-
Notifications
You must be signed in to change notification settings - Fork 215
/
EdgeCommandForwarderExtension.java
60 lines (48 loc) · 2.15 KB
/
EdgeCommandForwarderExtension.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
/*
* Copyright (c) 2022 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.edge.service.dispatching;
import static org.eclipse.ditto.base.model.common.ConditionChecker.checkNotNull;
import org.eclipse.ditto.base.service.DittoExtensionPoint;
import akka.actor.AbstractActor.Receive;
import akka.actor.ActorContext;
import akka.actor.ActorSystem;
/**
* This extension allows to extend commands that are forwarded from the edges of ditto to other microservices by
* handling them in the {@link Receive} provided by {@link #getReceiveExtension(ActorContext)}.
*/
public interface EdgeCommandForwarderExtension extends DittoExtensionPoint {
static EdgeCommandForwarderExtension get(final ActorSystem actorSystem) {
checkNotNull(actorSystem, "actorSystem");
return ExtensionId.INSTANCE.get(actorSystem);
}
/**
* Builds the receive extension to allow custom handling of messages.
* This receive will be applied BEFORE the default receives of {@link EdgeCommandForwarderActor}, so it's possible
* to overwrite the default handling.
*
* @param actorContext can be used for example to determine the original sender of a message.
* @return The desired receive extension.
*/
Receive getReceiveExtension(ActorContext actorContext);
final class ExtensionId extends DittoExtensionPoint.ExtensionId<EdgeCommandForwarderExtension> {
private static final String CONFIG_PATH = "ditto.edge-command-forwarder-extension";
private static final ExtensionId INSTANCE = new ExtensionId(EdgeCommandForwarderExtension.class);
private ExtensionId(final Class<EdgeCommandForwarderExtension> parentClass) {
super(parentClass);
}
@Override
protected String getConfigPath() {
return CONFIG_PATH;
}
}
}