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SerializationContextImpl.java
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SerializationContextImpl.java
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package org.infinispan.protostream.impl;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.infinispan.protostream.BaseMarshaller;
import org.infinispan.protostream.DescriptorParser;
import org.infinispan.protostream.DescriptorParserException;
import org.infinispan.protostream.EnumMarshaller;
import org.infinispan.protostream.FileDescriptorSource;
import org.infinispan.protostream.MessageMarshaller;
import org.infinispan.protostream.RawProtobufMarshaller;
import org.infinispan.protostream.SerializationContext;
import org.infinispan.protostream.config.Configuration;
import org.infinispan.protostream.descriptors.Descriptor;
import org.infinispan.protostream.descriptors.EnumDescriptor;
import org.infinispan.protostream.descriptors.EnumValueDescriptor;
import org.infinispan.protostream.descriptors.FileDescriptor;
import org.infinispan.protostream.descriptors.GenericDescriptor;
import org.infinispan.protostream.descriptors.ResolutionContext;
import org.infinispan.protostream.impl.parser.SquareProtoParser;
import net.jcip.annotations.GuardedBy;
/**
* @author anistor@redhat.com
* @since 1.0
*/
public final class SerializationContextImpl implements SerializationContext {
private static final Log log = Log.LogFactory.getLog(SerializationContextImpl.class);
/**
* All state is protected by this RW lock.
*/
private final ReentrantReadWriteLock readWriteLock = new ReentrantReadWriteLock();
private final Lock readLock = readWriteLock.readLock();
private final Lock writeLock = readWriteLock.writeLock();
private final Configuration configuration;
private final DescriptorParser parser;
private final Map<String, FileDescriptor> fileDescriptors = new LinkedHashMap<>();
private final Map<Integer, GenericDescriptor> typeIds = new HashMap<>();
private final Map<String, GenericDescriptor> genericDescriptors = new HashMap<>();
private final Map<String, EnumValueDescriptor> enumValueDescriptors = new HashMap<>();
private final Map<String, BaseMarshallerDelegate<?>> marshallersByName = new ConcurrentHashMap<>();
private final Map<Class<?>, BaseMarshallerDelegate<?>> marshallersByClass = new ConcurrentHashMap<>();
private final Map<MarshallerProvider, MarshallerProvider> marshallerProviders = new ConcurrentHashMap<>();
public SerializationContextImpl(Configuration configuration) {
if (configuration == null) {
throw new IllegalArgumentException("configuration cannot be null");
}
this.configuration = configuration;
parser = new SquareProtoParser(configuration);
}
@Override
public Configuration getConfiguration() {
return configuration;
}
@Override
public Map<String, FileDescriptor> getFileDescriptors() {
readLock.lock();
try {
return Collections.unmodifiableMap(new HashMap<>(fileDescriptors));
} finally {
readLock.unlock();
}
}
@Override
public Map<String, GenericDescriptor> getGenericDescriptors() {
readLock.lock();
try {
return Collections.unmodifiableMap(new HashMap<>(genericDescriptors));
} finally {
readLock.unlock();
}
}
@Override
public void registerProtoFiles(FileDescriptorSource source) throws DescriptorParserException {
if (log.isDebugEnabled()) {
log.debugf("Registering proto files : %s", source.getFileDescriptors().keySet());
}
Map<String, FileDescriptor> fileDescriptorMap = parser.parse(source);
writeLock.lock();
try {
// unregister all types from the files that are being overwritten
for (String fileName : fileDescriptorMap.keySet()) {
FileDescriptor oldFileDescriptor = fileDescriptors.get(fileName);
if (oldFileDescriptor != null) {
unregisterFileDescriptorTypes(oldFileDescriptor);
}
}
fileDescriptors.putAll(fileDescriptorMap);
// resolve imports and types for all files
ResolutionContext resolutionContext = new ResolutionContext(source.getProgressCallback(), fileDescriptors, genericDescriptors, typeIds, enumValueDescriptors);
resolutionContext.resolve();
} finally {
writeLock.unlock();
}
}
@Override
public void unregisterProtoFile(String fileName) {
log.debugf("Unregistering proto file : %s", fileName);
writeLock.lock();
try {
FileDescriptor fileDescriptor = fileDescriptors.remove(fileName);
if (fileDescriptor != null) {
unregisterFileDescriptorTypes(fileDescriptor);
} else {
throw new IllegalArgumentException("File " + fileName + " does not exist");
}
} finally {
writeLock.unlock();
}
}
@GuardedBy("writeLock")
private void unregisterFileDescriptorTypes(FileDescriptor fileDescriptor) {
if (fileDescriptor.isResolved()) {
for (GenericDescriptor d : fileDescriptor.getTypes().values()) {
Integer typeId = d.getTypeId();
if (typeId != null) {
typeIds.remove(typeId);
}
if (d instanceof EnumDescriptor) {
for (EnumValueDescriptor ev : ((EnumDescriptor) d).getValues()) {
enumValueDescriptors.remove(ev.getScopedName());
}
}
}
genericDescriptors.keySet().removeAll(fileDescriptor.getTypes().keySet());
fileDescriptor.markUnresolved();
}
for (FileDescriptor fd : fileDescriptor.getDependants().values()) {
unregisterFileDescriptorTypes(fd);
}
}
@Override
public Descriptor getMessageDescriptor(String fullTypeName) {
GenericDescriptor descriptor = getDescriptorByName(fullTypeName);
if (!(descriptor instanceof Descriptor)) {
throw new IllegalArgumentException(fullTypeName + " is not a message type");
}
return (Descriptor) descriptor;
}
@Override
public EnumDescriptor getEnumDescriptor(String fullTypeName) {
GenericDescriptor descriptor = getDescriptorByName(fullTypeName);
if (!(descriptor instanceof EnumDescriptor)) {
throw new IllegalArgumentException(fullTypeName + " is not an enum type");
}
return (EnumDescriptor) descriptor;
}
@Override
public void registerMarshaller(BaseMarshaller<?> marshaller) {
if (marshaller == null) {
throw new IllegalArgumentException("marshaller argument cannot be null");
}
BaseMarshallerDelegate<?> marshallerDelegate = makeMarshallerDelegate(marshaller);
BaseMarshallerDelegate<?> existingDelegate = marshallersByName.put(marshaller.getTypeName(), marshallerDelegate);
if (existingDelegate != null) {
marshallersByClass.remove(existingDelegate.getMarshaller().getJavaClass());
}
marshallersByClass.put(marshaller.getJavaClass(), marshallerDelegate);
}
private BaseMarshallerDelegate<?> makeMarshallerDelegate(BaseMarshaller<?> marshaller) {
if (marshaller.getJavaClass().isEnum() && !(marshaller instanceof EnumMarshaller)) {
throw new IllegalArgumentException("Invalid marshaller (the produced class is a Java Enum but the marshaller is not an EnumMarshaller) : " + marshaller.getClass().getName());
}
// we try to validate first that a message descriptor exists
if (marshaller instanceof EnumMarshaller) {
if (!marshaller.getJavaClass().isEnum()) {
throw new IllegalArgumentException("Invalid enum marshaller (the produced class is not a Java Enum) : " + marshaller.getClass().getName());
}
EnumDescriptor enumDescriptor = getEnumDescriptor(marshaller.getTypeName());
return new EnumMarshallerDelegate<>((EnumMarshaller<?>) marshaller, enumDescriptor);
} else if (marshaller instanceof RawProtobufMarshaller) {
return new RawProtobufMarshallerDelegate<>(this, (RawProtobufMarshaller<?>) marshaller);
}
Descriptor messageDescriptor = getMessageDescriptor(marshaller.getTypeName());
return new MessageMarshallerDelegate<>(this, (MessageMarshaller<?>) marshaller, messageDescriptor);
}
@Override
public void unregisterMarshaller(BaseMarshaller<?> marshaller) {
if (marshaller == null) {
throw new IllegalArgumentException("marshaller argument cannot be null");
}
BaseMarshallerDelegate<?> marshallerDelegate = marshallersByName.get(marshaller.getTypeName());
if (marshallerDelegate == null || marshallerDelegate.getMarshaller() != marshaller) {
throw new IllegalArgumentException("The given marshaller was not previously registered with this SerializationContext");
}
marshallersByName.remove(marshaller.getTypeName());
marshallersByClass.remove(marshaller.getJavaClass());
}
@Override
public void registerMarshallerProvider(MarshallerProvider marshallerProvider) {
if (marshallerProvider == null) {
throw new IllegalArgumentException("marshallerProvider argument cannot be null");
}
marshallerProviders.put(marshallerProvider, marshallerProvider);
}
@Override
public void unregisterMarshallerProvider(MarshallerProvider marshallerProvider) {
if (marshallerProvider == null) {
throw new IllegalArgumentException("marshallerProvider argument cannot be null");
}
marshallerProviders.remove(marshallerProvider);
}
@Override
public boolean canMarshall(Class<?> javaClass) {
return marshallersByClass.containsKey(javaClass) || getMarshallerFromProvider(javaClass) != null;
}
@Override
public boolean canMarshall(String fullTypeName) {
return marshallersByName.containsKey(fullTypeName) || getMarshallerFromProvider(fullTypeName) != null;
}
@Override
public <T> BaseMarshaller<T> getMarshaller(String fullTypeName) {
return this.<T>getMarshallerDelegate(fullTypeName).getMarshaller();
}
@Override
public <T> BaseMarshaller<T> getMarshaller(Class<T> clazz) {
return getMarshallerDelegate(clazz).getMarshaller();
}
public <T> BaseMarshallerDelegate<T> getMarshallerDelegate(String descriptorFullName) {
BaseMarshallerDelegate<T> marshallerDelegate = (BaseMarshallerDelegate<T>) marshallersByName.get(descriptorFullName);
if (marshallerDelegate == null) {
BaseMarshaller<?> marshaller = getMarshallerFromProvider(descriptorFullName);
if (marshaller == null) {
throw new IllegalArgumentException("No marshaller registered for Protobuf type " + descriptorFullName);
}
marshallerDelegate = (BaseMarshallerDelegate<T>) makeMarshallerDelegate(marshaller);
}
return marshallerDelegate;
}
public <T> BaseMarshallerDelegate<T> getMarshallerDelegate(Class<T> javaClass) {
BaseMarshallerDelegate<T> marshallerDelegate = (BaseMarshallerDelegate<T>) marshallersByClass.get(javaClass);
if (marshallerDelegate == null) {
BaseMarshaller<?> marshaller = getMarshallerFromProvider(javaClass);
if (marshaller == null) {
throw new IllegalArgumentException("No marshaller registered for Java type " + javaClass.getName());
}
marshallerDelegate = (BaseMarshallerDelegate<T>) makeMarshallerDelegate(marshaller);
}
return marshallerDelegate;
}
private BaseMarshaller<?> getMarshallerFromProvider(Class<?> javaClass) {
if (!marshallerProviders.isEmpty()) {
for (MarshallerProvider mp : marshallerProviders.keySet()) {
BaseMarshaller<?> marshaller = mp.getMarshaller(javaClass);
if (marshaller != null) {
return marshaller;
}
}
}
return null;
}
private BaseMarshaller<?> getMarshallerFromProvider(String fullTypeName) {
if (!marshallerProviders.isEmpty()) {
for (MarshallerProvider mp : marshallerProviders.keySet()) {
BaseMarshaller<?> marshaller = mp.getMarshaller(fullTypeName);
if (marshaller != null) {
return marshaller;
}
}
}
return null;
}
@Override
public String getTypeNameById(Integer typeId) {
return getDescriptorByTypeId(typeId).getFullName();
}
@Override
public Integer getTypeIdByName(String fullTypeName) {
return getDescriptorByName(fullTypeName).getTypeId();
}
@Override
public GenericDescriptor getDescriptorByName(String fullTypeName) {
if (fullTypeName == null) {
throw new IllegalArgumentException("Type name cannot be null");
}
readLock.lock();
try {
GenericDescriptor descriptor = genericDescriptors.get(fullTypeName);
if (descriptor == null) {
throw new IllegalArgumentException("Unknown type name : " + fullTypeName);
}
return descriptor;
} finally {
readLock.unlock();
}
}
@Override
public GenericDescriptor getDescriptorByTypeId(Integer typeId) {
if (typeId == null) {
throw new IllegalArgumentException("Type id cannot be null");
}
readLock.lock();
try {
GenericDescriptor descriptor = typeIds.get(typeId);
if (descriptor == null) {
throw new IllegalArgumentException("Unknown type id : " + typeId);
}
return descriptor;
} finally {
readLock.unlock();
}
}
}