Package org.apache.airavata.gfac.handler

Source Code of org.apache.airavata.gfac.handler.GridFTPInputHandler

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* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
*   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.airavata.gfac.handler;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;

import org.apache.airavata.commons.gfac.type.ActualParameter;
import org.apache.airavata.commons.gfac.type.MappingFactory;
import org.apache.airavata.gfac.GFacException;
import org.apache.airavata.gfac.ToolsException;
import org.apache.airavata.gfac.context.JobExecutionContext;
import org.apache.airavata.gfac.context.MessageContext;
import org.apache.airavata.gfac.context.security.GSISecurityContext;
import org.apache.airavata.gfac.external.GridFtp;
import org.apache.airavata.gfac.utils.GFacUtils;
import org.apache.airavata.schemas.gfac.ApplicationDeploymentDescriptionType;
import org.apache.airavata.schemas.gfac.GlobusHostType;
import org.apache.airavata.schemas.gfac.HostDescriptionType;
import org.apache.airavata.schemas.gfac.URIArrayType;
import org.apache.airavata.schemas.gfac.URIParameterType;
import org.apache.airavata.schemas.gfac.UnicoreHostType;
import org.ietf.jgss.GSSCredential;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class GridFTPInputHandler implements GFacHandler {
    private static final Logger log = LoggerFactory.getLogger(AppDescriptorCheckHandler.class);

    public void invoke(JobExecutionContext jobExecutionContext) throws GFacHandlerException {
        log.info("Invoking GridFTPInputHandler ...");


        MessageContext inputNew = new MessageContext();
        try {
            MessageContext input = jobExecutionContext.getInMessageContext();
            Set<String> parameters = input.getParameters().keySet();
            for (String paramName : parameters) {
                ActualParameter actualParameter = (ActualParameter) input.getParameters().get(paramName);
                String paramValue = MappingFactory.toString(actualParameter);
                //TODO: Review this with type
                if ("URI".equals(actualParameter.getType().getType().toString())) {
                    ((URIParameterType) actualParameter.getType()).setValue(stageInputFiles(jobExecutionContext, paramValue));
                } else if ("URIArray".equals(actualParameter.getType().getType().toString())) {
                    List<String> split = Arrays.asList(paramValue.split(","));
                    List<String> newFiles = new ArrayList<String>();
                    for (String paramValueEach : split) {
                        newFiles.add(stageInputFiles(jobExecutionContext, paramValueEach));
                    }
                    ((URIArrayType) actualParameter.getType()).setValueArray(newFiles.toArray(new String[newFiles.size()]));
                }
                inputNew.getParameters().put(paramName, actualParameter);
            }
        } catch (Exception e) {
            log.error(e.getMessage());
            throw new GFacHandlerException("Error while input File Staging", jobExecutionContext, e, e.getLocalizedMessage());
        }
        jobExecutionContext.setInMessageContext(inputNew);
    }

    private static String stageInputFiles(JobExecutionContext jobExecutionContext, String paramValue) throws URISyntaxException, SecurityException, ToolsException, IOException,GFacException {
        URI gridftpURL = new URI(paramValue);

        String[] gridFTPEndpointArray = null;

        // not to download input files to the input dir if its http / gsiftp
        // but if local then yes
        boolean isInputNonLocal = true;

        //TODO: why it is tightly coupled with gridftp
//        GlobusHostType host = (GlobusHostType) jobExecutionContext.getApplicationContext().getHostDescription().getType();

        //TODO: make it more reusable
        HostDescriptionType hostType = jobExecutionContext.getApplicationContext().getHostDescription().getType();

        if(jobExecutionContext.getApplicationContext().getHostDescription().getType() instanceof GlobusHostType){
          gridFTPEndpointArray = ((GlobusHostType) hostType).getGridFTPEndPointArray();
        }
        else if (jobExecutionContext.getApplicationContext().getHostDescription().getType() instanceof UnicoreHostType){
          gridFTPEndpointArray = ((UnicoreHostType) hostType).getGridFTPEndPointArray();
          isInputNonLocal = false;
        }
        else {
          //TODO
        }


        ApplicationDeploymentDescriptionType app = jobExecutionContext.getApplicationContext().getApplicationDeploymentDescription().getType();
        GridFtp ftp = new GridFtp();
        URI destURI = null;
        GSSCredential gssCred = ((GSISecurityContext)jobExecutionContext.getSecurityContext(GSISecurityContext.GSI_SECURITY_CONTEXT)).getGssCredentails();

        for (String endpoint : gridFTPEndpointArray) {
            URI inputURI = GFacUtils.createGsiftpURI(endpoint, app.getInputDataDirectory());
            String fileName = new File(gridftpURL.getPath()).getName();
            String s = inputURI.getPath() + File.separator + fileName;
            //if user give a url just to refer an endpoint, not a web resource we are not doing any transfer
            if (fileName != null && !"".equals(fileName)) {
                destURI = GFacUtils.createGsiftpURI(endpoint, s);
                if (paramValue.startsWith("gsiftp")) {
                  // no need to do if it is unicore, as unicore will download this on user's behalf to the job space dir
                  if(isInputNonLocal) ftp.uploadFile(gridftpURL, destURI, gssCred);
                  else return paramValue;
                } else if (paramValue.startsWith("file")) {
                    String localFile = paramValue.substring(paramValue.indexOf(":") + 1, paramValue.length());
                    FileInputStream fis = null;
                    try {
                      fis = new FileInputStream(localFile);
                      ftp.uploadFile(destURI, gssCred, fis);
                    }finally {
                      fis.close();
                    }
                } else if (paramValue.startsWith("http")) {
                  // no need to do if it is unicore
                  if(isInputNonLocal) {
                    InputStream is = null;
                    try {
                      is = gridftpURL.toURL().openStream();
                      ftp.uploadFile(destURI, gssCred, (is));
                    }finally {
                      is.close();
                    }
                  } else {
                    // don't return destUri
                    return paramValue;
                  }

                } else {
                    //todo throw exception telling unsupported protocol
                    return paramValue;
                }
            } else {
                // When the given input is not a web resource but a URI type input, then we don't do any transfer just keep the same value as it isin the input
                return paramValue;
            }
        }
        return destURI.toString();
    }




}
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