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#include "local-binary-cache-store.hh"
#include "binary-cache-store.hh"
#include "globals.hh"
#include "nar-info-disk-cache.hh"
#include <atomic>
namespace nix {
struct LocalBinaryCacheStoreConfig : virtual BinaryCacheStoreConfig
{
using BinaryCacheStoreConfig::BinaryCacheStoreConfig;
const std::string name() override { return "Local Binary Cache Store"; }
std::string doc() override
{
return
#include "local-binary-cache-store.md"
;
}
};
class LocalBinaryCacheStore : public virtual LocalBinaryCacheStoreConfig, public virtual BinaryCacheStore
{
private:
Path binaryCacheDir;
public:
LocalBinaryCacheStore(
const std::string scheme,
const Path & binaryCacheDir,
const Params & params)
: StoreConfig(params)
, BinaryCacheStoreConfig(params)
, LocalBinaryCacheStoreConfig(params)
, Store(params)
, BinaryCacheStore(params)
, binaryCacheDir(binaryCacheDir)
{
}
void init() override;
std::string getUri() override
{
return "file://" + binaryCacheDir;
}
static std::set<std::string> uriSchemes();
protected:
bool fileExists(const std::string & path) override;
void upsertFile(const std::string & path,
std::shared_ptr<std::basic_iostream<char>> istream,
const std::string & mimeType) override
{
auto path2 = binaryCacheDir + "/" + path;
static std::atomic<int> counter{0};
Path tmp = fmt("%s.tmp.%d.%d", path2, getpid(), ++counter);
AutoDelete del(tmp, false);
StreamToSourceAdapter source(istream);
writeFile(tmp, source);
renameFile(tmp, path2);
del.cancel();
}
box_ptr<Source> getFile(const std::string & path) override
{
try {
return make_box_ptr<GeneratorSource>(readFileSource(binaryCacheDir + "/" + path));
} catch (SysError & e) {
if (e.errNo == ENOENT)
throw NoSuchBinaryCacheFile("file '%s' does not exist in binary cache", path);
throw;
}
}
StorePathSet queryAllValidPaths() override
{
StorePathSet paths;
for (auto & entry : readDirectory(binaryCacheDir)) {
if (entry.name.size() != 40 ||
!entry.name.ends_with(".narinfo"))
continue;
paths.insert(parseStorePath(
storeDir + "/" + entry.name.substr(0, entry.name.size() - 8)
+ "-" + MissingName));
}
return paths;
}
std::optional<TrustedFlag> isTrustedClient() override
{
return Trusted;
}
};
void LocalBinaryCacheStore::init()
{
createDirs(binaryCacheDir + "/nar");
createDirs(binaryCacheDir + "/" + realisationsPrefix);
if (writeDebugInfo)
createDirs(binaryCacheDir + "/debuginfo");
createDirs(binaryCacheDir + "/log");
BinaryCacheStore::init();
}
bool LocalBinaryCacheStore::fileExists(const std::string & path)
{
return pathExists(binaryCacheDir + "/" + path);
}
std::set<std::string> LocalBinaryCacheStore::uriSchemes()
{
if (getEnv("_NIX_FORCE_HTTP") == "1")
return {};
else
return {"file"};
}
void registerLocalBinaryCacheStore() {
StoreImplementations::add<LocalBinaryCacheStore, LocalBinaryCacheStoreConfig>();
}
}
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