101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
#include "archive.hh"
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#include "posix-source-accessor.hh"
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#include "store-api.hh"
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#include "local-fs-store.hh"
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#include "globals.hh"
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#include "compression.hh"
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#include "derivations.hh"
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namespace nix {
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LocalFSStore::LocalFSStore(const Params & params)
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: Store(params)
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{
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}
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struct LocalStoreAccessor : PosixSourceAccessor
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{
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ref<LocalFSStore> store;
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bool requireValidPath;
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LocalStoreAccessor(ref<LocalFSStore> store, bool requireValidPath)
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: store(store)
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, requireValidPath(requireValidPath)
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{ }
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CanonPath toRealPath(const CanonPath & path)
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{
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auto [storePath, rest] = store->toStorePath(path.abs());
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if (requireValidPath && !store->isValidPath(storePath))
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throw InvalidPath("path '%1%' is not a valid store path", store->printStorePath(storePath));
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return CanonPath(store->getRealStoreDir()) / storePath.to_string() / CanonPath(rest);
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}
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std::optional<Stat> maybeLstat(const CanonPath & path) override
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{
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return PosixSourceAccessor::maybeLstat(toRealPath(path));
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}
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DirEntries readDirectory(const CanonPath & path) override
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{
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return PosixSourceAccessor::readDirectory(toRealPath(path));
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}
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void readFile(
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const CanonPath & path,
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Sink & sink,
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std::function<void(uint64_t)> sizeCallback) override
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{
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return PosixSourceAccessor::readFile(toRealPath(path), sink, sizeCallback);
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}
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std::string readLink(const CanonPath & path) override
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{
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return PosixSourceAccessor::readLink(toRealPath(path));
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}
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};
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ref<SourceAccessor> LocalFSStore::getFSAccessor(bool requireValidPath)
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{
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return make_ref<LocalStoreAccessor>(ref<LocalFSStore>(
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std::dynamic_pointer_cast<LocalFSStore>(shared_from_this())),
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requireValidPath);
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}
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void LocalFSStore::narFromPath(const StorePath & path, Sink & sink)
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{
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if (!isValidPath(path))
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throw Error("path '%s' is not valid", printStorePath(path));
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dumpPath(getRealStoreDir() + std::string(printStorePath(path), storeDir.size()), sink);
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}
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const std::string LocalFSStore::drvsLogDir = "drvs";
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std::optional<std::string> LocalFSStore::getBuildLogExact(const StorePath & path)
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{
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auto baseName = path.to_string();
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for (int j = 0; j < 2; j++) {
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Path logPath =
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j == 0
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? fmt("%s/%s/%s/%s", logDir, drvsLogDir, baseName.substr(0, 2), baseName.substr(2))
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: fmt("%s/%s/%s", logDir, drvsLogDir, baseName);
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Path logBz2Path = logPath + ".bz2";
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if (pathExists(logPath))
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return readFile(logPath);
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else if (pathExists(logBz2Path)) {
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try {
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return decompress("bzip2", readFile(logBz2Path));
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} catch (Error &) { }
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}
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}
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return std::nullopt;
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}
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}
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