LogDog: Project READ access for user endpoints.

appengine/logdog/coordinator/endpoints/util.go

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package endpoints
+
+import (
+        "time"
+
+        "github.com/luci/luci-go/common/proto/google"
+)
+
+// MinDuration selects the smallest duration that is > 0 from a set of
+// google.Duration protobufs.
+//
+// If none of the supplied Durations are > 0, 0 will be returned.
+func MinDuration(candidates ...*google.Duration) (exp time.Duration) {
+        for _, c := range candidates {
+                if cd := c.Duration(); cd > 0 && (exp <= 0 || cd < exp) {
+                        exp = cd
+                }
+        }
+        return
+}