1 // Copyright (C) The Arvados Authors. All rights reserved.
3 // SPDX-License-Identifier: AGPL-3.0
17 "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
18 "git.curoverse.com/arvados.git/sdk/go/config"
19 "git.curoverse.com/arvados.git/sdk/go/keepclient"
20 "github.com/coreos/go-systemd/daemon"
25 // A Keep "block" is 64MB.
26 const BlockSize = 64 * 1024 * 1024
28 // A Keep volume must have at least MinFreeKilobytes available
29 // in order to permit writes.
30 const MinFreeKilobytes = BlockSize / 1024
32 // ProcMounts /proc/mounts
33 var ProcMounts = "/proc/mounts"
39 type KeepError struct {
45 BadRequestError = &KeepError{400, "Bad Request"}
46 UnauthorizedError = &KeepError{401, "Unauthorized"}
47 CollisionError = &KeepError{500, "Collision"}
48 RequestHashError = &KeepError{422, "Hash mismatch in request"}
49 PermissionError = &KeepError{403, "Forbidden"}
50 DiskHashError = &KeepError{500, "Hash mismatch in stored data"}
51 ExpiredError = &KeepError{401, "Expired permission signature"}
52 NotFoundError = &KeepError{404, "Not Found"}
53 GenericError = &KeepError{500, "Fail"}
54 FullError = &KeepError{503, "Full"}
55 SizeRequiredError = &KeepError{411, "Missing Content-Length"}
56 TooLongError = &KeepError{413, "Block is too large"}
57 MethodDisabledError = &KeepError{405, "Method disabled"}
58 ErrNotImplemented = &KeepError{500, "Unsupported configuration"}
59 ErrClientDisconnect = &KeepError{503, "Client disconnected"}
62 func (e *KeepError) Error() string {
66 // ========================
67 // Internal data structures
69 // These global variables are used by multiple parts of the
70 // program. They are good candidates for moving into their own
73 // The Keep VolumeManager maintains a list of available volumes.
74 // Initialized by the --volumes flag (or by FindKeepVolumes).
75 var KeepVM VolumeManager
77 // The pull list manager and trash queue are threadsafe queues which
78 // support atomic update operations. The PullHandler and TrashHandler
79 // store results from Data Manager /pull and /trash requests here.
81 // See the Keep and Data Manager design documents for more details:
82 // https://arvados.org/projects/arvados/wiki/Keep_Design_Doc
83 // https://arvados.org/projects/arvados/wiki/Data_Manager_Design_Doc
89 deprecated.beforeFlagParse(theConfig)
91 dumpConfig := flag.Bool("dump-config", false, "write current configuration to stdout and exit (useful for migrating from command line flags to config file)")
92 getVersion := flag.Bool("version", false, "Print version information and exit.")
94 defaultConfigPath := "/etc/arvados/keepstore/keepstore.yml"
100 "YAML or JSON configuration file `path`")
104 // Print version information if requested
106 fmt.Printf("keepstore %s\n", version)
110 deprecated.afterFlagParse(theConfig)
112 err := config.LoadFile(theConfig, configPath)
113 if err != nil && (!os.IsNotExist(err) || configPath != defaultConfigPath) {
118 log.Fatal(config.DumpAndExit(theConfig))
121 log.Printf("keepstore %s started", version)
123 err = theConfig.Start()
128 if pidfile := theConfig.PIDFile; pidfile != "" {
129 f, err := os.OpenFile(pidfile, os.O_RDWR|os.O_CREATE, 0777)
131 log.Fatalf("open pidfile (%s): %s", pidfile, err)
134 err = syscall.Flock(int(f.Fd()), syscall.LOCK_EX|syscall.LOCK_NB)
136 log.Fatalf("flock pidfile (%s): %s", pidfile, err)
138 defer os.Remove(pidfile)
141 log.Fatalf("truncate pidfile (%s): %s", pidfile, err)
143 _, err = fmt.Fprint(f, os.Getpid())
145 log.Fatalf("write pidfile (%s): %s", pidfile, err)
149 log.Fatalf("sync pidfile (%s): %s", pidfile, err)
153 log.Println("keepstore starting, pid", os.Getpid())
154 defer log.Println("keepstore exiting, pid", os.Getpid())
156 // Start a round-robin VolumeManager with the volumes we have found.
157 KeepVM = MakeRRVolumeManager(theConfig.Volumes)
159 // Middleware/handler stack
160 router := MakeRESTRouter()
162 // Set up a TCP listener.
163 listener, err := net.Listen("tcp", theConfig.Listen)
168 // Initialize Pull queue and worker
169 keepClient := &keepclient.KeepClient{
170 Arvados: &arvadosclient.ArvadosClient{},
174 // Initialize the pullq and worker
175 pullq = NewWorkQueue()
176 go RunPullWorker(pullq, keepClient)
178 // Initialize the trashq and worker
179 trashq = NewWorkQueue()
180 go RunTrashWorker(trashq)
182 // Start emptyTrash goroutine
183 doneEmptyingTrash := make(chan bool)
184 go emptyTrash(doneEmptyingTrash, theConfig.TrashCheckInterval.Duration())
186 // Shut down the server gracefully (by closing the listener)
187 // if SIGTERM is received.
188 term := make(chan os.Signal, 1)
189 go func(sig <-chan os.Signal) {
191 log.Println("caught signal:", s)
192 doneEmptyingTrash <- true
195 signal.Notify(term, syscall.SIGTERM)
196 signal.Notify(term, syscall.SIGINT)
198 if _, err := daemon.SdNotify(false, "READY=1"); err != nil {
199 log.Printf("Error notifying init daemon: %v", err)
201 log.Println("listening at", listener.Addr())
202 srv := &http.Server{Handler: router}
206 // Periodically (once per interval) invoke EmptyTrash on all volumes.
207 func emptyTrash(done <-chan bool, interval time.Duration) {
208 ticker := time.NewTicker(interval)
213 for _, v := range theConfig.Volumes {