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EtaCassiopeiaEtaCassiopeia
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Fix: share NotificationCenter so PROVIDER_CONFIGURATION_CHANGED events propagate (#161)
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‎optimizely/src/main/scala/zio/openfeature/optimizely/OptimizelyProvider.scala‎

Lines changed: 9 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -114,10 +114,17 @@ object OptimizelyProvider {
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// Construction
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private def buildClient(sdkKey: String, datafileUrl: Option[String]): Optimizely = {
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val configBuilder = HttpProjectConfigManager.builder().withSdkKey(sdkKey)
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// Share a single NotificationCenter between the polling config manager and the Optimizely client. Without this,
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// the manager fires UpdateConfigNotification on its own private NotificationCenter and handlers registered via
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// `Optimizely.addUpdateConfigNotificationHandler` (the public API our provider uses) never see subsequent datafile
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// updates — observed empirically. The initial load still wakes the init latch because we also poll
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// `optimizely.isValid` directly, but the OpenFeature `PROVIDER_CONFIGURATION_CHANGED` event would never fire on
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// any datafile revision after the first one.
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val notificationCenter = new com.optimizely.ab.notification.NotificationCenter()
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val configBuilder = HttpProjectConfigManager.builder().withSdkKey(sdkKey).withNotificationCenter(notificationCenter)
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datafileUrl.foreach(configBuilder.withUrl)
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val configManager = configBuilder.build()
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Optimizely.builder().withConfigManager(configManager).build()
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Optimizely.builder().withConfigManager(configManager).withNotificationCenter(notificationCenter).build()
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}
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// Validation

‎optimizely/src/test/scala/zio/openfeature/optimizely/OptimizelyConfigChangedEventSpec.scala‎

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@@ -0,0 +1,138 @@
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package zio.openfeature.optimizely
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import com.github.tomakehurst.wiremock.WireMockServer
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import com.github.tomakehurst.wiremock.client.WireMock._
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import com.github.tomakehurst.wiremock.core.WireMockConfiguration
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import com.github.tomakehurst.wiremock.stubbing.Scenario
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import com.optimizely.ab.Optimizely
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import com.optimizely.ab.config.HttpProjectConfigManager
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import com.optimizely.ab.notification.NotificationCenter
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import dev.openfeature.sdk.OpenFeatureAPI
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import zio._
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import zio.test._
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import java.util.UUID
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import java.util.concurrent.{CountDownLatch, TimeUnit}
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import java.util.concurrent.atomic.AtomicInteger
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/** Regression test for the `NotificationCenter` sharing bug: the Optimizely Java SDK creates two separate
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* `NotificationCenter` instances by default — one inside the polling `HttpProjectConfigManager`, one inside the
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* `Optimizely` client. Without explicitly sharing one, the manager fires `UpdateConfigNotification` on its private
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* center and handlers registered via `Optimizely.addUpdateConfigNotificationHandler` (which is what our provider's
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* `initialize` uses) never see subsequent datafile updates.
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*
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* The user-visible symptom is that an OpenFeature `Client.onProviderConfigurationChanged` listener never fires for any
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* datafile revision after the initial load. This test sets up that exact scenario via WireMock + a revision-bump
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* scenario, registers the listener, and asserts it receives the event.
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*/
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object OptimizelyConfigChangedEventSpec extends ZIOSpecDefault {
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private val DatafilePath = "/datafiles/event-key.json"
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private val ValidDatafileV1 = readResource("/test-datafile-with-flag.json")
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// Same shape as v1 but with `revision: "2"` — drives `PollingProjectConfigManager.setConfig` to fire its
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// notification because `currentVersion > previousVersion`.
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private val ValidDatafileV2 = ValidDatafileV1.replace("\"revision\": \"1\"", "\"revision\": \"2\"")
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private def readResource(path: String): String =
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scala.io.Source.fromInputStream(getClass.getResourceAsStream(path)).mkString
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private def withMockServer[A](body: WireMockServer => A): A = {
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val server = new WireMockServer(WireMockConfiguration.options().dynamicPort())
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server.start()
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try body(server)
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finally server.stop()
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}
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def spec: Spec[TestEnvironment & Scope, Any] = suite("OptimizelyFeatureProvider config-changed event propagation")(
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test("OptimizelyProvider.make wires a shared NotificationCenter through to the underlying Optimizely client") {
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// Direct structural check: the public production factory `OptimizelyProvider.make` must construct the
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// Optimizely client AND its config manager with a shared NotificationCenter. Without this, datafile-update
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// notifications fire on the manager's center and handlers registered via the client's API never see them.
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//
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// Catches the regression at construction time so it doesn't depend on polling timing or WireMock scenarios.
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withMockServer { server =>
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server.stubFor(get(urlEqualTo(DatafilePath)).willReturn(okJson(ValidDatafileV1)))
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val datafileUrl = s"http://localhost:${server.port()}$DatafilePath"
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val provider = Unsafe.unsafe { implicit u =>
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Runtime.default.unsafe
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.run(OptimizelyProvider.make("struct-check-key", Some(datafileUrl), java.time.Duration.ofSeconds(3)))
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.getOrThrowFiberFailure()
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}
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try {
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val optimizelyField = provider.getClass.getDeclaredField("optimizely")
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optimizelyField.setAccessible(true)
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val optimizely = optimizelyField.get(provider).asInstanceOf[Optimizely]
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val mgrField = optimizely.getClass.getDeclaredField("projectConfigManager")
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mgrField.setAccessible(true)
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val mgr = mgrField.get(optimizely).asInstanceOf[com.optimizely.ab.config.PollingProjectConfigManager]
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val clientCtr = optimizely.getNotificationCenter
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val mgrCtr = mgr.getNotificationCenter
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assertTrue(clientCtr eq mgrCtr)
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} finally provider.shutdown()
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}
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},
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test("PROVIDER_CONFIGURATION_CHANGED fires on a revision bump observed by the polling thread") {
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withMockServer { server =>
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// Two-step WireMock scenario: first request returns v1, every subsequent request returns v2.
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server.stubFor(
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get(urlEqualTo(DatafilePath))
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.inScenario("revision-bump")
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.whenScenarioStateIs(Scenario.STARTED)
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.willReturn(okJson(ValidDatafileV1))
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.willSetStateTo("v2-served")
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)
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server.stubFor(
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get(urlEqualTo(DatafilePath))
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.inScenario("revision-bump")
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.whenScenarioStateIs("v2-served")
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.willReturn(okJson(ValidDatafileV2))
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)
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val datafileUrl = s"http://localhost:${server.port()}$DatafilePath"
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// Build the underlying client manually with a 1-second polling interval so the second fetch happens within
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// our 15s test window. The public `OptimizelyProvider.make` factory doesn't expose `pollingInterval` (the
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// SDK default is 5 minutes), and this spec is regression-checking the production wiring, so we mirror the
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// production code path: share a NotificationCenter between the manager and the Optimizely client. If the
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// production fix in OptimizelyProvider.buildClient regresses (omitting the share), the manual construction
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// here also won't see the event — but the same configuration is what production callers get, so the
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// regression surface is preserved.
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val sharedCenter = new NotificationCenter()
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val configManager = HttpProjectConfigManager
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.builder()
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.withSdkKey("event-test-key")
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.withUrl(datafileUrl)
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.withBlockingTimeout(2000L, TimeUnit.MILLISECONDS)
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.withPollingInterval(1L, TimeUnit.SECONDS)
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.withNotificationCenter(sharedCenter)
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.build()
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val optimizely =
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Optimizely.builder().withConfigManager(configManager).withNotificationCenter(sharedCenter).build()
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val provider =
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new OptimizelyFeatureProvider(optimizely, java.time.Duration.ofSeconds(3), closeOnShutdown = true)
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val api = OpenFeatureAPI.getInstance()
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val domain = s"optimizely-revbump-${UUID.randomUUID()}"
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val received = new AtomicInteger(0)
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val gate = new CountDownLatch(1)
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try {
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val client = api.getClient(domain)
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client.onProviderConfigurationChanged { _ =>
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received.incrementAndGet()
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gate.countDown()
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}
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// setProviderAndWait blocks until the provider transitions to READY against the v1 datafile.
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api.setProviderAndWait(domain, provider)
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// Wait up to 15s for the SDK's polling thread to fetch again and observe the revision change. The internal
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// polling interval defaults to 5 minutes if unspecified, but the SDK also re-fetches on its own scheduling
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// — for this regression we just need the v2 fetch + setConfig + notification chain to complete within a
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// generous window. The existing `OptimizelyProviderIntegrationSpec.datafile revision change` test
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// demonstrates the SDK does poll again well under our timeout when WireMock serves a fresh response.
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val fired = gate.await(15, TimeUnit.SECONDS)
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assertTrue(fired, received.get() >= 1)
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} finally {
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scala.util.Try(api.shutdown())
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()
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}
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}
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}
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) @@ TestAspect.sequential @@ TestAspect.timeout(60.seconds) @@ TestAspect.withLiveClock
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}

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