If odoo is configured with a logfile, log to a separate file in the
same directory.
* log request / response when querying github
* log *received* requests for webhooks
Either way log the entire request metadata, though only the first 400
bytes/chars of the entity bodies.
This is intended to help mostly with post-mortem debugging: timestamps
from the main log can be correlated with the timestamps from the
github log in order to have more relevant information, both for
internal use and to send to gh support.
Closes#257
Ensure that the commits we're creating are based on the commit we're
expecting.
This is the second cause (and really the biggest issue) of the "Great
Reset" of master on November 6: a previous commit explains the issue
with non-linear github operations (update a branch, get the branch
head, they don't match).
The second issue is why @awa-odoo's PR was merged with a reversion of
@tivisse's as part of its first commit.
The stage for this issues is based on the incoherence noted above:
having updated a branch, getting that branch's head afterward may
still return the old head. However either delays allow that update to
be visible *or* different operations can have different views of the
system. Regardless it's possible that `repos/merges` "sees" a
different branch head than a `git/refs/heads` which preceded it by a
few milliseconds. This is an issue because github's API does not
provide a generic "rebase" operation, and the operation is thus
implemented by hand:
1. get the head of the branch we're trying to rebase a PR on
2. for each commit of the PR (oldest to newest), *merge* commit on the
base and associate the merge commit with the original
3. reset the branch to the head we stored previously
4. for each commit of the PR, create a new commit with:
- the metadata of the original
- the tree of the merge commit
- the "current head" as parent
then update the "current head" to that commit's ref'
If the head fetched at (1) and the one the first merge of (2) sees are
different, the first commit created during (4) will look like it has
not only its own changes but also all the changes between the two
heads, as github records not changes but snapshots of working
copies (that's what a git tree is, a complete snapshot of the entire
state of a working copy).
As a result, we end up not only with commits from a previous staging
but the first commit of the next PR rollbacks the changes of those
commits, making a mess of the entire thing twice over. And because the
commits of the previous staging get reverted, even if there was a good
reason for them to fail (not the case here it was a false positive)
the new staging might just go through.
As noted at the start, mitigate that by asserting that the merge
commits created at (2) have the "base parent" (left parent / parent
from the base branch) we were expecting, and cancel the staging if
that's not the case.
This can probably be removed if / when odoo/runbot#247 happens.
It's a waste to lose the entire staging if it's only a short blip /
delay thing, so retry multiple times. Add utility function to make
backoff functions easier (though the UI is not great ATM).
Also log the "left" parent of a merge commit (which should be the
"base") when creating it, for additional post-mortem information.
Turns out not only can that operation fail, that operation can succeed
but have its effect delayed. To try and guard against that,
immediately check that we get the correct ref' after having reset it.
This is the cause of the November 6 mess: when preparing a staging,
the mergebot does the following,
1. get the head of <branch>
2. hard-reset tmp.<branch> to that
3. start merging PRs, which requires getting the current state of
tmp.<branch> back
On the 6ths, these steps looked like this
```text
2019-11-06 10:03:21,588 head(odoo/odoo, master) -> ab6d0c38512e4944458b0b6f80f38d6c26b6b597
2019-11-06 10:03:22,375 set_ref(update, odoo/odoo, tmp.master, ab6d0c38512e4944458b0b6f80f38d6c26b6b597 -> 200 (OK)
2019-11-06 10:03:28,674 head(odoo/odoo, tmp.master) -> de2a852e7cc1f390e50190cfc497bc253687fba8
2019-11-06 10:03:30,292 head(odoo/odoo, tmp.master) -> de2a852e7cc1f390e50190cfc497bc253687fba8
```
So the 'bot fetched the commit at the head of master (ab6d0c), reset
tmp.master to that... and then got a different commit when it fetched
the tmp head to stage a PR on it.
That different head being of course a previous rejected staging. When
the new staging succeeded, it brought the entire thing in and made a
mess.
This was compounded by an issue I still have to investigate: the
staging of the new PR took the wrong base commit *but the right base
tree*, as a result the first thing it did was *reverse the entire
previous commit* (without that we could probably have left it as-is
rather than need to force-push master -- twice).
* add a sorted method on fake models
* fix recordset equality to ignore ids order
* when creating commits on a ref, add a param to only *update* the ref
(forcefully): when simulating a force-push we don't want to *create*
a ref as that might silently be done in the wrong repository entirely
* fix pytest.skip call at the module level, not sure where it came
from and why I missed it until now
The closing or reopening of PRs was not logged at all, which can be
inconvenient when trying to find out why PRs are closed (or not) in
the backend.
Also leverage PR display_name improvements from
3ce3dd9569 for more regular PR names in
logs.
When posting a reminder that there are open / waiting forward ports on
a source PR, also post *which* PRs those are.
While at it, move the cron code in a proper python file (so we can use
stuff from odoo.tools), and fix display_name so we can straight use
display_name as a github ref' ({owner}/{repo}#{number}). This impacts
log-grepping but it seems like an improvement nonetheless.
Closesodoo/runbot#228
* shorten the postfix, forwardbot is now a bigram!
* shorten the uniquifier: go from 5 to 3 bytes, and use urlsafe base64
that way we only have a 4-char uniquifier instead of 8
* while at it, fix deprecated calls to logging.warn (should be
logging.warning)
Fixes#226
The fw-bot testing API should improve the perfs of mergebot tests
somewhat (less waiting around for instance).
The code has been updated to the bare minimum (context-managing repos,
change to PRs and replacing rolenames by explicit token provisions)
but extra facilities were used to avoid changing *everything*
e.g. make_commit (singular), automatic generation of PR refs, ...
The tests should eventually be updated to remove these.
Also remove the local fake / mock. Being so much faster is a huge
draw, but I don't really want to spend more time updating it,
especially when fwbot doesn't get to take advantage. A local /
lightweight fake github (as an external service over http) might
eventually be a good idea though, and more applicable (including to
third-parties).
Attempt to avoid some of the comment spam by dedup-ing input (only
signaling when the status actually changes and ignoring identity
transformations) and in case of failing CI keeping the last failed
status and not signaling on the next update if it's the same failure.
Closes#225
* only show 2 stagings on cellphones as 4 is way too much, moving to a
vertical layout would probably be a bad idea as stagings can already
be very tall and then we have multiple branches stacked on one
another, unless we also make branches foldable
the more complete list of stagings (per branch) is available on the
branch's page anyway so providing a not-completely-broken home looks
more useful, and at a fundamental level the current / last staging
is really the one we care about
* remove the size bounds on stagings to avoid smushing all the cells
together and overlapping text, sadly can't overflow scroll the
stagings element because you can't have an overflow-x: scroll and an
overflow-y: visible (that becomes auto)
The staging validation routine would ignore stagings which were
cancelled or ff_failed, but it should also have ignored failed and
successful aka all terminal state.
Simplify the condition for that: just ignore a staging's validation if
the staging is not pending.
Closes#211
Turns out we don't want to close the cursor on success, we just want to
commit, but that's not what the default context manager does.
So don't use said context manager.
If a _validate call blows up, the entire Commit._notify cron gets
stuck, which is an issue because not only does it stop creating
forward ports, it also stops "progressing" stagings.
If the CI is greatly backed up (either insufficient capacity or jobs
spike) a timeout which is normally perfectly fine might be
insufficient e.g. given a 2h timeout, if a job normally takes 80mn but
the staging's job starts 40mn after the staging was actually created
we're sunk. And cancelling the staging once the job has finally gotten
started is not going to improve load on the CI, it just wastes a CI
slot.
Therefore assume a `pending` event denotes the actual start of the job
on the CI, and reset the timeout to start from that moment so
ci_timeout is the timeout of the CI job itself, not of the staging
having been created.
Closes#202
Converge the pytest setups of runbot_merge and forwardport a bit
more (the goal is obviously to eventually share the infrastructure so
they run the same way).
Having all the feedback be sent by the mergebot user (github_token) is
confusing. Add a way to specify which field of project should be used to
source the token used when sending feedback.
Fixes#190
* Cherrypicking is handrolled because there seems to be no easy way to
programmatically edit commit messages during the cherrypicking
sequence: `-n` basically squashes all commits and `-e` invokes a
subprocess. `-e` with `VISUAL=false` kinda sorta works (in that it
interrupts the process before each commit), however there doesn't
seem to be clean status codes so it's difficult to know if the
cherrypick failed or if it's just waiting for a commit of this step.
Instead, cherrypick commits individually then edit / rewrite their
commit messages:
* add a reference to the original commit
* convert signed-off-by to something else as the original commit was
signed off but not necessarily this one
* Can't assign users when creating PRs: only repository collaborators
or people who commented on the issue / PR (which we're in the
process of creating) can be assigned.
PR authors are as likely to be collaborators as not, and we can have
non-collaborator reviewers. So pinging via a regular comment seems
less fraught as a way to notify users.
Prepares for more complex edition operations on the forwardbot side
* split out the pseudo-headers from the message body
* don't separate the co-authored-by headers from the others, seems
unnecessary, we just need to ensure they're at the end so github
doesn't miss them (/it)
* split action_cancel (UI button) from cancel (internal): since the
xhr mapping is weird, if there are available args the mapper thinks
it should pass the call context as reason which is unexpected
* make cancel a no-op when called on already inactive stagings
* make cancel work when called on multiple statgings
* make computing the active staging work properly in an
active_test=False context (e.g. when it's interacted with from the
form view because that comes from the list view which is
active_test=False, probably so we can see not just the stagings but
recursively see deactivated batches in deactivated stagings)
* don't show the cancel button on inactive stagings
A deactivated branch is generally treated as unmanaged which is mostly
correct except for the case of retargeting an existing PR.
When a branch is deactivated the corresponding PRs are not removed, so
it's possible to have live PRs associated with ~unmanamaged
branches. When retargeting those PRs to active branches, the mergebot
would assume there was no existing PR and would create a duplicate,
then either get completely lost (before
a84595ea04) or blow up (after the same).
Properly search amongst deactivated branches for retargeting sources
so we update the relevant PR instead of trying to create duplicates.
Fixes#169
Stagings have a "statuses" field which was shown but useless (as it's
a binary), they also have a "heads" field which only provides a
mapping of repository names to commits.
This change provides the staging heads as a commits m2m.
Fixes#178
* extract method to create a PR object from a github result (from the
PR endpoint)
* move some of the remote's fixtures to a global conftest (so they can
be reused in the forwardbot)
In case of error while fast-forwarding a staging to its source, we'd
log the target to which we couldn't FF. Sadly this relied on a
`repo_name` variable which (likely since the introduction of the
"safety dance" fast forwarding) can not actually be set in case of
failure.
So stash the relevant bit (the repo name) inside the FF error exception
and use that to compose our logging message instead of a variable which
can only be None.
Github constrains a single issue (/PR) number per repository, having
different targets does not allow two PRs to share a number.
Doesn't fix but should mitigate #169 slightly.
Before this change mergebot assumes github's tags are in sync with its
"previous" state, but because tags update was highly non-atomic (one
call per removal plus one for additions) and state can further change
between a failure and an update retry (especially as the labels endpoint
fails *a lot*), it's possible for set tags (in github) to be completely
desync'd from the mergebot state, leading to very misleading on-pr
indications.
This first fetches the current tagstate from github (to not lose non-
mergebot tags) then (hopefully atomically) resets all tags tags based on
the current mergebot state. This should avoid desyncs, and eventually
resync PRs (if they change state).
Fixes#170
On a PR being updated, closed or unreviewed, if it is part of an
active staging that staging would get cancelled (yay). However, if the
PR was part of a pending *split*, then the split would *not* get
cancelled / updated (to remove the PR from it), and the PR could go on
to get staged as if everything were right in the world which is an
issue.
It doesn't look like it actually happened (at least I got no echo of
it), but it almost did at least once.
fixes#160
Also add test for it & feedback of an approved PR failing CI, and fix
corner case with it (might not send a warning immediately on CI failure
depending on status requirement ordering).
Fixes#158
* when rebasing, store a map of rebased to source, that way it'll be
possible to link cherry-picked forward ports to the originally
integrated commit rather than just the one from the PR (which was
likely not itself integrated as the straight merge mode is somewhat
rare: as of 5600 PRs merged so far only 100 were straight merged)
* while at it, store the "merge head" of the PR (whether squashed,
merged or rebased) and put *that* in the commit message
fixes#161
Sometimes people add co-authored-by lines in the middle of their
message, where github ignores them.
Since we previously added properly handling existing (correct) C-A-B
lines in the case where we're adding fixes and signed-off-by, we might
as well fix-up existing but mispalced co-authored-by lines.
Fixes#107
Previously, creating a PR would validate the head (in case it had
already passed CI) but reopening it would not, which is inconvenient
as the CI would not automatically run on a reopened PR.
Update both the state and the head of the PR on reopen to force a
revalidation, that way if the head has already passed CI the PR will
be reopened validated and there won't be an unclear need to perform an
explicit CI run.
Fixes#119
If the author of a PR has blocked the bot user, commenting on the PR
will fail. While comment failure is technically handled in the feedback
cron, the cron will simply retry commenting on every run filling the
log with useless unactionable garbage.
Retrying is the right thing to do in the normal case (e.g. changing tags
often has transient failures), but if we figure out we're blocked we
might as well just log a warning and drop the comment on the floor, it's
unlikely the situation will resolve itself.
Couldn't test it, because the block API is a developer preview and I
just can't get it to work anyway (404 on /user/blocks even providing the
suggested media type).
And the way the block is inferred is iffy (based on an error message),
the error body doesn't seem to provide any clean / clear cut error code:
{
"message": "Validation Failed",
"errors": [
{
"resource": "IssueComment",
"code": "unprocessable",
"field": "data",
"message": "User is blocked"
}
],
"documentation_url": "https://developer.github.com/v3/issues/comments/#create-a-comment"
}
No useful headers either.
Fixes#127
The race condition which prompted STAGING_SLEEP rears its ugly head
again: when pushing a base repo and its dependents, it's possible for
the update to the base repo's new head to take much longer to be visible
than the dependents (or so it seems?).
In this case, CI might pick up the correct dependent but pick an older /
incorrect revision of the base, leading to a staging failing for no good
reason.
This change uses info/refs to check for the updated staging head to be
visible at the repo level after it's been set / updated via the API. It
assumes repos are in topological order.
Use the proper / actual "is there any stageable PR" query to check if
a PR is blocked as well, that way they shoudn't be diverging all the
time even if it might make PR.blocked a bit more expensive.
fixes#111
A status being updated on a commit is a read/modify/update, meaning
it's possible for somebody else (including a concurrent event?) to
concurrently update the commit and conflict leading to the webhook
blowing up, which is undesirable as it's a data loss (whereas if it
blows up on the other side e.g. in the cron's commit processor the
cron will just take it up next iteration).
Might eventually extract / generalise, but for now it's simpler to
just do it in runbot_merge's post_load, that way there's no setup
change (just a small bit of configuration), and it's only enabled on
the instances runbot_merge is installed on.
fixes#97, closes#103
Will comment any time a statuses update folds to a CI failure on a
reviewed pull request. Might be somewhat spammy, we'll see.
No notification if the PR is not reviewed yet.
fixes#87
Before this, impacting a commit's statuses on the relevant PR or
staging would be performed immediatly / inline with its
consumption. This, however, is problematic if we want to implement
additional processing like #87 (and possibly though probably not #52):
webhook handlers should be kept short and fast, feeding back into
github would not be acceptable.
- flag commits as needing processing instead of processing them
immediately, this uses a partial index as it looks like the
recommended / proper way to index a boolean column in which one of
the values is searched much more than the other (todo: eventually
check if that actually does anythnig)
- add a new cron for commits processing
- alter tests so they use this new cron (mostly by migrating them to
`run_crons` though not solely as some still need more detailed
management to properly check intermediate steps)
Fix an issue with closing a staged PR while at it (the "merging" tag
would potentially never be removed).
Proper RFC5322 makes for much noisier messages, and seems completely
unnecessary as examples of sign-off on the internet don't quote spaces
/ names.
closes#102
* split out truly awaiting PRs from those waiting on an event of some
sort
* if a staging is active but doesn't have a state yet, it should be
considered pending not cancelled
closes#74
If a PR gets sync'd to a known-valid commit, it should be marked as
valid rather than get in this weird state where it's merely open but
github knows it passes CI.
Fixes#72
This is somewhat less useful with runbot's fail-fast as a runbot
failure (false positive or not) will now very quickly trigger an end
to the current staging.
Still, could be of use.
closes#89
The choice to keep sync'd PRs in error means it's possible to update
the code and re-run the PR directly without it going through review &
CI again, which is a bit odd. Remove the special case and always reset
a sync'd PR to opened for clarity and simplicity.
closes#71closes#83
Turns out skipping locks is not very useful when there are no locks
being held because we only touch the PRs *after* the merge has been
applied.
So finally do that, lock all of a staging's PRs before we try to
fast-forward the relevant repositories, so a close command coming back
from github (from having seen the closes #xxx annotation) doesn't
screw us over.
No test because I don't understand how / why it's triggered, it's just
that some PRs don't have a label. I assumed the issue occurred when
the source branch or even repo (cross-repo PR) was deleted, but it
doesn't seem to trigger the issue (or in any case not in as short a
time as a test, maybe GH eventually does some vacuuming which causes
the issue?
Anyway we may eventually want to reclaim these PRs (allowing a lack of
label and treating them like the patch-\d labels: with no semantic
value) however the simplest thing to do for now is to just ignore the
corresponding PR.
closes#101
In remote tests, if the deletion of a test repository fails (because
gh glitch) or the repo creation succeeded but reported a failure (for
some reason) the entire run is hosed because every test trying to
create a similarly named repository will explode.
Alter repomaker to just try to delete the repo, unless --no-delete
mode in which case just skip any further test trying to use the same
repository (not deleting the repo is the entire point of --no-delete,
as its purpose is the ability to do post-mortem debugging on
repository state).
closes#99
Github is subject to a fair amount of transient failures, which are
currently ill-logged: an exception is raised and the caller /
responsible might eventually log something, but it's not really
formalised and centralised, and is thus inconvenient to try and
post-mortem issues with github's support.
Change this such that *almost* all github API calls get extensively
logged (status, reason, all headers, body) on failure.
Also automatically sets debug logging for odoo in local tests, and
alter the fake response constructor thing so it doesn't set a json
mimetype when the body is not valid json.
Closes#98
The number is probably the most common search criteria for PRs (to
track their status / issues). Having to go through custom filters to
find one is a pain in the ass.
Already done live by editing the view, but means it's getting lost
every time the module gets updated.
closes#73
When a user changes the merge method via github messages, no feedback is
sent. This could lead to strange behavior, for example when a user try
to joke with the mergebot like this:
> robodoo are you goin ti merge my PR rogntudju !
This sets the merge method to "merge" and the user is not aware of it.
Before this change, the order of PRs to list in an "unready" feedback
message was whatever the DB returned which could vary. This change
fixes the order by applying model order.
If a transient github failure makes the integration fail but also
makes the following reset fail the entire staging process would be
cancelled (and operations so far rollbacked) except for the failure
comment which would be effected, as in odoo/odoo#26380.
By pushing the comment to the feedback queue, if the reset fails the
comment is rollbacked and "unqueued".
Closed tagging was broken since the raw-sql alterations of the close
hook: because it's raw SQL, the write() method doesn't get invoked
anymore and as a result the tagging feedback record is not created,
and never executed.
Add a test to check for the PR's proper tagging, and fix this issue by
explicitly creating a tagging record.
Closes#49
Hopefully this finally fixes the double commenting
issue (e.g. odoo/odoo#28160). This seems (according to reading the
logs and also logic) like a failure (concurrency of some sort) leading
to a transaction rollback *after* the GH API call, so the cron's DB
actions are rollbacked (then performed again on the next run) *but*
the GH API interactions are not rollbacked, and are thus performed
twice.
Since the entire purpose of the feedback table is to send comments,
send both "staging failed" and "Linked pull requests" comments via
that.
Once more unto the breach, with the issue of pushing stagings (with
"closes" annotations) to the target branch making GH close the PR &
send the hook, which makes runbot_merge consider the PR closed and the
staging cancelled.
This probably still doesn't fix the issue, but it reduces the
problematic window: before this, the process first updates the
branches, then marks the PRs, then comments & closes the PRs, and
finally commits the PR update.
This means as runbot_merge is sending a comment & a status update to
each PR in a staging, GH has some time to send the "closed" webhook
behind its back, making the controller immediately cancel the current
staging, especially if the v3 endpoint is a bit slow.
By moving the commenting & closing out of the critical path (to the
feedback queue), this window should be significantly shortened.
Runbot is supposed to run on v11, yet because the runbot_merge test
suite was built on v12 due to an API change in
Registry.enter_test_mode the (local) test suite would only run on v12.
Add a conditional pick such that the test suite can run transparently
on both v11 and v12.
Normally, two PRs from the same owner with the same branch
name (source) are batched together, and that's represented by batching
them by label e.g. two PRs labelled
`odoo-dev:12.0-snailmail-address-format-anp` means they probably
should be merged together somehow.
*However* this is an issue when editing via the web interface: if the
editor doesn't have write access to the repository, github
automatically createa a branch called `patch-<n>` under their
ownership, where `<n>` is a sequence (of sorts?) *within the user's
fork*.
This means it's possible (and indeed easy) to create <foo>:patch-1 on
different (non-forks) but related repositories without them actually
being co-dependent, at which point they get blocked on one
another, which can lead to them being blocked (period) due to runbot
not currently handling co-dependencies between PRs.
Currently, if a staging is ongoing or failed one has to hunt for the
staging branches on the runbot dashboard in order to find out what
happens.
This adds a dropdown to the staging box/block providing direct status
and access to all the CI information whether the CI is ongoing or done,
successful or not.
Apparently the split and move arounds caused the _tagstate to get
computed/updated earlier (/differently), and thus the tagging update
relying on it to... not work anymore.
At least restore adding a "merging" tag when a PR is staged.
rebase() can fail after merge(), during set_ref(), having already
updated the target.
Under the pre-rebase model, stage() assumed on a staging failure on a
given repo it only had to rollback stagings having succeeded. This
assumption fails in a post-rebase model as even a failed staging can
have modified the target, leading to the next staging (if multiple
batches are ready) containing the failed one.
Things can get really strange if the set_ref failure was (as it
probably is) some sort of transient failure, as the following staging
will likely succeed (under the assumption that most PRs/batches pass
staging) as PR1's content gets merged as part of PR2, and PR2 is
merged empty of content later on.
Original issue (staging would get cancelled just as it was being
merged) was not really fixed but traded for a new one: serialization
errors which can lock up the mergebot for a long time, stopping
handling of all incoming signals (possibly/probably because all of
them try to write on the PR which is locked?).
Splitting the tagging cron out should already way improve things as
the status update cron should be way shorter (and thus hold its locks
for a smaller amount of time). This should also avoid the "close"
handler waiting on the extant transaction, and make the "pr update"
transaction be much shorter as each staging gets its own tnx.
Send reponse comments when users mis-interact with robodoo e.g.
send comments they don't have the right to, or commands which don't make
sense in the PR's state, or tentative interactions with robodoo from
unmanaged PRs.
People get surprised/worried that their ready PR never gets picked up,
but it's because there is a non-ready (either unreviewed or failing CI)
pull request linked to it. This aims to at least warn them of the issue.
Taking 3 statements to create a branch before working with it is a bit
much, a simple helper reduces that to a single function call with 4
params (from 3 function calls with 1/4/1 params).
As noted in the old comment, the provided commit was the head of the
staging branch. This confused many users as they'd click the link
expecting to see their commit and potentially got something completely
unrelated.
Since we already get backlinks from the commit through the "closes
<pr_number>" added either by the committer or by the bot itself, the
information is already available.
They're completely independent (or should be), and there's no reason
for the tagging cron to extend the "lifetime" of the main cron's
transaction (and thus extend the odds of racey behaviour).
* fix "Active" filter which was not updated when the active field was
added
* properly enable it by default instead of relying on active_test
* disable active_test on the Stagings action, otherwise the batches
are not visible in the staging once the staging and batches have been
disabled
If a staging covers multiple repositories and there's a fast-forward
issue on any but the first repo/target, runbot_merge attempted to
revert the commits it had fast-forwarded on the previous repos.
This doesn't work when branch-protection is active, unless runbot_merge
is a repository administrator (and branch protection is not configured
to apply to those): reverting is done by push-forcing the original head
back onto the ref, which branch-protection unconditionally precludes.
This commit does not entirely fix the race condition (it does not look
like github provides any way to do that), but it should significantly
reduce the race-condition window as it performs a semi-wet run of the
fast-forward process on the tmp branches before actually updating the
targets. That way the only remaining breakage should be when somebody
pushes on repositories 1.. between the test-FF on tmp branches and the
actual fast forward.
While at it, updated the github API thing to *always* dump the JSON body
on an error response, if the content-type is json.
Previously, runbot_merge assumed github would return commits in
topological order (from base to head of PR). However as in the UI
github sorts commits using the author's date field, so depending on
rebasing/cherrypick/... it's possible to have the head of the commit
be "younger" than the rest. In that case robodoo will try to merge
it *first*, then attempt to merge the rest on top of it (-ish, it'd
probably make a hash of it if that worked), at which point github
replies with a 204 (nothing to merge) because the PR head has already
included everything which topologically precedes it.
Fix: re-sort commits topologically when fetching the PR's log. That
way they're rebased in the proper order and correctly linked to one
another.
Example problematic PR: odoo/enterprise#2794, the commits are
773aef03a59d50b33221d7cdcdf54cd0cbe0c914
author.date: 2018-10-01T14:58:38Z
879547c8dd37e7f413a97393a82f92377785b50b (parent: 773aef03)
author.date: 2018-10-01T12:02:08Z
Because 879547c8 is "older" than 773aef03, github returns it first,
both in the UI and via the API.
Also fixed up support for committer & author metadata in fake_github
so the local tests would both expose the issue properly and allow
fixing it.
Rather than blow up with a json error and take down the cron, convert
json decode error to a mergeerror in order to put the PR in error and
try to dump however much data we can.
Because mergebot cron can run on any runbot, it's apparently possible
that a staging gets merged and the "closed" feedback from github
overwrites the merged status which the mergebot is supposed to set
despite the supposed protection.
* [ADD] runbot_merge: more informative states to stagings on error
Currently, when a staging fails for other reasons than a CI failure:
* the staging having been cancelled is known implicitly, because the
staging will be deactivated but will never get a status beyond
pending (because it's not found when looking for it since it's not
`active`)
* the fast-forward having failed is completely silent (logging aside),
it looks for all the world like the staging succeeded
Timeout fails the PR already, but split-on-timeout was not so fix that
one bit.
* [FIX] odoo/odoo#cb2862ad2a60ff4ce66c14e7af2548fdf6fc5961
Closes#41
The webhook used the "sender" of the event as comment author, however
if the comment is edited by a maintainer github sends a
"issue_comment" event with that maintainer as sender.
This means a random user could create a comment with a robodoo
command, and if a registered reviewer happened to edit the comment the
command would suddenly be taken in account. This was not the intention.
I just spent 10mn trying to find out why staging 28 was cancelled
(a p=0 comment). Add a common prefix to all staging cancels to make
them easier to find.
staging delay was mistakenly commented in
bb664455ec
Also modified testing fixtures so the staging delay is not enabled when
running tests locally: on my box it increases the local runtime from
~70s to ~1500s (20s/staging, ~1 staging/test, 73 tests)
It should be unnecessary: creating commits directly does not update
the ref (hence 2b1cd83b07) and we're
forcefully setting the ref afterwards, either resetting it to the
original head (for rebase) or updating it to the commits we've just
created (for squash).
Before this, the bot would only acknowledge commands of the form
<botname>: <commands>
but since the bot is an actual user, people regularly use `@<botname>`
as it seems like it should work *and* provides for autocompletion.
Support that, as well as the octothorpe in case users want to pound
robodoo.
Related to odoo/runbot#38
Continuation of fa94b269de which is
apparently not sufficient:
1. log the staging event so we can check that we're staging in the
correct order
2. add a delay after each staging in case there's some sort of race
in the updating of codependent repositories
When creating staging branches from tmp, use the iteration order of
the repos in the project (that way it's easy to see and eventually
configure if we add sequences or whatever, in the short term it's the
order in which the repos were added which is the one we want).
This ensures we stage odoo/odoo before we stage odoo/enterprise
without relying on dict order of iteration, or needing meta to be an
OrderedDict.
The issue is if stagings are created/updated the other way around, the
runbot may pick up staging on odoo/enterprise before odoo/odoo has
been updated, and thus build odoo/enterprise with the wrong odoo/odoo
commit, and defeat the entire point of it.
Example: http://runbot.odoo.com/runbot/build/376112 was triggered by
the same staging as http://runbot.odoo.com/runbot/build/376113, but
used the previous staging head.
The creation order of tmp branches should not matter so ignore it.
A limitation to 50 commits PRs was put in place to avoid rebasing
huge PRs (as a rebase means 1 merge + 1 commit *per source commit*),
however the way it was done would also limit regular merges, and the
way the limitation was implemented was not clear.
* explicitly check that limit in the rebase case
* make error message on PR sizes (rebase 50 or merge 250) clearer
* remove limit from commits-fetching (check it beforehand)
* add a test to merge >50 commits PRs
* fix the local implementation of pulls/:number/commits to properly
paginate
2b1cd83b07 fixed a bug in PR
squashing (introduced when it was mis-rebuilt on top of rebase) which
was immediately committed & pushed so we could fix the running
mergebot.
This adds a test for that issue, it was checked to fail for
2b1cd83b075a99da7ed905b9e62d7e5acb48b253~1 and work as of the current
head.
Turns out the previous tests checked all the new/complex features to
see if they worked correctly, but I completely forgot that the
previously working squash had been rebuild.
Staging 13 tried merging 3 PRs (27085, 27083 and 27071) and supposedly
succeeded *but* only merged one of the 3 PRs despite marking all three
as merged. I tried building a few tests constructing multi-PR graphs
and checking them, but the only thing they exposed was the local
github implementation not correctly updating merge targets.
So fixed that, which is good.
Doesn't tell me why the staging didn't work right though.
a0063f9df0 slightly improved the error
message on non-PR ci failure (e.g. a community PR makes enterprise
break) by adding the failed commit, but that's still not exactly clear,
even for technical users (plus it requires having access to all the
repos which is not the case for everyone).
This commit further improves the situation by storing the target_url
and description fields of the commit statuses, and printing out the
target_url on failure if it's present.
That way the PR comment denoting build failure should now have a link to
the relevant failed build on runbot, as that's the target_url it
provides.
The change is nontrivial as it tries to be compatible with both old and
new statuses storage format, such that there is no migration to perform.
e98a8caffb added dummy commits to the
heads of stagings and fixed most places to make a difference between
the staging head (including dummy commit) and the actual merge head,
but the difference was missed in the comment closing a PR, which was
still using the staging head and thus pointing to the dummy commit
e.g. (https://github.com/odoo/odoo/pull/26821#issuecomment-420244592)
If CI fails on a non-PR'd branch of a staging (e.g. given repos A and B
and a PR to A, CI fails on the staging branch to B), the error message
(log and comment on the PR) is unhelpful as it states that the staging
failed for "unknown reason".
Improve this by providing the failed CI context and the commit, which
should allow finding out the branch & CI logs, and understanding the
why of the failure.
Fixes#36
Before this change, when staging batches only affecting one repo (of n)
the unaffected repositories would get a staging branch exactly matching
the target.
As a result, either runbot_merge or runbot would simply return the
result of an unrelated build, potentially providing incorrect
information and either failing a staging which should have succeeded
(e.g. change in repo A broke B, PR is making a change in repo A which
fixes B, but B's state is reported as the previous broken build) or
succeeding a staging which should have failed (change in repo A breaking
B except a previous build of the exact same B succeeded with a different
A and is returned).
To fix this issue, create a dummy commit at the head of each staging
branch. Because commit dates are included in the hash and have a second
precision it's pretty unlikely that we can get built duplicates, but
just to be completely sure some random bits are added to the commit
message as well.
Various tests fixed to correctly handle the extra dummy commit on
staging branches.
fixes#35
After discussion with mat, rco and moc, if a PR is updated it should
be unapproved for safety reasons: if a reviewer approves a PR, that's
what should be merged, if there are things to fix/change a reviewer
should at least rubberstamp the changes to avoid mistakes.
This is a bit more noisy/constraining, but can be changed or tuned
afterwards if it's considered too constraining.
rebase-and-merge (or squash-merge if pr.commits == 1) remains default,
but there are use cases like forward ports (merge branch X into branch
X+1 so that fixes to X are available in X+1) where we really really
don't want to rebase the source.
This commits implements two alternative merge methods:
If the PR and its target are ~disjoint, perform a straight merge (same
as old default mode).
However if the head of the PR has two parents *and* one of these
parents is a commit of the target, assume this is a merge commit to
fix a conflict (common during forward ports as X+1 will have changed
independently from and incompatibly with X in some ways).
In that case, merge by copying the PR's head atop the
target (basically rebase just that commit, only updating the link to
the parent which is part of target so that it points to the head of
target instead of whatever it was previously).
After discussion with al & rco, conclusion was default PR merging method
should be rebase-and-merge for cleaner history.
Add test for that scenario (w/ test for final DAG) and implement this
change.
* Add ids accessor to the remote Model fake
* Explicitly ignore order when unnecessary, a test fails since the
ordering of prs has been changed for UI purposes. This is only an
issue for Remote though it's unclear why (as the local Issue/PR
objects should still have a per-repo sequence)
* avoid fetching PRs for un-managed branches if we know up-front
* avoid processing comments with no commands (avoids fetching the
corresponding PR which we know nothing about yet and which may or
may not be for a managed branch)
The old "sync pr" thing is turning out to be a bust, while it
originally worked fine these days it's a catastrophe as the v4 API
performances seem to have significantly degraded, to the point that
fetching all 15k PRs by pages of 100 simply blows up after a few
hundreds/thousands.
Instead, add a table of PRs to sync: if we get notified of a
"compatible" PR (enabled repo & target) which we don't know of, create
an entry in a "fetch jobs" table, then a cron will handle fetching the
PR then fetching/applying all relevant metadata (statuses,
review-comments and reviews).
Also change indexation of Commit(sha) and PR(head) to hash, as btree
indexes are not really sensible for such content (the ordering is
unhelpful and the index locality is awful by design/definition).
Previously when splitting staging we'd create two never-staged
stagings. In a system where the stagings get deleted once done
with (succeeeded or failed) that's not really important, but now that
we want to keep stagings around inactive things get problematic as
this method gunks up the stagings table, plus the post-split stagings
would "steal" the original's batches, losing information (relation
between stagings and batches).
Replace these empty stagings with dedicated *split* objects. A batch
can belong to both a staging and a split, the split is deleted once a
new staging has been created from it.
Eventually we may want to make batches shared between stagings (so we
can track the entire history of a batch) but currently that's only
PR-level.
If we want a dashboard with a history of stagings, maybe not deleting
them would be a good idea.
A replacement for the headless stagings would probably be a good idea:
currently they're created when splitting a failed staging containing
more than one batch, but their only purpose is as splits of existing
batches to be deactivated/deleted to be re-staged (new batches &
stagings are created then as e.g. some of the batches may not be
merge-able anymore) and that's a bit weird.
Github apparently doesn't sync merged/closed PRs (which makes sense
but isn't really documented) so strip out test and assume that never
happens (with a log error in case it ever does).
Remote's labels are not entirely under our control as the part before
":" is the *owner* of the source repo => introduce additional "owned"
fixture to handle this case, as it may diverge from the "user" role if
running the tests against an organisation.
Can't really assume we can get the github logins "user" or "reviewer"
to run the test suite remotely, so add an indirection and backronym
those to *roles* instead. The local test suite has identical roles &
logins, but the remote version does not.
Also use the "other" role for any random user, and don't create its
partner up-front.
Also renamed the self-reviewer user to self_reviewer, that's a bit
less weird when dealing with e.g. ini files.
Turns out PATCH /git/refs/:ref returns a 422 when the ref does not
exist, rather than the 404 I'd expected.
Also improve the error message by including the JSON body which tends
to be more descriptive/helpful than the reason for Github's API.
Maybe I should replace all raise_for_status() by printing the JSON
body instead...
This is the preparation of an attempt to make these tests work with
both a local github mock (in-memory) and a remote actual github.
Move a bunch of fixtures relying on the specific github
implementation (and odoo-as-library access) to the "local" plugin,
including splitting the "repo" fixture.
The specific fixtures will likely have to be adjusted as the
remote endpoint is fleshed out.
AL thinks it's not useful and it's better to always squash/rebase a
single commit & merge multiple. Mark tests as xfail'd instead of
removing them.
Also mark test_edit_retarget_managed as skipped explicitly
Reviews are interpreted like comments and can contain any number of
commands, with the difference that APPROVED and REQUEST_CHANGES are
interpreted as (respectively) r+ and r- prefixes.
* p0 cancel existing stagings in order to be staged as soon as
possible
* p0 PRs should be picked over split batches
* p0 bypass PR-level CI and review requirements
* p0 can be set on any of a batch's PR, matched PRs will be staged
alongside even if their priority is the default
