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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "hop.h"
namespace mbus {
class HopSpec;
/**
* A hop blueprint is a stored prototype of a hop that has been created from a {@link HopSpec} object. A map of these
* are stored in a {@link RoutingTable}.
*/
class HopBlueprint {
private:
std::vector<IHopDirective::SP> _selector;
std::vector<Hop> _recipients;
bool _ignoreResult;
public:
/**
* Create a new blueprint from a specification object.
*
* @param spec The specification to base instantiation on.
*/
HopBlueprint(const HopSpec &spec);
/**
* Creates a hop instance from thie blueprint.
*
* @return The created hop.
*/
Hop::UP create() const { return Hop::UP(new Hop(_selector, _ignoreResult)); }
/**
* Returns whether or not there are any directives contained in this hop.
*
* @return True if there is at least one directive.
*/
bool hasDirectives() const { return !_selector.empty(); }
/**
* Returns the number of directives contained in this hop.
*
* @return The number of directives.
*/
uint32_t getNumDirectives() const { return _selector.size(); }
/**
* Returns the directive at the given index.
*
* @param i The index of the directive to return.
* @return The item.
*/
IHopDirective::SP getDirective(uint32_t i) const { return _selector[i]; }
/**
* Returns whether or not there are any recipients that the selector can choose from.
*
* @return True if there is at least one recipient.
*/
bool hasRecipients() const { return !_recipients.empty(); }
/**
* Returns the number of recipients that the selector can choose from.
*
* @return The number of recipients.
*/
uint32_t getNumRecipients() const { return _recipients.size(); }
/**
* Returns the recipient at the given index.
*
* @param i The index of the recipient to return.
* @return The recipient at the given index.
*/
const Hop &getRecipient(uint32_t i) const { return _recipients[i]; }
/**
* Returns whether or not to ignore the result when routing through this hop.
*
* @return True to ignore the result.
*/
bool getIgnoreResult() const { return _ignoreResult; }
/**
* Returns a string representation of this.
*
* @return The string.
*/
string toString() const;
};
} // namespace mbus
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