X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/00900388c9704a4fe76a459934a2b9f73a3cec1a..b4dbb53529d133660403c1761f06cb321cbc70f6:/services/keep-balance/main.go

diff --git a/services/keep-balance/main.go b/services/keep-balance/main.go
index 49cb17dfa2..6bc9989589 100644
--- a/services/keep-balance/main.go
+++ b/services/keep-balance/main.go
@@ -2,17 +2,17 @@
 //
 // SPDX-License-Identifier: AGPL-3.0
 
-package main
+package keepbalance
 
 import (
+	"bytes"
 	"context"
 	"flag"
 	"fmt"
 	"io"
-	"net/http"
 	_ "net/http/pprof"
-	"os"
 
+	"git.arvados.org/arvados.git/lib/cmd"
 	"git.arvados.org/arvados.git/lib/config"
 	"git.arvados.org/arvados.git/lib/service"
 	"git.arvados.org/arvados.git/sdk/go/arvados"
@@ -21,16 +21,13 @@ import (
 	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq"
 	"github.com/prometheus/client_golang/prometheus"
-	"github.com/sirupsen/logrus"
 )
 
-func main() {
-	os.Exit(runCommand(os.Args[0], os.Args[1:], os.Stdin, os.Stdout, os.Stderr))
-}
+type command struct{}
 
-func runCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
-	logger := ctxlog.FromContext(context.Background())
+var Command = command{}
 
+func (command) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
 	var options RunOptions
 	flags := flag.NewFlagSet(prog, flag.ContinueOnError)
 	flags.BoolVar(&options.Once, "once", false,
@@ -41,38 +38,21 @@ func runCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.W
 		"send trash requests (delete unreferenced old blocks, and excess replicas of overreplicated blocks)")
 	flags.BoolVar(&options.CommitConfirmedFields, "commit-confirmed-fields", true,
 		"update collection fields (replicas_confirmed, storage_classes_confirmed, etc.)")
-	dumpFlag := flags.Bool("dump", false, "dump details for each block to stdout")
-	pprofAddr := flags.String("pprof", "", "serve Go profile data at `[addr]:port`")
-	// "show version" is implemented by service.Command, so we
-	// don't need the var here -- we just need the -version flag
+	flags.StringVar(&options.ChunkPrefix, "chunk-prefix", "",
+		"operate only on blocks with the given prefix (experimental, see https://dev.arvados.org/issues/19923)")
+	// These options are implemented by service.Command, so we
+	// don't need the vars here -- we just need the flags
 	// to pass flags.Parse().
+	flags.Bool("dump", false, "dump details for each block to stdout")
+	flags.String("pprof", "", "serve Go profile data at `[addr]:port`")
 	flags.Bool("version", false, "Write version information to stdout and exit 0")
 
-	if *pprofAddr != "" {
-		go func() {
-			logrus.Println(http.ListenAndServe(*pprofAddr, nil))
-		}()
-	}
-
-	loader := config.NewLoader(os.Stdin, logger)
+	logger := ctxlog.New(stderr, "json", "info")
+	loader := config.NewLoader(&bytes.Buffer{}, logger)
 	loader.SetupFlags(flags)
-
 	munged := loader.MungeLegacyConfigArgs(logger, args, "-legacy-keepbalance-config")
-	err := flags.Parse(munged)
-	if err == flag.ErrHelp {
-		return 0
-	} else if err != nil {
-		return 2
-	} else if flags.NArg() != 0 {
-		fmt.Fprintf(stderr, "unrecognized command line arguments: %v", flags.Args())
-		return 2
-	}
-
-	if *dumpFlag {
-		dumper := logrus.New()
-		dumper.Out = os.Stdout
-		dumper.Formatter = &logrus.TextFormatter{}
-		options.Dumper = dumper
+	if ok, code := cmd.ParseFlags(flags, prog, munged, "", stderr); !ok {
+		return code
 	}
 
 	// Drop our custom args that would be rejected by the generic
@@ -134,7 +114,7 @@ func runCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.W
 				Routes: health.Routes{"ping": srv.CheckHealth},
 			}
 
-			go srv.run()
+			go srv.run(ctx)
 			return srv
 		}).RunCommand(prog, args, stdin, stdout, stderr)
 }