root / snf-astakos-app / astakos / quotaholder_app / commission.py @ f6ff3033
History | View | Annotate | Download (5 kB)
1 | d03796c2 | Giorgos Korfiatis | # Copyright 2013 GRNET S.A. All rights reserved.
|
---|---|---|---|
2 | d03796c2 | Giorgos Korfiatis | #
|
3 | d03796c2 | Giorgos Korfiatis | # Redistribution and use in source and binary forms, with or
|
4 | d03796c2 | Giorgos Korfiatis | # without modification, are permitted provided that the following
|
5 | d03796c2 | Giorgos Korfiatis | # conditions are met:
|
6 | d03796c2 | Giorgos Korfiatis | #
|
7 | d03796c2 | Giorgos Korfiatis | # 1. Redistributions of source code must retain the above
|
8 | d03796c2 | Giorgos Korfiatis | # copyright notice, this list of conditions and the following
|
9 | d03796c2 | Giorgos Korfiatis | # disclaimer.
|
10 | d03796c2 | Giorgos Korfiatis | #
|
11 | d03796c2 | Giorgos Korfiatis | # 2. Redistributions in binary form must reproduce the above
|
12 | d03796c2 | Giorgos Korfiatis | # copyright notice, this list of conditions and the following
|
13 | d03796c2 | Giorgos Korfiatis | # disclaimer in the documentation and/or other materials
|
14 | d03796c2 | Giorgos Korfiatis | # provided with the distribution.
|
15 | d03796c2 | Giorgos Korfiatis | #
|
16 | d03796c2 | Giorgos Korfiatis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 | d03796c2 | Giorgos Korfiatis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 | d03796c2 | Giorgos Korfiatis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 | d03796c2 | Giorgos Korfiatis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 | d03796c2 | Giorgos Korfiatis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 | d03796c2 | Giorgos Korfiatis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 | d03796c2 | Giorgos Korfiatis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 | d03796c2 | Giorgos Korfiatis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 | d03796c2 | Giorgos Korfiatis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 | d03796c2 | Giorgos Korfiatis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 | d03796c2 | Giorgos Korfiatis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 | d03796c2 | Giorgos Korfiatis | # POSSIBILITY OF SUCH DAMAGE.
|
28 | d03796c2 | Giorgos Korfiatis | #
|
29 | d03796c2 | Giorgos Korfiatis | # The views and conclusions contained in the software and
|
30 | d03796c2 | Giorgos Korfiatis | # documentation are those of the authors and should not be
|
31 | d03796c2 | Giorgos Korfiatis | # interpreted as representing official policies, either expressed
|
32 | d03796c2 | Giorgos Korfiatis | # or implied, of GRNET S.A.
|
33 | d03796c2 | Giorgos Korfiatis | |
34 | ec5e00aa | Giorgos Korfiatis | from astakos.quotaholder_app.exception import NoCapacityError, NoQuantityError |
35 | d03796c2 | Giorgos Korfiatis | |
36 | d03796c2 | Giorgos Korfiatis | |
37 | d03796c2 | Giorgos Korfiatis | class Operation(object): |
38 | d03796c2 | Giorgos Korfiatis | |
39 | d03796c2 | Giorgos Korfiatis | @staticmethod
|
40 | d03796c2 | Giorgos Korfiatis | def assertions(holding): |
41 | 68b991bc | Giorgos Korfiatis | assert(holding.usage_min <= holding.usage_max)
|
42 | d03796c2 | Giorgos Korfiatis | |
43 | d03796c2 | Giorgos Korfiatis | @classmethod
|
44 | d03796c2 | Giorgos Korfiatis | def _prepare(cls, holding, quantity, check=True): |
45 | d03796c2 | Giorgos Korfiatis | raise NotImplementedError |
46 | d03796c2 | Giorgos Korfiatis | |
47 | d03796c2 | Giorgos Korfiatis | @classmethod
|
48 | d03796c2 | Giorgos Korfiatis | def prepare(cls, holding, quantity, check=True): |
49 | d03796c2 | Giorgos Korfiatis | cls.assertions(holding) |
50 | 79e3da8a | Giorgos Korfiatis | cls._prepare(holding, quantity, check) |
51 | d03796c2 | Giorgos Korfiatis | |
52 | d03796c2 | Giorgos Korfiatis | @classmethod
|
53 | d03796c2 | Giorgos Korfiatis | def _finalize(cls, holding, quantity): |
54 | d03796c2 | Giorgos Korfiatis | raise NotImplementedError |
55 | d03796c2 | Giorgos Korfiatis | |
56 | d03796c2 | Giorgos Korfiatis | @classmethod
|
57 | d03796c2 | Giorgos Korfiatis | def finalize(cls, holding, quantity): |
58 | d03796c2 | Giorgos Korfiatis | cls.assertions(holding) |
59 | d03796c2 | Giorgos Korfiatis | cls._finalize(holding, quantity) |
60 | d03796c2 | Giorgos Korfiatis | |
61 | d03796c2 | Giorgos Korfiatis | @classmethod
|
62 | d03796c2 | Giorgos Korfiatis | def undo(cls, holding, quantity): |
63 | d03796c2 | Giorgos Korfiatis | cls.prepare(holding, -quantity, check=False)
|
64 | d03796c2 | Giorgos Korfiatis | |
65 | d03796c2 | Giorgos Korfiatis | @classmethod
|
66 | d03796c2 | Giorgos Korfiatis | def revert(cls, holding, quantity): |
67 | d03796c2 | Giorgos Korfiatis | # Assertions do not hold when reverting
|
68 | d03796c2 | Giorgos Korfiatis | cls._prepare(holding, -quantity, check=False)
|
69 | d03796c2 | Giorgos Korfiatis | |
70 | 79e3da8a | Giorgos Korfiatis | @classmethod
|
71 | 79e3da8a | Giorgos Korfiatis | def provision(cls, holding, quantity, importing=True): |
72 | 79e3da8a | Giorgos Korfiatis | return {'holder': holding.holder, |
73 | 79e3da8a | Giorgos Korfiatis | 'source': holding.source,
|
74 | 79e3da8a | Giorgos Korfiatis | 'resource': holding.resource,
|
75 | 79e3da8a | Giorgos Korfiatis | 'quantity': quantity if importing else -quantity, |
76 | 79e3da8a | Giorgos Korfiatis | } |
77 | 79e3da8a | Giorgos Korfiatis | |
78 | d03796c2 | Giorgos Korfiatis | |
79 | d03796c2 | Giorgos Korfiatis | class Import(Operation): |
80 | d03796c2 | Giorgos Korfiatis | |
81 | d03796c2 | Giorgos Korfiatis | @classmethod
|
82 | d03796c2 | Giorgos Korfiatis | def _prepare(cls, holding, quantity, check=True): |
83 | 68b991bc | Giorgos Korfiatis | usage_max = holding.usage_max |
84 | 68b991bc | Giorgos Korfiatis | new_usage_max = usage_max + quantity |
85 | d03796c2 | Giorgos Korfiatis | |
86 | b78f2b29 | Giorgos Korfiatis | limit = holding.limit |
87 | 68b991bc | Giorgos Korfiatis | if check and new_usage_max > limit: |
88 | d03796c2 | Giorgos Korfiatis | holder = holding.holder |
89 | d03796c2 | Giorgos Korfiatis | resource = holding.resource |
90 | d03796c2 | Giorgos Korfiatis | m = ("%s has not enough capacity of %s." % (holder, resource))
|
91 | 79e3da8a | Giorgos Korfiatis | provision = cls.provision(holding, quantity, importing=True)
|
92 | d03796c2 | Giorgos Korfiatis | raise NoCapacityError(m,
|
93 | 79e3da8a | Giorgos Korfiatis | provision=provision, |
94 | e311d555 | Giorgos Korfiatis | limit=limit, |
95 | 68b991bc | Giorgos Korfiatis | usage=usage_max) |
96 | d03796c2 | Giorgos Korfiatis | |
97 | 68b991bc | Giorgos Korfiatis | holding.usage_max = new_usage_max |
98 | d03796c2 | Giorgos Korfiatis | holding.save() |
99 | d03796c2 | Giorgos Korfiatis | |
100 | d03796c2 | Giorgos Korfiatis | @classmethod
|
101 | d03796c2 | Giorgos Korfiatis | def _finalize(cls, holding, quantity): |
102 | 68b991bc | Giorgos Korfiatis | holding.usage_min += quantity |
103 | d03796c2 | Giorgos Korfiatis | holding.save() |
104 | d03796c2 | Giorgos Korfiatis | |
105 | d03796c2 | Giorgos Korfiatis | |
106 | d03796c2 | Giorgos Korfiatis | class Release(Operation): |
107 | d03796c2 | Giorgos Korfiatis | |
108 | d03796c2 | Giorgos Korfiatis | @classmethod
|
109 | d03796c2 | Giorgos Korfiatis | def _prepare(cls, holding, quantity, check=True): |
110 | 68b991bc | Giorgos Korfiatis | usage_min = holding.usage_min |
111 | 68b991bc | Giorgos Korfiatis | new_usage_min = usage_min - quantity |
112 | d03796c2 | Giorgos Korfiatis | |
113 | 68b991bc | Giorgos Korfiatis | if check and new_usage_min < 0: |
114 | d03796c2 | Giorgos Korfiatis | holder = holding.holder |
115 | d03796c2 | Giorgos Korfiatis | resource = holding.resource |
116 | d03796c2 | Giorgos Korfiatis | m = ("%s attempts to release more %s than it contains." %
|
117 | d03796c2 | Giorgos Korfiatis | (holder, resource)) |
118 | 79e3da8a | Giorgos Korfiatis | provision = cls.provision(holding, quantity, importing=False)
|
119 | 79e3da8a | Giorgos Korfiatis | raise NoQuantityError(m,
|
120 | 79e3da8a | Giorgos Korfiatis | provision=provision, |
121 | 3a8e56bc | Giorgos Korfiatis | limit=0,
|
122 | 3a8e56bc | Giorgos Korfiatis | usage=usage_min) |
123 | d03796c2 | Giorgos Korfiatis | |
124 | 68b991bc | Giorgos Korfiatis | holding.usage_min = new_usage_min |
125 | d03796c2 | Giorgos Korfiatis | holding.save() |
126 | d03796c2 | Giorgos Korfiatis | |
127 | d03796c2 | Giorgos Korfiatis | @classmethod
|
128 | d03796c2 | Giorgos Korfiatis | def _finalize(cls, holding, quantity): |
129 | 68b991bc | Giorgos Korfiatis | holding.usage_max -= quantity |
130 | d03796c2 | Giorgos Korfiatis | holding.save() |
131 | d03796c2 | Giorgos Korfiatis | |
132 | d03796c2 | Giorgos Korfiatis | |
133 | d03796c2 | Giorgos Korfiatis | class Operations(object): |
134 | d03796c2 | Giorgos Korfiatis | def __init__(self): |
135 | d03796c2 | Giorgos Korfiatis | self.operations = []
|
136 | d03796c2 | Giorgos Korfiatis | |
137 | 79e3da8a | Giorgos Korfiatis | def prepare(self, operation, holding, quantity, force): |
138 | 79e3da8a | Giorgos Korfiatis | check = not force
|
139 | 79e3da8a | Giorgos Korfiatis | operation.prepare(holding, quantity, check) |
140 | d03796c2 | Giorgos Korfiatis | self.operations.append((operation, holding, quantity))
|
141 | d03796c2 | Giorgos Korfiatis | |
142 | d03796c2 | Giorgos Korfiatis | def revert(self): |
143 | d03796c2 | Giorgos Korfiatis | for (operation, holding, quantity) in self.operations: |
144 | d03796c2 | Giorgos Korfiatis | operation.revert(holding, quantity) |
145 | 6c0f4562 | Giorgos Korfiatis | |
146 | 6c0f4562 | Giorgos Korfiatis | |
147 | 6c0f4562 | Giorgos Korfiatis | def finalize(operation, holding, quantity): |
148 | 6c0f4562 | Giorgos Korfiatis | operation.finalize(holding, quantity) |
149 | 6c0f4562 | Giorgos Korfiatis | |
150 | 6c0f4562 | Giorgos Korfiatis | |
151 | 6c0f4562 | Giorgos Korfiatis | def undo(operation, holding, quantity): |
152 | 6c0f4562 | Giorgos Korfiatis | operation.undo(holding, quantity) |