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
|
import sqlalchemy as sql
from sqlalchemy.orm import sessionmaker
from keystone.common.sql import migration_helpers
def rename_with_constraints(meta, legacy_project_table_name,
new_project_table_name,
legacy_user_project_membership_table_name,
new_user_project_membership_table_name):
# Not all RDBMSs support renaming a table that has foreign key constraints
# on it, so drop FK constraints before renaming and then replace FKs
# afterwards.
credential_table = sql.Table('credential', meta, autoload=True)
group_project_meta_table = sql.Table('group_project_metadata', meta,
autoload=True)
project_table = sql.Table(legacy_project_table_name, meta, autoload=True)
user_project_membership_table = sql.Table(
legacy_user_project_membership_table_name, meta, autoload=True)
user_table = sql.Table('user', meta, autoload=True)
constraints = [{'table': credential_table,
'fk_column': 'project_id',
'ref_column': project_table.c.id},
{'table': group_project_meta_table,
'fk_column': 'project_id',
'ref_column': project_table.c.id},
{'table': user_project_membership_table,
'fk_column': 'tenant_id',
'ref_column': project_table.c.id},
{'table': user_project_membership_table,
'fk_column': 'user_id',
'ref_column': user_table.c.id}]
renames = {
new_project_table_name: project_table,
new_user_project_membership_table_name: user_project_membership_table}
migration_helpers.rename_tables_with_constraints(renames, constraints,
meta.bind)
def upgrade_with_rename(meta, migrate_engine):
legacy_project_table_name = 'tenant'
new_project_table_name = 'project'
legacy_user_project_membership_table_name = 'user_tenant_membership'
new_user_project_membership_table_name = 'user_project_membership'
rename_with_constraints(meta, legacy_project_table_name,
new_project_table_name,
legacy_user_project_membership_table_name,
new_user_project_membership_table_name)
def downgrade_with_rename(meta, migrate_engine):
legacy_project_table_name = 'project'
new_project_table_name = 'tenant'
legacy_user_project_membership_table_name = 'user_project_membership'
new_user_project_membership_table_name = 'user_tenant_membership'
rename_with_constraints(meta, legacy_project_table_name,
new_project_table_name,
legacy_user_project_membership_table_name,
new_user_project_membership_table_name)
def upgrade_with_copy(meta, migrate_engine):
sql.Table('user', meta, autoload=True)
project_table = sql.Table(
'project',
meta,
sql.Column('id', sql.String(64), primary_key=True),
sql.Column('name', sql.String(64), unique=True, nullable=False),
sql.Column('extra', sql.Text()),
sql.Column('description', sql.Text(), nullable=True),
sql.Column('enabled', sql.types.Boolean, default=True))
project_table.create(migrate_engine, checkfirst=True)
user_project_membership_table = sql.Table(
'user_project_membership',
meta,
sql.Column(
'user_id',
sql.String(64),
sql.ForeignKey('user.id'),
primary_key=True),
sql.Column(
'tenant_id',
sql.String(64),
sql.ForeignKey('project.id'),
primary_key=True))
user_project_membership_table.create(migrate_engine, checkfirst=True)
session = sessionmaker(bind=migrate_engine)()
tenant_table = sql.Table('tenant', meta, autoload=True)
insert = project_table.insert()
for tenant in session.query(tenant_table):
insert.execute({'id': tenant.id,
'name': tenant.name,
'extra': tenant.extra,
'description': tenant.description,
'enabled': tenant.enabled})
user_tenant_membership_table = sql.Table('user_tenant_membership',
meta,
autoload=True)
insert = user_project_membership_table.insert()
for user_id, tenant_id in session.query(user_tenant_membership_table):
insert.execute({'user_id': user_id, 'tenant_id': tenant_id})
session.commit()
session.close()
user_tenant_membership_table.drop()
tenant_table.drop()
def downgrade_with_copy(meta, migrate_engine):
sql.Table('user', meta, autoload=True)
tenant_table = sql.Table(
'tenant',
meta,
sql.Column('id', sql.String(64), primary_key=True),
sql.Column('name', sql.String(64), unique=True, nullable=False),
sql.Column('extra', sql.Text()),
sql.Column('description', sql.Text(), nullable=True),
sql.Column('enabled', sql.types.Boolean))
tenant_table.create(migrate_engine, checkfirst=True)
user_tenant_membership_table = sql.Table(
'user_tenant_membership',
meta,
sql.Column(
'user_id',
sql.String(64),
sql.ForeignKey('user.id'),
primary_key=True),
sql.Column(
'tenant_id',
sql.String(64),
sql.ForeignKey('tenant.id'),
primary_key=True))
user_tenant_membership_table.create(migrate_engine, checkfirst=True)
session = sessionmaker(bind=migrate_engine)()
project_table = sql.Table('project', meta, autoload=True)
insert = tenant_table.insert()
for project in session.query(project_table):
insert.values(project).execute()
project_table.drop()
user_project_membership_table = sql.Table('user_project_membership',
meta,
autoload=True)
insert = user_tenant_membership_table.insert()
for membership in session.query(user_project_membership_table):
insert.execute(membership)
user_project_membership_table.drop()
session.commit()
session.close()
def upgrade(migrate_engine):
meta = sql.MetaData()
meta.bind = migrate_engine
if migrate_engine.name == "sqlite":
upgrade_with_copy(meta, migrate_engine)
else:
upgrade_with_rename(meta, migrate_engine)
def downgrade(migrate_engine):
meta = sql.MetaData()
meta.bind = migrate_engine
if migrate_engine.name == "sqlite":
downgrade_with_copy(meta, migrate_engine)
else:
downgrade_with_rename(meta, migrate_engine)
|
