diff options
author | 2018-08-08 09:17:14 +0200 | |
---|---|---|
committer | 2018-08-09 10:46:48 +0200 | |
commit | 67702df781ab8acab8cd7375c0ce5ee91fc3debe (patch) | |
tree | d4323f6567e23d156ebfa754fd5aa6aeac5eb64a /hv-collector-health-check/src | |
parent | dd827e2c1cc984d9ed1fed9914cbef0e985ea625 (diff) |
Implement simple health check mechanism
Change-Id: Ic4b8b59ced9dc19c9ebf26131036a9e1a752164f
Issue-ID: DCAEGEN2-659
Signed-off-by: Jakub Dudycz <jakub.dudycz@nokia.com>
Diffstat (limited to 'hv-collector-health-check/src')
-rw-r--r-- | hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthCheckApiServer.kt (renamed from hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/http/HealthCheckApiServer.kt) | 13 | ||||
-rw-r--r-- | hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt | 34 | ||||
-rw-r--r-- | hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStateProvider.kt | 39 | ||||
-rw-r--r-- | hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImpl.kt | 39 | ||||
-rw-r--r-- | hv-collector-health-check/src/test/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImplTest.kt | 54 |
5 files changed, 175 insertions, 4 deletions
diff --git a/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/http/HealthCheckApiServer.kt b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthCheckApiServer.kt index 9cab031a..b21d1871 100644 --- a/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/http/HealthCheckApiServer.kt +++ b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthCheckApiServer.kt @@ -17,21 +17,24 @@ * limitations under the License. * ============LICENSE_END========================================================= */ -package org.onap.dcae.collectors.veshv.healthcheck.http +package org.onap.dcae.collectors.veshv.healthcheck.api import arrow.effects.IO import ratpack.handling.Chain -import ratpack.http.Status import ratpack.server.RatpackServer import ratpack.server.ServerConfig +import java.util.concurrent.atomic.AtomicReference /** * @author Jakub Dudycz <jakub.dudycz@nokia.com> * @since August 2018 */ -class HealthCheckApiServer { +class HealthCheckApiServer(private val healthStateProvider: HealthStateProvider) { + + private val healthState: AtomicReference<HealthState> = AtomicReference(HealthState.STARTING) fun start(port: Int): IO<RatpackServer> = IO { + healthStateProvider().subscribe(healthState::set) RatpackServer .start { it @@ -43,7 +46,9 @@ class HealthCheckApiServer { private fun configureHandlers(chain: Chain) { chain .get("healthcheck") { ctx -> - ctx.response.status(Status.OK).send() + healthState.get().run { + ctx.response.status(responseCode).send(message) + } } } }
\ No newline at end of file diff --git a/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt new file mode 100644 index 00000000..3dddf1e7 --- /dev/null +++ b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt @@ -0,0 +1,34 @@ +/* + * ============LICENSE_START======================================================= + * dcaegen2-collectors-veshv + * ================================================================================ + * Copyright (C) 2018 NOKIA + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.veshv.healthcheck.api + +import org.onap.dcae.collectors.veshv.utils.http.Status.Companion.OK +import org.onap.dcae.collectors.veshv.utils.http.Status.Companion.SERVICE_UNAVAILABLE + +/** + * @author Jakub Dudycz <jakub.dudycz@nokia.com> + * @since August 2018 + */ +enum class HealthState(val message: String, val responseCode: Int) { + HEALTHY("Healthy", OK), + STARTING("Collector is starting", SERVICE_UNAVAILABLE), + WAITING_FOR_CONSUL_CONFIGURATION("Waiting for consul configuration", SERVICE_UNAVAILABLE), + CONSUL_CONFIGURATION_NOT_FOUND("Consul configuration not found", SERVICE_UNAVAILABLE) +} diff --git a/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStateProvider.kt b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStateProvider.kt new file mode 100644 index 00000000..5cc09ccc --- /dev/null +++ b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStateProvider.kt @@ -0,0 +1,39 @@ +/* + * ============LICENSE_START======================================================= + * dcaegen2-collectors-veshv + * ================================================================================ + * Copyright (C) 2018 NOKIA + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.veshv.healthcheck.api + +import org.onap.dcae.collectors.veshv.healthcheck.impl.HealthStateProviderImpl +import reactor.core.publisher.Flux + +/** + * @author Jakub Dudycz <jakub.dudycz@nokia.com> + * @since August 2018 + */ +interface HealthStateProvider { + + operator fun invoke(): Flux<HealthState> + fun changeState(healthState: HealthState) + + companion object { + val INSTANCE: HealthStateProvider by lazy { + HealthStateProviderImpl() + } + } +} diff --git a/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImpl.kt b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImpl.kt new file mode 100644 index 00000000..5056d2da --- /dev/null +++ b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImpl.kt @@ -0,0 +1,39 @@ +/* + * ============LICENSE_START======================================================= + * dcaegen2-collectors-veshv + * ================================================================================ + * Copyright (C) 2018 NOKIA + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.veshv.healthcheck.impl + +import org.onap.dcae.collectors.veshv.healthcheck.api.HealthStateProvider +import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState +import reactor.core.publisher.Flux +import reactor.core.publisher.FluxProcessor +import reactor.core.publisher.UnicastProcessor + +/** + * @author Jakub Dudycz <jakub.dudycz@nokia.com> + * @since August 2018 + */ +internal class HealthStateProviderImpl : HealthStateProvider { + + private val healthStateStream: FluxProcessor<HealthState, HealthState> = UnicastProcessor.create() + + override fun invoke(): Flux<HealthState> = healthStateStream + + override fun changeState(healthState: HealthState) = healthStateStream.onNext(healthState) +} diff --git a/hv-collector-health-check/src/test/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImplTest.kt b/hv-collector-health-check/src/test/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImplTest.kt new file mode 100644 index 00000000..e9c487bf --- /dev/null +++ b/hv-collector-health-check/src/test/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateProviderImplTest.kt @@ -0,0 +1,54 @@ +/* + * ============LICENSE_START======================================================= + * dcaegen2-collectors-veshv + * ================================================================================ + * Copyright (C) 2018 NOKIA + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.veshv.healthcheck.impl + +import org.jetbrains.spek.api.Spek +import org.jetbrains.spek.api.dsl.describe +import org.jetbrains.spek.api.dsl.given +import org.jetbrains.spek.api.dsl.it +import org.jetbrains.spek.api.dsl.on +import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState +import reactor.test.StepVerifier + +/** + * @author Jakub Dudycz <jakub.dudycz@nokia.com> + * @since August 2018 + */ +object HealthStateProviderImplTest : Spek({ + describe("Health state provider") { + val healthStateProviderImpl = HealthStateProviderImpl() + on("health state update") { + healthStateProviderImpl.changeState(HealthState.HEALTHY) + healthStateProviderImpl.changeState(HealthState.WAITING_FOR_CONSUL_CONFIGURATION) + healthStateProviderImpl.changeState(HealthState.WAITING_FOR_CONSUL_CONFIGURATION) + healthStateProviderImpl.changeState(HealthState.CONSUL_CONFIGURATION_NOT_FOUND) + + it("should push new health state to the subscriber") { + StepVerifier + .create(healthStateProviderImpl().take(4)) + .expectNext(HealthState.HEALTHY) + .expectNext(HealthState.WAITING_FOR_CONSUL_CONFIGURATION) + .expectNext(HealthState.WAITING_FOR_CONSUL_CONFIGURATION) + .expectNext(HealthState.CONSUL_CONFIGURATION_NOT_FOUND) + .verifyComplete() + } + } + } +})
\ No newline at end of file |