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Took ref and rev out of FlakeRef

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This commit is contained in:
Nick Van den Broeck 2019-04-06 20:45:35 +02:00
parent 3ec0c82fab
commit f39670c631
3 changed files with 41 additions and 87 deletions
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31
src/libexpr/primops/flake.cc
View file

@ -201,10 +201,8 @@ static FlakeRef lookupFlake(EvalState & state, const FlakeRef & flakeRef,
auto newRef = FlakeRef(i->second.ref);
if (!newRef.isDirect())
throw Error("found indirect flake URI '%s' in the flake registry", i->second.ref.to_string());
if (refData->ref)
newRef.setRef(*refData->ref);
if (refData->rev)
newRef.setRev(*refData->rev);
if (flakeRef.ref) newRef.setRef(*flakeRef.ref);
if (flakeRef.rev) newRef.setRev(*flakeRef.rev);
return newRef;
}
}
@ -220,13 +218,13 @@ struct FlakeSourceInfo
std::optional<uint64_t> revCount;
};
static FlakeSourceInfo fetchFlake(EvalState & state, const FlakeRef & flakeRef, bool impureIsAllowed = false)
static FlakeSourceInfo fetchFlake(EvalState & state, const FlakeRef flakeRef, bool impureIsAllowed = false)
{
FlakeRef directFlakeRef = lookupFlake(state, flakeRef, state.getFlakeRegistries());
FlakeRef fRef = lookupFlake(state, flakeRef, state.getFlakeRegistries());
if (auto refData = std::get_if<FlakeRef::IsGitHub>(&directFlakeRef.data)) {
if (evalSettings.pureEval && !impureIsAllowed && !directFlakeRef.isImmutable())
throw Error("requested to fetch FlakeRef '%s' purely, which is mutable", directFlakeRef.to_string());
if (auto refData = std::get_if<FlakeRef::IsGitHub>(&fRef.data)) {
if (evalSettings.pureEval && !impureIsAllowed && !fRef.isImmutable())
throw Error("requested to fetch FlakeRef '%s' purely, which is mutable", fRef.to_string());
// FIXME: use regular /archive URLs instead? api.github.com
// might have stricter rate limits.
@ -235,14 +233,11 @@ static FlakeSourceInfo fetchFlake(EvalState & state, const FlakeRef & flakeRef,
auto url = fmt("https://api.github.com/repos/%s/%s/tarball/%s",
refData->owner, refData->repo,
refData->rev
? refData->rev->to_string(Base16, false)
: refData->ref
? *refData->ref
: "master");
fRef.rev ? fRef.rev->to_string(Base16, false)
: fRef.ref ? *fRef.ref : "master");
auto result = getDownloader()->downloadCached(state.store, url, true, "source",
Hash(), nullptr, refData->rev ? 1000000000 : settings.tarballTtl);
Hash(), nullptr, fRef.rev ? 1000000000 : settings.tarballTtl);
if (!result.etag)
throw Error("did not receive an ETag header from '%s'", url);
@ -257,9 +252,9 @@ static FlakeSourceInfo fetchFlake(EvalState & state, const FlakeRef & flakeRef,
return info;
}
else if (auto refData = std::get_if<FlakeRef::IsGit>(&directFlakeRef.data)) {
auto gitInfo = exportGit(state.store, refData->uri, refData->ref,
refData->rev ? refData->rev->to_string(Base16, false) : "", "source");
else if (auto refData = std::get_if<FlakeRef::IsGit>(&fRef.data)) {
auto gitInfo = exportGit(state.store, refData->uri, fRef.ref,
fRef.rev ? fRef.rev->to_string(Base16, false) : "", "source");
FlakeSourceInfo info;
info.storePath = gitInfo.storePath;
info.rev = Hash(gitInfo.rev, htSHA1);

69
src/libexpr/primops/flakeref.cc
View file

@ -58,11 +58,11 @@ FlakeRef::FlakeRef(const std::string & uri, bool allowRelative)
IsFlakeId d;
d.id = match[1];
if (match[2].matched)
d.rev = Hash(match[2], htSHA1);
rev = Hash(match[2], htSHA1);
else if (match[3].matched) {
d.ref = match[3];
ref = match[3];
if (match[4].matched)
d.rev = Hash(match[4], htSHA1);
rev = Hash(match[4], htSHA1);
}
data = d;
}
@ -72,9 +72,9 @@ FlakeRef::FlakeRef(const std::string & uri, bool allowRelative)
d.owner = match[1];
d.repo = match[2];
if (match[3].matched)
d.rev = Hash(match[3], htSHA1);
rev = Hash(match[3], htSHA1);
else if (match[4].matched) {
d.ref = match[4];
ref = match[4];
}
data = d;
}
@ -92,16 +92,16 @@ FlakeRef::FlakeRef(const std::string & uri, bool allowRelative)
if (name == "rev") {
if (!std::regex_match(value, revRegex))
throw Error("invalid Git revision '%s'", value);
d.rev = Hash(value, htSHA1);
rev = Hash(value, htSHA1);
} else if (name == "ref") {
if (!std::regex_match(value, refRegex2))
throw Error("invalid Git ref '%s'", value);
d.ref = value;
ref = value;
} else
// FIXME: should probably pass through unknown parameters
throw Error("invalid Git flake reference parameter '%s', in '%s'", name, uri);
}
if (d.rev && !d.ref)
if (rev && !ref)
throw Error("flake URI '%s' lacks a Git ref", uri);
data = d;
}
@ -118,27 +118,18 @@ FlakeRef::FlakeRef(const std::string & uri, bool allowRelative)
std::string FlakeRef::to_string() const
{
if (auto refData = std::get_if<FlakeRef::IsFlakeId>(&data)) {
return
"flake:" + refData->id +
(refData->ref ? "/" + *refData->ref : "") +
(refData->rev ? "/" + refData->rev->to_string(Base16, false) : "");
}
std::string string;
if (auto refData = std::get_if<FlakeRef::IsFlakeId>(&data))
string = "flake:" + refData->id;
else if (auto refData = std::get_if<FlakeRef::IsGitHub>(&data)) {
assert(!refData->ref || !refData->rev);
return
"github:" + refData->owner + "/" + refData->repo +
(refData->ref ? "/" + *refData->ref : "") +
(refData->rev ? "/" + refData->rev->to_string(Base16, false) : "");
assert(!ref || !rev);
string = "github:" + refData->owner + "/" + refData->repo;
}
else if (auto refData = std::get_if<FlakeRef::IsGit>(&data)) {
assert(refData->ref || !refData->rev);
return
refData->uri +
(refData->ref ? "?ref=" + *refData->ref : "") +
(refData->rev ? "&rev=" + refData->rev->to_string(Base16, false) : "");
assert(ref || !rev);
string = refData->uri;
}
else if (auto refData = std::get_if<FlakeRef::IsPath>(&data)) {
@ -146,38 +137,22 @@ std::string FlakeRef::to_string() const
}
else abort();
string += (ref ? "/" + *ref : "") +
(rev ? "/" + rev->to_string(Base16, false) : "");
return string;
}
bool FlakeRef::isImmutable() const
{
if (auto refData = std::get_if<FlakeRef::IsFlakeId>(&data))
return (bool) refData->rev;
else if (auto refData = std::get_if<FlakeRef::IsGitHub>(&data))
return (bool) refData->rev;
else if (auto refData = std::get_if<FlakeRef::IsGit>(&data))
return (bool) refData->rev;
else if (std::get_if<FlakeRef::IsPath>(&data))
return false;
else abort();
return (bool) rev;
}
FlakeRef FlakeRef::baseRef() const // Removes the ref and rev from a FlakeRef.
{
FlakeRef result(*this);
if (auto refData = std::get_if<FlakeRef::IsGitHub>(&result.data)) {
refData->ref = std::nullopt;
refData->rev = std::nullopt;
} else if (auto refData = std::get_if<FlakeRef::IsGit>(&result.data)) {
refData->ref = std::nullopt;
refData->rev = std::nullopt;
} else if (auto refData = std::get_if<FlakeRef::IsGit>(&result.data)) {
refData->ref = std::nullopt;
refData->rev = std::nullopt;
}
result.ref = std::nullopt;
result.rev = std::nullopt;
return result;
}
}

28
src/libexpr/primops/flakeref.hh
View file

@ -101,25 +101,23 @@ typedef std::string FlakeId;
struct FlakeRef
{
std::optional<std::string> ref;
std::optional<Hash> rev;
struct IsFlakeId
{
FlakeId id;
std::optional<std::string> ref;
std::optional<Hash> rev;
};
struct IsGitHub
{
std::string owner, repo;
std::optional<std::string> ref;
std::optional<Hash> rev;
};
// Git, Tarball
struct IsGit
{
std::string uri;
std::optional<std::string> ref;
std::optional<Hash> rev;
};
struct IsPath
@ -161,22 +159,8 @@ struct FlakeRef
FlakeRef baseRef() const;
void setRef(std::optional<std::string> ref) {
if (auto refData = std::get_if<IsGit>(&data))
refData->ref = ref;
else if (auto refData = std::get_if<IsGitHub>(&data))
refData->ref = ref;
else if (auto refData = std::get_if<IsFlakeId>(&data))
refData->ref = ref;
}
void setRef(std::optional<std::string> ref) { ref = ref; }
void setRev(std::optional<Hash> rev) {
if (auto refData = std::get_if<IsGit>(&data))
refData->rev = rev;
else if (auto refData = std::get_if<IsGitHub>(&data))
refData->rev = rev;
else if (auto refData = std::get_if<IsFlakeId>(&data))
refData->rev = rev;
}
void setRev(std::optional<Hash> rev) { rev = rev; }
};
}