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79 lines
2.8 KiB
79 lines
2.8 KiB
10 years ago
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// Copyright (c) 2015, Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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syntax = "proto3";
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package google.protobuf;
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option java_generate_equals_and_hash = true;
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option java_multiple_files = true;
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option java_outer_classname = "DurationProto";
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option java_package = "com.google.protobuf";
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// A Duration represents a signed, fixed-length span of time represented
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// as a count of seconds and fractions of seconds at nanosecond
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// resolution. It is independent of any calendar and concepts like "day"
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// or "month". It is related to Timestamp in that the difference between
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// two Timestamp values is a Duration and it can be added or subtracted
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// from a Timestamp. Range is approximately +-10,000 years.
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//
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// Example 1: Compute Duration from two Timestamps in pseudo code.
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//
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// Timestamp start = ...;
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// Timestamp end = ...;
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// Duration duration = ...;
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//
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// duration.seconds = end.seconds - start.seconds;
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// duration.nanos = end.nanos - start.nanos;
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//
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// if (duration.seconds < 0 && duration.nanos > 0) {
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// duration.seconds += 1;
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// duration.nanos -= 1000000000;
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// } else if (durations.seconds > 0 && duration.nanos < 0) {
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// duration.seconds -= 1;
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// duration.nanos += 1000000000;
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// }
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//
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// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
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//
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// Timestamp start = ...;
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// Duration duration = ...;
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// Timestamp end = ...;
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//
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// end.seconds = start.seconds + duration.seconds;
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// end.nanos = start.nanos + duration.nanos;
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//
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// if (end.nanos < 0) {
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// end.seconds -= 1;
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// end.nanos += 1000000000;
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// } else if (end.nanos >= 1000000000) {
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// end.seconds += 1;
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// end.nanos -= 1000000000;
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// }
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//
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message Duration {
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// Signed seconds of the span of time. Must be from -315,576,000,000
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// to +315,576,000,000 inclusive.
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int64 seconds = 1;
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// Signed fractions of a second at nanosecond resolution of the span
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// of time. Durations less than one second are represented with a 0
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// `seconds` field and a positive or negative `nanos` field. For durations
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// of one second or more, a non-zero value for the `nanos` field must be
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// of the same sign as the `seconds` field. Must be from -999,999,999
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// to +999,999,999 inclusive.
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int32 nanos = 2;
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}
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