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Added changes for AdmissionControl Interceptor and AdmissionControlSe…
…rvice for RateLimiting (opensearch-project#9286) * Changes for AdmissionControl Interceptor and AdmissionControlService for RateLimiting (opensearch-project#9286) Signed-off-by: Ajay Kumar Movva <[email protected]>
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104 changes: 104 additions & 0 deletions
104
.../src/main/java/org/opensearch/ratelimitting/admissioncontrol/AdmissionControlService.java
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/* | ||
* 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. | ||
*/ | ||
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package org.opensearch.ratelimitting.admissioncontrol; | ||
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import org.apache.logging.log4j.LogManager; | ||
import org.apache.logging.log4j.Logger; | ||
import org.opensearch.common.settings.ClusterSettings; | ||
import org.opensearch.common.settings.Settings; | ||
import org.opensearch.ratelimitting.admissioncontrol.controllers.AdmissionController; | ||
import org.opensearch.ratelimitting.admissioncontrol.controllers.CPUBasedAdmissionController; | ||
import org.opensearch.threadpool.ThreadPool; | ||
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import java.util.ArrayList; | ||
import java.util.List; | ||
import java.util.concurrent.ConcurrentHashMap; | ||
import java.util.concurrent.ConcurrentMap; | ||
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import static org.opensearch.ratelimitting.admissioncontrol.settings.CPUBasedAdmissionControllerSettings.CPU_BASED_ADMISSION_CONTROLLER; | ||
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/** | ||
* Admission control Service that bootstraps and manages all the Admission Controllers in OpenSearch. | ||
*/ | ||
public class AdmissionControlService { | ||
private final ThreadPool threadPool; | ||
public final AdmissionControlSettings admissionControlSettings; | ||
private final ConcurrentMap<String, AdmissionController> ADMISSION_CONTROLLERS; | ||
private static final Logger logger = LogManager.getLogger(AdmissionControlService.class); | ||
private final ClusterSettings clusterSettings; | ||
private final Settings settings; | ||
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/** | ||
* | ||
* @param settings Immutable settings instance | ||
* @param clusterSettings ClusterSettings Instance | ||
* @param threadPool ThreadPool Instance | ||
*/ | ||
public AdmissionControlService(Settings settings, ClusterSettings clusterSettings, ThreadPool threadPool) { | ||
this.threadPool = threadPool; | ||
this.admissionControlSettings = new AdmissionControlSettings(clusterSettings, settings); | ||
this.ADMISSION_CONTROLLERS = new ConcurrentHashMap<>(); | ||
this.clusterSettings = clusterSettings; | ||
this.settings = settings; | ||
this.initialise(); | ||
} | ||
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/** | ||
* Initialise and Register all the admissionControllers | ||
*/ | ||
private void initialise() { | ||
// Initialise different type of admission controllers | ||
registerAdmissionController(CPU_BASED_ADMISSION_CONTROLLER); | ||
} | ||
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/** | ||
* Handler to trigger registered admissionController | ||
*/ | ||
public void applyTransportAdmissionControl(String action) { | ||
this.ADMISSION_CONTROLLERS.forEach((name, admissionController) -> { admissionController.apply(action); }); | ||
} | ||
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/** | ||
* | ||
* @param admissionControllerName admissionControllerName to register into the service. | ||
*/ | ||
public void registerAdmissionController(String admissionControllerName) { | ||
AdmissionController admissionController = this.controllerFactory(admissionControllerName); | ||
this.ADMISSION_CONTROLLERS.put(admissionControllerName, admissionController); | ||
} | ||
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/** | ||
* @return AdmissionController Instance | ||
*/ | ||
private AdmissionController controllerFactory(String admissionControllerName) { | ||
switch (admissionControllerName) { | ||
case CPU_BASED_ADMISSION_CONTROLLER: | ||
return new CPUBasedAdmissionController(admissionControllerName, this.settings, this.clusterSettings); | ||
default: | ||
throw new IllegalArgumentException("Not Supported AdmissionController : " + admissionControllerName); | ||
} | ||
} | ||
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/** | ||
* | ||
* @return list of the registered admissionControllers | ||
*/ | ||
public List<AdmissionController> getAdmissionControllers() { | ||
return new ArrayList<>(this.ADMISSION_CONTROLLERS.values()); | ||
} | ||
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/** | ||
* | ||
* @param controllerName name of the admissionController | ||
* @return instance of the AdmissionController Instance | ||
*/ | ||
public AdmissionController getAdmissionController(String controllerName) { | ||
return this.ADMISSION_CONTROLLERS.getOrDefault(controllerName, null); | ||
} | ||
} |
83 changes: 83 additions & 0 deletions
83
...src/main/java/org/opensearch/ratelimitting/admissioncontrol/AdmissionControlSettings.java
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/* | ||
* 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. | ||
*/ | ||
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package org.opensearch.ratelimitting.admissioncontrol; | ||
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import org.opensearch.common.settings.ClusterSettings; | ||
import org.opensearch.common.settings.Setting; | ||
import org.opensearch.common.settings.Settings; | ||
import org.opensearch.ratelimitting.admissioncontrol.enums.AdmissionControlMode; | ||
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/** | ||
* Settings related to admission control. | ||
* @opensearch.internal | ||
*/ | ||
public final class AdmissionControlSettings { | ||
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/** | ||
* Default parameters for the AdmissionControlSettings | ||
*/ | ||
public static class Defaults { | ||
public static final String MODE = "disabled"; | ||
} | ||
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/** | ||
* Feature level setting to operate in shadow-mode or in enforced-mode. If enforced field is set | ||
* rejection will be performed, otherwise only rejection metrics will be populated. | ||
*/ | ||
public static final Setting<AdmissionControlMode> ADMISSION_CONTROL_TRANSPORT_LAYER_MODE = new Setting<>( | ||
"admission_control.transport.mode", | ||
Defaults.MODE, | ||
AdmissionControlMode::fromName, | ||
Setting.Property.Dynamic, | ||
Setting.Property.NodeScope | ||
); | ||
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private volatile AdmissionControlMode transportLayeradmissionControlMode; | ||
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/** | ||
* @param clusterSettings clusterSettings Instance | ||
* @param settings settings instance | ||
*/ | ||
public AdmissionControlSettings(ClusterSettings clusterSettings, Settings settings) { | ||
this.transportLayeradmissionControlMode = ADMISSION_CONTROL_TRANSPORT_LAYER_MODE.get(settings); | ||
clusterSettings.addSettingsUpdateConsumer(ADMISSION_CONTROL_TRANSPORT_LAYER_MODE, this::setAdmissionControlTransportLayerMode); | ||
} | ||
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/** | ||
* | ||
* @param admissionControlMode update the mode of admission control feature | ||
*/ | ||
private void setAdmissionControlTransportLayerMode(AdmissionControlMode admissionControlMode) { | ||
this.transportLayeradmissionControlMode = admissionControlMode; | ||
} | ||
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/** | ||
* | ||
* @return return the default mode of the admissionControl | ||
*/ | ||
public AdmissionControlMode getAdmissionControlTransportLayerMode() { | ||
return this.transportLayeradmissionControlMode; | ||
} | ||
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/** | ||
* | ||
* @return true based on the admission control feature is enforced else false | ||
*/ | ||
public Boolean isTransportLayerAdmissionControlEnforced() { | ||
return this.transportLayeradmissionControlMode == AdmissionControlMode.ENFORCED; | ||
} | ||
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/** | ||
* | ||
* @return true based on the admission control feature is enabled else false | ||
*/ | ||
public Boolean isTransportLayerAdmissionControlEnabled() { | ||
return this.transportLayeradmissionControlMode != AdmissionControlMode.DISABLED; | ||
} | ||
} |
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