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/**
* 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 java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.model.ResourceStatus;
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.AppsV1beta2Api;
import io.kubernetes.client.openapi.models.V1DeleteOptions;
import io.kubernetes.client.openapi.models.V1beta2Deployment;
import io.kubernetes.client.openapi.models.V1beta2DeploymentList;
import io.kubernetes.client.openapi.models.V1beta2DeploymentStatus;
import io.kubernetes.client.custom.V1Patch;
public class V1beta2DeploymentHandler implements ResourceLifeCycleHandler {
private static final Logger LOGGER = LoggerFactory.getLogger(V1beta2DeploymentHandler.class);
@Override
public V1beta2Deployment create(ApiClient apiClient, V1beta2Deployment resource, String namespace)
throws HyscaleException {
if (resource == null) {
LOGGER.debug("Cannot create null Deployment");
return resource;
}
WorkflowLogger.startActivity(DeployerActivity.DEPLOYING_DEPLOYMENT);
AppsV1beta2Api appsV1beta2Api = new AppsV1beta2Api(apiClient);
V1beta2Deployment v1beta2Deployment = null;
try {
resource.getMetadata().putAnnotationsItem(
AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation(), GsonProviderUtil.getPrettyGsonBuilder().toJson(resource));
v1beta2Deployment = appsV1beta2Api.createNamespacedDeployment(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 Deployment {} in namespace {}, error {}", v1beta2Deployment, namespace,
ex.toString());
WorkflowLogger.endActivity(Status.FAILED);
throw ex;
}
WorkflowLogger.endActivity(Status.DONE);
return v1beta2Deployment;
}
@Override
public boolean update(ApiClient apiClient, V1beta2Deployment resource, String namespace) throws HyscaleException {
if(resource==null){
LOGGER.debug("Cannot update null Deployment");
return false;
}
AppsV1beta2Api appsV1beta2Api = new AppsV1beta2Api(apiClient);
String name = resource.getMetadata().getName();
V1beta2Deployment existingDeployment = null;
try {
existingDeployment = get(apiClient, name, namespace);
} catch (HyscaleException ex) {
LOGGER.debug("Error while getting Deployment {} in namespace {} for Update, creating new", name, namespace);
V1beta2Deployment deployment = create(apiClient, resource, namespace);
return deployment != null;
}
WorkflowLogger.startActivity(DeployerActivity.DEPLOYING_DEPLOYMENT);
try {
String resourceVersion = existingDeployment.getMetadata().getResourceVersion();
resource.getMetadata().setResourceVersion(resourceVersion);
appsV1beta2Api.replaceNamespacedDeployment(name, namespace, existingDeployment, 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 Deployment {} in namespace {}, error {}", name, namespace,
ex.toString());
WorkflowLogger.endActivity(Status.FAILED);
throw ex;
}
WorkflowLogger.endActivity(Status.DONE);
return true;
}
@Override
public V1beta2Deployment get(ApiClient apiClient, String name, String namespace) throws HyscaleException {
AppsV1beta2Api appsV1beta2Api = new AppsV1beta2Api(apiClient);
V1beta2Deployment v1beta2Deployment = null;
try {
v1beta2Deployment = appsV1beta2Api.readNamespacedDeployment(name, namespace, DeployerConstants.TRUE, false, false);
} catch (ApiException e) {
HyscaleException ex = ExceptionHelper.buildGetException(getKind(), e, ResourceOperation.GET);
LOGGER.error("Error while fetching Deployment {} in namespace {}, error {} ", name, namespace,
ex.toString());
throw ex;
}
return v1beta2Deployment;
}
@Override
public List getBySelector(ApiClient apiClient, String selector, boolean label, String namespace)
throws HyscaleException {
AppsV1beta2Api appsV1beta2Api = new AppsV1beta2Api(apiClient);
List v1beta2Deployments = null;
try {
String labelSelector = label ? selector : null;
String fieldSelector = label ? null : selector;
V1beta2DeploymentList v1beta2DeploymentList = appsV1beta2Api.listNamespacedDeployment(namespace, DeployerConstants.TRUE, null,
null, fieldSelector, labelSelector, null, null, null, null);
v1beta2Deployments = v1beta2DeploymentList != null ? v1beta2DeploymentList.getItems() : null;
} catch (ApiException e) {
HyscaleException ex = ExceptionHelper.buildGetException(getKind(), e, ResourceOperation.GET_BY_SELECTOR);
LOGGER.error("Error while listing Deployments in namespace {}, with selectors {}, error {} ", namespace,
selector, ex.toString());
throw ex;
}
return v1beta2Deployments;
}
@Override
public boolean patch(ApiClient apiClient, String name, String namespace, V1beta2Deployment target)
throws HyscaleException {
if (target == null) {
LOGGER.debug("Cannot patch null Deployment");
return false;
}
AppsV1beta2Api appsV1beta2Api = new AppsV1beta2Api(apiClient);
target.getMetadata().putAnnotationsItem(AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation(),
GsonProviderUtil.getPrettyGsonBuilder().toJson(target));
V1beta2Deployment sourceDeployment = null;
try {
sourceDeployment = get(apiClient, name, namespace);
} catch (HyscaleException e) {
LOGGER.debug("Error while getting Deployment {} in namespace {} for Patch, creating new", name, namespace);
V1beta2Deployment deployment = create(apiClient, target, namespace);
return deployment != null;
}
WorkflowLogger.startActivity(DeployerActivity.DEPLOYING_DEPLOYMENT);
Object patchObject = null;
String lastAppliedConfig = sourceDeployment.getMetadata().getAnnotations()
.get(AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation());
try {
patchObject = K8sResourcePatchUtil.getJsonPatch(GsonProviderUtil.getPrettyGsonBuilder().fromJson(lastAppliedConfig, V1beta2Deployment.class),
target, V1beta2Deployment.class);
V1Patch v1Patch = new V1Patch(patchObject.toString());
appsV1beta2Api.patchNamespacedDeployment(name, namespace, v1Patch, DeployerConstants.TRUE, null, null, null);
} catch (HyscaleException e) {
LOGGER.error("Error while creating patch for Deployment {}, source {}, target {}", name, sourceDeployment,
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 Deployment {} 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_DEPLOYMENT);
WorkflowLogger.startActivity(activityContext);
try {
delete(apiClient, name, namespace);
List pendingDeployments = Lists.newArrayList();
pendingDeployments.add(name);
if (wait) {
waitForResourceDeletion(apiClient, pendingDeployments, 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 Deployment {} 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 {
AppsV1beta2Api appsV1beta2Api = new AppsV1beta2Api(apiClient);
V1DeleteOptions deleteOptions = getDeleteOptions();
deleteOptions.setApiVersion("apps/v1beta2");
try {
appsV1beta2Api.deleteNamespacedDeployment(name, namespace, DeployerConstants.TRUE, null, null, null, null, deleteOptions);
} catch (JsonSyntaxException e) {
// K8s end exception ignore
}
}
@Override
public boolean deleteBySelector(ApiClient apiClient, String selector, boolean label, String namespace, boolean wait)
throws HyscaleException {
V1DeleteOptions deleteOptions = getDeleteOptions();
deleteOptions.setApiVersion("apps/v1beta2");
try {
List deploymentList = getBySelector(apiClient, selector, label, namespace);
if (deploymentList == null || deploymentList.isEmpty()) {
return false;
}
for (V1beta2Deployment deployment : deploymentList) {
delete(apiClient, deployment.getMetadata().getName(), namespace, wait);
}
} catch (HyscaleException e) {
if (DeployerErrorCodes.RESOURCE_NOT_FOUND.equals(e.getHyscaleError())) {
LOGGER.error("Error while deleting deployment for selector {} in namespace {}, error {}", selector,
namespace, e.toString());
return false;
}
throw e;
}
return true;
}
@Override
public String getKind() {
return ResourceKind.DEPLOYMENT.getKind();
}
@Override
public boolean cleanUp() {
return true;
}
@Override
public ResourceStatus status(V1beta2Deployment deployment) {
V1beta2DeploymentStatus deploymentStatus = deployment.getStatus();
if (deploymentStatus == null) {
return ResourceStatus.FAILED;
}
Integer desiredReplicas = deployment.getSpec().getReplicas();
Integer statusReplicas = deploymentStatus.getReplicas();
Integer updatedReplicas = deploymentStatus.getUpdatedReplicas();
Integer availableReplicas = deploymentStatus.getAvailableReplicas();
Integer readyReplicas = deploymentStatus.getReadyReplicas();
if ((desiredReplicas == null || desiredReplicas == 0) && (statusReplicas == null || statusReplicas == 0)) {
return ResourceStatus.STABLE;
}
// pending case
if (updatedReplicas == null || (desiredReplicas != null && desiredReplicas > updatedReplicas)
|| (statusReplicas != null && statusReplicas > updatedReplicas)
|| (availableReplicas == null || availableReplicas < updatedReplicas)
|| (readyReplicas == null || (desiredReplicas != null && desiredReplicas > readyReplicas))) {
return ResourceStatus.PENDING;
}
return ResourceStatus.STABLE;
}
@Override
public int getWeight() {
return ResourceKind.DEPLOYMENT.getWeight();
}
}