/
ConnectionData.java
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/
ConnectionData.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.services.amqpbridge.messaging.persistence;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import org.eclipse.ditto.json.JsonArray;
import org.eclipse.ditto.json.JsonCollectors;
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;
import org.eclipse.ditto.json.JsonObjectBuilder;
import org.eclipse.ditto.json.JsonParseException;
import org.eclipse.ditto.json.JsonValue;
import org.eclipse.ditto.model.amqpbridge.AmqpBridgeModelFactory;
import org.eclipse.ditto.model.amqpbridge.Connection;
import org.eclipse.ditto.model.amqpbridge.ConnectionStatus;
import org.eclipse.ditto.model.amqpbridge.MappingContext;
import org.eclipse.ditto.model.base.json.FieldType;
import org.eclipse.ditto.model.base.json.JsonSchemaVersion;
import org.eclipse.ditto.model.base.json.Jsonifiable;
/**
* Data representing the state of a Connection which is used in order to persist snapshot state into MongoDB.
*/
public final class ConnectionData implements Jsonifiable.WithFieldSelectorAndPredicate<JsonField> {
private static final JsonFieldDefinition<JsonObject> CONNECTION =
JsonFactory.newJsonObjectFieldDefinition("connection", FieldType.REGULAR, JsonSchemaVersion.V_1,
JsonSchemaVersion.V_2);
private static final JsonFieldDefinition<String> CONNECTION_STATUS =
JsonFactory.newStringFieldDefinition("connectionStatus", FieldType.REGULAR, JsonSchemaVersion.V_1,
JsonSchemaVersion.V_2);
private static final JsonFieldDefinition<JsonArray> MAPPING_CONTEXTS =
JsonFactory.newJsonArrayFieldDefinition("mappingContexts", FieldType.REGULAR, JsonSchemaVersion.V_1,
JsonSchemaVersion.V_2);
private final Connection connection;
private final ConnectionStatus connectionStatus;
private final List<MappingContext> mappingContexts;
/**
* Constructs a new connection data instance.
* @param connection Connection information of the connection data.
* @param connectionStatus ConnectionStatus information of the connection data.
* @param mappingContexts the mapping contexts
*/
public ConnectionData(final Connection connection, final ConnectionStatus connectionStatus,
final List<MappingContext> mappingContexts) {
this.connection = connection;
this.connectionStatus = connectionStatus;
this.mappingContexts = Collections.unmodifiableList(new ArrayList<>(mappingContexts));
}
/**
* @return the Connection information of the connection data.
*/
public Connection getConnection() {
return connection;
}
/**
* @return the ConnectionStatus information of the connection data.
*/
public ConnectionStatus getConnectionStatus() {
return connectionStatus;
}
/**
* @return the mapping contexts configured for this connection
*/
public List<MappingContext> getMappingContexts() {
return mappingContexts;
}
/**
* Creates a new {@code ConnectionData} object from the specified JSON object.
*
* @param jsonObject a JSON object which provides the data for the ConnectionData to be created.
* @return a new ConnectionData 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.
*/
static ConnectionData fromJson(final JsonObject jsonObject) {
final JsonObject readConnection = jsonObject.getValueOrThrow(CONNECTION);
final Connection connection = AmqpBridgeModelFactory.connectionFromJson(readConnection);
final String readConnectionStatus = jsonObject.getValueOrThrow(CONNECTION_STATUS);
final ConnectionStatus connectionStatus =
ConnectionStatus.forName(readConnectionStatus).orElseThrow(() -> JsonParseException.newBuilder()
.message("Could not create ConnectionStatus from: " + jsonObject)
.build());
final JsonArray readMappingContexts = jsonObject.getValueOrThrow(MAPPING_CONTEXTS);
final List<MappingContext> mappingContexts = readMappingContexts.stream()
.filter(JsonValue::isObject)
.map(JsonValue::asObject)
.map(AmqpBridgeModelFactory::mappingContextFromJson)
.collect(Collectors.toList());
return new ConnectionData(connection, connectionStatus, mappingContexts);
}
@Override
public JsonObject toJson() {
return toJson(FieldType.notHidden());
}
@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(CONNECTION, connection.toJson(schemaVersion, thePredicate), predicate);
jsonObjectBuilder.set(CONNECTION_STATUS, connectionStatus.getName(), predicate);
jsonObjectBuilder.set(MAPPING_CONTEXTS, mappingContexts.stream()
.map(ms -> ms.toJson(schemaVersion, thePredicate))
.collect(JsonCollectors.valuesToArray()), predicate);
return jsonObjectBuilder.build();
}
@Override
public JsonObject toJson(final JsonSchemaVersion schemaVersion, final JsonFieldSelector fieldSelector) {
return toJson(schemaVersion, FieldType.notHidden()).get(fieldSelector);
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (!(o instanceof ConnectionData)) {
return false;
}
final ConnectionData that = (ConnectionData) o;
return Objects.equals(connection, that.connection) &&
connectionStatus == that.connectionStatus &&
Objects.equals(mappingContexts, that.mappingContexts);
}
@Override
public int hashCode() {
return Objects.hash(connection, connectionStatus, mappingContexts);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
"connection=" + connection +
", connectionStatus=" + connectionStatus +
", mappingContexts=" + mappingContexts +
"]";
}
}