implemented CLI interface

cmd/s3Browser.go

@@ -4,16 +4,39 @@ import (
 	"time"
 
 	s3browser "git.kapelle.org/niklas/s3browser/internal"
+	"github.com/alexflint/go-arg"
 )
 
+type args struct {
+	S3Endpoint   string `arg:"--s3-endpoint,required,env:S3_ENDPOINT" help:"host[:port]" placeholder:"ENDPOINT"`
+	S3AccessKey  string `arg:"--s3-access-key,required,env:S3_ACCESS_KEY" placeholder:"ACCESS_KEY"`
+	S3SecretKey  string `arg:"--s3-secret-key,required,env:S3_SECRET_KEY" placeholder:"SECRET_KEY"`
+	S3Buket      string `arg:"--s3-buket,required,env:S3_BUKET" placeholder:"BUKET"`
+	S3DisableSSL bool   `arg:"--s3-disable-ssl,env:S3_DISABLE_SSL" default:"false"`
+	Address      string `arg:"--address,env:ADDRESS" default:":3000" help:"what address to listen on" placeholder:"ADDRESS"`
+	CacheTTL     int64  `arg:"--cache-ttl,env:CACHE_TTL" help:"Time in seconds" default:"30" placeholder:"TTL"`
+	CacheCleanup int64  `arg:"--cache-cleanup,env:CACHE_CLEANUP" help:"Time in seconds" default:"60" placeholder:"CLEANUP"`
+	Verbose      bool   `arg:"-v,--verbose,env:VERBOSE" help:"verbosity level" default:"false"`
+}
+
+func (args) Version() string {
+	// TODO
+	return "s3Browser 0.1"
+}
+
 func main() {
+	var args args
+	arg.MustParse(&args)
+
 	s3browser.Start(s3browser.AppConfig{
-		S3Endoint:    "localhost:9000",
+		S3Endoint:    args.S3Endpoint,
-		S3SSL:        false,
+		S3SSL:        !args.S3DisableSSL,
-		S3AccessKey:  "testo",
+		S3AccessKey:  args.S3AccessKey,
-		S3SecretKey:  "testotesto",
+		S3SecretKey:  args.S3SecretKey,
-		S3Buket:      "dev",
+		S3Buket:      args.S3Buket,
-		CacheTTL:     20 * time.Second,
+		CacheTTL:     time.Duration(args.CacheTTL) * time.Second,
-		CacheCleanup: 1 * time.Minute,
+		CacheCleanup: time.Duration(args.CacheCleanup) * time.Second,
+		Address:      args.Address,
+		LogDebug:     args.Verbose,
 	})
 }

go.mod

@@ -3,6 +3,7 @@ module git.kapelle.org/niklas/s3browser
 go 1.16
 
 require (
+	github.com/alexflint/go-arg v1.4.2
 	github.com/graph-gophers/dataloader v5.0.0+incompatible
 	github.com/graphql-go/graphql v0.7.9
 	github.com/graphql-go/handler v0.2.3

go.sum

@@ -1,3 +1,7 @@
+github.com/alexflint/go-arg v1.4.2 h1:lDWZAXxpAnZUq4qwb86p/3rIJJ2Li81EoMbTMujhVa0=
+github.com/alexflint/go-arg v1.4.2/go.mod h1:9iRbDxne7LcR/GSvEr7ma++GLpdIU1zrghf2y2768kM=
+github.com/alexflint/go-scalar v1.0.0 h1:NGupf1XV/Xb04wXskDFzS0KWOLH632W/EO4fAFi+A70=
+github.com/alexflint/go-scalar v1.0.0/go.mod h1:GpHzbCOZXEKMEcygYQ5n/aa4Aq84zbxjy3MxYW0gjYw=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=

internal/httpServer.go

@@ -17,7 +17,7 @@ import (
 )
 
 // initHttp setup and start the http server. Blocking
-func initHttp(resolveContext context.Context, schema graphql.Schema) error {
+func initHttp(resolveContext context.Context, schema graphql.Schema, address string) error {
 	h := handler.New(&handler.Config{
 		Schema:     &schema,
 		Pretty:     true,
@@ -53,7 +53,7 @@ func initHttp(resolveContext context.Context, schema graphql.Schema) error {
 	// Init the embedded static files
 	initStatic()
 
-	return http.ListenAndServe(":8080", nil)
+	return http.ListenAndServe(address, nil)
 }
 
 func httpGetFile(ctx context.Context, rw http.ResponseWriter, r *http.Request) {

internal/s3Broswer.go

@@ -19,6 +19,8 @@ type AppConfig struct {
 	S3Buket      string
 	CacheTTL     time.Duration
 	CacheCleanup time.Duration
+	Address      string
+	LogDebug     bool
 }
 
 // File represents a file with its metadata
@@ -68,7 +70,9 @@ func setupS3Client(config AppConfig) (*minio.Client, error) {
 // Start starts the app
 func Start(config AppConfig) {
 
-	log.SetLevel(log.DebugLevel)
+	if config.LogDebug {
+		log.SetLevel(log.DebugLevel)
+	}
 
 	log.Info("Starting")
 	log.Debug("Setting up s3 client")
@@ -96,7 +100,7 @@ func Start(config AppConfig) {
 	resolveContext = context.WithValue(resolveContext, "loader", loaderMap)
 
 	log.Debug("Starting HTTP server")
-	err = initHttp(resolveContext, schema)
+	err = initHttp(resolveContext, schema, config.Address)
 
 	if err != nil {
 		log.Error("Failed to start webserver: ", err.Error())