# Net::ZooKeeper - Perl extension for Apache ZooKeeper
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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 File::Spec;
use Test::More tests => 35;
BEGIN { use_ok('Net::ZooKeeper', qw(:all)) };
my $test_dir;
(undef, $test_dir, undef) = File::Spec->splitpath($0);
require File::Spec->catfile($test_dir, 'util.pl');
my($hosts, $root_path, $node_path) = zk_test_setup(0);
my $zkh = Net::ZooKeeper->new($hosts);
my $path;
SKIP: {
my $ret = $zkh->exists($root_path) if (defined($zkh));
skip 'no connection to ZooKeeper', 1 unless
(defined($ret) and $ret);
$path = $zkh->create($node_path, 'foo', 'acl' => ZOO_OPEN_ACL_UNSAFE);
is($path, $node_path,
'create(): created node');
}
SKIP: {
skip 'no connection to ZooKeeper', 21 unless
(defined($path) and $path eq $node_path);
## exists()
my $ret = $zkh->exists($node_path);
ok($ret,
'exists(): checked node existence');
$ret = $zkh->exists($node_path . '/NONE');
ok((!$ret and $zkh->get_error() == ZNONODE and $! eq ''),
'exists(): checked node non-existence');
my $stat = $zkh->stat();
$ret = $zkh->exists($node_path, 'stat' => $stat);
ok(($ret and $stat->{'data_len'} == 3),
'exists(): checked node existence with stat handle');
## get()
my $node = $zkh->get($node_path);
is($node, 'foo',
'get(): retrieved node value');
$node = $zkh->get($node_path . '/NONE');
ok((!defined($node) and $zkh->get_error() == ZNONODE and $! eq ''),
'get(): undef returned for non-extant node');
$node = $zkh->get($node_path, 'data_read_len', 2);
is($node, 'fo',
'get(): retrieved truncated node value');
$node = $zkh->get($node_path, 'data_read_len' => 0);
is($node, '',
'get(): retrieved zero-length node value');
$node = $zkh->get($node_path, 'stat' => $stat);
ok(($node eq 'foo' and $stat->{'data_len'} == 3),
'get(): retrieved node value with stat handle');
## set()
$ret = $zkh->set($node_path, 'foo');
ok($ret,
'set(): set node value');
SKIP: {
my $ret = $zkh->exists($node_path, 'stat' => $stat);
skip 'invalid node data', 2 unless
($ret and $stat->{'version'} == 1);
$ret = $zkh->set($node_path, 'foo', 'version' => $stat->{'version'});
ok($ret,
'set(): set node value with matching version');
$ret = $zkh->set($node_path, 'foo', 'version' => $stat->{'version'});
ok((!$ret and $zkh->get_error() == ZBADVERSION and $! eq ''),
'set(): node value unchanged if non-matching version');
}
$ret = $zkh->set($node_path, 'foobaz', 'stat' => $stat);
ok(($ret and $stat->{'data_len'} == 6),
'set(): retrieved node value with stat handle');
## create(), delete()
$path = $zkh->create($node_path, 'foo', 'acl' => ZOO_OPEN_ACL_UNSAFE);
ok((!defined($path) and $zkh->get_error() == ZNODEEXISTS and $! eq ''),
'create(): undef when attempting to create extant node');
$ret = $zkh->delete($node_path . '/NONE');
ok((!$ret and $zkh->get_error() == ZNONODE and $! eq ''),
'delete(): no deletion of non-extant node');
$ret = $zkh->delete($node_path);
ok($ret,
'delete(): deleted node');
my $path_read_len = length($node_path) - 2;
$path = $zkh->create($node_path, 'foo',
'path_read_len' => $path_read_len,
'acl' => ZOO_OPEN_ACL_UNSAFE);
is($path, substr($node_path, 0, -2),
'create(): created node with small return path buffer');
$path = $zkh->create("$node_path/s", 'foo',
'flags' => ZOO_SEQUENCE,
'acl' => ZOO_OPEN_ACL_UNSAFE);
like($path, qr/^$node_path\/s[0-9]+$/,
'create(): created sequential node');
SKIP: {
my $ret = $zkh->exists($path, 'stat' => $stat);
unless ($ret and $stat->{'version'} == 0) {
my $ret = $zkh->delete($path);
diag(sprintf('unable to delete node %s: %d, %s',
$path, $zkh->get_error(), $!)) unless ($ret);
skip 'invalid node data', 2;
}
$ret = $zkh->delete($path, 'version' => ($stat->{'version'} + 1));
ok((!$ret and $zkh->get_error() == ZBADVERSION and $! eq ''),
'delete(): node not deleted if non-matching version');
$ret = $zkh->delete($path, 'version' => $stat->{'version'});
ok($ret,
'delete(): deleted sequential node with matching version');
}
$path = $zkh->create("$node_path/e", 'foo',
'flags' => ZOO_EPHEMERAL,
'acl' => ZOO_OPEN_ACL_UNSAFE);
is($path, "$node_path/e",
'create(): created ephemeral node');
$path = $zkh->create("$node_path/es", 'foo',
'flags' => (ZOO_SEQUENCE | ZOO_EPHEMERAL),
'acl' => ZOO_OPEN_ACL_UNSAFE);
like($path, qr/^$node_path\/es[0-9]+$/,
'create(): created ephemeral sequential node');
undef $zkh;
}
$zkh = Net::ZooKeeper->new($hosts);
SKIP: {
my $ret = $zkh->exists($node_path) if (defined($zkh));
skip 'no connection to ZooKeeper', 12 unless
(defined($ret) and $ret);
$ret = $zkh->exists("$node_path/e");
ok((!$ret and $zkh->get_error() == ZNONODE and $! eq ''),
'exists(): checked ephemeral node non-extant after reconnection');
$ret = $zkh->exists($path);
ok((!$ret and $zkh->get_error() == ZNONODE and $! eq ''),
'exists(): checked ephemeral sequential node non-extant ' .
'after reconnection');
## get_children()
my @child_paths = ('abc');
@child_paths = $zkh->get_children($node_path);
ok((@child_paths == 0 and $zkh->get_error() == ZOK),
'get_children(): retrieved empty list of child nodes');
my $num_children = $zkh->get_children($node_path);
ok((defined($num_children) and $num_children == 0),
'get_children(): retrieved zero count of child nodes');
@child_paths = $zkh->get_children($node_path . '/NONE');
ok((@child_paths == 0 and $zkh->get_error() == ZNONODE and $! eq ''),
'get_children(): empty list returned for non-extant node');
$num_children = $zkh->get_children($node_path . '/NONE');
ok((!defined($num_children) and $zkh->get_error() == ZNONODE and $! eq ''),
'get_children(): undef returned for non-extant node');
SKIP: {
my $path = $zkh->create("$node_path/c1", 'foo',
'acl' => ZOO_OPEN_ACL_UNSAFE);
skip 'no connection to ZooKeeper', 6 unless
(defined($path) and $path eq "$node_path/c1");
my @child_paths = ('abc');
@child_paths = $zkh->get_children($node_path);
ok((@child_paths == 1 and $child_paths[0] eq 'c1'),
'get_children(): retrieved list of single child node');
my $num_children = $zkh->get_children($node_path);
ok((defined($num_children) and $num_children == 1),
'get_children(): retrieved count of single child node');
SKIP: {
my $path = $zkh->create("$node_path/c2", 'foo',
'acl' => ZOO_OPEN_ACL_UNSAFE);
skip 'no connection to ZooKeeper', 2 unless
(defined($path) and $path eq "$node_path/c2");
my @child_paths = ('abc');
@child_paths = $zkh->get_children($node_path);
ok((@child_paths == 2 and $child_paths[0] eq 'c1' and
$child_paths[1] eq 'c2'),
'get_children(): retrieved list of two child nodes');
my $num_children = $zkh->get_children($node_path);
ok((defined($num_children) and $num_children == 2),
'get_children(): retrieved count of two child nodes');
my $ret = $zkh->delete("$node_path/c2");
diag(sprintf('unable to delete node %s: %d, %s',
"$node_path/c2", $zkh->get_error(), $!)) unless
($ret);
}
@child_paths = ('abc');
@child_paths = $zkh->get_children($node_path);
ok((@child_paths == 1 and $child_paths[0] eq 'c1'),
'get_children(): retrieved list of single child node');
$num_children = $zkh->get_children($node_path);
ok((defined($num_children) and $num_children == 1),
'get_children(): retrieved count of single child node');
my $ret = $zkh->delete("$node_path/c1");
diag(sprintf('unable to delete node %s: %d, %s',
"$node_path/c1", $zkh->get_error(), $!)) unless ($ret);
}
## cleanup
$ret = $zkh->delete($node_path);
diag(sprintf('unable to delete node %s: %d, %s',
$node_path, $zkh->get_error(), $!)) unless ($ret);
}