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Eclipse Ditto is a framework for creating and managing digital twins in the IoT.

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/*
 * Copyright (c) 2017 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0
 *
 * SPDX-License-Identifier: EPL-2.0
 */
package org.eclipse.ditto.connectivity.model;

import javax.annotation.concurrent.Immutable;

import org.eclipse.ditto.base.model.json.FieldType;
import org.eclipse.ditto.base.model.json.JsonSchemaVersion;
import org.eclipse.ditto.base.model.json.Jsonifiable;
import org.eclipse.ditto.json.JsonFactory;
import org.eclipse.ditto.json.JsonField;
import org.eclipse.ditto.json.JsonFieldDefinition;
import org.eclipse.ditto.json.JsonFieldSelector;
import org.eclipse.ditto.json.JsonObject;

/**
 * Connection Metrics represent the aggregated metrics for all sources/targets.
 */
@Immutable
public interface ConnectionMetrics extends Jsonifiable.WithFieldSelectorAndPredicate {

    /**
     * @return the inbound {@link AddressMetric}s for the connection
     */
    AddressMetric getInboundMetrics();

    /**
     * @return the outbound {@link AddressMetric}s for the connection
     */
    AddressMetric getOutboundMetrics();

    /**
     * Returns all non-hidden marked fields of this {@code Connection}.
     *
     * @return a JSON object representation of this Connection including only non-hidden marked fields.
     */
    @Override
    default JsonObject toJson() {
        return toJson(FieldType.notHidden());
    }

    @Override
    default JsonObject toJson(final JsonSchemaVersion schemaVersion, final JsonFieldSelector fieldSelector) {
        return toJson(schemaVersion, FieldType.notHidden()).get(fieldSelector);
    }

    /**
     * An enumeration of the known {@code JsonField}s of a {@code ConnectionMetrics}.
     */
    @Immutable
    final class JsonFields {

        /**
         * JSON field containing the inbound metrics.
         */
        public static final JsonFieldDefinition INBOUND_METRICS =
                JsonFactory.newJsonObjectFieldDefinition("inbound", FieldType.REGULAR,
                        JsonSchemaVersion.V_2);

        /**
         * JSON field containing the inbound metrics.
         */
        public static final JsonFieldDefinition OUTBOUND_METRICS =
                JsonFactory.newJsonObjectFieldDefinition("outbound", FieldType.REGULAR,
                        JsonSchemaVersion.V_2);

        private JsonFields() {
            throw new AssertionError();
        }

    }
}