io.spring.batch.integration.ExecutionToTweetTransformer.java Source code

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Here is the source code for io.spring.batch.integration.ExecutionToTweetTransformer.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 io.spring.batch.integration;

import org.springframework.batch.core.BatchStatus;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.StepExecution;
import org.springframework.integration.annotation.Transformer;
import org.springframework.social.twitter.api.TweetData;
import org.springframework.stereotype.Component;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;

/**
 * @author mminella
 */
@Component
public class ExecutionToTweetTransformer {

    @Transformer(inputChannel = "jobRequests", outputChannel = "statusTweets")
    public TweetData transform(JobExecution execution) {
        DateFormat formatter = new SimpleDateFormat("yyyy/MM/dd hh:mm:ss.SS");
        StringBuilder builder = new StringBuilder();

        builder.append(execution.getJobInstance().getJobName());

        BatchStatus evaluatedStatus = endingBatchStatus(execution);
        if (evaluatedStatus == BatchStatus.COMPLETED || evaluatedStatus.compareTo(BatchStatus.STARTED) > 0) {
            builder.append(" has completed with a status of " + execution.getStatus().name() + " at "
                    + formatter.format(new Date()));
        } else {
            builder.append(" has started at " + formatter.format(new Date()));
        }

        return new TweetData(builder.toString());
    }

    private BatchStatus endingBatchStatus(JobExecution execution) {
        BatchStatus status = execution.getStatus();
        Collection<StepExecution> stepExecutions = execution.getStepExecutions();

        if (stepExecutions.size() > 0) {
            for (StepExecution stepExecution : stepExecutions) {
                if (stepExecution.getStatus().equals(BatchStatus.FAILED)) {
                    status = BatchStatus.FAILED;
                    break;
                } else {
                    status = BatchStatus.COMPLETED;
                }
            }
        }

        return status;
    }
}