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#pragma once
///@file
#include "store-api.hh"
#include "gc-store.hh"
#include "log-store.hh"
namespace nix {
struct LocalFSStoreConfig : virtual StoreConfig
{
using StoreConfig::StoreConfig;
const OptionalPathSetting rootDir{this, std::nullopt,
"root",
"Directory prefixed to all other paths."};
const PathSetting stateDir{this,
rootDir.get() ? *rootDir.get() + "/nix/var/nix" : settings.nixStateDir,
"state",
"Directory where Nix will store state."};
const PathSetting logDir{this,
rootDir.get() ? *rootDir.get() + "/nix/var/log/nix" : settings.nixLogDir,
"log",
"directory where Nix will store log files."};
const PathSetting realStoreDir{this,
rootDir.get() ? *rootDir.get() + "/nix/store" : storeDir, "real",
"Physical path of the Nix store."};
};
class LocalFSStore : public virtual LocalFSStoreConfig,
public virtual Store,
public virtual GcStore,
public virtual LogStore
{
public:
inline static std::string operationName = "Local Filesystem Store";
const static std::string drvsLogDir;
LocalFSStore(const Params & params);
void narFromPath(const StorePath & path, Sink & sink) override;
ref<FSAccessor> getFSAccessor() override;
/**
* Creates symlink from the `gcRoot` to the `storePath` and
* registers the `gcRoot` as a permanent GC root. The `gcRoot`
* symlink lives outside the store and is created and owned by the
* user.
*
* @param gcRoot The location of the symlink.
*
* @param storePath The store object being rooted. The symlink will
* point to `toRealPath(store.printStorePath(storePath))`.
*
* How the permanent GC root corresponding to this symlink is
* managed is implementation-specific.
*/
virtual Path addPermRoot(const StorePath & storePath, const Path & gcRoot) = 0;
virtual Path getRealStoreDir() { return realStoreDir; }
Path toRealPath(const Path & storePath) override
{
assert(isInStore(storePath));
return getRealStoreDir() + "/" + std::string(storePath, storeDir.size() + 1);
}
std::optional<std::string> getBuildLogExact(const StorePath & path) override;
};
}
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