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https://github.com/privatevoid-net/nix-super.git
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0746951be1
* Finish converting existing comments for internal API docs 99% of this was just reformatting existing comments. Only two exceptions: - Expanded upon `BuildResult::status` compat note - Split up file-level `symbol-table.hh` doc comments to get per-definition docs Also fixed a few whitespace goofs, turning leading tabs to spaces and removing trailing spaces. Picking up from #8133 * Fix two things from comments * Use triple-backtick not indent for `dumpPath` * Convert GNU-style `\`..'` quotes to markdown style in API docs This will render correctly.
78 lines
1.6 KiB
C++
78 lines
1.6 KiB
C++
#pragma once
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///@file
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#include "store-api.hh"
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#include "goal.hh"
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#include "realisation.hh"
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#include <thread>
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#include <future>
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namespace nix {
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class Worker;
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/**
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* Substitution of a derivation output.
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* This is done in three steps:
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* 1. Fetch the output info from a substituter
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* 2. Substitute the corresponding output path
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* 3. Register the output info
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*/
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class DrvOutputSubstitutionGoal : public Goal {
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/**
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* The drv output we're trying to substitue
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*/
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DrvOutput id;
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/**
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* The realisation corresponding to the given output id.
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* Will be filled once we can get it.
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*/
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std::shared_ptr<const Realisation> outputInfo;
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/**
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* The remaining substituters.
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*/
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std::list<ref<Store>> subs;
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/**
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* The current substituter.
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*/
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std::shared_ptr<Store> sub;
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struct DownloadState
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{
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Pipe outPipe;
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std::promise<std::shared_ptr<const Realisation>> promise;
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};
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std::shared_ptr<DownloadState> downloadState;
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/**
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* Whether a substituter failed.
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*/
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bool substituterFailed = false;
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public:
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DrvOutputSubstitutionGoal(const DrvOutput& id, Worker & worker, RepairFlag repair = NoRepair, std::optional<ContentAddress> ca = std::nullopt);
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typedef void (DrvOutputSubstitutionGoal::*GoalState)();
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GoalState state;
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void init();
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void tryNext();
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void realisationFetched();
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void outPathValid();
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void finished();
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void timedOut(Error && ex) override { abort(); };
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std::string key() override;
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void work() override;
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void handleEOF(int fd) override;
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};
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}
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