command/server: load config from flags

command/server.go

@@ -1,8 +1,10 @@
 package command
 
 import (
+	"fmt"
 	"strings"
 
+	"github.com/hashicorp/vault/command/server"
 	"github.com/hashicorp/vault/helper/flag-slice"
 )
 
@@ -28,6 +30,23 @@ func (c *ServerCommand) Run(args []string) int {
 	}
 
 	// Load the configuration
+	var config *server.Config
+	for _, path := range configPath {
+		current, err := server.LoadConfig(path)
+		if err != nil {
+			c.Ui.Error(fmt.Sprintf(
+				"Error loading configuration from %s: %s", path, err))
+			return 1
+		}
+
+		if config == nil {
+			config = current
+		} else {
+			config = config.Merge(current)
+		}
+	}
+
+	// Initialize the listeners
 
 	return 0
 }

command/server/config.go

@@ -56,6 +56,21 @@ func (c *Config) Merge(c2 *Config) *Config {
 	return result
 }
 
+// LoadConfig loads the configuration at the given path, regardless if
+// its a file or directory.
+func LoadConfig(path string) (*Config, error) {
+	fi, err := os.Stat(path)
+	if err != nil {
+		return nil, err
+	}
+
+	if fi.IsDir() {
+		return LoadConfigDir(path)
+	} else {
+		return LoadConfigFile(path)
+	}
+}
+
 // LoadConfigFile loads the configuration from the given file.
 func LoadConfigFile(path string) (*Config, error) {
 	// Read the file