Use in-memory storage for browser environments

0xProject · Aug 20, 2019 · b636812 · b636812
1 parent 405555a
commit b636812
Show file tree

Hide file tree

Showing 4 changed files with 37 additions and 26 deletions.
diff --git a/browser/index.html b/browser/index.html
@@ -3,18 +3,6 @@
 <head>
 	<meta charset="utf-8">
 	<title>0x Mesh in the browser</title>
-	<script src="resources/browserfs-1.4.3.js"></script>
-	<script>
-		BrowserFS.configure({
-			fs: "LocalStorage",
-		}, function(e) {
-			if (e) {
-				throw e;
-			}
-		});
-		// In browsers, goleveldb expects the global variable "browserFS" to be set.
-		window.browserFS = BrowserFS.BFSRequire('fs');
-	</script>
 	<script src="resources/wasm_exec.js"></script>
 	<script>
 		const go = new Go();
@@ -24,7 +12,5 @@
 	</script>
 </head>
 <body>
-	<div id="qunit"></div>
-	<div id="qunit-fixture"></div>
 </body>
 </html>
diff --git a/db/db.go b/db/db.go
@@ -36,18 +36,6 @@ type DB struct {
 	colLock         sync.Mutex
 }
 
-// Open creates a new database using the given file path for permanent storage.
-// It is not safe to have multiple DBs using the same file path.
-func Open(path string) (*DB, error) {
-	ldb, err := leveldb.OpenFile(path, nil)
-	if err != nil {
-		return nil, err
-	}
-	return &DB{
-		ldb: ldb,
-	}, nil
-}
-
 // Close closes the database. It is not safe to call Close if there are any
 // other methods that have not yet returned. It is safe to call Close multiple
 // times.

diff --git a/db/open.go b/db/open.go
@@ -0,0 +1,17 @@
+// +build !js
+
+package db
+
+import "github.com/syndtr/goleveldb/leveldb"
+
+// Open creates a new database using the given file path for permanent storage.
+// It is not safe to have multiple DBs using the same file path.
+func Open(path string) (*DB, error) {
+	ldb, err := leveldb.OpenFile(path, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &DB{
+		ldb: ldb,
+	}, nil
+}
diff --git a/db/open_js.go b/db/open_js.go
@@ -0,0 +1,20 @@
+// +build js,wasm
+
+package db
+
+import (
+	"github.com/syndtr/goleveldb/leveldb"
+	"github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+// Open creates a new database using in-memory storage. The given file path is
+// ignored.
+func Open(path string) (*DB, error) {
+	ldb, err := leveldb.Open(storage.NewMemStorage(), nil)
+	if err != nil {
+		return nil, err
+	}
+	return &DB{
+		ldb: ldb,
+	}, nil
+}