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Fix build with latest Lix

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Since ca1dc3f70bf98e2424b7b2666ee2180675b67451, the NAR parser has moved
the preallocate & receive steps into the file handle class to remove the
assumption that only one file can be handled at a time.
This commit is contained in:
Maximilian Bosch 2024-09-26 09:31:43 +02:00
parent 9e32534256
commit 8c94cfdc1a
Signed by: ma27
SSH key fingerprint: SHA256:d7dmwHmpai66L6KIXA+wxzVbkPq0nGLrcHK3ZNroqZY
2 changed files with 35 additions and 32 deletions
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2
.envrc
View file

@ -1 +1 @@
use flake
use flake .#clang

65
src/hydra-queue-runner/nar-extractor.cc
View file

@ -7,8 +7,38 @@
using namespace nix;
struct Extractor : ParseSink
struct Extractor : NARParseVisitor
{
class MyFileHandle : public FileHandle
{
NarMemberData * memberData;
uint64_t expectedSize;
std::unique_ptr<HashSink> hashSink;
public:
MyFileHandle(NarMemberData * memberData, uint64_t size) : memberData(memberData)
{
expectedSize = size;
hashSink = std::make_unique<HashSink>(HashType::SHA256);
}
void receiveContents(std::string_view data) override
{
*memberData->fileSize += data.size();
(*hashSink)(data);
if (memberData->contents) {
memberData->contents->append(data);
}
assert(memberData->fileSize <= expectedSize);
if (memberData->fileSize == expectedSize) {
auto [hash, len] = hashSink->finish();
assert(memberData->fileSize == len);
memberData->sha256 = hash;
hashSink.reset();
}
}
};
std::unordered_set<Path> filesToKeep {
"/nix-support/hydra-build-products",
"/nix-support/hydra-release-name",
@ -16,7 +46,6 @@ struct Extractor : ParseSink
};
NarMemberDatas & members;
NarMemberData * curMember = nullptr;
Path prefix;
Extractor(NarMemberDatas & members, Path prefix)
@ -28,41 +57,15 @@ struct Extractor : ParseSink
members.insert_or_assign(prefix + path, NarMemberData { .type = FSAccessor::Type::tDirectory });
}
void createRegularFile(const Path & path) override
std::unique_ptr<FileHandle> createRegularFile(const Path & path, uint64_t size, bool executable) override
{
curMember = &members.insert_or_assign(prefix + path, NarMemberData {
auto memberData = &members.insert_or_assign(prefix + path, NarMemberData {
.type = FSAccessor::Type::tRegular,
.fileSize = 0,
.contents = filesToKeep.count(path) ? std::optional("") : std::nullopt,
}).first->second;
}
std::optional<uint64_t> expectedSize;
std::unique_ptr<HashSink> hashSink;
void preallocateContents(uint64_t size) override
{
expectedSize = size;
hashSink = std::make_unique<HashSink>(HashType::SHA256);
}
void receiveContents(std::string_view data) override
{
assert(expectedSize);
assert(curMember);
assert(hashSink);
*curMember->fileSize += data.size();
(*hashSink)(data);
if (curMember->contents) {
curMember->contents->append(data);
}
assert(curMember->fileSize <= expectedSize);
if (curMember->fileSize == expectedSize) {
auto [hash, len] = hashSink->finish();
assert(curMember->fileSize == len);
curMember->sha256 = hash;
hashSink.reset();
}
return std::unique_ptr<MyFileHandle>(new MyFileHandle{memberData, size});
}
void createSymlink(const Path & path, const std::string & target) override