mirror of
https://github.com/ProtonMail/proton-bridge.git
synced 2025-12-16 07:06:45 +00:00
88 lines
2.1 KiB
Go
88 lines
2.1 KiB
Go
// Copyright (c) 2021 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ProtonMail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package pmapi
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import (
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"context"
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"time"
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"github.com/sirupsen/logrus"
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)
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var (
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// retryConnectionSleeps defines a smooth cool down in seconds.
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retryConnectionSleeps = []int{2, 5, 10, 30, 60} // nolint[gochecknoglobals]
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)
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func (m *manager) pingUntilSuccess() {
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if m.isPingOngoing() {
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logrus.Debug("Ping already ongoing")
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return
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}
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m.pingingStarted()
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defer m.pingingStopped()
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attempt := 0
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for {
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ctx := ContextWithoutRetry(context.Background())
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err := m.testPing(ctx)
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if err == nil {
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return
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}
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waitTime := getRetryConnectionSleep(attempt)
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attempt++
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logrus.WithError(err).WithField("attempt", attempt).WithField("wait", waitTime).Debug("Connection (still) not available")
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time.Sleep(waitTime)
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}
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}
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func (m *manager) isPingOngoing() bool {
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m.pingMutex.RLock()
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defer m.pingMutex.RUnlock()
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return m.isPinging
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}
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func (m *manager) pingingStarted() {
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m.pingMutex.Lock()
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defer m.pingMutex.Unlock()
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m.isPinging = true
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}
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func (m *manager) pingingStopped() {
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m.pingMutex.Lock()
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defer m.pingMutex.Unlock()
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m.isPinging = false
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}
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func getRetryConnectionSleep(idx int) time.Duration {
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if idx >= len(retryConnectionSleeps) {
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idx = len(retryConnectionSleeps) - 1
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}
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sec := retryConnectionSleeps[idx]
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return time.Duration(sec) * time.Second
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}
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func (m *manager) testPing(ctx context.Context) error {
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if _, err := m.r(ctx).Get("/tests/ping"); err != nil {
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return err
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}
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return nil
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}
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