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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/messagebus/blobref.h>
#include <vespa/messagebus/common.h>
#include <vespa/vespalib/component/version.h>
#include <vespa/vespalib/net/tls/capability_set.h>
namespace mbus {
class RoutingNode;
class RPCNetwork;
/**
* This interface defines the necessary methods to process incoming and send
* outgoing RPC sends. The {@link RPCNetwork} maintains a list of supported RPC
* signatures, and dispatches sends to the corresponding adapter.
*/
class RPCSendAdapter
{
protected:
RPCSendAdapter() = default;
public:
using CapabilitySet = vespalib::net::tls::CapabilitySet;
RPCSendAdapter(const RPCSendAdapter &) = delete;
RPCSendAdapter & operator = (const RPCSendAdapter &) = delete;
/**
* Required for inheritance.
*/
virtual ~RPCSendAdapter() { }
/**
* Attaches this adapter to the given network.
*
* @param net The network to attach to.
* @param required_capabilities capabilities required to invoke mbus on this server
*/
virtual void attach(RPCNetwork &net, CapabilitySet required_capabilities) = 0;
/**
* Performs the actual sending to the given recipient.
*
* @param recipient The recipient to send to.
* @param version The version for which the payload is serialized.
* @param payload The already serialized payload of the message to send.
* @param timeRemaining The time remaining until the message expires.
*/
virtual void send(RoutingNode &recipient, const vespalib::Version &version,
BlobRef payload, duration timeRemaining) = 0;
/**
* Performs the actual sending to the given recipient.
*
* @param recipient The recipient to send to.
* @param version The version for which the payload is serialized.
* @param payload The already serialized payload of the message to send.
* @param timeRemaining The time remaining until the message expires.
*/
virtual void sendByHandover(RoutingNode &recipient, const vespalib::Version &version,
Blob payload, duration timeRemaining) = 0;
};
} // namespace mbus
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