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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "backoff.h"
#include <vespa/vespalib/util/signalhandler.h>
namespace slobrok::api {
namespace {
constexpr size_t num_warn_intervals = 5;
const double warn_intervals[num_warn_intervals] = { 1.0, 10.0, 60.0, 600.0, 3600.0 };
}
BackOff::BackOff() { reset(); }
void BackOff::reset() {
_time = 0.0;
_since_last_warn = 0.0;
_nextwarn_idx = 0;
}
double BackOff::get() {
_since_last_warn += _time;
if (_time < 20.0) {
_time += 0.5;
}
return _time;
}
bool BackOff::shouldWarn() {
if (vespalib::SignalHandler::TERM.check()) {
return false;
}
if (_since_last_warn >= warn_intervals[_nextwarn_idx]) {
if (_nextwarn_idx + 1 < num_warn_intervals) {
++_nextwarn_idx;
}
_since_last_warn = 0.0;
return true;
}
return false;
}
} // namespace slobrok::api
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