func newMongoIndexFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
blobPrefix := config.RequiredString("blobSource")
mgw := &MongoWrapper{
Servers: config.OptionalString("host", "localhost"),
Database: config.RequiredString("database"),
User: config.OptionalString("user", ""),
Password: config.OptionalString("password", ""),
Collection: collectionName,
}
if err := config.Validate(); err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
return nil, err
}
ix, err := newMongoIndex(mgw)
if err != nil {
return nil, err
}
ix.BlobSource = sto
// Good enough, for now:
ix.KeyFetcher = ix.BlobSource
if wipe, _ := strconv.ParseBool(os.Getenv("CAMLI_MONGO_WIPE")); wipe {
err = ix.Storage().Delete("")
if err != nil {
return nil, err
}
}
return ix, err
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (storage blobserver.Storage, err error) {
sto := &replicaStorage{
replicaPrefixes: config.RequiredList("backends"),
}
nReplicas := len(sto.replicaPrefixes)
sto.minWritesForSuccess = config.OptionalInt("minWritesForSuccess", nReplicas)
if err := config.Validate(); err != nil {
return nil, err
}
if nReplicas == 0 {
return nil, errors.New("replica: need at least one replica")
}
if sto.minWritesForSuccess == 0 {
sto.minWritesForSuccess = nReplicas
}
sto.replicas = make([]blobserver.Storage, nReplicas)
for i, prefix := range sto.replicaPrefixes {
replicaSto, err := ld.GetStorage(prefix)
if err != nil {
return nil, err
}
sto.replicas[i] = replicaSto
}
return sto, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (bs blobserver.Storage, err error) {
sto := &storage{
SimpleBlobHubPartitionMap: &blobserver.SimpleBlobHubPartitionMap{},
}
key := config.OptionalString("key", "")
keyFile := config.OptionalString("keyFile", "")
switch {
case key != "":
sto.key = []byte(key)
case keyFile != "":
// TODO: check that keyFile's unix permissions aren't too permissive.
sto.key, err = ioutil.ReadFile(keyFile)
if err != nil {
return
}
}
sto.blobs, err = ld.GetStorage(config.RequiredString("blobs"))
if err != nil {
return
}
sto.meta, err = ld.GetStorage(config.RequiredString("meta"))
if err != nil {
return
}
if err := config.Validate(); err != nil {
return nil, err
}
if sto.key == nil {
// TODO: add a way to prompt from stdin on start? or keychain support?
return nil, errors.New("no encryption key set with 'key' or 'keyFile'")
}
return sto, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
blobPrefix := config.RequiredString("blobSource")
kvConfig := config.RequiredObject("storage")
if err := config.Validate(); err != nil {
return nil, err
}
kv, err := sorted.NewKeyValue(kvConfig)
if err != nil {
return nil, err
}
ix, err := New(kv)
if err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
ix.Close()
return nil, err
}
ix.BlobSource = sto
// Good enough, for now:
ix.KeyFetcher = ix.BlobSource
return ix, err
}
func newRootFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Handler, err error) {
u, err := user.Current()
if err != nil {
return
}
root := &RootHandler{
BlobRoot: conf.OptionalString("blobRoot", ""),
SearchRoot: conf.OptionalString("searchRoot", ""),
OwnerName: conf.OptionalString("ownerName", u.Name),
}
root.Stealth = conf.OptionalBool("stealth", false)
if err = conf.Validate(); err != nil {
return
}
if root.BlobRoot != "" {
bs, err := ld.GetStorage(root.BlobRoot)
if err != nil {
return nil, fmt.Errorf("Root handler's blobRoot of %q error: %v", root.BlobRoot, err)
}
root.Storage = bs
}
if root.SearchRoot != "" {
h, _ := ld.GetHandler(root.SearchRoot)
root.Search = h.(*search.Handler)
}
return root, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
blobPrefix := config.RequiredString("blobSource")
kvConfig := config.RequiredObject("storage")
if err := config.Validate(); err != nil {
return nil, err
}
kv, err := sorted.NewKeyValue(kvConfig)
if err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
return nil, err
}
ix, err := New(kv)
// TODO(mpl): next time we need to do another fix, make a new error
// type that lets us apply the needed fix depending on its value or
// something. For now just one value/fix.
if err == errMissingWholeRef {
// TODO: maybe we don't want to do that automatically. Brad says
// we have to think about the case on GCE/CoreOS in particular.
if err := ix.fixMissingWholeRef(sto); err != nil {
ix.Close()
return nil, fmt.Errorf("could not fix missing wholeRef entries: %v", err)
}
ix, err = New(kv)
}
if err != nil {
return nil, err
}
ix.InitBlobSource(sto)
return ix, err
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (storage blobserver.Storage, err error) {
var (
origin = config.RequiredString("origin")
cache = config.RequiredString("cache")
kvConf = config.RequiredObject("meta")
maxCacheBytes = config.OptionalInt64("maxCacheBytes", 512<<20)
)
if err := config.Validate(); err != nil {
return nil, err
}
cacheSto, err := ld.GetStorage(cache)
if err != nil {
return nil, err
}
originSto, err := ld.GetStorage(origin)
if err != nil {
return nil, err
}
kv, err := sorted.NewKeyValue(kvConf)
if err != nil {
return nil, err
}
// TODO: enumerate through kv and calculate current size.
// Maybe also even enumerate through cache to see if they match.
// Or even: keep it only in memory and not in kv?
s := &sto{
origin: originSto,
cache: cacheSto,
maxCacheBytes: maxCacheBytes,
kv: kv,
}
return s, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
blobPrefix := config.RequiredString("blobSource")
postgresConf, err := postgres.ConfigFromJSON(config)
if err != nil {
return nil, err
}
kv, err := postgres.NewKeyValue(postgresConf)
if err != nil {
return nil, err
}
ix, err := index.New(kv)
if err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
ix.Close()
return nil, err
}
ix.BlobSource = sto
// Good enough, for now:
ix.KeyFetcher = ix.BlobSource
return ix, nil
}
func indexFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (storage blobserver.Storage, err error) {
is := &indexStorage{}
var (
blobPrefix = config.RequiredString("blobSource")
ns = config.OptionalString("namespace", "")
)
if err := config.Validate(); err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
return nil, err
}
is.ns, err = sanitizeNamespace(ns)
if err != nil {
return nil, err
}
ix, err := index.New(is)
if err != nil {
return nil, err
}
ix.BlobSource = sto
ix.KeyFetcher = ix.BlobSource // TODO(bradfitz): global search? something else?
return ix, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
blobPrefix := config.RequiredString("blobSource")
file := config.RequiredString("file")
if err := config.Validate(); err != nil {
return nil, err
}
is, closer, err := NewStorage(file)
if err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
closer.Close()
return nil, err
}
ix := index.New(is)
if err != nil {
return nil, err
}
ix.BlobSource = sto
// Good enough, for now:
ix.KeyFetcher = ix.BlobSource
return ix, err
}
func newFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (storage blobserver.Storage, err error) {
sto := &condStorage{}
receive := conf.OptionalStringOrObject("write")
read := conf.RequiredString("read")
remove := conf.OptionalString("remove", "")
if err := conf.Validate(); err != nil {
return nil, err
}
if receive != nil {
sto.storageForReceive, err = buildStorageForReceive(ld, receive)
if err != nil {
return
}
}
sto.read, err = ld.GetStorage(read)
if err != nil {
return
}
if remove != "" {
sto.remove, err = ld.GetStorage(remove)
if err != nil {
return
}
}
return sto, nil
}
func newSyncFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Handler, err error) {
from := conf.RequiredString("from")
to := conf.RequiredString("to")
fullSync := conf.OptionalBool("fullSyncOnStart", false)
blockFullSync := conf.OptionalBool("blockingFullSyncOnStart", false)
if err = conf.Validate(); err != nil {
return
}
fromBs, err := ld.GetStorage(from)
if err != nil {
return
}
toBs, err := ld.GetStorage(to)
if err != nil {
return
}
fromQsc, ok := fromBs.(blobserver.StorageQueueCreator)
if !ok {
return nil, fmt.Errorf("Prefix %s (type %T) does not support being efficient replication source (queueing)", from, fromBs)
}
synch, err := createSyncHandler(from, to, fromQsc, toBs)
if err != nil {
return
}
if fullSync || blockFullSync {
didFullSync := make(chan bool, 1)
go func() {
n := synch.runSync("queue", fromQsc, 0)
log.Printf("Queue sync copied %d blobs", n)
n = synch.runSync("full", fromBs, 0)
log.Printf("Full sync copied %d blobs", n)
didFullSync <- true
synch.syncQueueLoop()
}()
if blockFullSync {
log.Printf("Blocking startup, waiting for full sync from %q to %q", from, to)
<-didFullSync
log.Printf("Full sync complete.")
}
} else {
go synch.syncQueueLoop()
}
rootPrefix, _, err := ld.FindHandlerByType("root")
switch err {
case blobserver.ErrHandlerTypeNotFound:
// ignore; okay to not have a root handler.
case nil:
h, err := ld.GetHandler(rootPrefix)
if err != nil {
return nil, err
}
h.(*RootHandler).registerSyncHandler(synch)
default:
return nil, fmt.Errorf("Error looking for root handler: %v", err)
}
return synch, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (bs blobserver.Storage, err error) {
sto := &storage{
SimpleBlobHubPartitionMap: &blobserver.SimpleBlobHubPartitionMap{},
index: index.NewMemoryStorage(), // TODO: temporary for development; let be configurable (mysql, etc)
}
agreement := config.OptionalString("I_AGREE", "")
const wantAgreement = "that encryption support hasn't been peer-reviewed, isn't finished, and its format might change."
if agreement != wantAgreement {
return nil, errors.New("Use of the 'encrypt' target without the proper I_AGREE value.")
}
key := config.OptionalString("key", "")
keyFile := config.OptionalString("keyFile", "")
var keyb []byte
switch {
case key != "":
keyb, err = hex.DecodeString(key)
if err != nil || len(keyb) != 16 {
return nil, fmt.Errorf("The 'key' parameter must be 16 bytes of 32 hex digits. (currently fixed at AES-128)")
}
case keyFile != "":
// TODO: check that keyFile's unix permissions aren't too permissive.
keyb, err = ioutil.ReadFile(keyFile)
if err != nil {
return nil, fmt.Errorf("Reading key file %v: %v", keyFile, err)
}
}
blobStorage := config.RequiredString("blobs")
metaStorage := config.RequiredString("meta")
if err := config.Validate(); err != nil {
return nil, err
}
sto.blobs, err = ld.GetStorage(blobStorage)
if err != nil {
return
}
sto.meta, err = ld.GetStorage(metaStorage)
if err != nil {
return
}
if keyb == nil {
// TODO: add a way to prompt from stdin on start? or keychain support?
return nil, errors.New("no encryption key set with 'key' or 'keyFile'")
}
if err := sto.setKey(keyb); err != nil {
return nil, err
}
log.Printf("Reading encryption metadata...")
if err := sto.readAllMetaBlobs(); err != nil {
return nil, fmt.Errorf("Error scanning metadata on start-up: %v", err)
}
log.Printf("Read all encryption metadata.")
return sto, nil
}
func newFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (blobserver.Storage, error) {
var (
smallPrefix = conf.RequiredString("smallBlobs")
largePrefix = conf.RequiredString("largeBlobs")
metaConf = conf.RequiredObject("metaIndex")
)
if err := conf.Validate(); err != nil {
return nil, err
}
small, err := ld.GetStorage(smallPrefix)
if err != nil {
return nil, fmt.Errorf("failed to load smallBlobs at %s: %v", smallPrefix, err)
}
large, err := ld.GetStorage(largePrefix)
if err != nil {
return nil, fmt.Errorf("failed to load largeBlobs at %s: %v", largePrefix, err)
}
largeSubber, ok := large.(subFetcherStorage)
if !ok {
return nil, fmt.Errorf("largeBlobs at %q of type %T doesn't support fetching sub-ranges of blobs",
largePrefix, large)
}
meta, err := sorted.NewKeyValue(metaConf)
if err != nil {
return nil, fmt.Errorf("failed to setup blobpacked metaIndex: %v", err)
}
sto := &storage{
small: small,
large: largeSubber,
meta: meta,
}
sto.init()
recoveryMu.Lock()
defer recoveryMu.Unlock()
if recovery {
log.Print("Starting recovery of blobpacked index")
if err := meta.Close(); err != nil {
return nil, err
}
if err := sto.reindex(context.TODO(), func() (sorted.KeyValue, error) {
return sorted.NewKeyValue(metaConf)
}); err != nil {
return nil, err
}
return sto, nil
}
// Check for a weird state: zip files exist, but no metadata about them
// is recorded. This is probably a corrupt state, and the user likely
// wants to recover.
if !sto.anyMeta() && sto.anyZipPacks() {
log.Fatal("Error: blobpacked storage detects non-zero packed zips, but no metadata. Please re-start in recovery mode with -recovery.")
}
return sto, nil
}
func newFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (blobserver.Storage, error) {
var (
smallPrefix = conf.RequiredString("smallBlobs")
largePrefix = conf.RequiredString("largeBlobs")
metaConf = conf.RequiredObject("metaIndex")
)
if err := conf.Validate(); err != nil {
return nil, err
}
small, err := ld.GetStorage(smallPrefix)
if err != nil {
return nil, fmt.Errorf("failed to load smallBlobs at %s: %v", smallPrefix, err)
}
large, err := ld.GetStorage(largePrefix)
if err != nil {
return nil, fmt.Errorf("failed to load largeBlobs at %s: %v", largePrefix, err)
}
largeSubber, ok := large.(subFetcherStorage)
if !ok {
return nil, fmt.Errorf("largeBlobs at %q of type %T doesn't support fetching sub-ranges of blobs",
largePrefix, large)
}
meta, err := sorted.NewKeyValue(metaConf)
if err != nil {
return nil, fmt.Errorf("failed to setup blobpacked metaIndex: %v", err)
}
sto := &storage{
small: small,
large: largeSubber,
meta: meta,
}
sto.init()
// Check for a weird state: zip files exist, but no metadata about them
// is recorded. This is probably a corrupt state, and the user likely
// wants to recover.
if !sto.anyMeta() && sto.anyZipPacks() {
log.Printf("Warning: blobpacked storage detects non-zero packed zips, but no metadata. Please re-start in recovery mode.")
// TODO: add a recovery mode.
// Old TODO was:
// fail with a "known corrupt" message and refuse to
// start unless in recovery mode (perhaps a new environment
// var? or flag passed down?) using StreamBlobs starting at
// "l:". Could even do it automatically if total size is
// small or fast enough? But that's confusing if it only
// sometimes finishes recovery. We probably want various
// server start-up modes anyway: "check", "recover", "garbage
// collect", "readonly". So might as well introduce that
// concept now.
// TODO: test start-up recovery mode, once it works.
}
return sto, nil
}
func newJSONSignFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (http.Handler, error) {
pubKeyDestPrefix := conf.OptionalString("publicKeyDest", "")
// either a short form ("26F5ABDA") or one the longer forms.
keyId := conf.RequiredString("keyId")
h := &Handler{
secretRing: conf.OptionalString("secretRing", ""),
}
var err error
if err = conf.Validate(); err != nil {
return nil, err
}
h.entity, err = jsonsign.EntityFromSecring(keyId, h.secretRingPath())
if err != nil {
return nil, err
}
armoredPublicKey, err := jsonsign.ArmoredPublicKey(h.entity)
ms := new(blobref.MemoryStore)
h.pubKeyBlobRef, err = ms.AddBlob(crypto.SHA1, armoredPublicKey)
if err != nil {
return nil, err
}
h.pubKeyFetcher = ms
if pubKeyDestPrefix != "" {
sto, err := ld.GetStorage(pubKeyDestPrefix)
if err != nil {
return nil, err
}
h.pubKeyDest = sto
if sto != nil {
if ctxReq, ok := ld.GetRequestContext(); ok {
if w, ok := sto.(blobserver.ContextWrapper); ok {
sto = w.WrapContext(ctxReq)
}
}
err := h.uploadPublicKey(sto, armoredPublicKey)
if err != nil {
return nil, fmt.Errorf("Error seeding self public key in storage: %v", err)
}
}
}
h.pubKeyBlobRefServeSuffix = "camli/" + h.pubKeyBlobRef.String()
h.pubKeyHandler = &gethandler.Handler{
Fetcher: ms,
AllowGlobalAccess: true, // just public keys
}
return h, nil
}
func newJSONSignFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (http.Handler, error) {
pubKeyDestPrefix := conf.OptionalString("publicKeyDest", "")
// either a short form ("26F5ABDA") or one the longer forms.
keyId := conf.RequiredString("keyId")
h := &Handler{
secretRing: conf.OptionalString("secretRing", ""),
}
var err error
if err = conf.Validate(); err != nil {
return nil, err
}
h.entity, err = jsonsign.EntityFromSecring(keyId, h.secretRingPath())
if err != nil {
return nil, err
}
armoredPublicKey, err := jsonsign.ArmoredPublicKey(h.entity)
ms := new(blob.MemoryStore)
h.pubKeyBlobRef, err = ms.AddBlob(crypto.SHA1, armoredPublicKey)
if err != nil {
return nil, err
}
h.pubKeyFetcher = ms
if pubKeyDestPrefix != "" {
sto, err := ld.GetStorage(pubKeyDestPrefix)
if err != nil {
return nil, err
}
h.pubKeyDest = sto
if sto != nil {
err := h.uploadPublicKey(sto, armoredPublicKey)
if err != nil {
return nil, fmt.Errorf("Error seeding self public key in storage: %v", err)
}
}
}
h.pubKeyBlobRefServeSuffix = "camli/" + h.pubKeyBlobRef.String()
h.pubKeyHandler = &gethandler.Handler{
Fetcher: ms,
}
h.signer, err = schema.NewSigner(h.pubKeyBlobRef, strings.NewReader(armoredPublicKey), h.entity)
if err != nil {
return nil, err
}
return h, nil
}
func newJSONSignFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (http.Handler, error) {
var (
// either a short form ("26F5ABDA") or one the longer forms.
keyId = conf.RequiredString("keyId")
pubKeyDestPrefix = conf.OptionalString("publicKeyDest", "")
secretRing = conf.OptionalString("secretRing", "")
)
if err := conf.Validate(); err != nil {
return nil, err
}
h := &Handler{
secretRing: secretRing,
}
var err error
h.entity, err = jsonsign.EntityFromSecring(keyId, h.secretRingPath())
if err != nil {
return nil, err
}
h.pubKey, err = jsonsign.ArmoredPublicKey(h.entity)
ms := &memory.Storage{}
h.pubKeyBlobRef = blob.SHA1FromString(h.pubKey)
if _, err := ms.ReceiveBlob(h.pubKeyBlobRef, strings.NewReader(h.pubKey)); err != nil {
return nil, fmt.Errorf("could not store pub key blob: %v", err)
}
h.pubKeyFetcher = ms
if pubKeyDestPrefix != "" {
sto, err := ld.GetStorage(pubKeyDestPrefix)
if err != nil {
return nil, err
}
h.pubKeyDest = sto
}
h.pubKeyBlobRefServeSuffix = "camli/" + h.pubKeyBlobRef.String()
h.pubKeyHandler = &gethandler.Handler{
Fetcher: ms,
}
h.signer, err = schema.NewSigner(h.pubKeyBlobRef, strings.NewReader(h.pubKey), h.entity)
if err != nil {
return nil, err
}
return h, nil
}
func newMemoryIndexFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
blobPrefix := config.RequiredString("blobSource")
if err := config.Validate(); err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
return nil, err
}
ix := NewMemoryIndex()
ix.InitBlobSource(sto)
return ix, err
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
var (
blobPrefix = config.RequiredString("blobSource")
file = config.RequiredString("file")
)
if err := config.Validate(); err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
return nil, err
}
fi, err := os.Stat(file)
if os.IsNotExist(err) || (err == nil && fi.Size() == 0) {
return nil, fmt.Errorf(`You need to initialize your SQLite index database with: camtool dbinit --dbname=%s --dbtype=sqlite`, file)
}
isto, err := NewStorage(file)
if err != nil {
return nil, err
}
is := isto.(*storage)
version, err := is.SchemaVersion()
if err != nil {
return nil, fmt.Errorf("error getting schema version (need to init database with 'camtool dbinit %s'?): %v", file, err)
}
if err := is.ping(); err != nil {
return nil, err
}
if version != requiredSchemaVersion {
if os.Getenv("CAMLI_ADVERTISED_PASSWORD") != "" {
// Good signal that we're using the dev-server script, so help out
// the user with a more useful tip:
return nil, fmt.Errorf("database schema version is %d; expect %d (run \"./dev-server --wipe\" to wipe both your blobs and re-populate the database schema)", version, requiredSchemaVersion)
}
return nil, fmt.Errorf("database schema version is %d; expect %d (need to re-init/upgrade database?)",
version, requiredSchemaVersion)
}
ix := index.New(is)
ix.BlobSource = sto
// Good enough, for now:
ix.KeyFetcher = ix.BlobSource
return ix, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
var (
blobPrefix = config.RequiredString("blobSource")
host = config.OptionalString("host", "localhost")
user = config.RequiredString("user")
password = config.OptionalString("password", "")
database = config.RequiredString("database")
)
if err := config.Validate(); err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
return nil, err
}
isto, err := NewStorage(host, user, password, database)
if err != nil {
return nil, err
}
is := isto.(*myIndexStorage)
if err := is.ping(); err != nil {
return nil, err
}
version, err := is.SchemaVersion()
if err != nil {
return nil, fmt.Errorf("error getting schema version (need to init database?): %v", err)
}
if version != requiredSchemaVersion {
if version == 20 && requiredSchemaVersion == 21 {
fmt.Fprintf(os.Stderr, fixSchema20to21)
}
if os.Getenv("CAMLI_DEV_CAMLI_ROOT") != "" {
// Good signal that we're using the devcam server, so help out
// the user with a more useful tip:
return nil, fmt.Errorf("database schema version is %d; expect %d (run \"devcam server --wipe\" to wipe both your blobs and re-populate the database schema)", version, requiredSchemaVersion)
}
return nil, fmt.Errorf("database schema version is %d; expect %d (need to re-init/upgrade database?)",
version, requiredSchemaVersion)
}
ix := index.New(is)
ix.BlobSource = sto
// Good enough, for now:
ix.KeyFetcher = ix.BlobSource
return ix, nil
}
func newRootFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Handler, err error) {
username, _ := getUserName()
root := &RootHandler{
BlobRoot: conf.OptionalString("blobRoot", ""),
SearchRoot: conf.OptionalString("searchRoot", ""),
OwnerName: conf.OptionalString("ownerName", username),
Username: osutil.Username(),
Prefix: ld.MyPrefix(),
}
root.Stealth = conf.OptionalBool("stealth", false)
root.statusRoot = conf.OptionalString("statusRoot", "")
if err = conf.Validate(); err != nil {
return
}
if root.BlobRoot != "" {
bs, err := ld.GetStorage(root.BlobRoot)
if err != nil {
return nil, fmt.Errorf("Root handler's blobRoot of %q error: %v", root.BlobRoot, err)
}
root.Storage = bs
}
root.searchInit = func() {}
if root.SearchRoot != "" {
prefix := root.SearchRoot
if t := ld.GetHandlerType(prefix); t != "search" {
if t == "" {
return nil, fmt.Errorf("root handler's searchRoot of %q is invalid and doesn't refer to a declared handler", prefix)
}
return nil, fmt.Errorf("root handler's searchRoot of %q is of type %q, not %q", prefix, t, "search")
}
root.searchInit = func() {
h, err := ld.GetHandler(prefix)
if err != nil {
log.Fatalf("Error fetching SearchRoot at %q: %v", prefix, err)
}
root.searchHandler = h.(*search.Handler)
root.searchInit = nil
}
}
if pfx, _, _ := ld.FindHandlerByType("importer"); err == nil {
root.importerRoot = pfx
}
return root, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (storage blobserver.Storage, err error) {
sto := &nsto{}
invConf := config.RequiredObject("inventory")
masterName := config.RequiredString("storage")
if err := config.Validate(); err != nil {
return nil, err
}
sto.inventory, err = sorted.NewKeyValue(invConf)
if err != nil {
return nil, fmt.Errorf("Invalid 'inventory' configuration: %v", err)
}
sto.master, err = ld.GetStorage(masterName)
if err != nil {
return nil, fmt.Errorf("Invalid 'storage' configuration: %v", err)
}
return sto, nil
}
func newSyncFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Handler, err error) {
from := conf.RequiredString("from")
to := conf.RequiredString("to")
fullSync := conf.OptionalBool("fullSyncOnStart", false)
blockFullSync := conf.OptionalBool("blockingFullSyncOnStart", false)
if err = conf.Validate(); err != nil {
return
}
fromBs, err := ld.GetStorage(from)
if err != nil {
return
}
toBs, err := ld.GetStorage(to)
if err != nil {
return
}
fromQsc, ok := fromBs.(blobserver.StorageQueueCreator)
if !ok {
return nil, fmt.Errorf("Prefix %s (type %T) does not support being efficient replication source (queueing)", from, fromBs)
}
synch, err := createSyncHandler(from, to, fromQsc, toBs)
if err != nil {
return
}
if fullSync || blockFullSync {
didFullSync := make(chan bool, 1)
go func() {
n := synch.runSync("queue", fromQsc, 0)
log.Printf("Queue sync copied %d blobs", n)
n = synch.runSync("full", fromBs, 0)
log.Printf("Full sync copied %d blobs", n)
didFullSync <- true
synch.syncQueueLoop()
}()
if blockFullSync {
log.Printf("Blocking startup, waiting for full sync from %q to %q", from, to)
<-didFullSync
log.Printf("Full sync complete.")
}
} else {
go synch.syncQueueLoop()
}
return synch, nil
}
func newMemoryIndexFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (blobserver.Storage, error) {
blobPrefix := config.RequiredString("blobSource")
if err := config.Validate(); err != nil {
return nil, err
}
sto, err := ld.GetStorage(blobPrefix)
if err != nil {
return nil, err
}
ix := NewMemoryIndex()
ix.BlobSource = sto
// Good enough, for now:
ix.KeyFetcher = ix.BlobSource
return ix, err
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (storage blobserver.Storage, err error) {
sto := &replicaStorage{
replicaPrefixes: config.RequiredList("backends"),
readPrefixes: config.OptionalList("readBackends"),
}
nReplicas := len(sto.replicaPrefixes)
sto.minWritesForSuccess = config.OptionalInt("minWritesForSuccess", nReplicas)
if err := config.Validate(); err != nil {
return nil, err
}
if nReplicas == 0 {
return nil, errors.New("replica: need at least one replica")
}
if sto.minWritesForSuccess == 0 {
sto.minWritesForSuccess = nReplicas
}
// readPrefixes defaults to the write prefixes.
if len(sto.readPrefixes) == 0 {
sto.readPrefixes = sto.replicaPrefixes
}
for _, prefix := range sto.replicaPrefixes {
s, err := ld.GetStorage(prefix)
if err != nil {
// If it's not a storage interface, it might be an http Handler
// that also supports being a target (e.g. a sync handler).
h, _ := ld.GetHandler(prefix)
var ok bool
if s, ok = h.(blobserver.Storage); !ok {
return nil, err
}
}
sto.replicas = append(sto.replicas, s)
}
for _, prefix := range sto.readPrefixes {
s, err := ld.GetStorage(prefix)
if err != nil {
return nil, err
}
sto.readReplicas = append(sto.readReplicas, s)
}
return sto, nil
}
func newShareFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Handler, err error) {
blobRoot := conf.RequiredString("blobRoot")
if blobRoot == "" {
return nil, errors.New("No blobRoot defined for share handler")
}
share := &shareHandler{
blobRoot: blobRoot,
}
bs, err := ld.GetStorage(share.blobRoot)
if err != nil {
return nil, fmt.Errorf("Share handler's blobRoot of %q error: %v", share.blobRoot, err)
}
fetcher, ok := bs.(blob.StreamingFetcher)
if !ok {
return nil, errors.New("Share handler's storage not a StreamingFetcher.")
}
share.fetcher = fetcher
return share, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (storage blobserver.Storage, err error) {
sto := &shardStorage{
shardPrefixes: config.RequiredList("backends"),
}
if err := config.Validate(); err != nil {
return nil, err
}
if len(sto.shardPrefixes) == 0 {
return nil, errors.New("shard: need at least one shard")
}
sto.shards = make([]blobserver.Storage, len(sto.shardPrefixes))
for i, prefix := range sto.shardPrefixes {
shardSto, err := ld.GetStorage(prefix)
if err != nil {
return nil, err
}
sto.shards[i] = shardSto
}
return sto, nil
}
func newShareFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (http.Handler, error) {
blobRoot := conf.RequiredString("blobRoot")
if blobRoot == "" {
return nil, errors.New("No blobRoot defined for share handler")
}
if err := conf.Validate(); err != nil {
return nil, err
}
bs, err := ld.GetStorage(blobRoot)
if err != nil {
return nil, fmt.Errorf("failed to get share handler's storage at %q: %v", blobRoot, err)
}
fetcher, ok := bs.(blob.Fetcher)
if !ok {
return nil, errors.New("share handler's storage not a Fetcher.")
}
sh := &shareHandler{
fetcher: fetcher,
log: true,
}
return sh, nil
}
func newFromConfig(ld blobserver.Loader, config jsonconfig.Obj) (storage blobserver.Storage, err error) {
sto := &replicaStorage{
replicaPrefixes: config.RequiredList("backends"),
readPrefixes: config.OptionalList("readBackends"),
}
nReplicas := len(sto.replicaPrefixes)
sto.minWritesForSuccess = config.OptionalInt("minWritesForSuccess", nReplicas)
if err := config.Validate(); err != nil {
return nil, err
}
if nReplicas == 0 {
return nil, errors.New("replica: need at least one replica")
}
if sto.minWritesForSuccess == 0 {
sto.minWritesForSuccess = nReplicas
}
// readPrefixes defaults to the write prefixes.
if len(sto.readPrefixes) == 0 {
sto.readPrefixes = sto.replicaPrefixes
}
for _, prefix := range sto.replicaPrefixes {
s, err := ld.GetStorage(prefix)
if err != nil {
return nil, err
}
sto.replicas = append(sto.replicas, s)
}
for _, prefix := range sto.readPrefixes {
s, err := ld.GetStorage(prefix)
if err != nil {
return nil, err
}
sto.readReplicas = append(sto.readReplicas, s)
}
return sto, nil
}