Add more verbose debugging options for accelerate

utilities/accelerate

@@ -85,9 +85,23 @@ PIDFILE = os.path.expanduser("~/.accelerate.pid")
 # which leaves room for the TCP/IP header
 CHUNK_SIZE=10240
 
-def log(msg):
+# FIXME: this all should be moved to module_common, as it's 
+#        pretty much a copy from the callbacks/util code
+DEBUG_LEVEL=0
+def log(msg, cap=0):
+    global DEBUG_LEVEL
+    if cap >= DEBUG_LEVEL:
         syslog.syslog(syslog.LOG_NOTICE|syslog.LOG_DAEMON, msg)
 
+def vv(msg):
+    log(msg, cap=2)
+
+def vvv(msg):
+    log(msg, cap=3)
+
+def vvvv(msg):
+    log(msg, cap=4)
+
 if os.path.exists(PIDFILE):
     try:
         data = int(open(PIDFILE).read())
@@ -114,7 +128,7 @@ def daemonize_self(module, password, port, minutes):
     try:
         pid = os.fork()
         if pid > 0:
-            log("exiting pid %s" % pid)
+            vvv("exiting pid %s" % pid)
             # exit first parent
             module.exit_json(msg="daemonized accelerate on port %s for %s minutes" % (port, minutes))
     except OSError, e:
@@ -134,7 +148,7 @@ def daemonize_self(module, password, port, minutes):
             pid_file = open(PIDFILE, "w")
             pid_file.write("%s" % pid)
             pid_file.close()
-            log("pidfile written")
+            vvv("pidfile written")
             sys.exit(0)
     except OSError, e:
         log("fork #2 failed: %d (%s)" % (e.errno, e.strerror))
@@ -162,52 +176,64 @@ class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
     def recv_data(self):
         header_len = 8 # size of a packed unsigned long long
         data = b""
+        vvvv("in recv_data(), waiting for the header")
         while len(data) < header_len:
             d = self.request.recv(1024)
             if not d:
+                vvv("received nothing, bailing out")
                 return None
             data += d
+        vvvv("in recv_data(), got the header, unpacking")
         data_len = struct.unpack('Q',data[:header_len])[0]
         data = data[header_len:]
+        vvvv("data received so far (expecting %d): %d" % (data_len,len(data)))
         while len(data) < data_len:
             d = self.request.recv(1024)
             if not d:
+                vvv("received nothing, bailing out")
                 return None
             data += d
+        vvvv("received all of the data, returning")
         return data
 
     def handle(self):
         while True:
-            #log("waiting for data")
+            vvvv("waiting for data")
             data = self.recv_data()
             if not data:
+                vvvv("received nothing back from recv_data(), breaking out")
                 break
             try:
-                #log("got data, decrypting")
+                vvvv("got data, decrypting")
                 data = self.server.key.Decrypt(data)
-                #log("decryption done")
+                vvvv("decryption done")
             except:
-                log("bad decrypt, skipping...")
+                vv("bad decrypt, skipping...")
                 data2 = json.dumps(dict(rc=1))
                 data2 = self.server.key.Encrypt(data2)
                 send_data(client, data2)
                 return
 
-            #log("loading json from the data")
+            vvvv("loading json from the data")
             data = json.loads(data)
 
             mode = data['mode']
             response = {}
             if mode == 'command':
+                vvvv("received a command request, running it")
                 response = self.command(data)
             elif mode == 'put':
+                vvvv("received a put request, putting it")
                 response = self.put(data)
             elif mode == 'fetch':
+                vvvv("received a fetch request, getting it")
                 response = self.fetch(data)
 
             data2 = json.dumps(response)
             data2 = self.server.key.Encrypt(data2)
+            vvvv("sending the response back to the controller")
             self.send_data(data2)
+            vvvv("done sending the response")
 
     def command(self, data):
         if 'cmd' not in data:
@@ -217,14 +243,14 @@ class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
         if 'executable' not in data:
             return dict(failed=True, msg='internal error: executable is required')
 
-        #log("executing: %s" % data['cmd'])
+        vvvv("executing: %s" % data['cmd'])
         rc, stdout, stderr = self.server.module.run_command(data['cmd'], executable=data['executable'], close_fds=True)
         if stdout is None:
             stdout = ''
         if stderr is None:
             stderr = ''
-        #log("got stdout: %s" % stdout)
-        #log("got stderr: %s" % stderr)
+        vvvv("got stdout: %s" % stdout)
+        vvvv("got stderr: %s" % stderr)
 
         return dict(rc=rc, stdout=stdout, stderr=stderr)
 
@@ -235,7 +261,7 @@ class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
         try:
             fd = file(data['in_path'], 'rb')
             fstat = os.stat(data['in_path'])
-            log("FETCH file is %d bytes" % fstat.st_size)
+            vvv("FETCH file is %d bytes" % fstat.st_size)
             while fd.tell() < fstat.st_size:
                 data = fd.read(CHUNK_SIZE)
                 last = False
@@ -276,7 +302,7 @@ class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
         final_path = None
         final_user = None
         if 'user' in data and data.get('user') != getpass.getuser():
-            log("the target user doesn't match this user, we'll move the file into place via sudo")
+            vv("the target user doesn't match this user, we'll move the file into place via sudo")
             (fd,out_path) = tempfile.mkstemp(prefix='ansible.', dir=os.path.expanduser('~/.ansible/tmp/'))
             out_fd = os.fdopen(fd, 'w', 0)
             final_path = data['out_path']
@@ -306,11 +332,11 @@ class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
             log("failed to put the file: %s" % tb)
             return dict(failed=True, stdout="Could not write the file")
         finally:
-            #log("wrote %d bytes" % bytes)
+            vvvv("wrote %d bytes" % bytes)
             out_fd.close()
 
         if final_path:
-            log("moving %s to %s" % (out_path, final_path))
+            vvv("moving %s to %s" % (out_path, final_path))
             args = ['sudo','cp',out_path,final_path]
             rc, stdout, stderr = self.server.module.run_command(args, close_fds=True)
             if rc != 0:
@@ -334,7 +360,7 @@ def daemonize(module, password, port, minutes):
         server = ThreadedTCPServer(("0.0.0.0", port), ThreadedTCPRequestHandler, module, password)
         server.allow_reuse_address = True
         
-        log("serving!")
+        vv("serving!")
         server.serve_forever(poll_interval=1.0)
     except Exception, e:
         tb = traceback.format_exc()
@@ -342,11 +368,13 @@ def daemonize(module, password, port, minutes):
         sys.exit(0)
 
 def main():
+    global DEBUG_LEVEL
     module = AnsibleModule(
         argument_spec = dict(
             port=dict(required=False, default=5099),
             password=dict(required=True),
             minutes=dict(required=False, default=30),
+            debug=dict(required=False, default=0, type='int')
         ),
         supports_check_mode=True
     )
@@ -354,10 +382,13 @@ def main():
     password  = base64.b64decode(module.params['password'])
     port      = int(module.params['port'])
     minutes   = int(module.params['minutes'])
+    debug     = int(module.params['debug'])
 
     if not HAS_KEYCZAR:
         module.fail_json(msg="keyczar is not installed")
 
+    DEBUG_LEVEL=debug
+
     daemonize(module, password, port, minutes)