X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/063eb858429a7472c888261d0512fd960e92b7ae..aa9507e1633819259794ea4d6cf391dc88621dac:/services/keep-balance/main.go diff --git a/services/keep-balance/main.go b/services/keep-balance/main.go index e3e90d3581..b016db22ff 100644 --- a/services/keep-balance/main.go +++ b/services/keep-balance/main.go @@ -2,99 +2,117 @@ // // SPDX-License-Identifier: AGPL-3.0 -package main +package keepbalance import ( - "encoding/json" + "bytes" + "context" "flag" "fmt" - "log" - "net/http" - "os" - "time" + "io" + _ "net/http/pprof" - "git.curoverse.com/arvados.git/sdk/go/arvados" - "git.curoverse.com/arvados.git/sdk/go/config" - "github.com/Sirupsen/logrus" + "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" + "git.arvados.org/arvados.git/sdk/go/ctxlog" + "git.arvados.org/arvados.git/sdk/go/health" + "github.com/jmoiron/sqlx" + _ "github.com/lib/pq" + "github.com/prometheus/client_golang/prometheus" ) -var debugf = func(string, ...interface{}) {} +type command struct{} -func main() { - var cfg Config - var runOptions RunOptions +var Command = command{} - configPath := flag.String("config", defaultConfigPath, - "`path` of JSON or YAML configuration file") - serviceListPath := flag.String("config.KeepServiceList", "", - "`path` of JSON or YAML file with list of keep services to balance, as given by \"arv keep_service list\" "+ - "(default: config[\"KeepServiceList\"], or if none given, get all available services and filter by config[\"KeepServiceTypes\"])") - flag.BoolVar(&runOptions.Once, "once", false, +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, "balance once and then exit") - flag.BoolVar(&runOptions.CommitPulls, "commit-pulls", false, + flags.BoolVar(&options.CommitPulls, "commit-pulls", false, "send pull requests (make more replicas of blocks that are underreplicated or are not in optimal rendezvous probe order)") - flag.BoolVar(&runOptions.CommitTrash, "commit-trash", false, + flags.BoolVar(&options.CommitTrash, "commit-trash", false, "send trash requests (delete unreferenced old blocks, and excess replicas of overreplicated blocks)") - dumpConfig := flag.Bool("dump-config", false, "write current configuration to stdout and exit") - dumpFlag := flag.Bool("dump", false, "dump details for each block to stdout") - debugFlag := flag.Bool("debug", false, "enable debug messages") - getVersion := flag.Bool("version", false, "Print version information and exit.") - flag.Usage = usage - flag.Parse() + flags.BoolVar(&options.CommitConfirmedFields, "commit-confirmed-fields", true, + "update collection fields (replicas_confirmed, storage_classes_confirmed, etc.)") + // 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") - // Print version information if requested - if *getVersion { - fmt.Printf("keep-balance %s\n", version) - return + logger := ctxlog.New(stderr, "json", "info") + loader := config.NewLoader(&bytes.Buffer{}, logger) + loader.SetupFlags(flags) + munged := loader.MungeLegacyConfigArgs(logger, args, "-legacy-keepbalance-config") + if ok, code := cmd.ParseFlags(flags, prog, munged, "", stderr); !ok { + return code } - mustReadConfig(&cfg, *configPath) - if *serviceListPath != "" { - mustReadConfig(&cfg.KeepServiceList, *serviceListPath) + // Drop our custom args that would be rejected by the generic + // service.Command + args = nil + dropFlag := map[string]bool{ + "once": true, + "commit-pulls": true, + "commit-trash": true, + "commit-confirmed-fields": true, + "dump": true, } + flags.Visit(func(f *flag.Flag) { + if !dropFlag[f.Name] { + args = append(args, "-"+f.Name+"="+f.Value.String()) + } + }) - if *dumpConfig { - log.Fatal(config.DumpAndExit(cfg)) - } + return service.Command(arvados.ServiceNameKeepbalance, + func(ctx context.Context, cluster *arvados.Cluster, token string, registry *prometheus.Registry) service.Handler { + if !options.Once && cluster.Collections.BalancePeriod == arvados.Duration(0) { + return service.ErrorHandler(ctx, cluster, fmt.Errorf("cannot start service: Collections.BalancePeriod is zero (if you want to run once and then exit, use the -once flag)")) + } - to := time.Duration(cfg.RequestTimeout) - if to == 0 { - to = 30 * time.Minute - } - arvados.DefaultSecureClient.Timeout = to - arvados.InsecureHTTPClient.Timeout = to - http.DefaultClient.Timeout = to + ac, err := arvados.NewClientFromConfig(cluster) + ac.AuthToken = token + if err != nil { + return service.ErrorHandler(ctx, cluster, fmt.Errorf("error initializing client from cluster config: %s", err)) + } - log.Printf("keep-balance %s started", version) + db, err := sqlx.Open("postgres", cluster.PostgreSQL.Connection.String()) + if err != nil { + return service.ErrorHandler(ctx, cluster, fmt.Errorf("postgresql connection failed: %s", err)) + } + if p := cluster.PostgreSQL.ConnectionPool; p > 0 { + db.SetMaxOpenConns(p) + } + err = db.Ping() + if err != nil { + return service.ErrorHandler(ctx, cluster, fmt.Errorf("postgresql connection succeeded but ping failed: %s", err)) + } - if *debugFlag { - debugf = log.Printf - if j, err := json.Marshal(cfg); err != nil { - log.Fatal(err) - } else { - log.Printf("config is %s", j) - } - } - if *dumpFlag { - runOptions.Dumper = logrus.New() - runOptions.Dumper.Out = os.Stdout - runOptions.Dumper.Formatter = &logrus.TextFormatter{} - } - srv, err := NewServer(cfg, runOptions) - if err != nil { - // (don't run) - } else if runOptions.Once { - _, err = srv.Run() - } else { - err = srv.RunForever(nil) - } - if err != nil { - log.Fatal(err) - } -} + if options.Logger == nil { + options.Logger = ctxlog.FromContext(ctx) + } -func mustReadConfig(dst interface{}, path string) { - if err := config.LoadFile(dst, path); err != nil { - log.Fatal(err) - } + srv := &Server{ + Cluster: cluster, + ArvClient: ac, + RunOptions: options, + Metrics: newMetrics(registry), + Logger: options.Logger, + Dumper: options.Dumper, + DB: db, + } + srv.Handler = &health.Handler{ + Token: cluster.ManagementToken, + Prefix: "/_health/", + Routes: health.Routes{"ping": srv.CheckHealth}, + } + + go srv.run(ctx) + return srv + }).RunCommand(prog, args, stdin, stdout, stderr) }