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annotate hgext/git/index.py @ 44496:ec54b3d2af0b

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git: don't fail import when pygit2 is not install `test-duplicateoptions.py` was failing on py2 for be because I didn't have pygit2 installed. It failed because we depend on pygit2 at import time. This patch makes it so we successfully load the git extension even if pygit2 doesn't exist -- we just won't be able to use it in that case. Differential Revision: https://phab.mercurial-scm.org/D8268
author Martin von Zweigbergk <martinvonz@google.com>
date Mon, 09 Mar 2020 11:18:33 -0700
parents ad718271a9eb
children fb2936c5f6dc
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1 from __future__ import absolute_import
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2
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3 import collections
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4 import os
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5 import sqlite3
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6
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7 from mercurial.i18n import _
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8
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9 from mercurial import (
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10 encoding,
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11 error,
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12 node as nodemod,
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13 pycompat,
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14 )
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15
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16 from . import gitutil
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18
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19 pygit2 = gitutil.get_pygit2()
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20
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21 _CURRENT_SCHEMA_VERSION = 1
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22 _SCHEMA = (
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23 """
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24 CREATE TABLE refs (
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25 -- node and name are unique together. There may be more than one name for
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26 -- a given node, and there may be no name at all for a given node (in the
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27 -- case of an anonymous hg head).
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28 node TEXT NOT NULL,
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29 name TEXT
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30 );
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31
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32 -- The "possible heads" of the repository, which we use to figure out
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33 -- if we need to re-walk the changelog.
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34 CREATE TABLE possible_heads (
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35 node TEXT NOT NULL
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36 );
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37
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38 -- The topological heads of the changelog, which hg depends on.
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39 CREATE TABLE heads (
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40 node TEXT NOT NULL
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41 );
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42
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43 -- A total ordering of the changelog
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44 CREATE TABLE changelog (
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45 rev INTEGER NOT NULL PRIMARY KEY,
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46 node TEXT NOT NULL,
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47 p1 TEXT,
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48 p2 TEXT
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49 );
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50
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51 CREATE UNIQUE INDEX changelog_node_idx ON changelog(node);
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52 CREATE UNIQUE INDEX changelog_node_rev_idx ON changelog(rev, node);
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53
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54 -- Changed files for each commit, which lets us dynamically build
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55 -- filelogs.
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56 CREATE TABLE changedfiles (
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57 node TEXT NOT NULL,
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58 filename TEXT NOT NULL,
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59 -- 40 zeroes for deletions
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60 filenode TEXT NOT NULL,
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61 -- to handle filelog parentage:
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62 p1node TEXT,
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63 p1filenode TEXT,
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64 p2node TEXT,
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65 p2filenode TEXT
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66 );
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67
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68 CREATE INDEX changedfiles_nodes_idx
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69 ON changedfiles(node);
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70
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71 PRAGMA user_version=%d
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72 """
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73 % _CURRENT_SCHEMA_VERSION
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74 )
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75
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76
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77 def _createdb(path):
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78 # print('open db', path)
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79 # import traceback
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80 # traceback.print_stack()
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81 db = sqlite3.connect(encoding.strfromlocal(path))
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82 db.text_factory = bytes
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83
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84 res = db.execute('PRAGMA user_version').fetchone()[0]
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85
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86 # New database.
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87 if res == 0:
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88 for statement in _SCHEMA.split(';'):
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89 db.execute(statement.strip())
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90
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91 db.commit()
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92
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93 elif res == _CURRENT_SCHEMA_VERSION:
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94 pass
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95
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96 else:
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97 raise error.Abort(_(b'sqlite database has unrecognized version'))
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98
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99 db.execute('PRAGMA journal_mode=WAL')
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100
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101 return db
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102
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103
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104 _OUR_ORDER = ()
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105 if pygit2:
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106 _OUR_ORDER = (
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107 pygit2.GIT_SORT_TOPOLOGICAL
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108 | pygit2.GIT_SORT_TIME
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109 | pygit2.GIT_SORT_REVERSE
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110 )
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111
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112 _DIFF_FLAGS = 1 << 21 # GIT_DIFF_FORCE_BINARY, which isn't exposed by pygit2
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114
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115 def _find_nearest_ancestor_introducing_node(
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116 db, gitrepo, file_path, walk_start, filenode
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117 ):
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118 """Find the nearest ancestor that introduces a file node.
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119
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120 Args:
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121 db: a handle to our sqlite database.
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122 gitrepo: A pygit2.Repository instance.
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123 file_path: the path of a file in the repo
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124 walk_start: a pygit2.Oid that is a commit where we should start walking
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125 for our nearest ancestor.
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126
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127 Returns:
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128 A hexlified SHA that is the commit ID of the next-nearest parent.
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129 """
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130 assert isinstance(file_path, str), 'file_path must be str, got %r' % type(
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131 file_path
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132 )
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133 assert isinstance(filenode, str), 'filenode must be str, got %r' % type(
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134 filenode
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135 )
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136 parent_options = {
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137 row[0].decode('ascii')
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138 for row in db.execute(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
139 'SELECT node FROM changedfiles '
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
140 'WHERE filename = ? AND filenode = ?',
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
141 (file_path, filenode),
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
142 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
143 }
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
144 inner_walker = gitrepo.walk(walk_start, _OUR_ORDER)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
145 for w in inner_walker:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
146 if w.id.hex in parent_options:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
147 return w.id.hex
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
148 raise error.ProgrammingError(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
149 'Unable to find introducing commit for %s node %s from %s',
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
150 (file_path, filenode, walk_start),
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
151 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
152
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
153
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
154 def fill_in_filelog(gitrepo, db, startcommit, path, startfilenode):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
155 """Given a starting commit and path, fill in a filelog's parent pointers.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
156
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
157 Args:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
158 gitrepo: a pygit2.Repository
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
159 db: a handle to our sqlite database
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
160 startcommit: a hexlified node id for the commit to start at
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
161 path: the path of the file whose parent pointers we should fill in.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
162 filenode: the hexlified node id of the file at startcommit
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
163
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
164 TODO: make filenode optional
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
165 """
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
166 assert isinstance(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
167 startcommit, str
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
168 ), 'startcommit must be str, got %r' % type(startcommit)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
169 assert isinstance(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
170 startfilenode, str
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
171 ), 'startfilenode must be str, got %r' % type(startfilenode)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
172 visit = collections.deque([(startcommit, startfilenode)])
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
173 while visit:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
174 cnode, filenode = visit.popleft()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
175 commit = gitrepo[cnode]
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
176 parents = []
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
177 for parent in commit.parents:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
178 t = parent.tree
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
179 for comp in path.split('/'):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
180 try:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
181 t = gitrepo[t[comp].id]
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
182 except KeyError:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
183 break
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
184 else:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
185 introducer = _find_nearest_ancestor_introducing_node(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
186 db, gitrepo, path, parent.id, t.id.hex
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
187 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
188 parents.append((introducer, t.id.hex))
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
189 p1node = p1fnode = p2node = p2fnode = gitutil.nullgit
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
190 for par, parfnode in parents:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
191 found = int(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
192 db.execute(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
193 'SELECT COUNT(*) FROM changedfiles WHERE '
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
194 'node = ? AND filename = ? AND filenode = ? AND '
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
195 'p1node NOT NULL',
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
196 (par, path, parfnode),
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
197 ).fetchone()[0]
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
198 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
199 if found == 0:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
200 assert par is not None
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
201 visit.append((par, parfnode))
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
202 if parents:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
203 p1node, p1fnode = parents[0]
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
204 if len(parents) == 2:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
205 p2node, p2fnode = parents[1]
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
206 if len(parents) > 2:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
207 raise error.ProgrammingError(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
208 b"git support can't handle octopus merges"
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
209 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
210 db.execute(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
211 'UPDATE changedfiles SET '
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
212 'p1node = ?, p1filenode = ?, p2node = ?, p2filenode = ? '
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
213 'WHERE node = ? AND filename = ? AND filenode = ?',
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
214 (p1node, p1fnode, p2node, p2fnode, commit.id.hex, path, filenode),
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
215 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
216 db.commit()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
217
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
218
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
219 def _index_repo(gitrepo, db, progress_factory=lambda *args, **kwargs: None):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
220 # Identify all references so we can tell the walker to visit all of them.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
221 all_refs = gitrepo.listall_references()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
222 possible_heads = set()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
223 prog = progress_factory(b'refs')
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
224 for pos, ref in enumerate(all_refs):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
225 if prog is not None:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
226 prog.update(pos)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
227 if not (
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
228 ref.startswith('refs/heads/') # local branch
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
229 or ref.startswith('refs/tags/') # tag
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
230 or ref.startswith('refs/remotes/') # remote branch
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
231 or ref.startswith('refs/hg/') # from this extension
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
232 ):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
233 continue
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
234 try:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
235 start = gitrepo.lookup_reference(ref).peel(pygit2.GIT_OBJ_COMMIT)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
236 except ValueError:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
237 # No commit to be found, so we don't care for hg's purposes.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
238 continue
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
239 possible_heads.add(start.id)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
240 # Optimization: if the list of heads hasn't changed, don't
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
241 # reindex, the changelog. This doesn't matter on small
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
242 # repositories, but on even moderately deep histories (eg cpython)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
243 # this is a very important performance win.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
244 #
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
245 # TODO: we should figure out how to incrementally index history
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
246 # (preferably by detecting rewinds!) so that we don't have to do a
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
247 # full changelog walk every time a new commit is created.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
248 cache_heads = {x[0] for x in db.execute('SELECT node FROM possible_heads')}
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
249 walker = None
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
250 cur_cache_heads = {h.hex for h in possible_heads}
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
251 if cur_cache_heads == cache_heads:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
252 return
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
253 for start in possible_heads:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
254 if walker is None:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
255 walker = gitrepo.walk(start, _OUR_ORDER)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
256 else:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
257 walker.push(start)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
258
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
259 # Empty out the existing changelog. Even for large-ish histories
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
260 # we can do the top-level "walk all the commits" dance very
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
261 # quickly as long as we don't need to figure out the changed files
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
262 # list.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
263 db.execute('DELETE FROM changelog')
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
264 if prog is not None:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
265 prog.complete()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
266 prog = progress_factory(b'commits')
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
267 # This walker is sure to visit all the revisions in history, but
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
268 # only once.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
269 for pos, commit in enumerate(walker):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
270 if prog is not None:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
271 prog.update(pos)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
272 p1 = p2 = nodemod.nullhex
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
273 if len(commit.parents) > 2:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
274 raise error.ProgrammingError(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
275 (
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
276 b"git support can't handle octopus merges, "
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
277 b"found a commit with %d parents :("
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
278 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
279 % len(commit.parents)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
280 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
281 if commit.parents:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
282 p1 = commit.parents[0].id.hex
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
283 if len(commit.parents) == 2:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
284 p2 = commit.parents[1].id.hex
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
285 db.execute(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
286 'INSERT INTO changelog (rev, node, p1, p2) VALUES(?, ?, ?, ?)',
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
287 (pos, commit.id.hex, p1, p2),
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
288 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
289
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
290 num_changedfiles = db.execute(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
291 "SELECT COUNT(*) from changedfiles WHERE node = ?",
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
292 (commit.id.hex,),
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
293 ).fetchone()[0]
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
294 if not num_changedfiles:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
295 files = {}
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
296 # I *think* we only need to check p1 for changed files
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
297 # (and therefore linkrevs), because any node that would
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
298 # actually have this commit as a linkrev would be
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
299 # completely new in this rev.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
300 p1 = commit.parents[0].id.hex if commit.parents else None
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
301 if p1 is not None:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
302 patchgen = gitrepo.diff(p1, commit.id.hex, flags=_DIFF_FLAGS)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
303 else:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
304 patchgen = commit.tree.diff_to_tree(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
305 swap=True, flags=_DIFF_FLAGS
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
306 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
307 new_files = (p.delta.new_file for p in patchgen)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
308 files = {
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
309 nf.path: nf.id.hex
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
310 for nf in new_files
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
311 if nf.id.raw != nodemod.nullid
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
312 }
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
313 for p, n in files.items():
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
314 # We intentionally set NULLs for any file parentage
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
315 # information so it'll get demand-computed later. We
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
316 # used to do it right here, and it was _very_ slow.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
317 db.execute(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
318 'INSERT INTO changedfiles ('
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
319 'node, filename, filenode, p1node, p1filenode, p2node, '
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
320 'p2filenode) VALUES(?, ?, ?, ?, ?, ?, ?)',
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
321 (commit.id.hex, p, n, None, None, None, None),
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
322 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
323 db.execute('DELETE FROM heads')
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
324 db.execute('DELETE FROM possible_heads')
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
325 for hid in possible_heads:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
326 h = hid.hex
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
327 db.execute('INSERT INTO possible_heads (node) VALUES(?)', (h,))
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
328 haschild = db.execute(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
329 'SELECT COUNT(*) FROM changelog WHERE p1 = ? OR p2 = ?', (h, h)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
330 ).fetchone()[0]
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
331 if not haschild:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
332 db.execute('INSERT INTO heads (node) VALUES(?)', (h,))
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
333
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
334 db.commit()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
335 if prog is not None:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
336 prog.complete()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
337
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
338
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
339 def get_index(gitrepo, progress_factory=lambda *args, **kwargs: None):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
340 cachepath = os.path.join(
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
341 pycompat.fsencode(gitrepo.path), b'..', b'.hg', b'cache'
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
342 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
343 if not os.path.exists(cachepath):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
344 os.makedirs(cachepath)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
345 dbpath = os.path.join(cachepath, b'git-commits.sqlite')
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
346 db = _createdb(dbpath)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
347 # TODO check against gitrepo heads before doing a full index
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
348 # TODO thread a ui.progress call into this layer
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
349 _index_repo(gitrepo, db, progress_factory)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
350 return db