Summary:
Depends on D19279. Ref T13110. This implements the existing publishing logic for buildables, but does so via ModularTransactions instead of a core transaction type.
Since each application is implementing build transactions independently, this removes the core type.
Next, Differential will get a similar treatment.
Test Plan: Used `bin/harbormaster publish` (with some commenting-out-guard-clauses) to publish a commit Buildable; saw unchanged feed behavior.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13110
Differential Revision: https://secure.phabricator.com/D19280
Summary:
Depends on D19278. Ref T13110. This moves most of the structural logic for publishing builds to BuildableEngine and provides a `bin/harbormaster publish` to make publishing easy to retry/debug.
This intentionally removes the bit which actually does anything when builds publish. Followup changes will implement application-specific versions of the publishing logic in Differential and Diffusion.
Test Plan: Ran `bin/harbormaster publish Bxxx`, saw it do nothing (but not crash).
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13110
Differential Revision: https://secure.phabricator.com/D19279
Summary:
Ref T13110. Currently, build status is published the same way for every Buildable by the BuildEngine.
I want to change this to delegate publishing to each Buildable, particularly so that Differential may use more detailed rules for handling builds and drafts.
Rather than add additional methods to the existing `BuildableInterface`, add an engine generator method instead. This is a pattern which has seen more use recently (e.g., in Ferret) and lets us pay a little more upfront to pull complex pieces of logic out of the main class and let them use inheritence more easily. If we had Traits that might cover this to some degree.
I'd expect to eventually reduce the size of `BuildableInterface` and move the `CircleCI` and `BuildKite` interfaces so that the `BuildableEngine` implements them instead of the main object.
Here, this new engine does nothing and is never instantiated. In upcoming changes, publishing logic will move into it so that Differential can handle publishing differently.
Test Plan: Ran `arc liberate`, loaded pages, grepped for `BuildableInterface`.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13110
Differential Revision: https://secure.phabricator.com/D19278
Summary:
See PHI446. Ref T13088. Currently, there's no way to access older generations of a build unless you know the secret `?g=1` URI magic.
When a build has multiple generations, show a history table and let users click to see older run information.
This is currently very basic. It would be nice to show when each generation started, who started/restarted it, and what the build status was at the time the build was restarted. There's currently no convenient source for this information so just add a bare-bones, working version of this for now.
Test Plan:
Viewed pending, single-run and multi-restart builds. Saw table on builds with more than one generation. Clicked table entries to see different build data.
{F5471160}
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13088
Differential Revision: https://secure.phabricator.com/D19217
Summary:
Depends on D19065. Ref T13054. Instead of just updating `containerPHID` and hoping for the best, queue a proper BuildWorker to process a "your container has changed, update it" message.
We also need to remove a (superfluous) `withContainerPHIDs()` when loading active diffs for a revision.
Test Plan:
- Without daemons, created a revision and saw builds stick in "preparing" with no container PHID, but also stay in draft mode.
- With daemons, saw builds actually build and get the right container PHID.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13054
Differential Revision: https://secure.phabricator.com/D19066
Summary:
Depends on D19064. Ref T13054. See that task for additional discussion.
When buildables are created by `arc` and have lint/unit messages, they can currently pass or fail before Herald triggers actual builds. This puts them in a pre-build state where they can't complete until Herald says it's okay.
On its own, this change intentionally strands `arc diff --only` diffs in the "PREPARING" stage forever.
Test Plan:
- Ran a build with `bin/harbormaster`, saw it build normally.
- Ran a build with web UI, saw it build normally.
- Ran a build with `arc diff`, saw it build normally.
- Ran a build with `arc diff --only`, saw it hang in "PREPARING" forever.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13054
Differential Revision: https://secure.phabricator.com/D19065
Summary: Depends on D19063. Ref T13054. Prepare for the addition of a new `PREPARING` status by getting rid of the "scattered mess of switch statements" pattern of status management.
Test Plan: Searched/browsed buildables. Viewed buildables. Viewed revisions. Grepped for all affected symbols.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13054
Differential Revision: https://secure.phabricator.com/D19064
Summary:
See T13054. This prepares for Buildables to be sent messages ("attach", "done scheduling builds") to fix races between Harbormaster and Differential.
The `buildTargetPHID` is replaced with a `recipientPHID` in the API. An additional change will fix the storage.
In the future, this table could probably also replace `HarbormasterBuildCommand` now, which is approximately the same bus, but for Builds.
Test Plan: Viewed builds with messages. Sent messages with `harbormaster.sendmessage`. Processed messages with `bin/phd debug task`.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Differential Revision: https://secure.phabricator.com/D19062
Summary:
Ref T13054. Fixes T10746. Fixes T11154. This is really a one-line fix (include `ABORTED` in `BuildEngine->updateBuildable()`) but try to structure the code a little more clearly too and reduce (at least slightly) the number of random lists of status attributes spread throughout the codebase.
Also add a header tag for buildable status.
Test Plan: Aborted a build, saw buildable fail properly.
Subscribers: yelirekim, PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13054, T11154, T10746
Differential Revision: https://secure.phabricator.com/D19055
Summary:
Fixes T9276. Fixes T8650. The story so far:
- We once published build updates to Revisions.
- An unrelated fix (D10911) sent them to the Diffs instead of Revisions, which isn't useful, since you can't see a diff's timeline anywhere.
- This also caused a race condition, where the RevisionEditor and DiffEditor would update the diff simultaneously (T8650).
- The diff update was just disabled to avoid the race (part of D13441).
- Instead, allow the updates to go somewhere else. In this case, we send commit updates to the commit but send diff updates to the revision so you can see 'em.
- Since everything will be using the revision editor now, we should either get proper lock behavior for free or it should be easy to add if something whack is still happening.
- Overall, this should pretty much put us back in working order like we were before D10911.
This behavior is undoubtedly refinable, but this should let us move forward.
Test Plan:
Saw a build failure in timeline:
{F2304575}
Reviewers: chad
Reviewed By: chad
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T9276, T8650
Differential Revision: https://secure.phabricator.com/D17139
Summary: See T10746.
Test Plan: Fail one of several builds, run `./bin/harbormaster update`, see that Build Status is Failed.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, O14 ATC Monitoring, yelirekim
Maniphest Tasks: T10746
Differential Revision: https://secure.phabricator.com/D16480
Summary:
Ref T11153. If you have a build plan like this:
- Lease machine A.
- Lease machine B.
- Run client-tests on machine A.
- Run server-tests on machine B.
...and we get machine A quickly, then finish the tests, we currently do not release machine A until the whole plan finishes.
In the best case, this wastes resources (something else could be using that machine for a while).
In a worse case, this wastes a lot of resources (if machine B is slow to acquire, or the server tests are much slower than the client tests, machine A will get tied up for a really long time).
In the absolute worst case, this might deadlock things.
Instead, release artifacts as soon as no waiting/running steps take them as inputs. In this case, we'd release machine A as soon as we finished running the client tests.
In the case where machines A and B are resources of the same type, this should prevent deadlocks. In all cases, this should improve build throughput at least somewhat.
Test Plan:
I wrote this build plan which runs a "fast" step (10 seconds) and a "slow" step (120 seconds):
{F1691190}
Before the patch, running this build plan held the lease on the "fast" machine for the full 120 seconds, then released both leases at the same time at the very end.
After this patch, I ran this plan and observed the "fast" lease get released after 10 seconds, while the "slow" lease was held for the full 120.
(Also added some `var_dump()` into things to sanity check the logic; it appeared correct.)
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11153
Differential Revision: https://secure.phabricator.com/D16145
Summary:
Ref T10537. For Nuance, I want to introduce new sources (like "GitHub" or "GitHub via Nuance" or something) but this needs to modularize eventually.
Split ContentSource apart so applications can add new content sources.
Test Plan:
This change has huge surface area, so I'll hold it until post-release. I think it's fairly safe (and if it does break anything, the breaks should be fatals, not anything subtle or difficult to fix), there's just no reason not to hold it for a few hours.
- Viewed new module page.
- Grepped for all removed functions/constants.
- Viewed some transactions.
- Hovered over timestamps to get content source details.
- Added a comment via Conduit.
- Added a comment via web.
- Ran `bin/storage upgrade --namespace XXXXX --no-quickstart -f` to re-run all historic migrations.
- Generated some objects with `bin/lipsum`.
- Ran a bulk job on some tasks.
- Ran unit tests.
{F1190182}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10537
Differential Revision: https://secure.phabricator.com/D15521
Summary: Fixes T10458. These steps are obsolete and have not worked since the last updates to Drydock. They may eventually return in some form, but get rid of them for now since they're confusing.
Test Plan:
- Created a build plan with these steps.
- Removed these steps.
- Verified the build plan showed that the steps were invalid, and that I could delete them.
- Deleted them.
- Added new steps, no obsolete steps were available for selection.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10458
Differential Revision: https://secure.phabricator.com/D15352
Summary:
Fix T9662.
Record who initiated the build, and allow this information as a parameter.
In this implementation, a 're-run' keeps the original initiator, which we maybe not desired?
Test Plan:
Make a HTTP step with initiator.phid, trigger manually, via HM, via ./bin/harbormaster build.
Look at requests made.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin
Maniphest Tasks: T9662
Differential Revision: https://secure.phabricator.com/D14380
Summary: Ref T9352. See D13635. Build targets can have variables already, but let builds have them too. This mostly enables future use cases (sub-builds, more sophisticated build triggers).
Test Plan: With a custom Herald rule + action like the one in T9352, updated a revision and saw it generate multiple builds with varying parameters.
Reviewers: chad, hach-que
Reviewed By: hach-que
Maniphest Tasks: T9352
Differential Revision: https://secure.phabricator.com/D14222
Summary:
Ref T8659. In the general case, this eventually allows build processes to do things like:
- Upload build results (like a ".app" or ".exe" or other binary).
- Pass complex results between build steps (e.g., build step A does something hard and build step B uses it to do something else).
Today, we're a long way away from having the infrastructure for that. However, it is useful to let third party build processes (like Jenkins) upload URIs that link back to the external build results.
This adds `harbormaster.createartifact` so they can do that. The only useful thing to do with this method today is have your Jenkins build do this:
params = array(
"uri": "https://jenkins.mycompany.com/build/23923/details/",
"name": "View Build Results in Jenkins",
"ui.external": true,
);
harbormaster.createartifact(target, 'uri', params);
Then (after the next diff) we'll show a link in Differential and a prominent link in Harbormaster. I didn't actually do the UI stuff in this diff since it's already pretty big.
This change moves a lot of code around, too:
- Adds PHIDs to artifacts.
- It modularizes build artifact types (currently "file", "host" and "URI").
- It formalizes build artifact parameters and construction:
- This lets me generate usable documentation about how to create artifacts.
- This prevents users from doing dangerous or policy-violating things.
- It does some other general modernization.
Test Plan:
{F715633}
{F715634}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T8659
Differential Revision: https://secure.phabricator.com/D13900
Summary: Fixes T7419. This doesn't really do anything, just adds documentation.
Test Plan:
- Read the documentation:
{F688899}
- Created a build plan which makes an HTTP request to `example.com` and waits for a result.
- Ran that build plan manually.
- Called `harbormaster.sendmessage` manually with the example lint/unit values to provide a result.
- Saw the results report correctly and the message ("fail") process as expected:
{F688902}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T7419
Differential Revision: https://secure.phabricator.com/D13789
Summary: Ref T8650. This should stop the problem, but isn't a root cause fix. See discussion on the task.
Test Plan: Made some local diffs, but this is a bit hard to reproduce reliably.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T8650
Differential Revision: https://secure.phabricator.com/D13441
Summary:
Ref T8096. Fixes a few bugs and glitches.
- Set build completion time when handling a message.
- Format duration information in a more human-readable way.
- Use a table for build variables.
- Fix up container PHIDs on diffs (a touch hacky, should be OK for now though).
Test Plan: Browsed around the UI.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T8096
Differential Revision: https://secure.phabricator.com/D13382
Summary:
Ref T8095. Two general problems:
- I want Harbormaster to own all lint and unit test results.
- I don't want users to have to configure anything for `arc` to keep working automatically.
These are in conflict because generic lint/unit test ownership in Harbormaster requires that build targets exist which we can attach build results to. However, we can't currently create build targets on demand: Harbormaster assumes it is responsible for creating targets, then running code or making third-party service calls to actually run the builds.
I considered two broad approaches to let `arc` push results into Harbormaster without requiring administrators to configure some kind of "arc results" build plan:
# Add magic target PHIDs like `PHID-MAGIC-this-is-really-arc-unit`.
# Add new code to build real targets with real PHIDs.
(1) is probably a bit less work to get off the ground, but I think it's worse overall and very likely to create more problems in the long run. I particularly worry that it will lead to a small amount of special casing in a very large number of places, which seems more fragile.
(2) is more work upfront but I think does a better job of putting all the special casing in one place that we can, e.g., more reasonably unit test, and letting the rest of the code rarely/never care about this case since it's just dealing with normal plans/steps/targets as far as it can tell.
This diff introduces "autoplans", which are source templates for plans/steps. This let us "push" these targets into Harbormaster. Hypthetically, any process "like" arc can use autoplans to upload test/lint/etc results. In practice, probably only `arc` will ever use this, but I think it's still quite a bit cleaner than the alternative despite all the generality.
Workflow is basically:
- `arc` creates a diff.
- `arc` calls `harbormaster.queryautotargets`, passing the diff PHID and saying "I have some lint and unit results I want to stick on this thing".
- Harbormaster builds the plan, steps, and targets (if any of them don't already exist), and hands back the target PHIDs so `arc` has a completely standard-looking place to put results.
- `arc` uploads the test results to the right targets, as though Harbormaster had asked it to run unit/lint in the first place.
(This doesn't actually do any of that yet, just sets things up.)
I'll maybe doc turn that ^^^^^^ into a doc for posterity since I think it's hard to guess what an "autotarget" is, but I'm going to grab some lunch first.
Test Plan:
- Added unit tests to make sure we can build these things properly.
- Used `harbormaster.queryautotargets` to build autotargets for a bunch of diffs.
- Verified targets come up in "waiting for message" state.
- Verified plans and steps are not editable.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: hach-que, epriestley
Maniphest Tasks: T8095
Differential Revision: https://secure.phabricator.com/D13345
Summary: Ref T5936. This implements build implementations aborting early when the build has since been restarted. Build steps now periodically poll to see if the build's current generation does not match their generation, and they throw a `HarbormasterBuildAbortedException` if that is the case.
Test Plan: Tested locally on my machine with the sleep build step.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T5936
Differential Revision: https://secure.phabricator.com/D10322
Summary:
Ref T5932. Ref T5936. This implements build generations in Harbormaster, which provides the infrastructure required to both show users the previous states of restarted builds and to allow users to forcefully abort builds (and their targets).
You can view previous generations of a build by adding `?g=<n>` to the URI, but this isn't exposed in the UI anywhere yet.
Test Plan: Ran a build plan with a Sleep step in it. Reconfigured it for various sleep times and viewed previous generations of the build after restarting it.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Maniphest Tasks: T5932, T5936
Differential Revision: https://secure.phabricator.com/D10321
Summary: Resolves T5836. This automatically releases artifacts when Harbormaster builds finish (either passing or failing). This allows Harbormaster to release the Drydock leases it has for hosts.
Test Plan: Tested it with a build plan that passes and fails; tested it with lots of builds running in parallel.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T5836
Differential Revision: https://secure.phabricator.com/D10208
Summary: This makes input artifacts imply the appropriate build step dependencies in the build plan. That is, if you use a host artifact in a build step, it will then implicitly depend on the 'Lease Host' step.
Test Plan: Viewed the build plan with the artifacts, saw the dependencies. Ran a build, saw everything execute in the correct order.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D10089
Summary:
Depends on D9806. This implements the build simulator, which is used to calculate the order of build steps in the plan editor. This includes a migration script to convert existing plans from sequential based to dependency based, and then drops the sequence column.
Because build plans are now dependency based, the grippable and re-order behaviour has been removed.
Test Plan: Tested the migration, saw the dependencies appear correctly.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D9847
Summary: Ref T5655. Some discussion in D9839. Generally speaking, `Phabricator{$name}Application` is clearer than `PhabricatorApplication{$name}`.
Test Plan:
# Pinned and uninstalled some applications.
# Applied patch and performed migrations.
# Verified that the pinned applications were still pinned and that the uninstalled applications were still uninstalled.
# Performed a sanity check on the database contents.
Reviewers: btrahan, epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: hach-que, epriestley, Korvin
Maniphest Tasks: T5655
Differential Revision: https://secure.phabricator.com/D9982
Summary:
Create transaction, editor, etc, and move command generation over to editor.
Show in a timeline in the buildable page.
Also prevent Engine from creating an empty transaction when build starts (Fixes T4885).
Fixes T4886.
Test Plan: Restart builds and buildables, look at timeline.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T4885, T4886
Differential Revision: https://secure.phabricator.com/D9110
Summary:
Fixes T4810. When a buildable completes, make an effort to update the corresponding object with a success or failure message. Commits don't support this yet, but revisions do.
{F144614}
Test Plan:
- Used `bin/harbormaster build` and `bin/harbormaster update` to run a pile of builds.
- Tried good/bad builds.
- Sent some normal mail to make sure the mail reentrancy change didn't break stuff.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4810
Differential Revision: https://secure.phabricator.com/D8803
Summary:
Ref T4809. Currently, buildables have a status field but nothing populates it. Populate it:
- When builds change state, update the Buildable state.
- Use the new Buildable state on the web UI.
- Return the new Buildable state from Conduit.
To make it easier to debug/test this:
- Provide `bin/harbormaster update Bxxx ...` to force foreground update of a Buildable.
Test Plan:
- Used `bin/harbormaster update Bxxx --force --trace` to update buildables.
- Looked at buidlable list, saw statuses reported properly.
- Used Conduit to read statuses.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4809
Differential Revision: https://secure.phabricator.com/D8799
Summary:
This hooks up all the pieces of the build pipeline so `harbormaster.sendmessage` actually works. Particularly:
- Candidate build steps (i.e., those which interact with external systems) can now "Wait for Message". This pauses them indefinitely when they complete, until something calls `harbormaster.sendmessage`.
- After processing a target, we check if we should move it to PASSED or WAITING.
- Before updating a build, we move WAITING targets with pending messages to either PASSED or FAILED.
- I added an explicit "Building" state, which doesn't affect workflows but communicates more information to human users.
A big part of this is avoiding races. I believe we get the correct behavior no matter which order events occur in:
- We update builds after targets complete and after we receive messages, so we're guaranteed to update once both these conditions are true. This means messages can't be lost (even if they arrive before a build completes).
- The minor changes to the build engine logic mean that firing additional build updates is always safe, no matter what the current state of the build is.
- The build itself is protected by a lock in the build engine.
- The target is not covered by an explicit lock, but for all states only the engine (waiting) //or// the worker (all other states) can interact with it. All of the interactions also move the target state forward to the same destination and have no other side effects.
- Messages are only consumed inside the engine lock, so they don't need an explicit lock.
Test Plan:
- Made an HTTP request wait after completion, then ran a pile of builds through it using `bin/harbormaster build` and the web UI.
- Passed and failed message-awaiting builds with `harbormaster.sendmessage`.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley, zeeg
Differential Revision: https://secure.phabricator.com/D8788
Summary: Fixes T4336. This updates the build engine to delete all artifacts when targets are being deleted. This prevents conflicts when builds are restarted.
Test Plan: Restarted a build that had a lease host step and it didn't crash.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Maniphest Tasks: T4336
Differential Revision: https://secure.phabricator.com/D8092
Summary:
Ref T2015. Several fixes:
- `checkForCancellation()` no longer exists, and isn't relevant for resumable stops. Throw it away for now.
- Fix an issue where a build could pass even if the final step failed.
- `phlog()` exceptions so they show up in `bin/harbormaster` and the daemon logs.
- Write an exception log if a step fails.
- Add a "throw an exception" step to debug this stuff more easily.
Test Plan:
- Grepped for `checkForCancellation()`.
- Ran a failing build where the final step caused the failure.
- Observed `phlog()` in `bin/harbormaster` output.
- Observed log in web UI:
{F101168}
Reviewers: btrahan, hach-que
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2015
Differential Revision: https://secure.phabricator.com/D7935
Summary: Ref T1049. The logic in the BuildEngine is a little different from the logic on the Build itself. Make these more consistent, and make queued commands more private.
Test Plan: Restarted, stopped, and resumed a build.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1049
Differential Revision: https://secure.phabricator.com/D7897
Summary:
Ref T1049. Currently you can cancel a build, but now that we're tracking a lot more state we can stop, resume, and restart builds.
When the user issues a command against a build, I'm writing it into an auxiliary queue (`HarbormasterBuildCommand`) and then reading them out in the worker. This is mostly to avoid race messes where we try to `save()` the object in multiple places: basically, the BuildEngine is the //only// thing that writes to Build objects, and it holds a lock while it does it.
Test Plan:
- Created a plan which runs "sleep 2" a bunch of times in a row.
- Stopped, resumed, and restarted it.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, chad
Maniphest Tasks: T1049
Differential Revision: https://secure.phabricator.com/D7892
Summary:
Ref T1049. Currently, the Harbormaster worker looks like this:
foreach (step) {
run_step(step);
}
This means steps can't ever be run in parallel. Instead, split it into two workers. The "Build" worker starts things off, and basically does:
update_build();
(We could theoretically do this in the original process because it should never take very long, but since there's a lock and it's a little bit complex it seemed cleaner to separate it.)
The "Target" worker runs an individual target (like a command, or an HTTP request, or whatever), then updates the build:
run_one_step(step);
update_build();
The new `update_build()` mechanism in `HarbormasterBuildEngine` does this, roughly:
figure_out_overall_status_of_all_steps();
if (build is done) { done(); }
if (build is fail) { fail(); }
foreach (step that is ready to run) {
queue_target_worker_for_step(step);
}
So, overall:
- The part of the code that updates Builds is completely separated from the part of the code that updates Targets.
- Targets can run in parallel.
Test Plan:
- Ran a bunch of builds via `bin/harbormaster build`.
- Ran a bunch of builds via web UI.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1049
Differential Revision: https://secure.phabricator.com/D7890
