com.twosigma.beaker.cpp.utils.CppKernel.java Source code

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Here is the source code for com.twosigma.beaker.cpp.utils.CppKernel.java

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/*
 *  Copyright 2015 TWO SIGMA OPEN SOURCE, LLC
 *
 *  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.twosigma.beaker.cpp.utils;

import java.io.IOException;
import java.util.ArrayList;
import java.io.FileOutputStream;
import java.io.BufferedOutputStream;
import java.io.ObjectOutputStream;

import com.twosigma.beaker.NamespaceClient;
import org.apache.http.client.ClientProtocolException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CppKernel {

    private static final Logger logger = LoggerFactory.getLogger(CppKernel.class.getName());

    public native void cInit(NamespaceClient nc);

    public native boolean cLoad(String fileName);

    public native Object cLoadAndRun(String fileName, String type);

    public static NamespaceClient nc;

    public CppKernel(String sessionId) {
        nc = NamespaceClient.getBeaker(sessionId);
    }

    static {
        System.load(System.getProperty("user.dir") + "/lib/libCRun.jnilib");
    }

    public static Object beakerGet(String name) {
        Object ret = null;
        try {
            ret = nc.get(name);
        } catch (ClientProtocolException ex) {
            logger.warn("Client Protocol Exception");
        } catch (IOException ex) {
            logger.warn("IOException!");
        }
        return ret;
    }

    public static int beakerSet(String name, Object value) {
        try {
            nc.set(name, value);
        } catch (ClientProtocolException ex) {
            logger.warn("Client Protocol Exception");
            return 0;
        } catch (IOException ex) {
            logger.warn("IOException!");
            return 0;
        }
        return 1;
    }

    public int execute(String mainCell, String type, ArrayList<String> otherCells) {
        String tmpDir = System.getenv("beaker_tmp_dir");

        for (String cell : otherCells) {
            cLoad(tmpDir + "/lib" + cell + ".so");
        }

        Object ret = cLoadAndRun(tmpDir + "/lib" + mainCell + ".so", type);

        try {
            FileOutputStream file = new FileOutputStream(tmpDir + "/" + mainCell + ".result");
            BufferedOutputStream buffer = new BufferedOutputStream(file);
            ObjectOutputStream output = new ObjectOutputStream(buffer);
            output.writeObject(ret);
            output.close();
        } catch (IOException ex) {
            logger.warn("Could not load file");
            return 1;
        }

        return 0;
    }
}