Ditch use of LinkedList in BindingCodecContext
[mdsal.git] / binding / mdsal-binding-dom-codec / src / main / java / org / opendaylight / mdsal / binding / dom / codec / impl / BindingCodecContext.java
index aa62a2192f3d0253770c23e16fb9c7991d18320d..57492a4bf3f62bcf5054494104f0e6bddfbf93d1 100644 (file)
@@ -12,11 +12,13 @@ import static com.google.common.base.Preconditions.checkState;
 import static com.google.common.base.Verify.verify;
 import static java.util.Objects.requireNonNull;
 
+import com.google.common.base.Strings;
 import com.google.common.cache.CacheBuilder;
 import com.google.common.cache.CacheLoader;
 import com.google.common.cache.LoadingCache;
 import com.google.common.collect.ImmutableMap;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+import java.io.File;
 import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
@@ -27,7 +29,6 @@ import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -43,15 +44,14 @@ import org.opendaylight.mdsal.binding.dom.codec.api.BindingInstanceIdentifierCod
 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeWriterFactory;
 import org.opendaylight.mdsal.binding.dom.codec.api.BindingStreamEventWriter;
 import org.opendaylight.mdsal.binding.dom.codec.impl.NodeCodecContext.CodecContextFactory;
-import org.opendaylight.mdsal.binding.dom.codec.impl.loader.CodecClassLoader;
 import org.opendaylight.mdsal.binding.dom.codec.spi.AbstractBindingNormalizedNodeSerializer;
 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingSchemaMapping;
+import org.opendaylight.mdsal.binding.loader.BindingClassLoader;
 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeContext;
 import org.opendaylight.mdsal.binding.runtime.api.ListRuntimeType;
 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
 import org.opendaylight.yangtools.concepts.Delegator;
-import org.opendaylight.yangtools.concepts.IllegalArgumentCodec;
 import org.opendaylight.yangtools.concepts.Immutable;
 import org.opendaylight.yangtools.util.ClassLoaderUtils;
 import org.opendaylight.yangtools.yang.binding.Action;
@@ -119,6 +119,12 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
     }
 
     private static final Logger LOG = LoggerFactory.getLogger(BindingCodecContext.class);
+    private static final File BYTECODE_DIRECTORY;
+
+    static {
+        final String dir = System.getProperty("org.opendaylight.mdsal.binding.dom.codec.loader.bytecodeDumpDirectory");
+        BYTECODE_DIRECTORY = Strings.isNullOrEmpty(dir) ? null : new File(dir);
+    }
 
     private final LoadingCache<Class<?>, DataObjectStreamer<?>> streamers = CacheBuilder.newBuilder().build(
         new CacheLoader<Class<?>, DataObjectStreamer<?>>() {
@@ -138,7 +144,8 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
             }
         });
 
-    private final @NonNull CodecClassLoader loader = CodecClassLoader.create();
+    private final @NonNull BindingClassLoader loader =
+        BindingClassLoader.create(BindingCodecContext.class, BYTECODE_DIRECTORY);
     private final @NonNull InstanceIdentifierCodec instanceIdentifierCodec;
     private final @NonNull IdentityCodec identityCodec;
     private final @NonNull BindingRuntimeContext context;
@@ -162,7 +169,7 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
     }
 
     @Override
-    public CodecClassLoader getLoader() {
+    public BindingClassLoader getLoader() {
         return loader;
     }
 
@@ -194,39 +201,40 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
     @Override
     public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriterAndIdentifier(
             final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
-        final List<YangInstanceIdentifier.PathArgument> yangArgs = new LinkedList<>();
-        final DataContainerCodecContext<?,?> codecContext = getCodecContextNode(path, yangArgs);
-        return Map.entry(YangInstanceIdentifier.create(yangArgs), codecContext.createWriter(domWriter));
+        final var yangArgs = new ArrayList<YangInstanceIdentifier.PathArgument>();
+        final var codecContext = getCodecContextNode(path, yangArgs);
+        return Map.entry(YangInstanceIdentifier.create(yangArgs),
+            new BindingToNormalizedStreamWriter(codecContext, domWriter));
     }
 
     @Override
     public BindingStreamEventWriter newWriter(final InstanceIdentifier<?> path,
             final NormalizedNodeStreamWriter domWriter) {
-        return getCodecContextNode(path, null).createWriter(domWriter);
+        return new BindingToNormalizedStreamWriter(getCodecContextNode(path, null), domWriter);
     }
 
     @Override
     public BindingStreamEventWriter newRpcWriter(final Class<? extends DataContainer> rpcInputOrOutput,
             final NormalizedNodeStreamWriter domWriter) {
-        return root.getRpc(rpcInputOrOutput).createWriter(domWriter);
+        return new BindingToNormalizedStreamWriter(root.getRpc(rpcInputOrOutput), domWriter);
     }
 
     @Override
     public BindingStreamEventWriter newNotificationWriter(final Class<? extends Notification<?>> notification,
             final NormalizedNodeStreamWriter domWriter) {
-        return root.getNotification(notification).createWriter(domWriter);
+        return new BindingToNormalizedStreamWriter(root.getNotification(notification), domWriter);
     }
 
     @Override
     public BindingStreamEventWriter newActionInputWriter(final Class<? extends Action<?, ?, ?>> action,
             final NormalizedNodeStreamWriter domWriter) {
-        return getActionCodec(action).input().createWriter(domWriter);
+        return new BindingToNormalizedStreamWriter(getActionCodec(action).input(), domWriter);
     }
 
     @Override
     public BindingStreamEventWriter newActionOutputWriter(final Class<? extends Action<?, ?, ?>> action,
             final NormalizedNodeStreamWriter domWriter) {
-        return getActionCodec(action).output().createWriter(domWriter);
+        return new BindingToNormalizedStreamWriter(getActionCodec(action).output(), domWriter);
     }
 
     DataContainerCodecContext<?,?> getCodecContextNode(final InstanceIdentifier<?> binding,
@@ -256,11 +264,11 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
         NodeCodecContext currentNode = root;
         ListNodeCodecContext<?> currentList = null;
 
-        for (final YangInstanceIdentifier.PathArgument domArg : dom.getPathArguments()) {
+        for (var domArg : dom.getPathArguments()) {
             checkArgument(currentNode instanceof DataContainerCodecContext,
                 "Unexpected child of non-container node %s", currentNode);
-            final DataContainerCodecContext<?,?> previous = (DataContainerCodecContext<?, ?>) currentNode;
-            final NodeCodecContext nextNode = previous.yangPathArgumentChild(domArg);
+            final var previous = (DataContainerCodecContext<?, ?>) currentNode;
+            final var nextNode = previous.yangPathArgumentChild(domArg);
 
             /*
              * List representation in YANG Instance Identifier consists of two
@@ -281,17 +289,17 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
                 }
                 currentList = null;
                 currentNode = nextNode;
-            } else if (nextNode instanceof ListNodeCodecContext) {
+            } else if (nextNode instanceof ListNodeCodecContext<?> listNode) {
                 // We enter list, we do not update current Node yet,
                 // since we need to verify
-                currentList = (ListNodeCodecContext<?>) nextNode;
+                currentList = listNode;
             } else if (nextNode instanceof ChoiceNodeCodecContext) {
                 // We do not add path argument for choice, since
                 // it is not supported by binding instance identifier.
                 currentNode = nextNode;
-            } else if (nextNode instanceof DataContainerCodecContext) {
+            } else if (nextNode instanceof DataContainerCodecContext<?, ?> containerNode) {
                 if (bindingArguments != null) {
-                    bindingArguments.add(((DataContainerCodecContext<?, ?>) nextNode).getBindingPathArgument(domArg));
+                    bindingArguments.add(containerNode.getBindingPathArgument(domArg));
                 }
                 currentNode = nextNode;
             } else if (nextNode instanceof ValueNodeCodecContext) {
@@ -340,14 +348,14 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
     @Override
     public ImmutableMap<Method, ValueNodeCodecContext> getLeafNodes(final Class<?> type,
             final EffectiveStatement<?, ?> schema) {
-        final Map<String, DataSchemaNode> getterToLeafSchema = new HashMap<>();
+        final var getterToLeafSchema = new HashMap<String, DataSchemaNode>();
         for (var stmt : schema.effectiveSubstatements()) {
-            if (stmt instanceof TypedDataSchemaNode) {
-                putLeaf(getterToLeafSchema, (TypedDataSchemaNode) stmt);
-            } else if (stmt instanceof AnydataSchemaNode) {
-                putLeaf(getterToLeafSchema, (AnydataSchemaNode) stmt);
-            } else if (stmt instanceof AnyxmlSchemaNode) {
-                putLeaf(getterToLeafSchema, (AnyxmlSchemaNode) stmt);
+            if (stmt instanceof TypedDataSchemaNode typedSchema) {
+                putLeaf(getterToLeafSchema, typedSchema);
+            } else if (stmt instanceof AnydataSchemaNode anydataSchema) {
+                putLeaf(getterToLeafSchema, anydataSchema);
+            } else if (stmt instanceof AnyxmlSchemaNode anyxmlSchema) {
+                putLeaf(getterToLeafSchema, anyxmlSchema);
             }
         }
         return getLeafNodesUsingReflection(type, getterToLeafSchema);
@@ -359,33 +367,31 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
 
     private ImmutableMap<Method, ValueNodeCodecContext> getLeafNodesUsingReflection(
             final Class<?> parentClass, final Map<String, DataSchemaNode> getterToLeafSchema) {
-        final Map<Method, ValueNodeCodecContext> leaves = new HashMap<>();
-        for (final Method method : parentClass.getMethods()) {
+        final var leaves = new HashMap<Method, ValueNodeCodecContext>();
+        for (var method : parentClass.getMethods()) {
             // Only consider non-bridge methods with no arguments
             if (method.getParameterCount() == 0 && !method.isBridge()) {
                 final DataSchemaNode schema = getterToLeafSchema.get(method.getName());
 
                 final ValueNodeCodecContext valueNode;
-                if (schema instanceof LeafSchemaNode) {
-                    final LeafSchemaNode leafSchema = (LeafSchemaNode) schema;
-
+                if (schema instanceof LeafSchemaNode leafSchema) {
                     // FIXME: MDSAL-670: this is not right as we need to find a concrete type, but this may return
                     //                   Object.class
                     final Class<?> valueType = method.getReturnType();
-                    final IllegalArgumentCodec<Object, Object> codec = getCodec(valueType, leafSchema.getType());
+                    final ValueCodec<Object, Object> codec = getCodec(valueType, leafSchema.getType());
                     valueNode = LeafNodeCodecContext.of(leafSchema, codec, method.getName(), valueType,
                         context.getEffectiveModelContext());
-                } else if (schema instanceof LeafListSchemaNode) {
+                } else if (schema instanceof LeafListSchemaNode leafListSchema) {
                     final Optional<Type> optType = ClassLoaderUtils.getFirstGenericParameter(
                         method.getGenericReturnType());
                     checkState(optType.isPresent(), "Failed to find return type for %s", method);
 
                     final Class<?> valueType;
-                    final Type genericType = optType.get();
-                    if (genericType instanceof Class<?>) {
-                        valueType = (Class<?>) genericType;
-                    } else if (genericType instanceof ParameterizedType) {
-                        valueType = (Class<?>) ((ParameterizedType) genericType).getRawType();
+                    final Type genericType = optType.orElseThrow();
+                    if (genericType instanceof Class<?> clazz) {
+                        valueType = clazz;
+                    } else if (genericType instanceof ParameterizedType parameterized) {
+                        valueType = (Class<?>) parameterized.getRawType();
                     } else if (genericType instanceof WildcardType) {
                         // FIXME: MDSAL-670: this is not right as we need to find a concrete type
                         valueType = Object.class;
@@ -393,14 +399,13 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
                         throw new IllegalStateException("Unexpected return type " + genericType);
                     }
 
-                    final LeafListSchemaNode leafListSchema = (LeafListSchemaNode) schema;
-                    final IllegalArgumentCodec<Object, Object> codec = getCodec(valueType, leafListSchema.getType());
+                    final ValueCodec<Object, Object> codec = getCodec(valueType, leafListSchema.getType());
                     valueNode = new LeafSetNodeCodecContext(leafListSchema, codec, method.getName());
-                } else if (schema instanceof AnyxmlSchemaNode) {
-                    valueNode = new OpaqueNodeCodecContext.Anyxml<>((AnyxmlSchemaNode) schema, method.getName(),
+                } else if (schema instanceof AnyxmlSchemaNode anyxmlSchema) {
+                    valueNode = new OpaqueNodeCodecContext.Anyxml<>(anyxmlSchema, method.getName(),
                             opaqueReturnType(method), loader);
-                } else if (schema instanceof AnydataSchemaNode) {
-                    valueNode = new OpaqueNodeCodecContext.Anydata<>((AnydataSchemaNode) schema, method.getName(),
+                } else if (schema instanceof AnydataSchemaNode anydataSchema) {
+                    valueNode = new OpaqueNodeCodecContext.Anydata<>(anydataSchema, method.getName(),
                             opaqueReturnType(method), loader);
                 } else {
                     verify(schema == null, "Unhandled schema %s for method %s", schema, method);
@@ -415,14 +420,14 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
     }
 
     // FIXME: this is probably not right w.r.t. nulls
-    IllegalArgumentCodec<Object, Object> getCodec(final Class<?> valueType, final TypeDefinition<?> instantiatedType) {
+    ValueCodec<Object, Object> getCodec(final Class<?> valueType, final TypeDefinition<?> instantiatedType) {
         if (BaseIdentity.class.isAssignableFrom(valueType)) {
             @SuppressWarnings({ "unchecked", "rawtypes" })
-            final IllegalArgumentCodec<Object, Object> casted = (IllegalArgumentCodec) identityCodec;
+            final ValueCodec<Object, Object> casted = (ValueCodec) identityCodec;
             return casted;
         } else if (InstanceIdentifier.class.equals(valueType)) {
             @SuppressWarnings({ "unchecked", "rawtypes" })
-            final IllegalArgumentCodec<Object, Object> casted = (IllegalArgumentCodec) instanceIdentifierCodec;
+            final ValueCodec<Object, Object> casted = (ValueCodec) instanceIdentifierCodec;
             return casted;
         } else if (BindingReflections.isBindingClass(valueType)) {
             return getCodecForBindingClass(valueType, instantiatedType);
@@ -434,15 +439,15 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
 
     @SuppressWarnings("checkstyle:illegalCatch")
     // FIXME: this is probably not right w.r.t. nulls
-    private IllegalArgumentCodec<Object, Object> getCodecForBindingClass(final Class<?> valueType,
+    private ValueCodec<Object, Object> getCodecForBindingClass(final Class<?> valueType,
             final TypeDefinition<?> typeDef) {
         if (typeDef instanceof IdentityrefTypeDefinition) {
             return new CompositeValueCodec.OfIdentity(valueType, identityCodec);
         } else if (typeDef instanceof InstanceIdentifierTypeDefinition) {
             return new CompositeValueCodec.OfInstanceIdentifier(valueType, instanceIdentifierCodec);
-        } else if (typeDef instanceof UnionTypeDefinition) {
+        } else if (typeDef instanceof UnionTypeDefinition unionType) {
             try {
-                return UnionTypeCodec.of(valueType, (UnionTypeDefinition) typeDef, this);
+                return UnionTypeCodec.of(valueType, unionType, this);
             } catch (Exception e) {
                 throw new IllegalStateException("Unable to load codec for " + valueType, e);
             }
@@ -450,10 +455,10 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
             final var typeWithSchema = context.getTypeWithSchema(valueType);
             final var schema = typeWithSchema.statement();
             final TypeDefinition<?> def;
-            if (schema instanceof TypeDefinitionAware) {
-                def = ((TypeDefinitionAware) schema).getTypeDefinition();
-            } else if (schema instanceof TypeAware) {
-                def = ((TypeAware) schema).getType();
+            if (schema instanceof TypeDefinitionAware typeDefAware) {
+                def = typeDefAware.getTypeDefinition();
+            } else if (schema instanceof TypeAware typeAware) {
+                def = typeAware.getType();
             } else {
                 throw new IllegalStateException("Unexpected schema " + schema);
             }
@@ -468,7 +473,7 @@ public final class BindingCodecContext extends AbstractBindingNormalizedNodeSeri
                 Identifiable.class);
         checkState(optIdentifier.isPresent(), "Failed to find identifier for %s", listClz);
 
-        final Class<Identifier<?>> identifier = optIdentifier.get();
+        final Class<Identifier<?>> identifier = optIdentifier.orElseThrow();
         final Map<QName, ValueContext> valueCtx = new HashMap<>();
         for (final ValueNodeCodecContext leaf : getLeafNodes(identifier, type.statement()).values()) {
             final QName name = leaf.getDomPathArgument().getNodeType();