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17 changes: 17 additions & 0 deletions
17
alerting/src/main/kotlin/org/opensearch/alerting/event/listener/AlertingEventListener.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
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| package org.opensearch.alerting.event.listener | ||
|
|
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| import org.opensearch.client.node.NodeClient | ||
| import org.opensearch.commons.alerting.model.Finding | ||
| import org.opensearch.commons.authuser.User | ||
|
|
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| interface AlertingEventListener { | ||
|
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| suspend fun onAdCallbackCalled(client: NodeClient, monitorId: String, user: User?) | ||
|
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| fun onFindingCreated(client: NodeClient, monitorId: String, finding: Finding) | ||
| } |
65 changes: 65 additions & 0 deletions
65
...ing/src/main/kotlin/org/opensearch/alerting/event/listener/AlertingEventListenerModule.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
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| package org.opensearch.alerting.event.listener | ||
|
|
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| import org.apache.logging.log4j.LogManager | ||
| import org.opensearch.common.settings.Settings | ||
| import org.opensearch.threadpool.ThreadPool | ||
| import java.lang.IllegalStateException | ||
| import java.util.concurrent.atomic.AtomicBoolean | ||
|
|
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| private val log = LogManager.getLogger(AlertingEventListenerModule::class.java) | ||
|
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| class AlertingEventListenerModule( | ||
| val alertingEventListeners: MutableMap<String, MutableSet<String>> = mutableMapOf(), | ||
| var frozen: AtomicBoolean = AtomicBoolean(false), | ||
| var eventListener: AlertingEventListener? = null, | ||
| val settings: Settings, | ||
| val threadPool: ThreadPool | ||
| ) { | ||
|
|
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| public fun addEventListener(listener: String?, topic: String) { | ||
| ensureNotFrozen() | ||
| if (listener == null) { | ||
| throw IllegalArgumentException("listener must not be null") | ||
| } | ||
| if (alertingEventListeners.contains(topic)) { | ||
| if (alertingEventListeners[topic]!!.contains(listener)) { | ||
| throw IllegalArgumentException("listener already added for topic") | ||
| } else { | ||
| alertingEventListeners[topic]!!.add(listener) | ||
| } | ||
| } else { | ||
| alertingEventListeners[topic] = mutableSetOf(listener) | ||
| } | ||
| } | ||
|
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| public fun eventListener(): AlertingEventListener { | ||
| if (!isFrozen()) { | ||
| ensureNotFrozen() | ||
| eventListener = freeze() | ||
| } | ||
| return eventListener!! | ||
| } | ||
|
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| private fun freeze(): CompositeAlertingEventListener { | ||
| if (this.frozen.compareAndSet(false, true)) { | ||
| return CompositeAlertingEventListener(alertingEventListeners, settings, threadPool) | ||
| } else { | ||
| throw IllegalStateException("already frozen") | ||
| } | ||
| } | ||
|
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| private fun ensureNotFrozen() { | ||
| if (this.frozen.get()) { | ||
| throw IllegalArgumentException("Can't modify AlertingEventListenerModule once Alerting callbacks are frozen") | ||
| } | ||
| } | ||
|
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| private fun isFrozen(): Boolean { | ||
| return frozen.get() | ||
| } | ||
| } |
71 changes: 71 additions & 0 deletions
71
.../src/main/kotlin/org/opensearch/alerting/event/listener/CompositeAlertingEventListener.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
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| package org.opensearch.alerting.event.listener | ||
|
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| import org.apache.logging.log4j.LogManager | ||
| import org.opensearch.action.ActionType | ||
| import org.opensearch.alerting.opensearchapi.InjectorContextElement | ||
| import org.opensearch.alerting.opensearchapi.withClosableContext | ||
| import org.opensearch.client.node.NodeClient | ||
| import org.opensearch.common.settings.Settings | ||
| import org.opensearch.commons.alerting.AlertingPluginInterface | ||
| import org.opensearch.commons.alerting.action.PublishAdRequest | ||
| import org.opensearch.commons.alerting.action.PublishFindingsRequest | ||
| import org.opensearch.commons.alerting.action.SubscribeAdResponse | ||
| import org.opensearch.commons.alerting.action.SubscribeFindingsResponse | ||
| import org.opensearch.commons.alerting.model.Finding | ||
| import org.opensearch.commons.authuser.User | ||
| import org.opensearch.core.action.ActionListener | ||
| import org.opensearch.threadpool.ThreadPool | ||
|
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| private val log = LogManager.getLogger(CompositeAlertingEventListener::class.java) | ||
|
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| class CompositeAlertingEventListener( | ||
| val topics: MutableMap<String, MutableSet<String>>, | ||
| val settings: Settings, | ||
| val threadPool: ThreadPool | ||
| ) : AlertingEventListener { | ||
|
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| override suspend fun onAdCallbackCalled(client: NodeClient, monitorId: String, user: User?) { | ||
| val listeners = topics["onAdCallbackCalled"] | ||
| listeners?.forEach { listener -> | ||
| val SUBSCRIBE_AD_ACTION_TYPE = ActionType(listener, ::SubscribeAdResponse) | ||
| val request = PublishAdRequest(monitorId) | ||
|
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| withClosableContext(InjectorContextElement(monitorId, settings, threadPool.threadContext, user!!.roles, user)) { | ||
| AlertingPluginInterface.publishAdRequest( | ||
| client, | ||
| SUBSCRIBE_AD_ACTION_TYPE, | ||
| request, | ||
| object : ActionListener<SubscribeAdResponse> { | ||
| override fun onResponse(response: SubscribeAdResponse) {} | ||
|
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| override fun onFailure(e: Exception) {} | ||
| } | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
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| override fun onFindingCreated(client: NodeClient, monitorId: String, finding: Finding) { | ||
| val listeners = topics["onFindingCreated"] | ||
| listeners?.forEach { listener -> | ||
| val SUBSCRIBE_FINDINGS_ACTION_TYPE = ActionType(listener, ::SubscribeFindingsResponse) | ||
| val request = PublishFindingsRequest(monitorId, finding) | ||
|
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| AlertingPluginInterface.publishFinding( | ||
| client, | ||
| SUBSCRIBE_FINDINGS_ACTION_TYPE, | ||
| request, | ||
| object : ActionListener<SubscribeFindingsResponse> { | ||
| override fun onResponse(response: SubscribeFindingsResponse) {} | ||
|
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| override fun onFailure(e: Exception) {} | ||
| } | ||
| ) | ||
| } | ||
| } | ||
| } |
42 changes: 42 additions & 0 deletions
42
...ting/src/main/kotlin/org/opensearch/alerting/transport/TransportAddEventListenerAction.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
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| package org.opensearch.alerting.transport | ||
|
|
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| import org.apache.logging.log4j.LogManager | ||
| import org.opensearch.action.ActionRequest | ||
| import org.opensearch.action.support.ActionFilters | ||
| import org.opensearch.action.support.HandledTransportAction | ||
| import org.opensearch.alerting.event.listener.AlertingEventListenerModule | ||
| import org.opensearch.client.Client | ||
| import org.opensearch.common.inject.Inject | ||
| import org.opensearch.commons.alerting.action.AlertingActions | ||
| import org.opensearch.commons.alerting.action.EventListenerRequest | ||
| import org.opensearch.commons.alerting.action.EventListenerResponse | ||
| import org.opensearch.commons.utils.recreateObject | ||
| import org.opensearch.core.action.ActionListener | ||
| import org.opensearch.tasks.Task | ||
| import org.opensearch.transport.TransportService | ||
|
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| private val log = LogManager.getLogger(TransportAddEventListenerAction::class.java) | ||
|
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| class TransportAddEventListenerAction @Inject constructor( | ||
| transportService: TransportService, | ||
| val client: Client, | ||
| actionFilters: ActionFilters, | ||
| val eventListenerModule: AlertingEventListenerModule | ||
| ) : HandledTransportAction<ActionRequest, EventListenerResponse>( | ||
| AlertingActions.EVENT_LISTENER_ACTION_NAME, transportService, actionFilters, | ||
| ::EventListenerRequest | ||
| ) { | ||
|
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| override fun doExecute(task: Task, request: ActionRequest, listener: ActionListener<EventListenerResponse>) { | ||
| log.info("hit here- TransportAddEventListenerAction") | ||
| val transformedRequest = request as? EventListenerRequest | ||
| ?: recreateObject(request) { EventListenerRequest(it) } | ||
| eventListenerModule.addEventListener(transformedRequest.listener, transformedRequest.topic) | ||
| listener.onResponse(EventListenerResponse()) | ||
| } | ||
| } |
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