Merge pull request #11 from nspcc-dev/feature/8-rework_auth_scheme

[#8] Rework auth procedure and use package authmate

auth/center.go

@@ -2,18 +2,22 @@ package auth
 
 import (
 	"bytes"
+	"context"
 	"crypto/ecdsa"
-	"crypto/rsa"
-	"encoding/hex"
 	"io/ioutil"
 	"net/http"
 	"regexp"
 	"strings"
+	"time"
 
-	"github.com/klauspost/compress/zstd"
+	aws_credentials "github.com/aws/aws-sdk-go/aws/credentials"
+	v4 "github.com/aws/aws-sdk-go/aws/signer/v4"
 	"github.com/nspcc-dev/neofs-api-go/refs"
 	"github.com/nspcc-dev/neofs-api-go/service"
-	crypto "github.com/nspcc-dev/neofs-crypto"
+	"github.com/nspcc-dev/neofs-authmate/accessbox/hcs"
+	"github.com/nspcc-dev/neofs-authmate/credentials"
+	"github.com/nspcc-dev/neofs-authmate/gates"
+	manager "github.com/nspcc-dev/neofs-authmate/neofsmanager"
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
 )
@@ -26,74 +30,48 @@ const emptyStringSHA256 = `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca4959
 type Center struct {
 	log              *zap.Logger
 	submatcher       *regexpSubmatcher
-	zstdEncoder *zstd.Encoder
+	neofsCredentials *credentials.Credentials
-	zstdDecoder *zstd.Decoder
+	manager          *manager.Manager
-	neofsKeys   struct {
+	authKeys         *hcs.X25519Keys
-		PrivateKey *ecdsa.PrivateKey
-		PublicKey  *ecdsa.PublicKey
-	}
-	ownerID      refs.OwnerID
-	wifString    string
-	userAuthKeys struct {
-		PrivateKey *rsa.PrivateKey
-		PublicKey  *rsa.PublicKey
-	}
 }
 
 // NewCenter creates an instance of AuthCenter.
-func NewCenter(log *zap.Logger) (*Center, error) {
+func NewCenter(log *zap.Logger, neofsNodeAddress string) (*Center, error) {
-	zstdEncoder, err := zstd.NewWriter(nil)
+	m, err := manager.NewManager(neofsNodeAddress)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to create zstd encoder")
+		return nil, err
-	}
-	zstdDecoder, err := zstd.NewReader(nil)
-	if err != nil {
-		return nil, errors.Wrap(err, "failed to create zstd decoder")
 	}
 	return &Center{
 		log:        log,
 		submatcher: &regexpSubmatcher{re: authorizationFieldRegexp},
-		zstdEncoder: zstdEncoder,
+		manager:    m,
-		zstdDecoder: zstdDecoder,
 	}, nil
 }
 
 func (center *Center) SetNeoFSKeys(key *ecdsa.PrivateKey) error {
-	publicKey := &key.PublicKey
+	creds, err := credentials.NewFromKey(key)
-	oid, err := refs.NewOwnerID(publicKey)
 	if err != nil {
-		return errors.Wrap(err, "failed to get OwnerID")
+		return err
 	}
-	center.neofsKeys.PrivateKey = key
+	center.neofsCredentials = creds
-	wif, err := crypto.WIFEncode(key)
-	if err != nil {
-		return errors.Wrap(err, "failed to get WIF string from given key")
-	}
-	center.neofsKeys.PublicKey = publicKey
-	center.ownerID = oid
-	center.wifString = wif
 	return nil
 }
 
 func (center *Center) GetNeoFSPrivateKey() *ecdsa.PrivateKey {
-	return center.neofsKeys.PrivateKey
+	return center.neofsCredentials.Key()
-}
-
-func (center *Center) GetNeoFSPublicKey() *ecdsa.PublicKey {
-	return center.neofsKeys.PublicKey
 }
 
 func (center *Center) GetOwnerID() refs.OwnerID {
-	return center.ownerID
+	return center.neofsCredentials.OwnerID()
 }
 
-func (center *Center) GetWIFString() string {
+func (center *Center) SetAuthKeys(key hcs.X25519PrivateKey) error {
-	return center.wifString
+	keys, err := hcs.NewKeys(key)
+	if err != nil {
+		return err
 	}
-
+	center.authKeys = keys
-func (center *Center) SetUserAuthKeys(key *rsa.PrivateKey) {
+	return nil
-	center.userAuthKeys.PrivateKey = key
-	center.userAuthKeys.PublicKey = &key.PublicKey
 }
 
 func (center *Center) AuthenticationPassed(request *http.Request) (*service.BearerTokenMsg, error) {
@@ -113,19 +91,15 @@ func (center *Center) AuthenticationPassed(request *http.Request) (*service.Bear
 	if len(signedHeaderFieldsNames) == 0 {
 		return nil, errors.New("wrong format of signed headers part")
 	}
-	// signatureDateTime, err := time.Parse("20060102T150405Z", request.Header.Get("X-Amz-Date"))
+	signatureDateTime, err := time.Parse("20060102T150405Z", request.Header.Get("X-Amz-Date"))
-	// if err != nil {
+	if err != nil {
-	// 	return nil, errors.Wrap(err, "failed to parse x-amz-date header field")
+		return nil, errors.Wrap(err, "failed to parse x-amz-date header field")
-	// }
+	}
-
 	accessKeyID := sms1["access_key_id"]
-	bearerToken, _, err := center.fetchBearerToken(accessKeyID)
+	bearerToken, secretAccessKey, err := center.fetchBearerToken(accessKeyID)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to fetch bearer token")
 	}
-
-	// Disable verification of S3 signature for arrival of the new auth scheme.
-	/*
 	otherRequest := request.Clone(context.TODO())
 	otherRequest.Header = map[string][]string{}
 	for hfn, hfvs := range request.Header {
@@ -135,7 +109,7 @@ func (center *Center) AuthenticationPassed(request *http.Request) (*service.Bear
 			}
 		}
 	}
-		awsCreds := credentials.NewStaticCredentials(accessKeyID, secretAccessKey, "")
+	awsCreds := aws_credentials.NewStaticCredentials(accessKeyID, secretAccessKey, "")
 	signer := v4.NewSigner(awsCreds)
 	body, err := readAndKeepBody(request)
 	if err != nil {
@@ -149,55 +123,27 @@ func (center *Center) AuthenticationPassed(request *http.Request) (*service.Bear
 	if sms1["v4_signature"] != sms2["v4_signature"] {
 		return nil, errors.Wrap(err, "failed to pass authentication procedure")
 	}
-	*/
 	return bearerToken, nil
 }
 
-func (center *Center) packBearerToken(bearerToken *service.BearerTokenMsg) (string, string, error) {
-	data, err := bearerToken.Marshal()
-	if err != nil {
-		return "", "", errors.Wrap(err, "failed to marshal bearer token")
-	}
-	encryptedKeyID, err := encrypt(center.userAuthKeys.PublicKey, center.compress(data))
-	if err != nil {
-		return "", "", errors.Wrap(err, "failed to encrypt bearer token bytes")
-	}
-	accessKeyID := hex.EncodeToString(encryptedKeyID)
-	secretAccessKey := hex.EncodeToString(sha256Hash(data))
-	return accessKeyID, secretAccessKey, nil
-}
-
-func (center *Center) unpackBearerToken(accessKeyID string) (*service.BearerTokenMsg, string, error) {
-	encryptedKeyID, err := hex.DecodeString(accessKeyID)
-	if err != nil {
-		return nil, "", errors.Wrap(err, "failed to decode HEX string")
-	}
-	compressedKeyID, err := decrypt(center.userAuthKeys.PrivateKey, encryptedKeyID)
-	if err != nil {
-		return nil, "", errors.Wrap(err, "failed to decrypt key ID")
-	}
-	data, err := center.decompress(compressedKeyID)
-	if err != nil {
-		return nil, "", errors.Wrap(err, "failed to decompress key ID")
-	}
-	bearerToken := new(service.BearerTokenMsg)
-	if err := bearerToken.Unmarshal(data); err != nil {
-		return nil, "", errors.Wrap(err, "failed to unmarshal embedded bearer token")
-	}
-	secretAccessKey := hex.EncodeToString(sha256Hash(data))
-	return bearerToken, secretAccessKey, nil
-}
-
-// FIXME: Reimplement this method right after finilizign a new auth scheme.
 func (center *Center) fetchBearerToken(accessKeyID string) (*service.BearerTokenMsg, string, error) {
-	// TODO: Turn it into getting bearer token from NeoFS node later on.
+	akid := new(refs.Address)
-	accessKeyID = "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"
+	if err := akid.Parse(accessKeyID); err != nil {
-	secretAccessKey := "12775ab859000dd87b3c7586146f465efc73bbbd33ac3b36f2ab2b061df15f7b"
+		return nil, "", errors.Wrap(err, "failed to parse access key id as refs.Address")
-	bearerToken, _, err := center.unpackBearerToken(accessKeyID)
-	if err != nil {
-		return nil, "", errors.Wrap(err, "failed to fetch bearer token")
 	}
-	return bearerToken, secretAccessKey, nil
+	config := &gates.ObtainingConfig{
+		BaseConfig: gates.BaseConfig{
+			OperationalCredentials: center.neofsCredentials,
+			Manager:                center.manager,
+		},
+		GateKeys:      center.authKeys,
+		SecretAddress: akid,
+	}
+	res, err := gates.ObtainSecret(config)
+	if err != nil {
+		return nil, "", errors.Wrap(err, "failed to obtain secret")
+	}
+	return res.BearerToken, res.SecretAccessKey, nil
 }
 
 // TODO: Make this write into a smart buffer backed by a file on a fast drive.
@@ -214,10 +160,6 @@ func readAndKeepBody(request *http.Request) (*bytes.Reader, error) {
 	return bytes.NewReader(payload), nil
 }
 
-func (center *Center) compress(data []byte) []byte {
+func LoadGateAuthPrivateKey(path string) (hcs.X25519PrivateKey, error) {
-	return center.zstdEncoder.EncodeAll(data, make([]byte, 0, len(data)))
+	return ioutil.ReadFile(path)
-}
-
-func (center *Center) decompress(data []byte) ([]byte, error) {
-	return center.zstdDecoder.DecodeAll(data, nil)
 }

auth/rsa-utils.go

@@ -1,42 +0,0 @@
-package auth
-
-import (
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/sha256"
-	"crypto/x509"
-	"encoding/pem"
-	"io/ioutil"
-
-	"github.com/pkg/errors"
-)
-
-func ReadRSAPrivateKeyFromPEMFile(filePath string) (*rsa.PrivateKey, error) {
-	kbs, err := ioutil.ReadFile(filePath)
-	if err != nil {
-		return nil, errors.Wrapf(err, "failed to read file %s", filePath)
-	}
-	pemBlock, _ := pem.Decode(kbs)
-	if pemBlock == nil {
-		return nil, errors.Errorf("failed to decode PEM data from file %s", filePath)
-	}
-	rsaKey, err := x509.ParsePKCS1PrivateKey(pemBlock.Bytes)
-	if err != nil {
-		return nil, errors.Wrapf(err, "failed to parse private key bytes from pem data from file %s", filePath)
-	}
-	return rsaKey, nil
-}
-
-func encrypt(key *rsa.PublicKey, data []byte) ([]byte, error) {
-	return rsa.EncryptOAEP(sha256.New(), rand.Reader, key, data, []byte{})
-}
-
-func decrypt(key *rsa.PrivateKey, data []byte) ([]byte, error) {
-	return rsa.DecryptOAEP(sha256.New(), rand.Reader, key, data, []byte{})
-}
-
-func sha256Hash(data []byte) []byte {
-	hash := sha256.New()
-	hash.Write(data)
-	return hash.Sum(nil)
-}

cmd/gate/app-settings.go

@@ -4,7 +4,6 @@ import (
 	"crypto/ecdsa"
 	"crypto/elliptic"
 	"crypto/rand"
-	"crypto/rsa"
 	"fmt"
 	"io"
 	"os"
@@ -57,8 +56,8 @@ const ( // settings
 	cfgKeepalivePermitWithoutStream = "keepalive.permit_without_stream"
 
 	// Keys
-	cfgNeoFSPrivateKey    = "neofs-ecdsa-key"
+	cfgNeoFSPrivateKey    = "neofs-key"
-	cfgUserAuthPrivateKey = "userauth-rsa-key"
+	cfgGateAuthPrivateKey = "auth-key"
 
 	// HTTPS/TLS
 	cfgTLSKeyFile  = "tls.key_file"
@@ -92,11 +91,10 @@ type empty int
 
 func (empty) Read([]byte) (int, error) { return 0, io.EOF }
 
-func fetchAuthCenter(l *zap.Logger, v *viper.Viper) (*auth.Center, error) {
+func fetchAuthCenter(l *zap.Logger, v *viper.Viper, peers []pool.Peer) (*auth.Center, error) {
 	var (
 		err             error
 		neofsPrivateKey *ecdsa.PrivateKey
-		userAuthPrivateKey *rsa.PrivateKey
 	)
 	switch nfspk := v.GetString(cfgNeoFSPrivateKey); nfspk {
 	case generated:
@@ -110,18 +108,21 @@ func fetchAuthCenter(l *zap.Logger, v *viper.Viper) (*auth.Center, error) {
 			return nil, errors.Wrap(err, "could not load NeoFS private key")
 		}
 	}
-	uapk := v.GetString(cfgUserAuthPrivateKey)
+	gapk := v.GetString(cfgGateAuthPrivateKey)
-	userAuthPrivateKey, err = auth.ReadRSAPrivateKeyFromPEMFile(uapk)
+	gateAuthPrivateKey, err := auth.LoadGateAuthPrivateKey(gapk)
 	if err != nil {
-		return nil, errors.Wrapf(err, "could not load UserAuth private key %q", uapk)
+		return nil, errors.Wrapf(err, "could not load gate auth private key %q", gapk)
 	}
-	center, err := auth.NewCenter(l)
+	// NB: Maybe choose a peer more smarter.
+	center, err := auth.NewCenter(l, peers[0].Address)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create auth center")
 	}
-	center.SetUserAuthKeys(userAuthPrivateKey)
+	if err = center.SetAuthKeys(gateAuthPrivateKey); err != nil {
+		return nil, errors.Wrap(err, "failed to set gate auth keys")
+	}
 	if err = center.SetNeoFSKeys(neofsPrivateKey); err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "failed to set NeoFS keys")
 	}
 	return center, nil
 }
@@ -168,7 +169,7 @@ func newSettings() *viper.Viper {
 	version := flags.BoolP("version", "v", false, "show version")
 
 	flags.String(cfgNeoFSPrivateKey, generated, fmt.Sprintf(`set value to hex string, WIF string, or path to NeoFS private key file (use "%s" to generate key)`, generated))
-	flags.String(cfgUserAuthPrivateKey, "", "set path to file with private key to use in auth scheme")
+	flags.String(cfgGateAuthPrivateKey, "", "set path to file with auth (curve25519) private key to use in auth scheme")
 
 	flags.Bool(cfgGRPCVerbose, false, "set debug mode of gRPC connections")
 	flags.Duration(cfgRequestTimeout, defaultRequestTimeout, "set gRPC request timeout")

cmd/gate/app.go

@@ -59,12 +59,11 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 		maxClientsCount    = defaultMaxClientsCount
 		maxClientsDeadline = defaultMaxClientsDeadline
 	)
-
+	peers := fetchPeers(l, v)
-	center, err := fetchAuthCenter(l, v)
+	center, err := fetchAuthCenter(l, v, peers)
 	if err != nil {
 		l.Fatal("failed to initialize auth center", zap.Error(err))
 	}
-
 	key = center.GetNeoFSPrivateKey()
 
 	if v.IsSet(cfgTLSKeyFile) && v.IsSet(cfgTLSCertFile) {
@@ -95,7 +94,7 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 		ConnectTimeout: v.GetDuration(cfgConnectTimeout),
 		RequestTimeout: v.GetDuration(cfgRequestTimeout),
 
-		Peers: fetchPeers(l, v),
+		Peers: peers,
 
 		Logger:     l,
 		PrivateKey: key,

go.mod

@@ -3,22 +3,33 @@ module github.com/nspcc-dev/neofs-s3-gate
 go 1.14
 
 require (
+	github.com/awalterschulze/gographviz v2.0.1+incompatible // indirect
+	github.com/aws/aws-sdk-go v1.33.20
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/google/uuid v1.1.1
 	github.com/gorilla/mux v1.7.4
-	github.com/klauspost/compress v1.10.10
+	github.com/mitchellh/mapstructure v1.3.3 // indirect
+	github.com/mr-tron/base58 v1.2.0 // indirect
+	github.com/nspcc-dev/hrw v1.0.9 // indirect
 	github.com/nspcc-dev/neofs-api-go v1.3.0
+	github.com/nspcc-dev/neofs-authmate v0.0.0-20200806174343-d3b2deb75d54
 	github.com/nspcc-dev/neofs-crypto v0.3.0
+	github.com/pelletier/go-toml v1.8.0 // indirect
 	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_golang v1.6.0
+	github.com/prometheus/client_golang v1.7.1
-	github.com/spf13/pflag v1.0.3
+	github.com/prometheus/common v0.11.1 // indirect
-	github.com/spf13/viper v1.7.0
+	github.com/spf13/afero v1.3.3 // indirect
+	github.com/spf13/cast v1.3.1 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5
+	github.com/spf13/viper v1.7.1
 	go.uber.org/atomic v1.6.0
 	go.uber.org/zap v1.15.0
-	golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899 // indirect
 	golang.org/x/net v0.0.0-20200707034311-ab3426394381 // indirect
-	golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae // indirect
+	golang.org/x/sys v0.0.0-20200806125547-5acd03effb82 // indirect
 	golang.org/x/text v0.3.3 // indirect
-	google.golang.org/grpc v1.29.1
+	google.golang.org/genproto v0.0.0-20200806141610-86f49bd18e98 // indirect
+	google.golang.org/grpc v1.31.0
+	google.golang.org/protobuf v1.25.0 // indirect
 	gopkg.in/ini.v1 v1.57.0 // indirect
-	gopkg.in/yaml.v2 v2.2.8 // indirect
 )

go.sum

@@ -19,28 +19,47 @@ github.com/CityOfZion/neo-go v0.70.1-pre.0.20191209120015-fccb0085941e/go.mod h1
 github.com/CityOfZion/neo-go v0.70.1-pre.0.20191212173117-32ac01130d4c/go.mod h1:JtlHfeqLywZLswKIKFnAp+yzezY4Dji9qlfQKB2OD/I=
 github.com/CityOfZion/neo-go v0.71.1-pre.0.20200129171427-f773ec69fb84/go.mod h1:FLI526IrRWHmcsO+mHsCbj64pJZhwQFTLJZu+A4PGOA=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
+github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
+github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
+github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
 github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
 github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
+github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alicebob/gopher-json v0.0.0-20180125190556-5a6b3ba71ee6/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
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@@ -61,11 +83,15 @@ github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8Nz
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@@ -115,9 +160,11 @@ github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:x
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@@ -128,28 +175,39 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@@ -336,10 +491,15 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
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 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
@@ -349,18 +509,26 @@ go.etcd.io/bbolt v1.3.2 h1:Z/90sZLPOeCy2PwprqkFa25PdkusRzaj9P8zm/KNyvk=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.4/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
+go.etcd.io/etcd v0.0.0-20191023171146-3cf2f69b5738/go.mod h1:dnLIgRNXwCJa5e+c6mIZCrds/GIG4ncV9HhK5PX7jPg=
+go.opencensus.io v0.20.1/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
+go.opencensus.io v0.20.2/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0 h1:C9hSCOW830chIVkdja34wa6Ky+IzWllkUinR+BtRZd4=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
+go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
+go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
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+go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
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 go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
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+go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
 go.uber.org/zap v1.15.0 h1:ZZCA22JRF2gQE5FoNmhmrf7jeJJ2uhqDUNRYKm8dvmM=
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@@ -370,10 +538,11 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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@@ -393,6 +562,7 @@ golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU
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+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
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@@ -401,6 +571,8 @@ golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73r
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+golang.org/x/net v0.0.0-20190125091013-d26f9f9a57f3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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@@ -409,6 +581,9 @@ golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
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+golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
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 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -428,6 +603,7 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@@ -441,27 +617,37 @@ golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -483,9 +669,13 @@ golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtn
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@@ -493,6 +683,7 @@ google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEn
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@@ -501,45 +692,71 @@ google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRn
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@@ -547,3 +764,5 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
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