forked from lix-project/lix
58cdab64ac
For each known realisation, store: - its output - its output path This comes with a set of needed changes: - New `realisations` module declaring the types needed for describing these mappings - New `Store::registerDrvOutput` method registering all the needed informations about a derivation output (also replaces `LocalStore::linkDeriverToPath`) - new `Store::queryRealisation` method to retrieve the informations for a derivations This introcudes some redundancy on the remote-store side between `wopQueryDerivationOutputMap` and `wopQueryRealisation`. However we might need to keep both (regardless of backwards compat) because we sometimes need to get some infos for all the outputs of a derivation (where `wopQueryDerivationOutputMap` is handy), but all the stores can't implement it − because listing all the outputs of a derivation isn't really possible for binary caches where the server doesn't allow to list a directory.
112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
#include "binary-cache-store.hh"
|
|
#include "globals.hh"
|
|
#include "nar-info-disk-cache.hh"
|
|
|
|
namespace nix {
|
|
|
|
struct LocalBinaryCacheStoreConfig : virtual BinaryCacheStoreConfig
|
|
{
|
|
using BinaryCacheStoreConfig::BinaryCacheStoreConfig;
|
|
|
|
const std::string name() override { return "Local Binary Cache Store"; }
|
|
};
|
|
|
|
class LocalBinaryCacheStore : public BinaryCacheStore, public virtual LocalBinaryCacheStoreConfig
|
|
{
|
|
private:
|
|
|
|
Path binaryCacheDir;
|
|
|
|
public:
|
|
|
|
LocalBinaryCacheStore(
|
|
const std::string scheme,
|
|
const Path & binaryCacheDir,
|
|
const Params & params)
|
|
: StoreConfig(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;
|
|
Path tmp = path2 + ".tmp." + std::to_string(getpid());
|
|
AutoDelete del(tmp, false);
|
|
StreamToSourceAdapter source(istream);
|
|
writeFile(tmp, source);
|
|
if (rename(tmp.c_str(), path2.c_str()))
|
|
throw SysError("renaming '%1%' to '%2%'", tmp, path2);
|
|
del.cancel();
|
|
}
|
|
|
|
void getFile(const std::string & path, Sink & sink) override
|
|
{
|
|
try {
|
|
readFile(binaryCacheDir + "/" + path, sink);
|
|
} catch (SysError & e) {
|
|
if (e.errNo == ENOENT)
|
|
throw NoSuchBinaryCacheFile("file '%s' does not exist in binary cache", path);
|
|
}
|
|
}
|
|
|
|
StorePathSet queryAllValidPaths() override
|
|
{
|
|
StorePathSet paths;
|
|
|
|
for (auto & entry : readDirectory(binaryCacheDir)) {
|
|
if (entry.name.size() != 40 ||
|
|
!hasSuffix(entry.name, ".narinfo"))
|
|
continue;
|
|
paths.insert(parseStorePath(
|
|
storeDir + "/" + entry.name.substr(0, entry.name.size() - 8)
|
|
+ "-" + MissingName));
|
|
}
|
|
|
|
return paths;
|
|
}
|
|
|
|
};
|
|
|
|
void LocalBinaryCacheStore::init()
|
|
{
|
|
createDirs(binaryCacheDir + "/nar");
|
|
createDirs(binaryCacheDir + realisationsPrefix);
|
|
if (writeDebugInfo)
|
|
createDirs(binaryCacheDir + "/debuginfo");
|
|
BinaryCacheStore::init();
|
|
}
|
|
|
|
bool LocalBinaryCacheStore::fileExists(const std::string & path)
|
|
{
|
|
return pathExists(binaryCacheDir + "/" + path);
|
|
}
|
|
|
|
std::set<std::string> LocalBinaryCacheStore::uriSchemes()
|
|
{
|
|
if (getEnv("_NIX_FORCE_HTTP_BINARY_CACHE_STORE") == "1")
|
|
return {};
|
|
else
|
|
return {"file"};
|
|
}
|
|
|
|
static RegisterStoreImplementation<LocalBinaryCacheStore, LocalBinaryCacheStoreConfig> regLocalBinaryCacheStore;
|
|
|
|
}
|