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book_offers in Cassandra

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CJ Cobb
2021-01-26 12:51:49 -05:00
parent 5d233fce1b
commit f754ff9f5a
7 changed files with 423 additions and 13 deletions
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36
reporting/ReportingBackend.cpp
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@@ -38,6 +38,42 @@ flatMapWriteCallback(CassFuture* fut, void* cbData)
delete &requestParams;
}
}
void
flatMapWriteBookCallback(CassFuture* fut, void* cbData)
{
CassandraFlatMapBackend::WriteCallbackData& requestParams =
*static_cast<CassandraFlatMapBackend::WriteCallbackData*>(cbData);
CassandraFlatMapBackend const& backend = *requestParams.backend;
auto rc = cass_future_error_code(fut);
if (rc != CASS_OK)
{
BOOST_LOG_TRIVIAL(error)
<< "ERROR!!! Cassandra insert error: " << rc << ", "
<< cass_error_desc(rc) << ", retrying ";
// exponential backoff with a max wait of 2^10 ms (about 1 second)
auto wait = std::chrono::milliseconds(
lround(std::pow(2, std::min(10u, requestParams.currentRetries))));
++requestParams.currentRetries;
std::shared_ptr<boost::asio::steady_timer> timer =
std::make_shared<boost::asio::steady_timer>(
backend.ioContext_, std::chrono::steady_clock::now() + wait);
timer->async_wait([timer, &requestParams, &backend](
const boost::system::error_code& error) {
backend.writeBook(requestParams, true);
});
}
else
{
--(backend.numRequestsOutstanding_);
backend.throttleCv_.notify_all();
if (backend.numRequestsOutstanding_ == 0)
backend.syncCv_.notify_all();
int remaining = --requestParams.refs;
if (remaining == 0)
delete &requestParams;
}
}
void
flatMapWriteKeyCallback(CassFuture* fut, void* cbData)