Examples with PluginCache org.apache.logging.log4j.core.config.plugins.processor.PluginCache used on opensource projects

Example 1 with PluginCache

use of org.apache.logging.log4j.core.config.plugins.processor.PluginCache in project logging-log4j2 by apache.

the class PluginRegistry method decodeCacheFiles.

private Map<String, List<PluginType<?>>> decodeCacheFiles(final ClassLoader loader) {
    final long startTime = System.nanoTime();
    final PluginCache cache = new PluginCache();
    try {
        final Enumeration<URL> resources = loader.getResources(PluginProcessor.PLUGIN_CACHE_FILE);
        if (resources == null) {
            LOGGER.info("Plugin preloads not available from class loader {}", loader);
        } else {
            cache.loadCacheFiles(resources);
        }
    } catch (final IOException ioe) {
        LOGGER.warn("Unable to preload plugins", ioe);
    }
    final Map<String, List<PluginType<?>>> newPluginsByCategory = new HashMap<>();
    int pluginCount = 0;
    for (final Map.Entry<String, Map<String, PluginEntry>> outer : cache.getAllCategories().entrySet()) {
        final String categoryLowerCase = outer.getKey();
        final List<PluginType<?>> types = new ArrayList<>(outer.getValue().size());
        newPluginsByCategory.put(categoryLowerCase, types);
        for (final Map.Entry<String, PluginEntry> inner : outer.getValue().entrySet()) {
            final PluginEntry entry = inner.getValue();
            final String className = entry.getClassName();
            try {
                final Class<?> clazz = loader.loadClass(className);
                final PluginType<?> type = new PluginType<>(entry, clazz, entry.getName());
                types.add(type);
                ++pluginCount;
            } catch (final ClassNotFoundException e) {
                LOGGER.info("Plugin [{}] could not be loaded due to missing classes.", className, e);
            } catch (final VerifyError e) {
                LOGGER.info("Plugin [{}] could not be loaded due to verification error.", className, e);
            }
        }
    }
    final long endTime = System.nanoTime();
    final DecimalFormat numFormat = new DecimalFormat("#0.000000");
    final double seconds = (endTime - startTime) * 1e-9;
    LOGGER.debug("Took {} seconds to load {} plugins from {}", numFormat.format(seconds), pluginCount, loader);
    return newPluginsByCategory;
}