Notification plugin interface and models

[Tests]
Contains unit test for all model classes

Signed-off-by: @akbhatta

detekt.yml

@@ -20,4 +20,12 @@ style:
     max: 10
   ReturnCount:
     active: true
-    max: 10
+    max: 10
+
+complexity:
+  LargeClass:
+    excludes: ['**/test/**']
+  LongMethod:
+    excludes: ['**/test/**']
+  LongParameterList:
+    excludes: ['**/test/**']

src/main/kotlin/org/opensearch/commons/notifications/NotificationConstants.kt

@@ -0,0 +1,67 @@
+package org.opensearch.commons.notifications
+
+/**
+ * Class containing Internal constants like JSON tags and defaults.
+ */
+object NotificationConstants {
+    const val CONFIG_ID_TAG = "config_id"
+    const val CONFIG_ID_LIST_TAG = "config_id_list"
+    const val EVENT_ID_TAG = "event_id"
+    const val EVENT_ID_LIST_TAG = "event_id_list"
+    const val EMAIL_ACCOUNT_ID_TAG = "email_account_id"
+    const val REFERENCE_ID_TAG = "reference_id"
+    const val CHANNEL_ID_LIST_TAG = "channel_id_list"
+    const val CONFIG_NAME_TAG = "config_name"
+    const val CONFIG_TYPE_TAG = "config_type"
+    const val CONFIG_TAG = "config"
+    const val EVENT_TAG = "event"
+    const val EVENT_SOURCE_TAG = "event_source"
+    const val FEATURE_TAG = "feature"
+    const val THREAD_CONTEXT_TAG = "context"
+    const val CHANNEL_MESSAGE_TAG = "channel_message"
+    const val TEXT_DESCRIPTION_TAG = "text_description"
+    const val HTML_DESCRIPTION_TAG = "html_description"
+    const val ATTACHMENT_TAG = "attachment"
+    const val RECIPIENT_TAG = "recipient"
+    const val RECIPIENT_LIST_TAG = "recipient_list"
+    const val EMAIL_RECIPIENT_STATUS_TAG = "email_recipient_status"
+    const val EMAIL_GROUP_ID_LIST_TAG = "email_group_id_list"
+    const val STATUS_CODE_TAG = "status_code"
+    const val STATUS_TEXT_TAG = "status_text"
+    const val DELIVERY_STATUS_TAG = "delivery_status"
+    const val NAME_TAG = "name"
+    const val DESCRIPTION_TAG = "description"
+    const val IS_ENABLED_TAG = "is_enabled"
+    const val FEATURE_LIST_TAG = "feature_list"
+    const val TITLE_TAG = "title"
+    const val SEVERITY_TAG = "severity"
+    const val TAGS_TAG = "tags"
+    const val URL_TAG = "url"
+    const val HEADER_PARAMS_TAG = "header_params"
+    const val HOST_TAG = "host"
+    const val PORT_TAG = "port"
+    const val METHOD_TAG = "method"
+    const val FROM_ADDRESS_TAG = "from_address"
+    const val UPDATED_TIME_TAG = "last_updated_time_ms"
+    const val CREATED_TIME_TAG = "created_time_ms"
+    const val TENANT_TAG = "tenant"
+    const val CONFIG_LIST_TAG = "config_list"
+    const val EVENT_LIST_TAG = "event_list"
+    const val FEATURE_CONFIG_LIST_TAG = "feature_channel_list"
+    const val DELETE_RESPONSE_LIST_TAG = "delete_response_list"
+    const val FROM_INDEX_TAG = "from_index"
+    const val MAX_ITEMS_TAG = "max_items"
+    const val SORT_FIELD_TAG = "sort_field"
+    const val SORT_ORDER_TAG = "sort_order"
+    const val FILTER_PARAM_LIST_TAG = "filter_param_list"
+    const val STATUS_LIST_TAG = "status_list"
+    const val START_INDEX_TAG = "start_index"
+    const val TOTAL_HITS_TAG = "total_hits"
+    const val TOTAL_HIT_RELATION_TAG = "total_hit_relation"
+    const val QUERY_TAG = "query"
+    const val COMPACT_TAG = "compact"
+    const val CONFIG_TYPE_LIST_TAG = "config_type_list"
+    const val PLUGIN_FEATURES_TAG = "plugin_features"
+
+    const val DEFAULT_MAX_ITEMS = 1000
+}

src/main/kotlin/org/opensearch/commons/notifications/NotificationsPluginInterface.kt

@@ -0,0 +1,215 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+/*
+ * Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * or in the "license" file accompanying this file. This file 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.
+ *
+ */
+package org.opensearch.commons.notifications
+
+import org.opensearch.action.ActionListener
+import org.opensearch.client.node.NodeClient
+import org.opensearch.commons.ConfigConstants.OPENSEARCH_SECURITY_USER_INFO_THREAD_CONTEXT
+import org.opensearch.commons.notifications.action.CreateNotificationConfigRequest
+import org.opensearch.commons.notifications.action.CreateNotificationConfigResponse
+import org.opensearch.commons.notifications.action.DeleteNotificationConfigRequest
+import org.opensearch.commons.notifications.action.DeleteNotificationConfigResponse
+import org.opensearch.commons.notifications.action.GetFeatureChannelListRequest
+import org.opensearch.commons.notifications.action.GetFeatureChannelListResponse
+import org.opensearch.commons.notifications.action.GetNotificationConfigRequest
+import org.opensearch.commons.notifications.action.GetNotificationConfigResponse
+import org.opensearch.commons.notifications.action.GetNotificationEventRequest
+import org.opensearch.commons.notifications.action.GetNotificationEventResponse
+import org.opensearch.commons.notifications.action.GetPluginFeaturesRequest
+import org.opensearch.commons.notifications.action.GetPluginFeaturesResponse
+import org.opensearch.commons.notifications.action.NotificationsActions.CREATE_NOTIFICATION_CONFIG_ACTION_TYPE
+import org.opensearch.commons.notifications.action.NotificationsActions.DELETE_NOTIFICATION_CONFIG_ACTION_TYPE
+import org.opensearch.commons.notifications.action.NotificationsActions.GET_FEATURE_CHANNEL_LIST_ACTION_TYPE
+import org.opensearch.commons.notifications.action.NotificationsActions.GET_NOTIFICATION_CONFIG_ACTION_TYPE
+import org.opensearch.commons.notifications.action.NotificationsActions.GET_NOTIFICATION_EVENT_ACTION_TYPE
+import org.opensearch.commons.notifications.action.NotificationsActions.GET_PLUGIN_FEATURES_ACTION_TYPE
+import org.opensearch.commons.notifications.action.NotificationsActions.SEND_NOTIFICATION_ACTION_TYPE
+import org.opensearch.commons.notifications.action.NotificationsActions.UPDATE_NOTIFICATION_CONFIG_ACTION_TYPE
+import org.opensearch.commons.notifications.action.SendNotificationRequest
+import org.opensearch.commons.notifications.action.SendNotificationResponse
+import org.opensearch.commons.notifications.action.UpdateNotificationConfigRequest
+import org.opensearch.commons.notifications.action.UpdateNotificationConfigResponse
+import org.opensearch.commons.notifications.model.ChannelMessage
+import org.opensearch.commons.notifications.model.EventSource
+import org.opensearch.commons.utils.SecureClientWrapper
+
+/**
+ * All the transport action plugin interfaces for the Notification plugin
+ */
+object NotificationsPluginInterface {
+
+    /**
+     * Create notification configuration.
+     * @param client Node client for making transport action
+     * @param request The request object
+     * @param listener The listener for getting response
+     */
+    fun createNotificationConfig(
+        client: NodeClient,
+        request: CreateNotificationConfigRequest,
+        listener: ActionListener<CreateNotificationConfigResponse>
+    ) {
+        client.execute(
+            CREATE_NOTIFICATION_CONFIG_ACTION_TYPE,
+            request,
+            listener
+        )
+    }
+
+    /**
+     * Update notification configuration.
+     * @param client Node client for making transport action
+     * @param request The request object
+     * @param listener The listener for getting response
+     */
+    fun updateNotificationConfig(
+        client: NodeClient,
+        request: UpdateNotificationConfigRequest,
+        listener: ActionListener<UpdateNotificationConfigResponse>
+    ) {
+        client.execute(
+            UPDATE_NOTIFICATION_CONFIG_ACTION_TYPE,
+            request,
+            listener
+        )
+    }
+
+    /**
+     * Delete notification configuration.
+     * @param client Node client for making transport action
+     * @param request The request object
+     * @param listener The listener for getting response
+     */
+    fun deleteNotificationConfig(
+        client: NodeClient,
+        request: DeleteNotificationConfigRequest,
+        listener: ActionListener<DeleteNotificationConfigResponse>
+    ) {
+        client.execute(
+            DELETE_NOTIFICATION_CONFIG_ACTION_TYPE,
+            request,
+            listener
+        )
+    }
+
+    /**
+     * Get notification configuration.
+     * @param client Node client for making transport action
+     * @param request The request object
+     * @param listener The listener for getting response
+     */
+    fun getNotificationConfig(
+        client: NodeClient,
+        request: GetNotificationConfigRequest,
+        listener: ActionListener<GetNotificationConfigResponse>
+    ) {
+        client.execute(
+            GET_NOTIFICATION_CONFIG_ACTION_TYPE,
+            request,
+            listener
+        )
+    }
+
+    /**
+     * Get notification events.
+     * @param client Node client for making transport action
+     * @param request The request object
+     * @param listener The listener for getting response
+     */
+    fun getNotificationEvent(
+        client: NodeClient,
+        request: GetNotificationEventRequest,
+        listener: ActionListener<GetNotificationEventResponse>
+    ) {
+        client.execute(
+            GET_NOTIFICATION_EVENT_ACTION_TYPE,
+            request,
+            listener
+        )
+    }
+
+    /**
+     * Get notification plugin features.
+     * @param client Node client for making transport action
+     * @param request The request object
+     * @param listener The listener for getting response
+     */
+    fun getPluginFeatures(
+        client: NodeClient,
+        request: GetPluginFeaturesRequest,
+        listener: ActionListener<GetPluginFeaturesResponse>
+    ) {
+        client.execute(
+            GET_PLUGIN_FEATURES_ACTION_TYPE,
+            request,
+            listener
+        )
+    }
+
+    /**
+     * Get notification channel configuration enabled for a feature.
+     * @param client Node client for making transport action
+     * @param request The request object
+     * @param listener The listener for getting response
+     */
+    fun getFeatureChannelList(
+        client: NodeClient,
+        request: GetFeatureChannelListRequest,
+        listener: ActionListener<GetFeatureChannelListResponse>
+    ) {
+        client.execute(
+            GET_FEATURE_CHANNEL_LIST_ACTION_TYPE,
+            request,
+            listener
+        )
+    }
+
+    /**
+     * Send notification API enabled for a feature. No REST API. Internal API only for Inter plugin communication.
+     * @param client Node client for making transport action
+     * @param eventSource The notification event information
+     * @param channelMessage The notification message
+     * @param channelIds The list of channel ids to send message to.
+     * @param listener The listener for getting response
+     */
+    fun sendNotification(
+        client: NodeClient,
+        eventSource: EventSource,
+        channelMessage: ChannelMessage,
+        channelIds: List<String>,
+        listener: ActionListener<SendNotificationResponse>
+    ) {
+        val threadContext: String? =
+            client.threadPool().threadContext.getTransient<String>(OPENSEARCH_SECURITY_USER_INFO_THREAD_CONTEXT)
+        val wrapper = SecureClientWrapper(client) // Executing request in privileged mode
+        wrapper.execute(
+            SEND_NOTIFICATION_ACTION_TYPE,
+            SendNotificationRequest(eventSource, channelMessage, channelIds, threadContext),
+            listener
+        )
+    }
+}

src/main/kotlin/org/opensearch/commons/notifications/action/BaseResponse.kt

@@ -0,0 +1,59 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+/*
+ * Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * or in the "license" file accompanying this file. This file 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.
+ *
+ */
+
+package org.opensearch.commons.notifications.action
+
+import org.opensearch.action.ActionResponse
+import org.opensearch.common.io.stream.StreamInput
+import org.opensearch.common.xcontent.ToXContentObject
+import org.opensearch.rest.RestStatus
+import java.io.IOException
+
+/**
+ * Base response which give REST status.
+ */
+abstract class BaseResponse : ActionResponse, ToXContentObject {
+
+    /**
+     * constructor for creating the class
+     */
+    constructor()
+
+    /**
+     * {@inheritDoc}
+     */
+    @Throws(IOException::class)
+    constructor(input: StreamInput) : super(input)
+
+    /**
+     * get rest status for the response. Useful override for multi-status response.
+     * @return RestStatus for the response
+     */
+    open fun getStatus(): RestStatus {
+        return RestStatus.OK
+    }
+}