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 31 syntax = "proto3"; 32 33 package google.protobuf; 34 35 option csharp_namespace = "Google.Protobuf.WellKnownTypes"; 36 option cc_enable_arenas = true; 37 option go_package = "github.com/golang/protobuf/ptypes/duration"; 38 option java_package = "com.google.protobuf"; 39 option java_outer_classname = "DurationProto"; 40 option java_multiple_files = true; 41 option 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 // # Examples 51 // 52 // Example 1: Compute Duration from two Timestamps in pseudo code. 53 // 54 // Timestamp start = ...; 55 // Timestamp end = ...; 56 // Duration duration = ...; 57 // 58 // duration.seconds = end.seconds - start.seconds; 59 // duration.nanos = end.nanos - start.nanos; 60 // 61 // if (duration.seconds < 0 && duration.nanos > 0) { 62 // duration.seconds += 1; 63 // duration.nanos -= 1000000000; 64 // } else if (durations.seconds > 0 && duration.nanos < 0) { 65 // duration.seconds -= 1; 66 // duration.nanos += 1000000000; 67 // } 68 // 69 // Example 2: Compute Timestamp from Timestamp + Duration in pseudo code. 70 // 71 // Timestamp start = ...; 72 // Duration duration = ...; 73 // Timestamp end = ...; 74 // 75 // end.seconds = start.seconds + duration.seconds; 76 // end.nanos = start.nanos + duration.nanos; 77 // 78 // if (end.nanos < 0) { 79 // end.seconds -= 1; 80 // end.nanos += 1000000000; 81 // } else if (end.nanos >= 1000000000) { 82 // end.seconds += 1; 83 // end.nanos -= 1000000000; 84 // } 85 // 86 // Example 3: Compute Duration from datetime.timedelta in Python. 87 // 88 // td = datetime.timedelta(days=3, minutes=10) 89 // duration = Duration() 90 // duration.FromTimedelta(td) 91 // 92 // # JSON Mapping 93 // 94 // In JSON format, the Duration type is encoded as a string rather than an 95 // object, where the string ends in the suffix "s" (indicating seconds) and 96 // is preceded by the number of seconds, with nanoseconds expressed as 97 // fractional seconds. For example, 3 seconds with 0 nanoseconds should be 98 // encoded in JSON format as "3s", while 3 seconds and 1 nanosecond should 99 // be expressed in JSON format as "3.000000001s", and 3 seconds and 1 100 // microsecond should be expressed in JSON format as "3.000001s". 101 // 102 // 103 message Duration { 104 105 // Signed seconds of the span of time. Must be from -315,576,000,000 106 // to +315,576,000,000 inclusive. Note: these bounds are computed from: 107 // 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years 108 int64 seconds = 1; 109 110 // Signed fractions of a second at nanosecond resolution of the span 111 // of time. Durations less than one second are represented with a 0 112 // `seconds` field and a positive or negative `nanos` field. For durations 113 // of one second or more, a non-zero value for the `nanos` field must be 114 // of the same sign as the `seconds` field. Must be from -999,999,999 115 // to +999,999,999 inclusive. 116 int32 nanos = 2; 117 } 118
