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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.dubbo.rpc;
import org.apache.dubbo.common.Experimental;
import java.util.Map;
import java.util.stream.Stream;
/**
* Invocation. (API, Prototype, NonThreadSafe)
*
* @serial Don't change the class name and package name.
* @see org.apache.dubbo.rpc.Invoker#invoke(Invocation)
* @see org.apache.dubbo.rpc.RpcInvocation
*/
public interface Invocation {
String getTargetServiceUniqueName();
String getProtocolServiceKey();
/**
* get method name.
*
* @return method name.
* @serial
*/
String getMethodName();
/**
* get the interface name
* @return
*/
String getServiceName();
/**
* get parameter types.
*
* @return parameter types.
* @serial
*/
Class[] getParameterTypes();
/**
* get parameter's signature, string representation of parameter types.
*
* @return parameter's signature
*/
default String[] getCompatibleParamSignatures() {
return Stream.of(getParameterTypes())
.map(Class::getName)
.toArray(String[]::new);
}
/**
* get arguments.
*
* @return arguments.
* @serial
*/
Object[] getArguments();
/**
* get attachments.
*
* @return attachments.
* @serial
*/
Map getAttachments();
@Experimental("Experiment api for supporting Object transmission")
Map getObjectAttachments();
void setAttachment(String key, String value);
@Experimental("Experiment api for supporting Object transmission")
void setAttachment(String key, Object value);
@Experimental("Experiment api for supporting Object transmission")
void setObjectAttachment(String key, Object value);
void setAttachmentIfAbsent(String key, String value);
@Experimental("Experiment api for supporting Object transmission")
void setAttachmentIfAbsent(String key, Object value);
@Experimental("Experiment api for supporting Object transmission")
void setObjectAttachmentIfAbsent(String key, Object value);
/**
* get attachment by key.
*
* @return attachment value.
* @serial
*/
String getAttachment(String key);
@Experimental("Experiment api for supporting Object transmission")
Object getObjectAttachment(String key);
/**
* get attachment by key with default value.
*
* @return attachment value.
* @serial
*/
String getAttachment(String key, String defaultValue);
@Experimental("Experiment api for supporting Object transmission")
Object getObjectAttachment(String key, Object defaultValue);
/**
* get the invoker in current context.
*
* @return invoker.
* @transient
*/
Invoker getInvoker();
Object put(Object key, Object value);
Object get(Object key);
Map