storj/cmd/gateway/main.go

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2019-01-24 20:15:10 +00:00
// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package main
import (
"context"
"crypto/rand"
"fmt"
"net"
"os"
"path/filepath"
base58 "github.com/jbenet/go-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/storj/internal/fpath"
"storj.io/storj/pkg/cfgstruct"
"storj.io/storj/pkg/identity"
"storj.io/storj/pkg/miniogw"
"storj.io/storj/pkg/process"
"storj.io/storj/pkg/storj"
"storj.io/storj/uplink"
)
// GatewayFlags configuration flags
type GatewayFlags struct {
Identity identity.Config
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GenerateTestCerts bool `default:"false" help:"generate sample TLS certs for Minio GW" setup:"true"`
Server miniogw.ServerConfig
Minio miniogw.MinioConfig
uplink.Config
}
var (
// 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
isDev bool
)
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")
cfgstruct.DevFlag(rootCmd, &isDev, false, "use development and test configuration settings")
rootCmd.AddCommand(runCmd)
rootCmd.AddCommand(setupCmd)
cfgstruct.Bind(runCmd.Flags(), &runCfg, isDev, cfgstruct.ConfDir(confDir), cfgstruct.IdentityDir(identityDir))
cfgstruct.BindSetup(setupCmd.Flags(), &setupCfg, isDev, cfgstruct.ConfDir(confDir), cfgstruct.IdentityDir(identityDir))
}
func cmdSetup(cmd *cobra.Command, args []string) (err error) {
setupDir, err := filepath.Abs(confDir)
if err != nil {
return err
}
valid, _ := fpath.IsValidSetupDir(setupDir)
if !valid {
return fmt.Errorf("gateway configuration already exists (%v)", setupDir)
}
err = os.MkdirAll(setupDir, 0700)
if err != nil {
return err
}
if setupCfg.GenerateTestCerts {
minioCerts := filepath.Join(setupDir, "minio", "certs")
if err := os.MkdirAll(minioCerts, 0744); err != nil {
return err
}
if err := os.Link(setupCfg.Identity.CertPath, filepath.Join(minioCerts, "public.crt")); err != nil {
return err
}
if err := os.Link(setupCfg.Identity.KeyPath, filepath.Join(minioCerts, "private.key")); err != nil {
return err
}
}
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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
}
return process.SaveConfigWithAllDefaults(cmd.Flags(), filepath.Join(setupDir, "config.yaml"), overrides)
}
func cmdRun(cmd *cobra.Command, args []string) (err error) {
identity, err := runCfg.Identity.Load()
if err != nil {
zap.S().Fatal(err)
}
address := runCfg.Server.Address
host, port, err := net.SplitHostPort(address)
if err != nil {
return err
}
if host == "" {
address = net.JoinHostPort("localhost", port)
}
fmt.Printf("Starting Storj S3-compatible gateway!\n\n")
fmt.Printf("Endpoint: %s\n", address)
fmt.Printf("Access key: %s\n", runCfg.Minio.AccessKey)
fmt.Printf("Secret key: %s\n", runCfg.Minio.SecretKey)
ctx := process.Ctx(cmd)
metainfo, _, err := runCfg.GetMetainfo(ctx, identity)
if err != nil {
return err
}
if err := process.InitMetricsWithCertPath(ctx, nil, runCfg.Identity.CertPath); err != nil {
zap.S().Error("Failed to initialize telemetry batcher: ", err)
}
_, err = metainfo.ListBuckets(ctx, storj.BucketListOptions{Direction: storj.After})
if err != nil {
return fmt.Errorf("Failed to contact Satellite.\n"+
"Perhaps your configuration is invalid?\n%s", err)
}
return runCfg.Run(ctx, identity)
}
func generateKey() (key string, err error) {
var buf [20]byte
_, err = rand.Read(buf[:])
if err != nil {
return "", err
}
return base58.Encode(buf[:]), nil
}
// Run starts a Minio Gateway given proper config
func (flags GatewayFlags) Run(ctx context.Context, identity *identity.FullIdentity) (err error) {
err = minio.RegisterGatewayCommand(cli.Command{
Name: "storj",
Usage: "Storj",
Action: func(cliCtx *cli.Context) error {
return flags.action(ctx, cliCtx, identity)
},
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, identity *identity.FullIdentity) (err error) {
gw, err := flags.NewGateway(ctx, identity)
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, identity *identity.FullIdentity) (gw minio.Gateway, err error) {
metainfo, streams, err := flags.GetMetainfo(ctx, identity)
if err != nil {
return nil, err
}
return miniogw.NewStorjGateway(
metainfo,
streams,
storj.Cipher(flags.Enc.PathType),
flags.GetEncryptionScheme(),
flags.GetRedundancyScheme(),
), nil
}
func main() {
process.Exec(rootCmd)
}