summaryrefslogtreecommitdiffstats
path: root/showdependencytree.cgi
blob: fb8a59cc37f7f193efdaecda3c7ef95b2899c0a5 (plain)
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
#!/usr/bin/perl -wT
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

use 5.10.1;
use strict;
use lib qw(. lib);

use Bugzilla;
use Bugzilla::Error;
use Bugzilla::Bug;

use List::Util qw(max);

my $user = Bugzilla->login();

my $cgi = Bugzilla->cgi;
my $template = Bugzilla->template;
my $vars = {};
# Connect to the shadow database if this installation is using one to improve
# performance.
my $dbh = Bugzilla->switch_to_shadow_db();

################################################################################
# Data/Security Validation                                                     #
################################################################################

# Make sure the bug ID is a positive integer representing an existing
# bug that the user is authorized to access.
my $bug = Bugzilla::Bug->check(scalar $cgi->param('id'));
my $id = $bug->id;

local our $hide_resolved = $cgi->param('hide_resolved') ? 1 : 0;
local our $maxdepth = $cgi->param('maxdepth') || 0;
if ($maxdepth !~ /^\d+$/) {
    $maxdepth = 0;
}

################################################################################
# Main Section                                                                 #
################################################################################

# Stores the greatest depth to which either tree goes.
local our $realdepth = 0;

# Generate the tree of bugs that this bug depends on and a list of IDs
# appearing in the tree.
my $dependson_tree = { $id => $bug };
my $dependson_ids = {};
GenerateTree($id, "dependson", 1, $dependson_tree, $dependson_ids);
$vars->{'dependson_tree'} = $dependson_tree;
$vars->{'dependson_ids'}  = [keys(%$dependson_ids)];

# Generate the tree of bugs that this bug blocks and a list of IDs
# appearing in the tree.
my $blocked_tree = { $id => $bug };
my $blocked_ids = {};
GenerateTree($id, "blocked", 1, $blocked_tree, $blocked_ids);
$vars->{'blocked_tree'} = $blocked_tree;
$vars->{'blocked_ids'}  = [keys(%$blocked_ids)];

$vars->{'bugid'}         = $id;
$vars->{'realdepth'}     = $realdepth;
$vars->{'maxdepth'}      = $maxdepth;
$vars->{'hide_resolved'} = $hide_resolved;

print $cgi->header();
$template->process("bug/dependency-tree.html.tmpl", $vars)
  || ThrowTemplateError($template->error());

# Tree Generation Functions

sub GenerateTree {
    my ($bug_id, $relationship, $depth, $bugs, $ids) = @_;

    # determine just the list of bug ids
    _generate_bug_ids($bug_id, $relationship, $depth, $ids);
    my $bug_ids = [ keys %$ids ];
    return unless @$bug_ids;

    # load all the bugs at once
    foreach my $bug (@{ Bugzilla::Bug->new_from_list($bug_ids) }) {
        if (!$bug->{error}) {
            $bugs->{$bug->id} = $bug;
        }
    }

    # preload bug visibility
    Bugzilla->user->visible_bugs($bug_ids);

    # and generate the tree
    _generate_tree($bug_id, $relationship, $depth, $bugs, $ids);
}

sub _generate_bug_ids {
    my ($bug_id, $relationship, $depth, $ids) = @_;

    # Record this depth in the global $realdepth variable if it's farther
    # than we've gone before.
    $realdepth = max($realdepth, $depth);

    my $dependencies = _get_dependencies($bug_id, $relationship);
    foreach my $dep_id (@$dependencies) {
        if (!$maxdepth || $depth <= $maxdepth) {
            $ids->{$dep_id} = 1;
            _generate_bug_ids($dep_id, $relationship, $depth + 1, $ids);
        }
    }
}

sub _generate_tree {
    my ($bug_id, $relationship, $depth, $bugs, $ids) = @_;

    my $dependencies = _get_dependencies($bug_id, $relationship);

    foreach my $dep_id (@$dependencies) {
        # recurse
        if (!$maxdepth || $depth < $maxdepth) {
            _generate_tree($dep_id, $relationship, $depth + 1, $bugs, $ids);
        }

        # remove bugs according to visiblity
        if (!Bugzilla->user->can_see_bug($dep_id)) {
            delete $ids->{$dep_id};
        }
        elsif (!grep { $_ == $dep_id } @{ $bugs->{dependencies}->{$bug_id} }) {
            push @{ $bugs->{dependencies}->{$bug_id} }, $dep_id;
        }
    }
}

sub _get_dependencies {
    my ($bug_id, $relationship) = @_;
    my $cache = Bugzilla->request_cache->{dependency_cache} ||= {};
    return $cache->{$bug_id}->{$relationship} ||=
        $relationship eq 'dependson'
        ? Bugzilla::Bug::EmitDependList('blocked',   'dependson', $bug_id, $hide_resolved)
        : Bugzilla::Bug::EmitDependList('dependson', 'blocked',   $bug_id, $hide_resolved);
}