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Improve progress indicator

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This commit is contained in:
Eelco Dolstra 2017-05-16 16:09:57 +02:00
parent e80257f122
commit b01d62285c
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GPG key ID: 8170B4726D7198DE
26 changed files with 339 additions and 168 deletions
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38
src/libstore/download.cc
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@ -63,6 +63,7 @@ struct CurlDownloader : public Downloader
CurlDownloader & downloader;
DownloadRequest request;
DownloadResult result;
Activity act;
bool done = false; // whether either the success or failure function has been called
std::function<void(const DownloadResult &)> success;
std::function<void(std::exception_ptr exc)> failure;
@ -70,10 +71,6 @@ struct CurlDownloader : public Downloader
bool active = false; // whether the handle has been added to the multi object
std::string status;
bool showProgress = false;
double prevProgressTime{0}, startTime{0};
unsigned int moveBack{1};
unsigned int attempt = 0;
/* Don't start this download until the specified time point
@ -87,12 +84,10 @@ struct CurlDownloader : public Downloader
DownloadItem(CurlDownloader & downloader, const DownloadRequest & request)
: downloader(downloader), request(request)
{
showProgress =
request.showProgress == DownloadRequest::yes ||
(request.showProgress == DownloadRequest::automatic && isatty(STDERR_FILENO));
if (!request.expectedETag.empty())
requestHeaders = curl_slist_append(requestHeaders, ("If-None-Match: " + request.expectedETag).c_str());
logger->event(evDownloadCreated, act, request.uri);
}
~DownloadItem()
@ -109,6 +104,7 @@ struct CurlDownloader : public Downloader
} catch (...) {
ignoreException();
}
logger->event(evDownloadDestroyed, act);
}
template<class T>
@ -171,19 +167,7 @@ struct CurlDownloader : public Downloader
int progressCallback(double dltotal, double dlnow)
{
if (showProgress) {
double now = getTime();
if (prevProgressTime <= now - 1) {
string s = (format(" [%1$.0f/%2$.0f KiB, %3$.1f KiB/s]")
% (dlnow / 1024.0)
% (dltotal / 1024.0)
% (now == startTime ? 0 : dlnow / 1024.0 / (now - startTime))).str();
std::cerr << "\e[" << moveBack << "D" << s;
moveBack = s.size();
std::cerr.flush();
prevProgressTime = now;
}
}
logger->event(evDownloadProgress, act, dltotal, dlnow);
return _isInterrupted;
}
@ -201,13 +185,6 @@ struct CurlDownloader : public Downloader
void init()
{
// FIXME: handle parallel downloads.
if (showProgress) {
std::cerr << (format("downloading ‘%1%’... ") % request.uri);
std::cerr.flush();
startTime = getTime();
}
if (!req) req = curl_easy_init();
curl_easy_reset(req);
@ -263,10 +240,6 @@ struct CurlDownloader : public Downloader
void finish(CURLcode code)
{
if (showProgress)
//std::cerr << "\e[" << moveBack << "D\e[K\n";
std::cerr << "\n";
long httpStatus = 0;
curl_easy_getinfo(req, CURLINFO_RESPONSE_CODE, &httpStatus);
@ -292,6 +265,7 @@ struct CurlDownloader : public Downloader
try {
result.data = decodeContent(encoding, ref<std::string>(result.data));
callSuccess(success, failure, const_cast<const DownloadResult &>(result));
logger->event(evDownloadSucceeded, act, result.data->size());
} catch (...) {
done = true;
callFailure(failure, std::current_exception());