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Merge pull request #3660 from Kloenk/selfhost-gitlab

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add support for selfhosted gitlab/github
This commit is contained in:
Eelco Dolstra 2020-06-04 14:59:33 +02:00 committed by GitHub
commit dc305500c3
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1 changed files with 41 additions and 15 deletions
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56
src/libfetchers/github.cc
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@ -8,6 +8,20 @@
namespace nix::fetchers {
// get the default url attribute
std::string getDefaultUrl(const Attrs & attrs, const std::string & url) {
auto s = maybeGetStrAttr(attrs, "url");
if (!s)
return url;
return *s;
}
// A github or gitlab url
const static std::string urlRegexS = "[a-zA-Z0-9.]*"; // FIXME: check
std::regex urlRegex(urlRegexS, std::regex::ECMAScript);
struct GitArchiveInputScheme : InputScheme
{
virtual std::string type() = 0;
@ -20,6 +34,7 @@ struct GitArchiveInputScheme : InputScheme
std::optional<Hash> rev;
std::optional<std::string> ref;
std::optional<std::string> host_url;
if (path.size() == 2) {
} else if (path.size() == 3) {
@ -45,6 +60,11 @@ struct GitArchiveInputScheme : InputScheme
throw BadURL("URL '%s' contains multiple branch/tag names", url.url);
ref = value;
}
else if (name == "url") {
if (!std::regex_match(value, urlRegex))
throw BadURL("URL '%s' contains an invalid instance url", url.url);
host_url = value;
}
// FIXME: barf on unsupported attributes
}
@ -57,6 +77,7 @@ struct GitArchiveInputScheme : InputScheme
input.attrs.insert_or_assign("repo", path[1]);
if (rev) input.attrs.insert_or_assign("rev", rev->gitRev());
if (ref) input.attrs.insert_or_assign("ref", *ref);
if (host_url) input.attrs.insert_or_assign("url", *host_url);
return input;
}
@ -171,8 +192,9 @@ struct GitHubInputScheme : GitArchiveInputScheme
Hash getRevFromRef(nix::ref<Store> store, const Input & input) const override
{
auto url = fmt("https://api.github.com/repos/%s/%s/commits/%s",
getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"), *input.getRef());
auto host_url = getDefaultUrl(input.attrs, "github.com");
auto url = fmt("https://api.%s/repos/%s/%s/commits/%s", // FIXME: check
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"), *input.getRef());
auto json = nlohmann::json::parse(
readFile(
store->toRealPath(
@ -186,9 +208,9 @@ struct GitHubInputScheme : GitArchiveInputScheme
{
// FIXME: use regular /archive URLs instead? api.github.com
// might have stricter rate limits.
auto url = fmt("https://api.github.com/repos/%s/%s/tarball/%s",
getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"),
auto host_url = getDefaultUrl(input.attrs, "github.com");
auto url = fmt("https://api.%s/repos/%s/%s/tarball/%s", // FIXME: check if this is correct for self hosted instances
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"),
input.getRev()->to_string(Base16, false));
std::string accessToken = settings.githubAccessToken.get();
@ -200,8 +222,9 @@ struct GitHubInputScheme : GitArchiveInputScheme
void clone(const Input & input, const Path & destDir) override
{
Input::fromURL(fmt("git+ssh://git@github.com/%s/%s.git",
getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo")))
auto host_url = getDefaultUrl(input.attrs, "github.com");
Input::fromURL(fmt("git+ssh://git@%s/%s/%s.git",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo")))
.applyOverrides(input.getRef().value_or("master"), input.getRev())
.clone(destDir);
}
@ -213,8 +236,9 @@ struct GitLabInputScheme : GitArchiveInputScheme
Hash getRevFromRef(nix::ref<Store> store, const Input & input) const override
{
auto url = fmt("https://gitlab.com/api/v4/projects/%s%%2F%s/repository/branches/%s",
getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"), *input.getRef());
auto host_url = getDefaultUrl(input.attrs, "gitlab.com");
auto url = fmt("https://%s/api/v4/projects/%s%%2F%s/repository/branches/%s",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"), *input.getRef());
auto json = nlohmann::json::parse(
readFile(
store->toRealPath(
@ -226,10 +250,10 @@ struct GitLabInputScheme : GitArchiveInputScheme
std::string getDownloadUrl(const Input & input) const override
{
// FIXME: This endpoint has a rate limit threshold of 5 requests per minute.
auto url = fmt("https://gitlab.com/api/v4/projects/%s%%2F%s/repository/archive.tar.gz?sha=%s",
getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"),
// FIXME: This endpoint has a rate limit threshold of 5 requests per minute
auto host_url = getDefaultUrl(input.attrs, "gitlab.com");
auto url = fmt("https://%s/api/v4/projects/%s%%2F%s/repository/archive.tar.gz?sha=%s",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo"),
input.getRev()->to_string(Base16, false));
/* # FIXME: add privat token auth (`curl --header "PRIVATE-TOKEN: <your_access_token>"`)
@ -242,8 +266,10 @@ struct GitLabInputScheme : GitArchiveInputScheme
void clone(const Input & input, const Path & destDir) override
{
Input::fromURL(fmt("git+ssh://git@gitlab.com/%s/%s.git",
getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo")))
auto host_url = getDefaultUrl(input.attrs, "gitlab.com");
// FIXME: get username somewhere
Input::fromURL(fmt("git+ssh://git@%s/%s/%s.git",
host_url, getStrAttr(input.attrs, "owner"), getStrAttr(input.attrs, "repo")))
.applyOverrides(input.getRef().value_or("master"), input.getRev())
.clone(destDir);
}