forked from lix-project/lix
120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
#include "binary-cache-store.hh"
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#include "globals.hh"
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#include "nar-info-disk-cache.hh"
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#include <atomic>
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namespace nix {
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struct LocalBinaryCacheStoreConfig : virtual BinaryCacheStoreConfig
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{
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using BinaryCacheStoreConfig::BinaryCacheStoreConfig;
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const std::string name() override { return "Local Binary Cache Store"; }
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};
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class LocalBinaryCacheStore : public virtual LocalBinaryCacheStoreConfig, public virtual BinaryCacheStore
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{
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private:
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Path binaryCacheDir;
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public:
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LocalBinaryCacheStore(
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const std::string scheme,
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const Path & binaryCacheDir,
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const Params & params)
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: StoreConfig(params)
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, BinaryCacheStoreConfig(params)
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, LocalBinaryCacheStoreConfig(params)
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, Store(params)
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, BinaryCacheStore(params)
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, binaryCacheDir(binaryCacheDir)
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{
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}
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void init() override;
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std::string getUri() override
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{
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return "file://" + binaryCacheDir;
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}
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static std::set<std::string> uriSchemes();
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protected:
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bool fileExists(const std::string & path) override;
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void upsertFile(const std::string & path,
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std::shared_ptr<std::basic_iostream<char>> istream,
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const std::string & mimeType) override
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{
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auto path2 = binaryCacheDir + "/" + path;
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static std::atomic<int> counter{0};
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Path tmp = fmt("%s.tmp.%d.%d", path2, getpid(), ++counter);
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AutoDelete del(tmp, false);
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StreamToSourceAdapter source(istream);
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writeFile(tmp, source);
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if (rename(tmp.c_str(), path2.c_str()))
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throw SysError("renaming '%1%' to '%2%'", tmp, path2);
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del.cancel();
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}
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void getFile(const std::string & path, Sink & sink) override
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{
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try {
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readFile(binaryCacheDir + "/" + path, sink);
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} catch (SysError & e) {
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if (e.errNo == ENOENT)
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throw NoSuchBinaryCacheFile("file '%s' does not exist in binary cache", path);
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throw;
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}
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}
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StorePathSet queryAllValidPaths() override
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{
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StorePathSet paths;
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for (auto & entry : readDirectory(binaryCacheDir)) {
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if (entry.name.size() != 40 ||
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!hasSuffix(entry.name, ".narinfo"))
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continue;
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paths.insert(parseStorePath(
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storeDir + "/" + entry.name.substr(0, entry.name.size() - 8)
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+ "-" + MissingName));
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}
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return paths;
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}
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};
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void LocalBinaryCacheStore::init()
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{
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createDirs(binaryCacheDir + "/nar");
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createDirs(binaryCacheDir + "/" + realisationsPrefix);
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if (writeDebugInfo)
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createDirs(binaryCacheDir + "/debuginfo");
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createDirs(binaryCacheDir + "/log");
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BinaryCacheStore::init();
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}
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bool LocalBinaryCacheStore::fileExists(const std::string & path)
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{
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return pathExists(binaryCacheDir + "/" + path);
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}
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std::set<std::string> LocalBinaryCacheStore::uriSchemes()
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{
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if (getEnv("_NIX_FORCE_HTTP") == "1")
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return {};
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else
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return {"file"};
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}
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static RegisterStoreImplementation<LocalBinaryCacheStore, LocalBinaryCacheStoreConfig> regLocalBinaryCacheStore;
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}
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