Improved logic in new head state creation.

[simantics/platform.git] / bundles / org.simantics.acorn / src / org / simantics / acorn / ClusterManager.java

diff --git a/bundles/org.simantics.acorn/src/org/simantics/acorn/ClusterManager.java b/bundles/org.simantics.acorn/src/org/simantics/acorn/ClusterManager.java
index e0bcbebf7421906a61cd13ff626719aac0f00ef0..9725ffe8da2df0aabb169b301b955642781205dd 100644 (file)
--- a/bundles/org.simantics.acorn/src/org/simantics/acorn/ClusterManager.java
+++ b/bundles/org.simantics.acorn/src/org/simantics/acorn/ClusterManager.java
@@ -263,11 +263,11 @@ public class ClusterManager {
                // Nothing has been written => no need to do anything
                long amountOfFiles = countFiles(workingDirectory);
                if(!fullSave && amountOfFiles == 0) {
-    //             System.err.println("amountOfFiles < 3");
+                       //LOGGER.info("makeSnapshot: " + amountOfFiles + " files, skipping snapshot");
                    return false;
                }
     
-               LOGGER.info("makeSnapshot");
+               LOGGER.info("makeSnapshot: start with " + amountOfFiles + " files");
     
                // Schedule writing of all data to disk
             refreshHeadState();
@@ -287,13 +287,11 @@ public class ClusterManager {
 
                persistHeadState();
 
-               if (fullSave)
-                   mainState.save(dbFolder);
-    
-               amountOfFiles = countFiles(workingDirectory);
-               
-               LOGGER.info(" -finished: amount of files is {}", amountOfFiles);
-    
+               if (LOGGER.isInfoEnabled()) {
+                       amountOfFiles = countFiles(workingDirectory);
+                       LOGGER.info(" -finished: amount of files is {}", amountOfFiles);
+               }
+
                workingDirectory = dbFolder.resolve(Integer.toString(mainState.headDir));
                if (!Files.exists(workingDirectory)) {
                    Files.createDirectories(workingDirectory);
@@ -408,35 +406,39 @@ public class ClusterManager {
                lastSessionDirectory = dbFolder.resolve(Integer.toString(mainState.headDir - 1));
                
                // Head State
-               try {
-            state = HeadState.load(lastSessionDirectory);
-        } catch (InvalidHeadStateException e) {
-            // For backwards compatibility only!
-            Throwable cause = e.getCause();
-            if (cause instanceof Throwable) {
-                try {
-                    org.simantics.db.javacore.HeadState oldState = org.simantics.db.javacore.HeadState.load(lastSessionDirectory);
-                    
-                    HeadState newState = new HeadState();
-                    newState.clusters = oldState.clusters;
-                    newState.cs = oldState.cs;
-                    newState.files = oldState.files;
-                    newState.stream = oldState.stream;
-                    newState.headChangeSetId = oldState.headChangeSetId;
-                    newState.reservedIds = oldState.reservedIds;
-                    newState.transactionId = oldState.transactionId;
-                    state = newState;
-                } catch (InvalidHeadStateException e1) {
-                    throw new IOException("Could not load HeadState due to corruption", e1);
-                }
-            } else {
-                // This should never happen as MainState.load() checks the integrity
-                // of head.state files and rolls back in cases of corruption until a
-                // consistent state is found (could be case 0 - initial db state)
-                // IF this does happen something is completely wrong
-                throw new IOException("Could not load HeadState due to corruption", e);
-            }
-        }
+               if (mainState.isInitial()) {
+                       state = new HeadState();
+               } else {
+                       try {
+                   state = HeadState.load(lastSessionDirectory);
+               } catch (InvalidHeadStateException e) {
+                   // For backwards compatibility only!
+                   Throwable cause = e.getCause();
+                   if (cause instanceof Throwable) {
+                       try {
+                           org.simantics.db.javacore.HeadState oldState = org.simantics.db.javacore.HeadState.load(lastSessionDirectory);
+                           
+                           HeadState newState = new HeadState();
+                           newState.clusters = oldState.clusters;
+                           newState.cs = oldState.cs;
+                           newState.files = oldState.files;
+                           newState.stream = oldState.stream;
+                           newState.headChangeSetId = oldState.headChangeSetId;
+                           newState.reservedIds = oldState.reservedIds;
+                           newState.transactionId = oldState.transactionId;
+                           state = newState;
+                       } catch (InvalidHeadStateException e1) {
+                           throw new IOException("Could not load HeadState due to corruption", e1);
+                       }
+                   } else {
+                       // This should never happen as MainState.load() checks the integrity
+                       // of head.state files and rolls back in cases of corruption until a
+                       // consistent state is found (could be case 0 - initial db state)
+                       // IF this does happen something is completely wrong
+                       throw new IOException("Could not load HeadState due to corruption", e);
+                   }
+               }
+               }
                try {
                workingDirectory = dbFolder.resolve(Integer.toString(mainState.headDir));
                Files.createDirectories(workingDirectory);