1// Protocol Buffers - Google's data interchange format 2// Copyright 2008 Google Inc. All rights reserved. 3// https://developers.google.com/protocol-buffers/ 4// 5// Redistribution and use in source and binary forms, with or without 6// modification, are permitted provided that the following conditions are 7// met: 8// 9// * Redistributions of source code must retain the above copyright 10// notice, this list of conditions and the following disclaimer. 11// * Redistributions in binary form must reproduce the above 12// copyright notice, this list of conditions and the following disclaimer 13// in the documentation and/or other materials provided with the 14// distribution. 15// * Neither the name of Google Inc. nor the names of its 16// contributors may be used to endorse or promote products derived from 17// this software without specific prior written permission. 18// 19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31syntax = "proto3"; 32 33package google.protobuf; 34 35option csharp_namespace = "Google.Protobuf.WellKnownTypes"; 36option go_package = "github.com/golang/protobuf/ptypes/duration"; 37option java_package = "com.google.protobuf"; 38option java_outer_classname = "DurationProto"; 39option java_multiple_files = true; 40option java_generate_equals_and_hash = true; 41option objc_class_prefix = "GPB"; 42 43// A Duration represents a signed, fixed-length span of time represented 44// as a count of seconds and fractions of seconds at nanosecond 45// resolution. It is independent of any calendar and concepts like "day" 46// or "month". It is related to Timestamp in that the difference between 47// two Timestamp values is a Duration and it can be added or subtracted 48// from a Timestamp. Range is approximately +-10,000 years. 49// 50// Example 1: Compute Duration from two Timestamps in pseudo code. 51// 52// Timestamp start = ...; 53// Timestamp end = ...; 54// Duration duration = ...; 55// 56// duration.seconds = end.seconds - start.seconds; 57// duration.nanos = end.nanos - start.nanos; 58// 59// if (duration.seconds < 0 && duration.nanos > 0) { 60// duration.seconds += 1; 61// duration.nanos -= 1000000000; 62// } else if (durations.seconds > 0 && duration.nanos < 0) { 63// duration.seconds -= 1; 64// duration.nanos += 1000000000; 65// } 66// 67// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code. 68// 69// Timestamp start = ...; 70// Duration duration = ...; 71// Timestamp end = ...; 72// 73// end.seconds = start.seconds + duration.seconds; 74// end.nanos = start.nanos + duration.nanos; 75// 76// if (end.nanos < 0) { 77// end.seconds -= 1; 78// end.nanos += 1000000000; 79// } else if (end.nanos >= 1000000000) { 80// end.seconds += 1; 81// end.nanos -= 1000000000; 82// } 83// 84// 85message Duration { 86 87 // Signed seconds of the span of time. Must be from -315,576,000,000 88 // to +315,576,000,000 inclusive. 89 int64 seconds = 1; 90 91 // Signed fractions of a second at nanosecond resolution of the span 92 // of time. Durations less than one second are represented with a 0 93 // `seconds` field and a positive or negative `nanos` field. For durations 94 // of one second or more, a non-zero value for the `nanos` field must be 95 // of the same sign as the `seconds` field. Must be from -999,999,999 96 // to +999,999,999 inclusive. 97 int32 nanos = 2; 98} 99