Add basic support for creating a server on wings

server/environment_docker.go

@@ -3,6 +3,7 @@ package server
 import (
 	"bufio"
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"github.com/docker/docker/api/types"
@@ -14,7 +15,6 @@ import (
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/wings/api"
 	"go.uber.org/zap"
-	"golang.org/x/net/context"
 	"io"
 	"os"
 	"strconv"
@@ -385,6 +385,8 @@ func (d *DockerEnvironment) DisableResourcePolling() error {
 
 // Creates a new container for the server using all of the data that is currently
 // available for it. If the container already exists it will be returned.
+//
+// @todo pull the image being requested if it doesn't exist currently.
 func (d *DockerEnvironment) Create() error {
 	ctx := context.Background()
 	cli, err := client.NewClientWithOpts(client.FromEnv)
@@ -394,6 +396,11 @@ func (d *DockerEnvironment) Create() error {
 
 	var oomDisabled = true
 
+	// Ensure the data directory exists before getting too far through this process.
+	if err := d.Server.Filesystem.EnsureDataDirectory(); err != nil {
+		return err
+	}
+
 	// If the container already exists don't hit the user with an error, just return
 	// the current information about it which is what we would do when creating the
 	// container anyways.

server/filesystem.go

@@ -553,3 +553,18 @@ func (fs *Filesystem) ListDirectory(p string) ([]*Stat, error) {
 
 	return out, nil
 }
+
+// Ensures that the data directory for the server instance exists.
+func (fs *Filesystem) EnsureDataDirectory() error {
+	if _, err := os.Stat(fs.Path()); err != nil && !os.IsNotExist(err) {
+		return err
+	} else if err != nil {
+		// Create the server data directory because it does not currently exist
+		// on the system.
+		if err := os.MkdirAll(fs.Path(), 0600); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}