| /* |
| * 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.felix.systemready.impl; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| import org.apache.felix.rootcause.DSComp; |
| import org.apache.felix.rootcause.DSRootCause; |
| import org.apache.felix.rootcause.RootCausePrinter; |
| import org.apache.felix.systemready.CheckStatus; |
| import org.apache.felix.systemready.StateType; |
| import org.apache.felix.systemready.SystemReadyCheck; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.ConfigurationPolicy; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.runtime.ServiceComponentRuntime; |
| import org.osgi.service.metatype.annotations.AttributeDefinition; |
| import org.osgi.service.metatype.annotations.Designate; |
| import org.osgi.service.metatype.annotations.ObjectClassDefinition; |
| |
| @Component( |
| name = ComponentsCheck.PID, |
| configurationPolicy = ConfigurationPolicy.REQUIRE |
| ) |
| @Designate(ocd=ComponentsCheck.Config.class) |
| public class ComponentsCheck implements SystemReadyCheck { |
| |
| public static final String PID = "org.apache.felix.systemready.impl.ComponentsCheck"; |
| |
| @ObjectClassDefinition( |
| name="DS Components System Ready Check", |
| description="System ready check that checks a list of DS components" |
| + "and provides root cause analysis in case of errors" |
| ) |
| public @interface Config { |
| |
| @AttributeDefinition(name = "Components list", description = "The components that need to come up before this check reports GREEN") |
| String[] components_list(); |
| |
| @AttributeDefinition(name = "Check type") |
| StateType type() default StateType.ALIVE; |
| |
| } |
| |
| private List<String> componentsList; |
| |
| private DSRootCause analyzer; |
| |
| private StateType type; |
| |
| @Reference |
| ServiceComponentRuntime scr; |
| |
| |
| @Activate |
| public void activate(final BundleContext ctx, final Config config) throws InterruptedException { |
| this.analyzer = new DSRootCause(scr); |
| this.type = config.type(); |
| componentsList = Arrays.asList(config.components_list()); |
| } |
| |
| @Override |
| public String getName() { |
| return "Components Check " + componentsList; |
| } |
| |
| @Override |
| public CheckStatus getStatus() { |
| StringBuilder details = new StringBuilder(); |
| List<DSComp> watchedComps = scr.getComponentDescriptionDTOs().stream() |
| .filter(desc -> componentsList.contains(desc.name)) |
| .map(analyzer::getRootCause) |
| .collect(Collectors.toList()); |
| if (watchedComps.size() < componentsList.size()) { |
| throw new IllegalStateException("Not all named components could be found"); |
| }; |
| watchedComps.stream().forEach(dsComp -> addDetails(dsComp, details)); |
| final CheckStatus.State state = CheckStatus.State.worstOf(watchedComps.stream().map(this::status)); |
| return new CheckStatus(getName(), type, state, details.toString()); |
| } |
| |
| private CheckStatus.State status(DSComp component) { |
| boolean missingConfig = component.config == null && "require".equals(component.desc.configurationPolicy); |
| boolean unsatisfied = !component.unsatisfied.isEmpty(); |
| return (missingConfig || unsatisfied) ? CheckStatus.State.YELLOW : CheckStatus.State.GREEN; |
| } |
| |
| private void addDetails(DSComp component, StringBuilder details) { |
| RootCausePrinter printer = new RootCausePrinter(st -> details.append(st + "\n")); |
| printer.print(component); |
| } |
| |
| } |