2 * ============LICENSE_START====================================
3 * DCAEGEN2-SERVICES-SDK
4 * =========================================================
5 * Copyright (C) 2019 Nokia. All rights reserved.
6 * =========================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=====================================
21 package org.onap.dcaegen2.services.sdk.rest.services.model.logging;
23 import io.vavr.collection.HashMap;
24 import io.vavr.collection.Map;
25 import java.net.InetAddress;
26 import java.net.UnknownHostException;
27 import java.util.UUID;
28 import org.immutables.value.Value;
29 import org.jetbrains.annotations.Nullable;
33 * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
36 @Value.Immutable(singleton = true)
37 public interface GlobalDiagnosticContext {
40 default String instanceId() {
41 return UUID.randomUUID().toString();
45 default String serverFqdn() {
47 return InetAddress.getLocalHost().toString();
48 } catch (UnknownHostException ex) {
49 return InetAddress.getLoopbackAddress().toString();
54 default String serviceName() {
55 return System.getenv().getOrDefault("HOSTNAME", "unknown_service");
59 default Map<String, String> asMap() {
61 MdcVariables.INSTANCE_ID, instanceId(),
62 MdcVariables.SERVER_FQDN, serverFqdn(),
63 MdcVariables.SERVICE_NAME, serviceName());
66 static GlobalDiagnosticContext instance() {
67 return ImmutableGlobalDiagnosticContext.of();