2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.config.manager.impl;
10 import com.google.common.collect.Maps;
11 import org.opendaylight.controller.config.api.ConflictingVersionException;
12 import org.opendaylight.controller.config.api.ModuleIdentifier;
13 import org.opendaylight.controller.config.api.RuntimeBeanRegistratorAwareModule;
14 import org.opendaylight.controller.config.api.ServiceReferenceWritableRegistry;
15 import org.opendaylight.controller.config.api.ValidationException;
16 import org.opendaylight.controller.config.api.jmx.CommitStatus;
17 import org.opendaylight.controller.config.api.jmx.ObjectNameUtil;
18 import org.opendaylight.controller.config.manager.impl.dependencyresolver.DestroyedModule;
19 import org.opendaylight.controller.config.manager.impl.dependencyresolver.ModuleInternalTransactionalInfo;
20 import org.opendaylight.controller.config.manager.impl.dynamicmbean.DynamicReadableWrapper;
21 import org.opendaylight.controller.config.manager.impl.factoriesresolver.HierarchicalConfigMBeanFactoriesHolder;
22 import org.opendaylight.controller.config.manager.impl.factoriesresolver.ModuleFactoriesResolver;
23 import org.opendaylight.controller.config.manager.impl.jmx.BaseJMXRegistrator;
24 import org.opendaylight.controller.config.manager.impl.jmx.ModuleJMXRegistrator;
25 import org.opendaylight.controller.config.manager.impl.jmx.RootRuntimeBeanRegistratorImpl;
26 import org.opendaylight.controller.config.manager.impl.jmx.TransactionJMXRegistrator;
27 import org.opendaylight.controller.config.manager.impl.osgi.BeanToOsgiServiceManager;
28 import org.opendaylight.controller.config.manager.impl.osgi.BeanToOsgiServiceManager.OsgiRegistration;
29 import org.opendaylight.controller.config.manager.impl.util.LookupBeansUtil;
30 import org.opendaylight.controller.config.manager.impl.util.ModuleQNameUtil;
31 import org.opendaylight.controller.config.spi.Module;
32 import org.opendaylight.controller.config.spi.ModuleFactory;
33 import org.opendaylight.yangtools.yang.data.impl.codec.CodecRegistry;
34 import org.osgi.framework.BundleContext;
35 import org.slf4j.Logger;
36 import org.slf4j.LoggerFactory;
38 import javax.annotation.concurrent.GuardedBy;
39 import javax.annotation.concurrent.NotThreadSafe;
40 import javax.annotation.concurrent.ThreadSafe;
41 import javax.management.InstanceAlreadyExistsException;
42 import javax.management.InstanceNotFoundException;
43 import javax.management.MBeanServer;
44 import javax.management.MBeanServerFactory;
45 import javax.management.ObjectName;
46 import java.util.ArrayList;
47 import java.util.Collection;
48 import java.util.Collections;
49 import java.util.HashMap;
50 import java.util.Iterator;
51 import java.util.LinkedList;
52 import java.util.List;
54 import java.util.Map.Entry;
58 * Singleton that is responsible for creating and committing Config
59 * Transactions. It is registered in Platform MBean Server.
62 public class ConfigRegistryImpl implements AutoCloseable, ConfigRegistryImplMXBean {
63 private static final Logger logger = LoggerFactory.getLogger(ConfigRegistryImpl.class);
65 private final ModuleFactoriesResolver resolver;
66 private final MBeanServer configMBeanServer;
67 private final CodecRegistry codecRegistry;
70 private long version = 0;
72 private long versionCounter = 0;
75 * Contains current configuration in form of {moduleName:{instanceName,read
76 * only module}} for copying state to new transaction. Each running module
77 * is present just once, no matter how many interfaces it exposes.
80 private final ConfigHolder currentConfig = new ConfigHolder();
83 * Will return true unless there was a transaction that succeeded during
84 * validation but failed in second phase of commit. In this case the server
85 * is unstable and its state is undefined.
88 private boolean isHealthy = true;
91 * Holds Map<transactionName, transactionController> and purges it each time
92 * its content is requested.
95 private final TransactionsHolder transactionsHolder = new TransactionsHolder();
97 private final BaseJMXRegistrator baseJMXRegistrator;
99 private final BeanToOsgiServiceManager beanToOsgiServiceManager;
101 // internal jmx server for read only beans
102 private final MBeanServer registryMBeanServer;
103 // internal jmx server shared by all transactions
104 private final MBeanServer transactionsMBeanServer;
106 // Used for finding new factory instances for default module functionality
108 private List<ModuleFactory> lastListOfFactories = Collections.emptyList();
110 @GuardedBy("this") // switched in every 2ndPC
111 private CloseableServiceReferenceReadableRegistry readableSRRegistry = ServiceReferenceRegistryImpl.createInitialSRLookupRegistry();
114 public ConfigRegistryImpl(ModuleFactoriesResolver resolver,
115 MBeanServer configMBeanServer, CodecRegistry codecRegistry) {
116 this(resolver, configMBeanServer,
117 new BaseJMXRegistrator(configMBeanServer), codecRegistry);
121 public ConfigRegistryImpl(ModuleFactoriesResolver resolver,
122 MBeanServer configMBeanServer,
123 BaseJMXRegistrator baseJMXRegistrator, CodecRegistry codecRegistry) {
124 this.resolver = resolver;
125 this.beanToOsgiServiceManager = new BeanToOsgiServiceManager();
126 this.configMBeanServer = configMBeanServer;
127 this.baseJMXRegistrator = baseJMXRegistrator;
128 this.codecRegistry = codecRegistry;
129 this.registryMBeanServer = MBeanServerFactory
130 .createMBeanServer("ConfigRegistry" + configMBeanServer.getDefaultDomain());
131 this.transactionsMBeanServer = MBeanServerFactory
132 .createMBeanServer("ConfigTransactions" + configMBeanServer.getDefaultDomain());
136 * Create new {@link ConfigTransactionControllerImpl }
139 public synchronized ObjectName beginConfig() {
140 return beginConfig(false);
144 * @param blankTransaction true if this transaction is created automatically by
145 * org.opendaylight.controller.config.manager.impl.osgi.BlankTransactionServiceTracker
147 public synchronized ObjectName beginConfig(boolean blankTransaction) {
148 return beginConfigInternal(blankTransaction).getControllerObjectName();
151 private synchronized ConfigTransactionControllerInternal beginConfigInternal(boolean blankTransaction) {
153 final String transactionName = "ConfigTransaction-" + version + "-" + versionCounter;
155 TransactionJMXRegistratorFactory factory = new TransactionJMXRegistratorFactory() {
157 public TransactionJMXRegistrator create() {
158 return baseJMXRegistrator.createTransactionJMXRegistrator(transactionName);
162 Map<String, Map.Entry<ModuleFactory, BundleContext>> allCurrentFactories = Collections.unmodifiableMap(
163 resolver.getAllFactories());
165 // closed by transaction controller
166 ConfigTransactionLookupRegistry txLookupRegistry = new ConfigTransactionLookupRegistry(new TransactionIdentifier(
167 transactionName), factory, allCurrentFactories);
168 ServiceReferenceWritableRegistry writableRegistry = ServiceReferenceRegistryImpl.createSRWritableRegistry(
169 readableSRRegistry, txLookupRegistry, allCurrentFactories);
171 ConfigTransactionControllerInternal transactionController = new ConfigTransactionControllerImpl(
172 txLookupRegistry, version, codecRegistry,
173 versionCounter, allCurrentFactories, transactionsMBeanServer,
174 configMBeanServer, blankTransaction, writableRegistry);
176 txLookupRegistry.registerMBean(transactionController, transactionController.getControllerObjectName());
177 } catch (InstanceAlreadyExistsException e) {
178 throw new IllegalStateException(e);
180 transactionController.copyExistingModulesAndProcessFactoryDiff(currentConfig.getEntries(), lastListOfFactories);
181 transactionsHolder.add(transactionName, transactionController, txLookupRegistry);
182 return transactionController;
189 @SuppressWarnings("PMD.AvoidCatchingThrowable")
190 public synchronized CommitStatus commitConfig(ObjectName transactionControllerON)
191 throws ConflictingVersionException, ValidationException {
192 final String transactionName = ObjectNameUtil
193 .getTransactionName(transactionControllerON);
194 logger.trace("About to commit {}. Current parentVersion: {}, versionCounter {}", transactionName, version, versionCounter);
196 // find ConfigTransactionController
197 Map<String, Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry>> transactions = transactionsHolder.getCurrentTransactions();
198 Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry> configTransactionControllerEntry = transactions.get(transactionName);
199 if (configTransactionControllerEntry == null) {
200 throw new IllegalArgumentException(String.format(
201 "Transaction with name '%s' not found", transactionName));
203 ConfigTransactionControllerInternal configTransactionController = configTransactionControllerEntry.getKey();
204 // check optimistic lock
205 if (version != configTransactionController.getParentVersion()) {
206 throw new ConflictingVersionException(
208 "Optimistic lock failed. Expected parent version %d, was %d",
210 configTransactionController.getParentVersion()));
212 // optimistic lock ok
214 CommitInfo commitInfo = configTransactionController.validateBeforeCommitAndLockTransaction();
215 lastListOfFactories = Collections.unmodifiableList(configTransactionController.getCurrentlyRegisteredFactories());
216 // non recoverable from here:
218 return secondPhaseCommit(configTransactionController, commitInfo, configTransactionControllerEntry.getValue());
219 } catch (Throwable t) { // some libs throw Errors: e.g.
220 // javax.xml.ws.spi.FactoryFinder$ConfigurationError
222 logger.error("Configuration Transaction failed on 2PC, server is unhealthy", t);
223 if (t instanceof RuntimeException) {
224 throw (RuntimeException) t;
225 } else if (t instanceof Error) {
228 throw new RuntimeException(t);
233 private CommitStatus secondPhaseCommit(ConfigTransactionControllerInternal configTransactionController,
234 CommitInfo commitInfo, ConfigTransactionLookupRegistry txLookupRegistry) {
236 // close instances which were destroyed by the user, including
237 // (hopefully) runtime beans
238 for (DestroyedModule toBeDestroyed : commitInfo
239 .getDestroyedFromPreviousTransactions()) {
240 toBeDestroyed.close(); // closes instance (which should close
241 // runtime jmx registrator),
242 // also closes osgi registration and ModuleJMXRegistrator
244 currentConfig.remove(toBeDestroyed.getIdentifier());
247 // set RuntimeBeanRegistrators on beans implementing
248 // RuntimeBeanRegistratorAwareModule, each module
249 // should have exactly one runtime jmx registrator.
250 Map<ModuleIdentifier, RootRuntimeBeanRegistratorImpl> runtimeRegistrators = new HashMap<>();
251 for (ModuleInternalTransactionalInfo entry : commitInfo.getCommitted()
253 RootRuntimeBeanRegistratorImpl runtimeBeanRegistrator;
254 if (entry.hasOldModule() == false) {
255 runtimeBeanRegistrator = baseJMXRegistrator
256 .createRuntimeBeanRegistrator(entry.getIdentifier());
258 // reuse old JMX registrator
259 runtimeBeanRegistrator = entry.getOldInternalInfo()
260 .getRuntimeBeanRegistrator();
262 // set runtime jmx registrator if required
263 Module module = entry.getProxiedModule();
264 if (module instanceof RuntimeBeanRegistratorAwareModule) {
265 ((RuntimeBeanRegistratorAwareModule) module)
266 .setRuntimeBeanRegistrator(runtimeBeanRegistrator);
268 // save it to info so it is accessible afterwards
269 runtimeRegistrators.put(entry.getIdentifier(), runtimeBeanRegistrator);
272 // can register runtime beans
273 List<ModuleIdentifier> orderedModuleIdentifiers = configTransactionController.secondPhaseCommit();
274 txLookupRegistry.close();
275 configTransactionController.close();
277 // copy configuration to read only mode
278 List<ObjectName> newInstances = new LinkedList<>();
279 List<ObjectName> reusedInstances = new LinkedList<>();
280 List<ObjectName> recreatedInstances = new LinkedList<>();
282 Map<Module, ModuleInternalInfo> newConfigEntries = new HashMap<>();
285 for (ModuleIdentifier moduleIdentifier : orderedModuleIdentifiers) {
286 ModuleInternalTransactionalInfo entry = commitInfo.getCommitted()
287 .get(moduleIdentifier);
289 throw new NullPointerException("Module not found "
293 ObjectName primaryReadOnlyON = ObjectNameUtil
294 .createReadOnlyModuleON(moduleIdentifier);
296 // determine if current instance was recreated or reused or is new
298 // rules for closing resources:
299 // osgi registration - will be reused if possible.
300 // module jmx registration - will be (re)created every time, needs
302 // runtime jmx registration - should be taken care of by module
304 // instance - is closed only if it was destroyed
305 ModuleJMXRegistrator newModuleJMXRegistrator = baseJMXRegistrator
306 .createModuleJMXRegistrator();
308 OsgiRegistration osgiRegistration = null;
309 AutoCloseable instance = entry.getProxiedModule().getInstance();
310 if (entry.hasOldModule()) {
311 ModuleInternalInfo oldInternalInfo = entry.getOldInternalInfo();
312 DynamicReadableWrapper oldReadableConfigBean = oldInternalInfo.getReadableModule();
313 currentConfig.remove(entry.getIdentifier());
315 // test if old instance == new instance
316 if (oldReadableConfigBean.getInstance().equals(instance)) {
317 // reused old instance:
318 // wrap in readable dynamic mbean
319 reusedInstances.add(primaryReadOnlyON);
320 osgiRegistration = oldInternalInfo.getOsgiRegistration();
322 // recreated instance:
323 // it is responsibility of module to call the old instance -
324 // we just need to unregister configbean
325 recreatedInstances.add(primaryReadOnlyON);
327 // close old osgi registration
328 oldInternalInfo.getOsgiRegistration().close();
331 // close old module jmx registrator
332 oldInternalInfo.getModuleJMXRegistrator().close();
335 // wrap in readable dynamic mbean
336 newInstances.add(primaryReadOnlyON);
338 Module realModule = entry.getRealModule();
340 DynamicReadableWrapper newReadableConfigBean = new DynamicReadableWrapper(
341 realModule, instance, moduleIdentifier,
342 registryMBeanServer, configMBeanServer);
346 newModuleJMXRegistrator.registerMBean(newReadableConfigBean,
348 } catch (InstanceAlreadyExistsException e) {
349 throw new IllegalStateException(e);
353 if (osgiRegistration == null) {
354 ModuleFactory moduleFactory = entry.getModuleFactory();
355 if (moduleFactory != null) {
356 BundleContext bc = configTransactionController.
357 getModuleFactoryBundleContext(moduleFactory.getImplementationName());
358 osgiRegistration = beanToOsgiServiceManager.registerToOsgi(realModule.getClass(),
359 newReadableConfigBean.getInstance(), entry.getIdentifier(), bc);
361 throw new NullPointerException(entry.getIdentifier().getFactoryName() + " ModuleFactory not found.");
366 RootRuntimeBeanRegistratorImpl runtimeBeanRegistrator = runtimeRegistrators
367 .get(entry.getIdentifier());
368 ModuleInternalInfo newInfo = new ModuleInternalInfo(
369 entry.getIdentifier(), newReadableConfigBean, osgiRegistration,
370 runtimeBeanRegistrator, newModuleJMXRegistrator,
371 orderingIdx, entry.isDefaultBean());
373 newConfigEntries.put(realModule, newInfo);
376 currentConfig.addAll(newConfigEntries.values());
379 version = configTransactionController.getVersion();
381 // switch readable Service Reference Registry
382 this.readableSRRegistry.close();
383 this.readableSRRegistry = ServiceReferenceRegistryImpl.createSRReadableRegistry(
384 configTransactionController.getWritableRegistry(), this, baseJMXRegistrator);
386 return new CommitStatus(newInstances, reusedInstances,
394 public synchronized List<ObjectName> getOpenConfigs() {
395 Map<String, Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry>> transactions = transactionsHolder
396 .getCurrentTransactions();
397 List<ObjectName> result = new ArrayList<>(transactions.size());
398 for (Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry> configTransactionControllerEntry : transactions
400 result.add(configTransactionControllerEntry.getKey().getControllerObjectName());
406 * Abort open transactions and unregister read only modules. Since this
407 * class is not responsible for registering itself under
408 * {@link org.opendaylight.controller.config.api.ConfigRegistry#OBJECT_NAME}, it will not unregister itself
412 public synchronized void close() {
413 // abort transactions
414 Map<String, Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry>> transactions = transactionsHolder
415 .getCurrentTransactions();
416 for (Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry> configTransactionControllerEntry : transactions
419 ConfigTransactionControllerInternal configTransactionController = configTransactionControllerEntry.getKey();
421 configTransactionControllerEntry.getValue().close();
422 configTransactionController.abortConfig();
423 } catch (RuntimeException e) {
424 logger.warn("Ignoring exception while aborting {}",
425 configTransactionController, e);
429 // destroy all live objects one after another in order of the dependency
431 List<DestroyedModule> destroyedModules = currentConfig
432 .getModulesToBeDestroyed();
433 for (DestroyedModule destroyedModule : destroyedModules) {
434 destroyedModule.close();
436 // unregister MBeans that failed to unregister properly
437 baseJMXRegistrator.close();
438 // remove jmx servers
439 MBeanServerFactory.releaseMBeanServer(registryMBeanServer);
440 MBeanServerFactory.releaseMBeanServer(transactionsMBeanServer);
448 public long getVersion() {
456 public Set<String> getAvailableModuleNames() {
457 return new HierarchicalConfigMBeanFactoriesHolder(
458 resolver.getAllFactories()).getModuleNames();
465 public boolean isHealthy() {
475 public Set<ObjectName> lookupConfigBeans() {
476 return lookupConfigBeans("*", "*");
483 public Set<ObjectName> lookupConfigBeans(String moduleName) {
484 return lookupConfigBeans(moduleName, "*");
491 public ObjectName lookupConfigBean(String moduleName, String instanceName)
492 throws InstanceNotFoundException {
493 return LookupBeansUtil.lookupConfigBean(this, moduleName, instanceName);
500 public Set<ObjectName> lookupConfigBeans(String moduleName,
501 String instanceName) {
502 ObjectName namePattern = ObjectNameUtil.createModulePattern(moduleName,
504 return baseJMXRegistrator.queryNames(namePattern, null);
511 public Set<ObjectName> lookupRuntimeBeans() {
512 return lookupRuntimeBeans("*", "*");
519 public Set<ObjectName> lookupRuntimeBeans(String moduleName,
520 String instanceName) {
521 if (moduleName == null) {
524 if (instanceName == null) {
527 ObjectName namePattern = ObjectNameUtil.createRuntimeBeanPattern(
528 moduleName, instanceName);
529 return baseJMXRegistrator.queryNames(namePattern, null);
533 public void checkConfigBeanExists(ObjectName objectName) throws InstanceNotFoundException {
534 ObjectNameUtil.checkDomain(objectName);
535 ObjectNameUtil.checkType(objectName, ObjectNameUtil.TYPE_MODULE);
536 String transactionName = ObjectNameUtil.getTransactionName(objectName);
537 if (transactionName != null) {
538 throw new IllegalArgumentException("Transaction attribute not supported in registry, wrong ObjectName: " + objectName);
540 // make sure exactly one match is found:
541 LookupBeansUtil.lookupConfigBean(this, ObjectNameUtil.getFactoryName(objectName), ObjectNameUtil.getInstanceName(objectName));
544 // service reference functionality:
546 public synchronized ObjectName lookupConfigBeanByServiceInterfaceName(String serviceInterfaceQName, String refName) {
547 return readableSRRegistry.lookupConfigBeanByServiceInterfaceName(serviceInterfaceQName, refName);
551 public synchronized Map<String, Map<String, ObjectName>> getServiceMapping() {
552 return readableSRRegistry.getServiceMapping();
556 public synchronized Map<String, ObjectName> lookupServiceReferencesByServiceInterfaceName(String serviceInterfaceQName) {
557 return readableSRRegistry.lookupServiceReferencesByServiceInterfaceName(serviceInterfaceQName);
561 public synchronized Set<String> lookupServiceInterfaceNames(ObjectName objectName) throws InstanceNotFoundException {
562 return readableSRRegistry.lookupServiceInterfaceNames(objectName);
566 public synchronized String getServiceInterfaceName(String namespace, String localName) {
567 return readableSRRegistry.getServiceInterfaceName(namespace, localName);
571 public void checkServiceReferenceExists(ObjectName objectName) throws InstanceNotFoundException {
572 readableSRRegistry.checkServiceReferenceExists(objectName);
576 public ObjectName getServiceReference(String serviceInterfaceQName, String refName) throws InstanceNotFoundException {
577 return readableSRRegistry.getServiceReference(serviceInterfaceQName, refName);
581 public Set<String> getAvailableModuleFactoryQNames() {
582 return ModuleQNameUtil.getQNames(resolver.getAllFactories());
586 public String toString() {
587 return "ConfigRegistryImpl{" +
588 "versionCounter=" + versionCounter +
589 ", version=" + version +
595 * Holds currently running modules
599 private final Map<ModuleIdentifier, ModuleInternalInfo> currentConfig = new HashMap<>();
602 * Add all modules to the internal map. Also add service instance to OSGi
605 public void addAll(Collection<ModuleInternalInfo> configInfos) {
606 if (currentConfig.size() > 0) {
607 throw new IllegalStateException(
608 "Error - some config entries were not removed: "
611 for (ModuleInternalInfo configInfo : configInfos) {
616 private void add(ModuleInternalInfo configInfo) {
617 ModuleInternalInfo oldValue = currentConfig.put(configInfo.getIdentifier(),
619 if (oldValue != null) {
620 throw new IllegalStateException(
621 "Cannot overwrite module with same name:"
622 + configInfo.getIdentifier() + ":" + configInfo);
627 * Remove entry from current config.
629 public void remove(ModuleIdentifier name) {
630 ModuleInternalInfo removed = currentConfig.remove(name);
631 if (removed == null) {
632 throw new IllegalStateException(
633 "Cannot remove from ConfigHolder - name not found:" + name);
637 public Collection<ModuleInternalInfo> getEntries() {
638 return currentConfig.values();
641 public List<DestroyedModule> getModulesToBeDestroyed() {
642 List<DestroyedModule> result = new ArrayList<>();
643 for (ModuleInternalInfo moduleInternalInfo : getEntries()) {
644 result.add(moduleInternalInfo.toDestroyedModule());
646 Collections.sort(result);
654 * Holds Map<transactionName, transactionController> and purges it each time its
655 * content is requested.
658 class TransactionsHolder {
660 * This map keeps transaction names and
661 * {@link ConfigTransactionControllerInternal} instances, because platform
662 * MBeanServer transforms mbeans into another representation. Map is cleaned
663 * every time current transactions are requested.
665 @GuardedBy("ConfigRegistryImpl.this")
666 private final Map<String /* transactionName */,
667 Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry>> transactions = new HashMap<>();
670 * Can only be called from within synchronized method.
672 public void add(String transactionName,
673 ConfigTransactionControllerInternal transactionController, ConfigTransactionLookupRegistry txLookupRegistry) {
674 Object oldValue = transactions.put(transactionName,
675 Maps.immutableEntry(transactionController, txLookupRegistry));
676 if (oldValue != null) {
677 throw new IllegalStateException(
678 "Error: two transactions with same name");
683 * Purges closed transactions from transactions map. Can only be called from
684 * within synchronized method. Calling this method more than once within the
685 * method can modify the resulting map that was obtained in previous calls.
687 * @return current view on transactions map.
689 public Map<String, Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry>> getCurrentTransactions() {
690 // first, remove closed transaction
691 for (Iterator<Entry<String, Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry>>> it = transactions
692 .entrySet().iterator(); it.hasNext(); ) {
693 Entry<String, Entry<ConfigTransactionControllerInternal, ConfigTransactionLookupRegistry>> entry = it
695 if (entry.getValue().getKey().isClosed()) {
699 return Collections.unmodifiableMap(transactions);