add "weed scaffold" command

weed/command/command.go

@@ -19,6 +19,7 @@ var Commands = []*Command{
 	cmdS3,
 	cmdUpload,
 	cmdDownload,
+	cmdScaffold,
 	cmdShell,
 	cmdVersion,
 	cmdVolume,

weed/command/filer.go

@@ -5,7 +5,6 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/server"
@@ -68,9 +67,9 @@ var cmdFiler = &Command{
 
 	The configuration file "filer.toml" is read from ".", "$HOME/.seaweedfs/", or "/etc/seaweedfs/", in that order.
 
-	The following are example filer.toml configuration file.
+	The example filer.toml configuration file can be generated by "weed scaffold filer"
 
-` + filer2.FILER_TOML_EXAMPLE + "\n",
+`,
 }
 
 func runFiler(cmd *Command, args []string) bool {

weed/command/scaffold.go

@@ -1,4 +1,50 @@
-# An example TOML config file for SeaweedFS filer store
+package command
+
+import (
+	"io/ioutil"
+	"path/filepath"
+)
+
+func init() {
+	cmdScaffold.Run = runScaffold // break init cycle
+}
+
+var cmdScaffold = &Command{
+	UsageLine: "scaffold [filer]",
+	Short:     "generate basic configuration files",
+	Long: `Generate filer.toml with all possible configurations for you to customize.
+
+  `,
+}
+
+var (
+	outputPath = cmdScaffold.Flag.String("output", "", "if not empty, save the configuration file to this directory")
+	config     = cmdScaffold.Flag.String("config", "filer", "the configuration file to generate")
+)
+
+func runScaffold(cmd *Command, args []string) bool {
+
+	content := ""
+	switch *config {
+	case "filer":
+		content = FILER_TOML_EXAMPLE
+	}
+	if content == "" {
+		println("need a valid -config option")
+		return false
+	}
+
+	if *outputPath != "" {
+		ioutil.WriteFile(filepath.Join(*outputPath, *config+".toml"), []byte(content), 0x755)
+	} else {
+		println(content)
+	}
+	return true
+}
+
+const (
+	FILER_TOML_EXAMPLE = `
+# A sample TOML config file for SeaweedFS filer store
 
 [memory]
 # local in memory, mostly for testing purpose
@@ -6,7 +52,7 @@ enabled = false
 
 [leveldb]
 # local on disk, mostly for simple single-machine setup, fairly scalable
-enabled = true
+enabled = false
 dir = "."					# directory to store level db files
 
 ####################################################
@@ -21,7 +67,7 @@ dir = "."					# directory to store level db files
 #   meta        BLOB,
 #   PRIMARY KEY (dirhash, name)
 # ) DEFAULT CHARSET=utf8;
-enabled = false
+enabled = true
 hostname = "localhost"
 port = 3306
 username = "root"
@@ -62,7 +108,7 @@ hosts=[
 ]
 
 [redis]
-enabled = false
+enabled = true
 address  = "localhost:6379"
 password = ""
 db = 0
@@ -73,6 +119,7 @@ addresses = [
     "localhost:6379",
 ]
 
+
 ####################################################
 # notification
 # sends filer updates for each file to an external message queue
@@ -87,3 +134,5 @@ hosts = [
 ]
 topic = "seaweedfs_filer"
 
+`
+)

weed/filer2/configuration.go

@@ -7,85 +7,6 @@ import (
 	"github.com/spf13/viper"
 )
 
-const (
-	FILER_TOML_EXAMPLE = `
-# A sample TOML config file for SeaweedFS filer store
-
-[memory]
-# local in memory, mostly for testing purpose
-enabled = false
-
-[leveldb]
-# local on disk, mostly for simple single-machine setup, fairly scalable
-enabled = false
-dir = "."					# directory to store level db files
-
-####################################################
-# multiple filers on shared storage, fairly scalable
-####################################################
-
-[mysql]
-# CREATE TABLE IF NOT EXISTS filemeta (
-#   dirhash     BIGINT        COMMENT 'first 64 bits of MD5 hash value of directory field',
-#   name        VARCHAR(1000) COMMENT 'directory or file name',
-#   directory   VARCHAR(4096) COMMENT 'full path to parent directory',
-#   meta        BLOB,
-#   PRIMARY KEY (dirhash, name)
-# ) DEFAULT CHARSET=utf8;
-enabled = true
-hostname = "localhost"
-port = 3306
-username = "root"
-password = ""
-database = ""              # create or use an existing database
-connection_max_idle = 2
-connection_max_open = 100
-
-[postgres]
-# CREATE TABLE IF NOT EXISTS filemeta (
-#   dirhash     BIGINT,
-#   name        VARCHAR(1000),
-#   directory   VARCHAR(4096),
-#   meta        bytea,
-#   PRIMARY KEY (dirhash, name)
-# );
-enabled = false
-hostname = "localhost"
-port = 5432
-username = "postgres"
-password = ""
-database = ""              # create or use an existing database
-sslmode = "disable"
-connection_max_idle = 100
-connection_max_open = 100
-
-[cassandra]
-# CREATE TABLE filemeta (
-#    directory varchar,
-#    name varchar,
-#    meta blob,
-#    PRIMARY KEY (directory, name)
-# ) WITH CLUSTERING ORDER BY (name ASC);
-enabled = false
-keyspace="seaweedfs"
-hosts=[
-	"localhost:9042",
-]
-
-[redis]
-enabled = true
-address  = "localhost:6379"
-password = ""
-db = 0
-
-[redis_cluster]
-enabled = false
-addresses = [
-    "localhost:6379",
-]
-
-`
-)
 
 var (
 	Stores []FilerStore