| // Copyright 2014 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package datastore |
| |
| import ( |
| "math" |
| "time" |
| ) |
| |
| var ( |
| minTime = time.Unix(int64(math.MinInt64)/1e6, (int64(math.MinInt64)%1e6)*1e3) |
| maxTime = time.Unix(int64(math.MaxInt64)/1e6, (int64(math.MaxInt64)%1e6)*1e3) |
| ) |
| |
| func toUnixMicro(t time.Time) int64 { |
| // We cannot use t.UnixNano() / 1e3 because we want to handle times more than |
| // 2^63 nanoseconds (which is about 292 years) away from 1970, and those cannot |
| // be represented in the numerator of a single int64 divide. |
| return t.Unix()*1e6 + int64(t.Nanosecond()/1e3) |
| } |
| |
| func fromUnixMicro(t int64) time.Time { |
| return time.Unix(t/1e6, (t%1e6)*1e3) |
| } |