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git-utils.hh
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git-utils.hh
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#pragma once
#include "filtering-input-accessor.hh"
#include "fs-sink.hh"
namespace nix {
namespace fetchers { struct PublicKey; }
struct GitFileSystemObjectSink : FileSystemObjectSink
{
/**
* Flush builder and return a final Git hash.
*/
virtual Hash sync() = 0;
};
struct GitRepo
{
virtual ~GitRepo()
{ }
static ref<GitRepo> openRepo(const std::filesystem::path & path, bool create = false, bool bare = false);
virtual uint64_t getRevCount(const Hash & rev) = 0;
virtual uint64_t getLastModified(const Hash & rev) = 0;
virtual bool isShallow() = 0;
/* Return the commit hash to which a ref points. */
virtual Hash resolveRef(std::string ref) = 0;
virtual void setRemote(const std::string & name, const std::string & url) = 0;
/**
* Info about a submodule.
*/
struct Submodule
{
CanonPath path;
std::string url;
std::string branch;
};
struct WorkdirInfo
{
bool isDirty = false;
/* The checked out commit, or nullopt if there are no commits
in the repo yet. */
std::optional<Hash> headRev;
/* All files in the working directory that are unchanged,
modified or added, but excluding deleted files. */
std::set<CanonPath> files;
/* The submodules listed in .gitmodules of this workdir. */
std::vector<Submodule> submodules;
};
virtual WorkdirInfo getWorkdirInfo() = 0;
/* Get the ref that HEAD points to. */
virtual std::optional<std::string> getWorkdirRef() = 0;
/**
* Return the submodules of this repo at the indicated revision,
* along with the revision of each submodule.
*/
virtual std::vector<std::tuple<Submodule, Hash>> getSubmodules(const Hash & rev, bool exportIgnore) = 0;
virtual std::string resolveSubmoduleUrl(const std::string & url) = 0;
virtual bool hasObject(const Hash & oid) = 0;
virtual ref<SourceAccessor> getAccessor(const Hash & rev, bool exportIgnore) = 0;
virtual ref<SourceAccessor> getAccessor(const WorkdirInfo & wd, bool exportIgnore, MakeNotAllowedError makeNotAllowedError) = 0;
virtual ref<GitFileSystemObjectSink> getFileSystemObjectSink() = 0;
virtual void fetch(
const std::string & url,
const std::string & refspec,
bool shallow) = 0;
/**
* Verify that commit `rev` is signed by one of the keys in
* `publicKeys`. Throw an error if it isn't.
*/
virtual void verifyCommit(
const Hash & rev,
const std::vector<fetchers::PublicKey> & publicKeys) = 0;
/**
* Given a Git tree hash, compute the hash of its NAR
* serialisation. This is memoised on-disk.
*/
virtual Hash treeHashToNarHash(const Hash & treeHash) = 0;
};
ref<GitRepo> getTarballCache();
}