diff options
Diffstat (limited to 'openecomp-be/api/openecomp-sdc-rest-webapp/item-rest/item-rest-services/src/main/java/org/openecomp/sdcrests/item/rest/services/catalog/notification/NotifierFactory.java')
-rw-r--r-- | openecomp-be/api/openecomp-sdc-rest-webapp/item-rest/item-rest-services/src/main/java/org/openecomp/sdcrests/item/rest/services/catalog/notification/NotifierFactory.java | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/openecomp-be/api/openecomp-sdc-rest-webapp/item-rest/item-rest-services/src/main/java/org/openecomp/sdcrests/item/rest/services/catalog/notification/NotifierFactory.java b/openecomp-be/api/openecomp-sdc-rest-webapp/item-rest/item-rest-services/src/main/java/org/openecomp/sdcrests/item/rest/services/catalog/notification/NotifierFactory.java new file mode 100644 index 0000000000..a7f1e9c7fb --- /dev/null +++ b/openecomp-be/api/openecomp-sdc-rest-webapp/item-rest/item-rest-services/src/main/java/org/openecomp/sdcrests/item/rest/services/catalog/notification/NotifierFactory.java @@ -0,0 +1,105 @@ +/* + * Copyright © 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.openecomp.sdcrests.item.rest.services.catalog.notification; + +import com.fasterxml.jackson.databind.ObjectMapper; +import java.io.FileInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.Collection; +import java.util.Map; +import java.util.Objects; +import org.onap.sdc.tosca.services.YamlUtil; +import org.openecomp.sdc.logging.api.Logger; +import org.openecomp.sdc.logging.api.LoggerFactory; +import org.openecomp.sdcrests.item.rest.services.catalog.notification.http.HttpConfiguration; +import org.openecomp.sdcrests.item.rest.services.catalog.notification.http.HttpTaskProducer; +import org.openecomp.sdcrests.item.types.ItemAction; + +/** + * Creates an instance of {@link Notifier}, initialized according to current configuration. + * The configuration must be passed via the {@link #CONFIG_FILE_PROPERTY} JVM argument. + */ +public class NotifierFactory { + + private static final Logger LOGGER = LoggerFactory.getLogger(NotifierFactory.class); + + private static final String CONFIG_FILE_PROPERTY = "configuration.yaml"; + private static final String CONFIG_SECTION = "catalogNotificationsConfig"; + + private static final Notifier INSTANCE; + + static { + INSTANCE = createInstance(); + } + + /** + * Returns a {@link Notifier} instance according to the provided configuration. If no configuration was not + * provided, or the given configuration is incorrect, then an instance with reduced functionality will be returned. + * + * @return available instance of {@link Notifier} + */ + public static Notifier getInstance() { + return INSTANCE; + } + + static Notifier createInstance() { + + try { + + String file = Objects.requireNonNull(System.getProperty(CONFIG_FILE_PROPERTY), + "Config file location must be specified via system property " + CONFIG_FILE_PROPERTY); + + Object config = getNotificationConfiguration(file); + ObjectMapper mapper = new ObjectMapper(); + HttpConfiguration httpConfig = mapper.convertValue(config, HttpConfiguration.class); + + return new AsyncNotifier(new HttpTaskProducer(httpConfig)); + + } catch (Exception e) { + LOGGER.warn("Failed to initialize notifier. Notifications will not be sent", e); + return new UnsupportedConfigurationNotifier(); + } + } + + private static Object getNotificationConfiguration(String file) throws IOException { + + Map<?, ?> configuration = Objects.requireNonNull(readConfigurationFile(file), "Configuration cannot be empty"); + Object notificationConfig = configuration.get(CONFIG_SECTION); + if (notificationConfig == null) { + throw new EntryNotConfiguredException(CONFIG_SECTION + " section"); + } + + return notificationConfig; + } + + private static Map<?, ?> readConfigurationFile(String file) throws IOException { + + try (InputStream fileInput = new FileInputStream(file)) { + YamlUtil yamlUtil = new YamlUtil(); + return yamlUtil.yamlToMap(fileInput); + } + } + + static class UnsupportedConfigurationNotifier implements Notifier { + + @Override + public void execute(Collection<String> itemIds, ItemAction action) { + throw new IllegalStateException("Cannot send notifications. The notifier was not properly initialized"); + } + } +} |