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Node_Exporter/vendor/github.com/beevik/ntp/RELEASE_NOTES.md
Brett Vickers b62c7bc0ad Updated vendored ntp package (#681) 
The github.com/beevik/ntp package was recently updated with some
API changes that broke node_exporter. This commit fetches the
latest version of the ntp package and brings node_exporter in
line with the latest API.
2017-10-04 08:33:49 +02:00

2.2 KiB
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Release v0.1.1

Breaking changes

  • Removed the MaxStratum constant.

Deprecations

  • Officially deprecated the TimeV function.

Internal changes

  • Removed minDispersion from the RootDistance calculation, since the value was arbitrary.
  • Moved some validation into main code path so that invalid TransmitTime and mode responses trigger an error even when Response.Validate is not called.

Release v0.1.0

This is the initial release of the ntp package. Currently it supports the following features:

  • Time() to query the current time according to a remote NTP server.
  • Query() to query multiple pieces of time-related information from a remote NTP server.
  • QueryWithOptions(), which is like Query() but with the ability to override default query options.

Time-related information returned by the Query functions includes:

  • Time: the time the server transmitted its response, according to the server's clock.
  • ClockOffset: the estimated offset of the client's clock relative to the server's clock. You may apply this offset to any local system clock reading once the query is complete.
  • RTT: an estimate of the round-trip-time delay between the client and the server.
  • Precision: the precision of the server's clock reading.
  • Stratum: the "stratum" level of the server, where 1 indicates a server directly connected to a reference clock, and values greater than 1 indicating the number of hops from the reference clock.
  • ReferenceID: A unique identifier for the NTP server that was contacted.
  • ReferenceTime: The time at which the server last updated its local clock setting.
  • RootDelay: The server's round-trip delay to the reference clock.
  • RootDispersion: The server's total dispersion to the referenced clock.
  • RootDistance: An estimate of the root synchronization distance.
  • Leap: The leap second indicator.
  • MinError: A lower bound on the clock error between the client and the server.
  • Poll: the maximum polling interval between successive messages on the server.

The Response structure returned by the Query functions also contains a Response.Validate() function that returns an error if any of the fields returned by the server are invalid.