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68 lines
2.7 KiB
Go
68 lines
2.7 KiB
Go
package container
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import "strconv"
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const (
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watchtowerLabel = "com.centurylinklabs.watchtower"
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signalLabel = "com.centurylinklabs.watchtower.stop-signal"
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enableLabel = "com.centurylinklabs.watchtower.enable"
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monitorOnlyLabel = "com.centurylinklabs.watchtower.monitor-only"
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noPullLabel = "com.centurylinklabs.watchtower.no-pull"
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dependsOnLabel = "com.centurylinklabs.watchtower.depends-on"
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zodiacLabel = "com.centurylinklabs.zodiac.original-image"
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scope = "com.centurylinklabs.watchtower.scope"
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preCheckLabel = "com.centurylinklabs.watchtower.lifecycle.pre-check"
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postCheckLabel = "com.centurylinklabs.watchtower.lifecycle.post-check"
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preUpdateLabel = "com.centurylinklabs.watchtower.lifecycle.pre-update"
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postUpdateLabel = "com.centurylinklabs.watchtower.lifecycle.post-update"
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preUpdateTimeoutLabel = "com.centurylinklabs.watchtower.lifecycle.pre-update-timeout"
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postUpdateTimeoutLabel = "com.centurylinklabs.watchtower.lifecycle.post-update-timeout"
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)
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// GetLifecyclePreCheckCommand returns the pre-check command set in the container metadata or an empty string
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func (c Container) GetLifecyclePreCheckCommand() string {
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return c.getLabelValueOrEmpty(preCheckLabel)
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}
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// GetLifecyclePostCheckCommand returns the post-check command set in the container metadata or an empty string
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func (c Container) GetLifecyclePostCheckCommand() string {
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return c.getLabelValueOrEmpty(postCheckLabel)
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}
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// GetLifecyclePreUpdateCommand returns the pre-update command set in the container metadata or an empty string
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func (c Container) GetLifecyclePreUpdateCommand() string {
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return c.getLabelValueOrEmpty(preUpdateLabel)
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}
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// GetLifecyclePostUpdateCommand returns the post-update command set in the container metadata or an empty string
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func (c Container) GetLifecyclePostUpdateCommand() string {
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return c.getLabelValueOrEmpty(postUpdateLabel)
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}
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// ContainsWatchtowerLabel takes a map of labels and values and tells
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// the consumer whether it contains a valid watchtower instance label
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func ContainsWatchtowerLabel(labels map[string]string) bool {
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val, ok := labels[watchtowerLabel]
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return ok && val == "true"
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}
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func (c Container) getLabelValueOrEmpty(label string) string {
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if val, ok := c.containerInfo.Config.Labels[label]; ok {
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return val
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}
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return ""
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}
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func (c Container) getLabelValue(label string) (string, bool) {
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val, ok := c.containerInfo.Config.Labels[label]
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return val, ok
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}
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func (c Container) getBoolLabelValue(label string) (bool, error) {
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if strVal, ok := c.containerInfo.Config.Labels[label]; ok {
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value, err := strconv.ParseBool(strVal)
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return value, err
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}
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return false, errorLabelNotFound
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}
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