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Merge pull request #8477 from edolstra/tarball-flake-redirects

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Tarball flake improvements
This commit is contained in:
Eelco Dolstra 2023-06-16 18:03:50 +02:00 • committed by GitHub
commit e503eadafc
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15 changed files with 231 additions and 30 deletions
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22
src/libstore/filetransfer.cc
View file

@ -186,9 +186,9 @@ struct curlFileTransfer : public FileTransfer
size_t realSize = size * nmemb;
std::string line((char *) contents, realSize);
printMsg(lvlVomit, "got header for '%s': %s", request.uri, trim(line));
static std::regex statusLine("HTTP/[^ ]+ +[0-9]+(.*)", std::regex::extended | std::regex::icase);
std::smatch match;
if (std::regex_match(line, match, statusLine)) {
if (std::smatch match; std::regex_match(line, match, statusLine)) {
result.etag = "";
result.data.clear();
result.bodySize = 0;
@ -196,9 +196,11 @@ struct curlFileTransfer : public FileTransfer
acceptRanges = false;
encoding = "";
} else {
auto i = line.find(':');
if (i != std::string::npos) {
std::string name = toLower(trim(line.substr(0, i)));
if (name == "etag") {
result.etag = trim(line.substr(i + 1));
/* Hack to work around a GitHub bug: it sends
@ -212,10 +214,22 @@ struct curlFileTransfer : public FileTransfer
debug("shutting down on 200 HTTP response with expected ETag");
return 0;
}
} else if (name == "content-encoding")
}
else if (name == "content-encoding")
encoding = trim(line.substr(i + 1));
else if (name == "accept-ranges" && toLower(trim(line.substr(i + 1))) == "bytes")
acceptRanges = true;
else if (name == "link" || name == "x-amz-meta-link") {
auto value = trim(line.substr(i + 1));
static std::regex linkRegex("<([^>]*)>; rel=\"immutable\"", std::regex::extended | std::regex::icase);
if (std::smatch match; std::regex_match(value, match, linkRegex))
result.immutableUrl = match.str(1);
else
debug("got invalid link header '%s'", value);
}
}
}
return realSize;
@ -345,7 +359,7 @@ struct curlFileTransfer : public FileTransfer
{
auto httpStatus = getHTTPStatus();
char * effectiveUriCStr;
char * effectiveUriCStr = nullptr;
curl_easy_getinfo(req, CURLINFO_EFFECTIVE_URL, &effectiveUriCStr);
if (effectiveUriCStr)
result.effectiveUri = effectiveUriCStr;

4
src/libstore/filetransfer.hh
View file

@ -80,6 +80,10 @@ struct FileTransferResult
std::string effectiveUri;
std::string data;
uint64_t bodySize = 0;
/* An "immutable" URL for this resource (i.e. one whose contents
will never change), as returned by the `Link: <url>;
rel="immutable"` header. */
std::optional<std::string> immutableUrl;
};
class Store;