diff options
Diffstat (limited to 'sources/hv-collector-health-check/src/main')
5 files changed, 206 insertions, 0 deletions
diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthDescription.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthDescription.kt new file mode 100644 index 00000000..8c69406c --- /dev/null +++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthDescription.kt @@ -0,0 +1,32 @@ +/* + * ============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 + + +/** + * @author Jakub Dudycz <jakub.dudycz@nokia.com> + * @since August 2018 + */ +enum class HealthDescription(val message: String, val status: HealthStatus) { + HEALTHY("Healthy", HealthStatus.UP), + STARTING("Collector is starting", HealthStatus.OUT_OF_SERVICE), + RETRYING_FOR_CONSUL_CONFIGURATION("Consul configuration not available. Retrying.", HealthStatus.OUT_OF_SERVICE), + CONSUL_CONFIGURATION_NOT_FOUND("Consul configuration not found", HealthStatus.DOWN) +} diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.kt new file mode 100644 index 00000000..853cc00f --- /dev/null +++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthState.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.HealthStateImpl +import reactor.core.publisher.Flux + +/** + * @author Jakub Dudycz <jakub.dudycz@nokia.com> + * @since August 2018 + */ +interface HealthState { + + operator fun invoke(): Flux<HealthDescription> + fun changeState(healthDescription: HealthDescription) + + companion object { + val INSTANCE: HealthState by lazy { + HealthStateImpl() + } + } +} diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStatus.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStatus.kt new file mode 100644 index 00000000..1adf0cad --- /dev/null +++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/api/HealthStatus.kt @@ -0,0 +1,33 @@ +/* + * ============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.HttpStatus + +/** + * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com> + * @since August 2018 + */ +enum class HealthStatus(val httpResponseStatus: HttpStatus) { + UP(HttpStatus.OK), + DOWN(HttpStatus.SERVICE_UNAVAILABLE), + OUT_OF_SERVICE(HttpStatus.SERVICE_UNAVAILABLE), + UNKNOWN(HttpStatus.SERVICE_UNAVAILABLE) +} diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/factory/HealthCheckApiServer.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/factory/HealthCheckApiServer.kt new file mode 100644 index 00000000..f12d9acf --- /dev/null +++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/factory/HealthCheckApiServer.kt @@ -0,0 +1,63 @@ +/* + * ============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.factory + +import arrow.effects.IO +import io.netty.handler.codec.http.HttpResponseStatus +import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription +import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState +import org.onap.dcae.collectors.veshv.utils.NettyServerHandle +import org.onap.dcae.collectors.veshv.utils.ServerHandle +import reactor.core.publisher.Flux +import reactor.core.publisher.Mono +import reactor.netty.http.server.HttpServer +import reactor.netty.http.server.HttpServerRequest +import reactor.netty.http.server.HttpServerResponse +import java.net.SocketAddress +import java.util.concurrent.atomic.AtomicReference + +/** + * @author Jakub Dudycz <jakub.dudycz@nokia.com> + * @since August 2018 + */ +class HealthCheckApiServer(private val healthState: HealthState, + private val listenAddress: SocketAddress) { + + private val healthDescription: AtomicReference<HealthDescription> = AtomicReference(HealthDescription.STARTING) + + fun start(): IO<ServerHandle> = IO { + healthState().subscribe(healthDescription::set) + val ctx = HttpServer.create() + .tcpConfiguration { it.addressSupplier { listenAddress } } + .route { routes -> + routes.get("/health/ready", ::readinessHandler) + routes.get("/health/alive", ::livenessHandler) + } + NettyServerHandle(ctx.bindNow()) + } + + private fun readinessHandler(_req: HttpServerRequest, resp: HttpServerResponse) = + healthDescription.get().run { + resp.status(status.httpResponseStatus.number).sendString(Flux.just(status.toString(), "\n", message)) + } + + private fun livenessHandler(_req: HttpServerRequest, resp: HttpServerResponse) = + resp.status(HttpResponseStatus.NOT_IMPLEMENTED).sendString(Mono.just("Not implemented yet")) +} diff --git a/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateImpl.kt b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateImpl.kt new file mode 100644 index 00000000..c273f0a0 --- /dev/null +++ b/sources/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/impl/HealthStateImpl.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.HealthState +import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription +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 HealthStateImpl : HealthState { + + private val healthDescriptionStream: FluxProcessor<HealthDescription, HealthDescription> = UnicastProcessor.create() + + override fun invoke(): Flux<HealthDescription> = healthDescriptionStream + + override fun changeState(healthDescription: HealthDescription) = healthDescriptionStream.onNext(healthDescription) +} |