integration with 'lbu commit'

client must specifically request saving files if server's root file system is tmpfs
web client does this automatically on commit

1 files changed, 16 insertions, 1 deletions

diff --git a/server.lua b/server.lua
index 7168c0e..9a17c44 100644
--- a/server.lua
+++ b/server.lua
@@ -13,6 +13,8 @@ local stringy = require('stringy')
 
 math.randomseed(os.time())
 
+local save_req = os.execute('[ $(stat -f -c "%T" /) = tmpfs ]')
+
 -- TODO shared storage for sessions
 -- TODO expire stale sessions
 local sessions = {}
@@ -98,7 +100,13 @@ return function(env)
 		   until not sessions[sid]
 
 		   sessions[sid] = {user=data.username, last_txn_id=0, txns={}}
-		   return wrap(204, {['X-ACF-Auth-Token']=sid})
+		   return wrap(
+		      204,
+		      {
+			 ['X-ACF-Auth-Token']=sid,
+			 ['X-ACF-Save-Required']=save_req and 1 or 0
+		      }
+		   )
 		end
 		return wrap(401)
 	     end
@@ -115,6 +123,13 @@ return function(env)
 
 	  if not user then return wrap(401) end
 
+	  if path == '/save' then
+	     if not save_req then return wrap(404) end
+	     if method ~= 'POST' then return wrap(405) end
+	     if os.execute('lbu commit') then wrap(204) end
+	     return wrap(500, nil, 'lbu commit failed')
+	  end
+
 	  local success, code, hdr, res = acf.call(
 	     function()
 		if stringy.startswith(path, '/meta/') then