control server

examples/tunasync.conf

@@ -10,6 +10,7 @@ concurrent = 2
 # interval in minutes
 interval = 1
 max_retry = 2
+ctrl_addr = "/tmp/tunasync.sock"
 
 [btrfs]
 service_dir = "{mirror_root}/_current/{mirror_name}"

tunasync/clt_server.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python2
+# -*- coding:utf-8 -*-
+import socket
+import os
+import json
+
+
+class ControlServer(object):
+
+    def __init__(self, address, mgr_chan, cld_chan):
+        self.address = address
+        self.mgr_chan = mgr_chan
+        self.cld_chan = cld_chan
+        try:
+            os.unlink(self.address)
+        except OSError:
+            if os.path.exists(self.address):
+                raise Exception("file exists: {}".format(self.address))
+
+        self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        self.sock.bind(self.address)
+
+        print("Control Server listening on: {}".format(self.address))
+        self.sock.listen(1)
+
+    def serve_forever(self):
+        while 1:
+            conn, _ = self.sock.accept()
+
+            try:
+                length = ord(conn.recv(1))
+                content = conn.recv(length)
+                cmd = json.loads(content)
+                self.mgr_chan.put(("CMD", (cmd['cmd'], cmd['target'])))
+            except Exception as e:
+                print(e)
+                res = "Invalid Command"
+            else:
+                res = self.cld_chan.get()
+
+            conn.sendall(chr(len(res)) + res)
+            conn.close()
+
+
+def run_control_server(address, mgr_chan, cld_chan):
+    cs = ControlServer(address, mgr_chan, cld_chan)
+    cs.serve_forever()
+
+# vim: ts=4 sw=4 sts=4 expandtab

tunasync/jobs.py

@@ -29,7 +29,7 @@ def run_job(sema, child_q, manager_q, provider, **settings):
         aquired = True
 
         status = "syncing"
-        manager_q.put((provider.name, status))
+        manager_q.put(("UPDATE", (provider.name, status)))
         try:
             for hook in provider.hooks:
                 hook.before_job(name=provider.name)
@@ -66,12 +66,12 @@ def run_job(sema, child_q, manager_q, provider, **settings):
             provider.name, provider.interval
         ))
 
-        manager_q.put((provider.name, status))
+        manager_q.put(("UPDATE", (provider.name, status)))
 
         try:
             msg = child_q.get(timeout=provider.interval * 60)
             if msg == "terminate":
-                manager_q.put((provider.name, "QUIT"))
+                manager_q.put(("CONFIG_ACK", (provider.name, "QUIT")))
                 break
         except Queue.Empty:
             pass

tunasync/tunasync.py

@@ -9,6 +9,7 @@ from . import jobs
 from .hook import JobHook
 from .mirror_config import MirrorConfig
 from .status_manager import StatusManager
+from .clt_server import run_control_server
 
 
 class TUNASync(object):
@@ -46,6 +47,15 @@ class TUNASync(object):
         self.status_file = self._settings["global"]["status_file"]
         self.status_manager = StatusManager(self, self.status_file)
 
+        self.ctrl_addr = self._settings["global"]["ctrl_addr"]
+        self.ctrl_channel = Queue()
+        p = Process(
+            target=run_control_server,
+            args=(self.ctrl_addr, self.channel, self.ctrl_channel),
+        )
+        p.start()
+        self.processes["CTRL_SERVER"] = (self.ctrl_channel, p)
+
     def add_hook(self, h):
         assert isinstance(h, JobHook)
         self._hooks.append(h)
@@ -94,20 +104,7 @@ class TUNASync(object):
         signal.signal(signal.SIGUSR1, self.reload_mirrors)
         signal.signal(signal.SIGUSR2, self.reload_mirrors_force)
 
-        while 1:
-            try:
-                name, status = self.channel.get()
-            except IOError:
-                continue
-
-            if status == "QUIT":
-                print("New configuration applied to {}".format(name))
-                self.run_provider(name)
-            else:
-                try:
-                    self.status_manager.update_status(name, status)
-                except Exception as e:
-                    print(e)
+        self.run_forever()
 
     def run_provider(self, name):
         if name not in self.providers:
@@ -170,5 +167,59 @@ class TUNASync(object):
                 print("New mirror: {}".format(name))
                 self.run_provider(name)
 
+    def run_forever(self):
+        while 1:
 
+            try:
+                msg_hdr, msg_body = self.channel.get()
+            except IOError:
+                continue
+
+            if msg_hdr == "UPDATE":
+                name, status = msg_body
+                try:
+                    self.status_manager.update_status(name, status)
+                except Exception as e:
+                    print(e)
+
+            elif msg_hdr == "CONFIG_ACK":
+                name, status = msg_body
+                if status == "QUIT":
+                    print("New configuration applied to {}".format(name))
+                    self.run_provider(name)
+
+            elif msg_hdr == "CMD":
+                cmd, name = msg_body
+                if name not in self.mirrors:
+                    self.ctrl_channel.put("Invalid target")
+                    continue
+
+                if cmd == "restart":
+                    _, p = self.processes[name]
+                    p.terminate()
+                    self.run_provider(name)
+                    res = "Restarted Job: {}".format(name)
+
+                elif cmd == "stop":
+                    if name not in self.processes:
+                        res = "{} not running".format(name)
+                        self.ctrl_channel.put(res)
+                        continue
+
+                    _, p = self.processes.pop(name)
+                    p.terminate()
+                    res = "Stopped Job: {}".format(name)
+
+                elif cmd == "start":
+                    if name in self.processes:
+                        res = "{} already running".format(name)
+                        self.ctrl_channel.put(res)
+                        continue
+
+                    self.run_provider(name)
+                    res = "Started Job: {}".format(name)
+                else:
+                    res = "Invalid command"
+
+                self.ctrl_channel.put(res)
 # vim: ts=4 sw=4 sts=4 expandtab

tunasynctl.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python2
+# -*- coding:utf-8 -*-
+import sys
+import socket
+import argparse
+import json
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(prog="tunasynctl")
+    parser.add_argument("-s", "--socket",
+                        default="/var/run/tunasync.sock", help="socket file")
+    parser.add_argument("command", help="command")
+    parser.add_argument("target", help="target")
+
+    args = parser.parse_args()
+
+    sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+
+    try:
+        sock.connect(args.socket)
+    except socket.error as msg:
+        print(msg)
+        sys.exit(1)
+
+    pack = json.dumps({
+        'cmd': args.command,
+        'target': args.target,
+    })
+
+    try:
+        sock.sendall(chr(len(pack)) + pack)
+        length = ord(sock.recv(1))
+        print(sock.recv(length))
+
+    except Exception as e:
+        print(e)
+    finally:
+        sock.close()
+
+# vim: ts=4 sw=4 sts=4 expandtab