adding waitfor for the current branch process

Author: tulinkry

src/org/opensolaris/opengrok/history/GitRepository.java

@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.Locale;
 import java.util.TreeSet;
+import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.util.regex.Matcher;
@@ -675,15 +676,27 @@ String determineCurrentVersion() throws IOException {
         cmd.add("-1");
         cmd.add("--pretty=%cd: %h %an %s");
         cmd.add("--date=format:%Y-%m-%d %H:%M");
+
         ProcessBuilder pb = new ProcessBuilder(cmd);
         pb.directory(directory);
-        Process process;
-        process = pb.start();
+        Process process = pb.start();
 
-        try (BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
-            if ((line = in.readLine()) != null) {
-                line = line.trim();
+        try {
+            process.waitFor(15, TimeUnit.SECONDS);
+
+            if (process.exitValue() != 0) {
+                throw new IOException("Process exited with non zero exit code");
+            }
+
+            try (BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+                if ((line = in.readLine()) != null) {
+                    line = line.trim();
+                }
             }
+        } catch (InterruptedException ex) {
+            LOGGER.log(Level.FINE, "Unable to determine current version for {} - process timeouted", getDirectoryName());
+        } catch (IOException ex) {
+            LOGGER.log(Level.FINE, "Unable to determine current version for {} - bad exit code", getDirectoryName());
         }
 
         return line;