remove pdb support, remove unused imports

+ remove tcp_lineserver

webserver.py

@@ -2,23 +2,15 @@ from gevent import monkey
 monkey.patch_all()
 import sys
 import time
-import os
 import signal
 import socket
 import traceback
 import logging
 import json
-from collections import deque
-from datetime import date, datetime
-import tcp_lineserver
 import gevent
 import gevent.pywsgi
 import gevent.queue
-from gevent.lock import RLock
 import flask
-import pprint
-import random
-import uuid
 import circularlog
 
 
@@ -91,7 +83,7 @@ def get_update(path=None):
                         lastmsg = time.time()
                     else:
                         gevent.sleep(pollinterval)
-        except (GeneratorExit, tcp_lineserver.Disconnected) as e:
+        except GeneratorExit as e:
             logging.info("except clause %r", repr(e))
             logging.info('CLOSED %s', client.id)
             print('CLOSE client')
@@ -132,6 +124,7 @@ def export():
     logging.info('GET %s %s', path, repr(kwargs))
     try:
         id = kwargs.pop('id')
+        print('export')
         client = instrument.clients[id]
         bytes = client.w_export(**kwargs)
         return flask.send_file(
@@ -234,15 +227,10 @@ def hostport_split(hostport):
     return (h[0], int(h[1]))
 
 
-def handle_pdb(sig, frame):
-    import pdb
-    print('PDB')
-    pdb.Pdb().set_trace(frame)
-
-
-def handle_term(sig, _):
-    server.stop()
-    server.close()
+# def handle_pdb(sig, frame):
+#     import pdb
+#     print('PDB')
+#     pdb.Pdb().set_trace(frame)
 
 
 def main(cls, **config):
@@ -255,7 +243,12 @@ def main(cls, **config):
     inst_name = config['instrument']
     instrument = cls(inst_name, config)
 
-    signal.signal(signal.SIGUSR1, handle_pdb)
+    # signal.signal(signal.SIGUSR1, handle_pdb)
+
+    def handle_term(sig, _):
+        server.stop()
+        server.close()
+
     signal.signal(signal.SIGTERM, handle_term)
 
     app.debug = True