=============================

Test distributed obsolescence

=============================

This file test various cases where data (changeset, phase, obsmarkers) is

added to the repository in a specific order. Usually, this order is unlikely

to happen in the local case but can easily happen in the distributed case.

  $ unset HGUSER

  $ unset EMAIL

  $ . $TESTDIR/testlib/obsmarker-common.sh

  $ cat >> $HGRCPATH << EOF

  > [extensions]

  > rebase =

  > [experimental]

  > evolution = all

  > [phases]

  > publish = False

  > [command-templates]

  > log = {rev}:{node|short} {desc}{if(obsfate, " [{join(obsfate, "; ")}]")}\n

  > EOF

Check distributed chain building

================================

Test case where a changeset is marked as a successor of another local

changeset while the successor has already been obsoleted remotely.

The chain of evolution should seamlessly connect and all but the new version

(created remotely) should be seen as obsolete.

Initial setup

  $ mkdir distributed-chain-building

  $ cd distributed-chain-building

  $ hg init server

  $ cd server

  $ cat << EOF >> .hg/hgrc

  > [ui]

  > username = server

  > EOF

  $ mkcommit ROOT

  $ mkcommit c_A0

  $ hg up 'desc("ROOT")'

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ mkcommit c_A1

  created new head

  $ hg up 'desc("ROOT")'

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ mkcommit c_B0

  created new head

  $ hg debugobsolete `getid 'desc("c_A0")'` `getid 'desc("c_A1")'`

  1 new obsolescence markers

  obsoleted 1 changesets

  $ hg log -G --hidden -v

  @  3:e5d7dda7cd28 c_B0

  |

  | o  2:7f6b0a6f5c25 c_A1

  |/

  | x  1:e1b46f0f979f c_A0 [rewritten as 2:7f6b0a6f5c25 by server (at 1970-01-01 00:00 +0000)]

  |/

  o  0:e82fb8d02bbf ROOT

  $ hg debugobsolete

  e1b46f0f979f52748347ff8729c59f2ef56e6fe2 7f6b0a6f5c25345a83870963efd827c1798a5959 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'server'}

  $ cd ..

duplicate the repo for the client:

  $ cp -R server client

  $ cat << EOF >> client/.hg/hgrc

  > [paths]

  > default = ../server/

  > [ui]

  > username = client

  > EOF

server side: create new revision on the server (obsoleting another one)

  $ cd server

  $ hg up 'desc("ROOT")'

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ mkcommit c_B1

  created new head

  $ hg debugobsolete `getid 'desc("c_B0")'` `getid 'desc("c_B1")'`

  1 new obsolescence markers

  obsoleted 1 changesets

  $ hg log -G

  @  4:391a2bf12b1b c_B1

  |

  | o  2:7f6b0a6f5c25 c_A1

  |/

  o  0:e82fb8d02bbf ROOT

  $ hg log -G --hidden -v

  @  4:391a2bf12b1b c_B1

  |

  | x  3:e5d7dda7cd28 c_B0 [rewritten as 4:391a2bf12b1b by server (at 1970-01-01 00:00 +0000)]

  |/

  | o  2:7f6b0a6f5c25 c_A1

  |/

  | x  1:e1b46f0f979f c_A0 [rewritten as 2:7f6b0a6f5c25 by server (at 1970-01-01 00:00 +0000)]

  |/

  o  0:e82fb8d02bbf ROOT

  $ hg debugobsolete

  e1b46f0f979f52748347ff8729c59f2ef56e6fe2 7f6b0a6f5c25345a83870963efd827c1798a5959 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'server'}

  e5d7dda7cd28e6b3f79437e5b8122a38ece0255c 391a2bf12b1b8b05a72400ae36b26d50a091dc22 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'server'}

  $ cd ..

client side: create a marker between two common changesets

(client is not aware of the server activity yet)

  $ cd client

  $ hg debugobsolete `getid 'desc("c_A1")'` `getid 'desc("c_B0")'`

  1 new obsolescence markers

  obsoleted 1 changesets

  $ hg log -G

  @  3:e5d7dda7cd28 c_B0

  |

  o  0:e82fb8d02bbf ROOT

  $ hg log -G --hidden -v

  @  3:e5d7dda7cd28 c_B0

  |

  | x  2:7f6b0a6f5c25 c_A1 [rewritten as 3:e5d7dda7cd28 by client (at 1970-01-01 00:00 +0000)]

  |/

  | x  1:e1b46f0f979f c_A0 [rewritten as 2:7f6b0a6f5c25 by server (at 1970-01-01 00:00 +0000)]

  |/

  o  0:e82fb8d02bbf ROOT

  $ hg debugobsolete

  e1b46f0f979f52748347ff8729c59f2ef56e6fe2 7f6b0a6f5c25345a83870963efd827c1798a5959 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'server'}

  7f6b0a6f5c25345a83870963efd827c1798a5959 e5d7dda7cd28e6b3f79437e5b8122a38ece0255c 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'client'}

client side: pull from the server

(the new successors should take over)

  $ hg up 'desc("ROOT")'

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg pull --debug --confirm --config ui.interactive=True << EOF

  > n

  > EOF

  pulling from $TESTTMP/distributed-chain-building/server

  query 1; heads

  searching for changes

  taking quick initial sample

  query 2; still undecided: 1, sample size is: 1

  2 total queries in *.*s (glob)

  1 changesets found

  list of changesets:

  391a2bf12b1b8b05a72400ae36b26d50a091dc22

  listing keys for "bookmarks"

  bundle2-output-bundle: "HG20", 4 parts total

  bundle2-output-part: "changegroup" (params: 1 mandatory 1 advisory) streamed payload

  bundle2-output-part: "listkeys" (params: 1 mandatory) empty payload

  bundle2-output-part: "obsmarkers" streamed payload

  bundle2-output-part: "phase-heads" 48 bytes payload

  bundle2-input-bundle: with-transaction

  bundle2-input-part: "changegroup" (params: 1 mandatory 1 advisory) supported

  adding changesets

  add changeset 391a2bf12b1b

  adding manifests

  adding file changes

  adding c_B1 revisions

  bundle2-input-part: total payload size 485

  bundle2-input-part: "listkeys" (params: 1 mandatory) supported

  bundle2-input-part: "obsmarkers" supported

  bundle2-input-part: total payload size 143

  bundle2-input-part: "phase-heads" supported

  bundle2-input-part: total payload size 48

  bundle2-input-bundle: 4 parts total

  checking for updated bookmarks

  adding 1 changesets with 1 changes to 1 files (+1 heads)

  1 new obsolescence markers

  obsoleting 1 changesets

  new changesets 391a2bf12b1b (1 drafts)

  accept incoming changes (yn)? n

  transaction abort!

  rollback completed

  abort: user aborted

  [255]

  $ hg pull --confirm --config ui.interactive=True << EOF

  > y

  > EOF

  pulling from $TESTTMP/distributed-chain-building/server

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  adding 1 changesets with 1 changes to 1 files (+1 heads)

  1 new obsolescence markers

  obsoleting 1 changesets

  new changesets 391a2bf12b1b (1 drafts)

  accept incoming changes (yn)? y

  added 1 changesets with 1 changes to 1 files (+1 heads)

  1 new obsolescence markers

  obsoleted 1 changesets

  new changesets 391a2bf12b1b (1 drafts)

  (run 'hg heads' to see heads)

  $ hg log -G

  o  4:391a2bf12b1b c_B1

  |

  @  0:e82fb8d02bbf ROOT

  $ hg log -G --hidden -v

  o  4:391a2bf12b1b c_B1

  |

  | x  3:e5d7dda7cd28 c_B0 [rewritten as 4:391a2bf12b1b by server (at 1970-01-01 00:00 +0000)]

  |/

  | x  2:7f6b0a6f5c25 c_A1 [rewritten as 3:e5d7dda7cd28 by client (at 1970-01-01 00:00 +0000)]

  |/

  | x  1:e1b46f0f979f c_A0 [rewritten as 2:7f6b0a6f5c25 by server (at 1970-01-01 00:00 +0000)]

  |/

  @  0:e82fb8d02bbf ROOT

  $ hg debugobsolete

  e1b46f0f979f52748347ff8729c59f2ef56e6fe2 7f6b0a6f5c25345a83870963efd827c1798a5959 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'server'}

  7f6b0a6f5c25345a83870963efd827c1798a5959 e5d7dda7cd28e6b3f79437e5b8122a38ece0255c 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'client'}

  e5d7dda7cd28e6b3f79437e5b8122a38ece0255c 391a2bf12b1b8b05a72400ae36b26d50a091dc22 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'server'}

server side: receive client push

(the other way around, pushing to the server, the obsolete changesets stay

obsolete on the server side but the marker is sent out.)

  $ hg rollback

  repository tip rolled back to revision 3 (undo pull)

  $ hg push -f

  pushing to $TESTTMP/distributed-chain-building/server

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 0 changesets with 0 changes to 1 files

  1 new obsolescence markers

  obsoleted 1 changesets

  $ hg -R ../server/ log -G

  @  4:391a2bf12b1b c_B1

  |

  o  0:e82fb8d02bbf ROOT

  $ hg -R ../server/ log -G --hidden -v

  @  4:391a2bf12b1b c_B1

  |

  | x  3:e5d7dda7cd28 c_B0 [rewritten as 4:391a2bf12b1b by server (at 1970-01-01 00:00 +0000)]

  |/

  | x  2:7f6b0a6f5c25 c_A1 [rewritten as 3:e5d7dda7cd28 by client (at 1970-01-01 00:00 +0000)]

  |/

  | x  1:e1b46f0f979f c_A0 [rewritten as 2:7f6b0a6f5c25 by server (at 1970-01-01 00:00 +0000)]

  |/

  o  0:e82fb8d02bbf ROOT

  $ hg debugobsolete

  e1b46f0f979f52748347ff8729c59f2ef56e6fe2 7f6b0a6f5c25345a83870963efd827c1798a5959 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'server'}

  7f6b0a6f5c25345a83870963efd827c1798a5959 e5d7dda7cd28e6b3f79437e5b8122a38ece0255c 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'client'}

  $ cd ..

Check getting changesets after getting the markers

=================================================

This test case covers the scenario where commits are received -after- we

received some obsolescence markers turning them obsolete.

For example, we pull some successors from a repository (with associated

predecessors marker chain) and then later we pull some intermediate

precedessors changeset from another repository. Obsolescence markers must

apply to the intermediate changeset. They have to be obsolete (and hidden).

Avoiding pulling the changeset in the first place is a tricky decision because

there could be non-obsolete ancestors that need to be pulled, but the

discovery cannot currently find these (this is not the case in this tests). In

addition, we could also have to pull the changeset because they have children.

In this case, they would not be hidden (yet) because of the orphan descendant,

but they would still have to be obsolete. (This is not tested in this case

either).

  $ mkdir distributed-chain-building

  $ cd distributed-chain-building

  $ hg init server

  $ cd server

  $ cat << EOF >> .hg/hgrc

  > [ui]

  > username = server

  > EOF

  $ mkcommit ROOT

  $ cd ..

  $ hg clone server repo-Alice

  updating to branch default

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cat << EOF >> repo-Alice/.hg/hgrc

  > [ui]

  > username = alice

  > EOF

  $ hg clone server repo-Bob

  updating to branch default

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cat << EOF >> repo-Bob/.hg/hgrc

  > [ui]

  > username = bob

  > EOF

  $ hg clone server repo-Celeste

  updating to branch default

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cat << EOF >> repo-Celeste/.hg/hgrc

  > [ui]

  > username = celeste

  > EOF

Create some changesets locally

  $ cd repo-Alice

  $ mkcommit c_A0

  $ mkcommit c_B0

  $ cd ..

Bob pulls from Alice and rewrites them

  $ cd repo-Bob

  $ hg pull ../repo-Alice

  pulling from ../repo-Alice

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 2 changesets with 2 changes to 2 files

  new changesets d33b0a3a6464:ef908e42ce65 (2 drafts)

  (run 'hg update' to get a working copy)

  $ hg up 'desc("c_A")'

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg commit --amend -m 'c_A1'

  1 new orphan changesets

  $ hg rebase -r 'desc("c_B0")' -d . # no easy way to rewrite the message with the rebase

  rebasing 2:ef908e42ce65 "c_B0"

  $ hg up

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg commit --amend -m 'c_B1'

  $ hg log -G

  @  5:956063ac4557 c_B1

  |

  o  3:5b5708a437f2 c_A1

  |

  o  0:e82fb8d02bbf ROOT

  $ hg log -G --hidden -v

  @  5:956063ac4557 c_B1

  |

  | x  4:5ffb9e311b35 c_B0 [rewritten using amend as 5:956063ac4557 by bob (at 1970-01-01 00:00 +0000)]

  |/

  o  3:5b5708a437f2 c_A1

  |

  | x  2:ef908e42ce65 c_B0 [rewritten using rebase as 4:5ffb9e311b35 by bob (at 1970-01-01 00:00 +0000)]