| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.syncope.common.keymaster.client.self; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.CompletionStage; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.client.Entity; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.Response; |
| import org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean; |
| import org.apache.syncope.common.keymaster.client.api.KeymasterException; |
| import org.apache.syncope.common.keymaster.client.api.model.NetworkService; |
| import org.apache.syncope.common.keymaster.client.api.ServiceOps; |
| import org.apache.syncope.common.keymaster.rest.api.service.NetworkServiceService; |
| import org.apache.syncope.common.keymaster.rest.api.service.NetworkServiceService.Action; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.util.backoff.BackOffExecution; |
| import org.springframework.util.backoff.ExponentialBackOff; |
| |
| public class SelfKeymasterServiceOps extends SelfKeymasterOps implements ServiceOps { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ServiceOps.class); |
| |
| private final int maxRetries; |
| |
| private final String path; |
| |
| public SelfKeymasterServiceOps(final JAXRSClientFactoryBean clientFactory, final int maxRetries) { |
| super(clientFactory); |
| this.maxRetries = maxRetries; |
| this.path = NetworkServiceService.class.getAnnotation(Path.class).value(); |
| } |
| |
| @Override |
| public List<NetworkService> list(final NetworkService.Type serviceType) { |
| try { |
| return client(NetworkServiceService.class, Map.of()).list(serviceType); |
| } catch (KeymasterException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new KeymasterException(e); |
| } |
| } |
| |
| @Override |
| public NetworkService get(final NetworkService.Type serviceType) { |
| try { |
| return client(NetworkServiceService.class, Map.of()).get(serviceType); |
| } catch (KeymasterException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new KeymasterException(e); |
| } |
| } |
| |
| private void handleRetry( |
| final NetworkService service, |
| final Action action, |
| final int retries, |
| final BackOffExecution backOffExecution) { |
| |
| try { |
| if (action == Action.register && retries > 0) { |
| long nextBackoff = backOffExecution.nextBackOff(); |
| |
| LOG.debug("Still {} retries available for {}; waiting for {} ms", retries, service, nextBackoff); |
| try { |
| Thread.sleep(nextBackoff); |
| } catch (InterruptedException e) { |
| // ignore |
| } |
| |
| retry(completionStage(action, service), service, action, retries - 1, backOffExecution); |
| } else { |
| LOG.debug("No more retries {} for {}", action, service); |
| } |
| } catch (Throwable t) { |
| LOG.error("Could not continue {} for {}, aborting", action, service, t); |
| } |
| } |
| |
| private void retry( |
| final CompletionStage<Response> completionStage, |
| final NetworkService service, |
| final Action action, |
| final int retries, |
| final BackOffExecution backOffExecution) { |
| |
| completionStage.whenComplete((response, throwable) -> { |
| if (throwable == null && response.getStatus() < 300) { |
| LOG.info("{} successfully " + action + "ed", service); |
| } else { |
| LOG.error("Could not " + action + " {}", service, throwable); |
| |
| handleRetry(service, action, retries, backOffExecution); |
| } |
| }).exceptionally(throwable -> { |
| LOG.error("Could not " + action + " {}", service, throwable); |
| |
| handleRetry(service, action, retries, backOffExecution); |
| |
| return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build(); |
| }); |
| } |
| |
| private CompletionStage<Response> completionStage(final Action action, final NetworkService service) { |
| return rx(path + "?action=" + action.name()).post(Entity.entity(service, MediaType.APPLICATION_JSON)); |
| } |
| |
| @Override |
| public void register(final NetworkService service) { |
| retry(completionStage(Action.register, service), |
| service, Action.register, maxRetries, new ExponentialBackOff(5000L, 1.5).start()); |
| } |
| |
| @Override |
| public void unregister(final NetworkService service) { |
| retry(completionStage(Action.unregister, service), |
| service, Action.unregister, maxRetries, new ExponentialBackOff(5000L, 1.5).start()); |
| } |
| } |