com.alibaba.csp.sentinel.adapter.jaxrs.SentinelJaxRsClientTemplate Maven / Gradle / Ivy
/*
* Copyright 1999-2020 Alibaba Group Holding Ltd.
*
* 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
*
* https://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.csp.sentinel.adapter.jaxrs;
import com.alibaba.csp.sentinel.*;
import com.alibaba.csp.sentinel.adapter.jaxrs.config.SentinelJaxRsConfig;
import com.alibaba.csp.sentinel.adapter.jaxrs.future.FutureWrapper;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.alibaba.csp.sentinel.util.function.Supplier;
import javax.ws.rs.core.Response;
import java.util.concurrent.Future;
/**
* wrap jax-rs client execution with sentinel
*
* Response response = SentinelJaxRsClientTemplate.execute(resourceName, new Supplier() {
*
* @Override
* public Response get() {
* return client.target(host).path(url).request()
* .get();
* }
* });
*
* @author sea
*/
public class SentinelJaxRsClientTemplate {
/**
* execute supplier with sentinel
* @param resourceName
* @param supplier
* @return
*/
public static Response execute(String resourceName, Supplier supplier) {
Entry entry = null;
try {
entry = SphU.entry(resourceName, ResourceTypeConstants.COMMON_WEB, EntryType.OUT);
return supplier.get();
} catch (BlockException ex) {
return SentinelJaxRsConfig.getJaxRsFallback().fallbackResponse(resourceName, ex);
} finally {
System.out.println("entry exit");
if (entry != null) {
entry.exit();
}
}
}
/**
* execute supplier with sentinel
* @param resourceName
* @param supplier
* @return
*/
public static Future executeAsync(String resourceName, Supplier> supplier) {
try {
AsyncEntry entry = SphU.asyncEntry(resourceName, ResourceTypeConstants.COMMON_WEB, EntryType.OUT);
return new FutureWrapper<>(entry, supplier.get());
} catch (BlockException ex) {
return SentinelJaxRsConfig.getJaxRsFallback().fallbackFutureResponse(resourceName, ex);
}
}
}