package main
import (
- "bytes"
"flag"
"fmt"
- "git.curoverse.com/arvados.git/sdk/go/keepclient"
- "io/ioutil"
"log"
"net"
"net/http"
"os"
"os/signal"
- "strings"
"syscall"
"time"
-)
-
-// ======================
-// Configuration settings
-//
-// TODO(twp): make all of these configurable via command line flags
-// and/or configuration file settings.
-// Default TCP address on which to listen for requests.
-// Initialized by the --listen flag.
-const DefaultAddr = ":25107"
+ "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
+ "git.curoverse.com/arvados.git/sdk/go/config"
+ "git.curoverse.com/arvados.git/sdk/go/httpserver"
+ "git.curoverse.com/arvados.git/sdk/go/keepclient"
+ "github.com/coreos/go-systemd/daemon"
+ "github.com/ghodss/yaml"
+)
// A Keep "block" is 64MB.
const BlockSize = 64 * 1024 * 1024
// ProcMounts /proc/mounts
var ProcMounts = "/proc/mounts"
-// enforcePermissions controls whether permission signatures
-// should be enforced (affecting GET and DELETE requests).
-// Initialized by the -enforce-permissions flag.
-var enforcePermissions bool
-
-// blobSignatureTTL is the time duration for which new permission
-// signatures (returned by PUT requests) will be valid.
-// Initialized by the -permission-ttl flag.
-var blobSignatureTTL time.Duration
-
-// dataManagerToken represents the API token used by the
-// Data Manager, and is required on certain privileged operations.
-// Initialized by the -data-manager-token-file flag.
-var dataManagerToken string
-
-// neverDelete can be used to prevent the DELETE handler from
-// actually deleting anything.
-var neverDelete = true
-
-var maxBuffers = 128
var bufs *bufferPool
// KeepError types.
SizeRequiredError = &KeepError{411, "Missing Content-Length"}
TooLongError = &KeepError{413, "Block is too large"}
MethodDisabledError = &KeepError{405, "Method disabled"}
+ ErrNotImplemented = &KeepError{500, "Unsupported configuration"}
+ ErrClientDisconnect = &KeepError{503, "Client disconnected"}
)
func (e *KeepError) Error() string {
var pullq *WorkQueue
var trashq *WorkQueue
-type volumeSet []Volume
-
-var (
- flagSerializeIO bool
- flagReadonly bool
- volumes volumeSet
-)
+func main() {
+ deprecated.beforeFlagParse(theConfig)
-func (vs *volumeSet) String() string {
- return fmt.Sprintf("%+v", (*vs)[:])
-}
+ dumpConfig := flag.Bool("dump-config", false, "write current configuration to stdout and exit (useful for migrating from command line flags to config file)")
-// TODO(twp): continue moving as much code as possible out of main
-// so it can be effectively tested. Esp. handling and postprocessing
-// of command line flags (identifying Keep volumes and initializing
-// permission arguments).
+ defaultConfigPath := "/etc/arvados/keepstore/keepstore.yml"
+ var configPath string
+ flag.StringVar(
+ &configPath,
+ "config",
+ defaultConfigPath,
+ "YAML or JSON configuration file `path`")
+ flag.Usage = usage
+ flag.Parse()
-func main() {
- log.Println("keepstore starting, pid", os.Getpid())
- defer log.Println("keepstore exiting, pid", os.Getpid())
+ deprecated.afterFlagParse(theConfig)
- var (
- dataManagerTokenFile string
- listen string
- blobSigningKeyFile string
- permissionTTLSec int
- pidfile string
- )
- flag.StringVar(
- &dataManagerTokenFile,
- "data-manager-token-file",
- "",
- "File with the API token used by the Data Manager. All DELETE "+
- "requests or GET /index requests must carry this token.")
- flag.BoolVar(
- &enforcePermissions,
- "enforce-permissions",
- false,
- "Enforce permission signatures on requests.")
- flag.StringVar(
- &listen,
- "listen",
- DefaultAddr,
- "Listening address, in the form \"host:port\". e.g., 10.0.1.24:8000. Omit the host part to listen on all interfaces.")
- flag.BoolVar(
- &neverDelete,
- "never-delete",
- true,
- "If true, nothing will be deleted. "+
- "Warning: the relevant features in keepstore and data manager have not been extensively tested. "+
- "You should leave this option alone unless you can afford to lose data.")
- flag.StringVar(
- &blobSigningKeyFile,
- "permission-key-file",
- "",
- "Synonym for -blob-signing-key-file.")
- flag.StringVar(
- &blobSigningKeyFile,
- "blob-signing-key-file",
- "",
- "File containing the secret key for generating and verifying "+
- "blob permission signatures.")
- flag.IntVar(
- &permissionTTLSec,
- "permission-ttl",
- 0,
- "Synonym for -blob-signature-ttl.")
- flag.IntVar(
- &permissionTTLSec,
- "blob-signature-ttl",
- int(time.Duration(2*7*24*time.Hour).Seconds()),
- "Lifetime of blob permission signatures. "+
- "See services/api/config/application.default.yml.")
- flag.BoolVar(
- &flagSerializeIO,
- "serialize",
- false,
- "Serialize read and write operations on the following volumes.")
- flag.BoolVar(
- &flagReadonly,
- "readonly",
- false,
- "Do not write, delete, or touch anything on the following volumes.")
- flag.StringVar(
- &pidfile,
- "pid",
- "",
- "Path to write pid file during startup. This file is kept open and locked with LOCK_EX until keepstore exits, so `fuser -k pidfile` is one way to shut down. Exit immediately if there is an error opening, locking, or writing the pid file.")
- flag.IntVar(
- &maxBuffers,
- "max-buffers",
- maxBuffers,
- fmt.Sprintf("Maximum RAM to use for data buffers, given in multiples of block size (%d MiB). When this limit is reached, HTTP requests requiring buffers (like GET and PUT) will wait for buffer space to be released.", BlockSize>>20))
+ err := config.LoadFile(theConfig, configPath)
+ if err != nil && (!os.IsNotExist(err) || configPath != defaultConfigPath) {
+ log.Fatal(err)
+ }
- flag.Parse()
+ if *dumpConfig {
+ y, err := yaml.Marshal(theConfig)
+ if err != nil {
+ log.Fatal(err)
+ }
+ os.Stdout.Write(y)
+ os.Exit(0)
+ }
- if maxBuffers < 0 {
- log.Fatal("-max-buffers must be greater than zero.")
+ err = theConfig.Start()
+ if err != nil {
+ log.Fatal(err)
}
- bufs = newBufferPool(maxBuffers, BlockSize)
- if pidfile != "" {
+ if pidfile := theConfig.PIDFile; pidfile != "" {
f, err := os.OpenFile(pidfile, os.O_RDWR|os.O_CREATE, 0777)
if err != nil {
log.Fatalf("open pidfile (%s): %s", pidfile, err)
}
+ defer f.Close()
err = syscall.Flock(int(f.Fd()), syscall.LOCK_EX|syscall.LOCK_NB)
if err != nil {
log.Fatalf("flock pidfile (%s): %s", pidfile, err)
}
+ defer os.Remove(pidfile)
err = f.Truncate(0)
if err != nil {
log.Fatalf("truncate pidfile (%s): %s", pidfile, err)
if err != nil {
log.Fatalf("sync pidfile (%s): %s", pidfile, err)
}
- defer f.Close()
- defer os.Remove(pidfile)
- }
-
- if len(volumes) == 0 {
- if (&unixVolumeAdder{&volumes}).Discover() == 0 {
- log.Fatal("No volumes found.")
- }
- }
-
- for _, v := range volumes {
- log.Printf("Using volume %v (writable=%v)", v, v.Writable())
- }
-
- // Initialize data manager token and permission key.
- // If these tokens are specified but cannot be read,
- // raise a fatal error.
- if dataManagerTokenFile != "" {
- if buf, err := ioutil.ReadFile(dataManagerTokenFile); err == nil {
- dataManagerToken = strings.TrimSpace(string(buf))
- } else {
- log.Fatalf("reading data manager token: %s\n", err)
- }
}
- if neverDelete != true {
- log.Print("never-delete is not set. Warning: the relevant features in keepstore and data manager have not " +
- "been extensively tested. You should leave this option alone unless you can afford to lose data.")
- }
-
- if blobSigningKeyFile != "" {
- if buf, err := ioutil.ReadFile(blobSigningKeyFile); err == nil {
- PermissionSecret = bytes.TrimSpace(buf)
- } else {
- log.Fatalf("reading permission key: %s\n", err)
- }
- }
-
- blobSignatureTTL = time.Duration(permissionTTLSec) * time.Second
-
- if PermissionSecret == nil {
- if enforcePermissions {
- log.Fatal("-enforce-permissions requires a permission key")
- } else {
- log.Println("Running without a PermissionSecret. Block locators " +
- "returned by this server will not be signed, and will be rejected " +
- "by a server that enforces permissions.")
- log.Println("To fix this, use the -blob-signing-key-file flag " +
- "to specify the file containing the permission key.")
- }
- }
+ log.Println("keepstore starting, pid", os.Getpid())
+ defer log.Println("keepstore exiting, pid", os.Getpid())
// Start a round-robin VolumeManager with the volumes we have found.
- KeepVM = MakeRRVolumeManager(volumes)
+ KeepVM = MakeRRVolumeManager(theConfig.Volumes)
- // Tell the built-in HTTP server to direct all requests to the REST router.
- loggingRouter := MakeLoggingRESTRouter()
- http.HandleFunc("/", func(resp http.ResponseWriter, req *http.Request) {
- loggingRouter.ServeHTTP(resp, req)
+ // Middleware stack: logger, MaxRequests limiter, method handlers
+ http.Handle("/", &LoggingRESTRouter{
+ httpserver.NewRequestLimiter(theConfig.MaxRequests,
+ MakeRESTRouter()),
})
// Set up a TCP listener.
- listener, err := net.Listen("tcp", listen)
+ listener, err := net.Listen("tcp", theConfig.Listen)
if err != nil {
log.Fatal(err)
}
// Initialize Pull queue and worker
keepClient := &keepclient.KeepClient{
- Arvados: nil,
+ Arvados: &arvadosclient.ArvadosClient{},
Want_replicas: 1,
- Using_proxy: true,
Client: &http.Client{},
}
trashq = NewWorkQueue()
go RunTrashWorker(trashq)
+ // Start emptyTrash goroutine
+ doneEmptyingTrash := make(chan bool)
+ go emptyTrash(doneEmptyingTrash, theConfig.TrashCheckInterval.Duration())
+
// Shut down the server gracefully (by closing the listener)
// if SIGTERM is received.
term := make(chan os.Signal, 1)
go func(sig <-chan os.Signal) {
s := <-sig
log.Println("caught signal:", s)
+ doneEmptyingTrash <- true
listener.Close()
}(term)
signal.Notify(term, syscall.SIGTERM)
signal.Notify(term, syscall.SIGINT)
- log.Println("listening at", listen)
- srv := &http.Server{Addr: listen}
+ if _, err := daemon.SdNotify(false, "READY=1"); err != nil {
+ log.Printf("Error notifying init daemon: %v", err)
+ }
+ log.Println("listening at", listener.Addr())
+ srv := &http.Server{}
srv.Serve(listener)
}
+
+// Periodically (once per interval) invoke EmptyTrash on all volumes.
+func emptyTrash(done <-chan bool, interval time.Duration) {
+ ticker := time.NewTicker(interval)
+
+ for {
+ select {
+ case <-ticker.C:
+ for _, v := range theConfig.Volumes {
+ if v.Writable() {
+ v.EmptyTrash()
+ }
+ }
+ case <-done:
+ ticker.Stop()
+ return
+ }
+ }
+}
projects / arvados.git / blobdiff