architecture.common.license.LicenseManager.java Source code

Introduction

Here is the source code for architecture.common.license.LicenseManager.java

Source

/*
 * Copyright 2012 Donghyuck, Son
 *
 * 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 architecture.common.license;

import java.io.IOException;
import java.io.Reader;
import java.text.DateFormat;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import architecture.common.exception.LicenseException;
import architecture.common.exception.LicenseInitializationException;
import architecture.common.license.io.LicenseReader;
import architecture.common.license.validator.Validator;
import architecture.common.util.L10NUtils;

/**
 * @author donghyuck
 */
public class LicenseManager {

    private static final DateFormat dateFormat = DateFormat.getDateTimeInstance(2, 3);

    protected static final Log log = LogFactory.getLog(LicenseManager.class);

    private License license;

    private LicenseProvider provider;

    public void initialize(LicenseProvider provider, Reader reader) throws LicenseException, IOException {
        this.provider = provider;
        license = null;
        LicenseReader licenseReader = new LicenseReader();
        License currentLicense = licenseReader.read(reader);
        Collection<LicenseException> exceptions = validate(provider, currentLicense);
        if (!exceptions.isEmpty()) {
            throw new LicenseInitializationException(L10NUtils.format("002112"), exceptions);
        } else {
            currentLicense.setVersion(provider.getVersion());
            license = currentLicense;
            return;
        }
    }

    public static Collection<LicenseException> validate(LicenseProvider provider, License license) {
        ArrayList<LicenseException> exceptions = new ArrayList<LicenseException>();
        for (Validator v : provider.getValidators()) {
            try {
                v.validate(license);
            } catch (LicenseException e) {
                log.fatal(e.getMessage(), e);
                exceptions.add(e);
            }
        }
        return exceptions;
    }

    public License getLicense() {
        return license;
    }

    public boolean isInitialized() {
        return license != null;
    }

    public boolean isModuleLicensed(String module) {
        for (License.Module m : provider.getInstalledModules()) {
            if (module.equals(m.getName()) && license.getModules().contains(m))
                return true;

        }
        return false;
    }

    public Collection<License.Module> getLicensedModules() {
        ArrayList<License.Module> list = new ArrayList<License.Module>();
        for (License.Module m : license.getModules()) {

            if (provider != null && provider.getInstalledModules().contains(m))
                list.add(m);
        }
        return Collections.unmodifiableCollection(list);
    }

    public static Date getDateProperty(String property, License license) {
        Date d = null;

        String dataString = (String) license.getProperties().get(property);
        if (dataString != null)
            try {
                d = dateFormat.parse(dataString);
            } catch (ParseException e) {
                log.fatal(e.getMessage(), e);
            }
        return d;
    }

    protected void setLicense(License license) {
        this.license = license;
    }

    protected LicenseProvider getProvider() {
        return provider;
    }

    protected void setProvider(LicenseProvider provider) {
        this.provider = provider;
    }
}