Java tutorial
/* * Copyright 2016 Google, 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 com.netflix.spinnaker.halyard.config.services.v1; import com.netflix.spinnaker.halyard.config.config.v1.AtomicFileWriter; import com.netflix.spinnaker.halyard.config.errors.v1.HalconfigException; import com.netflix.spinnaker.halyard.config.model.v1.node.NodeReference; import com.netflix.spinnaker.halyard.config.model.v1.problem.Problem; import com.netflix.spinnaker.halyard.config.model.v1.problem.ProblemBuilder; import com.netflix.spinnaker.halyard.config.spinnaker.v1.component.SpinnakerComponent; import java.io.IOException; import java.nio.file.FileSystem; import java.nio.file.FileSystems; import java.nio.file.Path; import java.util.ArrayList; import java.util.List; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; @Component @Slf4j public class GenerateService { @Autowired String spinnakerOutputPath; @Autowired(required = false) List<SpinnakerComponent> spinnakerComponents = new ArrayList<>(); public void generateConfig(NodeReference nodeReference) { for (SpinnakerComponent component : spinnakerComponents) { FileSystem defaultFileSystem = FileSystems.getDefault(); AtomicFileWriter writer = null; Path path = defaultFileSystem.getPath(spinnakerOutputPath, component.getConfigFileName()); log.info("Writing profile to " + path); try { writer = new AtomicFileWriter(path); writer.write(component.getFullConfig(nodeReference)); writer.commit(); } catch (IOException ioe) { ioe.printStackTrace(); throw new HalconfigException( new ProblemBuilder(Problem.Severity.FATAL, "Failed to write config for component " + component.getComponentName() + ": " + ioe.getMessage()).build()); } finally { if (writer != null) { writer.close(); } } } } }