2 * Copyright (c) 2015 Brocade Communications 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.controller.cluster.datastore;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import com.google.common.collect.ImmutableMap;
13 import com.google.common.collect.ImmutableSet;
14 import com.google.common.primitives.Primitives;
15 import java.beans.BeanInfo;
16 import java.beans.ConstructorProperties;
17 import java.beans.IntrospectionException;
18 import java.beans.Introspector;
19 import java.beans.MethodDescriptor;
20 import java.beans.PropertyDescriptor;
21 import java.lang.reflect.Constructor;
22 import java.lang.reflect.InvocationTargetException;
23 import java.lang.reflect.Method;
24 import java.util.AbstractMap.SimpleImmutableEntry;
25 import java.util.ArrayList;
26 import java.util.Collection;
27 import java.util.HashMap;
28 import java.util.List;
30 import java.util.Map.Entry;
32 import java.util.function.Function;
33 import org.apache.commons.lang3.StringUtils;
34 import org.apache.commons.text.WordUtils;
35 import org.checkerframework.checker.lock.qual.GuardedBy;
36 import org.opendaylight.controller.cluster.datastore.DatastoreContext.Builder;
37 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
38 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.distributed.datastore.provider.rev140612.DataStoreProperties;
40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.distributed.datastore.provider.rev140612.DataStorePropertiesContainer;
41 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
42 import org.opendaylight.yangtools.yang.common.QName;
43 import org.opendaylight.yangtools.yang.common.Uint16;
44 import org.opendaylight.yangtools.yang.common.Uint32;
45 import org.opendaylight.yangtools.yang.common.Uint64;
46 import org.opendaylight.yangtools.yang.common.Uint8;
47 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
48 import org.slf4j.Logger;
49 import org.slf4j.LoggerFactory;
52 * Introspects on a DatastoreContext instance to set its properties via reflection.
54 * @author Thomas Pantelis
56 public class DatastoreContextIntrospector {
57 private static final Logger LOG = LoggerFactory.getLogger(DatastoreContextIntrospector.class);
59 private static final Map<String, Entry<Class<?>, Method>> DATA_STORE_PROP_INFO = new HashMap<>();
61 private static final Map<Class<?>, Constructor<?>> CONSTRUCTORS = new HashMap<>();
63 private static final Map<Class<?>, Method> YANG_TYPE_GETTERS = new HashMap<>();
65 private static final Map<String, Method> BUILDER_SETTERS = new HashMap<>();
67 private static final ImmutableMap<Class<?>, Function<String, Object>> UINT_FACTORIES =
68 ImmutableMap.<Class<?>, Function<String, Object>>builder()
69 .put(Uint8.class, Uint8::valueOf)
70 .put(Uint16.class, Uint16::valueOf)
71 .put(Uint32.class, Uint32::valueOf)
72 .put(Uint64.class, Uint64::valueOf)
77 introspectDatastoreContextBuilder();
78 introspectDataStoreProperties();
79 introspectPrimitiveTypes();
80 } catch (final IntrospectionException e) {
81 LOG.error("Error initializing DatastoreContextIntrospector", e);
86 * Introspects each primitive wrapper (ie Integer, Long etc) and String type to find the
87 * constructor that takes a single String argument. For primitive wrappers, this constructor
88 * converts from a String representation.
90 // Disables "Either log or rethrow this exception" sonar warning
91 @SuppressWarnings("squid:S1166")
92 private static void introspectPrimitiveTypes() {
93 final Set<Class<?>> primitives = ImmutableSet.<Class<?>>builder().addAll(
94 Primitives.allWrapperTypes()).add(String.class).build();
95 for (final Class<?> primitive: primitives) {
97 processPropertyType(primitive);
98 } catch (final NoSuchMethodException e) {
99 // Ignore primitives that can't be constructed from a String, eg Character and Void.
100 } catch (SecurityException | IntrospectionException e) {
101 LOG.error("Error introspect primitive type {}", primitive, e);
107 * Introspects the DatastoreContext.Builder class to find all its setter methods that we will
108 * invoke via reflection. We can't use the bean Introspector here as the Builder setters don't
109 * follow the bean property naming convention, ie setter prefixed with "set", so look for all
110 * the methods that return Builder.
112 private static void introspectDatastoreContextBuilder() {
113 for (final Method method: Builder.class.getMethods()) {
114 if (Builder.class.equals(method.getReturnType())) {
115 BUILDER_SETTERS.put(method.getName(), method);
121 * Introspects the DataStoreProperties interface that is generated from the DataStoreProperties
122 * yang grouping. We use the bean Introspector to find the types of all the properties defined
123 * in the interface (this is the type returned from the getter method). For each type, we find
124 * the appropriate constructor that we will use.
126 private static void introspectDataStoreProperties() throws IntrospectionException {
127 final BeanInfo beanInfo = Introspector.getBeanInfo(DataStoreProperties.class);
128 for (final PropertyDescriptor desc: beanInfo.getPropertyDescriptors()) {
129 processDataStoreProperty(desc.getName(), desc.getPropertyType(), desc.getReadMethod());
132 // Getter methods that return Boolean and start with "is" instead of "get" aren't recognized as
133 // properties and thus aren't returned from getPropertyDescriptors. A getter starting with
134 // "is" is only supported if it returns primitive boolean. So we'll check for these via
135 // getMethodDescriptors.
136 for (final MethodDescriptor desc: beanInfo.getMethodDescriptors()) {
137 final String methodName = desc.getName();
138 if (Boolean.class.equals(desc.getMethod().getReturnType()) && methodName.startsWith("is")) {
139 final String propertyName = WordUtils.uncapitalize(methodName.substring(2));
140 processDataStoreProperty(propertyName, Boolean.class, desc.getMethod());
146 * Processes a property defined on the DataStoreProperties interface.
148 @SuppressWarnings("checkstyle:IllegalCatch")
149 private static void processDataStoreProperty(final String name, final Class<?> propertyType,
150 final Method readMethod) {
151 checkArgument(BUILDER_SETTERS.containsKey(name),
152 "DataStoreProperties property \"%s\" does not have corresponding setter in DatastoreContext.Builder",
155 processPropertyType(propertyType);
156 DATA_STORE_PROP_INFO.put(name, new SimpleImmutableEntry<>(propertyType, readMethod));
157 } catch (final Exception e) {
158 LOG.error("Error finding constructor for type {}", propertyType, e);
163 * Finds the appropriate constructor for the specified type that we will use to construct
166 private static void processPropertyType(final Class<?> propertyType)
167 throws NoSuchMethodException, SecurityException, IntrospectionException {
168 final Class<?> wrappedType = Primitives.wrap(propertyType);
169 if (CONSTRUCTORS.containsKey(wrappedType)) {
173 // If the type is a primitive (or String type), we look for the constructor that takes a
174 // single String argument, which, for primitives, validates and converts from a String
175 // representation which is the form we get on ingress.
176 if (propertyType.isPrimitive() || Primitives.isWrapperType(propertyType) || propertyType.equals(String.class)) {
177 CONSTRUCTORS.put(wrappedType, propertyType.getConstructor(String.class));
179 // This must be a yang-defined type. We need to find the constructor that takes a
180 // primitive as the only argument. This will be used to construct instances to perform
181 // validation (eg range checking). The yang-generated types have a couple single-argument
182 // constructors but the one we want has the bean ConstructorProperties annotation.
183 for (final Constructor<?> ctor: propertyType.getConstructors()) {
184 final ConstructorProperties ctorPropsAnnotation = ctor.getAnnotation(ConstructorProperties.class);
185 if (ctor.getParameterCount() == 1 && ctorPropsAnnotation != null) {
186 findYangTypeGetter(propertyType, ctorPropsAnnotation.value()[0]);
187 CONSTRUCTORS.put(propertyType, ctor);
195 * Finds the getter method on a yang-generated type for the specified property name.
197 private static void findYangTypeGetter(final Class<?> type, final String propertyName)
198 throws IntrospectionException {
199 for (final PropertyDescriptor desc: Introspector.getBeanInfo(type).getPropertyDescriptors()) {
200 if (desc.getName().equals(propertyName)) {
201 YANG_TYPE_GETTERS.put(type, desc.getReadMethod());
206 throw new IntrospectionException(String.format(
207 "Getter method for constructor property %s not found for YANG type %s",
208 propertyName, type));
211 @GuardedBy(value = "this")
212 private DatastoreContext context;
213 @GuardedBy(value = "this")
214 private Map<String, Object> currentProperties;
216 public DatastoreContextIntrospector(final DatastoreContext context,
217 final BindingNormalizedNodeSerializer bindingSerializer) {
218 final QName qname = BindingReflections.findQName(DataStorePropertiesContainer.class);
219 final DataStorePropertiesContainer defaultPropsContainer = (DataStorePropertiesContainer)
220 bindingSerializer.fromNormalizedNode(bindingSerializer.toYangInstanceIdentifier(
221 InstanceIdentifier.builder(DataStorePropertiesContainer.class).build()),
222 ImmutableNodes.containerNode(qname)).getValue();
224 final Builder builder = DatastoreContext.newBuilderFrom(context);
225 for (Entry<String, Entry<Class<?>, Method>> entry: DATA_STORE_PROP_INFO.entrySet()) {
228 value = entry.getValue().getValue().invoke(defaultPropsContainer);
229 } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
230 LOG.error("Error obtaining default value for property {}", entry.getKey(), e);
235 convertValueAndInvokeSetter(entry.getKey(), value, builder);
239 this.context = builder.build();
242 public synchronized DatastoreContext getContext() {
246 public DatastoreContextFactory newContextFactory() {
247 return new DatastoreContextFactory(this);
250 public synchronized DatastoreContext getShardDatastoreContext(final String forShardName) {
251 if (currentProperties == null) {
255 final Builder builder = DatastoreContext.newBuilderFrom(context);
256 final String dataStoreTypePrefix = context.getDataStoreName() + '.';
257 final String shardNamePrefix = forShardName + '.';
259 final List<String> keys = getSortedKeysByDatastoreType(currentProperties.keySet(), dataStoreTypePrefix);
261 for (String key: keys) {
262 final Object value = currentProperties.get(key);
263 if (key.startsWith(dataStoreTypePrefix)) {
264 key = key.replaceFirst(dataStoreTypePrefix, "");
267 if (key.startsWith(shardNamePrefix)) {
268 key = key.replaceFirst(shardNamePrefix, "");
269 convertValueAndInvokeSetter(key, value.toString(), builder);
273 return builder.build();
277 * Applies the given properties to the cached DatastoreContext and yields a new DatastoreContext
278 * instance which can be obtained via {@link #getContext()}.
280 * @param properties the properties to apply
281 * @return true if the cached DatastoreContext was updated, false otherwise.
283 public synchronized boolean update(final Map<String, Object> properties) {
284 currentProperties = null;
285 if (properties == null || properties.isEmpty()) {
289 LOG.debug("In update: properties: {}", properties);
291 final ImmutableMap.Builder<String, Object> mapBuilder = ImmutableMap.<String, Object>builder();
293 final Builder builder = DatastoreContext.newBuilderFrom(context);
295 final String dataStoreTypePrefix = context.getDataStoreName() + '.';
297 final List<String> keys = getSortedKeysByDatastoreType(properties.keySet(), dataStoreTypePrefix);
299 boolean updated = false;
300 for (String key: keys) {
301 final Object value = properties.get(key);
302 mapBuilder.put(key, value);
304 // If the key is prefixed with the data store type, strip it off.
305 if (key.startsWith(dataStoreTypePrefix)) {
306 key = key.replaceFirst(dataStoreTypePrefix, "");
309 if (convertValueAndInvokeSetter(key, value.toString(), builder)) {
314 currentProperties = mapBuilder.build();
317 context = builder.build();
323 private static ArrayList<String> getSortedKeysByDatastoreType(final Collection<String> inKeys,
324 final String dataStoreTypePrefix) {
325 // Sort the property keys by putting the names prefixed with the data store type last. This
326 // is done so data store specific settings are applied after global settings.
327 final ArrayList<String> keys = new ArrayList<>(inKeys);
328 keys.sort((key1, key2) -> key1.startsWith(dataStoreTypePrefix) ? 1 :
329 key2.startsWith(dataStoreTypePrefix) ? -1 : key1.compareTo(key2));
333 @SuppressWarnings("checkstyle:IllegalCatch")
334 private boolean convertValueAndInvokeSetter(final String inKey, final Object inValue, final Builder builder) {
335 final String key = convertToCamelCase(inKey);
338 // Convert the value to the right type.
339 final Object value = convertValue(key, inValue);
344 LOG.debug("Converted value for property {}: {} ({})",
345 key, value, value.getClass().getSimpleName());
347 // Call the setter method on the Builder instance.
348 final Method setter = BUILDER_SETTERS.get(key);
349 setter.invoke(builder, constructorValueRecursively(
350 Primitives.wrap(setter.getParameterTypes()[0]), value.toString()));
353 } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException
354 | InstantiationException e) {
355 LOG.error("Error converting value ({}) for property {}", inValue, key, e);
361 private static String convertToCamelCase(final String inString) {
362 String str = inString.trim();
363 if (StringUtils.contains(str, '-') || StringUtils.contains(str, ' ')) {
364 str = inString.replace('-', ' ');
365 str = WordUtils.capitalizeFully(str);
366 str = StringUtils.deleteWhitespace(str);
369 return StringUtils.uncapitalize(str);
372 private Object convertValue(final String name, final Object from)
373 throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
374 final Entry<Class<?>, Method> propertyInfo = DATA_STORE_PROP_INFO.get(name);
375 if (propertyInfo == null) {
376 LOG.debug("Property not found for {}", name);
380 final Class<?> propertyType = propertyInfo.getKey();
382 LOG.debug("Type for property {}: {}, converting value {} ({})",
383 name, propertyType.getSimpleName(), from, from.getClass().getSimpleName());
385 // Recurse the chain of constructors depth-first to get the resulting value. Eg, if the
386 // property type is the yang-generated NonZeroUint32Type, it's constructor takes a Long so
387 // we have to first construct a Long instance from the input value.
388 Object converted = constructorValueRecursively(propertyType, from);
390 // If the converted type is a yang-generated type, call the getter to obtain the actual value.
391 final Method getter = YANG_TYPE_GETTERS.get(converted.getClass());
392 if (getter != null) {
393 converted = getter.invoke(converted);
399 private Object constructorValueRecursively(final Class<?> toType, final Object fromValue)
400 throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
401 LOG.trace("convertValueRecursively - toType: {}, fromValue {} ({})",
402 toType.getSimpleName(), fromValue, fromValue.getClass().getSimpleName());
404 if (toType.equals(fromValue.getClass())) {
408 final Constructor<?> ctor = CONSTRUCTORS.get(toType);
410 if (fromValue instanceof String) {
411 final Function<String, Object> factory = UINT_FACTORIES.get(toType);
412 if (factory != null) {
413 return factory.apply((String) fromValue);
417 throw new IllegalArgumentException(String.format("Constructor not found for type %s", toType));
420 LOG.trace("Found {}", ctor);
421 Object value = fromValue;
423 // Once we find a constructor that takes the original type as an argument, we're done recursing.
424 if (!ctor.getParameterTypes()[0].equals(fromValue.getClass())) {
425 value = constructorValueRecursively(ctor.getParameterTypes()[0], fromValue);
428 return ctor.newInstance(value);