com.acmemotors.integration.OBD2Serializer.java Source code

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Here is the source code for com.acmemotors.integration.OBD2Serializer.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.acmemotors.integration;

import org.springframework.core.serializer.Deserializer;
import org.springframework.core.serializer.Serializer;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * @author mminella
 */
public class OBD2Serializer implements Serializer<String>, Deserializer<String> {

    /**
     * Convert a CustomOrder object into a byte-stream
     *
     * @param outputStream
     * @throws IOException
     */
    @Override
    public void serialize(String command, OutputStream outputStream) throws IOException {
        outputStream.write(command.getBytes());
        outputStream.write("\r\n".getBytes());
        outputStream.flush();
    }

    /**
     * Convert a raw byte stream into a CustomOrder
     *
     * @param inputStream
     * @return
     * @throws IOException
     */
    @Override
    public String deserialize(InputStream inputStream) throws IOException {
        StringBuilder builder = new StringBuilder();

        int c;
        while (true) {
            c = inputStream.read();
            checkClosure(c);

            if (c == '\r') {
                c = '\n';
            }

            builder.append((char) c);

            if (c == '>') {
                break;
            }
        }

        return builder.toString();
    }

    /**
     * Check whether the byte passed in is the "closed socket" byte
     * Note, I put this in here just as an example, but you could just extend the
     * {@link org.springframework.integration.ip.tcp.serializer.AbstractByteArraySerializer} class
     * which has this method
     *
     * @param bite
     * @throws IOException
     */
    protected void checkClosure(int bite) throws IOException {
        if (bite < 0) {
            throw new IOException("Socket closed during message assembly");
        }
    }
}