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#pragma once
#include "store-api.hh"
#include "goal.hh"
#include "realisation.hh"
namespace nix {
class Worker;
// Substitution of a derivation output.
// This is done in three steps:
// 1. Fetch the output info from a substituter
// 2. Substitute the corresponding output path
// 3. Register the output info
class DrvOutputSubstitutionGoal : public Goal {
private:
// The drv output we're trying to substitue
DrvOutput id;
// The realisation corresponding to the given output id.
// Will be filled once we can get it.
std::optional<Realisation> outputInfo;
/* The remaining substituters. */
std::list<ref<Store>> subs;
/* Whether a substituter failed. */
bool substituterFailed = false;
public:
DrvOutputSubstitutionGoal(const DrvOutput& id, Worker & worker, RepairFlag repair = NoRepair, std::optional<ContentAddress> ca = std::nullopt);
typedef void (DrvOutputSubstitutionGoal::*GoalState)();
GoalState state;
void init();
void tryNext();
void outPathValid();
void finished();
void timedOut(Error && ex) override { abort(); };
string key() override;
void work() override;
};
}
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