com.acme.ModuleConfiguration.java Source code

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Here is the source code for com.acme.ModuleConfiguration.java

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/*
 * Copyright 2014 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 com.acme;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.Profile;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.integration.annotation.Transformer;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.dsl.IntegrationFlow;
import org.springframework.integration.dsl.IntegrationFlows;
import org.springframework.integration.dsl.channel.MessageChannels;
import org.springframework.integration.transformer.GenericTransformer;
import org.springframework.messaging.MessageChannel;

/**
 * @author David Turanski
 */
@Configuration
@EnableIntegration
@Import({ PrefixAndSuffixConfiguration.class, PrefixOnlyConfiguration.class })
public class ModuleConfiguration {
    @Autowired
    GenericTransformer<String, String> transformer;

    @Bean
    public MessageChannel input() {
        return new DirectChannel();
    }

    @Bean
    MessageChannel output() {
        return new DirectChannel();
    }

    @Bean
    public IntegrationFlow myFlow() {
        return IntegrationFlows.from(this.input()).transform(transformer).channel(this.output()).get();
    }
}

@Configuration
@Profile({ "use-both", "default" })
class PrefixAndSuffixConfiguration {

    @Value("${prefix}")
    private String prefix;

    @Value("${suffix:}")
    private String suffix;

    @Bean
    GenericTransformer<String, String> transformer() {
        return new GenericTransformer<String, String>() {
            @Override
            public String transform(String payload) {
                return prefix + payload + suffix;
            }
        };
    }
}

@Configuration
@Profile("use-prefix")
class PrefixOnlyConfiguration {

    @Value("${prefix}")
    private String prefix;

    @Bean
    GenericTransformer<String, String> transformer() {
        return new GenericTransformer<String, String>() {
            @Override
            public String transform(String payload) {
                return prefix + payload;
            }
        };
    }
}