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147 lines
6.3 KiB
147 lines
6.3 KiB
// Protocol Buffers - Google's data interchange format |
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// Copyright 2008 Google Inc. All rights reserved. |
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// https://developers.google.com/protocol-buffers/ |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// * Neither the name of Google Inc. nor the names of its |
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// contributors may be used to endorse or promote products derived from |
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// this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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syntax = "proto3"; |
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package google.protobuf; |
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option csharp_namespace = "Google.Protobuf.WellKnownTypes"; |
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option cc_enable_arenas = true; |
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option go_package = "google.golang.org/protobuf/types/known/timestamppb"; |
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option java_package = "com.google.protobuf"; |
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option java_outer_classname = "TimestampProto"; |
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option java_multiple_files = true; |
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option objc_class_prefix = "GPB"; |
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// A Timestamp represents a point in time independent of any time zone or local |
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// calendar, encoded as a count of seconds and fractions of seconds at |
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// nanosecond resolution. The count is relative to an epoch at UTC midnight on |
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// January 1, 1970, in the proleptic Gregorian calendar which extends the |
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// Gregorian calendar backwards to year one. |
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// |
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// All minutes are 60 seconds long. Leap seconds are "smeared" so that no leap |
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// second table is needed for interpretation, using a [24-hour linear |
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// smear](https://developers.google.com/time/smear). |
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// |
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// The range is from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. By |
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// restricting to that range, we ensure that we can convert to and from [RFC |
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// 3339](https://www.ietf.org/rfc/rfc3339.txt) date strings. |
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// |
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// # Examples |
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// |
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// Example 1: Compute Timestamp from POSIX `time()`. |
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// |
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// Timestamp timestamp; |
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// timestamp.set_seconds(time(NULL)); |
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// timestamp.set_nanos(0); |
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// |
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// Example 2: Compute Timestamp from POSIX `gettimeofday()`. |
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// |
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// struct timeval tv; |
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// gettimeofday(&tv, NULL); |
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// |
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// Timestamp timestamp; |
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// timestamp.set_seconds(tv.tv_sec); |
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// timestamp.set_nanos(tv.tv_usec * 1000); |
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// |
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// Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`. |
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// |
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// FILETIME ft; |
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// GetSystemTimeAsFileTime(&ft); |
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// UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime; |
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// |
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// // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z |
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// // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z. |
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// Timestamp timestamp; |
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// timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL)); |
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// timestamp.set_nanos((INT32) ((ticks % 10000000) * 100)); |
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// |
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// Example 4: Compute Timestamp from Java `System.currentTimeMillis()`. |
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// |
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// long millis = System.currentTimeMillis(); |
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// |
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// Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000) |
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// .setNanos((int) ((millis % 1000) * 1000000)).build(); |
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// |
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// |
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// Example 5: Compute Timestamp from Java `Instant.now()`. |
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// |
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// Instant now = Instant.now(); |
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// |
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// Timestamp timestamp = |
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// Timestamp.newBuilder().setSeconds(now.getEpochSecond()) |
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// .setNanos(now.getNano()).build(); |
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// |
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// |
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// Example 6: Compute Timestamp from current time in Python. |
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// |
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// timestamp = Timestamp() |
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// timestamp.GetCurrentTime() |
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// |
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// # JSON Mapping |
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// |
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// In JSON format, the Timestamp type is encoded as a string in the |
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// [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format. That is, the |
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// format is "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z" |
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// where {year} is always expressed using four digits while {month}, {day}, |
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// {hour}, {min}, and {sec} are zero-padded to two digits each. The fractional |
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// seconds, which can go up to 9 digits (i.e. up to 1 nanosecond resolution), |
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// are optional. The "Z" suffix indicates the timezone ("UTC"); the timezone |
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// is required. A proto3 JSON serializer should always use UTC (as indicated by |
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// "Z") when printing the Timestamp type and a proto3 JSON parser should be |
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// able to accept both UTC and other timezones (as indicated by an offset). |
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// |
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// For example, "2017-01-15T01:30:15.01Z" encodes 15.01 seconds past |
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// 01:30 UTC on January 15, 2017. |
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// |
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// In JavaScript, one can convert a Date object to this format using the |
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// standard |
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// [toISOString()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString) |
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// method. In Python, a standard `datetime.datetime` object can be converted |
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// to this format using |
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// [`strftime`](https://docs.python.org/2/library/time.html#time.strftime) with |
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// the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one can use |
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// the Joda Time's [`ISODateTimeFormat.dateTime()`]( |
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// http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime%2D%2D |
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// ) to obtain a formatter capable of generating timestamps in this format. |
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// |
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// |
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message Timestamp { |
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// Represents seconds of UTC time since Unix epoch |
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// 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to |
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// 9999-12-31T23:59:59Z inclusive. |
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int64 seconds = 1; |
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// Non-negative fractions of a second at nanosecond resolution. Negative |
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// second values with fractions must still have non-negative nanos values |
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// that count forward in time. Must be from 0 to 999,999,999 |
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// inclusive. |
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int32 nanos = 2; |
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}
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