/
RetrieveConnectionStatus.java
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/
RetrieveConnectionStatus.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.signals.commands.connectivity.query;
import static org.eclipse.ditto.model.base.common.ConditionChecker.checkNotNull;
import java.util.Objects;
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.headers.DittoHeaders;
import org.eclipse.ditto.model.base.json.JsonSchemaVersion;
import org.eclipse.ditto.model.connectivity.Connection;
import org.eclipse.ditto.model.connectivity.ConnectionStatus;
import org.eclipse.ditto.signals.commands.base.AbstractCommand;
import org.eclipse.ditto.signals.commands.base.CommandJsonDeserializer;
import org.eclipse.ditto.signals.commands.connectivity.ConnectivityCommand;
/**
* Command which retrieves the {@link ConnectionStatus} of a {@link
* Connection}.
*/
@Immutable
public final class RetrieveConnectionStatus extends AbstractCommand<RetrieveConnectionStatus>
implements ConnectivityQueryCommand<RetrieveConnectionStatus> {
/**
* Name of this command.
*/
public static final String NAME = "retrieveConnectionStatus";
/**
* Type of this command.
*/
public static final String TYPE = TYPE_PREFIX + NAME;
private final String connectionId;
private RetrieveConnectionStatus(final String connectionId, final DittoHeaders dittoHeaders) {
super(TYPE, dittoHeaders);
this.connectionId = connectionId;
}
/**
* Returns a new instance of {@code RetrieveConnectionStatus}.
*
* @param connectionId the identifier of the connection to be retrieved.
* @param dittoHeaders the headers of the request.
* @return a new RetrieveConnectionStatus command.
* @throws NullPointerException if any argument is {@code null}.
*/
public static RetrieveConnectionStatus of(final String connectionId, final DittoHeaders dittoHeaders) {
checkNotNull(connectionId, "Connection ID");
return new RetrieveConnectionStatus(connectionId, dittoHeaders);
}
/**
* Creates a new {@code RetrieveConnectionStatus} from a JSON string.
*
* @param jsonString the JSON string of which the command is to be retrieved.
* @param dittoHeaders the headers of the command.
* @return the command.
* @throws NullPointerException if {@code jsonString} is {@code null}.
* @throws IllegalArgumentException if {@code jsonString} is empty.
* @throws org.eclipse.ditto.json.JsonParseException if the passed in {@code jsonString} was not in the expected
* format.
*/
public static RetrieveConnectionStatus fromJson(final String jsonString, final DittoHeaders dittoHeaders) {
return fromJson(JsonFactory.newObject(jsonString), dittoHeaders);
}
/**
* Creates a new {@code RetrieveConnectionStatus} from a JSON object.
*
* @param jsonObject the JSON object of which the command is to be created.
* @param dittoHeaders the headers of the command.
* @return the command.
* @throws NullPointerException if {@code jsonObject} is {@code null}.
* @throws org.eclipse.ditto.json.JsonParseException if the passed in {@code jsonObject} was not in the expected
* format.
*/
public static RetrieveConnectionStatus fromJson(final JsonObject jsonObject,
final DittoHeaders dittoHeaders) {
return new CommandJsonDeserializer<RetrieveConnectionStatus>(TYPE, jsonObject).deserialize(() -> {
final String readConnectionId = jsonObject.getValueOrThrow(ConnectivityCommand.JsonFields.JSON_CONNECTION_ID);
return of(readConnectionId, dittoHeaders);
});
}
@Override
protected void appendPayload(final JsonObjectBuilder jsonObjectBuilder, final JsonSchemaVersion schemaVersion,
final Predicate<JsonField> thePredicate) {
final Predicate<JsonField> predicate = schemaVersion.and(thePredicate);
jsonObjectBuilder.set(ConnectivityCommand.JsonFields.JSON_CONNECTION_ID, connectionId, predicate);
}
@Override
public String getConnectionId() {
return connectionId;
}
@Override
public RetrieveConnectionStatus setDittoHeaders(final DittoHeaders dittoHeaders) {
return of(connectionId, dittoHeaders);
}
@Override
protected boolean canEqual(@Nullable final Object other) {
return (other instanceof RetrieveConnectionStatus);
}
@Override
public boolean equals(@Nullable final Object o) {
if (this == o) {return true;}
if (o == null || getClass() != o.getClass()) {return false;}
if (!super.equals(o)) {return false;}
final RetrieveConnectionStatus that = (RetrieveConnectionStatus) o;
return Objects.equals(connectionId, that.connectionId);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), connectionId);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
super.toString() +
", connectionId=" + connectionId +
"]";
}
}