Mercurial > public > mercurial-scm > hg

annotate mercurial/bundle2.py @ 20948:329cd74b52bd

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
bundle2: introduce a bundleoperation object This object will hold all data and state gathered through the processing of a bundle. This will allow: - each handler to be aware of the things unbundled so far - the caller to retrieve data about the execution - bear useful object and logic (like repo, transaction) - bear possible bundle2 reply triggered by the unbundling. For now the object is very simple but it will grow at the same time as the bundle2 implementation.
author Pierre-Yves David <pierre-yves.david@fb.com>
date Wed, 02 Apr 2014 22:24:44 -0700
parents c33d7bf53812
children 571f2903ff1e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
1 # bundle2.py - generic container format to transmit arbitrary data.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
2 #
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
3 # Copyright 2013 Facebook, Inc.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
4 #
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
5 # This software may be used and distributed according to the terms of the
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
6 # GNU General Public License version 2 or any later version.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
7 """Handling of the new bundle2 format
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
8
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
9 The goal of bundle2 is to act as an atomically packet to transmit a set of
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
10 payloads in an application agnostic way. It consist in a sequence of "parts"
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
11 that will be handed to and processed by the application layer.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
12
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
13
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
14 General format architecture
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
15 ===========================
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
16
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
17 The format is architectured as follow
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
18
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
19 - magic string
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
20 - stream level parameters
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
21 - payload parts (any number)
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
22 - end of stream marker.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
23
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
24 the Binary format
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
25 ============================
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
26
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
27 All numbers are unsigned and big endian.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
28
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
29 stream level parameters
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
30 ------------------------
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
31
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
32 Binary format is as follow
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
33
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
34 :params size: (16 bits integer)
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
35
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
36 The total number of Bytes used by the parameters
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
37
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
38 :params value: arbitrary number of Bytes
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
39
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
40 A blob of `params size` containing the serialized version of all stream level
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
41 parameters.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
42
20809
b93bb639451a bundle2: support for bundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20808
diff changeset
43 The blob contains a space separated list of parameters. parameter with value
20811
9785c3f8f598 bundle2: urlquote stream parameter name and value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20810
diff changeset
44 are stored in the form `<name>=<value>`. Both name and value are urlquoted.
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
45
20813
8c74b3ce5b70 bundle2: refuse empty parameter name
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20812
diff changeset
46 Empty name are obviously forbidden.
8c74b3ce5b70 bundle2: refuse empty parameter name
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20812
diff changeset
47
20844
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
48 Name MUST start with a letter. If this first letter is lower case, the
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
49 parameter is advisory and can be safefly ignored. However when the first
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
50 letter is capital, the parameter is mandatory and the bundling process MUST
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
51 stop if he is not able to proceed it.
20814
8532f5e1b9df bundle2: force the first char of parameter to be an letter.
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20813
diff changeset
52
20808
4c9130c7a29f bundle2: clarify stream parameter design in the documentation
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20805
diff changeset
53 Stream parameters use a simple textual format for two main reasons:
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
54
20808
4c9130c7a29f bundle2: clarify stream parameter design in the documentation
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20805
diff changeset
55 - Stream level parameters should remains simple and we want to discourage any
4c9130c7a29f bundle2: clarify stream parameter design in the documentation
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20805
diff changeset
56 crazy usage.
4c9130c7a29f bundle2: clarify stream parameter design in the documentation
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20805
diff changeset
57 - Textual data allow easy human inspection of a the bundle2 header in case of
4c9130c7a29f bundle2: clarify stream parameter design in the documentation
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20805
diff changeset
58 troubles.
4c9130c7a29f bundle2: clarify stream parameter design in the documentation
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20805
diff changeset
59
4c9130c7a29f bundle2: clarify stream parameter design in the documentation
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20805
diff changeset
60 Any Applicative level options MUST go into a bundle2 part instead.
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
61
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
62 Payload part
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
63 ------------------------
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
64
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
65 Binary format is as follow
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
66
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
67 :header size: (16 bits inter)
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
68
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
69 The total number of Bytes used by the part headers. When the header is empty
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
70 (size = 0) this is interpreted as the end of stream marker.
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
71
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
72 :header:
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
73
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
74 The header defines how to interpret the part. It contains two piece of
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
75 data: the part type, and the part parameters.
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
76
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
77 The part type is used to route an application level handler, that can
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
78 interpret payload.
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
79
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
80 Part parameters are passed to the application level handler. They are
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
81 meant to convey information that will help the application level object to
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
82 interpret the part payload.
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
83
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
84 The binary format of the header is has follow
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
85
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
86 :typesize: (one byte)
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
87
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
88 :typename: alphanumerical part name
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
89
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
90 :parameters:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
91
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
92 Part's parameter may have arbitraty content, the binary structure is::
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
93
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
94 <mandatory-count><advisory-count><param-sizes><param-data>
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
95
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
96 :mandatory-count: 1 byte, number of mandatory parameters
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
97
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
98 :advisory-count: 1 byte, number of advisory parameters
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
99
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
100 :param-sizes:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
101
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
102 N couple of bytes, where N is the total number of parameters. Each
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
103 couple contains (<size-of-key>, <size-of-value) for one parameter.
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
104
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
105 :param-data:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
106
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
107 A blob of bytes from which each parameter key and value can be
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
108 retrieved using the list of size couples stored in the previous
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
109 field.
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
110
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
111 Mandatory parameters comes first, then the advisory ones.
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
112
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
113 :payload:
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
114
20876
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
115 payload is a series of `<chunksize><chunkdata>`.
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
116
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
117 `chunksize` is a 32 bits integer, `chunkdata` are plain bytes (as much as
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
118 `chunksize` says)` The payload part is concluded by a zero size chunk.
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
119
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
120 The current implementation always produces either zero or one chunk.
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
121 This is an implementation limitation that will ultimatly be lifted.
20891
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
122
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
123 Bundle processing
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
124 ============================
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
125
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
126 Each part is processed in order using a "part handler". Handler are registered
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
127 for a certain part type.
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
128
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
129 The matching of a part to its handler is case insensitive. The case of the
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
130 part type is used to know if a part is mandatory or advisory. If the Part type
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
131 contains any uppercase char it is considered mandatory. When no handler is
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
132 known for a Mandatory part, the process is aborted and an exception is raised.
20892
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
133 If the part is advisory and no handler is known, the part is ignored. When the
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
134 process is aborted, the full bundle is still read from the stream to keep the
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
135 channel usable. But none of the part read from an abort are processed. In the
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
136 future, dropping the stream may become an option for channel we do not care to
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
137 preserve.
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
138 """
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
139
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
140 import util
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
141 import struct
20811
9785c3f8f598 bundle2: urlquote stream parameter name and value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20810
diff changeset
142 import urllib
20814
8532f5e1b9df bundle2: force the first char of parameter to be an letter.
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20813
diff changeset
143 import string
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
144
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
145 import changegroup
20803
88db3e615319 bundle2: make sure the unbundler refuse non bundle2 stream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20802
diff changeset
146 from i18n import _
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
147
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
148 _pack = struct.pack
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
149 _unpack = struct.unpack
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
150
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
151 _magicstring = 'HG20'
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
152
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
153 _fstreamparamsize = '>H'
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
154 _fpartheadersize = '>H'
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
155 _fparttypesize = '>B'
20876
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
156 _fpayloadsize = '>I'
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
157 _fpartparamcount = '>BB'
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
158
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
159 def _makefpartparamsizes(nbparams):
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
160 """return a struct format to read part parameter sizes
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
161
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
162 The number parameters is variable so we need to build that format
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
163 dynamically.
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
164 """
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
165 return '>'+('BB'*nbparams)
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
166
20890
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
167 parthandlermapping = {}
20889
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
168
20890
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
169 def parthandler(parttype):
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
170 """decorator that register a function as a bundle2 part handler
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
171
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
172 eg::
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
173
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
174 @parthandler('myparttype')
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
175 def myparttypehandler(...):
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
176 '''process a part of type "my part".'''
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
177 ...
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
178 """
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
179 def _decorator(func):
20891
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
180 lparttype = parttype.lower() # enforce lower case matching.
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
181 assert lparttype not in parthandlermapping
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
182 parthandlermapping[lparttype] = func
20890
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
183 return func
ec7fc110faee bundle2: introduce a `parthandler` decorator
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20889
diff changeset
184 return _decorator
20889
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
185
20948
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
186 class bundleoperation(object):
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
187 """an object that represents a single bundling process
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
188
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
189 Its purpose is to carry unbundle-related objects and states.
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
190
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
191 A new object should be created at the beginning of each bundle processing.
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
192 The object is to be returned by the processing function.
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
193
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
194 The object has very little content now it will ultimately contain:
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
195 * an access to the repo the bundle is applied to,
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
196 * a ui object,
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
197 * a way to retrieve a transaction to add changes to the repo,
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
198 * a way to record the result of processing each part,
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
199 * a way to construct a bundle response when applicable.
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
200 """
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
201
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
202 def __init__(self, repo):
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
203 self.repo = repo
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
204 self.ui = repo.ui
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
205
20947
c33d7bf53812 bundle2: feed a unbundle20 to the `processbundle` function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20892
diff changeset
206 def processbundle(repo, unbundler):
20889
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
207 """This function process a bundle, apply effect to/from a repo
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
208
20947
c33d7bf53812 bundle2: feed a unbundle20 to the `processbundle` function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20892
diff changeset
209 It iterates over each part then searches for and uses the proper handling
c33d7bf53812 bundle2: feed a unbundle20 to the `processbundle` function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20892
diff changeset
210 code to process the part. Parts are processed in order.
20889
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
211
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
212 This is very early version of this function that will be strongly reworked
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
213 before final usage.
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
214
20891
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
215 Unknown Mandatory part will abort the process.
20889
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
216 """
20948
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
217 op = bundleoperation(repo)
20889
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
218 # todo:
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
219 # - replace this is a init function soon.
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
220 # - exception catching
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
221 unbundler.params
20892
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
222 iterparts = iter(unbundler)
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
223 try:
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
224 for part in iterparts:
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
225 parttype = part.type
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
226 # part key are matched lower case
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
227 key = parttype.lower()
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
228 try:
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
229 handler = parthandlermapping[key]
20948
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
230 op.ui.debug('found a handler for part %r\n' % parttype)
20892
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
231 except KeyError:
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
232 if key != parttype: # mandatory parts
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
233 # todo:
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
234 # - use a more precise exception
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
235 raise
20948
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
236 op.ui.debug('ignoring unknown advisory part %r\n' % key)
20891
1c6cd23fc221 bundle2: add some distinction between mandatory and advisory part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20890
diff changeset
237 # todo:
20892
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
238 # - consume the part once we use streaming
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
239 continue
20948
329cd74b52bd bundle2: introduce a bundleoperation object
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20947
diff changeset
240 handler(op, part)
20892
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
241 except Exception:
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
242 for part in iterparts:
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
243 pass # consume the bundle content
6fe95448596d bundle2: read the whole bundle from stream on abort
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20891
diff changeset
244 raise
20889
deed5edb72de bundle2: first version of a bundle processing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20887
diff changeset
245
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
246 class bundle20(object):
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
247 """represent an outgoing bundle2 container
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
248
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
249 Use the `addparam` method to add stream level parameter. and `addpart` to
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
250 populate it. Then call `getchunks` to retrieve all the binary chunks of
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
251 datathat compose the bundle2 container."""
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
252
20842
938718d72624 bundle2: print debug information during bundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20814
diff changeset
253 def __init__(self, ui):
938718d72624 bundle2: print debug information during bundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20814
diff changeset
254 self.ui = ui
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
255 self._params = []
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
256 self._parts = []
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
257
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
258 def addparam(self, name, value=None):
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
259 """add a stream level parameter"""
20813
8c74b3ce5b70 bundle2: refuse empty parameter name
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20812
diff changeset
260 if not name:
8c74b3ce5b70 bundle2: refuse empty parameter name
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20812
diff changeset
261 raise ValueError('empty parameter name')
20814
8532f5e1b9df bundle2: force the first char of parameter to be an letter.
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20813
diff changeset
262 if name[0] not in string.letters:
8532f5e1b9df bundle2: force the first char of parameter to be an letter.
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20813
diff changeset
263 raise ValueError('non letter first character: %r' % name)
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
264 self._params.append((name, value))
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
265
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
266 def addpart(self, part):
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
267 """add a new part to the bundle2 container
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
268
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
269 Parts contains the actuall applicative payload."""
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
270 self._parts.append(part)
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
271
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
272 def getchunks(self):
20842
938718d72624 bundle2: print debug information during bundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20814
diff changeset
273 self.ui.debug('start emission of %s stream\n' % _magicstring)
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
274 yield _magicstring
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
275 param = self._paramchunk()
20842
938718d72624 bundle2: print debug information during bundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20814
diff changeset
276 self.ui.debug('bundle parameter: %s\n' % param)
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
277 yield _pack(_fstreamparamsize, len(param))
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
278 if param:
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
279 yield param
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
280
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
281 self.ui.debug('start of parts\n')
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
282 for part in self._parts:
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
283 self.ui.debug('bundle part: "%s"\n' % part.type)
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
284 for chunk in part.getchunks():
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
285 yield chunk
20842
938718d72624 bundle2: print debug information during bundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20814
diff changeset
286 self.ui.debug('end of bundle\n')
20801
9c5183cb9bca bundle2: very first version of a bundle2 bundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
287 yield '\0\0'
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
288
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
289 def _paramchunk(self):
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
290 """return a encoded version of all stream parameters"""
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
291 blocks = []
20809
b93bb639451a bundle2: support for bundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20808
diff changeset
292 for par, value in self._params:
20811
9785c3f8f598 bundle2: urlquote stream parameter name and value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20810
diff changeset
293 par = urllib.quote(par)
20809
b93bb639451a bundle2: support for bundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20808
diff changeset
294 if value is not None:
20811
9785c3f8f598 bundle2: urlquote stream parameter name and value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20810
diff changeset
295 value = urllib.quote(value)
20809
b93bb639451a bundle2: support for bundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20808
diff changeset
296 par = '%s=%s' % (par, value)
b93bb639451a bundle2: support for bundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20808
diff changeset
297 blocks.append(par)
20804
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
298 return ' '.join(blocks)
db9d3991d2c6 bundle2: support bundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20803
diff changeset
299
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
300 class unbundle20(object):
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
301 """interpret a bundle2 stream
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
302
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
303 (this will eventually yield parts)"""
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
304
20843
0641b41b0b49 bundle2: print debug information during unbundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20842
diff changeset
305 def __init__(self, ui, fp):
0641b41b0b49 bundle2: print debug information during unbundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20842
diff changeset
306 self.ui = ui
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
307 self._fp = fp
20803
88db3e615319 bundle2: make sure the unbundler refuse non bundle2 stream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20802
diff changeset
308 header = self._readexact(4)
88db3e615319 bundle2: make sure the unbundler refuse non bundle2 stream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20802
diff changeset
309 magic, version = header[0:2], header[2:4]
88db3e615319 bundle2: make sure the unbundler refuse non bundle2 stream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20802
diff changeset
310 if magic != 'HG':
88db3e615319 bundle2: make sure the unbundler refuse non bundle2 stream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20802
diff changeset
311 raise util.Abort(_('not a Mercurial bundle'))
88db3e615319 bundle2: make sure the unbundler refuse non bundle2 stream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20802
diff changeset
312 if version != '20':
88db3e615319 bundle2: make sure the unbundler refuse non bundle2 stream
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20802
diff changeset
313 raise util.Abort(_('unknown bundle version %s') % version)
20843
0641b41b0b49 bundle2: print debug information during unbundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20842
diff changeset
314 self.ui.debug('start processing of %s stream\n' % header)
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
315
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
316 def _unpack(self, format):
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
317 """unpack this struct format from the stream"""
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
318 data = self._readexact(struct.calcsize(format))
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
319 return _unpack(format, data)
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
320
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
321 def _readexact(self, size):
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
322 """read exactly <size> bytes from the stream"""
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
323 return changegroup.readexactly(self._fp, size)
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
324
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
325 @util.propertycache
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
326 def params(self):
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
327 """dictionnary of stream level parameters"""
20843
0641b41b0b49 bundle2: print debug information during unbundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20842
diff changeset
328 self.ui.debug('reading bundle2 stream parameters\n')
20805
c5aaeca0cfbf bundle2: support for unbundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20804
diff changeset
329 params = {}
c5aaeca0cfbf bundle2: support for unbundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20804
diff changeset
330 paramssize = self._unpack(_fstreamparamsize)[0]
c5aaeca0cfbf bundle2: support for unbundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20804
diff changeset
331 if paramssize:
c5aaeca0cfbf bundle2: support for unbundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20804
diff changeset
332 for p in self._readexact(paramssize).split(' '):
20810
47293877b54c bundle2: support for unbundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20809
diff changeset
333 p = p.split('=', 1)
20812
e2f908773754 bundle2: urlunquote stream parameter name and value during unbundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20811
diff changeset
334 p = [urllib.unquote(i) for i in p]
20810
47293877b54c bundle2: support for unbundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20809
diff changeset
335 if len(p) < 2:
47293877b54c bundle2: support for unbundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20809
diff changeset
336 p.append(None)
20844
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
337 self._processparam(*p)
20810
47293877b54c bundle2: support for unbundling parameter value
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20809
diff changeset
338 params[p[0]] = p[1]
20805
c5aaeca0cfbf bundle2: support for unbundling simple parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20804
diff changeset
339 return params
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
340
20844
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
341 def _processparam(self, name, value):
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
342 """process a parameter, applying its effect if needed
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
343
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
344 Parameter starting with a lower case letter are advisory and will be
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
345 ignored when unknown. Those starting with an upper case letter are
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
346 mandatory and will this function will raise a KeyError when unknown.
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
347
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
348 Note: no option are currently supported. Any input will be either
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
349 ignored or failing.
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
350 """
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
351 if not name:
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
352 raise ValueError('empty parameter name')
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
353 if name[0] not in string.letters:
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
354 raise ValueError('non letter first character: %r' % name)
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
355 # Some logic will be later added here to try to process the option for
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
356 # a dict of known parameter.
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
357 if name[0].islower():
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
358 self.ui.debug("ignoring unknown parameter %r\n" % name)
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
359 else:
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
360 raise KeyError(name)
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
361
2631204d7305 bundle2: implement the mandatory/advisory logic for parameter
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20843
diff changeset
362
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
363 def __iter__(self):
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
364 """yield all parts contained in the stream"""
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
365 # make sure param have been loaded
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
366 self.params
20843
0641b41b0b49 bundle2: print debug information during unbundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20842
diff changeset
367 self.ui.debug('start extraction of bundle2 parts\n')
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
368 part = self._readpart()
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
369 while part is not None:
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
370 yield part
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
371 part = self._readpart()
20843
0641b41b0b49 bundle2: print debug information during unbundling
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20842
diff changeset
372 self.ui.debug('end of bundle2 stream\n')
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
373
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
374 def _readpart(self):
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
375 """return None when an end of stream markers is reach"""
20864
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
376
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
377 headersize = self._unpack(_fpartheadersize)[0]
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
378 self.ui.debug('part header size: %i\n' % headersize)
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
379 if not headersize:
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
380 return None
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
381 headerblock = self._readexact(headersize)
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
382 # some utility to help reading from the header block
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
383 self._offset = 0 # layer violation to have something easy to understand
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
384 def fromheader(size):
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
385 """return the next <size> byte from the header"""
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
386 offset = self._offset
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
387 data = headerblock[offset:(offset + size)]
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
388 self._offset = offset + size
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
389 return data
20887
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
390 def unpackheader(format):
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
391 """read given format from header
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
392
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
393 This automatically compute the size of the format to read."""
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
394 data = fromheader(struct.calcsize(format))
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
395 return _unpack(format, data)
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
396
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
397 typesize = unpackheader(_fparttypesize)[0]
20864
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
398 parttype = fromheader(typesize)
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
399 self.ui.debug('part type: "%s"\n' % parttype)
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
400 ## reading parameters
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
401 # param count
20887
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
402 mancount, advcount = unpackheader(_fpartparamcount)
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
403 self.ui.debug('part parameters: %i\n' % (mancount + advcount))
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
404 # param size
20887
662b79be093c bundle2: safely read unpack data from part header
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20877
diff changeset
405 paramsizes = unpackheader(_makefpartparamsizes(mancount + advcount))
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
406 # make it a list of couple again
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
407 paramsizes = zip(paramsizes[::2], paramsizes[1::2])
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
408 # split mandatory from advisory
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
409 mansizes = paramsizes[:mancount]
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
410 advsizes = paramsizes[mancount:]
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
411 # retrive param value
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
412 manparams = []
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
413 for key, value in mansizes:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
414 manparams.append((fromheader(key), fromheader(value)))
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
415 advparams = []
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
416 for key, value in advsizes:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
417 advparams.append((fromheader(key), fromheader(value)))
20864
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
418 del self._offset # clean up layer, nobody saw anything.
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
419 ## part payload
20876
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
420 payload = []
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
421 payloadsize = self._unpack(_fpayloadsize)[0]
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
422 self.ui.debug('payload chunk size: %i\n' % payloadsize)
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
423 while payloadsize:
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
424 payload.append(self._readexact(payloadsize))
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
425 payloadsize = self._unpack(_fpayloadsize)[0]
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
426 self.ui.debug('payload chunk size: %i\n' % payloadsize)
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
427 payload = ''.join(payload)
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
428 current = part(parttype, manparams, advparams, data=payload)
20864
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
429 return current
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
430
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
431
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
432 class part(object):
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
433 """A bundle2 part contains application level payload
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
434
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
435 The part `type` is used to route the part to the application level
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
436 handler.
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
437 """
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
438
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
439 def __init__(self, parttype, mandatoryparams=(), advisoryparams=(),
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
440 data=''):
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
441 self.type = parttype
20864
9a75d2559cff bundle2: support unbundling empty part
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20856
diff changeset
442 self.data = data
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
443 self.mandatoryparams = mandatoryparams
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
444 self.advisoryparams = advisoryparams
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
445
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
446 def getchunks(self):
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
447 #### header
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
448 ## parttype
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
449 header = [_pack(_fparttypesize, len(self.type)),
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
450 self.type,
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
451 ]
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
452 ## parameters
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
453 # count
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
454 manpar = self.mandatoryparams
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
455 advpar = self.advisoryparams
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
456 header.append(_pack(_fpartparamcount, len(manpar), len(advpar)))
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
457 # size
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
458 parsizes = []
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
459 for key, value in manpar:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
460 parsizes.append(len(key))
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
461 parsizes.append(len(value))
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
462 for key, value in advpar:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
463 parsizes.append(len(key))
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
464 parsizes.append(len(value))
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
465 paramsizes = _pack(_makefpartparamsizes(len(parsizes) / 2), *parsizes)
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
466 header.append(paramsizes)
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
467 # key, value
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
468 for key, value in manpar:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
469 header.append(key)
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
470 header.append(value)
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
471 for key, value in advpar:
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
472 header.append(key)
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
473 header.append(value)
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
474 ## finalize header
20856
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
475 headerchunk = ''.join(header)
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
476 yield _pack(_fpartheadersize, len(headerchunk))
8a6a86c9a5b5 bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20844
diff changeset
477 yield headerchunk
20877
9e9e3a4e9261 bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20876
diff changeset
478 ## payload
20876
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
479 # we only support fixed size data now.
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
480 # This will be improved in the future.
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
481 if len(self.data):
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
482 yield _pack(_fpayloadsize, len(self.data))
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
483 yield self.data
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
484 # end of payload
ddd56f3eb786 bundle2: support for bundling and unbundling payload
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20864
diff changeset
485 yield _pack(_fpayloadsize, 0)
20802
520df53ad26a bundle2: a very first version of bundle2 unbundler
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 20801
diff changeset
486