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Stephen Demos e95ad781c1 vendor: vendor glide dependencies 
this lets us specify dependencies more specifically and also build
binaries as a part of the project.
2017-12-05 14:46:15 -08:00
fixtures feat(omaha): add a machineid field 2014-03-17 14:29:04 -07:00
omaha Revert "update_engine_events.go: Add a custom "InstallStarted" event." 2017-08-07 13:19:09 -07:00
vendor/github.com vendor: vendor glide dependencies 2017-12-05 14:46:15 -08:00
.gitignore Initial commit 2013-03-27 16:59:16 -07:00
.travis.yml travis: test against go 1.7 and 1.8 2017-04-21 14:12:44 -07:00
code-of-conduct.md update code of conduct copy 2016-08-09 13:19:44 -07:00
CONTRIBUTING.md CONTRIBUTING: fix line wrapping 2015-10-14 08:48:41 -07:00
DCO chore(contributing): clean up CONTRIBUTING.md and split out DCO 2014-04-04 10:40:37 -07:00
glide.lock glide: add glide yaml files 2017-12-05 14:45:21 -08:00
glide.yaml glide: add glide yaml files 2017-12-05 14:45:21 -08:00
LICENSE feat(*): initial commit 2014-01-19 12:25:11 -08:00
NOTICE NOTICE: Bump copyright year 2017-02-10 09:36:49 -08:00
README.md client: send "Complete" event in update checks 2017-06-09 18:40:25 -07:00

README.md

Go Omaha

Build Status GoDoc

Implementation of the omaha update protocol in Go.

Status

This code is targeted for use with CoreOS's CoreUpdate product and the Container Linux update_engine. As a result this is not a complete implementation of the protocol and inherits a number of quirks from update_engine. These differences include:

  • No offline activity tracking. The protocol's ping mechanism allows for tracking application usage, reporting the number of days since the last ping and how many of those days saw active usage. CoreUpdate does not use this, instead assuming update clients are always online and checking in once every ~45-50 minutes. Clients not actively updating should send only a ping, indicating CoreUpdate's "Instance-Hold" state. Clients requesting an update should send a ping, update check, and an UpdateComplete:SuccessReboot event indicating CoreUpdate's "Complete" state.

  • Various protocol extensions/abuses. update_engine, likely due to earlier limitations of the protocol and Google's server implementation, uses a number of non-standard fields. For example, packing a lot of extra attributes such as the package's SHA-256 hash into a "postinstall" action. As much as possible the code includes comments about these extensions.

  • Many data fields not used by CoreUpdate are omitted.