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175 changes: 175 additions & 0 deletions
175
common/lib/plugins/efm2/host_monitoring2_connection_plugin.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| /* | ||
| Copyright 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. | ||
| 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. | ||
| */ | ||
|
|
||
| import { PluginService } from "../../plugin_service"; | ||
| import { HostChangeOptions } from "../../host_change_options"; | ||
| import { HostInfo } from "../../host_info"; | ||
| import { OldConnectionSuggestionAction } from "../../old_connection_suggestion_action"; | ||
| import { RdsUtils } from "../../utils/rds_utils"; | ||
| import { AbstractConnectionPlugin } from "../../abstract_connection_plugin"; | ||
| import { RdsUrlType } from "../../utils/rds_url_type"; | ||
| import { WrapperProperties } from "../../wrapper_property"; | ||
| import { MonitorConnectionContext } from "./monitor_connection_context"; | ||
| import { logger, uniqueId } from "../../../logutils"; | ||
| import { Messages } from "../../utils/messages"; | ||
| import { MonitorService, MonitorServiceImpl } from "./monitor_service"; | ||
| import { AwsWrapperError } from "../../utils/errors"; | ||
| import { HostListProvider } from "../../host_list_provider/host_list_provider"; | ||
| import { CanReleaseResources } from "../../can_release_resources"; | ||
| import { SubscribedMethodHelper } from "../../utils/subscribed_method_helper"; | ||
| import { ClientWrapper } from "../../client_wrapper"; | ||
|
|
||
| export class HostMonitoring2ConnectionPlugin extends AbstractConnectionPlugin implements CanReleaseResources { | ||
| id: string = uniqueId("_efm2Plugin"); | ||
| private readonly properties: Map<string, any>; | ||
| private pluginService: PluginService; | ||
| private rdsUtils: RdsUtils; | ||
| private monitoringHostInfo: HostInfo | null = null; | ||
| private monitorService: MonitorService; | ||
|
|
||
| constructor(pluginService: PluginService, properties: Map<string, any>, rdsUtils: RdsUtils = new RdsUtils(), monitorService?: MonitorServiceImpl) { | ||
| super(); | ||
| this.pluginService = pluginService; | ||
| this.properties = properties; | ||
| this.rdsUtils = rdsUtils; | ||
| this.monitorService = monitorService ?? new MonitorServiceImpl(pluginService); | ||
| } | ||
|
|
||
| getSubscribedMethods(): Set<string> { | ||
| return new Set<string>(["*"]); | ||
| } | ||
|
|
||
| connect( | ||
| hostInfo: HostInfo, | ||
| props: Map<string, any>, | ||
| isInitialConnection: boolean, | ||
| connectFunc: () => Promise<ClientWrapper> | ||
| ): Promise<ClientWrapper> { | ||
| return this.connectInternal(hostInfo, connectFunc); | ||
| } | ||
|
|
||
| forceConnect( | ||
| hostInfo: HostInfo, | ||
| props: Map<string, any>, | ||
| isInitialConnection: boolean, | ||
| forceConnectFunc: () => Promise<ClientWrapper> | ||
| ): Promise<ClientWrapper> { | ||
| return this.connectInternal(hostInfo, forceConnectFunc); | ||
| } | ||
|
|
||
| private async connectInternal(hostInfo: HostInfo, connectFunc: () => Promise<ClientWrapper>): Promise<ClientWrapper> { | ||
| const targetClient = await connectFunc(); | ||
| if (targetClient != null) { | ||
| const type: RdsUrlType = this.rdsUtils.identifyRdsType(hostInfo.host); | ||
| if (type.isRdsCluster) { | ||
| hostInfo.resetAliases(); | ||
| await this.pluginService.fillAliases(targetClient, hostInfo); | ||
| } | ||
| } | ||
| return targetClient; | ||
| } | ||
|
|
||
| async execute<T>(methodName: string, methodFunc: () => Promise<T>, methodArgs: any): Promise<T> { | ||
| const isEnabled: boolean = WrapperProperties.FAILURE_DETECTION_ENABLED.get(this.properties); | ||
|
|
||
| if (!isEnabled || !SubscribedMethodHelper.NETWORK_BOUND_METHODS.includes(methodName)) { | ||
| return methodFunc(); | ||
| } | ||
|
|
||
| const failureDetectionTimeMillis: number = WrapperProperties.FAILURE_DETECTION_TIME_MS.get(this.properties); | ||
| const failureDetectionIntervalMillis: number = WrapperProperties.FAILURE_DETECTION_INTERVAL_MS.get(this.properties); | ||
| const failureDetectionCount: number = WrapperProperties.FAILURE_DETECTION_COUNT.get(this.properties); | ||
|
|
||
| let result: T; | ||
| let monitorContext: MonitorConnectionContext | null = null; | ||
|
|
||
| try { | ||
| logger.debug(Messages.get("HostMonitoringConnectionPlugin.activatedMonitoring", methodName)); | ||
| const monitoringHostInfo: HostInfo = await this.getMonitoringHostInfo(); | ||
|
|
||
| monitorContext = await this.monitorService.startMonitoring( | ||
| this.pluginService.getCurrentClient().targetClient, | ||
| monitoringHostInfo, | ||
| this.properties, | ||
| failureDetectionTimeMillis, | ||
| failureDetectionIntervalMillis, | ||
| failureDetectionCount | ||
| ); | ||
|
|
||
| result = await methodFunc(); | ||
| } finally { | ||
| if (monitorContext != null) { | ||
| await this.monitorService.stopMonitoring(monitorContext, this.pluginService.getCurrentClient().targetClient); | ||
|
|
||
| logger.debug(Messages.get("HostMonitoringConnectionPlugin.monitoringDeactivated", methodName)); | ||
| } | ||
| } | ||
|
|
||
| return result; | ||
| } | ||
|
|
||
| private throwUnableToIdentifyConnection(host: HostInfo | null): never { | ||
| const provider: HostListProvider | null = this.pluginService.getHostListProvider(); | ||
| throw new AwsWrapperError( | ||
| Messages.get( | ||
| "HostMonitoringConnectionPlugin.unableToIdentifyConnection", | ||
| host !== null ? host.host : "unknown host", | ||
| provider !== null ? provider.getHostProviderType() : "unknown provider" | ||
| ) | ||
| ); | ||
| } | ||
|
|
||
| async getMonitoringHostInfo(): Promise<HostInfo> { | ||
| if (this.monitoringHostInfo === null) { | ||
| this.monitoringHostInfo = this.pluginService.getCurrentHostInfo(); | ||
| if (this.monitoringHostInfo === null) { | ||
| this.throwUnableToIdentifyConnection(null); | ||
| } | ||
| const rdsUrlType: RdsUrlType = this.rdsUtils.identifyRdsType(this.monitoringHostInfo.url); | ||
|
|
||
| try { | ||
| if (rdsUrlType.isRdsCluster) { | ||
| logger.debug(Messages.get("HostMonitoringConnectionPlugin.identifyClusterConnection")); | ||
| this.monitoringHostInfo = await this.pluginService.identifyConnection(this.pluginService.getCurrentClient().targetClient!); | ||
| if (this.monitoringHostInfo == null) { | ||
| const host: HostInfo | null = this.pluginService.getCurrentHostInfo(); | ||
| this.throwUnableToIdentifyConnection(host); | ||
| } | ||
| await this.pluginService.fillAliases(this.pluginService.getCurrentClient().targetClient!, this.monitoringHostInfo); | ||
| } | ||
| } catch (error: any) { | ||
| if (!(error instanceof AwsWrapperError)) { | ||
| logger.debug(Messages.get("HostMonitoringConnectionPlugin.errorIdentifyingConnection", error.message)); | ||
| } | ||
| throw error; | ||
| } | ||
| } | ||
|
|
||
| return this.monitoringHostInfo; | ||
| } | ||
|
|
||
| async notifyConnectionChanged(changes: Set<HostChangeOptions>): Promise<OldConnectionSuggestionAction> { | ||
| if (changes.has(HostChangeOptions.HOSTNAME) || changes.has(HostChangeOptions.HOST_CHANGED)) { | ||
| // Reset monitoring host info since the associated connection has changed. | ||
| this.monitoringHostInfo = null; | ||
| } | ||
| return OldConnectionSuggestionAction.NO_OPINION; | ||
| } | ||
|
|
||
| async releaseResources(): Promise<void> { | ||
| return this.monitorService.releaseResources(); | ||
| } | ||
| } |
37 changes: 37 additions & 0 deletions
37
common/lib/plugins/efm2/host_monitoring2_plugin_factory.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| /* | ||
| Copyright 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. | ||
| 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. | ||
| */ | ||
|
|
||
| import { ConnectionPluginFactory } from "../../plugin_factory"; | ||
| import { PluginService } from "../../plugin_service"; | ||
| import { ConnectionPlugin } from "../../connection_plugin"; | ||
| import { RdsUtils } from "../../utils/rds_utils"; | ||
| import { AwsWrapperError } from "../../utils/errors"; | ||
| import { Messages } from "../../utils/messages"; | ||
|
|
||
| export class HostMonitoring2PluginFactory extends ConnectionPluginFactory { | ||
| private static hostMonitoring2Plugin: any; | ||
|
|
||
| async getInstance(pluginService: PluginService, properties: Map<string, any>): Promise<ConnectionPlugin> { | ||
| try { | ||
| if (!HostMonitoring2PluginFactory.hostMonitoring2Plugin) { | ||
| HostMonitoring2PluginFactory.hostMonitoring2Plugin = await import("./host_monitoring2_connection_plugin"); | ||
| } | ||
| return new HostMonitoring2PluginFactory.hostMonitoring2Plugin.HostMonitoring2ConnectionPlugin(pluginService, properties, new RdsUtils()); | ||
| } catch (error: any) { | ||
| throw new AwsWrapperError(Messages.get("ConnectionPluginChainBuilder.errorImportingPlugin", error.message, "HostMonitoringPlugin")); | ||
| } | ||
| } | ||
| } |
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