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;
18 import java.io.InputStream;
19 import java.nio.file.Files;
20 import java.nio.file.Path;
21 import java.util.Map.Entry;
22 import org.eclipse.jdt.annotation.NonNull;
23 import org.opendaylight.yangtools.yang.common.Revision;
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 @NonNull SourceIdentifier identifier;
39 protected YinTextSchemaSource(final SourceIdentifier identifier) {
40 this.identifier = requireNonNull(identifier);
43 public static @NonNull 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(), Revision.ofNullable(parsed.getValue()));
60 public final SourceIdentifier getIdentifier() {
65 public Class<? extends YinTextSchemaSource> getType() {
66 return YinTextSchemaSource.class;
70 public final String toString() {
71 return addToStringAttributes(MoreObjects.toStringHelper(this).add("identifier", identifier)).toString();
75 * Add subclass-specific attributes to the output {@link #toString()} output. Since
76 * subclasses are prevented from overriding {@link #toString()} for consistency
77 * reasons, they can add their specific attributes to the resulting string by attaching
78 * attributes to the supplied {@link ToStringHelper}.
80 * @param toStringHelper ToStringHelper onto the attributes can be added
81 * @return ToStringHelper supplied as input argument.
83 protected abstract ToStringHelper addToStringAttributes(@NonNull ToStringHelper toStringHelper);
86 * Create a new YinTextSchemaSource with a specific source identifier and backed
87 * by ByteSource, which provides the actual InputStreams.
89 * @param identifier SourceIdentifier of the resulting schema source
90 * @param delegate Backing ByteSource instance
91 * @return A new YinTextSchemaSource
93 public static @NonNull YinTextSchemaSource delegateForByteSource(final SourceIdentifier identifier,
94 final ByteSource delegate) {
95 return new DelegatedYinTextSchemaSource(identifier, delegate);
98 public static @NonNull YinTextSchemaSource forPath(final Path path) {
99 checkArgument(Files.isRegularFile(path), "Supplied path %s is not a regular file", path);
100 return new YinTextFileSchemaSource(identifierFromFilename(path.toFile().getName()), path);
103 public static @NonNull YinTextSchemaSource forResource(final Class<?> clazz, final String resourceName) {
104 final String fileName = resourceName.substring(resourceName.lastIndexOf('/') + 1);
105 return new ResourceYinTextSchemaSource(identifierFromFilename(fileName),
106 Resources.getResource(clazz, resourceName));