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Diffstat (limited to 'common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationChangeNotifier.java')
-rw-r--r--common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationChangeNotifier.java393
1 files changed, 0 insertions, 393 deletions
diff --git a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationChangeNotifier.java b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationChangeNotifier.java
deleted file mode 100644
index cd6481f97b..0000000000
--- a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationChangeNotifier.java
+++ /dev/null
@@ -1,393 +0,0 @@
-/*
- * Copyright © 2016-2018 European Support Limited
- *
- * 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 org.onap.config.impl;
-
-import java.io.File;
-import java.io.IOException;
-import java.lang.management.ManagementFactory;
-import java.lang.reflect.Method;
-import java.nio.file.ClosedWatchServiceException;
-import java.nio.file.FileSystems;
-import java.nio.file.Path;
-import java.nio.file.StandardWatchEventKinds;
-import java.nio.file.WatchEvent;
-import java.nio.file.WatchKey;
-import java.nio.file.WatchService;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.LinkedHashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Set;
-import java.util.Vector;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.TimeUnit;
-import javax.management.JMX;
-import javax.management.MBeanServerConnection;
-import javax.management.ObjectName;
-import org.onap.config.ConfigurationUtils;
-import org.onap.config.Constants;
-import org.onap.config.api.ConfigurationChangeListener;
-import org.onap.config.api.ConfigurationManager;
-import org.onap.config.api.Hint;
-
-
-public final class ConfigurationChangeNotifier {
-
- static {
- if (!Thread.currentThread().getStackTrace()[2].getClassName().equals(ConfigurationImpl.class.getName())) {
- throw new RuntimeException("Illegal access.");
- }
- }
-
- private final HashMap<String, List<NotificationData>> store = new HashMap<>();
- private final ScheduledExecutorService executor =
- Executors.newScheduledThreadPool(5, ConfigurationUtils.getThreadFactory());
- private final ExecutorService notificationExecutor =
- Executors.newCachedThreadPool(ConfigurationUtils.getThreadFactory());
- private final Map<String, WatchService> watchServiceCollection = Collections.synchronizedMap(new HashMap<>());
-
- public ConfigurationChangeNotifier(Map<String, AggregateConfiguration> inMemoryConfig) {
- executor.scheduleWithFixedDelay(() -> this.pollFilesystemAndUpdateConfigurationIfRequired(inMemoryConfig,
- System.getProperty("config.location"), false), 1, 1, TimeUnit.MILLISECONDS);
- executor.scheduleWithFixedDelay(() -> this.pollFilesystemAndUpdateConfigurationIfRequired(inMemoryConfig,
- System.getProperty("tenant.config.location"), true), 1, 1, TimeUnit.MILLISECONDS);
- executor.scheduleWithFixedDelay(() -> this.pollFilesystemAndUpdateNodeSpecificConfigurationIfRequired(
- System.getProperty("node.config.location")), 1, 1, TimeUnit.MILLISECONDS);
- }
-
- public void pollFilesystemAndUpdateConfigurationIfRequired(Map<String, AggregateConfiguration> inMemoryConfig,
- String location, boolean isTenantLocation) {
- try {
- Set<Path> paths = watchForChange(location);
- if (paths != null) {
- for (Path path : paths) {
- File file = path.toAbsolutePath().toFile();
- String repositoryKey = null;
- if (ConfigurationUtils.isConfig(file) && file.isFile()) {
- if (isTenantLocation) {
- Collection<File> tenantsRoot =
- ConfigurationUtils.getAllFiles(new File(location), false, true);
- for (File tenantRoot : tenantsRoot) {
- if (file.getAbsolutePath().startsWith(tenantRoot.getAbsolutePath())) {
- repositoryKey = ConfigurationUtils.getConfigurationRepositoryKey(
- (tenantRoot.getName() + Constants.TENANT_NAMESPACE_SEPARATOR
- + ConfigurationUtils.getNamespace(file))
- .split(Constants.TENANT_NAMESPACE_SEPARATOR));
- }
- }
- } else {
- repositoryKey = ConfigurationUtils.getConfigurationRepositoryKey(file);
- }
- AggregateConfiguration config = inMemoryConfig.get(repositoryKey);
- if (config != null) {
- LinkedHashMap origConfig = ConfigurationUtils.toMap(config.getFinalConfiguration());
- config.addConfig(file);
- LinkedHashMap latestConfig = ConfigurationUtils.toMap(config.getFinalConfiguration());
- Map map = ConfigurationUtils.diff(origConfig, latestConfig);
- String[] tenantNamespaceArray = repositoryKey.split(Constants.KEY_ELEMENTS_DELIMETER);
- updateConfigurationValues(tenantNamespaceArray[0], tenantNamespaceArray[1], map);
- }
- } else {
- for (String configKey : inMemoryConfig.keySet()) {
- repositoryKey = configKey;
- AggregateConfiguration config = inMemoryConfig.get(repositoryKey);
- if (config.containsConfig(file)) {
- LinkedHashMap origConfig = ConfigurationUtils.toMap(config.getFinalConfiguration());
- config.removeConfig(file);
- LinkedHashMap latestConfig = ConfigurationUtils.toMap(config.getFinalConfiguration());
- Map map = ConfigurationUtils.diff(origConfig, latestConfig);
- String[] tenantNamespaceArray = repositoryKey.split(Constants.KEY_ELEMENTS_DELIMETER);
- updateConfigurationValues(tenantNamespaceArray[0], tenantNamespaceArray[1], map);
- }
- }
- }
- }
- }
- } catch (ClosedWatchServiceException exception) {
- // do nothing.
- } catch (Exception exception) {
- exception.printStackTrace();
- }
- }
-
- public void pollFilesystemAndUpdateNodeSpecificConfigurationIfRequired(String location) {
- try {
- Set<Path> paths = watchForChange(location);
- if (paths != null) {
- for (Path path : paths) {
- File file = path.toAbsolutePath().toFile();
-
- if (ConfigurationUtils.isConfig(file)) {
- String repositoryKey = ConfigurationUtils.getConfigurationRepositoryKey(file);
- ConfigurationRepository.lookup().populateOverrideConfiguration(repositoryKey, file);
- } else {
- ConfigurationRepository.lookup().removeOverrideConfiguration(file);
- }
- }
- }
- } catch (Exception exception) {
- exception.printStackTrace();
- }
- }
-
- private Set<Path> watchForChange(String location) throws Exception {
- if (location == null || location.trim().length() == 0) {
- return Collections.emptySet();
- }
- File file = new File(location);
- if (!file.exists()) {
- return Collections.emptySet();
- }
- Path path = file.toPath();
- Set<Path> toReturn = new HashSet<>();
- try (final WatchService watchService = FileSystems.getDefault().newWatchService()) {
- watchServiceCollection.put(location, watchService);
- path.register(watchService, StandardWatchEventKinds.ENTRY_MODIFY, StandardWatchEventKinds.ENTRY_CREATE,
- StandardWatchEventKinds.ENTRY_DELETE);
- for (File dir : ConfigurationUtils.getAllFiles(file, true, true)) {
- dir.toPath().register(watchService, StandardWatchEventKinds.ENTRY_MODIFY,
- StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_DELETE);
- }
- while (true) {
- final WatchKey wk = watchService.take();
- Thread.sleep(ConfigurationRepository.lookup()
- .getConfigurationFor(Constants.DEFAULT_TENANT, Constants.DB_NAMESPACE)
- .getLong("event.fetch.delay"));
- for (WatchEvent<?> event : wk.pollEvents()) {
- Object context = event.context();
- if (context instanceof Path) {
- File newFile = new File(((Path) wk.watchable()).toFile(), context.toString());
- if (event.kind() == StandardWatchEventKinds.ENTRY_CREATE) {
- if (newFile.isDirectory()) {
- newFile.toPath().register(watchService, StandardWatchEventKinds.ENTRY_MODIFY,
- StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_DELETE);
- continue;
- }
- } else if (event.kind() == StandardWatchEventKinds.ENTRY_MODIFY) {
- if (newFile.isDirectory()) {
- continue;
- }
- }
- toReturn.add(newFile.toPath());
- }
- }
- if (toReturn.isEmpty()) {
- continue;
- }
- break;
- }
- }
- return toReturn;
- }
-
- private void updateConfigurationValues(String tenant, String namespace, Map map) throws Exception {
- MBeanServerConnection mbsc = ManagementFactory.getPlatformMBeanServer();
- ObjectName mbeanName = new ObjectName(Constants.MBEAN_NAME);
- ConfigurationManager conf = JMX.newMBeanProxy(mbsc, mbeanName, ConfigurationManager.class, true);
- conf.updateConfigurationValues(tenant, namespace, map);
- }
-
- public void shutdown() {
- for (WatchService watch : watchServiceCollection.values()) {
- try {
- watch.close();
- } catch (IOException exception) {
- //do nothing
- }
- }
- executor.shutdownNow();
- }
-
- public void notifyChangesTowards(String tenant, String component, String key, ConfigurationChangeListener myself)
- throws Exception {
- List<NotificationData> notificationList = store.get(tenant + Constants.KEY_ELEMENTS_DELIMETER + component);
- if (notificationList == null) {
- notificationList = Collections.synchronizedList(new ArrayList<>());
- store.put(tenant + Constants.KEY_ELEMENTS_DELIMETER + component, notificationList);
- executor.scheduleWithFixedDelay(
- () -> triggerScanning(tenant + Constants.KEY_ELEMENTS_DELIMETER + component), 1, 30000,
- TimeUnit.MILLISECONDS);
- }
- notificationList.add(new NotificationData(tenant, component, key, myself));
- }
-
- private void triggerScanning(String key) {
- if (store.get(key) != null) {
- notificationExecutor.submit(() -> scanForChanges(key));
- } else {
- throw new IllegalArgumentException("Notification service for " + key + " is suspended.");
- }
- }
-
- private void scanForChanges(String key) {
- List<NotificationData> list = store.get(key);
- if (list != null) {
- list.stream().filter(NotificationData::isChanged)
- .forEach(notificationData -> notificationExecutor.submit(() -> sendNotification(notificationData)));
- }
- }
-
- private void sendNotification(NotificationData notificationData) {
- try {
- notificationData.dispatchNotification();
- } catch (Exception exception) {
- exception.printStackTrace();
- }
- }
-
- public void stopNotificationTowards(String tenant, String component, String key, ConfigurationChangeListener myself)
- throws Exception {
- List<NotificationData> notificationList = store.get(tenant + Constants.KEY_ELEMENTS_DELIMETER + component);
- if (notificationList != null) {
- boolean removed = notificationList.remove(new NotificationData(tenant, component, key, myself));
- if (removed && notificationList.isEmpty()) {
- store.remove(tenant + Constants.KEY_ELEMENTS_DELIMETER + component);
- }
- }
-
- }
-
- static class NotificationData {
-
- final String tenant;
-
- final String namespace;
-
- final String key;
-
- final ConfigurationChangeListener myself;
-
- Object currentValue;
-
- boolean isArray;
-
- public NotificationData(String tenant, String component, String key, ConfigurationChangeListener myself)
- throws Exception {
- this.tenant = tenant;
- this.namespace = component;
- this.key = key;
- this.myself = myself;
- if (!ConfigurationRepository.lookup().getConfigurationFor(tenant, component).containsKey(key)) {
- throw new RuntimeException("Key[" + key + "] not found.");
- }
- isArray = ConfigurationUtils.isArray(tenant, component, key, Hint.DEFAULT.value());
- if (isArray) {
- currentValue = ConfigurationManager.lookup().getAsStringValues(tenant, component, key);
- } else {
- currentValue = ConfigurationManager.lookup().getAsString(tenant, component, key);
- }
- }
-
- @Override
- public int hashCode() {
- return Objects.hash(tenant, namespace, key, myself, currentValue, isArray);
- }
-
- @Override
- public boolean equals(Object obj) {
- if (!(obj instanceof NotificationData)) {
- return false;
- }
- NotificationData nd = (NotificationData) obj;
- return Objects.equals(tenant, nd.tenant) && Objects.equals(namespace, nd.namespace) && Objects.equals(key,
- nd.key) && Objects.equals(myself, nd.myself) && Objects.equals(currentValue, nd.currentValue)
- // it's either String or List<String>
- && isArray == nd.isArray;
- }
-
- public boolean isChanged() {
- Object latestValue;
- try {
- if (isArray) {
- latestValue = ConfigurationManager.lookup().getAsStringValues(tenant, namespace, key);
- } else {
- latestValue = ConfigurationManager.lookup().getAsString(tenant, namespace, key);
- }
- if (!isArray) {
- return !currentValue.equals(latestValue);
- } else {
- Collection<String> oldCollection = (Collection<String>) currentValue;
- Collection<String> newCollection = (Collection<String>) latestValue;
- for (String val : oldCollection) {
- if (!newCollection.remove(val)) {
- return true;
- }
- }
- return !newCollection.isEmpty();
- }
- } catch (Exception exception) {
- return false;
- }
- }
-
- public void dispatchNotification() throws Exception {
- Method method = null;
- Vector<Object> parameters = null;
- try {
- Object latestValue;
- if (isArray) {
- latestValue = ConfigurationManager.lookup().getAsStringValues(tenant, namespace, key);
- } else {
- latestValue = ConfigurationManager.lookup().getAsString(tenant, namespace, key);
- }
- Method[] methods = myself.getClass().getDeclaredMethods();
- if (methods != null && methods.length > 0) {
- method = methods[0];
- int paramCount = method.getParameterCount();
- parameters = new Vector<>();
- if (paramCount > 4) {
- if (tenant.equals(Constants.DEFAULT_TENANT)) {
- parameters.add(null);
- } else {
- parameters.add(tenant);
- }
- }
- if (paramCount > 3) {
- if (namespace.equals(Constants.DEFAULT_NAMESPACE)) {
- parameters.add(null);
- } else {
- parameters.add(namespace);
- }
- }
- parameters.add(key);
- parameters.add(currentValue);
- parameters.add(latestValue);
- method.setAccessible(true);
- }
- } catch (Exception exception) {
- exception.printStackTrace();
- } finally {
- isArray = ConfigurationUtils.isArray(tenant, namespace, key, Hint.DEFAULT.value());
- if (isArray) {
- currentValue = ConfigurationManager.lookup().getAsStringValues(tenant, namespace, key);
- } else {
- currentValue = ConfigurationManager.lookup().getAsString(tenant, namespace, key);
- }
- if (method != null && parameters != null) {
- method.invoke(myself, parameters.toArray());
- }
- }
- }
- }
-}