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
|
#The MIT License (MIT)
#Copyright (c) 2014 Microsoft Corporation
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#SOFTWARE.
"""Test Partition Resolver.
"""
class TestPartitionResolver(object):
"""This is a test PartitionResolver used for resolving the collection(s) based on the partitionKey.
"""
def __init__(self, collection_links):
"""Initializes the TestPartitionResolver with the list of collections participating in partitioning
:Parameters:
- `collection_links`: list, Self Links or ID based Links for the collections participating in partitioning
"""
self.collection_links = collection_links
def ResolveForCreate(self, document):
"""Resolves the collection for creating the document based on the partition key
:Parameters:
- `document`: dict, document resource
:Returns:
str, collection Self link or Name based link which should handle the Create operation
"""
# For this TestPartitionResolver, Id property of the document is the partition key
partition_key = document['id']
return self._GetDocumentCollection(self._GetHashCode(partition_key))
def ResolveForRead(self, partition_key):
"""Resolves the collection for reading/querying the document based on the partition key
:Parameters:
- `partition_key`: str, partition key
:Returns:
str, collection Self link(s) or Name based link(s) which should handle the Read operation
"""
# For Read operations, partitionKey can be None in which case we return all collection links
if partition_key is None:
return self.collection_links
else:
return [self._GetDocumentCollection(self._GetHashCode(partition_key))]
# Calculates the hashCode from the partition key
def _GetHashCode(self, partition_key):
return int(partition_key)
# Gets the Document Collection from the hash code
def _GetDocumentCollection(self, hashCode):
return self.collection_links[abs(hashCode) % len(self.collection_links)]
|
