Mercurial > hg > release > thermostat-0.13
view web/server/src/main/java/com/redhat/thermostat/web/server/KnownDescriptorRegistry.java @ 1212:5107ada6cee5
Implement ACL based filters for queries.
Reviewed-by: ebaron
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-August/007739.html
PR1461
author | Severin Gehwolf <sgehwolf@redhat.com> |
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date | Thu, 25 Jul 2013 17:45:33 +0200 |
parents | 9ec44cd38946 |
children |
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/* * Copyright 2012, 2013 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat 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 * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.web.server; import java.util.Collections; import java.util.HashMap; import java.util.HashSet; import java.util.Map; import java.util.ServiceLoader; import java.util.Set; import com.redhat.thermostat.storage.core.auth.StatementDescriptorMetadataFactory; import com.redhat.thermostat.storage.core.auth.StatementDescriptorRegistration; /** * Registers trusted statement descriptors. * */ final class KnownDescriptorRegistry { private static final ServiceLoader<StatementDescriptorRegistration> TRUSTED_DESCS = ServiceLoader .load(StatementDescriptorRegistration.class); private final Set<String> trustedSet; private final Map<String, StatementDescriptorMetadataFactory> descriptorMetadataFactories; KnownDescriptorRegistry() { this(TRUSTED_DESCS); } KnownDescriptorRegistry(Iterable<StatementDescriptorRegistration> trustedDescs) { descriptorMetadataFactories = new HashMap<>(); trustedSet = new HashSet<>(); for (StatementDescriptorRegistration reg: trustedDescs) { Set<String> newCandidates = reg.getStatementDescriptors(); if (newCandidates.contains(null)) { throw new IllegalStateException("null statement descriptor not acceptable!"); } // prepare the reverse lookup metadata map StatementDescriptorMetadataFactory factory = (StatementDescriptorMetadataFactory) reg; for (String descKey: newCandidates) { descriptorMetadataFactories.put(descKey, factory); } trustedSet.addAll(newCandidates); } } final Set<String> getRegisteredDescriptors() { // return a read-only set of all descriptors return Collections.unmodifiableSet(trustedSet); } final Map<String, StatementDescriptorMetadataFactory> getDescriptorMetadataFactories() { // return a read-only mapping return Collections.unmodifiableMap(descriptorMetadataFactories); } }