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/*
* ============LICENSE_START====================================
* DCAEGEN2-SERVICES-SDK
* =========================================================
* Copyright (C) 2019 Nokia. 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.onap.dcaegen2.services.sdk.rest.services.model.logging;
import io.vavr.collection.HashMap;
import io.vavr.collection.Map;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.UUID;
import org.immutables.value.Value;
import org.jetbrains.annotations.Nullable;
import org.slf4j.MDC;
/**
* @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
* @since 1.1.2
*/
@Value.Immutable(singleton = true)
public interface GlobalDiagnosticContext {
@Value.Default
default String instanceId() {
return UUID.randomUUID().toString();
}
@Value.Default
default String serverFqdn() {
try {
return InetAddress.getLocalHost().toString();
} catch (UnknownHostException ex) {
return InetAddress.getLoopbackAddress().toString();
}
}
@Value.Default
default String serviceName() {
return System.getenv().getOrDefault("HOSTNAME", "unknown_service");
}
@Value.Derived
default Map<String, String> asMap() {
return HashMap.of(
MdcVariables.INSTANCE_ID, instanceId(),
MdcVariables.SERVER_FQDN, serverFqdn(),
MdcVariables.SERVICE_NAME, serviceName());
}
static GlobalDiagnosticContext instance() {
return ImmutableGlobalDiagnosticContext.of();
}
}
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