log init function to set path and write mode

coordinator/startup.lua

@@ -10,18 +10,27 @@ os.loadAPI("scada-common/comms.lua")
 os.loadAPI("coordinator/config.lua")
 os.loadAPI("coordinator/coordinator.lua")
 
-local COORDINATOR_VERSION = "alpha-v0.1.0"
+local COORDINATOR_VERSION = "alpha-v0.1.1"
 
+local print = util.print
+local println = util.println
 local print_ts = util.print_ts
+local println_ts = util.println_ts
 
+log.init("/log.txt", log.MODE.APPEND)
+
+log._info("========================================")
+log._info("BOOTING coordinator.startup " .. COORDINATOR_VERSION)
+log._info("========================================")
+println(">> RTU " .. COORDINATOR_VERSION .. " <<")
+
+-- mount connected devices
 ppm.mount_all()
 
-local modem = ppm.get_device("modem")
-
-print("| SCADA Coordinator - " .. COORDINATOR_VERSION .. " |")
+local modem = ppm.get_wireless_modem()
 
 -- we need a modem
 if modem == nil then
-    print("Please connect a modem.")
+    println("please connect a wireless modem")
     return
 end

reactor-plc/startup.lua

@@ -12,13 +12,15 @@ os.loadAPI("config.lua")
 os.loadAPI("plc.lua")
 os.loadAPI("threads.lua")
 
-local R_PLC_VERSION = "alpha-v0.4.10"
+local R_PLC_VERSION = "alpha-v0.4.11"
 
 local print = util.print
 local println = util.println
 local print_ts = util.print_ts
 local println_ts = util.println_ts
 
+log.init("/log.txt", log.MODE.APPEND)
+
 log._info("========================================")
 log._info("BOOTING reactor-plc.startup " .. R_PLC_VERSION)
 log._info("========================================")

rtu/startup.lua

@@ -19,13 +19,15 @@ os.loadAPI("dev/boiler_rtu.lua")
 os.loadAPI("dev/imatrix_rtu.lua")
 os.loadAPI("dev/turbine_rtu.lua")
 
-local RTU_VERSION = "alpha-v0.4.8"
+local RTU_VERSION = "alpha-v0.4.9"
 
 local print = util.print
 local println = util.println
 local print_ts = util.print_ts
 local println_ts = util.println_ts
 
+log.init("/log.txt", log.MODE.APPEND)
+
 log._info("========================================")
 log._info("BOOTING rtu.startup " .. RTU_VERSION)
 log._info("========================================")

scada-common/log.lua

@@ -5,10 +5,16 @@
 -- we use extra short abbreviations since computer craft screens are very small
 -- underscores are used since some of these names are used elsewhere (e.g. 'debug' is a lua table)
 
-local LOG_DEBUG = true
-local LOG_PATH = "/log.txt"
+MODE = {
+    APPEND = 0,
+    NEW = 1
+}
 
-local file_handle = fs.open(LOG_PATH, "a")
+local LOG_DEBUG = true
+
+local log_path = "/log.txt"
+local mode = MODE.APPEND
+local file_handle = nil
 
 local _log = function (msg)
     local stamped = os.date("[%c] ") .. msg
@@ -20,7 +26,7 @@ local _log = function (msg)
     end)
 
     -- if we don't have much space, we need to create a new log file
-    local delete_log = fs.getFreeSpace(LOG_PATH) < 100
+    local delete_log = fs.getFreeSpace(log_path) < 100
 
     if not status then
         if result == "Out of space" then
@@ -33,8 +39,8 @@ local _log = function (msg)
     if delete_log then
         -- delete the old log file and open a new one
         file_handle.close()
-        fs.delete(LOG_PATH)
-        file_handle = fs.open(LOG_PATH, "a")
+        fs.delete(log_path)
+        init(log_path, mode)
 
         -- leave a message
         local notif = os.date("[%c] ") .. "recycled log file"
@@ -44,6 +50,17 @@ local _log = function (msg)
     end
 end
 
+function init(path, write_mode)
+    log_path = path
+    mode = write_mode
+
+    if mode == MODE.APPEND then
+        file_handle = fs.open(path, "a")
+    else
+        file_handle = fs.open(path, "w+")
+    end
+end
+
 function _debug(msg, trace)
     if LOG_DEBUG then
         local dbg_info = ""

supervisor/startup.lua

@@ -18,13 +18,15 @@ os.loadAPI("session/svsessions.lua")
 
 os.loadAPI("supervisor.lua")
 
-local SUPERVISOR_VERSION = "alpha-v0.1.8"
+local SUPERVISOR_VERSION = "alpha-v0.1.9"
 
 local print = util.print
 local println = util.println
 local print_ts = util.print_ts
 local println_ts = util.println_ts
 
+log.init("/log.txt", log.MODE.APPEND)
+
 log._info("========================================")
 log._info("BOOTING supervisor.startup " .. SUPERVISOR_VERSION)
 log._info("========================================")