Fix wait for schema in BindingToNormalizedNodeCodec
[controller.git] / opendaylight / md-sal / sal-binding-broker / src / main / java / org / opendaylight / controller / md / sal / binding / impl / BindingToNormalizedNodeCodec.java
index 270ae504750dad1728dc77860f2238e4f3f76758..ee60afbfd3d0ed12587752ed6b0d85c779f6c116 100644 (file)
@@ -9,63 +9,173 @@ package org.opendaylight.controller.md.sal.binding.impl;
 
 import com.google.common.base.Function;
 import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
 import com.google.common.collect.ImmutableBiMap;
 import java.lang.reflect.Method;
+import java.net.URI;
+import java.util.AbstractMap.SimpleEntry;
+import java.util.Collection;
+import java.util.Date;
+import java.util.HashSet;
 import java.util.Iterator;
+import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
 import javax.annotation.Nonnull;
 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizationException;
 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizationOperation;
 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizer;
 import org.opendaylight.yangtools.binding.data.codec.api.BindingCodecTree;
 import org.opendaylight.yangtools.binding.data.codec.api.BindingCodecTreeFactory;
+import org.opendaylight.yangtools.binding.data.codec.api.BindingCodecTreeNode;
+import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeSerializer;
 import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
+import org.opendaylight.yangtools.binding.data.codec.impl.MissingSchemaException;
 import org.opendaylight.yangtools.sal.binding.generator.impl.GeneratedClassLoadingStrategy;
 import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
 import org.opendaylight.yangtools.yang.binding.BindingMapping;
+import org.opendaylight.yangtools.yang.binding.DataContainer;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.binding.Notification;
 import org.opendaylight.yangtools.yang.binding.RpcService;
 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
 import org.opendaylight.yangtools.yang.common.QNameModule;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
 import org.opendaylight.yangtools.yang.model.api.Module;
+import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-public class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory, SchemaContextListener, AutoCloseable {
+public final class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory, BindingNormalizedNodeSerializer, SchemaContextListener, AutoCloseable {
+
+    private static final long WAIT_DURATION_SEC = 5;
+    private static final Logger LOG = LoggerFactory.getLogger(BindingToNormalizedNodeCodec.class);
 
     private final BindingNormalizedNodeCodecRegistry codecRegistry;
-    private DataNormalizer legacyToNormalized;
+
     private final GeneratedClassLoadingStrategy classLoadingStrategy;
-    private BindingRuntimeContext runtimeContext;
+    private final FutureSchema futureSchema;
+    private final LoadingCache<InstanceIdentifier<?>, YangInstanceIdentifier> iiCache = CacheBuilder.newBuilder()
+            .softValues().build(new CacheLoader<InstanceIdentifier<?>, YangInstanceIdentifier>() {
+
+                @Override
+                public YangInstanceIdentifier load(final InstanceIdentifier<?> key) throws Exception {
+                    return toYangInstanceIdentifierBlocking(key);
+                }
+
+            });
+
+    private DataNormalizer legacyToNormalized;
 
     public BindingToNormalizedNodeCodec(final GeneratedClassLoadingStrategy classLoadingStrategy,
             final BindingNormalizedNodeCodecRegistry codecRegistry) {
-        this.classLoadingStrategy = classLoadingStrategy;
-        this.codecRegistry = codecRegistry;
+        this(classLoadingStrategy,codecRegistry,false);
 
     }
 
+    public BindingToNormalizedNodeCodec(final GeneratedClassLoadingStrategy classLoadingStrategy,
+            final BindingNormalizedNodeCodecRegistry codecRegistry,final boolean waitForSchema) {
+        this.classLoadingStrategy = Preconditions.checkNotNull(classLoadingStrategy,"classLoadingStrategy");
+        this.codecRegistry = Preconditions.checkNotNull(codecRegistry,"codecRegistry");
+        this.futureSchema = new FutureSchema(WAIT_DURATION_SEC, TimeUnit.SECONDS, waitForSchema);
+    }
+
+    YangInstanceIdentifier toYangInstanceIdentifierBlocking(final InstanceIdentifier<? extends DataObject> binding) {
+        try {
+            return codecRegistry.toYangInstanceIdentifier(binding);
+        } catch (final MissingSchemaException e) {
+            waitForSchema(decompose(binding),e);
+            return codecRegistry.toYangInstanceIdentifier(binding);
+        }
+    }
+
+    /**
+     * Translates supplied Binding Instance Identifier into NormalizedNode
+     * instance identifier.
+     *
+     * @param binding
+     *            Binding Instance Identifier
+     * @return DOM Instance Identifier
+     * @throws IllegalArgumentException
+     *             If supplied Instance Identifier is not valid.
+     */
     public YangInstanceIdentifier toNormalized(final InstanceIdentifier<? extends DataObject> binding) {
         return codecRegistry.toYangInstanceIdentifier(binding);
     }
 
-    @SuppressWarnings({ "unchecked", "rawtypes" })
-    public Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> toNormalizedNode(
-            final InstanceIdentifier<? extends DataObject> bindingPath, final DataObject bindingObject) {
-        return codecRegistry.toNormalizedNode((InstanceIdentifier) bindingPath, bindingObject);
+    @Override
+    public YangInstanceIdentifier toYangInstanceIdentifier(final InstanceIdentifier<?> binding) {
+        return codecRegistry.toYangInstanceIdentifier(binding);
+    }
+
+
+    YangInstanceIdentifier toYangInstanceIdentifierCached(final InstanceIdentifier<?> binding) {
+        return iiCache .getUnchecked(binding);
+    }
 
+    @Override
+    public <T extends DataObject> Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> toNormalizedNode(
+            final InstanceIdentifier<T> path, final T data) {
+        return codecRegistry.toNormalizedNode(path, data);
     }
 
+    /**
+     * Converts Binding Map.Entry to DOM Map.Entry
+     *
+     * Same as {@link #toNormalizedNode(InstanceIdentifier, DataObject)}.
+     *
+     * @param binding Map Entry with InstanceIdentifier as key and DataObject as value.
+     * @return DOM Map Entry with {@link YangInstanceIdentifier} as key and {@link NormalizedNode}
+     *         as value.
+     */
+    @SuppressWarnings({"unchecked", "rawtypes"})
     public Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> toNormalizedNode(
             final Entry<InstanceIdentifier<? extends DataObject>, DataObject> binding) {
-        return toNormalizedNode(binding.getKey(),binding.getValue());
+        return toNormalizedNode((InstanceIdentifier) binding.getKey(),binding.getValue());
+    }
+
+    @Override
+    public Entry<InstanceIdentifier<?>, DataObject> fromNormalizedNode(final YangInstanceIdentifier path,
+            final NormalizedNode<?, ?> data) {
+        return codecRegistry.fromNormalizedNode(path, data);
+    }
+
+    @Override
+    public Notification fromNormalizedNodeNotification(final SchemaPath path, final ContainerNode data) {
+        return codecRegistry.fromNormalizedNodeNotification(path, data);
+    }
+
+    @Override
+    public DataObject fromNormalizedNodeRpcData(final SchemaPath path, final ContainerNode data) {
+        return codecRegistry.fromNormalizedNodeRpcData(path, data);
+    }
+
+    @Override
+    public InstanceIdentifier<?> fromYangInstanceIdentifier(final YangInstanceIdentifier dom) {
+        return codecRegistry.fromYangInstanceIdentifier(dom);
+    }
+
+    @Override
+    public ContainerNode toNormalizedNodeNotification(final Notification data) {
+        return codecRegistry.toNormalizedNodeNotification(data);
+    }
+
+    @Override
+    public ContainerNode toNormalizedNodeRpcData(final DataContainer data) {
+        return codecRegistry.toNormalizedNodeRpcData(data);
     }
 
     /**
@@ -91,7 +201,7 @@ public class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory, Sc
     }
 
     public Optional<Entry<InstanceIdentifier<? extends DataObject>, DataObject>> toBinding(
-            final @Nonnull Entry<YangInstanceIdentifier, ? extends NormalizedNode<?, ?>> normalized)
+            @Nonnull final Entry<YangInstanceIdentifier, ? extends NormalizedNode<?, ?>> normalized)
                     throws DeserializationException {
         try {
             /*
@@ -107,7 +217,7 @@ public class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory, Sc
              * It is safe to  loose generic information and cast it to other generic signature.
              *
              */
-            @SuppressWarnings({ "unchecked", "rawtypes" })
+            @SuppressWarnings("unchecked")
             final Entry<InstanceIdentifier<? extends DataObject>, DataObject> binding = Entry.class.cast(codecRegistry.fromNormalizedNode(normalized.getKey(), normalized.getValue()));
             return Optional.fromNullable(binding);
         } catch (final IllegalArgumentException e) {
@@ -116,10 +226,11 @@ public class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory, Sc
     }
 
     @Override
-    public void onGlobalContextUpdated(final SchemaContext arg0) {
-        legacyToNormalized = new DataNormalizer (arg0);
-        runtimeContext = BindingRuntimeContext.create(classLoadingStrategy, arg0);
+    public void onGlobalContextUpdated(final SchemaContext schemaContext) {
+        legacyToNormalized = new DataNormalizer(schemaContext);
+        BindingRuntimeContext runtimeContext = BindingRuntimeContext.create(classLoadingStrategy, schemaContext);
         codecRegistry.onBindingRuntimeContextUpdated(runtimeContext);
+        futureSchema.onRuntimeContextUpdated(runtimeContext);
     }
 
     public <T extends DataObject> Function<Optional<NormalizedNode<?, ?>>, Optional<T>>  deserializeFunction(final InstanceIdentifier<T> path) {
@@ -161,8 +272,7 @@ public class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory, Sc
 
     // FIXME: This should be probably part of Binding Runtime context
     public ImmutableBiMap<Method, SchemaPath> getRpcMethodToSchemaPath(final Class<? extends RpcService> key) {
-        final QNameModule moduleName = BindingReflections.getQNameModule(key);
-        final Module module = runtimeContext.getSchemaContext().findModuleByNamespaceAndRevision(moduleName.getNamespace(), moduleName.getRevision());
+        final Module module = getModuleBlocking(key);
         final ImmutableBiMap.Builder<Method, SchemaPath> ret = ImmutableBiMap.<Method, SchemaPath>builder();
         try {
             for (final RpcDefinition rpcDef : module.getRpcs()) {
@@ -175,23 +285,103 @@ public class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory, Sc
         return ret.build();
     }
 
+    protected ImmutableBiMap<Method, RpcDefinition> getRpcMethodToSchema(final Class<? extends RpcService> key) {
+        final Module module = getModuleBlocking(key);
+        final ImmutableBiMap.Builder<Method, RpcDefinition> ret = ImmutableBiMap.builder();
+        try {
+            for (final RpcDefinition rpcDef : module.getRpcs()) {
+                final Method method = findRpcMethod(key, rpcDef);
+                ret.put(method, rpcDef);
+            }
+        } catch (final NoSuchMethodException e) {
+            throw new IllegalStateException("Rpc defined in model does not have representation in generated class.", e);
+        }
+        return ret.build();
+    }
+
+    private Module getModuleBlocking(final Class<?> modeledClass) {
+        final QNameModule moduleName = BindingReflections.getQNameModule(modeledClass);
+        final URI namespace = moduleName.getNamespace();
+        final Date revision = moduleName.getRevision();
+        Module module = runtimeContext().getSchemaContext().findModuleByNamespaceAndRevision(namespace, revision);
+        if(module == null && futureSchema.waitForSchema(namespace,revision)) {
+            module = runtimeContext().getSchemaContext().findModuleByNamespaceAndRevision(namespace, revision);
+        }
+        Preconditions.checkState(module != null, "Schema for %s is not available.", modeledClass);
+        return module;
+    }
+
+    private void waitForSchema(final Collection<Class<?>> binding, final MissingSchemaException e) {
+        LOG.warn("Blocking thread to wait for schema convergence updates for {} {}", futureSchema.getDuration(),
+                futureSchema.getUnit());
+        if(futureSchema.waitForSchema(binding)) {
+            return;
+        }
+
+        throw e;
+    }
+
     private Method findRpcMethod(final Class<? extends RpcService> key, final RpcDefinition rpcDef) throws NoSuchMethodException {
         final String methodName = BindingMapping.getMethodName(rpcDef.getQName());
         if(rpcDef.getInput() != null) {
-            final Class<?> inputClz = runtimeContext.getClassForSchema(rpcDef.getInput());
+            final Class<?> inputClz = runtimeContext().getClassForSchema(rpcDef.getInput());
             return key.getMethod(methodName, inputClz);
         }
         return key.getMethod(methodName);
     }
 
+    private BindingRuntimeContext runtimeContext() {
+        return futureSchema.runtimeContext();
+    }
+
     @Override
-    public BindingCodecTree create(BindingRuntimeContext context) {
+    public BindingCodecTree create(final BindingRuntimeContext context) {
         return codecRegistry.create(context);
     }
 
     @Override
-    public BindingCodecTree create(SchemaContext context, Class<?>... bindingClasses) {
+    public BindingCodecTree create(final SchemaContext context, final Class<?>... bindingClasses) {
         return codecRegistry.create(context, bindingClasses);
     }
 
+    @Nonnull
+    protected Map.Entry<InstanceIdentifier<?>, BindingCodecTreeNode<?>> getSubtreeCodec(
+            final YangInstanceIdentifier domIdentifier) {
+
+        final BindingCodecTree currentCodecTree = codecRegistry.getCodecContext();
+        final InstanceIdentifier<?> bindingPath = codecRegistry.fromYangInstanceIdentifier(domIdentifier);
+        Preconditions.checkArgument(bindingPath != null);
+        /**
+         * If we are able to deserialize YANG instance identifier, getSubtreeCodec must
+         * return non-null value.
+         */
+        final BindingCodecTreeNode<?> codecContext = currentCodecTree.getSubtreeCodec(bindingPath);
+        return new SimpleEntry<InstanceIdentifier<?>, BindingCodecTreeNode<?>>(bindingPath, codecContext);
+    }
+
+    @SuppressWarnings("unchecked")
+    public Set<Class<? extends Notification>> getNotificationClasses(final Set<SchemaPath> interested) {
+        final Set<Class<? extends Notification>> result = new HashSet<>();
+        final Set<NotificationDefinition> knownNotifications = runtimeContext().getSchemaContext().getNotifications();
+        for (final NotificationDefinition notification : knownNotifications) {
+            if (interested.contains(notification.getPath())) {
+                try {
+                    result.add((Class<? extends Notification>) runtimeContext().getClassForSchema(notification));
+                } catch (final IllegalStateException e) {
+                    // Ignore
+                    LOG.warn("Class for {} is currently not known.",notification.getPath(),e);
+                }
+            }
+        }
+        return result;
+    }
+
+    private static Collection<Class<?>> decompose(final InstanceIdentifier<?> path) {
+        final Set<Class<?>> clazzes = new HashSet<>();
+        for(final InstanceIdentifier.PathArgument arg : path.getPathArguments()) {
+            clazzes.add(arg.getType());
+        }
+        return clazzes;
+    }
+
 }