* server abstration

* default config file value

onlyone/__init__.py

@@ -1,11 +1,27 @@
+from distutils.command.config import config
 import os
 import psutil
 import logging
+import yaml
 from typing import List
+from onlyone import namedpipes
 
+DEFAULT_CONFIG_PATH = "/etc/config.yaml"
 
 log = logging.getLogger(__name__)
 
+def config_file_to_dict(path:str):
+    if not os.path.isfile(path):
+        log.error("missing file " + path)
+        raise "missing file " + path
+        return
+    log.info("trying to read file : " +  path)
+    configTxt = open(path, "r").read()
+    log.info("config file content : " +  configTxt)
+    log.info("trying read yaml")
+    retval = yaml.safe_load(configTxt)
+    return retval
+
 def __is_process(cmd:str, arr):
     item = " ".join(arr)
     #log.info("[onlyone][startprocess] -> " + item + " ends with " + cmd) 
@@ -64,20 +80,6 @@ def killprocesses(killcmds:List):
     return __killprocesses(killcmds, psutil.process_iter())
     
 
-# def __forceoneprocessinstance(cmd:str, processes:List):
-#     found = False
-#     for proc in processes:
-#         if __is_process(cmd, proc.cmdline()):
-#             if found:
-#                 proc.kill()
-#                 log.info("[onlyone][__forceoneprocessinstance] -> processed killed : " + proc.name + "(" + proc.id  + ")")
-#             else :
-#                 found = True
-#     if not found:
-#         startprocess(cmd)
-
-# def forceoneprocessinstance(cmd:str):
-#     return __forceoneprocessinstance(cmd, psutil.process_iter())
 
 def onlyone(cmd:str, killcmds:list):
     log.info("[onlyone][onlyone] -> invoked start " + cmd + ", kill " + str(killcmds))
@@ -126,3 +128,11 @@ class Manager:
         self._current = item["key"]
 
 
+class Server:
+    def __init__(self, configPath):
+        self.manager = Manager()
+        if(configPath != None and configPath!=""):
+            configDict = config_file_to_dict(configPath)
+            self.manager.load(configDict, True)
+        self.npserver = namedpipes.Server(self.manager)
+   

onlyone/__main__.py

@@ -1,3 +1,4 @@
+from asyncio.base_events import Server
 import logging
 import argparse
 from types import new_class
@@ -21,27 +22,10 @@ args = parser.parse_args()
 
 log.info("arguments - " + str(sys.argv))
 log.info("Current Path:" + os.getcwd())
-manager=None
-if args.configFile:
-   manager = onlyone.Manager()
-   if os.path.isfile(args.configFile):
-       log.info("trying to read file : " +  args.configFile)
-       configTxt = open(args.configFile, "r").read()
-       log.info("config file content : " +  configTxt)
-       log.info("trying read yaml")
-       configDict = yaml.safe_load(configTxt)
-       manager.load(configDict, True)
-   else:
-       log.error("Current Path:" + os.getcwd())
-       log.error("File dont exists:" + args.configfile)
-
 if args.server:
-    if(manager==None):
+    configPath = onlyone.DEFAULT_CONFIG_PATH
-     log.error("server mode selected, but manager not loaded maybe missing --configFile")
+    if args.configFile:
-    else:
+       configPath = args.configFile
-        npServer = None
+    server = onlyone.Server(configPath)
-        try:
+    
-            npServer = onlyone.namedpipes.Server(manager, "/tmp/onlyone_fifo")
+    
-            log.info("server loaded...")
-        except KeyboardInterrupt:
-            log.info("KeyboardInterrupt")

onlyone/namedpipes/__init__.py

@@ -2,24 +2,61 @@
 import os
 import errno
 import logging
+from signal import default_int_handler
 import threading
+import subprocess
+
+FIFO_PATH="/tmp/onlyone_fifo"
+SECURITY_GROUP="onlyone"
 
 log = logging.getLogger(__name__)
 
+def securitygroup_check(groupName:str):
+    if not securitygroup_exists(groupName):
+        securitygroup_create(groupName)
+
+def securitygroup_create(groupName:str):
+     try:
+         
+         subprocess.run(['groupadd ', 'groupName'])      
+     except:
+         print(f"Failed to create group " + groupName)                     
+         raise
+
+def securityfifo_checkpermissions(fifoPath:str, groupName:str):
+     try:
+         
+         subprocess.run(['chown', 'root:' + groupName, fifoPath]) 
+         subprocess.run(['chmod', '660', fifoPath])     
+     except:
+         print(f"Failed to set permissions")                     
+         raise
+
+def securitygroup_exists(groupName:str):
+    with open("/etc/group", "r") as groupFile:
+        for line in groupFile:
+            if line.startswith(groupName):
+                return True
+    return False
+
+def createfifo(path):
+    try:
+        os.mkfifo(path)
+    except OSError as oe: 
+        if oe.errno != errno.EEXIST:
+            raise
+
 
 
 class Server:
-    def __init__(self, manager, fifoname:str):
+    def __init__(self, manager):
         self.manager=manager
-        self__fifoname=fifoname
+        self__fifoname=""
-        try:
+        securitygroup_check(SECURITY_GROUP)
-            os.mkfifo(fifoname)
+        createfifo(FIFO_PATH)
-        except OSError as oe: 
+        securityfifo_checkpermissions(FIFO_PATH, SECURITY_GROUP)
-            if oe.errno != errno.EEXIST:
-                raise
-        
         readTask = ReadTask(self)        
-        self.__readThread = threading.Thread(target=readTask.run, args = (fifoname,) )
+        self.__readThread = threading.Thread(target=readTask.run, args = (FIFO_PATH,) )
         self.__readThread.start()
 
     def kill(self):