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Merge pull request #13052 from rhendric/rhendric/increase-429-delay

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libstore: increase retry delay for 429
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Robert Hensing 2025-04-21 00:31:15 +02:00 • committed by GitHub
commit 15fa95f925
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2 changed files with 13 additions and 4 deletions
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13
src/libstore/filetransfer.cc
View file

@ -33,6 +33,9 @@ using namespace std::string_literals;
namespace nix {
const unsigned int RETRY_TIME_MS_DEFAULT = 250;
const unsigned int RETRY_TIME_MS_TOO_MANY_REQUESTS = 60000;
FileTransferSettings fileTransferSettings;
static GlobalConfig::Register rFileTransferSettings(&fileTransferSettings);
@ -399,6 +402,8 @@ struct curlFileTransfer : public FileTransfer
{
auto finishTime = std::chrono::steady_clock::now();
auto retryTimeMs = request.baseRetryTimeMs;
auto httpStatus = getHTTPStatus();
debug("finished %s of '%s'; curl status = %d, HTTP status = %d, body = %d bytes, duration = %.2f s",
@ -449,10 +454,12 @@ struct curlFileTransfer : public FileTransfer
} else if (httpStatus == 401 || httpStatus == 403 || httpStatus == 407) {
// Don't retry on authentication/authorization failures
err = Forbidden;
} else if (httpStatus >= 400 && httpStatus < 500 && httpStatus != 408 && httpStatus != 429) {
} else if (httpStatus == 429) {
// 429 means too many requests, so we retry (with a substantially longer delay)
retryTimeMs = RETRY_TIME_MS_TOO_MANY_REQUESTS;
} else if (httpStatus >= 400 && httpStatus < 500 && httpStatus != 408) {
// Most 4xx errors are client errors and are probably not worth retrying:
// * 408 means the server timed out waiting for us, so we try again
// * 429 means too many requests, so we retry (with a delay)
err = Misc;
} else if (httpStatus == 501 || httpStatus == 505 || httpStatus == 511) {
// Let's treat most 5xx (server) errors as transient, except for a handful:
@ -518,7 +525,7 @@ struct curlFileTransfer : public FileTransfer
|| writtenToSink == 0
|| (acceptRanges && encoding.empty())))
{
int ms = request.baseRetryTimeMs * std::pow(2.0f, attempt - 1 + std::uniform_real_distribution<>(0.0, 0.5)(fileTransfer.mt19937));
int ms = retryTimeMs * std::pow(2.0f, attempt - 1 + std::uniform_real_distribution<>(0.0, 0.5)(fileTransfer.mt19937));
if (writtenToSink)
warn("%s; retrying from offset %d in %d ms", exc.what(), writtenToSink, ms);
else

4
src/libstore/include/nix/store/filetransfer.hh
View file

@ -58,6 +58,8 @@ struct FileTransferSettings : Config
extern FileTransferSettings fileTransferSettings;
extern const unsigned int RETRY_TIME_MS_DEFAULT;
struct FileTransferRequest
{
std::string uri;
@ -67,7 +69,7 @@ struct FileTransferRequest
bool head = false;
bool post = false;
size_t tries = fileTransferSettings.tries;
unsigned int baseRetryTimeMs = 250;
unsigned int baseRetryTimeMs = RETRY_TIME_MS_DEFAULT;
ActivityId parentAct;
bool decompress = true;
std::optional<std::string> data;