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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
# frozen_string_literal: true
module Banzai
module Filter
module References
class ReferenceCache
include Gitlab::Utils::StrongMemoize
include RequestStoreReferenceCache
def initialize(filter, context, result)
@filter = filter
@context = context
@result = result || {}
end
def load_reference_cache(nodes)
load_references_per_parent(nodes)
load_parent_per_reference
load_records_per_parent
@cache_loaded = true
end
# Loads all object references (e.g. issue IDs) per
# project/group they belong to.
def load_references_per_parent(nodes)
@references_per_parent ||= {}
@references_per_parent[parent_type] ||= begin
refs = Hash.new { |hash, key| hash[key] = Set.new }
prepare_doc_for_scan(filter.doc).to_enum(:scan, regex).each do
parent_path = if parent_type == :project
full_project_path($~[:namespace], $~[:project])
else
full_group_path($~[:group])
end
ident = filter.identifier($~)
refs[parent_path] << ident if ident
end
refs
end
end
def references_per_parent
@references_per_parent[parent_type]
end
# Returns a Hash containing referenced projects grouped per their full
# path.
def load_parent_per_reference
@per_reference ||= {}
@per_reference[parent_type] ||= begin
refs = references_per_parent.keys
parent_ref = {}
# if we already have a parent, no need to query it again
refs.each do |ref|
next unless ref
if context[:project]&.full_path == ref
parent_ref[ref] = context[:project]
elsif context[:group]&.full_path == ref
parent_ref[ref] = context[:group]
end
refs -= [ref] if parent_ref[ref]
end
find_for_paths(refs).index_by(&:full_path).merge(parent_ref)
end
end
def parent_per_reference
@per_reference[parent_type]
end
def load_records_per_parent
@_records_per_project ||= {}
@_records_per_project[filter.object_class.to_s.underscore] ||= begin
hash = Hash.new { |h, k| h[k] = {} }
parent_per_reference.each do |path, parent|
record_ids = references_per_parent[path]
filter.parent_records(parent, record_ids).each do |record|
hash[parent][filter.record_identifier(record)] = record
end
end
hash
end
end
def records_per_parent
@_records_per_project[filter.object_class.to_s.underscore]
end
def objects_for_paths(paths)
klass = parent_type.to_s.camelize.constantize
result = klass.where_full_path_in(paths)
return result if parent_type == :group
result.includes(namespace: :route) if parent_type == :project
end
# Returns projects for the given paths.
def find_for_paths(paths)
if Gitlab::SafeRequestStore.active?
cache = refs_cache
to_query = paths - cache.keys
unless to_query.empty?
records = objects_for_paths(to_query)
found = []
records.each do |record|
ref = record.full_path
get_or_set_cache(cache, ref) { record }
found << ref
end
not_found = to_query - found
not_found.each do |ref|
get_or_set_cache(cache, ref) { nil }
end
end
cache.slice(*paths).values.compact
else
objects_for_paths(paths)
end
end
def current_parent_path
strong_memoize(:current_parent_path) do
parent&.full_path
end
end
def current_project_namespace_path
strong_memoize(:current_project_namespace_path) do
project&.namespace&.full_path
end
end
def full_project_path(namespace, project_ref)
return current_parent_path unless project_ref
namespace_ref = namespace || current_project_namespace_path
"#{namespace_ref}/#{project_ref}"
end
def full_group_path(group_ref)
return current_parent_path unless group_ref
group_ref
end
def cache_loaded?
!!@cache_loaded
end
private
attr_accessor :filter, :context, :result
delegate :project, :group, :parent, :parent_type, to: :filter
def regex
strong_memoize(:regex) do
[
filter.object_class.link_reference_pattern,
filter.object_class.reference_pattern
].compact.reduce { |a, b| Regexp.union(a, b) }
end
end
def refs_cache
Gitlab::SafeRequestStore["banzai_#{parent_type}_refs".to_sym] ||= {}
end
def prepare_doc_for_scan(doc)
html = if Feature.enabled?(:reference_cache_memoization, project, default_enabled: :yaml)
result[:rendered_html] ||= doc.to_html
else
doc.to_html
end
filter.requires_unescaping? ? unescape_html_entities(html) : html
end
def unescape_html_entities(text)
CGI.unescapeHTML(text.to_s)
end
end
end
end
end
Banzai::Filter::References::ReferenceCache.prepend_mod
|