When the slave has less than 1GB available disk space, Hudson will...

When the slave has less than 1GB available disk space, Hudson will automatically mark the node as temporarily offline.


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@10548 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/node_monitors/DiskSpaceMonitor.java

 package hudson.node_monitors;
 
 import hudson.FilePath;
-import hudson.Util;
 import hudson.FilePath.FileCallable;
+import hudson.Util;
 import hudson.model.Computer;
-import hudson.model.Descriptor;
 import hudson.remoting.VirtualChannel;
+import net.sf.json.JSONObject;
 import org.kohsuke.stapler.StaplerRequest;
 
 import java.io.File;
 import java.io.IOException;
 import java.math.BigDecimal;
-
-import net.sf.json.JSONObject;
+import java.util.logging.Logger;
 
 /**
  * Checks available disk space of the node.
@@ -49,7 +48,16 @@ public class DiskSpaceMonitor extends NodeMonitor {
             FilePath p = c.getNode().getRootPath();
             if(p==null) return null;
 
-            return p.act(new GetUsableSpace());
+            Long size = p.act(new GetUsableSpace());
+            if(size!=null && size!=0 && size/(1024*1024*1024)==0) {
+                // TODO: this scheme should be generalized, so that Hudson can remember why it's marking the node
+                // as offline, as well as allowing the user to force Hudson to use it.
+                if(!c.isTemporarilyOffline()) {
+                    LOGGER.warning("Making "+c.getName()+" offline temporarily due to the lack of disk space");
+                    c.setTemporarilyOffline(true);
+                }
+            }
+            return size;
         }
 
         public String getDisplayName() {
@@ -77,4 +85,6 @@ public class DiskSpaceMonitor extends NodeMonitor {
     static {
         LIST.add(DESCRIPTOR);
     }
+
+    private static final Logger LOGGER = Logger.getLogger(DiskSpaceMonitor.class.getName());
 }