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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.filter.tps;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.rpc.Invocation;
/**
* Provide boolean information whether a invocation of a provider service's methods or a particular method
* is allowed within a last invocation and current invocation.
*
* e.g. if tps for a method m1 is 5 for a minute then if 6th call is made within the span of 1 minute then 6th
* should not be allowed isAllowable will return false.
*
*/
public interface TPSLimiter {
/**
* judge if the current invocation is allowed by TPS rule
*
* @param url url
* @param invocation invocation
* @return true allow the current invocation, otherwise, return false
*/
boolean isAllowable(URL url, Invocation invocation);
}