2 * Copyright (c) 2014 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.data.codec.gson;
10 import static com.google.common.base.Verify.verifyNotNull;
12 import com.google.gson.JsonParseException;
13 import com.google.gson.stream.JsonReader;
14 import com.google.gson.stream.JsonToken;
15 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
16 import java.io.IOException;
17 import java.io.InputStream;
18 import java.io.InputStreamReader;
19 import java.nio.charset.StandardCharsets;
20 import java.util.List;
21 import java.util.function.BiFunction;
22 import org.eclipse.jdt.annotation.NonNull;
23 import org.opendaylight.yangtools.yang.common.QName;
24 import org.opendaylight.yangtools.yang.common.QNameModule;
25 import org.opendaylight.yangtools.yang.common.UnresolvedQName.Unqualified;
26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
28 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
29 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizationException;
30 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizationResult;
31 import org.opendaylight.yangtools.yang.data.impl.codec.AbstractIntegerStringCodec;
32 import org.opendaylight.yangtools.yang.data.impl.codec.BinaryStringCodec;
33 import org.opendaylight.yangtools.yang.data.impl.codec.BitsStringCodec;
34 import org.opendaylight.yangtools.yang.data.impl.codec.BooleanStringCodec;
35 import org.opendaylight.yangtools.yang.data.impl.codec.DecimalStringCodec;
36 import org.opendaylight.yangtools.yang.data.impl.codec.EnumStringCodec;
37 import org.opendaylight.yangtools.yang.data.impl.codec.StringStringCodec;
38 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
39 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizationResultHolder;
40 import org.opendaylight.yangtools.yang.data.spi.node.ImmutableNodes;
41 import org.opendaylight.yangtools.yang.data.util.codec.AbstractInputStreamNormalizer;
42 import org.opendaylight.yangtools.yang.data.util.codec.CodecCache;
43 import org.opendaylight.yangtools.yang.data.util.codec.LazyCodecCache;
44 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
45 import org.opendaylight.yangtools.yang.model.api.EffectiveStatementInference;
46 import org.opendaylight.yangtools.yang.model.api.type.BinaryTypeDefinition;
47 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
48 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
49 import org.opendaylight.yangtools.yang.model.api.type.DecimalTypeDefinition;
50 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
51 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
52 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
53 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
54 import org.opendaylight.yangtools.yang.model.api.type.Int16TypeDefinition;
55 import org.opendaylight.yangtools.yang.model.api.type.Int32TypeDefinition;
56 import org.opendaylight.yangtools.yang.model.api.type.Int64TypeDefinition;
57 import org.opendaylight.yangtools.yang.model.api.type.Int8TypeDefinition;
58 import org.opendaylight.yangtools.yang.model.api.type.StringTypeDefinition;
59 import org.opendaylight.yangtools.yang.model.api.type.Uint16TypeDefinition;
60 import org.opendaylight.yangtools.yang.model.api.type.Uint32TypeDefinition;
61 import org.opendaylight.yangtools.yang.model.api.type.Uint64TypeDefinition;
62 import org.opendaylight.yangtools.yang.model.api.type.Uint8TypeDefinition;
63 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
64 import org.opendaylight.yangtools.yang.model.api.type.UnknownTypeDefinition;
65 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
68 * Factory for creating JSON equivalents of codecs. Each instance of this object is bound to
69 * a particular {@link EffectiveModelContext}, but can be reused by multiple {@link JSONNormalizedNodeStreamWriter}s.
71 public abstract sealed class JSONCodecFactory extends AbstractInputStreamNormalizer<JSONCodec<?>> {
72 @Deprecated(since = "12.0.0", forRemoval = true)
73 static final class Lhotka02 extends JSONCodecFactory {
74 Lhotka02(final @NonNull EffectiveModelContext context, final @NonNull CodecCache<JSONCodec<?>> cache) {
75 super(context, cache, JSONInstanceIdentifierCodec.Lhotka02::new);
79 Lhotka02 rebaseTo(final EffectiveModelContext newSchemaContext, final CodecCache<JSONCodec<?>> newCache) {
80 return new Lhotka02(newSchemaContext, newCache);
84 JSONCodec<?> wrapDecimalCodec(final DecimalStringCodec decimalCodec) {
85 return new NumberJSONCodec<>(decimalCodec);
89 JSONCodec<?> wrapIntegerCodec(final AbstractIntegerStringCodec<?, ?> integerCodec) {
90 return new NumberJSONCodec<>(integerCodec);
94 static final class RFC7951 extends JSONCodecFactory {
95 RFC7951(final @NonNull EffectiveModelContext context, final @NonNull CodecCache<JSONCodec<?>> cache) {
96 super(context, cache, JSONInstanceIdentifierCodec.RFC7951::new);
100 RFC7951 rebaseTo(final EffectiveModelContext newSchemaContext, final CodecCache<JSONCodec<?>> newCache) {
101 return new RFC7951(newSchemaContext, newCache);
105 JSONCodec<?> wrapDecimalCodec(final DecimalStringCodec decimalCodec) {
106 return new QuotedJSONCodec<>(decimalCodec);
110 JSONCodec<?> wrapIntegerCodec(final AbstractIntegerStringCodec<?, ?> integerCodec) {
111 return new QuotedJSONCodec<>(integerCodec);
115 private final @NonNull JSONInstanceIdentifierCodec iidCodec;
117 @SuppressFBWarnings(value = "MC_OVERRIDABLE_METHOD_CALL_IN_CONSTRUCTOR",
118 justification = "https://github.com/spotbugs/spotbugs/issues/1867")
119 private JSONCodecFactory(final @NonNull EffectiveModelContext context,
120 final @NonNull CodecCache<JSONCodec<?>> cache,
121 final BiFunction<EffectiveModelContext, JSONCodecFactory, @NonNull JSONInstanceIdentifierCodec> iidCodec) {
122 super(context, cache);
123 this.iidCodec = verifyNotNull(iidCodec.apply(context, this));
127 protected final JSONCodec<?> binaryCodec(final BinaryTypeDefinition type) {
128 return new QuotedJSONCodec<>(BinaryStringCodec.from(type));
132 protected final JSONCodec<?> booleanCodec(final BooleanTypeDefinition type) {
133 return new BooleanJSONCodec(BooleanStringCodec.from(type));
137 protected final JSONCodec<?> bitsCodec(final BitsTypeDefinition type) {
138 return new QuotedJSONCodec<>(BitsStringCodec.from(type));
142 protected final JSONCodec<?> decimalCodec(final DecimalTypeDefinition type) {
143 return wrapDecimalCodec(DecimalStringCodec.from(type));
147 protected final JSONCodec<?> emptyCodec(final EmptyTypeDefinition type) {
148 return EmptyJSONCodec.INSTANCE;
152 protected final JSONCodec<?> enumCodec(final EnumTypeDefinition type) {
153 return new QuotedJSONCodec<>(EnumStringCodec.from(type));
157 protected final JSONCodec<QName> identityRefCodec(final IdentityrefTypeDefinition type, final QNameModule module) {
158 return new IdentityrefJSONCodec(modelContext(), module);
162 protected final JSONCodec<YangInstanceIdentifier> instanceIdentifierCodec(
163 final InstanceIdentifierTypeDefinition type) {
168 public JSONCodec<YangInstanceIdentifier> instanceIdentifierCodec() {
173 protected final JSONCodec<?> int8Codec(final Int8TypeDefinition type) {
174 return new NumberJSONCodec<>(AbstractIntegerStringCodec.from(type));
178 protected final JSONCodec<?> int16Codec(final Int16TypeDefinition type) {
179 return new NumberJSONCodec<>(AbstractIntegerStringCodec.from(type));
183 protected final JSONCodec<?> int32Codec(final Int32TypeDefinition type) {
184 return new NumberJSONCodec<>(AbstractIntegerStringCodec.from(type));
188 protected final JSONCodec<?> int64Codec(final Int64TypeDefinition type) {
189 return wrapIntegerCodec(AbstractIntegerStringCodec.from(type));
193 protected final JSONCodec<?> stringCodec(final StringTypeDefinition type) {
194 return new QuotedJSONCodec<>(StringStringCodec.from(type));
198 protected final JSONCodec<?> uint8Codec(final Uint8TypeDefinition type) {
199 return new NumberJSONCodec<>(AbstractIntegerStringCodec.from(type));
203 protected final JSONCodec<?> uint16Codec(final Uint16TypeDefinition type) {
204 return new NumberJSONCodec<>(AbstractIntegerStringCodec.from(type));
208 protected final JSONCodec<?> uint32Codec(final Uint32TypeDefinition type) {
209 return new NumberJSONCodec<>(AbstractIntegerStringCodec.from(type));
213 protected final JSONCodec<?> uint64Codec(final Uint64TypeDefinition type) {
214 return wrapIntegerCodec(AbstractIntegerStringCodec.from(type));
218 protected final JSONCodec<?> unionCodec(final UnionTypeDefinition type, final List<JSONCodec<?>> codecs) {
219 return UnionJSONCodec.create(type, codecs);
223 @Deprecated(since = "13.0.3", forRemoval = true)
224 protected final JSONCodec<?> unknownCodec(final UnknownTypeDefinition type) {
225 return NullJSONCodec.INSTANCE;
228 // Returns a one-off factory for the purposes of normalizing an anydata tree.
230 // FIXME: 7.0.0: this is really ugly, as we should be able to tell if the new context is the same as ours and
231 // whether our cache is thread-safe -- in which case we should just return this.
232 // The supplier/cache/factory layout needs to be reworked so that this call ends up being equivalent
233 // to JSONCodecFactorySupplier.getShared() in case this factory is not thread safe.
235 // The above is not currently possible, as we cannot reference JSONCodecFactorySupplier from the
236 // factory due to that potentially creating a circular reference.
237 final JSONCodecFactory rebaseTo(final EffectiveModelContext newSchemaContext) {
238 return rebaseTo(newSchemaContext, new LazyCodecCache<>());
241 abstract JSONCodecFactory rebaseTo(EffectiveModelContext newSchemaContext, CodecCache<JSONCodec<?>> newCache);
243 abstract JSONCodec<?> wrapDecimalCodec(DecimalStringCodec decimalCodec);
245 abstract JSONCodec<?> wrapIntegerCodec(AbstractIntegerStringCodec<?, ?> integerCodec);
248 protected final NormalizationResult<ContainerNode> parseDatastore(final InputStream stream,
249 final NodeIdentifier containerName, final Unqualified moduleName)
250 throws IOException, NormalizationException {
251 // This is bit more involved: given this example document:
254 // "ietf-restconf:data" : {
261 // we need to first peel this part:
264 // "ietf-restconf:data" :
266 // validating it really the name matches rootName and that it is followed by '{', i.e. it really is an object.
268 // We then need to essentially do the equivalent of parseStream() on the EffectiveModelContext, but the receiver
269 // should be the builder for our resulting node -- we cannot and do not want to use a holder, as can legally
270 // more than one child.
272 // Then we need to take care of the last closing brace, raising an error if there is any other content -- i.e.
273 // we need to reach the end of JsonReader.
275 // And then it's just a matter of returning the built container.
276 try (var reader = new JsonReader(new InputStreamReader(stream, StandardCharsets.UTF_8))) {
277 reader.beginObject();
278 final var name = reader.nextName();
279 final var expected = moduleName.getLocalName() + ':' + containerName.getNodeType().getLocalName();
280 if (!expected.equals(name)) {
281 throw NormalizationException.ofMessage("Expected name '" + expected + "', got '" + name + "'");
284 final var builder = ImmutableNodes.newContainerBuilder().withNodeIdentifier(containerName);
286 if (reader.peek() == JsonToken.BEGIN_OBJECT) {
287 try (var writer = ImmutableNormalizedNodeStreamWriter.from(builder)) {
288 try (var parser = JsonParserStream.create(writer, this)) {
289 parser.parse(reader);
290 } catch (JsonParseException e) {
291 throw NormalizationException.ofCause(e);
297 final var nextToken = reader.peek();
298 if (nextToken != JsonToken.END_DOCUMENT) {
299 throw NormalizationException.ofMessage("Expected end of JSON document, got " + nextToken);
301 return new NormalizationResult<>(builder.build());
302 } catch (IllegalStateException e) {
303 throw NormalizationException.ofCause(e);
308 protected final NormalizationResult<?> parseData(final SchemaInferenceStack stack, final InputStream stream)
309 throws IOException, NormalizationException {
310 // Point to parent node
312 return parseStream(stack.toInference(), stream);
316 protected final NormalizationResult<?> parseChildData(final InputStream stream,
317 final EffectiveStatementInference inference) throws IOException, NormalizationException {
318 return parseStream(inference, stream);
322 protected final NormalizationResult<?> parseInputOutput(final SchemaInferenceStack stack, final QName expected,
323 final InputStream stream) throws IOException, NormalizationException {
324 return checkNodeName(parseStream(stack.toInference(), stream), expected);
327 private @NonNull NormalizationResult<?> parseStream(final @NonNull EffectiveStatementInference inference,
328 final @NonNull InputStream stream) throws IOException, NormalizationException {
329 try (var reader = new JsonReader(new InputStreamReader(stream, StandardCharsets.UTF_8))) {
330 final var holder = new NormalizationResultHolder();
331 try (var writer = ImmutableNormalizedNodeStreamWriter.from(holder)) {
332 try (var parser = JsonParserStream.create(writer, this, inference)) {
333 parser.parse(reader);
334 } catch (JsonParseException e) {
335 throw NormalizationException.ofCause(e);
338 return holder.getResult();