| author | Sandu Turcan <idlsoft@gmail.com> |
| Tue, 03 May 2022 21:44:30 -0400 | |
| branch | stable |
| changeset 49241 | 6b10151b9621 |
| parent 44621 | c5653cf2811d |
| permissions | -rw-r--r-- |
|
44477
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
1 |
Octopus Merge Support |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
2 |
===================== |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
3 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
4 |
This will be moderately complicated, as we'll need to synthesize phony |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
5 |
changeset entries to explode the octopus into "revisions" that only |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
6 |
have two parents each. For today, we can probably just do something like |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
7 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
8 |
aaaaaaaaaaaaaaaaaaXX{20 bytes of exploded node's hex sha} |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
9 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
10 |
where XX is a counter (so we could have as many as 255 parents in a |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
11 |
git commit - more than I think we'd ever see.) That means that we can |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
12 |
install some check in this extension to disallow checking out or |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
13 |
otherwise interacting with the `aaaaaaaaaaaaaaaaaa` revisions. |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
14 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
15 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
16 |
Interface Creation |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
17 |
==================== |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
18 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
19 |
We at least need an interface definition for `changelog` in core that |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
20 |
this extension can satisfy, and again for `basicstore`. |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
21 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
22 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
23 |
Reason About Locking |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
24 |
==================== |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
25 |
|
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
26 |
We should spend some time thinking hard about locking, especially on |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
27 |
.git/index etc. We're probably adequately locking the _git_ |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
28 |
repository, but may not have enough locking correctness in places |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
29 |
where hg does locking that git isn't aware of (notably the working |
|
ad718271a9eb
git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
30 |
copy, which I believe Git does not lock.) |