Move backends to seperate packages

straw_gcs.go → gcs/straw_gcs.go

@@ -1,21 +1,33 @@
-package straw
+package gcs
 
 import (
 	"context"
 	"fmt"
 	"io"
+	"net/url"
 	"os"
 	"path/filepath"
 	"sort"
 	"strings"
 	"time"
 
 	"cloud.google.com/go/storage"
+	"github.com/uw-labs/straw"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
 )
 
-var _ StreamStore = &GCSStreamStore{}
+var _ straw.StreamStore = &GCSStreamStore{}
+
+func init() {
+	straw.Register("gs", func(u *url.URL) (straw.StreamStore, error) {
+		creds := u.Query().Get("credentialsfile")
+		if creds == "" {
+			return nil, fmt.Errorf("gs URLs must provide a `credentialsfile` parameter")
+		}
+		return NewGCSStreamStore(creds, u.Host)
+	})
+}
 
 func NewGCSStreamStore(credentialsFile string, bucket string) (*GCSStreamStore, error) {
 	ctx := context.Background()
@@ -131,7 +143,7 @@ func (sr *gcsStatResult) Sys() interface{} {
 	return nil
 }
 
-func (fs *GCSStreamStore) OpenReadCloser(name string) (StrawReader, error) {
+func (fs *GCSStreamStore) OpenReadCloser(name string) (straw.StrawReader, error) {
 	fi, err := fs.Stat(name)
 	if err != nil {
 		return nil, err
@@ -233,7 +245,7 @@ func (fs *GCSStreamStore) Remove(name string) error {
 	return fs.client.Bucket(fs.bucket).Object(name).Delete(context.Background())
 }
 
-func (fs *GCSStreamStore) CreateWriteCloser(name string) (StrawWriter, error) {
+func (fs *GCSStreamStore) CreateWriteCloser(name string) (straw.StrawWriter, error) {
 	name = fs.noSlashPrefix(name)
 
 	if err := fs.checkParentDir(name); err != nil {

straw_s3.go → s3/straw_s3.go

@@ -1,10 +1,11 @@
-package straw
+package s3
 
 import (
 	"fmt"
 	"io"
 	"io/ioutil"
 	"log"
+	"net/url"
 	"os"
 	"path/filepath"
 	"sort"
@@ -16,6 +17,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/s3"
 	"github.com/aws/aws-sdk-go/service/s3/s3manager"
+	"github.com/uw-labs/straw"
 )
 
 type ServerSideEncryptionType string
@@ -25,7 +27,22 @@ const (
 	ServerSideEncryptionTypeAES256 ServerSideEncryptionType = "AES256"
 )
 
-var _ StreamStore = &S3StreamStore{}
+var _ straw.StreamStore = &S3StreamStore{}
+
+func init() {
+	straw.Register("s3", func(u *url.URL) (straw.StreamStore, error) {
+		sse := u.Query().Get("sse")
+		var opts []S3Option
+		switch sse {
+		case "":
+		case "AES256":
+			opts = append(opts, S3ServerSideEncoding(ServerSideEncryptionTypeAES256))
+		default:
+			return nil, fmt.Errorf("unknown server side encryption type '%s'", sse)
+		}
+		return NewS3StreamStore(u.Host, opts...)
+	})
+}
 
 func NewS3StreamStore(bucket string, options ...S3Option) (*S3StreamStore, error) {
 	sess, err := session.NewSessionWithOptions(
@@ -159,7 +176,7 @@ func (sr *s3StatResult) Sys() interface{} {
 	return nil
 }
 
-func (fs *S3StreamStore) OpenReadCloser(name string) (StrawReader, error) {
+func (fs *S3StreamStore) OpenReadCloser(name string) (straw.StrawReader, error) {
 	fi, err := fs.Stat(name)
 	if err != nil {
 		return nil, err
@@ -299,7 +316,7 @@ func (fs *S3StreamStore) Remove(name string) error {
 	return err
 }
 
-func (fs *S3StreamStore) CreateWriteCloser(name string) (StrawWriter, error) {
+func (fs *S3StreamStore) CreateWriteCloser(name string) (straw.StrawWriter, error) {
 	name = fs.noSlashPrefix(name)
 
 	if err := fs.checkParentDir(name); err != nil {

straw_s3_options.go → s3/straw_s3_options.go

@@ -1,4 +1,4 @@
-package straw
+package s3
 
 // S3Option is an option to the s3 backend
 type S3Option interface {

straw_sftp.go → sftp/straw_sftp.go

@@ -1,4 +1,4 @@
-package straw
+package sftp
 
 import (
 	"errors"
@@ -12,10 +12,17 @@ import (
 	"sync"
 
 	"github.com/pkg/sftp"
+	"github.com/uw-labs/straw"
 	"golang.org/x/crypto/ssh"
 )
 
-var _ StreamStore = &SFTPStreamStore{}
+var _ straw.StreamStore = &SFTPStreamStore{}
+
+func init() {
+	straw.Register("sftp", func(u *url.URL) (straw.StreamStore, error) {
+		return NewSFTPStreamStore(u.String())
+	})
+}
 
 type SFTPStreamStore struct {
 	sshClient  *ssh.Client
@@ -74,7 +81,7 @@ func (s *SFTPStreamStore) Mkdir(path string, mode os.FileMode) error {
 	return err
 }
 
-func (s *SFTPStreamStore) OpenReadCloser(name string) (StrawReader, error) {
+func (s *SFTPStreamStore) OpenReadCloser(name string) (straw.StrawReader, error) {
 	sr, err := s.sftpClient.Open(name)
 	if err != nil {
 		return nil, err
@@ -99,7 +106,7 @@ func (s *SFTPStreamStore) Remove(name string) error {
 	return err
 }
 
-func (s *SFTPStreamStore) CreateWriteCloser(name string) (StrawWriter, error) {
+func (s *SFTPStreamStore) CreateWriteCloser(name string) (straw.StrawWriter, error) {
 	fi, err := s.Stat(name)
 	if err == nil && fi.IsDir() {
 		return nil, fmt.Errorf("%s is a directory", name)

strawurl.go

@@ -22,29 +22,8 @@ func Open(u string) (StreamStore, error) {
 }
 
 func init() {
+	// the only "built in" backend is "file"
 	Register("file", func(u *url.URL) (StreamStore, error) {
 		return &OsStreamStore{}, nil
 	})
-	Register("gs", func(u *url.URL) (StreamStore, error) {
-		creds := u.Query().Get("credentialsfile")
-		if creds == "" {
-			return nil, fmt.Errorf("gs URLs must provide a `credentialsfile` parameter")
-		}
-		return NewGCSStreamStore(creds, u.Host)
-	})
-	Register("s3", func(u *url.URL) (StreamStore, error) {
-		sse := u.Query().Get("sse")
-		var opts []S3Option
-		switch sse {
-		case "":
-		case "AES256":
-			opts = append(opts, S3ServerSideEncoding(ServerSideEncryptionTypeAES256))
-		default:
-			return nil, fmt.Errorf("unknown server side encryption type '%s'", sse)
-		}
-		return NewS3StreamStore(u.Host, opts...)
-	})
-	Register("sftp", func(u *url.URL) (StreamStore, error) {
-		return NewSFTPStreamStore(u.String())
-	})
 }