net.sf.taverna.t2.activities.beanshell.BeanshellActivityHealthChecker.java Source code

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Here is the source code for net.sf.taverna.t2.activities.beanshell.BeanshellActivityHealthChecker.java

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/*******************************************************************************
 * Copyright (C) 2007 The University of Manchester
 *
 *  Modifications to the initial code base are copyright of their
 *  respective authors, or their employers as appropriate.
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2.1 of
 *  the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 ******************************************************************************/
package net.sf.taverna.t2.activities.beanshell;

import java.io.StringReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.List;

import net.sf.taverna.t2.activities.dependencyactivity.AbstractAsynchronousDependencyActivity.FileExtFilter;
import net.sf.taverna.t2.visit.VisitReport;
import net.sf.taverna.t2.visit.VisitReport.Status;
import net.sf.taverna.t2.workflowmodel.Processor;
import net.sf.taverna.t2.workflowmodel.health.HealthCheck;
import net.sf.taverna.t2.workflowmodel.health.HealthChecker;
import bsh.ParseException;
import bsh.Parser;

import com.fasterxml.jackson.databind.JsonNode;

public class BeanshellActivityHealthChecker implements HealthChecker<BeanshellActivity> {

    public boolean canVisit(Object subject) {
        return (subject != null && subject instanceof BeanshellActivity);
    }

    public VisitReport visit(BeanshellActivity activity, List<Object> ancestors) {
        Object subject = (Processor) VisitReport.findAncestor(ancestors, Processor.class);
        if (subject == null) {
            // Fall back to using the activity itself as the subject of the reports
            subject = activity;
        }
        List<VisitReport> reports = new ArrayList<VisitReport>();

        String script = activity.getConfiguration().get("script").textValue();
        if (!script.trim().endsWith(";")) {
            /** Missing ; on last line is not allowed by Parser,
             * but is allowed by Interpreter.eval() used at runtime
             */
            script = script + ";";
        }
        Parser parser = new Parser(new StringReader(script));
        try {
            while (!parser.Line())
                ;
            reports.add(new VisitReport(HealthCheck.getInstance(), subject, "Script OK", HealthCheck.NO_PROBLEM,
                    Status.OK));
        } catch (ParseException e) {
            VisitReport report = new VisitReport(HealthCheck.getInstance(), subject, e.getMessage(),
                    HealthCheck.INVALID_SCRIPT, Status.SEVERE);
            report.setProperty("exception", e);
            reports.add(report);
        }

        // Check if we can find all the Beanshell's dependencies
        if (activity.getConfiguration().has("localDependency")) {
            LinkedHashSet<String> localDependencies = new LinkedHashSet<>();
            for (JsonNode localDependency : activity.getConfiguration().get("localDependency")) {
                localDependencies.add(localDependency.textValue());
            }

            String[] jarArray = activity.libDir.list(new FileExtFilter(".jar"));
            if (jarArray != null) {
                List<String> jarFiles = Arrays.asList(jarArray); // URLs of all jars found in the lib directory
                for (String jar : localDependencies) {
                    if (jarFiles.contains(jar)) {
                        localDependencies.remove(jar);
                    }
                }
            }
            if (localDependencies.isEmpty()) { // all dependencies found
                reports.add(new VisitReport(HealthCheck.getInstance(), subject, "Beanshell dependencies found",
                        HealthCheck.NO_PROBLEM, Status.OK));
            } else {
                VisitReport vr = new VisitReport(HealthCheck.getInstance(), subject,
                        "Beanshell dependencies missing", HealthCheck.MISSING_DEPENDENCY, Status.SEVERE);
                vr.setProperty("dependencies", localDependencies);
                vr.setProperty("directory", activity.libDir);
                reports.add(vr);
            }

        }
        Status status = VisitReport.getWorstStatus(reports);
        VisitReport report = new VisitReport(HealthCheck.getInstance(), subject, "Beanshell report",
                HealthCheck.NO_PROBLEM, status, reports);

        return report;

    }

    public boolean isTimeConsuming() {
        return false;
    }

}