{cursor} = {};
}
my $filter =
ref( $self->filter ) eq 'ARRAY'
? { @{ $self->filter } }
: $self->filter;
my $cmd = Tie::IxHash->new(
listCollections => 1,
filter => $filter,
%{$self->options},
);
my $op = MongoDB::Op::_Command->_new(
db_name => $self->db_name,
query => $cmd,
query_flags => {},
read_preference => $self->read_preference,
bson_codec => $self->bson_codec,
);
my $res = $op->execute( $link, $topology );
return $self->_build_result_from_cursor( $res );
}
sub _legacy_list_colls {
my ( $self, $link, $topology ) = @_;
my $query = MongoDB::_Query->_new(
modifiers => {},
allowPartialResults => 0,
batchSize => 0,
comment => '',
cursorType => 'non_tailable',
limit => 0,
maxAwaitTimeMS => 0,
maxTimeMS => 0,
noCursorTimeout => 0,
oplogReplay => 0,
projection => undef,
skip => 0,
sort => undef,
%{$self->options},
db_name => $self->db_name,
coll_name => 'system.namespaces',
bson_codec => $self->bson_codec,
client => $self->client,
read_preference => $self->read_preference,
filter => $self->filter,
);
my $op = $query->as_query_op( { post_filter => \&__filter_legacy_names } );
return $op->execute( $link, $topology );
}
# exclude names with '$' except oplog.$
# XXX why do we include oplog.$?
sub __filter_legacy_names {
my $doc = shift;
# remove leading database name for compatibility with listCollections
$doc->{name} =~ s/^[^.]+\.//;
my $name = $doc->{name};
return !( index( $name, '$' ) >= 0 && index( $name, '.oplog.$' ) < 0 );
}
1;
|
