1Dancer::Development::InUtseegrraCtoinotnr(i3b)uted PerlDDaonccuemre:n:tDaetvieolnopment::Integration(3)
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6 Dancer::Development::Integration - guide for Dancer's core-team members
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9 version 1.3513
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12 This documentation describes the procedure used for integrators to
13 review and merge contributions sent via pull-requests.
14 Every core-team member should read and apply the procedures described
16 here. This will allow for a better history and more consistency in our
17 ways of handling the (increasing number!) of pull requests.
18
20 We will first define the most important terms used in this
21 documentation:
22 • PR
24 Acronym for Pull Request
26 • Contributor
28 A GitHub user who had forked and cloned the official Dancer's repo,
30 and who has sent a PR.
31 • Integration branch
33 This branch is the branch used to merge all contributions. This is
35 a git-flow convention. In Dancer, our integration branch is
36 "devel".
37 As explained in Dancer::Development, every PR should be based on
39 the integration branch. If not, this is enough to refuse the PR (it
40 makes the life of the integrator much harder if this is not the
41 case).
42 • Integrator
44 A member of Dancer's core-team who is responsible for reviewing and
46 either rejecting the PR, or merging it into the integration branch.
47
49 Processing a Pull Request
50 This procedure describes how an integrator should process a PR.
51 Let's say the user $user has sent a PR, he has followed the
53 instructions described in Dancer::Development so his work is based on
54 the integration branch ("devel").
55 All the procedure described here is designed to avoid unnecessary
57 recursive-merge, in order to keep a clean and flat history in the
58 integration branch.
59 Of course, we could just pull from $user into our "devel" branch, but
61 this would shift the history because of recursive merge, most of the
62 time.
63 To avoid that, we're going to pull the commits of $user into a
65 temporary branch, and then cherry-pick the commits we want.
66 In order to have a clean history, like the one we got with git-flow
68 when working on a feature, we're going to do that in a topic branch,
69 named "review/$user". Then, this branch will be merged into "devel" and
70 we will just have to drop it.
71 First, we make sure we are in sync with "origin/devel"
73 git checkout devel
75 git pull origin devel
76 Then, from that branch we create a temp sandbox
78 git checkout -b temp
80 We pull here from $user
82 git pull <user repo> <pr/branch>
84 Here, either the pull was run as a fast-forward or as a recursive
86 merge. If we have a FF, we can forget about the temp branch and do the
87 pull directly in "devel". If not, we'll have to cherry-pick the commits
88 by hand.
89 From devel, we first create the final "review" branch:
91 git checkout devel
93 git checkout -b review/$user
94 Then we cherry-pick all the commits we want. To know them, we just have
96 to go into temp and inspect the history (with "git log").
97 When we have the list of commits we want:
99 for commit in C1 C2 C3 ... CN
101 do
102 git cherry-pick $commit
103 done
104 (Another option is to use "git rebase -i" to manually select the list
106 of commits to cherry-pick/rebase.)
107 Then we can review the code, do whatever we want, maybe add some
109 commits to change something.
110 When we're happy with the change set, we can merge into devel:
112 git checkout devel
114 git merge --no-ff review/$user
115 Note the "--no-ff" switch is used to make sure we'll see a nice commit
117 named "Merge branch 'review/$user' into devel". This is on purpose and
118 mimic the behaviour of git-flow.
119 Your local "devel" branch is now merged, and can be pushed to the
121 remote.
122 $ git push origin devel
124
126 We have one main release cycle. This is the release cycle based on the
127 devel branch. We use this branch to build new releases, with new stuff
128 all the new shiny commits we want.
129 Those release are built with git-flow (with "git-flow release") and are
131 then uploaded to CPAN.
132 Since Dancer 1.2, we also have another parallel release cycle which is
134 what we call the frozen branch. It's a maintenance-only release cycle.
135 That branch is created from the tag of the first release of a stable
136 version (namely a release series with an even minor number).
137 This branch must be used only for bug-fixing the stable releases.
139 Nothing new should occur in that branch.
140 Let's take an example with Dancer 1.2003 and Dancer 1.3002.
142 • Dancer 1.2003 is the last stable release of Dancer. Its codebase is
144 handled in the frozen branch, that has been created from the tag
145 1.2000.
146 • Dancer 1.3002 is the last release of Dancer. As it belongs to a
148 development series, it can provide new features, code refactoring
149 and deprecations. Its codebase is handled by the integration
150 branch, "devel".
151 • When a bug is found in 1.2xxx, it's fixed in the "frozen" branch,
153 and a new release is built from here and then uploaded to CPAN.
154 • Whenever the team wants to, they can release new versions of 1.3xxx
156 from the devel branch, using "git-flow release start".
157 • When the team finds that the current state of devel (namely, the
159 last version of 1.3xxx) is stable and mature enough. They can
160 decide it will be the new stable version.
161 Then, a release 1.4000_01 is built from devel, an upload is done to
163 CPAN, and when ready, the 1.40001 can be uploaded the same way.
164 From that moment, the master branch is merged into frozen in order
166 to be able to hotfix the frozen branch in the future.
167 It's now possible for the team to continue working on new stuff in
169 devel, bumping the version number to 1.5000_01
170
172 This documentation has been written by Alexis Sukrieh
173 "<sukria@sukria.net>".
174
176 Dancer Core Developers
177
179 This software is copyright (c) 2010 by Alexis Sukrieh.
180 This is free software; you can redistribute it and/or modify it under
182 the same terms as the Perl 5 programming language system itself.
183perl v5.34.0 2022-01-21Dancer::Development::Integration(3)