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
|
module Gitlab
module ImportExport
class ProjectTreeRestorer
# Relations which cannot have both group_id and project_id at the same time
RESTRICT_PROJECT_AND_GROUP = %i(milestones).freeze
def initialize(user:, shared:, project:)
@path = File.join(shared.export_path, 'project.json')
@user = user
@shared = shared
@project = project
@project_id = project.id
end
def restore
begin
json = IO.read(@path)
@tree_hash = ActiveSupport::JSON.decode(json)
rescue => e
Rails.logger.error("Import/Export error: #{e.message}")
raise Gitlab::ImportExport::Error.new('Incorrect JSON format')
end
@project_members = @tree_hash.delete('project_members')
ActiveRecord::Base.no_touching do
create_relations
end
rescue => e
@shared.error(e)
false
end
def restored_project
@restored_project ||= restore_project
end
private
def members_mapper
@members_mapper ||= Gitlab::ImportExport::MembersMapper.new(exported_members: @project_members,
user: @user,
project: restored_project)
end
# Loops through the tree of models defined in import_export.yml and
# finds them in the imported JSON so they can be instantiated and saved
# in the DB. The structure and relationships between models are guessed from
# the configuration yaml file too.
# Finally, it updates each attribute in the newly imported project.
def create_relations
@saved = []
default_relation_list.each do |relation|
next unless relation.is_a?(Hash) || @tree_hash[relation.to_s].present?
if relation.is_a?(Hash)
create_sub_relations(relation, @tree_hash)
else
relation_key = relation.is_a?(Hash) ? relation.keys.first : relation
relation_hash_list = @tree_hash[relation_key.to_s]
save_relation_hash(relation_hash_list, relation_key, @saved)
end
# relation_key = relation.is_a?(Hash) ? relation.keys.first : relation
# relation_hash_list = @tree_hash[relation_key.to_s]
#
# next unless relation_hash_list
#
# if relation_hash_list.is_a?(Array)
# [relation_hash_list].flatten.each_slice(15) do |relation_hash_batch|
# save_relation_hash(relation_hash_batch, relation_key, saved)
# end
# else
# save_relation_hash(relation_hash_list, relation_key, saved)
# end
end
@saved.all?
end
def save_relation_hash(relation_hash_batch, relation_key)
relation_hash = create_relation(relation_key, relation_hash_batch)
@saved << restored_project.append_or_update_attribute(relation_key, relation_hash)
@restored_project = Project.find_by_id(@project_id)
end
def default_relation_list
Gitlab::ImportExport::Reader.new(shared: @shared).tree.reject do |model|
model.is_a?(Hash) && model[:project_members]
end
end
def restore_project
return @project unless @tree_hash
@project.update_columns(project_params)
@project
end
def project_params
@tree_hash.reject do |key, value|
# return params that are not 1 to many or 1 to 1 relations
value.respond_to?(:each) && !Project.column_names.include?(key)
end
end
# Given a relation hash containing one or more models and its relationships,
# loops through each model and each object from a model type and
# and assigns its correspondent attributes hash from +tree_hash+
# Example:
# +relation_key+ issues, loops through the list of *issues* and for each individual
# issue, finds any subrelations such as notes, creates them and assign them back to the hash
#
# Recursively calls this method if the sub-relation is a hash containing more sub-relations
def create_sub_relations(relation, tree_hash, save = true)
relation_key = relation.keys.first.to_s
return if tree_hash[relation_key].blank?
[tree_hash[relation_key]].flatten.each do |relation_item|
relation.values.flatten.each do |sub_relation|
# We just use author to get the user ID, do not attempt to create an instance.
next if sub_relation == :author
create_sub_relations(sub_relation, relation_item, false) if sub_relation.is_a?(Hash)
relation_hash, sub_relation = assign_relation_hash(relation_item, sub_relation)
relation_item[sub_relation.to_s] = create_relation(sub_relation, relation_hash) unless relation_hash.blank?
end
save_relation_hash([relation_item], relation_key) if save
tree_hash.delete(relation_key) if save
end
end
def assign_relation_hash(relation_item, sub_relation)
if sub_relation.is_a?(Hash)
relation_hash = relation_item[sub_relation.keys.first.to_s]
sub_relation = sub_relation.keys.first
else
relation_hash = relation_item[sub_relation.to_s]
end
[relation_hash, sub_relation]
end
def create_relation(relation, relation_hash_list)
relation_type = relation.to_sym
relation_array = [relation_hash_list].flatten.map do |relation_hash|
Gitlab::ImportExport::RelationFactory.create(relation_sym: relation_type,
relation_hash: parsed_relation_hash(relation_hash, relation_type),
members_mapper: members_mapper,
user: @user,
project: restored_project)
end.compact
relation_hash_list.is_a?(Array) ? relation_array : relation_array.first
end
def parsed_relation_hash(relation_hash, relation_type)
if RESTRICT_PROJECT_AND_GROUP.include?(relation_type)
params = {}
params['group_id'] = restored_project.group.try(:id) if relation_hash['group_id']
params['project_id'] = restored_project.id if relation_hash['project_id']
else
params = { 'group_id' => restored_project.group.try(:id), 'project_id' => restored_project.id }
end
relation_hash.merge(params)
end
end
end
end
|
