configure and store remote configurations

5 files changed, 293 insertions, 137 deletions

diff --git a/other/java/client/src/main/proto/filer.proto b/other/java/client/src/main/proto/filer.proto
index 60c222413..803a2ce32 100644
--- a/other/java/client/src/main/proto/filer.proto
+++ b/other/java/client/src/main/proto/filer.proto
@@ -378,7 +378,8 @@ message FilerConf {
 message RemoteConf {
     string type = 1;
     string name = 2;
-    string url = 3;
-    string access_key = 4;
-    string secret_key = 5;
+    string s3_access_key = 4;
+    string s3_secret_key = 5;
+    string s3_region = 6;
+    string s3_endpoint = 7;
 }
diff --git a/weed/filer/filer_conf.go b/weed/filer/filer_conf.go
index da02c5b20..bae0eac5c 100644
--- a/weed/filer/filer_conf.go
+++ b/weed/filer/filer_conf.go
@@ -13,12 +13,13 @@ import (
 )
 
 const (
-	DirectoryEtcRoot      = "/etc"
-	DirectoryEtcSeaweedFS = "/etc/seaweedfs"
-	FilerConfName         = "filer.conf"
-	IamConfigDirecotry    = "/etc/iam"
-	IamIdentityFile       = "identity.json"
-	IamPoliciesFile       = "policies.json"
+	DirectoryEtcRoot       = "/etc"
+	DirectoryEtcSeaweedFS  = "/etc/seaweedfs"
+	DirectoryEtcRemote     = "/etc/remote"
+	FilerConfName          = "filer.conf"
+	IamConfigDirecotry     = "/etc/iam"
+	IamIdentityFile        = "identity.json"
+	IamPoliciesFile        = "policies.json"
 )
 
 type FilerConf struct {
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index 60c222413..803a2ce32 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -378,7 +378,8 @@ message FilerConf {
 message RemoteConf {
     string type = 1;
     string name = 2;
-    string url = 3;
-    string access_key = 4;
-    string secret_key = 5;
+    string s3_access_key = 4;
+    string s3_secret_key = 5;
+    string s3_region = 6;
+    string s3_endpoint = 7;
 }
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index 051f11fb6..2724bc7b0 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -3095,11 +3095,12 @@ type RemoteConf struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Type      string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
-	Name      string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
-	Url       string `protobuf:"bytes,3,opt,name=url,proto3" json:"url,omitempty"`
-	AccessKey string `protobuf:"bytes,4,opt,name=access_key,json=accessKey,proto3" json:"access_key,omitempty"`
-	SecretKey string `protobuf:"bytes,5,opt,name=secret_key,json=secretKey,proto3" json:"secret_key,omitempty"`
+	Type        string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
+	Name        string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+	S3AccessKey string `protobuf:"bytes,4,opt,name=s3_access_key,json=s3AccessKey,proto3" json:"s3_access_key,omitempty"`
+	S3SecretKey string `protobuf:"bytes,5,opt,name=s3_secret_key,json=s3SecretKey,proto3" json:"s3_secret_key,omitempty"`
+	S3Region    string `protobuf:"bytes,6,opt,name=s3_region,json=s3Region,proto3" json:"s3_region,omitempty"`
+	S3Endpoint  string `protobuf:"bytes,7,opt,name=s3_endpoint,json=s3Endpoint,proto3" json:"s3_endpoint,omitempty"`
 }
 
 func (x *RemoteConf) Reset() {
@@ -3148,23 +3149,30 @@ func (x *RemoteConf) GetName() string {
 	return ""
 }
 
-func (x *RemoteConf) GetUrl() string {
+func (x *RemoteConf) GetS3AccessKey() string {
 	if x != nil {
-		return x.Url
+		return x.S3AccessKey
 	}
 	return ""
 }
 
-func (x *RemoteConf) GetAccessKey() string {
+func (x *RemoteConf) GetS3SecretKey() string {
 	if x != nil {
-		return x.AccessKey
+		return x.S3SecretKey
 	}
 	return ""
 }
 
-func (x *RemoteConf) GetSecretKey() string {
+func (x *RemoteConf) GetS3Region() string {
 	if x != nil {
-		return x.SecretKey
+		return x.S3Region
+	}
+	return ""
+}
+
+func (x *RemoteConf) GetS3Endpoint() string {
+	if x != nil {
+		return x.S3Endpoint
 	}
 	return ""
 }
@@ -3803,123 +3811,126 @@ var file_filer_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/weed/shell/command_remote_configure.go b/weed/shell/command_remote_configure.go
new file mode 100644
index 000000000..567143ce1
--- /dev/null
+++ b/weed/shell/command_remote_configure.go
@@ -0,0 +1,142 @@
+package shell
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/golang/protobuf/proto"
+	"io"
+	"regexp"
+)
+
+func init() {
+	Commands = append(Commands, &commandRemoteConfigure{})
+}
+
+type commandRemoteConfigure struct {
+}
+
+func (c *commandRemoteConfigure) Name() string {
+	return "remote.configure"
+}
+
+func (c *commandRemoteConfigure) Help() string {
+	return `remote storage configuration
+
+	# see the current configurations
+	remote.configure
+
+	# set or update a configuration
+	remote.configure -name=cloud1 -type=s3 -access_key=xxx -secret_key=yyy
+
+	# delete one configuration
+	remote.configure -delete -name=cloud1
+
+`
+}
+
+var (
+	isAlpha = regexp.MustCompile(`^[A-Za-z][A-Za-z0-9]*$`).MatchString
+)
+
+func (c *commandRemoteConfigure) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
+
+	conf := &filer_pb.RemoteConf{}
+
+	remoteConfigureCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
+	isDelete := remoteConfigureCommand.Bool("delete", false, "delete one remote storage by its name")
+
+	remoteConfigureCommand.StringVar(&conf.Name, "name", "", "a short name to identify the remote storage")
+	remoteConfigureCommand.StringVar(&conf.Type, "type", "s3", "storage type, currently only support s3")
+
+	remoteConfigureCommand.StringVar(&conf.S3AccessKey, "s3.access_key", "", "s3 access key")
+	remoteConfigureCommand.StringVar(&conf.S3SecretKey, "s3.secret_key", "", "s3 secret key")
+	remoteConfigureCommand.StringVar(&conf.S3Region, "s3.region", "us-east-2", "s3 region")
+	remoteConfigureCommand.StringVar(&conf.S3Endpoint, "s3.endpoint", "", "endpoint for s3-compatible local object store")
+
+	if err = remoteConfigureCommand.Parse(args); err != nil {
+		return nil
+	}
+
+	if conf.Name == "" {
+		return c.listExistingRemoteStorages(commandEnv, writer)
+	}
+
+	if !isAlpha(conf.Name) {
+		return fmt.Errorf("only letters and numbers allowed in name: %v", conf.Name)
+	}
+
+	if *isDelete {
+		return c.deleteRemoteStorage(commandEnv, writer, conf.Name)
+	}
+
+	return c.saveRemoteStorage(commandEnv, writer, conf)
+
+}
+
+func (c *commandRemoteConfigure) listExistingRemoteStorages(commandEnv *CommandEnv, writer io.Writer) error {
+
+	return filer_pb.ReadDirAllEntries(commandEnv, util.FullPath(filer.DirectoryEtcRemote), "", func(entry *filer_pb.Entry, isLast bool) error {
+		if len(entry.Content) == 0 {
+			fmt.Fprintf(writer, "skipping %s\n", entry.Name)
+			return nil
+		}
+		conf := &filer_pb.RemoteConf{}
+
+		if err := proto.Unmarshal(entry.Content, conf); err != nil {
+			return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, entry.Name, err)
+		}
+
+		conf.S3SecretKey = ""
+
+		fmt.Fprintf(writer, "%+v\n", conf)
+
+		return nil
+	})
+
+}
+
+func (c *commandRemoteConfigure) deleteRemoteStorage(commandEnv *CommandEnv, writer io.Writer, storageName string) error {
+
+	return commandEnv.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+
+		request := &filer_pb.DeleteEntryRequest{
+			Directory:            filer.DirectoryEtcRemote,
+			Name:                 storageName,
+			IgnoreRecursiveError: false,
+			IsDeleteData:         true,
+			IsRecursive:          true,
+			IsFromOtherCluster:   false,
+			Signatures:           nil,
+		}
+		_, err := client.DeleteEntry(context.Background(), request)
+
+		if err == nil {
+			fmt.Fprintf(writer, "removed: %s\n", storageName)
+		}
+
+		return err
+
+	})
+
+}
+
+func (c *commandRemoteConfigure) saveRemoteStorage(commandEnv *CommandEnv, writer io.Writer, conf *filer_pb.RemoteConf) error {
+
+	data, err := proto.Marshal(conf)
+	if err != nil {
+		return err
+	}
+
+	if err = commandEnv.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+		return filer.SaveInsideFiler(client, filer.DirectoryEtcRemote, conf.Name, data)
+	}); err != nil && err != filer_pb.ErrNotFound {
+		return err
+	}
+
+	return nil
+
+}