org.alfresco.bm.devicesync.eventprocessor.AbstractCMISEventProcessor.java Source code

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Here is the source code for org.alfresco.bm.devicesync.eventprocessor.AbstractCMISEventProcessor.java

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/*
 * Copyright (C) 2005-2014 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco 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 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco 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 Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.bm.devicesync.eventprocessor;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Random;

import org.alfresco.bm.event.AbstractEventProcessor;
import org.alfresco.bm.event.Event;
import org.alfresco.bm.event.EventResult;
import org.alfresco.bm.file.TestFileService;
import org.apache.chemistry.opencmis.commons.exceptions.CmisRuntimeException;
import org.apache.chemistry.opencmis.commons.impl.jaxb.CmisException;
import org.apache.commons.lang3.exception.ExceptionUtils;

import com.mongodb.BasicDBObjectBuilder;
import com.mongodb.DBObject;

/**
 * Abstract event processing to handle CMIS-specific behaviour e.g. the
 * catch-and-report of {@link CmisException}.
 * 
 * @author Derek Hulley
 * @since 1.0
 */
public abstract class AbstractCMISEventProcessor extends AbstractEventProcessor {
    /**
     * {@inheritDoc}
     */
    protected abstract EventResult processCMISEvent(Event event) throws Exception;

    public final EventResult processEvent(Event event) throws Exception {
        try {
            return processCMISEvent(event);
        } catch (CmisRuntimeException e) {
            String error = e.getMessage();
            String stack = ExceptionUtils.getStackTrace(e);
            // Grab the CMIS information
            DBObject data = BasicDBObjectBuilder.start().append("msg", error).append("stack", stack)
                    .push("cmisFault").append("code", "" + e.getCode()) // BigInteger is not
                    // Serializable
                    .append("errorContent", e.getErrorContent()).pop().get();
            // Build failure result
            return new EventResult(data, false);
        } catch (RuntimeException e) {
            e.printStackTrace();
            return new EventResult(BasicDBObjectBuilder.start().append("msg", "Exception uploading document.")
                    .append("exception", e.getMessage()).get(), false);
        }
    }

    /** Some default search strings when no file is found with them */
    public static final String[] DEFAULT_SEARCH_STRINGS = new String[] { "\"quick\"", "Sa*", "alfresco", "ipsum",
            "\"ipsum lorum\"" };
    public static final String DEFAULT_SEARCH_TERMS_FILENAME = "searchterms.txt";

    /**
     * Static helper to find and extract a search term from the given file
     * 
     * @param testFileService
     *            the test files
     * @param searchTermsFilename
     *            the name of the file to find
     * @return a list of search terms (empty if there are none or the remote
     *         file does not exist)
     */
    public static String[] getSearchStrings(TestFileService testFileService, String searchTermsFilename) {
        File file = testFileService.getFileByName(searchTermsFilename);
        if (file == null) {
            return new String[0];
        }
        FileReader fr = null;
        try {
            fr = new FileReader(file);
            BufferedReader br = new BufferedReader(fr);
            ArrayList<String> strings = new ArrayList<String>(500);
            String line;
            while ((line = br.readLine()) != null) {
                strings.add(line);
            }
            // Check
            if (strings.size() == 0) {
                throw new RuntimeException("No search strings in file: " + searchTermsFilename);
            }
            // Push into an array
            return (String[]) strings.toArray(new String[strings.size()]);
        } catch (IOException e) {
            throw new RuntimeException(
                    "Failed to read search strings from file '" + file + "' loaded as '" + searchTermsFilename);
        } finally {
            if (fr != null) {
                try {
                    fr.close();
                } catch (IOException e) {
                }
            }
        }
    }

    private static final Random RANDOM = new Random();

    /**
     * Choose a random string from the search strings provided
     */
    public static String getRandomSearchString(String[] searchStrings) {
        if (searchStrings == null || searchStrings.length == 0) {
            throw new IllegalArgumentException("No search strings to choose from.");
        }
        return searchStrings[RANDOM.nextInt(searchStrings.length)];
    }
}