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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
import pytest
from django.core.exceptions import ImproperlyConfigured
from django.db import connection, models
from psqlextra.backend.schema import PostgresSchemaEditor
from psqlextra.types import PostgresPartitioningMethod
from . import db_introspection
from .fake_model import define_fake_partitioned_model
@pytest.mark.postgres_version(lt=110000)
def test_schema_editor_create_delete_partitioned_model_range():
"""Tests whether creating a partitioned model and adding a list partition
to it using the :see:PostgresSchemaEditor works."""
method = PostgresPartitioningMethod.RANGE
key = ["timestamp"]
model = define_fake_partitioned_model(
{"name": models.TextField(), "timestamp": models.DateTimeField()},
{"method": method, "key": key},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
schema_editor.add_range_partition(model, "pt1", "2019-01-01", "2019-02-01")
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert table.name == model._meta.db_table
assert table.method == method
assert table.key == key
assert table.partitions[0].full_name == model._meta.db_table + "_pt1"
schema_editor.delete_partitioned_model(model)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert not table
partitions = db_introspection.get_partitions(model._meta.db_table)
assert len(partitions) == 0
@pytest.mark.postgres_version(lt=110000)
def test_schema_editor_create_delete_partitioned_model_list():
"""Tests whether creating a partitioned model and adding a range partition
to it using the :see:PostgresSchemaEditor works."""
method = PostgresPartitioningMethod.LIST
key = ["category"]
model = define_fake_partitioned_model(
{"name": models.TextField(), "category": models.TextField()},
{"method": method, "key": key},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
schema_editor.add_list_partition(model, "pt1", ["car", "boat"])
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert table.name == model._meta.db_table
assert table.method == method
assert table.key == key
assert table.partitions[0].full_name == model._meta.db_table + "_pt1"
schema_editor.delete_partitioned_model(model)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert not table
partitions = db_introspection.get_partitions(model._meta.db_table)
assert len(partitions) == 0
@pytest.mark.postgres_version(lt=110000)
@pytest.mark.parametrize("key", [["name"], ["id", "name"]])
def test_schema_editor_create_delete_partitioned_model_hash(key):
"""Tests whether creating a partitioned model and adding a hash partition
to it using the :see:PostgresSchemaEditor works."""
method = PostgresPartitioningMethod.HASH
model = define_fake_partitioned_model(
{"name": models.TextField()},
{"method": method, "key": key},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
schema_editor.add_hash_partition(model, "pt1", modulus=1, remainder=0)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert table.name == model._meta.db_table
assert table.method == method
assert table.key == key
assert table.partitions[0].full_name == model._meta.db_table + "_pt1"
schema_editor.delete_partitioned_model(model)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert not table
partitions = db_introspection.get_partitions(model._meta.db_table)
assert len(partitions) == 0
@pytest.mark.postgres_version(lt=110000)
def test_schema_editor_create_delete_partitioned_model_default():
"""Tests whether creating a partitioned model and adding a default
partition to it using the :see:PostgresSchemaEditor works."""
method = PostgresPartitioningMethod.LIST
key = ["category"]
model = define_fake_partitioned_model(
{"name": models.TextField(), "category": models.TextField()},
{"method": method, "key": key},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
schema_editor.add_default_partition(model, "default")
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert table.name == model._meta.db_table
assert table.method == method
assert table.key == key
assert table.partitions[0].full_name == model._meta.db_table + "_default"
schema_editor.delete_partitioned_model(model)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert not table
partitions = db_introspection.get_partitions(model._meta.db_table)
assert len(partitions) == 0
@pytest.mark.postgres_version(lt=110000)
def test_schema_editor_create_partitioned_model_no_method():
"""Tests whether its possible to create a partitioned model without
explicitly setting a partitioning method.
The default is "range" so setting one explicitely should not be
needed.
"""
model = define_fake_partitioned_model(
{"name": models.TextField(), "timestamp": models.DateTimeField()},
{"key": ["timestamp"]},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
pt = db_introspection.get_partitioned_table(model._meta.db_table)
assert pt.method == PostgresPartitioningMethod.RANGE
assert len(pt.partitions) == 0
def test_schema_editor_create_partitioned_model_no_key():
"""Tests whether trying to create a partitioned model without a
partitioning key raises :see:ImproperlyConfigured as its not possible to
create a partitioned model without one and we cannot have a sane
default."""
model = define_fake_partitioned_model(
{"name": models.TextField(), "timestamp": models.DateTimeField()},
{"method": PostgresPartitioningMethod.RANGE},
)
schema_editor = PostgresSchemaEditor(connection)
with pytest.raises(ImproperlyConfigured):
schema_editor.create_partitioned_model(model)
@pytest.mark.postgres_version(lt=110000)
def test_schema_editor_add_range_partition():
"""Tests whether adding a range partition works."""
model = define_fake_partitioned_model(
{"name": models.TextField(), "timestamp": models.DateTimeField()},
{"key": ["timestamp"]},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
schema_editor.add_range_partition(
model,
name="mypartition",
from_values="2019-1-1",
to_values="2019-2-1",
comment="test",
)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert len(table.partitions) == 1
assert table.partitions[0].name == "mypartition"
assert (
table.partitions[0].full_name == f"{model._meta.db_table}_mypartition"
)
assert table.partitions[0].comment == "test"
schema_editor.delete_partition(model, "mypartition")
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert len(table.partitions) == 0
@pytest.mark.postgres_version(lt=110000)
def test_schema_editor_add_list_partition():
"""Tests whether adding a list partition works."""
model = define_fake_partitioned_model(
{"name": models.TextField()},
{"method": PostgresPartitioningMethod.LIST, "key": ["name"]},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
schema_editor.add_list_partition(
model, name="mypartition", values=["1"], comment="test"
)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert len(table.partitions) == 1
assert table.partitions[0].name == "mypartition"
assert (
table.partitions[0].full_name == f"{model._meta.db_table}_mypartition"
)
assert table.partitions[0].comment == "test"
schema_editor.delete_partition(model, "mypartition")
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert len(table.partitions) == 0
@pytest.mark.postgres_version(lt=110000)
@pytest.mark.parametrize(
"method,key",
[
(PostgresPartitioningMethod.RANGE, ["timestamp"]),
(PostgresPartitioningMethod.LIST, ["name"]),
],
)
def test_schema_editor_add_default_partition(method, key):
model = define_fake_partitioned_model(
{"name": models.TextField(), "timestamp": models.DateTimeField()},
{"method": method, "key": key},
)
schema_editor = PostgresSchemaEditor(connection)
schema_editor.create_partitioned_model(model)
schema_editor.add_default_partition(
model, name="mypartition", comment="test"
)
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert len(table.partitions) == 1
assert table.partitions[0].name == "mypartition"
assert (
table.partitions[0].full_name == f"{model._meta.db_table}_mypartition"
)
assert table.partitions[0].comment == "test"
schema_editor.delete_partition(model, "mypartition")
table = db_introspection.get_partitioned_table(model._meta.db_table)
assert len(table.partitions) == 0
|
