/
ImmutableConnectionMetrics.java
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/
ImmutableConnectionMetrics.java
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/*
* Copyright (c) 2017 Bosch Software Innovations GmbH.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/index.php
*
* Contributors:
* Bosch Software Innovations GmbH - initial contribution
*/
package org.eclipse.ditto.model.connectivity;
import static org.eclipse.ditto.model.base.common.ConditionChecker.checkNotNull;
import java.util.Objects;
import java.util.Optional;
import java.util.function.Predicate;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.json.JsonFactory;
import org.eclipse.ditto.json.JsonField;
import org.eclipse.ditto.json.JsonObject;
import org.eclipse.ditto.json.JsonObjectBuilder;
import org.eclipse.ditto.model.base.json.JsonSchemaVersion;
/**
* TODO TJ doc
*/
@Immutable
final class ImmutableConnectionMetrics implements ConnectionMetrics {
private final ConnectionStatus connectionStatus;
@Nullable private final String connectionStatusDetails;
private ImmutableConnectionMetrics(final ConnectionStatus connectionStatus,
@Nullable final String connectionStatusDetails) {
this.connectionStatus = connectionStatus;
this.connectionStatusDetails = connectionStatusDetails;
}
/**
* Creates a new {@code ImmutableConnectionMetrics} instance.
*
* @param connectionStatus the ConnectionStatus of the metrics to create
* @param connectionStatusDetails the optional details about the connection status
* @return a new instance of ConnectionMetrics.
*/
public static ImmutableConnectionMetrics of(final ConnectionStatus connectionStatus,
@Nullable final String connectionStatusDetails) {
checkNotNull(connectionStatus, "connectionStatus");
checkNotNull(connectionStatusDetails, "connectionStatusDetails");
return new ImmutableConnectionMetrics(connectionStatus, connectionStatusDetails);
}
/**
* Creates a new {@code ConnectionMetrics} object from the specified JSON object.
*
* @param jsonObject a JSON object which provides the data for the ConnectionMetrics to be created.
* @return a new ConnectionMetrics which is initialised with the extracted data from {@code jsonObject}.
* @throws NullPointerException if {@code jsonObject} is {@code null}.
* @throws org.eclipse.ditto.json.JsonParseException if {@code jsonObject} is not an appropriate JSON object.
*/
public static ConnectionMetrics fromJson(final JsonObject jsonObject) {
final ConnectionStatus readConnectionStatus = ConnectionStatus.forName(
jsonObject.getValueOrThrow(JsonFields.CONNECTION_STATUS)).orElse(ConnectionStatus.UNKNOWN);
final String readConnectionStatusDetails = jsonObject.getValueOrThrow(JsonFields.CONNECTION_STATUS_DETAILS);
return of(readConnectionStatus, readConnectionStatusDetails);
}
@Override
public ConnectionStatus getConnectionStatus() {
return connectionStatus;
}
@Override
public Optional<String> getConnectionStatusDetails() {
return Optional.ofNullable(connectionStatusDetails);
}
@Override
public JsonObject toJson(final JsonSchemaVersion schemaVersion, final Predicate<JsonField> thePredicate) {
final Predicate<JsonField> predicate = schemaVersion.and(thePredicate);
final JsonObjectBuilder jsonObjectBuilder = JsonFactory.newObjectBuilder();
jsonObjectBuilder.set(JsonFields.CONNECTION_STATUS, connectionStatus.getName(), predicate);
if (connectionStatusDetails != null) {
jsonObjectBuilder.set(JsonFields.CONNECTION_STATUS_DETAILS, connectionStatusDetails, predicate);
}
return jsonObjectBuilder.build();
}
@Override
public boolean equals(final Object o) {
if (this == o) {return true;}
if (!(o instanceof ImmutableConnectionMetrics)) {return false;}
final ImmutableConnectionMetrics that = (ImmutableConnectionMetrics) o;
return connectionStatus == that.connectionStatus &&
Objects.equals(connectionStatusDetails, that.connectionStatusDetails);
}
@Override
public int hashCode() {
return Objects.hash(connectionStatus, connectionStatusDetails);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
"connectionStatus=" + connectionStatus +
", connectionStatusDetails=" + connectionStatusDetails +
"]";
}
}