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io.hyscale.deployer.services.client.K8sResourceClient 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.client;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import io.hyscale.commons.exception.HyscaleException;
import io.hyscale.commons.models.AnnotationKey;
import io.hyscale.commons.utils.GsonProviderUtil;
import io.hyscale.commons.utils.ThreadPoolUtil;
import io.hyscale.deployer.services.constants.DeployerConstants;
import io.hyscale.deployer.services.exception.DeployerErrorCodes;
import io.hyscale.deployer.services.model.CustomListObject;
import io.hyscale.deployer.services.model.CustomObject;
import io.hyscale.deployer.services.util.K8sResourcePatchUtil;
import io.kubernetes.client.custom.V1Patch;
import io.kubernetes.client.openapi.ApiClient;
import io.kubernetes.client.util.generic.KubernetesApiResponse;
import io.kubernetes.client.util.generic.options.DeleteOptions;
import io.kubernetes.client.util.generic.options.ListOptions;
public class K8sResourceClient extends GenericK8sClient {
private static final Logger logger = LoggerFactory.getLogger(K8sResourceClient.class);
private static final String annotations = "annotations";
public K8sResourceClient(ApiClient apiClient) {
super(apiClient);
}
@Override
public void create(CustomObject resource) throws HyscaleException {
if(resource == null){
return;
}
String kind = resource.getKind();
String name = resource.getMetadata().getName();
Map metaMap = (Map) resource.get("metadata");
if(metaMap.get(annotations) == null){
metaMap.put(annotations,new HashMap());
}
Map annotationsMap = (Map) metaMap.get(K8sResourceClient.annotations);
annotationsMap.put(AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation(),
GsonProviderUtil.getPrettyGsonBuilder().toJson(resource));
KubernetesApiResponse response = genericClient.create(resource);
if(response!=null){
if(response.isSuccess()){
logger.info("Successfully created resource : {}, name : {} ",kind,name);
return;
}else{
logger.error("Failed to create, reason: {}\n Message: {}",response.getStatus().getReason(),response.getStatus().getMessage());
}
}
throw new HyscaleException(DeployerErrorCodes.FAILED_TO_CREATE_RESOURCE);
}
@Override
public void update(CustomObject resource) throws HyscaleException {
if(resource == null){
return;
}
String kind = resource.getKind();
String name = resource.getMetadata().getName();
Map metaMap = (Map) resource.get("metadata");
if(metaMap.get(annotations) == null){
metaMap.put(annotations,new HashMap());
}
Map annotationsMap = (Map) metaMap.get(K8sResourceClient.annotations);
annotationsMap.put(AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation(),
GsonProviderUtil.getPrettyGsonBuilder().toJson(resource));
KubernetesApiResponse response = genericClient.update(resource);
if(response!=null){
if(response.isSuccess()){
logger.info("Successfully updated resource : {} name : {}",kind,name);
return;
}else{
logger.error("Failed to update, reason: {}\n Message: {}",response.getStatus().getReason(),response.getStatus().getMessage());
}
}
throw new HyscaleException(DeployerErrorCodes.FAILED_TO_CREATE_RESOURCE);
}
@Override
public boolean patch(CustomObject resource) {
if(resource == null){
return false;
}
String kind = resource.getKind();
String name = resource.getMetadata().getName();
CustomObject customObject = get(resource);
if(customObject != null && customObject.getMetadata() != null && customObject.getMetadata().getAnnotations() != null){
String lastAppliedConfig = customObject.getMetadata().getAnnotations()
.get(AnnotationKey.K8S_HYSCALE_LAST_APPLIED_CONFIGURATION.getAnnotation());
Object patchObject = null;
try {
patchObject = K8sResourcePatchUtil.getJsonPatch(GsonProviderUtil.getPrettyGsonBuilder().fromJson(lastAppliedConfig, CustomObject.class),
resource, CustomObject.class);
V1Patch v1Patch = new V1Patch(patchObject.toString());
KubernetesApiResponse response = genericClient.patch(name,null,v1Patch);
if(response!=null){
if(response.isSuccess()){
logger.info("Successfully patched resource {}",kind);
return true;
}else{
logger.error("Failed to patch, reason: {}\n Message: {}",response.getStatus().getReason(),response.getStatus().getMessage());
}
}
} catch (Exception e) {
logger.error("Error while creating patch for resource kind : {}, name : {}, error : {}", kind,
name, e.toString());
return false;
}
}
return false;
}
@Override
public boolean delete(CustomObject resource) {
if(resource == null){
return false;
}
String kind = resource.getKind();
String name = resource.getMetadata().getName();
DeleteOptions deleteOptions = new DeleteOptions();
deleteOptions.setKind("DeleteOptions");
deleteOptions.setApiVersion("v1");
deleteOptions.setPropagationPolicy("Foreground");
KubernetesApiResponse response = genericClient.delete(namespace,name, deleteOptions);
if(response!=null){
if(response.isSuccess()){
logger.info("Successfully deleted resource : {}, name : {}",kind,name);
waitForResourceDeletion(resource);
return true;
}else{
logger.error("Failed to delete resource {} \nReason : {}",kind,response.getStatus().getReason());
}
}
return false;
}
private void waitForResourceDeletion(CustomObject resource) {
if(resource == null){
return;
}
long startTime = System.currentTimeMillis();
while((System.currentTimeMillis() - startTime < DeployerConstants.MAX_WAIT_TIME_IN_MILLISECONDS)){
CustomObject customObject = get(resource);
if(customObject == null){ return; }
logger.debug("Resource {} found to be existing, waiting for resource deletion", resource);
ThreadPoolUtil.sleepSilently(DeployerConstants.DELETE_SLEEP_INTERVAL_IN_MILLIS);
}
}
@Override
public CustomObject get(CustomObject resource) {
if(resource == null){
return null;
}
logger.debug("Fetching {}",resource.getKind());
if(resource.getMetadata() != null){
String name = resource.getMetadata().getName();
return getResourceByName(name);
}
return null;
}
@Override
public CustomObject getResourceByName(String name) {
if(name == null || name.isBlank()){
return null;
}
KubernetesApiResponse response = genericClient.get(namespace,name);
if(response != null && response.getObject()!=null){
return response.getObject();
}
return null;
}
@Override
public List getAll(){
KubernetesApiResponse response = genericClient.list(namespace);
if(response!=null){
return response.getObject().getItems();
}
return Collections.emptyList();
}
@Override
public List getBySelector(String selector) {
ListOptions listOptions = new ListOptions();
listOptions.setLabelSelector(selector);
KubernetesApiResponse response = genericClient.list(namespace,listOptions);
if(response!=null){
return response.getObject().getItems();
}
return Collections.emptyList();
}
}
