From 5f0695f7762e3c5ae22eda1773126fa65acfd25f Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sun, 20 Jun 2010 01:42:31 -0700
Subject: [PATCH] Setup new unison scripts and set configs.

---
 config/default.rb                  |  4 +++
 lib/vagrant/config.rb              | 11 ++----
 templates/crontab_entry.erb        |  1 -
 templates/sync.erb                 | 14 --------
 templates/unison/crontab_entry.erb |  1 +
 templates/unison/script.erb        | 56 ++++++++++++++++++++++++++++++
 6 files changed, 64 insertions(+), 23 deletions(-)
 delete mode 100644 templates/crontab_entry.erb
 delete mode 100644 templates/sync.erb
 create mode 100644 templates/unison/crontab_entry.erb
 create mode 100644 templates/unison/script.erb

diff --git a/config/default.rb b/config/default.rb
index f95e48875..518b543f2 100644
--- a/config/default.rb
+++ b/config/default.rb
@@ -28,6 +28,10 @@ Vagrant::Config.run do |config|
   config.vm.share_folder("v-root", "/vagrant", ".")
 
   config.unison.folder_suffix = ".sync"
+  config.unison.script = "/tmp/vagrant-unison"
+  config.unison.options = "-terse -owner -group -batch"
+  config.unison.crontab_entry_file = "/tmp/vagrant-unison-crontab"
+
   # TODO fix these
   # config.vm.sync_opts = "-terse -group -owner -batch -silent"
   # config.vm.sync_script = "/tmp/sync"
diff --git a/lib/vagrant/config.rb b/lib/vagrant/config.rb
index 4622d7466..41a748cf9 100644
--- a/lib/vagrant/config.rb
+++ b/lib/vagrant/config.rb
@@ -79,14 +79,9 @@ module Vagrant
 
     class UnisonConfig < Base
       attr_accessor :folder_suffix
-
-      # TODO figure out what is needed here, the options above were
-      # added after the fact so they are fine. Below needs to be
-      # reanalyzed:
-      attr_accessor :sync_opts
-      attr_accessor :sync_script
-      attr_accessor :sync_crontab_entry_file
-      attr_reader :sync_required
+      attr_accessor :script
+      attr_accessor :options
+      attr_accessor :crontab_entry_file
     end
 
     class VMConfig < Base
diff --git a/templates/crontab_entry.erb b/templates/crontab_entry.erb
deleted file mode 100644
index 6c075d58d..000000000
--- a/templates/crontab_entry.erb
+++ /dev/null
@@ -1 +0,0 @@
-* * * * * <%= scriptname %> '<%= syncopts %>' '<%= guestpath %>' '<%= syncpath %>' '-prefer <%= guestpath %>'
diff --git a/templates/sync.erb b/templates/sync.erb
deleted file mode 100644
index 139eb2afc..000000000
--- a/templates/sync.erb
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/bin/sh
-TIMESTART=`date +%s`
-while [ 1 ]
-do
-  echo 'Syncing...'
-  unison $1 $2 $3 $4
-  TIME=$((`date +%s`-$TIMESTART))
-  echo $TIME
-  if [ $TIME -ge 50 ]
-  then
-    break
-  fi
-  sleep 1
-done
diff --git a/templates/unison/crontab_entry.erb b/templates/unison/crontab_entry.erb
new file mode 100644
index 000000000..c06032358
--- /dev/null
+++ b/templates/unison/crontab_entry.erb
@@ -0,0 +1 @@
+* * * * * <%= scriptname %> '<%= from %>' '<%= to %>' '<%= options %>'
diff --git a/templates/unison/script.erb b/templates/unison/script.erb
new file mode 100644
index 000000000..645b68e9a
--- /dev/null
+++ b/templates/unison/script.erb
@@ -0,0 +1,56 @@
+#!/bin/bash
+#------------------------------------------------------------
+# Author       : John Bender and Mitchell Hashimoto
+# Description  : Runs the `unison` folder synchronization
+#                utility for shared folders.
+#------------------------------------------------------------
+
+#------------------------------------------------------------
+# Argument verification
+#------------------------------------------------------------
+if [ $# -ne 3 ]; then
+    echo "Usage: `basename $0` from_folder to_folder options"
+    exit 1
+fi
+
+#------------------------------------------------------------
+# "Configuration"
+#------------------------------------------------------------
+# TODO Change lockfile to depend on the from/to folder to
+# allow multiple syncs of diff folders to happen at once.
+LOCK_FILE=`basename $0`.lck
+
+#------------------------------------------------------------
+# Am I Running?
+#------------------------------------------------------------
+if [ -f "${LOCK_FILE}" ]; then
+    # The file exists, verify its running and if so exit.
+    OUR_PID=`head -n 1 "${LOCK_FILE}"`
+    TEST_RUNNING=`ps -p ${OUR_PID} | grep ${OUR_PID}`
+
+    if [ "${TEST_RUNNING}" ]; then
+        # The process is running, echo and exit.
+        echo "Unison sync already running. [PID: ${OUR_PID}]"
+        exit 0
+    fi
+fi
+
+# We're not running if we reached this point, so lock
+# it up.
+echo $$ > "${LOCK_FILE}"
+
+#------------------------------------------------------------
+# The Meat
+#------------------------------------------------------------
+while [ 1 ]; do
+  echo 'Syncing...'
+  # TODO check result and output log data... somewhere!
+  unison $1 $2 $3
+  sleep 1
+done
+
+#------------------------------------------------------------
+# Cleanup and Exit
+#------------------------------------------------------------
+rm -f "${LOCK_FILE}"
+exit 0
\ No newline at end of file