Mercurial > hg
annotate hgext/infinitepush/store.py @ 42583:b9bc47211cf5
abort: added support for rebase
This adds support of `rebase` to `hg abort` plan.
An independent abort logic for `rebase` is created
under `abortrebase()` function. For this a seperate
`rebaseruntime` object is created under the function to
handle an unfinished `rebasestate` and abort that using
abort logic under `_prepareabortorcontinue`.
Results of tests are shown.
Differential Revision: https://phab.mercurial-scm.org/D6568
author | Taapas Agrawal <taapas2897@gmail.com> |
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date | Sun, 23 Jun 2019 23:11:35 +0530 |
parents | 090e5f3900b7 |
children | 2372284d9457 |
rev | line source |
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1 # This software may be used and distributed according to the terms of the |
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2 # GNU General Public License version 2 or any later version. |
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3 |
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4 # based on bundleheads extension by Gregory Szorc <gps@mozilla.com> |
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5 |
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6 from __future__ import absolute_import |
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7 |
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8 import abc |
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9 import hashlib |
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10 import os |
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11 import subprocess |
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12 import tempfile |
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13 |
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14 from mercurial import ( |
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15 node, |
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16 pycompat, |
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17 ) |
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18 from mercurial.utils import ( |
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19 procutil, |
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20 ) |
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21 |
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22 NamedTemporaryFile = tempfile.NamedTemporaryFile |
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23 |
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24 class BundleWriteException(Exception): |
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25 pass |
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26 |
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27 class BundleReadException(Exception): |
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28 pass |
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29 |
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30 class abstractbundlestore(object): |
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31 """Defines the interface for bundle stores. |
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32 |
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33 A bundle store is an entity that stores raw bundle data. It is a simple |
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34 key-value store. However, the keys are chosen by the store. The keys can |
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35 be any Python object understood by the corresponding bundle index (see |
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36 ``abstractbundleindex`` below). |
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37 """ |
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38 __metaclass__ = abc.ABCMeta |
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39 |
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40 @abc.abstractmethod |
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41 def write(self, data): |
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42 """Write bundle data to the store. |
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43 |
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44 This function receives the raw data to be written as a str. |
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45 Throws BundleWriteException |
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46 The key of the written data MUST be returned. |
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47 """ |
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48 |
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49 @abc.abstractmethod |
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50 def read(self, key): |
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51 """Obtain bundle data for a key. |
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52 |
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53 Returns None if the bundle isn't known. |
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54 Throws BundleReadException |
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55 The returned object should be a file object supporting read() |
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56 and close(). |
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57 """ |
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58 |
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59 class filebundlestore(object): |
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60 """bundle store in filesystem |
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61 |
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62 meant for storing bundles somewhere on disk and on network filesystems |
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63 """ |
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64 def __init__(self, ui, repo): |
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65 self.ui = ui |
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66 self.repo = repo |
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67 self.storepath = ui.configpath('scratchbranch', 'storepath') |
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68 if not self.storepath: |
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69 self.storepath = self.repo.vfs.join("scratchbranches", |
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70 "filebundlestore") |
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71 if not os.path.exists(self.storepath): |
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72 os.makedirs(self.storepath) |
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73 |
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74 def _dirpath(self, hashvalue): |
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75 """First two bytes of the hash are the name of the upper |
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76 level directory, next two bytes are the name of the |
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77 next level directory""" |
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78 return os.path.join(self.storepath, hashvalue[0:2], hashvalue[2:4]) |
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79 |
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80 def _filepath(self, filename): |
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81 return os.path.join(self._dirpath(filename), filename) |
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82 |
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83 def write(self, data): |
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84 filename = node.hex(hashlib.sha1(data).digest()) |
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85 dirpath = self._dirpath(filename) |
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86 |
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87 if not os.path.exists(dirpath): |
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88 os.makedirs(dirpath) |
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89 |
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90 with open(self._filepath(filename), 'wb') as f: |
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91 f.write(data) |
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92 |
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93 return filename |
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94 |
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95 def read(self, key): |
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96 try: |
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97 with open(self._filepath(key), 'rb') as f: |
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98 return f.read() |
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99 except IOError: |
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100 return None |
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101 |
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102 class externalbundlestore(abstractbundlestore): |
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103 def __init__(self, put_binary, put_args, get_binary, get_args): |
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104 """ |
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105 `put_binary` - path to binary file which uploads bundle to external |
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106 storage and prints key to stdout |
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107 `put_args` - format string with additional args to `put_binary` |
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108 {filename} replacement field can be used. |
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109 `get_binary` - path to binary file which accepts filename and key |
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110 (in that order), downloads bundle from store and saves it to file |
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111 `get_args` - format string with additional args to `get_binary`. |
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112 {filename} and {handle} replacement field can be used. |
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113 """ |
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114 |
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115 self.put_args = put_args |
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116 self.get_args = get_args |
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117 self.put_binary = put_binary |
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118 self.get_binary = get_binary |
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119 |
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120 def _call_binary(self, args): |
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121 p = subprocess.Popen( |
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122 pycompat.rapply(procutil.tonativestr, args), |
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123 stdout=subprocess.PIPE, stderr=subprocess.PIPE, |
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124 close_fds=True) |
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125 stdout, stderr = p.communicate() |
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126 returncode = p.returncode |
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127 return returncode, stdout, stderr |
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128 |
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129 def write(self, data): |
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130 # Won't work on windows because you can't open file second time without |
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131 # closing it |
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132 # TODO: rewrite without str.format() and replace NamedTemporaryFile() |
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133 # with pycompat.namedtempfile() |
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134 with NamedTemporaryFile() as temp: |
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135 temp.write(data) |
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136 temp.flush() |
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137 temp.seek(0) |
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138 formatted_args = [arg.format(filename=temp.name) |
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139 for arg in self.put_args] |
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140 returncode, stdout, stderr = self._call_binary( |
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141 [self.put_binary] + formatted_args) |
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142 |
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143 if returncode != 0: |
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144 raise BundleWriteException( |
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145 'Failed to upload to external store: %s' % stderr) |
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146 stdout_lines = stdout.splitlines() |
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147 if len(stdout_lines) == 1: |
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148 return stdout_lines[0] |
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149 else: |
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150 raise BundleWriteException( |
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151 'Bad output from %s: %s' % (self.put_binary, stdout)) |
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152 |
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153 def read(self, handle): |
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154 # Won't work on windows because you can't open file second time without |
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155 # closing it |
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156 # TODO: rewrite without str.format() and replace NamedTemporaryFile() |
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157 # with pycompat.namedtempfile() |
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158 with NamedTemporaryFile() as temp: |
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159 formatted_args = [arg.format(filename=temp.name, handle=handle) |
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160 for arg in self.get_args] |
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161 returncode, stdout, stderr = self._call_binary( |
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162 [self.get_binary] + formatted_args) |
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163 |
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164 if returncode != 0: |
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165 raise BundleReadException( |
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166 'Failed to download from external store: %s' % stderr) |
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167 return temp.read() |