From 85042b1cf4e9056760ac7f7f772532303032f0d3 Mon Sep 17 00:00:00 2001
From: David Caruana <david.caruana@alfresco.com>
Date: Wed, 4 Jan 2006 12:53:23 +0000
Subject: [PATCH] Startup message to display VM version and size.  Also display
 warnings if not version 1.5 or max. heap size less than (approx) 500MB.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2072 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
---
 .../descriptor/DescriptorServiceImpl.java     | 38 ++++++++++++++++---
 1 file changed, 32 insertions(+), 6 deletions(-)

diff --git a/source/java/org/alfresco/repo/descriptor/DescriptorServiceImpl.java b/source/java/org/alfresco/repo/descriptor/DescriptorServiceImpl.java
index 18eb9f3291..9480d291ea 100644
--- a/source/java/org/alfresco/repo/descriptor/DescriptorServiceImpl.java
+++ b/source/java/org/alfresco/repo/descriptor/DescriptorServiceImpl.java
@@ -134,6 +134,9 @@ public class DescriptorServiceImpl implements DescriptorService, ApplicationList
         return repoDescriptor;
     }
 
+    /**
+     * Initialise Descriptors
+     */
     public void init()
     {
         // initialise descriptors
@@ -156,13 +159,36 @@ public class DescriptorServiceImpl implements DescriptorService, ApplicationList
         {
             if (serverDescriptor != null)
             {
-                // log output of version initialised
-                String serverVersion = serverDescriptor.getVersion();
-                String serverEdition = serverDescriptor.getEdition();
-                String repoVersion = repoDescriptor.getVersion();
+                // log output of VM stats
+                Map properties = System.getProperties();
+                String version = (properties.get("java.runtime.version") == null) ? "unknown" : (String)properties.get("java.runtime.version");
+                long maxHeap = Runtime.getRuntime().maxMemory();
+                float maxHeapMB = maxHeap / 1024l;
+                maxHeapMB = maxHeapMB / 1024l;
+                if (logger.isInfoEnabled())
+                {
+                    logger.info(String.format("Alfresco JVM - v%s; maximum heap size %.3fMB", version, maxHeapMB));
+                }
+                if (logger.isWarnEnabled())
+                {
+                    if (version.startsWith("1.2") || version.startsWith("1.3") || version.startsWith("1.4"))
+                    {
+                        logger.warn(String.format("Alfresco JVM - WARNING - v1.5 is required; currently using v%s", version));
+                    }
+                    if (maxHeapMB < 500)
+                    {
+                        logger.warn(String.format("Alfresco JVM - WARNING - maximum heap size %.3fMB is less than recommended 512MB", maxHeapMB));
+                    }
+                }
                 
-                if (logger.isInfoEnabled())                
-                    logger.info("Alfresco started (" + serverEdition + ") - v" + serverVersion + "; repository v" + repoVersion);
+                // log output of version initialised
+                if (logger.isInfoEnabled())
+                {
+                    String serverEdition = serverDescriptor.getEdition();
+                    String serverVersion = serverDescriptor.getVersion();
+                    String repoVersion = repoDescriptor.getVersion();
+                    logger.info(String.format("Alfresco started (%s) - v%s; repository v%s", serverEdition, serverVersion, repoVersion));
+                }
             }
         }
     }