10666: Formatting fixes.

[arvados.git] / services / keep-web / main.go

diff --git a/services/keep-web/main.go b/services/keep-web/main.go
index 751543e8fa81a0af389a5dcfc2c744a3c66ea503..724af27c7e0e746b44218f5269d23b71228e6655 100644 (file)
--- a/services/keep-web/main.go
+++ b/services/keep-web/main.go
@@ -1,29 +1,130 @@
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
 package main
 
 import (
        "flag"
+       "fmt"
        "log"
        "os"
+       "time"
+
+       "git.curoverse.com/arvados.git/sdk/go/arvados"
+       "git.curoverse.com/arvados.git/sdk/go/config"
+       "github.com/coreos/go-systemd/daemon"
+)
+
+var (
+       defaultConfigPath = "/etc/arvados/keep-web/keep-web.yml"
+       version           = "dev"
 )
 
+// Config specifies server configuration.
+type Config struct {
+       Client arvados.Client
+
+       Listen string
+
+       AnonymousTokens    []string
+       AttachmentOnlyHost string
+       TrustAllContent    bool
+
+       Cache cache
+
+       // Hack to support old command line flag, which is a bool
+       // meaning "get actual token from environment".
+       deprecatedAllowAnonymous bool
+
+       //Authorization token to be included in all health check requests.
+       ManagementToken string
+}
+
+// DefaultConfig returns the default configuration.
+func DefaultConfig() *Config {
+       return &Config{
+               Listen: ":80",
+               Cache: cache{
+                       TTL:                  arvados.Duration(5 * time.Minute),
+                       UUIDTTL:              arvados.Duration(5 * time.Second),
+                       MaxCollectionEntries: 1000,
+                       MaxCollectionBytes:   100000000,
+                       MaxPermissionEntries: 1000,
+                       MaxUUIDEntries:       1000,
+               },
+       }
+}
+
 func init() {
        // MakeArvadosClient returns an error if this env var isn't
        // available as a default token (even if we explicitly set a
        // different token before doing anything with the client). We
        // set this dummy value during init so it doesn't clobber the
        // one used by "run test servers".
-       os.Setenv("ARVADOS_API_TOKEN", "xxx")
+       if os.Getenv("ARVADOS_API_TOKEN") == "" {
+               os.Setenv("ARVADOS_API_TOKEN", "xxx")
+       }
 }
 
 func main() {
+       cfg := DefaultConfig()
+
+       var configPath string
+       deprecated := " (DEPRECATED -- use config file instead)"
+       flag.StringVar(&configPath, "config", defaultConfigPath,
+               "`path` to JSON or YAML configuration file")
+       flag.StringVar(&cfg.Listen, "listen", "",
+               "address:port or :port to listen on"+deprecated)
+       flag.BoolVar(&cfg.deprecatedAllowAnonymous, "allow-anonymous", false,
+               "Load an anonymous token from the ARVADOS_API_TOKEN environment variable"+deprecated)
+       flag.StringVar(&cfg.AttachmentOnlyHost, "attachment-only-host", "",
+               "Only serve attachments at the given `host:port`"+deprecated)
+       flag.BoolVar(&cfg.TrustAllContent, "trust-all-content", false,
+               "Serve non-public content from a single origin. Dangerous: read docs before using!"+deprecated)
+       flag.StringVar(&cfg.ManagementToken, "management-token", "",
+               "Authorization token to be included in all health check requests.")
+
+       dumpConfig := flag.Bool("dump-config", false,
+               "write current configuration to stdout and exit")
+       getVersion := flag.Bool("version", false,
+               "print version information and exit.")
+       flag.Usage = usage
        flag.Parse()
-       if os.Getenv("ARVADOS_API_HOST") == "" {
-               log.Fatal("ARVADOS_API_HOST environment variable must be set.")
+
+       // Print version information if requested
+       if *getVersion {
+               fmt.Printf("keep-web %s\n", version)
+               return
+       }
+
+       if err := config.LoadFile(cfg, configPath); err != nil {
+               if h := os.Getenv("ARVADOS_API_HOST"); h != "" && configPath == defaultConfigPath {
+                       log.Printf("DEPRECATED: Using ARVADOS_API_HOST environment variable. Use config file instead.")
+                       cfg.Client.APIHost = h
+               } else {
+                       log.Fatal(err)
+               }
        }
-       srv := &server{}
+       if cfg.deprecatedAllowAnonymous {
+               log.Printf("DEPRECATED: Using -allow-anonymous command line flag with ARVADOS_API_TOKEN environment variable. Use config file instead.")
+               cfg.AnonymousTokens = []string{os.Getenv("ARVADOS_API_TOKEN")}
+       }
+
+       if *dumpConfig {
+               log.Fatal(config.DumpAndExit(cfg))
+       }
+
+       log.Printf("keep-web %s started", version)
+
+       os.Setenv("ARVADOS_API_HOST", cfg.Client.APIHost)
+       srv := &server{Config: cfg}
        if err := srv.Start(); err != nil {
                log.Fatal(err)
        }
+       if _, err := daemon.SdNotify(false, "READY=1"); err != nil {
+               log.Printf("Error notifying init daemon: %v", err)
+       }
        log.Println("Listening at", srv.Addr)
        if err := srv.Wait(); err != nil {
                log.Fatal(err)