Java tutorial
package com.thinkbiganalytics.feedmgr.sla; /*- * #%L * thinkbig-feed-manager-controller * %% * Copyright (C) 2017 ThinkBig Analytics * %% * 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. * #L% */ import com.google.common.base.Function; import com.google.common.collect.Collections2; import com.google.common.collect.Lists; import com.thinkbiganalytics.feedmgr.rest.Model; import com.thinkbiganalytics.feedmgr.security.FeedServicesAccessControl; import com.thinkbiganalytics.metadata.api.feed.security.FeedAccessControl; import com.thinkbiganalytics.metadata.rest.model.feed.Feed; import com.thinkbiganalytics.metadata.rest.model.sla.FeedServiceLevelAgreement; import com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreementCheck; import com.thinkbiganalytics.metadata.sla.api.MetricAssessment; import com.thinkbiganalytics.metadata.sla.api.Obligation; import com.thinkbiganalytics.metadata.sla.api.ObligationAssessment; import com.thinkbiganalytics.metadata.sla.api.ObligationGroup; import com.thinkbiganalytics.metadata.sla.api.ServiceLevelAgreement; import com.thinkbiganalytics.metadata.sla.api.ServiceLevelAssessment; import com.thinkbiganalytics.metadata.sla.spi.ObligationBuilder; import com.thinkbiganalytics.metadata.sla.spi.ObligationGroupBuilder; import com.thinkbiganalytics.metadata.sla.spi.ServiceLevelAgreementBuilder; import com.thinkbiganalytics.metadata.sla.spi.ServiceLevelAgreementProvider; import com.thinkbiganalytics.security.AccessController; import org.apache.commons.lang3.StringUtils; import org.apache.commons.lang3.exception.ExceptionUtils; import java.util.ArrayList; import java.util.Collection; import java.util.List; import java.util.Set; import java.util.stream.Collectors; import javax.annotation.Nonnull; import javax.inject.Inject; /** * Transforms to/from Domain/Rest */ public class ServiceLevelAgreementModelTransform { @Inject private AccessController accessController; public static final Function<ServiceLevelAgreement, com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement> DOMAIN_TO_SLA = new Function<ServiceLevelAgreement, com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement>() { @Override public com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement apply( ServiceLevelAgreement domain) { return toModel(domain, true); } }; public static final Function<ServiceLevelAssessment, com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment> DOMAIN_TO_SLA_ASSMT = new Function<ServiceLevelAssessment, com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment>() { @Override public com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment apply( ServiceLevelAssessment domain) { com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement sla = toModel(domain.getAgreement(), false); com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment slAssmt = new com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment( sla, domain.getTime(), // null, domain.getMessage(), com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment.Result .valueOf(domain.getResult().name())); for (ObligationAssessment domainObAssmt : domain.getObligationAssessments()) { com.thinkbiganalytics.metadata.rest.model.sla.ObligationAssessment obAssmt = new com.thinkbiganalytics.metadata.rest.model.sla.ObligationAssessment( toModel(domainObAssmt.getObligation(), false), com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment.Result .valueOf(domain.getResult().name()), domainObAssmt.getMessage()); for (MetricAssessment<?> domainMetAssmt : domainObAssmt.getMetricAssessments()) { com.thinkbiganalytics.metadata.rest.model.sla.MetricAssessment metricAssmnt = new com.thinkbiganalytics.metadata.rest.model.sla.MetricAssessment( domainMetAssmt.getMetric(), com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAssessment.Result .valueOf(domain.getResult().name()), domainMetAssmt.getMessage()); obAssmt.addMetricAssessment(metricAssmnt); } slAssmt.addObligationAssessment(obAssmt); } return slAssmt; } }; public static ServiceLevelAgreement generateDomain( com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement model, ServiceLevelAgreementProvider provider) { ServiceLevelAgreementBuilder slaBldr = provider.builder().name(model.getName()) .description(model.getDescription()); for (com.thinkbiganalytics.metadata.rest.model.sla.ObligationGroup grp : model.getGroups()) { ObligationGroupBuilder grpBldr = slaBldr .obligationGroupBuilder(ObligationGroup.Condition.valueOf(grp.getCondition())); for (com.thinkbiganalytics.metadata.rest.model.sla.Obligation ob : grp.getObligations()) { ObligationBuilder<?> obBldr = grpBldr.obligationBuilder().description(ob.getDescription()); for (com.thinkbiganalytics.metadata.sla.api.Metric metric : ob.getMetrics()) { obBldr.metric(metric); } obBldr.build(); } grpBldr.build(); } return slaBldr.build(); } public static com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement toModel( ServiceLevelAgreement domain, boolean deep) { com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement sla = new com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement( domain.getId().toString(), domain.getName(), domain.getDescription()); if (domain.getSlaChecks() != null) { List<ServiceLevelAgreementCheck> checks = new ArrayList<>(); sla.setSlaChecks(checks); for (com.thinkbiganalytics.metadata.sla.spi.ServiceLevelAgreementCheck check : domain.getSlaChecks()) { ServiceLevelAgreementCheck restModel = new ServiceLevelAgreementCheck(); restModel.setCronSchedule(check.getCronSchedule()); if (deep) { try { restModel.setActionConfigurations(check.getActionConfigurations()); } catch (Exception e) { if (ExceptionUtils.getRootCause(e) instanceof ClassNotFoundException) { String msg = ExceptionUtils.getRootCauseMessage(e); //get just the simpleClassName stripping the package info msg = StringUtils.substringAfterLast(msg, "."); sla.addSlaCheckError("Unable to find the SLA Action Configurations of type: " + msg + ". Check with an administrator to ensure the correct plugin is installed with this SLA configuration. "); } else { throw new RuntimeException(e); } } } checks.add(restModel); } } if (deep) { if (domain.getObligationGroups().size() == 1 && domain.getObligationGroups().get(0).getCondition() == ObligationGroup.Condition.REQUIRED) { for (Obligation domainOb : domain.getObligations()) { com.thinkbiganalytics.metadata.rest.model.sla.Obligation ob = toModel(domainOb, true); sla.addObligation(ob); } } else { for (ObligationGroup domainGroup : domain.getObligationGroups()) { com.thinkbiganalytics.metadata.rest.model.sla.ObligationGroup group = new com.thinkbiganalytics.metadata.rest.model.sla.ObligationGroup( domainGroup.getCondition().toString()); for (Obligation domainOb : domainGroup.getObligations()) { com.thinkbiganalytics.metadata.rest.model.sla.Obligation ob = toModel(domainOb, true); group.addObligation(ob); } sla.addGroup(group); } } } return sla; } public static com.thinkbiganalytics.metadata.rest.model.sla.Obligation toModel(Obligation domainOb, boolean deep) { com.thinkbiganalytics.metadata.rest.model.sla.Obligation ob = new com.thinkbiganalytics.metadata.rest.model.sla.Obligation(); ob.setDescription(domainOb.getDescription()); if (deep) { ob.setMetrics(Lists.newArrayList(domainOb.getMetrics())); } return ob; } /** * Feed model transformer */ @Nonnull private final Model model; /** * Constructs a {@code ServiceLevelAgreementModelTransform}. * * @param model the feed model transformer */ public ServiceLevelAgreementModelTransform(@Nonnull final Model model) { this.model = model; } /** * Transforms the specified domain object to a REST object. * * @param domain the domain object * @return the REST object */ public com.thinkbiganalytics.metadata.rest.model.sla.FeedServiceLevelAgreement domainToFeedSlaShallow( com.thinkbiganalytics.metadata.api.sla.FeedServiceLevelAgreement domain) { return toModel(domain, false); } /** * Transforms the specified domain objects to REST objects. * * @param slaList the domain objects. * @return the REST objects */ public List<com.thinkbiganalytics.metadata.rest.model.sla.FeedServiceLevelAgreement> transformFeedServiceLevelAgreements( List<com.thinkbiganalytics.metadata.api.sla.FeedServiceLevelAgreement> slaList) { Collection<com.thinkbiganalytics.metadata.rest.model.sla.FeedServiceLevelAgreement> list = null; if (slaList != null) { list = Collections2.transform(slaList, this::domainToFeedSlaShallow); return new ArrayList<>(list); } return null; } /** * Transforms the specified domain object to a REST object. * * @param domain the domain * @param deep {@code true} to include action configurations * @return the REST object */ public FeedServiceLevelAgreement toModel( com.thinkbiganalytics.metadata.api.sla.FeedServiceLevelAgreement domain, boolean deep) { return toModel(domain, (Set<com.thinkbiganalytics.metadata.api.feed.Feed>) domain.getFeeds(), deep); } /** * Transforms the specified domain objects to REST objects. * * @param domain the SLA domain object * @param feeds the feed domain objects * @param deep {@code true} to include action configurations * @return the SLA REST object */ public FeedServiceLevelAgreement toModel(ServiceLevelAgreement domain, Set<com.thinkbiganalytics.metadata.api.feed.Feed> feeds, boolean deep) { com.thinkbiganalytics.metadata.rest.model.sla.ServiceLevelAgreement slaModel = toModel(domain, deep); FeedServiceLevelAgreement feedServiceLevelAgreement = new FeedServiceLevelAgreement(slaModel); boolean canEdit = false; boolean canView = true; if (feeds != null && !feeds.isEmpty()) { final Set<Feed> feedModels = feeds.stream().filter(feed -> feed != null).map(model::domainToFeed) .collect(Collectors.toSet()); feedServiceLevelAgreement.setFeeds(feedModels); if (accessController.isEntityAccessControlled()) { //set the flag on the sla edit to true only if the user has access to edit the feeds assigned to this sla canEdit = feeds.stream() .allMatch(feed -> feed.getAllowedActions().hasPermission(FeedAccessControl.EDIT_DETAILS)); //can view canView = feeds.stream() .allMatch(feed -> feed.getAllowedActions().hasPermission(FeedAccessControl.ACCESS_FEED)); } else { canEdit = this.accessController.hasPermission(AccessController.SERVICES, FeedServicesAccessControl.EDIT_SERVICE_LEVEL_AGREEMENTS); } } else { canEdit = this.accessController.hasPermission(AccessController.SERVICES, FeedServicesAccessControl.EDIT_SERVICE_LEVEL_AGREEMENTS); } slaModel.setCanEdit(canEdit); feedServiceLevelAgreement.setCanEdit(canEdit); return feedServiceLevelAgreement; } }