/*
* Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.yangtools.yang.data.api.schema.stream;
import com.google.common.annotations.Beta;
import com.google.common.base.Strings;
import java.util.ArrayDeque;
import java.util.Deque;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A {@link NormalizedNodeStreamWriter} which logs the events into a {@link Logger}.
*/
@Beta
public final class LoggingNormalizedNodeStreamWriter implements NormalizedNodeStreamWriter {
private static final Logger LOG = LoggerFactory.getLogger(LoggingNormalizedNodeStreamWriter.class);
private static final int DEFAULT_INDENT_SIZE = 2;
private final Deque<String> indent = new ArrayDeque<>();
private final String indentStr;
public LoggingNormalizedNodeStreamWriter() {
this(DEFAULT_INDENT_SIZE);
}
public LoggingNormalizedNodeStreamWriter(final int indentSize) {
this.indentStr = Strings.repeat(" ", indentSize);
indent.push("");
}
private String ind() {
return indent.peek();
}
private void decIndent() {
indent.pop();
}
private void incIndent() {
indent.push(ind() + indentStr);
}
@Override
public void startUnkeyedListItem(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}[](no key)", ind(), name);
incIndent();
}
@Override
public void startUnkeyedList(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}(no key)", ind(), name);
incIndent();
}
@Override
public void startOrderedMapNode(final NodeIdentifier name, final int childSizeHint) {
}
@Override
public void startMapNode(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}(key)", ind(), name);
incIndent();
}
@Override
public void startMapEntryNode(final NodeIdentifierWithPredicates identifier, final int childSizeHint) {
LOG.debug("{}{}[](key)", ind(), identifier);
incIndent();
}
@Override
public void startLeafSet(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}(leaf-list)", ind(), name);
incIndent();
}
@Override
public void startOrderedLeafSet(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}(leaf-list)", ind(), name);
incIndent();
}
@Override
public void startContainerNode(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}(container)", ind(), name);
incIndent();
}
@Override
public void startChoiceNode(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}(choice)", ind(), name);
incIndent();
}
@Override
public void startAugmentationNode(final AugmentationIdentifier identifier) {
LOG.debug("{}{}(augmentation)", ind(), identifier);
incIndent();
}
@Override
public void leafSetEntryNode(final QName name, final Object value) {
LOG.debug("{}{}({}) ", ind(), value, value.getClass().getSimpleName());
}
@Override
public void leafNode(final NodeIdentifier name, final Object value) {
if (value == null) {
LOG.debug("{}{}(leaf(null))=null", ind(), name);
} else {
LOG.debug("{}{}(leaf({}))={}", ind(), name, value.getClass().getSimpleName(), value);
}
}
@Override
public void endNode() {
decIndent();
LOG.debug("{}(end)", ind());
}
@Override
public void anyxmlNode(final NodeIdentifier name, final Object value) {
LOG.debug("{}{}(anyxml)=", ind(), name, value);
}
@Override
public void startYangModeledAnyXmlNode(final NodeIdentifier name, final int childSizeHint) {
LOG.debug("{}{}(yangModeledAnyXml)", ind(), name);
incIndent();
}
@Override
public void flush() {
LOG.trace("<<FLUSH>>");
}
@Override
public void close() {
LOG.debug("<<END-OF-STREAM>>");
}
}