/*
* Copyright 1999-2012 Alibaba Group.
*
* Licensed 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 com.alibaba.dubbo.validation.filter;
import com.alibaba.dubbo.common.Constants;
import com.alibaba.dubbo.common.extension.Activate;
import com.alibaba.dubbo.common.utils.ConfigUtils;
import com.alibaba.dubbo.rpc.Filter;
import com.alibaba.dubbo.rpc.Invocation;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.Result;
import com.alibaba.dubbo.rpc.RpcException;
import com.alibaba.dubbo.validation.Validation;
import com.alibaba.dubbo.validation.Validator;
/**
* ValidationFilter
*
* @author william.liangf
*/
@Activate(group = { Constants.CONSUMER, Constants.PROVIDER }, value = Constants.VALIDATION_KEY, order = 10000)
public class ValidationFilter implements Filter {
private Validation validation;
public void setValidation(Validation validation) {
this.validation = validation;
}
public Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException {
if (validation != null && ! invocation.getMethodName().startsWith("$")
&& ConfigUtils.isNotEmpty(invoker.getUrl().getMethodParameter(invocation.getMethodName(), Constants.VALIDATION_KEY))) {
Validator validator = validation.getValidator(invoker.getUrl());
if (validator != null) {
try {
validator.validate(invocation);
} catch (RpcException e) {
throw e;
} catch (Throwable t) {
throw new RpcException(t.getMessage(), t);
}
}
}
return invoker.invoke(invocation);
}
}