Implement resize from CLI client

The CLI resize is wired up for ssh usage.  At the time of this commit,
initial size is not handled.

confluent_client/bin/confetty

@@ -582,6 +582,8 @@ def do_resize(a, b):
         return
     height, width = struct.unpack(
         'hh', fcntl.ioctl(sys.stdout, termios.TIOCGWINSZ, b'....'))[:2]
+    tlvdata.send(session.connection, {'operation': 'resize', 'width': width,
+                                      'height': height})
 
 
 def startconsole(nodename):

confluent_server/confluent/consoleserver.py

@@ -372,6 +372,7 @@ class ConsoleHandler(object):
                               'error': self.error})
             return
         self.send_break = self._console.send_break
+        self.resize = self._console.resize
         if self._attribwatcher:
             self.cfgmgr.remove_watcher(self._attribwatcher)
             self._attribwatcher = None
@@ -739,6 +740,10 @@ class ProxyConsole(object):
     def reopen(self):
         tlvdata.send(self.remote, {'operation': 'reopen'})
 
+    def resize(self, width, height):
+        tlvdata.send(self.remote, {'operation': 'resize', 'width': width,
+                                   'height': height})
+
 
 # this represents some api view of a console handler.  This handles things like
 # holding the caller specific queue data, for example, when http api should be
@@ -807,6 +812,9 @@ class ConsoleSession(object):
         """
         self.conshdl.send_break()
 
+    def resize(self, width, height):
+        self.conshdl.resize(width, height)
+
     def get_buffer_age(self):
         """Get the age in seconds of the buffered data
 

confluent_server/confluent/interface/console.py

@@ -41,6 +41,11 @@ class Console(object):
         the remote console"""
         return
 
+    def resize(self, width, height):
+        """This function is responsible for relaying resize request from
+        client terminal to remote console"""
+        return
+
     def ping(self):
         """This function is a hint to the console plugin that now would be a
         nice time to assess health of console connection.  Plugins that see

confluent_server/confluent/plugins/shell/ssh.py

@@ -82,6 +82,9 @@ class SshShell(conapi.Console):
         self.password = password
         self.inputmode = 0  # 0 = username, 1 = password...
 
+    def resize(self, width, height):
+        self.shell.resize_pty(width=width, height=height)
+
     def recvdata(self):
         while self.connected:
             pendingdata = self.shell.recv(8192)

confluent_server/confluent/sockapi.py

@@ -291,6 +291,9 @@ def term_interact(authdata, authname, ccons, cfm, connection, consession,
             elif data['operation'] == 'reopen':
                 consession.reopen()
                 continue
+            elif data['operation'] == 'resize':
+                consession.resize(width=data['width'], height=data['height'])
+                continue
             else:
                 try:
                     process_request(connection, data, cfm, authdata, authname,