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 static com.google.common.base.Preconditions.checkArgument;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.Beta;
14 import com.google.common.base.MoreObjects;
15 import com.google.common.base.MoreObjects.ToStringHelper;
16 import com.google.common.io.ByteSource;
17 import com.google.common.io.Resources;
19 import java.io.IOException;
20 import java.io.InputStream;
22 import java.util.Map.Entry;
23 import java.util.Optional;
24 import javax.annotation.Nonnull;
25 import org.opendaylight.yangtools.concepts.Delegator;
26 import org.opendaylight.yangtools.yang.common.YangConstants;
27 import org.opendaylight.yangtools.yang.common.YangNames;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
32 * YIN text schema source representation. Exposes an RFC6020 or RFC7950 XML representation as an {@link InputStream}.
35 public abstract class YinTextSchemaSource extends ByteSource implements YinSchemaSourceRepresentation {
36 private static final Logger LOG = LoggerFactory.getLogger(YinTextSchemaSource.class);
37 private static final String XML_EXTENSION = ".xml";
39 private final SourceIdentifier identifier;
41 protected YinTextSchemaSource(final SourceIdentifier identifier) {
42 this.identifier = requireNonNull(identifier);
45 public static SourceIdentifier identifierFromFilename(final String name) {
46 final String baseName;
47 if (name.endsWith(YangConstants.RFC6020_YIN_FILE_EXTENSION)) {
48 baseName = name.substring(0, name.length() - YangConstants.RFC6020_YIN_FILE_EXTENSION.length());
49 } else if (name.endsWith(XML_EXTENSION)) {
50 // FIXME: BUG-7061: remove this once we do not need it
51 LOG.warn("XML file {} being loaded as YIN", name);
52 baseName = name.substring(0, name.length() - XML_EXTENSION.length());
54 throw new IllegalArgumentException("Filename " + name + " does not have a .yin or .xml extension");
57 final Entry<String, String> parsed = YangNames.parseFilename(baseName);
58 return RevisionSourceIdentifier.create(parsed.getKey(), Optional.ofNullable(parsed.getValue()));
62 public final SourceIdentifier getIdentifier() {
68 public Class<? extends YinTextSchemaSource> getType() {
69 return YinTextSchemaSource.class;
73 public final String toString() {
74 return addToStringAttributes(MoreObjects.toStringHelper(this).add("identifier", identifier)).toString();
78 * Add subclass-specific attributes to the output {@link #toString()} output. Since
79 * subclasses are prevented from overriding {@link #toString()} for consistency
80 * reasons, they can add their specific attributes to the resulting string by attaching
81 * attributes to the supplied {@link ToStringHelper}.
83 * @param toStringHelper ToStringHelper onto the attributes can be added
84 * @return ToStringHelper supplied as input argument.
86 protected abstract ToStringHelper addToStringAttributes(ToStringHelper toStringHelper);
89 * Create a new YinTextSchemaSource with a specific source identifier and backed
90 * by ByteSource, which provides the actual InputStreams.
92 * @param identifier SourceIdentifier of the resulting schema source
93 * @param delegate Backing ByteSource instance
94 * @return A new YinTextSchemaSource
96 public static YinTextSchemaSource delegateForByteSource(final SourceIdentifier identifier,
97 final ByteSource delegate) {
98 return new DelegatedYinTextSchemaSource(identifier, delegate);
101 public static YinTextSchemaSource forFile(final File file) {
102 checkArgument(file.isFile(), "Supplied file %s is not a file", file);
103 return new YinTextFileSchemaSource(identifierFromFilename(file.getName()), file);
106 public static YinTextSchemaSource forResource(final Class<?> clazz, final String resourceName) {
107 final String fileName = resourceName.substring(resourceName.lastIndexOf('/') + 1);
108 final SourceIdentifier identifier = identifierFromFilename(fileName);
109 final URL url = Resources.getResource(clazz, resourceName);
110 return new ResourceYinTextSchemaSource(identifier, url);
113 private static final class DelegatedYinTextSchemaSource extends YinTextSchemaSource
114 implements Delegator<ByteSource> {
115 private final ByteSource delegate;
117 private DelegatedYinTextSchemaSource(final SourceIdentifier identifier, final ByteSource delegate) {
119 this.delegate = requireNonNull(delegate);
123 public ByteSource getDelegate() {
128 public InputStream openStream() throws IOException {
129 return delegate.openStream();
133 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
134 return toStringHelper.add("delegate", delegate);