local-fs-store.hh

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#pragma once
 
#include "lix/libstore/store-api.hh"
#include "lix/libstore/gc-store.hh"
#include "lix/libstore/log-store.hh"
 
namespace nix {
 
struct LocalFSStoreConfig : virtual StoreConfig
{
    using StoreConfig::StoreConfig;
 
    const PathsSetting<std::optional<Path>>  rootDir{this, std::nullopt,
        "root",
        "Directory prefixed to all other paths."};
 
    const PathsSetting<Path> stateDir{this,
        rootDir.get() ? *rootDir.get() + "/nix/var/nix" : settings.nixStateDir,
        "state",
        "Directory where Lix will store state."};
 
    const PathsSetting<Path> logDir{this,
        rootDir.get() ? *rootDir.get() + "/nix/var/log/nix" : settings.nixLogDir,
        "log",
        "directory where Lix will store log files."};
 
    const PathsSetting<Path> realStoreDir{this,
        rootDir.get() ? *rootDir.get() + "/nix/store" : storeDir, "real",
        "Physical path of the Nix store."};
};
 
class LocalFSStore : public virtual Store,
    public virtual GcStore,
    public virtual LogStore
{
public:
    inline static std::string operationName = "Local Filesystem Store";
 
    const static std::string drvsLogDir;
 
    LocalFSStoreConfig & config() override = 0;
    const LocalFSStoreConfig & config() const override = 0;
 
    kj::Promise<Result<box_ptr<Source>>> narFromPath(const StorePath & path) override;
    ref<FSAccessor> getFSAccessor() override;

    virtual kj::Promise<Result<Path>>
    addPermRoot(const StorePath & storePath, const Path & gcRoot) = 0;
 
    virtual Path getRealStoreDir() { return config().realStoreDir; }
 
    Path toRealPath(const Path & storePath) override
    {
        assert(isInStore(storePath));
        return getRealStoreDir() + "/" + std::string(storePath, config().storeDir.size() + 1);
    }
 
    kj::Promise<Result<std::optional<std::string>>> getBuildLogExact(const StorePath & path) override;
 
};
 
}