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Add option to wait for docker before starting (#1705)

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This commit is contained in:
Clemens Wolff
2022-04-02 23:30:21 -04:00
committed by GitHub
parent f7d82d2ede
commit 76f83800f7
2 changed files with 24 additions and 14 deletions
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37
main.go
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@@ -25,16 +25,17 @@ var (
)
type args struct {
Addr string `arg:"env:DOZZLE_ADDR" default:":8080" help:"sets host:port to bind for server. This is rarely needed inside a docker container."`
Base string `arg:"env:DOZZLE_BASE" default:"/" help:"sets the base for http router."`
Level string `arg:"env:DOZZLE_LEVEL" default:"info" help:"set Dozzle log level. Use debug for more logging."`
TailSize int `arg:"env:DOZZLE_TAILSIZE" default:"300" help:"update the initial tail size when fetching logs."`
Key string `arg:"env:DOZZLE_KEY" help:"set a random key for username and password. This is required for auth."`
Username string `arg:"env:DOZZLE_USERNAME" help:"sets the username for auth."`
Password string `arg:"env:DOZZLE_PASSWORD" help:"sets password for auth"`
NoAnalytics bool `arg:"--no-analytics,env:DOZZLE_NO_ANALYTICS" help:"disables anonymous analytics"`
FilterStrings []string `arg:"env:DOZZLE_FILTER,--filter,separate" help:"filters docker containers using Docker syntax."`
Filter map[string][]string `arg:"-"`
Addr string `arg:"env:DOZZLE_ADDR" default:":8080" help:"sets host:port to bind for server. This is rarely needed inside a docker container."`
Base string `arg:"env:DOZZLE_BASE" default:"/" help:"sets the base for http router."`
Level string `arg:"env:DOZZLE_LEVEL" default:"info" help:"set Dozzle log level. Use debug for more logging."`
TailSize int `arg:"env:DOZZLE_TAILSIZE" default:"300" help:"update the initial tail size when fetching logs."`
Key string `arg:"env:DOZZLE_KEY" help:"set a random key for username and password. This is required for auth."`
Username string `arg:"env:DOZZLE_USERNAME" help:"sets the username for auth."`
Password string `arg:"env:DOZZLE_PASSWORD" help:"sets password for auth"`
NoAnalytics bool `arg:"--no-analytics,env:DOZZLE_NO_ANALYTICS" help:"disables anonymous analytics"`
WaitForDockerSeconds int `arg:"--wait-for-docker-seconds,env:DOZZLE_WAIT_FOR_DOCKER_SECONDS" help:"wait for docker to be available for at most this many seconds before starting the server."`
FilterStrings []string `arg:"env:DOZZLE_FILTER,--filter,separate" help:"filters docker containers using Docker syntax."`
Filter map[string][]string `arg:"-"`
}
func (args) Version() string {
@@ -46,6 +47,7 @@ var content embed.FS
func main() {
var args args
var err error
parser := arg.MustParse(&args)
args.Filter = make(map[string][]string)
@@ -69,10 +71,17 @@ func main() {
log.Infof("Dozzle version %s", version)
dockerClient := docker.NewClientWithFilters(args.Filter)
_, err := dockerClient.ListContainers()
if err != nil {
log.Fatalf("Could not connect to Docker Engine: %v", err)
for i := 1; ; i++ {
_, err := dockerClient.ListContainers()
if err == nil {
break
} else if args.WaitForDockerSeconds <= 0 {
log.Fatalf("Could not connect to Docker Engine: %v", err)
} else {
log.Infof("Waiting for Docker Engine (attempt %d): %s", i, err)
time.Sleep(5 * time.Second)
args.WaitForDockerSeconds -= 5
}
}
if args.Username != "" || args.Password != "" {