io.spring.batch.EnrichmentProcessor.java Source code

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Here is the source code for io.spring.batch.EnrichmentProcessor.java

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/*
 * Copyright 2017 the original author or authors.
 *
 * 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 io.spring.batch;

import io.spring.domain.Foo;

import org.springframework.batch.item.ItemProcessor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.retry.annotation.CircuitBreaker;
import org.springframework.retry.annotation.Recover;
import org.springframework.web.client.RestTemplate;

/**
 * @author Michael Minella
 */
public class EnrichmentProcessor implements ItemProcessor<Foo, Foo> {

    @Autowired
    private RestTemplate restTemplate;

    @Recover
    public Foo fallback(Foo foo) {
        foo.setMessage("error");
        return foo;
    }

    @CircuitBreaker
    @Override
    public Foo process(Foo foo) throws Exception {
        ResponseEntity<String> responseEntity = this.restTemplate.exchange("http://rest-service/enrich",
                HttpMethod.GET, null, String.class);
        foo.setMessage(responseEntity.getBody());

        return foo;
    }
}