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Simplify the callback mechanism

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This commit is contained in:
Eelco Dolstra 2018-03-27 22:16:01 +02:00
parent 1672bcd230
commit 81ea8bd5ce
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16 changed files with 152 additions and 180 deletions
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18
src/libstore/http-binary-cache-store.cc
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@ -78,27 +78,23 @@ protected:
}
void getFile(const std::string & path,
std::function<void(std::shared_ptr<std::string>)> success,
std::function<void(std::exception_ptr exc)> failure) override
Callback<std::shared_ptr<std::string>> callback) override
{
DownloadRequest request(cacheUri + "/" + path);
request.tries = 8;
getDownloader()->enqueueDownload(request,
[success](const DownloadResult & result) {
success(result.data);
},
[success, failure](std::exception_ptr exc) {
{[callback](std::future<DownloadResult> result) {
try {
std::rethrow_exception(exc);
callback(result.get().data);
} catch (DownloadError & e) {
if (e.error == Downloader::NotFound || e.error == Downloader::Forbidden)
return success(0);
failure(exc);
return callback(std::shared_ptr<std::string>());
callback.rethrow();
} catch (...) {
failure(exc);
callback.rethrow();
}
});
}});
}
};