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c036d75f9e
Need to decouple parsing from actually opening a store for Machine configs. Co-authored-by: Théophane Hufschmitt <7226587+thufschmitt@users.noreply.github.com> Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
#pragma once
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///@file
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#include <variant>
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#include "types.hh"
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namespace nix {
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/**
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* A parsed Store URI (URI is a slight misnomer...), parsed but not yet
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* resolved to a specific instance and query parms validated.
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*
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* Supported values are:
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*
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* - ‘local’: The Nix store in /nix/store and database in
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* /nix/var/nix/db, accessed directly.
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*
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* - ‘daemon’: The Nix store accessed via a Unix domain socket
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* connection to nix-daemon.
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*
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* - ‘unix://<path>’: The Nix store accessed via a Unix domain socket
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* connection to nix-daemon, with the socket located at <path>.
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*
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* - ‘auto’ or ‘’: Equivalent to ‘local’ or ‘daemon’ depending on
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* whether the user has write access to the local Nix
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* store/database.
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*
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* - ‘file://<path>’: A binary cache stored in <path>.
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*
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* - ‘https://<path>’: A binary cache accessed via HTTP.
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*
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* - ‘s3://<path>’: A writable binary cache stored on Amazon's Simple
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* Storage Service.
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*
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* - ‘ssh://[user@]<host>’: A remote Nix store accessed by running
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* ‘nix-store --serve’ via SSH.
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*
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* You can pass parameters to the store type by appending
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* ‘?key=value&key=value&...’ to the URI.
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*/
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struct StoreReference
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{
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using Params = std::map<std::string, std::string>;
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/**
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* Special store reference `""` or `"auto"`
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*/
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struct Auto
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{
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inline bool operator==(const Auto & rhs) const = default;
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inline auto operator<=>(const Auto & rhs) const = default;
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};
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/**
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* General case, a regular `scheme://authority` URL.
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*/
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struct Specified
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{
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std::string scheme;
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std::string authority;
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bool operator==(const Specified & rhs) const = default;
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auto operator<=>(const Specified & rhs) const = default;
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};
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typedef std::variant<Auto, Specified> Variant;
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Variant variant;
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Params params;
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bool operator==(const StoreReference & rhs) const = default;
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auto operator<=>(const StoreReference & rhs) const = default;
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static StoreReference parse(const std::string & uri, const Params & extraParams = Params{});
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};
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/**
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* Split URI into protocol+hierarchy part and its parameter set.
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*/
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std::pair<std::string, StoreReference::Params> splitUriAndParams(const std::string & uri);
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}
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