Added solard cli for starting it + adjusted actions

Added child recycler in solard

resources/transport_solard/actions/run.yaml

@@ -2,6 +2,6 @@
   sudo: yes
   tasks:
     - shell: pip install -e /vagrant/solard
-    - shell: start-stop-daemon --stop --make-pidfile --pidfile /tmp/solard.pid --chdir /vagrant/solard --startas /bin/bash -- -c "exec python /vagrant/solard/solard/tcp_server.py > /tmp/solard.log 2>&1"
+    - shell: start-stop-daemon --stop --make-pidfile --pidfile /tmp/solard.pid --chdir /vagrant/solard --startas /bin/bash -- -c "exec /usr/local/bin/solard run --port {{solard_port}} --base tcp > /tmp/solard.log 2>&1"
       ignore_errors: True
-    - shell: start-stop-daemon -b --start --make-pidfile --pidfile /tmp/solard.pid --chdir /vagrant/solard --startas /bin/bash -- -c "exec python /vagrant/solard/solard/tcp_server.py > /tmp/solard.log 2>&1"
+    - shell: start-stop-daemon -b --start --make-pidfile --pidfile /tmp/solard.pid --chdir /vagrant/solard --startas /bin/bash -- -c "exec /usr/local/bin/solard run --port {{solard_port}} --base tcp > /tmp/solard.log 2>&1"

solard/setup.py

@@ -44,5 +44,8 @@ setup(
     packages=find_packages(),
     zip_safe=False,
     install_requires=find_requires(),
-    include_package_data=True
+    include_package_data=True,
+    entry_points={
+          'console_scripts':
+        ['solard = solard.server:cli']}
 )

solard/solard/server.py

@@ -0,0 +1,26 @@
+import click
+
+@click.group()
+def cli():
+    pass
+
+
+def validate_class(ctx, param, value):
+    supported = ('tcp', )
+    if not value in supported:
+        raise click.BadParameter("%r is not one of %r" % (value, supported))
+    return value
+
+
+@cli.command()
+@click.option('--base', default='tcp', callback=validate_class, type=str)
+@click.option('--port', default=5555, type=int)
+def run(base, port):
+    if base == 'tcp':
+        from solard.tcp_server import SolardTCPServer
+        runner = SolardTCPServer.run_solard
+    runner(port)
+
+
+if __name__ == '__main__':
+    cli()

solard/solard/tcp_server.py

@@ -20,7 +20,10 @@
 from SocketServer import ThreadingTCPServer, BaseRequestHandler
 import socket
 
+import threading
+import errno
 import msgpack
+import time
 import struct
 import errno
 import sys
@@ -29,6 +32,7 @@ import pwd
 import os
 
 from types import GeneratorType
+
 from solard.logger import logger
 from solard.core import SolardContext, SolardIface
 from solard.tcp_core import *
@@ -251,7 +255,6 @@ class SolardTCPHandler(object):
 class SolardReqHandler(BaseRequestHandler):
 
     def handle(self):
-        close = True
         sock = self.request
         address = self.client_address
         h = SolardTCPHandler(sock, address)
@@ -263,7 +266,7 @@ class SolardReqHandler(BaseRequestHandler):
                 return
             if auth_state is None:
                 # child forked
-                close = False
+                # we don't wait there, but in recycler
                 return
             while True:
                 if not h.process():
@@ -290,8 +293,28 @@ class SolardTCPServer(ThreadingTCPServer):
         # StreamServer.__init__(self, *args, **kwargs)
         ThreadingTCPServer.__init__(self, *args, **kwargs)
 
+    def dummy_recycle_childs(self):
+        # dummy child recycler, turns each 3 seconds
+        def child_recycler():
+            while True:
+                try:
+                    pid, status = os.waitpid(-1, 0)
+                    logger.debug("Child %r ended with status=%d", pid, status)
+                except OSError as e:
+                    if e.errno != errno.ECHILD:
+                        raise
+                    time.sleep(3)
+        th = threading.Thread(target=child_recycler)
+        th.daemon = True
+        th.start()
+
+    @staticmethod
+    def run_solard(port):
+        s = SolardTCPServer(('0.0.0.0', port), SolardReqHandler)
+        s.dummy_recycle_childs()
+        return s.serve_forever()
+
 
 
 if __name__ == '__main__':
-    s = SolardTCPServer(('0.0.0.0', 5555), SolardReqHandler)
-    s.serve_forever()
+    SolardTCPServer.run_solard(5555)