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Simplify logic for DeferDays (renamed from DelayDays) to improve readability; capture and report err in case of getImageAgeDays problem; simplify getImageAgeDays logic; use new MarkDeferred in progress report for deferred items

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This commit is contained in:
Peter Wilhelm 2024-01-07 18:01:59 -06:00
parent 223358f7a0
commit 48bfaef350
1 changed files with 14 additions and 20 deletions
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34
internal/actions/update.go
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@ -2,7 +2,6 @@ package actions
import (
"errors"
"strings"
"time"
"github.com/containrrr/watchtower/internal/util"
@ -38,16 +37,17 @@ func Update(client container.Client, params types.UpdateParams) (types.Report, e
// stale will be true if there is a more recent image than the current container is using
stale, newestImage, err := client.IsContainerStale(targetContainer, params)
shouldUpdate := stale && !params.NoRestart && !targetContainer.IsMonitorOnly(params)
imageUpdateDelayResolved := true
imageUpdateDelayed := false
imageAgeDays := 0
if err == nil && shouldUpdate {
// Check to make sure we have all the necessary information for recreating the container, including ImageInfo
err = targetContainer.VerifyConfiguration()
if err == nil {
if params.DelayDays > 0 {
imageAgeDays, err := getImageAgeDays(targetContainer.ImageInfo().Created)
if params.DeferDays > 0 {
imageAgeDays, imageErr := getImageAgeDays(targetContainer.ImageInfo().Created)
err = imageErr
if err == nil {
imageUpdateDelayResolved = imageAgeDays >= params.DelayDays
imageUpdateDelayed = imageAgeDays < params.DeferDays
}
}
} else if log.IsLevelEnabled(log.TraceLevel) {
@ -66,11 +66,12 @@ func Update(client container.Client, params types.UpdateParams) (types.Report, e
stale = false
staleCheckFailed++
progress.AddSkipped(targetContainer, err)
} else if !imageUpdateDelayResolved {
log.Infof("New image found for %s that was created %d day(s) ago but update delayed until %d day(s) after creation", targetContainer.Name(), imageAgeDays, params.DelayDays)
} else if imageUpdateDelayed {
log.Infof("New image found for %s that was created %d day(s) ago but update deferred until %d day(s) after creation", targetContainer.Name(), imageAgeDays, params.DeferDays)
// technically the container is stale but we set it to false here because it is this stale flag that tells downstream methods whether to perform the update
stale = false
progress.AddScanned(targetContainer, newestImage)
progress.MarkDeferred(targetContainer.ID())
} else {
progress.AddScanned(targetContainer, newestImage)
}
@ -90,9 +91,11 @@ func Update(client container.Client, params types.UpdateParams) (types.Report, e
// containersToUpdate will contain all containers, not just those that need to be updated. The "stale" flag is checked via container.ToRestart()
// within stopContainersInReversedOrder and restartContainersInSortedOrder to skip containers with stale set to false (unless LinkedToRestarting set)
// NOTE: This logic is changing with latest PR on main repo
var containersToUpdate []types.Container
for _, c := range containers {
if !c.IsMonitorOnly(params) {
// pulling this change in from PR 1895 for now to avoid updating status incorrectly
if c.ToRestart() && !c.IsMonitorOnly(params) {
containersToUpdate = append(containersToUpdate, c)
progress.MarkForUpdate(c.ID())
}
@ -286,19 +289,10 @@ func linkedContainerMarkedForRestart(links []string, containers []types.Containe
}
// Finds the difference between now and a given date, in full days. Input date is expected to originate
// from an image's Created attribute in ISO 8601, but since these do not always contain the same number of
// digits for milliseconds, the function also accounts for variations.
// from an image's Created attribute which will follow ISO 3339/8601 format.
// Reference: https://docs.docker.com/engine/api/v1.43/#tag/Image/operation/ImageInspect
func getImageAgeDays(imageCreatedDateTime string) (int, error) {
// Date strings sometimes vary in how many digits after the decimal point are present. If present, drop millisecond portion to standardize.
dotIndex := strings.Index(imageCreatedDateTime, ".")
if dotIndex != -1 {
imageCreatedDateTime = imageCreatedDateTime[:dotIndex] + "Z"
}
// Define the layout string for the date format without milliseconds
layout := "2006-01-02T15:04:05Z"
imageCreatedDate, error := time.Parse(layout, imageCreatedDateTime)
imageCreatedDate, error := time.Parse(time.RFC3339Nano, imageCreatedDateTime)
if error != nil {
log.Errorf("Error parsing imageCreatedDateTime date (%s). Error: %s", imageCreatedDateTime, error)