I/E measurements

internal/transfer/timeit.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package transfer
+
+import (
+	"sync"
+	"time"
+)
+
+type timeIt struct {
+	lock    sync.Locker
+	name    string
+	groups  map[string]int64
+	ongoing map[string]time.Time
+}
+
+func newTimeIt(name string) *timeIt {
+	return &timeIt{
+		lock:    &sync.Mutex{},
+		name:    name,
+		groups:  map[string]int64{},
+		ongoing: map[string]time.Time{},
+	}
+}
+
+func (t *timeIt) clear() {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	t.groups = map[string]int64{}
+	t.ongoing = map[string]time.Time{}
+}
+
+func (t *timeIt) start(group, id string) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	t.ongoing[group+"/"+id] = time.Now()
+}
+
+func (t *timeIt) stop(group, id string) {
+	endTime := time.Now()
+
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	startTime, ok := t.ongoing[group+"/"+id]
+	if !ok {
+		log.WithField("group", group).WithField("id", id).Error("Stop called before start")
+		return
+	}
+	delete(t.ongoing, group+"/"+id)
+
+	diff := endTime.Sub(startTime).Milliseconds()
+	t.groups[group] += diff
+}
+
+func (t *timeIt) logResults() {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	// Print also ongoing to be sure that nothing was left out.
+	// Basically ongoing should be empty.
+	log.WithField("name", t.name).WithField("result", t.groups).WithField("ongoing", t.ongoing).Debug("Time measurement")
+}