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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
*
* 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.fd.honeycomb.yang;
import java.nio.file.Path;
import java.util.Objects;
import javax.annotation.Nonnull;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.PropertyException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class YangModuleWhitelistWriter extends JAXBContextHolder {
private static final Logger LOG = LoggerFactory.getLogger(YangModuleWhitelistWriter.class);
public YangModuleWhitelistWriter() {
super(YangModuleWhitelist.class);
}
/**
* Output serialized whitelist on specified path
*
* @param whitelist whitelist configuration
* @param outPath output path
*/
public void write(@Nonnull final YangModuleWhitelist whitelist,
@Nonnull final Path outPath,
final boolean formatOutput) {
Objects.requireNonNull(whitelist, "Cannot white null whitelist");
// mashaller is not synchronized and lightweight, best practice is to create it per request(as opose to ctx,
// that should be created just once)
final Marshaller marshaller = createMarshaller(getCtx());
setupPrettyPrint(marshaller, formatOutput);
whiteWhitelist(whitelist, outPath, marshaller);
}
private static void whiteWhitelist(final YangModuleWhitelist whitelist, final Path outPath,
final Marshaller marshaller) {
try {
LOG.debug("Writing whitelist {} to file {}", whitelist, outPath);
marshaller.marshal(whitelist, outPath.toFile());
LOG.debug("Whitelist successfully written to file {}", outPath);
} catch (JAXBException e) {
throw new IllegalStateException("Unable to write whitelist", e);
}
}
private static void setupPrettyPrint(final Marshaller marshaller, final boolean value) {
try {
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, value);
} catch (PropertyException e) {
throw new IllegalStateException("Unable to setup pretty print", e);
}
}
private static Marshaller createMarshaller(final JAXBContext ctx) {
try {
return ctx.createMarshaller();
} catch (JAXBException e) {
throw new IllegalStateException("Unable to create marshaller", e);
}
}
}
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