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io.hyscale.deployer.services.handler.impl.V1HorizontalPodAutoScalerHandler Maven / Gradle / Ivy
/**
* Copyright 2019 Pramati Prism, Inc.
*
* 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.
*/
package io.hyscale.deployer.services.handler.impl;
import com.google.common.collect.Lists;
import com.google.gson.JsonSyntaxException;
import io.hyscale.commons.exception.HyscaleException;
import io.hyscale.commons.logger.ActivityContext;
import io.hyscale.commons.logger.WorkflowLogger;
import io.hyscale.commons.models.AnnotationKey;
import io.hyscale.commons.models.Status;
import io.hyscale.commons.utils.GsonProviderUtil;
import io.hyscale.deployer.core.model.ResourceKind;
import io.hyscale.deployer.core.model.ResourceOperation;
import io.hyscale.deployer.services.constants.DeployerConstants;
import io.hyscale.deployer.services.exception.DeployerErrorCodes;
import io.hyscale.deployer.services.handler.ResourceLifeCycleHandler;
import io.hyscale.deployer.services.model.DeployerActivity;
import io.hyscale.deployer.services.util.ExceptionHelper;
import io.hyscale.deployer.services.util.K8sResourcePatchUtil;
import io.kubernetes.client.openapi.ApiClient;
import io.kubernetes.client.openapi.ApiException;
import io.kubernetes.client.openapi.apis.AutoscalingV1Api;
import io.kubernetes.client.openapi.models.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import io.kubernetes.client.custom.V1Patch;
import java.util.List;
/**
* This class is responsible for the lifecycle operations of resource
* HorizontalPodAutoScaler in kubernetes cluster. It creates resource of
* apiVersion: autoscaling/v1
* kind: HorizontalPodAutoScaler
*/
public class V1HorizontalPodAutoScalerHandler implements ResourceLifeCycleHandler {
private static final Logger logger = LoggerFactory.getLogger(V1HorizontalPodAutoScalerHandler.class);
@Override
public V1HorizontalPodAutoscaler create(ApiClient apiClient, V1HorizontalPodAutoscaler resource, String namespace) throws HyscaleException {
if (resource == null) {
logger.debug("Cannot create null HorizontalPodAutoScaler");
return resource;
}
WorkflowLogger.startActivity(DeployerActivity.DEPLOYING_HORIZONTAL_AUTO_SCALER);
AutoscalingV1Api autoscalingV1Api = new AutoscalingV1Api(apiClient);
V1HorizontalPodAutoscaler v1HorizontalPodAutoscaler = null;
try {
resource.getMetadata().putAnnotationsItem(
AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation(), GsonProviderUtil.getPrettyGsonBuilder().toJson(resource));
v1HorizontalPodAutoscaler = autoscalingV1Api.createNamespacedHorizontalPodAutoscaler(namespace, resource, DeployerConstants.TRUE, null, null);
} catch (ApiException e) {
HyscaleException ex = new HyscaleException(e, DeployerErrorCodes.FAILED_TO_CREATE_RESOURCE,
ExceptionHelper.getExceptionMessage(getKind(), e, ResourceOperation.CREATE));
logger.error("Error while creating HorizontalPodAutoScaler {} in namespace {}, error {}", v1HorizontalPodAutoscaler, namespace,
ex.toString());
WorkflowLogger.endActivity(Status.FAILED);
throw ex;
}
WorkflowLogger.endActivity(Status.DONE);
return v1HorizontalPodAutoscaler;
}
@Override
public boolean update(ApiClient apiClient, V1HorizontalPodAutoscaler resource, String namespace) throws HyscaleException {
if (resource == null) {
logger.debug("Cannot update null HorizontalPodAutoScaler");
return false;
}
AutoscalingV1Api autoscalingV1Api = new AutoscalingV1Api(apiClient);
String name = resource.getMetadata().getName();
V1HorizontalPodAutoscaler existingHorizontalPodAutoscaler = null;
try {
existingHorizontalPodAutoscaler = get(apiClient, name, namespace);
} catch (HyscaleException ex) {
logger.debug("Error while getting HorizontalPodAutoScaler {} in namespace {} for Update, creating new", name, namespace);
V1HorizontalPodAutoscaler horizontalPodAutoscaler = create(apiClient, resource, namespace);
return horizontalPodAutoscaler != null;
}
WorkflowLogger.startActivity(DeployerActivity.DEPLOYING_HORIZONTAL_AUTO_SCALER);
try {
String resourceVersion = existingHorizontalPodAutoscaler.getMetadata().getResourceVersion();
resource.getMetadata().setResourceVersion(resourceVersion);
autoscalingV1Api.replaceNamespacedHorizontalPodAutoscaler(name, namespace, resource, DeployerConstants.TRUE, null, null);
} catch (ApiException e) {
HyscaleException ex = new HyscaleException(e, DeployerErrorCodes.FAILED_TO_UPDATE_RESOURCE,
ExceptionHelper.getExceptionMessage(getKind(), e, ResourceOperation.UPDATE));
logger.error("Error while updating HorizontalPodAutoScaler {} in namespace {}, error {}", name, namespace,
ex.toString());
WorkflowLogger.endActivity(Status.FAILED);
throw ex;
}
WorkflowLogger.endActivity(Status.DONE);
return true;
}
@Override
public V1HorizontalPodAutoscaler get(ApiClient apiClient, String name, String namespace) throws HyscaleException {
AutoscalingV1Api autoscalingV1Api = new AutoscalingV1Api(apiClient);
V1HorizontalPodAutoscaler horizontalPodAutoscaler = null;
try {
horizontalPodAutoscaler = autoscalingV1Api.readNamespacedHorizontalPodAutoscaler(name, namespace, DeployerConstants.TRUE, false, false);
} catch (ApiException e) {
HyscaleException ex = ExceptionHelper.buildGetException(getKind(), e, ResourceOperation.GET);
logger.error("Error while fetching HorizontalPodAutoScaler {} in namespace {}, error {} ", name, namespace,
ex.toString());
throw ex;
}
return horizontalPodAutoscaler;
}
@Override
public List getBySelector(ApiClient apiClient, String selector, boolean label, String namespace) throws HyscaleException {
AutoscalingV1Api autoscalingV1Api = new AutoscalingV1Api(apiClient);
List v1HorizontalPodAutoscalers = null;
try {
String labelSelector = label ? selector : null;
String fieldSelector = label ? null : selector;
V1HorizontalPodAutoscalerList v1HorizontalPodAutoscalerList = autoscalingV1Api.listNamespacedHorizontalPodAutoscaler(namespace, DeployerConstants.TRUE,
null, null, fieldSelector, labelSelector, null, null, null, null);
v1HorizontalPodAutoscalers = v1HorizontalPodAutoscalerList != null ? v1HorizontalPodAutoscalerList.getItems() : null;
} catch (ApiException e) {
HyscaleException ex = ExceptionHelper.buildGetException(getKind(), e, ResourceOperation.GET_BY_SELECTOR);
logger.error("Error while listing HorizontalPodAutoScaler in namespace {}, with selectors {}, error {} ", namespace,
selector, ex.toString());
throw ex;
}
return v1HorizontalPodAutoscalers;
}
@Override
public boolean patch(ApiClient apiClient, String name, String namespace, V1HorizontalPodAutoscaler target) throws HyscaleException {
if (target == null) {
logger.debug("Cannot patch null HorizontalPodAutoScaler");
return false;
}
AutoscalingV1Api autoscalingV1Api = new AutoscalingV1Api(apiClient);
target.getMetadata().putAnnotationsItem(AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation(),
GsonProviderUtil.getPrettyGsonBuilder().toJson(target));
V1HorizontalPodAutoscaler sourceHorizontalPodAutoScaler = null;
try {
sourceHorizontalPodAutoScaler = get(apiClient, name, namespace);
} catch (HyscaleException e) {
logger.debug("Error while getting HorizontalPodAutoScaler {} in namespace {} for Patch, creating new", name, namespace);
V1HorizontalPodAutoscaler horizontalPodAutoscaler = create(apiClient, target, namespace);
return horizontalPodAutoscaler != null;
}
WorkflowLogger.startActivity(DeployerActivity.DEPLOYING_HORIZONTAL_AUTO_SCALER);
Object patchObject = null;
String lastAppliedConfig = sourceHorizontalPodAutoScaler.getMetadata().getAnnotations()
.get(AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation());
try {
patchObject = K8sResourcePatchUtil.getJsonPatch(GsonProviderUtil.getPrettyGsonBuilder().fromJson(lastAppliedConfig, V1HorizontalPodAutoscaler.class),
target, V1HorizontalPodAutoscaler.class);
V1Patch v1Patch = new V1Patch(patchObject.toString());
autoscalingV1Api.patchNamespacedHorizontalPodAutoscaler(name, namespace, v1Patch, DeployerConstants.TRUE, null, null, null);
} catch (HyscaleException e) {
logger.error("Error while creating patch for HorizontalPodAutoScaler {}, source {}, target {}", name, sourceHorizontalPodAutoScaler,
target);
WorkflowLogger.endActivity(Status.FAILED);
throw e;
} catch (ApiException e) {
HyscaleException ex = new HyscaleException(e, DeployerErrorCodes.FAILED_TO_PATCH_RESOURCE,
ExceptionHelper.getExceptionMessage(getKind(), e, ResourceOperation.PATCH));
logger.error("Error while patching HorizontalPodAutoScaler {} in namespace {} , error {}", name, namespace,
ex.toString());
WorkflowLogger.endActivity(Status.FAILED);
throw ex;
}
WorkflowLogger.endActivity(Status.DONE);
return true;
}
@Override
public boolean delete(ApiClient apiClient, String name, String namespace, boolean wait) throws HyscaleException {
ActivityContext activityContext = new ActivityContext(DeployerActivity.DELETING_HORIZONTAL_POD_AUTOSCALER);
WorkflowLogger.startActivity(activityContext);
try {
delete(apiClient, name, namespace);
List pendingHPAs = Lists.newArrayList();
pendingHPAs.add(name);
if (wait) {
waitForResourceDeletion(apiClient, pendingHPAs, namespace, activityContext);
}
} catch (ApiException e) {
if (e.getCode() == 404) {
WorkflowLogger.endActivity(activityContext, Status.NOT_FOUND);
return false;
}
HyscaleException ex = new HyscaleException(e, DeployerErrorCodes.FAILED_TO_DELETE_RESOURCE,
ExceptionHelper.getExceptionMessage(getKind(), e, ResourceOperation.DELETE));
logger.error("Error while deleting HorizontalPodAutoScaler {} in namespace {}, error {} ", name, namespace,
ex.toString());
WorkflowLogger.endActivity(activityContext, Status.FAILED);
throw ex;
}
WorkflowLogger.endActivity(activityContext, Status.DONE);
return true;
}
private void delete(ApiClient apiClient, String name, String namespace) throws ApiException {
AutoscalingV1Api autoscalingV1Api = new AutoscalingV1Api(apiClient);
V1DeleteOptions deleteOptions = getDeleteOptions();
deleteOptions.setApiVersion("autoscaling/v1");
try {
autoscalingV1Api.deleteNamespacedHorizontalPodAutoscaler(name, namespace, DeployerConstants.TRUE, null,
null, null, null, deleteOptions);
} catch (JsonSyntaxException e) {
logger.debug("Ignoring delete HorizontalPodAutoScaler exception");
}
}
@Override
public boolean deleteBySelector(ApiClient apiClient, String selector, boolean label, String namespace, boolean wait) throws HyscaleException {
V1DeleteOptions deleteOptions = getDeleteOptions();
deleteOptions.setApiVersion("autoscaling/v1");
try {
List horizontalPodAutoscalerList = getBySelector(apiClient, selector, label, namespace);
if (horizontalPodAutoscalerList == null || horizontalPodAutoscalerList.isEmpty()) {
return false;
}
for (V1HorizontalPodAutoscaler horizontalPodAutoscaler : horizontalPodAutoscalerList) {
delete(apiClient, horizontalPodAutoscaler.getMetadata().getName(), namespace, wait);
}
} catch (HyscaleException e) {
if (DeployerErrorCodes.RESOURCE_NOT_FOUND.equals(e.getHyscaleError())) {
logger.error("Error while deleting HorizontalPodAutoScaler for selector {} in namespace {}, error {}", selector,
namespace, e.toString());
return false;
}
throw e;
}
return true;
}
@Override
public String getKind() {
return ResourceKind.HORIZONTAL_POD_AUTOSCALER.getKind();
}
@Override
public int getWeight() {
return ResourceKind.HORIZONTAL_POD_AUTOSCALER.getWeight();
}
@Override
public boolean cleanUp() {
return true;
}
}
