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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 <vespa/vespalib/stllike/string.h>
#include <memory>
class FRT_Supervisor;
class FNET_Transport;
namespace config {
/**
* Interface used to wait for the availability of files and map file
* references to concrete paths.
**/
struct FileAcquirer {
virtual vespalib::string wait_for(const vespalib::string &file_ref, double timeout_s) = 0;
virtual ~FileAcquirer() {}
};
/**
* File acquirer implementation using rpc to talk to an external rpc
* server to wait for files to be ready.
**/
class RpcFileAcquirer : public FileAcquirer
{
private:
std::unique_ptr<FRT_Supervisor> _orb;
vespalib::string _spec;
public:
RpcFileAcquirer(FNET_Transport & transport, const vespalib::string &spec);
vespalib::string wait_for(const vespalib::string &file_ref, double timeout_s) override;
~RpcFileAcquirer() override;
};
} // namespace config
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