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Step 22 C: the watcher multiplexes the registry

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start takes the served repositories; one poll cycle polls each in its own guard
and aggregates the reports into WatcherState, which gains a per-repository list.
With one repository the top-level fields read exactly as before; with several,
every message is prefixed by the repository name. Log lines carry the name too.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
mhoennig
2026-09-02 09:00:52 +02:00
co-authored by Claude Fable 5.1
parent b16c9c2e27
commit a5027acfaf
4 changed files with 154 additions and 51 deletions
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src/test/kotlin/de/hoennig/werkator/watcher/WatcherTest.kt
+45 -2
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@@ -767,19 +767,62 @@ class WatcherTest : FunSpec() {
Files.exists(busyWorktree).shouldBeTrue()
}
test("one repository's unreachable origin neither stops nor silences the other") {
val harness = Harness()
val otherDir = Files.createTempDirectory("werkator-watcher-other")
val other =
RepoContext(
"other",
otherDir,
FileBuildResultRepository(otherDir.resolve(".git/werkator/build-results.json")),
harness.artifactStore,
)
every { harness.gitService.fetchOrigin(harness.workingDir) } throws RuntimeException("origin unreachable")
every { harness.gitService.originBranches(otherDir) } returns listOf("main")
every { harness.gitService.originBranchHeads(otherDir) } returns mapOf("main" to "commit-other")
every { harness.gitService.localBranches(otherDir) } returns listOf("main")
every { harness.gitService.hasNewCommits("main", otherDir) } returns true
every { harness.gitService.originHeadCommit("main", otherDir) } returns "commit-other"
harness.watcher.pollAll(listOf(harness.repo, other))
verify { harness.buildExecutor.startBuild(other, "main", "commit-other", BuildDefinition.DEFAULT) }
verify(exactly = 0) { harness.buildExecutor.startBuild(harness.repo, any(), any(), any()) }
val state = harness.watcher.state()
state.lastFetchError shouldBe "test: origin unreachable"
state.lastPollError shouldBe null
state.repositories.map { it.name } shouldBe listOf("test", "other")
state.repositories[0].lastFetchError shouldBe "origin unreachable"
state.repositories[1].lastFetchError shouldBe null
}
test("a repository whose poll crashes reports it by name and the cycle goes on") {
val harness = Harness()
val otherDir = Files.createTempDirectory("werkator-watcher-other")
val other = RepoContext("other", otherDir, harness.repository, harness.artifactStore)
every { harness.gitService.originBranches(otherDir) } throws IllegalStateException("corrupt refs")
harness.watcher.pollAll(listOf(harness.repo, other))
val state = harness.watcher.state()
state.lastPollError shouldBe "other: corrupt refs"
state.repositories[1].lastPollError shouldBe "corrupt refs"
state.repositories[0].lastPollError shouldBe null
}
test("start runs recovery plus an immediate first poll; stop halts the loop") {
val harness = Harness()
val fetches = CountDownLatch(2)
every { harness.gitService.fetchOrigin(any()) } answers { fetches.countDown() }
harness.watcher.start(harness.repo)
harness.watcher.start(listOf(harness.repo))
fetches.await(5, TimeUnit.SECONDS).shouldBeTrue()
harness.watcher
.state()
.running
.shouldBeTrue()
shouldThrow<IllegalStateException> { harness.watcher.start(harness.repo) }
shouldThrow<IllegalStateException> { harness.watcher.start(listOf(harness.repo)) }
harness.watcher.stop()