storj/cmd/gateway/main.go
Egon Elbre 6615ecc9b6 common: separate repository
Change-Id: Ibb89c42060450e3839481a7e495bbe3ad940610a
2019-12-27 14:11:15 +02:00

367 lines
9.9 KiB
Go

// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package main
import (
"context"
"crypto/rand"
"fmt"
"net"
"os"
"path/filepath"
"github.com/btcsuite/btcutil/base58"
"github.com/minio/cli"
minio "github.com/minio/minio/cmd"
"github.com/spf13/cobra"
"github.com/zeebo/errs"
"go.uber.org/zap"
"storj.io/common/fpath"
"storj.io/common/storj"
"storj.io/storj/cmd/internal/wizard"
libuplink "storj.io/storj/lib/uplink"
"storj.io/storj/pkg/cfgstruct"
"storj.io/storj/pkg/miniogw"
"storj.io/storj/pkg/process"
"storj.io/storj/private/version"
"storj.io/storj/private/version/checker"
"storj.io/storj/uplink"
)
// GatewayFlags configuration flags
type GatewayFlags struct {
NonInteractive bool `help:"disable interactive mode" default:"false" setup:"true"`
Server miniogw.ServerConfig
Minio miniogw.MinioConfig
uplink.Config
Version checker.Config
PBKDFConcurrency int `help:"Unfortunately, up until v0.26.2, keys generated from passphrases depended on the number of cores the local CPU had. If you entered a passphrase with v0.26.2 earlier, you'll want to set this number to the number of CPU cores your computer had at the time. This flag may go away in the future. For new installations the default value is highly recommended." default:"0"`
}
var (
// Error is the default gateway setup errs class
Error = errs.Class("gateway setup error")
// rootCmd represents the base gateway command when called without any subcommands
rootCmd = &cobra.Command{
Use: "gateway",
Short: "The Storj client-side S3 gateway",
Args: cobra.OnlyValidArgs,
}
setupCmd = &cobra.Command{
Use: "setup",
Short: "Create a gateway config file",
RunE: cmdSetup,
Annotations: map[string]string{"type": "setup"},
}
runCmd = &cobra.Command{
Use: "run",
Short: "Run the S3 gateway",
RunE: cmdRun,
}
setupCfg GatewayFlags
runCfg GatewayFlags
confDir string
identityDir string
)
func init() {
defaultConfDir := fpath.ApplicationDir("storj", "gateway")
defaultIdentityDir := fpath.ApplicationDir("storj", "identity", "gateway")
cfgstruct.SetupFlag(zap.L(), rootCmd, &confDir, "config-dir", defaultConfDir, "main directory for gateway configuration")
cfgstruct.SetupFlag(zap.L(), rootCmd, &identityDir, "identity-dir", defaultIdentityDir, "main directory for gateway identity credentials")
defaults := cfgstruct.DefaultsFlag(rootCmd)
rootCmd.AddCommand(runCmd)
rootCmd.AddCommand(setupCmd)
process.Bind(runCmd, &runCfg, defaults, cfgstruct.ConfDir(confDir), cfgstruct.IdentityDir(identityDir))
process.Bind(setupCmd, &setupCfg, defaults, cfgstruct.ConfDir(confDir), cfgstruct.IdentityDir(identityDir), cfgstruct.SetupMode())
}
func cmdSetup(cmd *cobra.Command, args []string) (err error) {
setupDir, err := filepath.Abs(confDir)
if err != nil {
return Error.Wrap(err)
}
valid, _ := fpath.IsValidSetupDir(setupDir)
if !valid {
return Error.New("gateway configuration already exists (%v)", setupDir)
}
err = os.MkdirAll(setupDir, 0700)
if err != nil {
return Error.Wrap(err)
}
overrides := map[string]interface{}{}
accessKeyFlag := cmd.Flag("minio.access-key")
if !accessKeyFlag.Changed {
accessKey, err := generateKey()
if err != nil {
return err
}
overrides[accessKeyFlag.Name] = accessKey
}
secretKeyFlag := cmd.Flag("minio.secret-key")
if !secretKeyFlag.Changed {
secretKey, err := generateKey()
if err != nil {
return err
}
overrides[secretKeyFlag.Name] = secretKey
}
if setupCfg.NonInteractive {
return setupCfg.nonInteractive(cmd, setupDir, overrides)
}
return setupCfg.interactive(cmd, setupDir, overrides)
}
func cmdRun(cmd *cobra.Command, args []string) (err error) {
address := runCfg.Server.Address
host, port, err := net.SplitHostPort(address)
if err != nil {
return err
}
if host == "" {
address = net.JoinHostPort("127.0.0.1", port)
}
ctx, _ := process.Ctx(cmd)
if err := process.InitMetrics(ctx, zap.L(), nil, ""); err != nil {
zap.S().Warn("Failed to initialize telemetry batcher: ", err)
}
err = checker.CheckProcessVersion(ctx, zap.L(), runCfg.Version, version.Build, "Gateway")
if err != nil {
return err
}
zap.S().Infof("Starting Storj S3-compatible gateway!\n\n")
zap.S().Infof("Endpoint: %s\n", address)
zap.S().Infof("Access key: %s\n", runCfg.Minio.AccessKey)
zap.S().Infof("Secret key: %s\n", runCfg.Minio.SecretKey)
err = checkCfg(ctx)
if err != nil {
zap.S().Warn("Failed to contact Satellite. Perhaps your configuration is invalid?")
return err
}
return runCfg.Run(ctx)
}
func generateKey() (key string, err error) {
var buf [20]byte
_, err = rand.Read(buf[:])
if err != nil {
return "", Error.Wrap(err)
}
return base58.Encode(buf[:]), nil
}
func checkCfg(ctx context.Context) (err error) {
proj, err := runCfg.openProject(ctx)
if err != nil {
return err
}
defer func() { err = errs.Combine(err, proj.Close()) }()
_, err = proj.ListBuckets(ctx, &storj.BucketListOptions{Direction: storj.Forward})
return err
}
// Run starts a Minio Gateway given proper config
func (flags GatewayFlags) Run(ctx context.Context) (err error) {
err = minio.RegisterGatewayCommand(cli.Command{
Name: "storj",
Usage: "Storj",
Action: func(cliCtx *cli.Context) error {
return flags.action(ctx, cliCtx)
},
HideHelpCommand: true,
})
if err != nil {
return err
}
// TODO(jt): Surely there is a better way. This is so upsetting
err = os.Setenv("MINIO_ACCESS_KEY", flags.Minio.AccessKey)
if err != nil {
return err
}
err = os.Setenv("MINIO_SECRET_KEY", flags.Minio.SecretKey)
if err != nil {
return err
}
minio.Main([]string{"storj", "gateway", "storj",
"--address", flags.Server.Address, "--config-dir", flags.Minio.Dir, "--quiet"})
return errs.New("unexpected minio exit")
}
func (flags GatewayFlags) action(ctx context.Context, cliCtx *cli.Context) (err error) {
gw, err := flags.NewGateway(ctx)
if err != nil {
return err
}
minio.StartGateway(cliCtx, miniogw.Logging(gw, zap.L()))
return errs.New("unexpected minio exit")
}
// NewGateway creates a new minio Gateway
func (flags GatewayFlags) NewGateway(ctx context.Context) (gw minio.Gateway, err error) {
scope, err := flags.GetScope()
if err != nil {
return nil, err
}
project, err := flags.openProject(ctx)
if err != nil {
return nil, err
}
return miniogw.NewStorjGateway(
project,
scope.EncryptionAccess,
storj.CipherSuite(flags.Enc.PathType),
flags.GetEncryptionParameters(),
flags.GetRedundancyScheme(),
flags.Client.SegmentSize,
), nil
}
func (flags *GatewayFlags) newUplink(ctx context.Context) (*libuplink.Uplink, error) {
// Transform the gateway config flags to the libuplink config object
libuplinkCfg := &libuplink.Config{}
libuplinkCfg.Volatile.Log = zap.L()
libuplinkCfg.Volatile.MaxInlineSize = flags.Client.MaxInlineSize
libuplinkCfg.Volatile.MaxMemory = flags.RS.MaxBufferMem
libuplinkCfg.Volatile.PeerIDVersion = flags.TLS.PeerIDVersions
libuplinkCfg.Volatile.TLS.SkipPeerCAWhitelist = !flags.TLS.UsePeerCAWhitelist
libuplinkCfg.Volatile.TLS.PeerCAWhitelistPath = flags.TLS.PeerCAWhitelistPath
libuplinkCfg.Volatile.DialTimeout = flags.Client.DialTimeout
libuplinkCfg.Volatile.PBKDFConcurrency = flags.PBKDFConcurrency
return libuplink.NewUplink(ctx, libuplinkCfg)
}
func (flags GatewayFlags) openProject(ctx context.Context) (*libuplink.Project, error) {
scope, err := flags.GetScope()
if err != nil {
return nil, Error.Wrap(err)
}
// TODO(jeff): this leaks the uplink and project :(
uplink, err := flags.newUplink(ctx)
if err != nil {
return nil, Error.Wrap(err)
}
project, err := uplink.OpenProject(ctx, scope.SatelliteAddr, scope.APIKey)
if err != nil {
return nil, Error.Wrap(err)
}
return project, nil
}
// interactive creates the configuration of the gateway interactively.
func (flags GatewayFlags) interactive(cmd *cobra.Command, setupDir string, overrides map[string]interface{}) error {
ctx, _ := process.Ctx(cmd)
satelliteAddress, err := wizard.PromptForSatellite(cmd)
if err != nil {
return Error.Wrap(err)
}
apiKeyString, err := wizard.PromptForAPIKey()
if err != nil {
return Error.Wrap(err)
}
apiKey, err := libuplink.ParseAPIKey(apiKeyString)
if err != nil {
return Error.Wrap(err)
}
passphrase, err := wizard.PromptForEncryptionPassphrase()
if err != nil {
return Error.Wrap(err)
}
uplink, err := flags.newUplink(ctx)
if err != nil {
return Error.Wrap(err)
}
defer func() { err = errs.Combine(err, uplink.Close()) }()
project, err := uplink.OpenProject(ctx, satelliteAddress, apiKey)
if err != nil {
return Error.Wrap(err)
}
defer func() { err = errs.Combine(err, project.Close()) }()
key, err := project.SaltedKeyFromPassphrase(ctx, passphrase)
if err != nil {
return Error.Wrap(err)
}
scopeData, err := (&libuplink.Scope{
SatelliteAddr: satelliteAddress,
APIKey: apiKey,
EncryptionAccess: libuplink.NewEncryptionAccessWithDefaultKey(*key),
}).Serialize()
if err != nil {
return Error.Wrap(err)
}
overrides["scope"] = scopeData
err = process.SaveConfig(cmd, filepath.Join(setupDir, "config.yaml"),
process.SaveConfigWithOverrides(overrides),
process.SaveConfigRemovingDeprecated())
if err != nil {
return Error.Wrap(err)
}
fmt.Println(`
Your S3 Gateway is configured and ready to use!
Some things to try next:
* See http://documentation.tardigrade.io/api-reference/s3-gateway for some example commands`)
return nil
}
// nonInteractive creates the configuration of the gateway non-interactively.
func (flags GatewayFlags) nonInteractive(cmd *cobra.Command, setupDir string, overrides map[string]interface{}) error {
// ensure we're using the scope for the setup
scope, err := setupCfg.GetScope()
if err != nil {
return err
}
scopeData, err := scope.Serialize()
if err != nil {
return err
}
overrides["scope"] = scopeData
return Error.Wrap(process.SaveConfig(cmd, filepath.Join(setupDir, "config.yaml"),
process.SaveConfigWithOverrides(overrides),
process.SaveConfigRemovingDeprecated()))
}
func main() {
process.Exec(rootCmd)
}