--- /dev/null
+/*
+ * ============LICENSE_START=======================================================
+ * O-RAN-SC
+ * ================================================================================
+ * Copyright © 2021 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.o.ran.oam.nf.oam.adopter.pm.rest.manager;
+
+import static java.util.Objects.requireNonNull;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.net.URI;
+import java.nio.file.Paths;
+import javax.annotation.PostConstruct;
+import org.apache.commons.configuration2.YAMLConfiguration;
+import org.apache.commons.configuration2.builder.ConfigurationBuilderEvent;
+import org.apache.commons.configuration2.builder.ReloadingFileBasedConfigurationBuilder;
+import org.apache.commons.configuration2.builder.fluent.Parameters;
+import org.apache.commons.configuration2.event.EventListener;
+import org.apache.commons.configuration2.ex.ConfigurationException;
+import org.o.ran.oam.nf.oam.adopter.pm.rest.manager.pojos.VesMappingConfiguration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+
+@Service
+public class PerformanceManagementMapperConfigProvider {
+
+ private static final Logger LOG = LoggerFactory.getLogger(PerformanceManagementMapperConfigProvider.class);
+
+ private static final ObjectMapper YAML_READER = new ObjectMapper(new YAMLFactory());
+ @Value("${pm-rest-manager.mapping-config-path:#{null}}")
+ private String mappingFilePath;
+ private ReloadingFileBasedConfigurationBuilder<YAMLConfiguration> builder;
+
+ @Autowired
+ public PerformanceManagementMapperConfigProvider() {
+
+ }
+
+ /**
+ * Initialize Service.
+ */
+ @PostConstruct
+ public void init() throws IOException, ConfigurationException {
+ requireNonNull(mappingFilePath);
+ final URI filePath = Paths.get(mappingFilePath).toUri();
+ builder = new ReloadingFileBasedConfigurationBuilder<>(YAMLConfiguration.class)
+ .configure(new Parameters().hierarchical().setURL(filePath.toURL()));
+ builder.addEventListener(ConfigurationBuilderEvent.CONFIGURATION_REQUEST, (EventListener) event -> {
+ builder.getReloadingController().checkForReloading(null);
+ LOG.debug("Reloading {}", filePath.toString());
+ });
+ //Test initial configuration
+ builder.getConfiguration();
+ }
+
+ /**
+ * Provide VES Mapping configuration.
+ */
+ public VesMappingConfiguration getVesMappingConfiguration() throws ConfigurationException, IOException {
+ final YAMLConfiguration configuration = builder.getConfiguration();
+ final StringWriter output = new StringWriter();
+ configuration.write(output);
+ return YAML_READER.readValue(output.toString(), VesMappingConfiguration.class);
+ }
+}