Examples with SingleFileNamingService net.i2p.client.naming.SingleFileNamingService used on opensource projects

Example 1 with SingleFileNamingService

use of net.i2p.client.naming.SingleFileNamingService in project i2p.i2p by i2p.

the class Daemon method update.

/**
 * Update the router and published address books using remote data from the
 * subscribed address books listed in subscriptions.
 * Merging of the "master" addressbook is NOT supported.
 *
 * @param router
 *            The NamingService to update, generally the root NamingService from the context.
 * @param published
 *            The published AddressBook. This address book is published on
 *            the user's eepsite so that others may subscribe to it.
 *            May be null.
 *            If non-null, overwrite with the new addressbook.
 * @param subscriptions
 *            A SubscriptionList listing the remote address books to update
 *            from.
 * @param log
 *            The log to write changes and conflicts to.
 *            May be null.
 * @since 0.8.7
 */
public static void update(NamingService router, File published, SubscriptionList subscriptions, Log log) {
    // If the NamingService is a database, we look up as we go.
    // If it is a text file, we do things differently, to avoid O(n**2) behavior
    // when scanning large subscription results (i.e. those that return the whole file, not just the new entries) -
    // we load all the known hostnames into a Set one time.
    // This also has the advantage of not flushing the NamingService's LRU cache.
    String nsClass = router.getClass().getSimpleName();
    boolean isTextFile = nsClass.equals("HostsTxtNamingService") || nsClass.equals("SingleFileNamingService");
    Set<String> knownNames;
    if (isTextFile) {
        // load the hostname set
        Properties opts = new Properties();
        opts.setProperty("file", "hosts.txt");
        knownNames = router.getNames(opts);
    } else {
        knownNames = null;
    }
    NamingService publishedNS;
    if (published != null) {
        publishedNS = new SingleFileNamingService(I2PAppContext.getGlobalContext(), published.getAbsolutePath());
    } else {
        publishedNS = null;
    }
    Iterator<AddressBook> iter = subscriptions.iterator();
    while (iter.hasNext()) {
        // yes, the EepGet fetch() is done in next()
        long start = System.currentTimeMillis();
        AddressBook addressbook = iter.next();
        // SubscriptionIterator puts in a dummy AddressBook with no location if no fetch is done
        if (DEBUG && log != null && addressbook.getLocation() != null) {
            long end = System.currentTimeMillis();
            log.append("Fetch of " + addressbook.getLocation() + " took " + (end - start));
        }
        Iterator<Map.Entry<String, HostTxtEntry>> iter2 = addressbook.iterator();
        try {
            update(router, knownNames, publishedNS, addressbook, iter2, log);
        } finally {
            if (iter2 instanceof HostTxtIterator)
                ((HostTxtIterator) iter2).close();
            addressbook.delete();
        }
    }
    // subscriptions
    subscriptions.write();
}