From b4e846e4206e688050b659f2d66581d26e3dc1ce Mon Sep 17 00:00:00 2001
From: Tuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Date: Wed, 17 May 2017 16:26:41 +0300
Subject: [PATCH] Check head.state file existence before validating its
 integrity

This prevents unnecessary NoSuchFileExceptions from being logged at
startup.

refs #7124

Change-Id: I500c937ec8894f6c97dcfe73b01efc4adc9b59a6
---
 .../org.simantics.acorn/src/org/simantics/acorn/HeadState.java  | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bundles/org.simantics.acorn/src/org/simantics/acorn/HeadState.java b/bundles/org.simantics.acorn/src/org/simantics/acorn/HeadState.java
index ea54a4185..106134264 100644
--- a/bundles/org.simantics.acorn/src/org/simantics/acorn/HeadState.java
+++ b/bundles/org.simantics.acorn/src/org/simantics/acorn/HeadState.java
@@ -99,6 +99,8 @@ public class HeadState {
     }
 
     public static boolean validateHeadStateIntegrity(Path headState) {
+        if (!Files.exists(headState))
+            return false;
         try {
             byte[] bytes = Files.readAllBytes(headState);
             MessageDigest sha1 = MessageDigest.getInstance(SHA_1);
-- 
2.47.1