bneradt commented on code in PR #13092:
URL: https://github.com/apache/trafficserver/pull/13092#discussion_r3119548032
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src/iocore/hostdb/HostDBInfo.cc:
##########
@@ -95,3 +97,152 @@ HostDBInfo::srvname() const
{
return data.srv.srv_offset ? reinterpret_cast<char const *>(this) +
data.srv.srv_offset : nullptr;
}
+
+HostDBInfo &
+HostDBInfo::operator=(HostDBInfo const &that)
+{
+ if (this != &that) {
+ memcpy(static_cast<void *>(this), static_cast<const void *>(&that),
sizeof(*this));
+ }
+ return *this;
+}
+
+ts_time
+HostDBInfo::last_fail_time() const
+{
+ return _last_failure;
+}
+
+uint8_t
+HostDBInfo::fail_count() const
+{
+ return _fail_count;
+}
+
+HostDBInfo::State
+HostDBInfo::state(ts_time now, ts_seconds fail_window) const
+{
+ auto last_fail = this->last_fail_time();
+ if (last_fail == TS_TIME_ZERO) {
+ return State::UP;
+ }
+
+ if (now <= last_fail + fail_window) {
+ return State::DOWN;
+ } else {
+ return State::SUSPECT;
+ }
+}
+
+bool
+HostDBInfo::is_up() const
+{
+ return this->last_fail_time() == TS_TIME_ZERO;
+}
+
+bool
+HostDBInfo::is_down(ts_time now, ts_seconds fail_window) const
+{
+ return this->state(now, fail_window) == State::DOWN;
+}
+
+bool
+HostDBInfo::is_suspect(ts_time now, ts_seconds fail_window) const
+{
+ return this->state(now, fail_window) == State::SUSPECT;
+}
+
+/** Mark the target as UP
+ *
+ * @return @c true if the target was previously DOWN or SUSPECT (i.e., a state
change occurred).
+ */
+bool
+HostDBInfo::mark_up()
+{
+ auto t = _last_failure.exchange(TS_TIME_ZERO);
+ _fail_count.store(0);
+
+ return t != TS_TIME_ZERO;
+}
+
+/** Mark the entry as DOWN.
+ *
+ * @param now Time of the failure.
+ * @param fail_window The fail window duration
(proxy.config.http.down_server.cache_time).
Review Comment:
https://github.com/apache/trafficserver/pull/13112
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