2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.model.repo.api;
10 import com.google.common.annotations.Beta;
11 import com.google.common.base.MoreObjects;
12 import com.google.common.base.MoreObjects.ToStringHelper;
13 import com.google.common.base.Optional;
14 import com.google.common.base.Preconditions;
15 import com.google.common.io.ByteSource;
16 import com.google.common.io.Resources;
18 import java.io.IOException;
19 import java.io.InputStream;
21 import java.util.Map.Entry;
22 import javax.annotation.Nonnull;
23 import org.opendaylight.yangtools.concepts.Delegator;
24 import org.opendaylight.yangtools.yang.common.YangConstants;
25 import org.opendaylight.yangtools.yang.common.YangNames;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
30 * YIN text schema source representation. Exposes an RFC6020 or RFC7950 XML representation as an {@link InputStream}.
33 public abstract class YinTextSchemaSource extends ByteSource implements YinSchemaSourceRepresentation {
34 private static final Logger LOG = LoggerFactory.getLogger(YinTextSchemaSource.class);
35 private static final String XML_EXTENSION = ".xml";
37 private final SourceIdentifier identifier;
39 protected YinTextSchemaSource(final SourceIdentifier identifier) {
40 this.identifier = Preconditions.checkNotNull(identifier);
43 public static SourceIdentifier identifierFromFilename(final String name) {
44 final String baseName;
45 if (name.endsWith(YangConstants.RFC6020_YIN_FILE_EXTENSION)) {
46 baseName = name.substring(0, name.length() - YangConstants.RFC6020_YIN_FILE_EXTENSION.length());
47 } else if (name.endsWith(XML_EXTENSION)) {
48 // FIXME: BUG-7061: remove this once we do not need it
49 LOG.warn("XML file {} being loaded as YIN", name);
50 baseName = name.substring(0, name.length() - XML_EXTENSION.length());
52 throw new IllegalArgumentException("Filename " + name + " does not have a .yin or .xml extension");
55 final Entry<String, String> parsed = YangNames.parseFilename(baseName);
56 return RevisionSourceIdentifier.create(parsed.getKey(), Optional.fromNullable(parsed.getValue()));
60 public final SourceIdentifier getIdentifier() {
66 public Class<? extends YinTextSchemaSource> getType() {
67 return YinTextSchemaSource.class;
71 public final String toString() {
72 return addToStringAttributes(MoreObjects.toStringHelper(this).add("identifier", identifier)).toString();
76 * Add subclass-specific attributes to the output {@link #toString()} output. Since
77 * subclasses are prevented from overriding {@link #toString()} for consistency
78 * reasons, they can add their specific attributes to the resulting string by attaching
79 * attributes to the supplied {@link ToStringHelper}.
81 * @param toStringHelper ToStringHelper onto the attributes can be added
82 * @return ToStringHelper supplied as input argument.
84 protected abstract ToStringHelper addToStringAttributes(ToStringHelper toStringHelper);
87 * Create a new YinTextSchemaSource with a specific source identifier and backed
88 * by ByteSource, which provides the actual InputStreams.
90 * @param identifier SourceIdentifier of the resulting schema source
91 * @param delegate Backing ByteSource instance
92 * @return A new YinTextSchemaSource
94 public static YinTextSchemaSource delegateForByteSource(final SourceIdentifier identifier,
95 final ByteSource delegate) {
96 return new DelegatedYinTextSchemaSource(identifier, delegate);
99 public static YinTextSchemaSource forFile(final File file) {
100 Preconditions.checkArgument(file.isFile(), "Supplied file %s is not a file", file);
101 return new YinTextFileSchemaSource(identifierFromFilename(file.getName()), file);
104 public static YinTextSchemaSource forResource(final Class<?> clazz, final String resourceName) {
105 final String fileName = resourceName.substring(resourceName.lastIndexOf('/') + 1);
106 final SourceIdentifier identifier = identifierFromFilename(fileName);
107 final URL url = Resources.getResource(clazz, resourceName);
108 return new ResourceYinTextSchemaSource(identifier, url);
111 private static final class DelegatedYinTextSchemaSource extends YinTextSchemaSource
112 implements Delegator<ByteSource> {
113 private final ByteSource delegate;
115 private DelegatedYinTextSchemaSource(final SourceIdentifier identifier, final ByteSource delegate) {
117 this.delegate = Preconditions.checkNotNull(delegate);
121 public ByteSource getDelegate() {
126 public InputStream openStream() throws IOException {
127 return delegate.openStream();
131 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
132 return toStringHelper.add("delegate", delegate);