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-rw-r--r--src/libstore/binary-cache-store.cc112
-rw-r--r--src/libstore/binary-cache-store.hh6
-rw-r--r--src/libstore/daemon.cc2
-rw-r--r--src/libstore/export-import.cc33
-rw-r--r--src/libstore/http-binary-cache-store.cc4
-rw-r--r--src/libstore/local-binary-cache-store.cc30
-rw-r--r--src/libstore/s3-binary-cache-store.cc3
-rw-r--r--src/libutil/archive.hh4
-rw-r--r--src/libutil/serialise.hh13
9 files changed, 120 insertions, 87 deletions
diff --git a/src/libstore/binary-cache-store.cc b/src/libstore/binary-cache-store.cc
index 9f52ddafa..166041b6c 100644
--- a/src/libstore/binary-cache-store.cc
+++ b/src/libstore/binary-cache-store.cc
@@ -57,6 +57,14 @@ void BinaryCacheStore::init()
}
}
+void BinaryCacheStore::upsertFile(const std::string & path,
+ const std::string & data,
+ const std::string & mimeType)
+{
+ StringSource source(data);
+ upsertFile(path, source, mimeType);
+}
+
void BinaryCacheStore::getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback) noexcept
{
@@ -113,13 +121,70 @@ void BinaryCacheStore::writeNarInfo(ref<NarInfo> narInfo)
diskCache->upsertNarInfo(getUri(), hashPart, std::shared_ptr<NarInfo>(narInfo));
}
+AutoCloseFD openFile(const Path & path)
+{
+ auto fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
+ if (!fd)
+ throw SysError("opening file '%1%'", path);
+ return fd;
+}
+
+struct FileSource : FdSource
+{
+ AutoCloseFD fd2;
+
+ FileSource(const Path & path)
+ : fd2(openFile(path))
+ {
+ fd = fd2.get();
+ }
+};
+
void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource,
RepairFlag repair, CheckSigsFlag checkSigs, std::shared_ptr<FSAccessor> accessor)
{
- // FIXME: See if we can use the original source to reduce memory usage.
- auto nar = make_ref<std::string>(narSource.drain());
+ assert(info.narHash && info.narSize);
+
+ if (!repair && isValidPath(info.path)) {
+ // FIXME: copyNAR -> null sink
+ narSource.drain();
+ return;
+ }
+
+ auto [fdTemp, fnTemp] = createTempFile();
+
+ auto now1 = std::chrono::steady_clock::now();
+
+ HashSink fileHashSink(htSHA256);
+
+ {
+ FdSink fileSink(fdTemp.get());
+ TeeSink teeSink(fileSink, fileHashSink);
+ auto compressionSink = makeCompressionSink(compression, teeSink);
+ copyNAR(narSource, *compressionSink);
+ compressionSink->finish();
+ }
+
+ auto now2 = std::chrono::steady_clock::now();
+
+ auto narInfo = make_ref<NarInfo>(info);
+ narInfo->narSize = info.narSize;
+ narInfo->narHash = info.narHash;
+ narInfo->compression = compression;
+ auto [fileHash, fileSize] = fileHashSink.finish();
+ narInfo->fileHash = fileHash;
+ narInfo->fileSize = fileSize;
+ narInfo->url = "nar/" + narInfo->fileHash.to_string(Base32, false) + ".nar"
+ + (compression == "xz" ? ".xz" :
+ compression == "bzip2" ? ".bz2" :
+ compression == "br" ? ".br" :
+ "");
- if (!repair && isValidPath(info.path)) return;
+ auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(now2 - now1).count();
+ printMsg(lvlTalkative, "copying path '%1%' (%2% bytes, compressed %3$.1f%% in %4% ms) to binary cache",
+ printStorePath(narInfo->path), info.narSize,
+ ((1.0 - (double) fileSize / info.narSize) * 100.0),
+ duration);
/* Verify that all references are valid. This may do some .narinfo
reads, but typically they'll already be cached. */
@@ -132,16 +197,7 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource
printStorePath(info.path), printStorePath(ref));
}
- assert(nar->compare(0, narMagic.size(), narMagic) == 0);
-
- auto narInfo = make_ref<NarInfo>(info);
-
- narInfo->narSize = nar->size();
- narInfo->narHash = hashString(htSHA256, *nar);
-
- if (info.narHash && info.narHash != narInfo->narHash)
- throw Error("refusing to copy corrupted path '%1%' to binary cache", printStorePath(info.path));
-
+ #if 0
auto accessor_ = std::dynamic_pointer_cast<RemoteFSAccessor>(accessor);
auto narAccessor = makeNarAccessor(nar);
@@ -166,27 +222,9 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource
upsertFile(std::string(info.path.to_string()) + ".ls", jsonOut.str(), "application/json");
}
+ #endif
- /* Compress the NAR. */
- narInfo->compression = compression;
- auto now1 = std::chrono::steady_clock::now();
- auto narCompressed = compress(compression, *nar, parallelCompression);
- auto now2 = std::chrono::steady_clock::now();
- narInfo->fileHash = hashString(htSHA256, *narCompressed);
- narInfo->fileSize = narCompressed->size();
-
- auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(now2 - now1).count();
- printMsg(lvlTalkative, "copying path '%1%' (%2% bytes, compressed %3$.1f%% in %4% ms) to binary cache",
- printStorePath(narInfo->path), narInfo->narSize,
- ((1.0 - (double) narCompressed->size() / nar->size()) * 100.0),
- duration);
-
- narInfo->url = "nar/" + narInfo->fileHash.to_string(Base32, false) + ".nar"
- + (compression == "xz" ? ".xz" :
- compression == "bzip2" ? ".bz2" :
- compression == "br" ? ".br" :
- "");
-
+ #if 0
/* Optionally maintain an index of DWARF debug info files
consisting of JSON files named 'debuginfo/<build-id>' that
specify the NAR file and member containing the debug info. */
@@ -243,16 +281,18 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, Source & narSource
threadPool.process();
}
}
+ #endif
/* Atomically write the NAR file. */
if (repair || !fileExists(narInfo->url)) {
stats.narWrite++;
- upsertFile(narInfo->url, *narCompressed, "application/x-nix-nar");
+ FileSource source(fnTemp);
+ upsertFile(narInfo->url, source, "application/x-nix-nar");
} else
stats.narWriteAverted++;
- stats.narWriteBytes += nar->size();
- stats.narWriteCompressedBytes += narCompressed->size();
+ stats.narWriteBytes += info.narSize;
+ stats.narWriteCompressedBytes += fileSize;
stats.narWriteCompressionTimeMs += duration;
/* Atomically write the NAR info file.*/
diff --git a/src/libstore/binary-cache-store.hh b/src/libstore/binary-cache-store.hh
index 52ef8aa7a..4f0379533 100644
--- a/src/libstore/binary-cache-store.hh
+++ b/src/libstore/binary-cache-store.hh
@@ -36,9 +36,13 @@ public:
virtual bool fileExists(const std::string & path) = 0;
virtual void upsertFile(const std::string & path,
- const std::string & data,
+ Source & source,
const std::string & mimeType) = 0;
+ void upsertFile(const std::string & path,
+ const std::string & data,
+ const std::string & mimeType);
+
/* Note: subclasses must implement at least one of the two
following getFile() methods. */
diff --git a/src/libstore/daemon.cc b/src/libstore/daemon.cc
index ebc4d0285..f05f4739d 100644
--- a/src/libstore/daemon.cc
+++ b/src/libstore/daemon.cc
@@ -731,7 +731,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
if (GET_PROTOCOL_MINOR(clientVersion) >= 21)
source = std::make_unique<TunnelSource>(from, to);
else {
- TeeSink tee(from);
+ TeeParseSink tee(from);
parseDump(tee, tee.source);
saved = std::move(*tee.source.data);
source = std::make_unique<StringSource>(saved);
diff --git a/src/libstore/export-import.cc b/src/libstore/export-import.cc
index 57b7e9590..cfed8ccd8 100644
--- a/src/libstore/export-import.cc
+++ b/src/libstore/export-import.cc
@@ -7,24 +7,6 @@
namespace nix {
-struct HashAndWriteSink : Sink
-{
- Sink & writeSink;
- HashSink hashSink;
- HashAndWriteSink(Sink & writeSink) : writeSink(writeSink), hashSink(htSHA256)
- {
- }
- virtual void operator () (const unsigned char * data, size_t len)
- {
- writeSink(data, len);
- hashSink(data, len);
- }
- Hash currentHash()
- {
- return hashSink.currentHash().first;
- }
-};
-
void Store::exportPaths(const StorePathSet & paths, Sink & sink)
{
auto sorted = topoSortPaths(paths);
@@ -47,23 +29,24 @@ void Store::exportPath(const StorePath & path, Sink & sink)
{
auto info = queryPathInfo(path);
- HashAndWriteSink hashAndWriteSink(sink);
+ HashSink hashSink(htSHA256);
+ TeeSink teeSink(sink, hashSink);
- narFromPath(path, hashAndWriteSink);
+ narFromPath(path, teeSink);
/* Refuse to export paths that have changed. This prevents
filesystem corruption from spreading to other machines.
Don't complain if the stored hash is zero (unknown). */
- Hash hash = hashAndWriteSink.currentHash();
+ Hash hash = hashSink.currentHash().first;
if (hash != info->narHash && info->narHash != Hash(*info->narHash.type))
throw Error("hash of path '%s' has changed from '%s' to '%s'!",
printStorePath(path), info->narHash.to_string(Base32, true), hash.to_string(Base32, true));
- hashAndWriteSink
+ teeSink
<< exportMagic
<< printStorePath(path);
- writeStorePaths(*this, hashAndWriteSink, info->references);
- hashAndWriteSink
+ writeStorePaths(*this, teeSink, info->references);
+ teeSink
<< (info->deriver ? printStorePath(*info->deriver) : "")
<< 0;
}
@@ -77,7 +60,7 @@ StorePaths Store::importPaths(Source & source, std::shared_ptr<FSAccessor> acces
if (n != 1) throw Error("input doesn't look like something created by 'nix-store --export'");
/* Extract the NAR from the source. */
- TeeSink tee(source);
+ TeeParseSink tee(source);
parseDump(tee, tee.source);
uint32_t magic = readInt(source);
diff --git a/src/libstore/http-binary-cache-store.cc b/src/libstore/http-binary-cache-store.cc
index 451a64785..d9a292368 100644
--- a/src/libstore/http-binary-cache-store.cc
+++ b/src/libstore/http-binary-cache-store.cc
@@ -100,11 +100,11 @@ protected:
}
void upsertFile(const std::string & path,
- const std::string & data,
+ Source & source,
const std::string & mimeType) override
{
auto req = FileTransferRequest(cacheUri + "/" + path);
- req.data = std::make_shared<string>(data); // FIXME: inefficient
+ req.data = std::make_shared<string>(source.drain());
req.mimeType = mimeType;
try {
getFileTransfer()->upload(req);
diff --git a/src/libstore/local-binary-cache-store.cc b/src/libstore/local-binary-cache-store.cc
index 215c016f5..3d531d3a7 100644
--- a/src/libstore/local-binary-cache-store.cc
+++ b/src/libstore/local-binary-cache-store.cc
@@ -31,8 +31,17 @@ protected:
bool fileExists(const std::string & path) override;
void upsertFile(const std::string & path,
- const std::string & data,
- const std::string & mimeType) override;
+ Source & source,
+ const std::string & mimeType)
+ {
+ auto path2 = binaryCacheDir + "/" + path;
+ Path tmp = path2 + ".tmp." + std::to_string(getpid());
+ AutoDelete del(tmp, false);
+ 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
{
@@ -70,28 +79,11 @@ void LocalBinaryCacheStore::init()
BinaryCacheStore::init();
}
-static void atomicWrite(const Path & path, const std::string & s)
-{
- Path tmp = path + ".tmp." + std::to_string(getpid());
- AutoDelete del(tmp, false);
- writeFile(tmp, s);
- if (rename(tmp.c_str(), path.c_str()))
- throw SysError("renaming '%1%' to '%2%'", tmp, path);
- del.cancel();
-}
-
bool LocalBinaryCacheStore::fileExists(const std::string & path)
{
return pathExists(binaryCacheDir + "/" + path);
}
-void LocalBinaryCacheStore::upsertFile(const std::string & path,
- const std::string & data,
- const std::string & mimeType)
-{
- atomicWrite(binaryCacheDir + "/" + path, data);
-}
-
static RegisterStoreImplementation regStore([](
const std::string & uri, const Store::Params & params)
-> std::shared_ptr<Store>
diff --git a/src/libstore/s3-binary-cache-store.cc b/src/libstore/s3-binary-cache-store.cc
index f85563766..57f16101d 100644
--- a/src/libstore/s3-binary-cache-store.cc
+++ b/src/libstore/s3-binary-cache-store.cc
@@ -355,9 +355,10 @@ struct S3BinaryCacheStoreImpl : public S3BinaryCacheStore
stats.put++;
}
- void upsertFile(const std::string & path, const std::string & data,
+ void upsertFile(const std::string & path, Source & source,
const std::string & mimeType) override
{
+ auto data = source.drain();
if (narinfoCompression != "" && hasSuffix(path, ".narinfo"))
uploadFile(path, *compress(narinfoCompression, data), mimeType, narinfoCompression);
else if (lsCompression != "" && hasSuffix(path, ".ls"))
diff --git a/src/libutil/archive.hh b/src/libutil/archive.hh
index 768fe2536..795e9ce02 100644
--- a/src/libutil/archive.hh
+++ b/src/libutil/archive.hh
@@ -63,11 +63,11 @@ struct ParseSink
virtual void createSymlink(const Path & path, const string & target) { };
};
-struct TeeSink : ParseSink
+struct TeeParseSink : ParseSink
{
TeeSource source;
- TeeSink(Source & source) : source(source) { }
+ TeeParseSink(Source & source) : source(source) { }
};
void parseDump(ParseSink & sink, Source & source);
diff --git a/src/libutil/serialise.hh b/src/libutil/serialise.hh
index a04118512..bd651fb7d 100644
--- a/src/libutil/serialise.hh
+++ b/src/libutil/serialise.hh
@@ -166,6 +166,19 @@ struct StringSource : Source
};
+/* A sink that writes all incoming data to two other sinks. */
+struct TeeSink : Sink
+{
+ Sink & sink1, & sink2;
+ TeeSink(Sink & sink1, Sink & sink2) : sink1(sink1), sink2(sink2) { }
+ virtual void operator () (const unsigned char * data, size_t len)
+ {
+ sink1(data, len);
+ sink2(data, len);
+ }
+};
+
+
/* Adapter class of a Source that saves all data read to `s'. */
struct TeeSource : Source
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 23:09:11 +0000