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add pre/post update check lifecycle hooks (#373)

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* add pre/post update check lifecycle hooks

* update docs for lifecycle hooks

* Fix phrasing
This commit is contained in:
Niklas Wigertz Danielsson 2019-09-15 16:58:46 +02:00 • committed by Simon Aronsson
parent 1b3db5ed5d
commit 135467dcf6
3 changed files with 87 additions and 15 deletions
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52
internal/actions/update.go
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@ -13,6 +13,8 @@ import (
func Update(client container.Client, params UpdateParams) error {
log.Debug("Checking containers for updated images")
executePreCheck(client, params)
containers, err := client.ListContainers(params.Filter)
if err != nil {
return err
@ -36,12 +38,14 @@ func Update(client container.Client, params UpdateParams) error {
checkDependencies(containers)
if params.MonitorOnly {
executePostCheck(client, params)
return nil
}
stopContainersInReversedOrder(containers, client, params)
restartContainersInSortedOrder(containers, client, params)
executePostCheck(client, params)
return nil
}
@ -123,11 +127,58 @@ func checkDependencies(containers []container.Container) {
}
}
func executePreCheck(client container.Client, params UpdateParams) {
containers, err := client.ListContainers(params.Filter)
if err != nil {
return
}
for _, container := range containers {
executePreCheckCommand(client, container)
}
}
func executePostCheck(client container.Client, params UpdateParams) {
containers, err := client.ListContainers(params.Filter)
if err != nil {
return
}
for _, container := range containers {
executePostCheckCommand(client, container)
}
}
func executePreCheckCommand(client container.Client, container container.Container) {
command := container.GetLifecyclePreCheckCommand()
if len(command) == 0 {
log.Debug("No pre-check command supplied. Skipping")
return
}
log.Info("Executing pre-check command.")
if err := client.ExecuteCommand(container.ID(), command); err != nil {
log.Error(err)
}
}
func executePostCheckCommand(client container.Client, container container.Container) {
command := container.GetLifecyclePostCheckCommand()
if len(command) == 0 {
log.Debug("No post-check command supplied. Skipping")
return
}
log.Info("Executing post-check command.")
if err := client.ExecuteCommand(container.ID(), command); err != nil {
log.Error(err)
}
}
func executePreUpdateCommand(client container.Client, container container.Container) {
command := container.GetLifecyclePreUpdateCommand()
if len(command) == 0 {
log.Debug("No pre-update command supplied. Skipping")
return
}
log.Info("Executing pre-update command.")
@ -146,6 +197,7 @@ func executePostUpdateCommand(client container.Client, newContainerID string) {
command := newContainer.GetLifecyclePostUpdateCommand()
if len(command) == 0 {
log.Debug("No post-update command supplied. Skipping")
return
}
log.Info("Executing post-update command.")