/
ThingCommandFactory.java
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/
ThingCommandFactory.java
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/*
* Copyright (c) 2019 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.services.utils.cacheloaders;
import java.util.UUID;
import org.eclipse.ditto.json.JsonFieldSelector;
import org.eclipse.ditto.model.base.headers.DittoHeaders;
import org.eclipse.ditto.model.things.Thing;
import org.eclipse.ditto.services.models.things.commands.sudo.SudoRetrieveThing;
import org.eclipse.ditto.services.utils.akka.LogUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Creates commands to access the Things service.
*/
final class ThingCommandFactory {
private static final Logger LOGGER = LoggerFactory.getLogger(ThingCommandFactory.class);
private ThingCommandFactory() {
throw new AssertionError();
}
/**
* Creates a sudo command for retrieving a thing.
*
* @param thingId the thingId.
* @return the created command.
*/
static SudoRetrieveThing sudoRetrieveThing(final String thingId) {
LOGGER.debug("Sending SudoRetrieveThing for Thing with ID <{}>", thingId);
final JsonFieldSelector jsonFieldSelector = JsonFieldSelector.newInstance(
Thing.JsonFields.ID.getPointer(),
Thing.JsonFields.REVISION.getPointer(),
Thing.JsonFields.ACL.getPointer(),
Thing.JsonFields.POLICY_ID.getPointer());
return SudoRetrieveThing.withOriginalSchemaVersion(thingId, jsonFieldSelector,
DittoHeaders.newBuilder().correlationId(getCorrelationId(thingId)).build());
}
private static String getCorrelationId(final String thingId) {
return LogUtil.getCorrelationId(() -> {
final String correlationId = UUID.randomUUID().toString();
LOGGER.debug("Found no correlation-id for SudoRetrieveThing on Thing <{}>. " +
"Using new correlation-id: {}", thingId, correlationId);
return correlationId;
});
}
}