log some info on successful file uploads

lib/commands/upload.js

@@ -75,8 +75,21 @@ Upload.upload = function (Env, safeKey, chunk, cb) {
     Env.blobStore.upload(safeKey, chunk, cb);
 };
 
+var reportStatus = function (Env, label, safeKey, err, id) {
+    var data = {
+        safeKey: safeKey,
+        err: err && err.message || err,
+        id: id,
+    };
+    var method = err? 'error': 'info';
+    Env.Log[method](label, data);
+};
+
 Upload.complete = function (Env, safeKey, arg, cb) {
-    Env.blobStore.complete(safeKey, arg, cb);
+    Env.blobStore.complete(safeKey, arg, function (err, id) {
+        reportStatus(Env, 'UPLOAD_COMPLETE', safeKey, err, id);
+        cb(err, id);
+    });
 };
 
 Upload.cancel = function (Env, safeKey, arg, cb) {
@@ -84,6 +97,9 @@ Upload.cancel = function (Env, safeKey, arg, cb) {
 };
 
 Upload.complete_owned = function (Env, safeKey, arg, cb) {
-    Env.blobStore.completeOwned(safeKey, arg, cb);
+    Env.blobStore.completeOwned(safeKey, arg, function (err, id) {
+        reportStatus(Env, 'UPLOAD_COMPLETE_OWNED', safeKey, err, id);
+        cb(err, id);
+    });
 };