/
ConnectivityErrorResponse.java
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/
ConnectivityErrorResponse.java
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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.signals.commands.connectivity;
import static java.util.Objects.requireNonNull;
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.JsonMissingFieldException;
import org.eclipse.ditto.json.JsonObject;
import org.eclipse.ditto.json.JsonObjectBuilder;
import org.eclipse.ditto.json.JsonValue;
import org.eclipse.ditto.model.base.exceptions.DittoJsonException;
import org.eclipse.ditto.model.base.exceptions.DittoRuntimeException;
import org.eclipse.ditto.model.base.headers.DittoHeaders;
import org.eclipse.ditto.model.base.json.JsonParsableCommandResponse;
import org.eclipse.ditto.model.base.json.JsonSchemaVersion;
import org.eclipse.ditto.signals.base.GlobalErrorRegistry;
import org.eclipse.ditto.signals.commands.base.AbstractCommandResponse;
import org.eclipse.ditto.signals.commands.base.ErrorResponse;
/**
* Response to a {@link ConnectivityCommand} which wraps the exception thrown when processing the command.
*/
@Immutable
@JsonParsableCommandResponse(type = ConnectivityErrorResponse.TYPE)
public final class ConnectivityErrorResponse extends AbstractCommandResponse<ConnectivityErrorResponse> implements
ConnectivityCommandResponse<ConnectivityErrorResponse>, ErrorResponse<ConnectivityErrorResponse> {
/**
* Type of this response.
*/
public static final String TYPE = TYPE_PREFIX + "errorResponse";
private static final GlobalErrorRegistry ERROR_REGISTRY = GlobalErrorRegistry.getInstance();
private final DittoRuntimeException dittoRuntimeException;
private ConnectivityErrorResponse(final DittoRuntimeException dittoRuntimeException,
final DittoHeaders dittoHeaders) {
super(TYPE, dittoRuntimeException.getStatusCode(), dittoHeaders);
this.dittoRuntimeException = requireNonNull(dittoRuntimeException, "The CR Runtime Exception must not be null");
}
/**
* Creates a new {@code ConnectivityErrorResponse} for the specified {@code dittoRuntimeException}.
*
* @param dittoRuntimeException the exception.
* @return the response.
* @throws NullPointerException if one of the arguments is {@code null}.
*/
public static ConnectivityErrorResponse of(final DittoRuntimeException dittoRuntimeException) {
return new ConnectivityErrorResponse(dittoRuntimeException, dittoRuntimeException.getDittoHeaders());
}
/**
* Creates a new {@code ConnectivityErrorResponse} for the specified {@code dittoRuntimeException}.
*
* @param dittoRuntimeException the exception.
* @param dittoHeaders the headers of the command which caused the exception.
* @return the response.
* @throws NullPointerException if one of the arguments is {@code null}.
*/
public static ConnectivityErrorResponse of(final DittoRuntimeException dittoRuntimeException,
final DittoHeaders dittoHeaders) {
return new ConnectivityErrorResponse(dittoRuntimeException, dittoHeaders);
}
/**
* Creates a new {@code ConnectivityErrorResponse} containing the causing {@code DittoRuntimeException} which is
* deserialized from the passed {@code jsonString}.
*
* @param jsonString the JSON string representation of the causing {@code DittoRuntimeException}.
* @param dittoHeaders the DittoHeaders to use.
* @return the ConnectivityErrorResponse.
*/
public static ConnectivityErrorResponse fromJson(final String jsonString, final DittoHeaders dittoHeaders) {
final JsonObject jsonObject =
DittoJsonException.wrapJsonRuntimeException(() -> JsonFactory.newObject(jsonString));
return fromJson(jsonObject, dittoHeaders);
}
/**
* Creates a new {@code ConnectivityErrorResponse} containing the causing {@code DittoRuntimeException} which is
* deserialized from the passed {@code jsonObject}.
*
* @param jsonObject the JSON representation of the causing {@code DittoRuntimeException}.
* @param dittoHeaders the DittoHeaders to use.
* @return the ConnectivityErrorResponse.
*/
public static ConnectivityErrorResponse fromJson(final JsonObject jsonObject, final DittoHeaders dittoHeaders) {
final JsonObject payload = jsonObject.getValue(ConnectivityCommandResponse.JsonFields.PAYLOAD)
.map(JsonValue::asObject)
.orElseThrow(
() -> new JsonMissingFieldException(
ConnectivityCommandResponse.JsonFields.PAYLOAD.getPointer()));
final DittoRuntimeException exception = ERROR_REGISTRY.parse(payload, dittoHeaders);
return of(exception, dittoHeaders);
}
/**
* Returns the wrapped {@code DittoRuntimeException}.
*
* @return the wrapped exception.
*/
public DittoRuntimeException getDittoRuntimeException() {
return dittoRuntimeException;
}
/**
* This command does not have an ID. Thus this implementation always returns an empty string.
*
* @return an empty string.
*/
@Override
public String getConnectionId() {
return "";
}
@Override
protected void appendPayload(final JsonObjectBuilder jsonObjectBuilder, final JsonSchemaVersion schemaVersion,
final Predicate<JsonField> thePredicate) {
final Predicate<JsonField> predicate = schemaVersion.and(thePredicate);
jsonObjectBuilder.set(
ConnectivityCommandResponse.JsonFields.PAYLOAD,
dittoRuntimeException.toJson(schemaVersion, thePredicate),
predicate);
}
@Override
public ConnectivityErrorResponse setDittoHeaders(final DittoHeaders dittoHeaders) {
return of(dittoRuntimeException, dittoHeaders);
}
@Override
protected boolean canEqual(@Nullable final Object other) {
return (other instanceof ConnectivityErrorResponse);
}
@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 ConnectivityErrorResponse
that = (ConnectivityErrorResponse) o;
return Objects.equals(dittoRuntimeException, that.dittoRuntimeException);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), dittoRuntimeException);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
super.toString() +
", dittoRuntimeException=" + dittoRuntimeException +
"]";
}
}