Prevent early notification about all FastSync states

Author: mkalinin

ethereumj-core/src/main/java/org/ethereum/sync/FastSyncManager.java

@@ -725,7 +725,7 @@ public void main() {
 
                         syncSecure();
 
-                        listener.onSyncDone(EthereumListener.SyncState.SECURE);
+                        fireSyncDone(SECURE);
                     case COMPLETE:
                         if (origSyncStage == COMPLETE) {
                             logger.info("FastSync: SECURE sync was completed prior to this run, proceeding with next stage...");
@@ -735,11 +735,7 @@ public void main() {
 
                         syncBlocksReceipts();
 
-                        // prevent early switch to COMPLETE state
-                        syncManager.setSyncDoneType(EthereumListener.SyncState.COMPLETE);
-                        if (syncManager.isSyncDone()) {
-                            listener.onSyncDone(EthereumListener.SyncState.COMPLETE);
-                        }
+                        fireSyncDone(COMPLETE);
                 }
                 logger.info("FastSync: Full sync done.");
             } catch (InterruptedException ex) {
@@ -755,6 +751,14 @@ public void main() {
         }
     }
 
+    private void fireSyncDone(EthereumListener.SyncState state) {
+        // prevent early state notification when sync is not yet done
+        syncManager.setSyncDoneType(state);
+        if (syncManager.isSyncDone()) {
+            listener.onSyncDone(state);
+        }
+    }
+
     public boolean isFastSyncInProgress() {
         return fastSyncInProgress;
     }