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Watchtower HTTP API based updates (#432)

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* Added HTTP API trigger to update running images

* Adds HTTP API authentication token parameter and handling

* Exposes port 8080 in Dockerfile to allow inter-container update triggering via HTTP API

* Fixes codacy issue

* Adds API usage doc

* Fix grammar

* Moves api logic to a package of its own

* Makes WT exit if token has not been set in HTTP API mode

* Adds lock to prevent concurrent updates when in HTTP API mode

Co-authored-by: Simon Aronsson <simme@arcticbit.se>
This commit is contained in:
Victor Moura 2020-04-20 11:17:14 -03:00 • committed by GitHub
parent 557f4abcb4
commit 0217e116c4
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6 changed files with 143 additions and 0 deletions
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13
cmd/root.go
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@ -9,6 +9,7 @@ import (
"github.com/containrrr/watchtower/internal/actions"
"github.com/containrrr/watchtower/internal/flags"
"github.com/containrrr/watchtower/pkg/api"
"github.com/containrrr/watchtower/pkg/container"
"github.com/containrrr/watchtower/pkg/filters"
"github.com/containrrr/watchtower/pkg/notifications"
@ -111,6 +112,18 @@ func PreRun(cmd *cobra.Command, args []string) {
func Run(c *cobra.Command, names []string) {
filter := filters.BuildFilter(names, enableLabel)
runOnce, _ := c.PersistentFlags().GetBool("run-once")
httpAPI, _ := c.PersistentFlags().GetBool("http-api")
if httpAPI {
apiToken, _ := c.PersistentFlags().GetString("http-api-token")
if err := api.SetupHTTPUpdates(apiToken, func() { runUpdatesWithNotifications(filter) }); err != nil {
log.Fatal(err)
os.Exit(1)
}
api.WaitForHTTPUpdates()
}
if runOnce {
if noStartupMessage, _ := c.PersistentFlags().GetBool("no-startup-message"); !noStartupMessage {