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Implement waitToKill, keep RESIN_OVERRIDE_LOCK, and changelog for update strategies

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Pablo Carranza Vélez 2015-11-16 10:24:30 -08:00
parent 13dce75a21
commit 1d6811a423
2 changed files with 21 additions and 3 deletions
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2
CHANGELOG.md
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@ -1,3 +1,5 @@
* Refactor the still undocumented special env vars into RESIN_SUPERVISOR_ [Pablo]
* Implement several update strategies (kill before download, 0-downtime) [Pablo]
* Fix the error that comes up when no ip addresses are returned by gosuper [Praneeth]
* Switched to docker-progress for pull progress. [Page]
* Fix semver versioning in tcp-ping endpoint. [Praneeth]

22
src/application.coffee
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@ -250,6 +250,10 @@ lockPath = (app) ->
appId = app.appId ? app
return "/mnt/root/resin-data/#{appId}/resin-updates.lock"
killmePath = (app) ->
appId = app.appId ? app
return "/mnt/root/resin-data/#{appId}/resin-kill-me"
# At boot, all apps should be unlocked *before* start to prevent a deadlock
application.unlockAndStart = unlockAndStart = (app) ->
lockFile.unlockAsync(lockPath(app))
@ -299,6 +303,7 @@ apiPollInterval = (val) ->
application.poll()
specialActionEnvVars =
'RESIN_OVERRIDE_LOCK': null # This one is in use, so we keep backwards comp.
'RESIN_SUPERVISOR_UPDATE_STRATEGY': null
'RESIN_SUPERVISOR_HANDOVER_TIMEOUT': null
'RESIN_SUPERVISOR_OVERRIDE_LOCK': null
@ -333,9 +338,20 @@ selectAndKill = (appId) ->
throw new Error('App not found')
kill(app)
# Wait for app to signal it's ready to die, or timeout to complete (if it is defined and not-empty)
waitToKill = (app, timeout) ->
# TO-DO
# Wait for app to signal it's ready to die, or timeout to complete (if it is defined and not-empty)
startTime = Date.now()
pollInterval = 100
timeout = parseInt(timeout)
checkFileOrTimeout = ->
fs.statAsync(killmePath(app))
.catch (err) ->
throw err if isNaN(timeout) or (Date.now() - startTime) < timeout
.then ->
fs.unlinkAsync(killmePath(app)).catch(_.noop)
checkFileOrTimeout()
.catch ->
Promise.delay(pollInterval).then(checkFileOrTimeout)
UPDATE_IDLE = 0
UPDATE_UPDATING = 1
@ -528,7 +544,7 @@ application.update = update = (force) ->
app = remoteApps[appId]
# Restore the complete environment so that it's persisted in the DB
app.env = JSON.stringify(remoteAppEnvs[appId])
forceThisApp = remoteAppEnvs[appId]['RESIN_SUPERVISOR_OVERRIDE_LOCK'] == '1'
forceThisApp = remoteAppEnvs[appId]['RESIN_SUPERVISOR_OVERRIDE_LOCK'] == '1' || remoteAppEnvs[appId]['RESIN_OVERRIDE_LOCK'] == '1'
strategy = remoteAppEnvs[appId]['RESIN_SUPERVISOR_UPDATE_STRATEGY']
timeout = remoteAppEnvs[appId]['RESIN_SUPERVISOR_HANDOVER_TIMEOUT']
updateUsingStrategy(strategy, apps[appId], app, needsDownload, force || forceThisApp, timeout)