/
UnmodifiableExternalMessage.java
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/
UnmodifiableExternalMessage.java
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/*
* Copyright (c) 2017-2018 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
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.services.models.connectivity;
import java.nio.ByteBuffer;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import javax.annotation.Nullable;
import org.eclipse.ditto.model.base.auth.AuthorizationContext;
import org.eclipse.ditto.services.models.connectivity.placeholder.EnforcementFilter;
/**
* Implementation of {@link ExternalMessage} that SHOULD NOT be modified
* because objects of this class are sent as messages between actors.
*/
final class UnmodifiableExternalMessage implements ExternalMessage {
private final Map<String, String> headers;
private final boolean response;
private final boolean error;
private final PayloadType payloadType;
@Nullable private final String textPayload;
@Nullable private final ByteBuffer bytePayload;
@Nullable private final AuthorizationContext authorizationContext;
@Nullable private final EnforcementFilter<String> enforcementFilter;
UnmodifiableExternalMessage(final Map<String, String> headers,
final boolean response,
final boolean error,
final PayloadType payloadType,
@Nullable final String textPayload,
@Nullable final ByteBuffer bytePayload,
@Nullable final AuthorizationContext authorizationContext,
@Nullable final EnforcementFilter<String> enforcementFilter) {
this.headers = Collections.unmodifiableMap(new HashMap<>(headers));
this.response = response;
this.error = error;
this.payloadType = payloadType;
this.textPayload = textPayload;
this.bytePayload = bytePayload;
this.authorizationContext = authorizationContext;
this.enforcementFilter = enforcementFilter;
}
@Override
public Map<String, String> getHeaders() {
return headers;
}
@Override
public ExternalMessage withHeader(final String key, final String value) {
return new UnmodifiableExternalMessageBuilder(this).withAdditionalHeaders(key, value).build();
}
@Override
public ExternalMessage withHeaders(final Map<String, String> additionalHeaders) {
return new UnmodifiableExternalMessageBuilder(this)
.withAdditionalHeaders(additionalHeaders)
.build();
}
@Override
public Optional<String> findHeader(final String key) {
return Optional.ofNullable(headers.get(key)).filter(s -> !s.isEmpty());
}
@Override
public Optional<String> findHeaderIgnoreCase(final String key) {
return headers.entrySet().stream().filter(e -> key.equalsIgnoreCase(e.getKey())).findFirst()
.map(Map.Entry::getValue);
}
@Override
public boolean isTextMessage() {
return PayloadType.TEXT.equals(payloadType);
}
@Override
public boolean isBytesMessage() {
return PayloadType.BYTES.equals(payloadType);
}
@Override
public Optional<String> getTextPayload() {
return Optional.ofNullable(textPayload);
}
@Override
public Optional<ByteBuffer> getBytePayload() {
return Optional.ofNullable(bytePayload);
}
@Override
public PayloadType getPayloadType() {
return payloadType;
}
@Override
public boolean isResponse() {
return response;
}
@Override
public boolean isError() {
return error;
}
@Override
public Optional<AuthorizationContext> getAuthorizationContext() {
return Optional.ofNullable(authorizationContext);
}
@Override
public Optional<EnforcementFilter<String>> getEnforcementFilter() {
return Optional.ofNullable(enforcementFilter);
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final UnmodifiableExternalMessage that = (UnmodifiableExternalMessage) o;
return Objects.equals(headers, that.headers) &&
Objects.equals(textPayload, that.textPayload) &&
Objects.equals(bytePayload, that.bytePayload) &&
Objects.equals(authorizationContext, that.authorizationContext) &&
Objects.equals(enforcementFilter, that.enforcementFilter) &&
Objects.equals(response, that.response) &&
Objects.equals(error, that.error) &&
payloadType == that.payloadType;
}
@Override
public int hashCode() {
return Objects.hash(headers, textPayload, bytePayload, payloadType, response, error, authorizationContext,
enforcementFilter);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
"headers=" + headers +
", response=" + response +
", error=" + error +
", authorizationContext=" + authorizationContext +
", enforcement=" + enforcementFilter +
", payloadType=" + payloadType +
", textPayload=" + textPayload +
", bytePayload=" +
(bytePayload == null ? "null" : ("<binary> (size :" + bytePayload.array().length + ")")) + "'" +
"]";
}
}