events/jsonmessage: add and prefer TimeNano for events

mirror of https://github.com/clearlinux/docker.git synced 2026-09-06 13:41:36 +00:00

This way provide both Time and TimeNano in the event. For the display of
the JSONMessage, use either, but prefer TimeNano Proving only TimeNano
would break Subscribers that are using the `Time` field, so both are set
for backwards compatibility.

The events logging uses nano formatting, but only provides a Unix()
time, therefor ordering may get lost in the output. Example:
```
2015-09-15T14:18:51.000000000-04:00 ee46febd64ac629f7de9cd8bf58582e6f263d97ff46896adc5b508db804682da: (from busybox) resize
2015-09-15T14:18:51.000000000-04:00 a78c9149b1c0474502a117efaa814541926c2ae6ec3c76607e1c931b84c3a44b: (from busybox) resize
```

By having a field just for Nano time, when set, the marshalling back to
`time.Unix(sec int64, nsec int64)` has zeros exactly where it needs to.
This does not break any existing use of jsonmessage.JSONMessage, but now
allows for use of `UnixNano()` and get event formatting that has
distinguishable order. Example:
```
2015-09-15T15:37:23.810295632-04:00 6adcf8ed9f5f5ec059a915466cd1cde86a18b4a085fc3af405e9cc9fecbbbbaf: (from busybox) resize
2015-09-15T15:37:23.810412202-04:00 6b7c5bfdc3f902096f5a91e628f21bd4b56e32590c5b4b97044aafc005ddcb0d: (from busybox) resize
```

Including tests for TimeNano and updated event API reference doc.

Signed-off-by: Vincent Batts <vbatts@redhat.com>

This commit is contained in:

Vincent Batts

2015-09-18 13:15:26 -04:00

parent 41646cb4e3

commit 4026512a2c

5 changed files with 36 additions and 10 deletions

									
										docs/reference/api/docker_remote_api.md
									
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				@@ -87,6 +87,7 @@ This section lists each version from latest to oldest.  Each listing includes a

				* The `hostConfig` option now accepts the field `DnsOptions`, which specifies a

				list of DNS options to be used in the container.

				* `POST /build` now optionally takes a serialized map of build-time variables.

				* `GET /events` now includes a `timenano` field, in addition to the existing `time` field.

				### v1.20 API changes