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Code Issues Releases Wiki Activity

Dynamic fast fail handling

This commit is contained in:
M66B 2020-10-29 10:45:24 +01:00
parent 26496c1341
commit 5a36462feb
1 changed files with 40 additions and 0 deletions
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40
app/src/main/java/eu/faircode/email/ServiceSynchronize.java
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@ -901,6 +901,8 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
account.deleteNotificationChannel(ServiceSynchronize.this);
}
int fast_fails = 0;
long first_fail = 0;
state.setBackoff(CONNECT_BACKOFF_START);
while (state.isRunning() &&
currentThread != null && currentThread.equals(thread)) {
@ -1690,6 +1692,44 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
if (state.isRunning()) {
long now = new Date().getTime();
// Check for fast successive server, connectivity, etc failures
long fail_threshold = account.poll_interval * 60 * 1000L * 2 / 3;
if (account.last_connected == null ||
now - account.last_connected < fail_threshold) {
if (state.getBackoff() == CONNECT_BACKOFF_START) {
fast_fails++;
if (fast_fails == 1)
first_fail = now;
else {
long avg_fail = (now - first_fail) / fast_fails;
if (avg_fail < fail_threshold) {
long missing = (fail_threshold - avg_fail) * fast_fails;
int compensate = (int) (missing / (CONNECT_BACKOFF_ALARM_START * 60 * 1000L));
if (compensate > 0) {
int backoff = compensate * CONNECT_BACKOFF_ALARM_START;
if (backoff > CONNECT_BACKOFF_ALARM_MAX)
backoff = CONNECT_BACKOFF_ALARM_MAX;
String msg = "Fast" +
" fails=" + fast_fails +
" first=" + (now - first_fail) +
" avg=" + (avg_fail / 1000L) + "/" + (fail_threshold / 1000L) +
" missing=" + (missing / 1000L) +
" compensate=" + compensate +
" backoff=" + backoff +
" host=" + account.host;
Log.e(msg);
EntityLog.log(this, msg);
state.setBackoff(backoff * 60);
}
}
}
}
} else {
fast_fails = 0;
first_fail = 0;
}
int backoff = state.getBackoff();
int max = CONNECT_BACKOFF_MAX * (lastLost + RECONNECT_BACKOFF < now ? 1 : 2);
EntityLog.log(this, account.name + " backoff=" + backoff + " max=" + max);