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 java.io.IOException;
17 import java.io.InputStream;
18 import java.util.Map.Entry;
19 import javax.annotation.Nonnull;
20 import org.opendaylight.yangtools.concepts.Delegator;
21 import org.opendaylight.yangtools.yang.common.YangConstants;
22 import org.opendaylight.yangtools.yang.common.YangNames;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
27 * YIN text schema source representation. Exposes an RFC6020 or RFC7950 XML representation as an {@link InputStream}.
30 public abstract class YinTextSchemaSource extends ByteSource implements YinSchemaSourceRepresentation {
31 private static final Logger LOG = LoggerFactory.getLogger(YinTextSchemaSource.class);
32 private static final String XML_EXTENSION = ".xml";
34 private final SourceIdentifier identifier;
36 protected YinTextSchemaSource(final SourceIdentifier identifier) {
37 this.identifier = Preconditions.checkNotNull(identifier);
40 public static SourceIdentifier identifierFromFilename(final String name) {
41 final String baseName;
42 if (name.endsWith(YangConstants.RFC6020_YIN_FILE_EXTENSION)) {
43 baseName = name.substring(0, name.length() - YangConstants.RFC6020_YIN_FILE_EXTENSION.length());
44 } else if (name.endsWith(XML_EXTENSION)) {
45 // FIXME: BUG-7061: remove this once we do not need it
46 LOG.warn("XML file {} being loaded as YIN", name);
47 baseName = name.substring(0, name.length() - XML_EXTENSION.length());
49 throw new IllegalArgumentException("Filename " + name + " does not have a .yin or .xml extension");
52 final Entry<String, String> parsed = YangNames.parseFilename(baseName);
53 return RevisionSourceIdentifier.create(parsed.getKey(), Optional.fromNullable(parsed.getValue()));
57 public final SourceIdentifier getIdentifier() {
63 public Class<? extends YinTextSchemaSource> getType() {
64 return YinTextSchemaSource.class;
68 public final String toString() {
69 return addToStringAttributes(MoreObjects.toStringHelper(this).add("identifier", identifier)).toString();
73 * Add subclass-specific attributes to the output {@link #toString()} output. Since
74 * subclasses are prevented from overriding {@link #toString()} for consistency
75 * reasons, they can add their specific attributes to the resulting string by attaching
76 * attributes to the supplied {@link ToStringHelper}.
78 * @param toStringHelper ToStringHelper onto the attributes can be added
79 * @return ToStringHelper supplied as input argument.
81 protected abstract ToStringHelper addToStringAttributes(ToStringHelper toStringHelper);
84 * Create a new YinTextSchemaSource with a specific source identifier and backed
85 * by ByteSource, which provides the actual InputStreams.
87 * @param identifier SourceIdentifier of the resulting schema source
88 * @param delegate Backing ByteSource instance
89 * @return A new YinTextSchemaSource
91 public static YinTextSchemaSource delegateForByteSource(final SourceIdentifier identifier,
92 final ByteSource delegate) {
93 return new DelegatedYinTextSchemaSource(identifier, delegate);
96 private static final class DelegatedYinTextSchemaSource extends YinTextSchemaSource
97 implements Delegator<ByteSource> {
98 private final ByteSource delegate;
100 private DelegatedYinTextSchemaSource(final SourceIdentifier identifier, final ByteSource delegate) {
102 this.delegate = Preconditions.checkNotNull(delegate);
106 public ByteSource getDelegate() {
111 public InputStream openStream() throws IOException {
112 return delegate.openStream();
116 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
117 return toStringHelper.add("delegate", delegate);