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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 739 | olof | 1 | ########################################################### |
| 2 | # |
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| 3 | # Node interface through raw TCP socket (telnet) |
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| 4 | # |
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| 5 | ########################################################### |
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| 742 | olof | 6 | import logging as log |
| 7 | from NodeIfBase import NodeIfBase |
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| 8 | from threading import Thread |
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| 739 | olof | 9 | |
| 742 | olof | 10 | class TelnetThread(Thread): |
| 11 | ownerNotifier = None |
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| 12 | terminated = False |
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| 13 | socket = None |
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| 14 | pktHandler = None |
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| 15 | |||
| 16 | def __init__ (self, pktHandler, ownerNotifier, socket): |
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| 17 | Thread.__init__(self) |
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| 18 | self.pktHandler = pktHandler |
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| 19 | self.ownerNotifier = ownerNotifier |
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| 20 | |||
| 21 | def cleanup(self): |
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| 22 | # self.port.close() |
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| 23 | self.ownerNotifier.notify(self.ownerNotifier.TERMINATE) |
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| 24 | |||
| 25 | def run(self): |
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| 26 | try: |
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| 27 | log.debug('TelnetThread.run') |
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| 28 | readBuffer = [] |
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| 29 | |||
| 30 | while not self.terminated: |
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| 31 | # inByte = self.port.read() |
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| 32 | # blocking read call?? |
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| 33 | if inByte == '\n': |
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| 34 | msg = ''.join(readBuffer) |
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| 35 | readBuffer = [] |
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| 36 | #print 'Incoming:', msg |
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| 37 | self.pktHandler.input(msg) |
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| 38 | else: |
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| 39 | readBuffer.append(inByte) |
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| 40 | |||
| 41 | time.sleep(0.001) |
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| 42 | self.cleanup() |
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| 43 | except: # sys.excepthook does not work in threads |
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| 44 | import traceback |
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| 45 | traceback.print_exc() |
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| 46 | self.terminated = True |
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| 47 | self.cleanup() |
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| 48 | |||
| 49 | def terminate(self): |
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| 50 | log.debug('TelnetThread.terminate') |
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| 51 | self.terminated = True |
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| 52 | |||
| 739 | olof | 53 | class NodeIfTelnet: |
| 54 | config = [] |
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| 55 | pktHandler = None |
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| 742 | olof | 56 | telThread = None |
| 739 | olof | 57 | |
| 58 | def __init__(self, cfg, pktHandler): |
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| 59 | self.config = cfg |
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| 60 | self.pktHandler = pktHandler |
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| 61 | |||
| 62 | def setPktHandler(self, pktHandler): |
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| 63 | self.pktHandler = pktHandler |
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| 64 | |||
| 65 | def start(self): |
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| 742 | olof | 66 | self.telThread = TelnetThread(self.pktHandler, self.ifNotifier, socket) |
| 67 | self.telThread.start() |
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| 68 | return True |
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| 739 | olof | 69 | |
| 70 | def stop(self): |
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| 742 | olof | 71 | if self.running(): |
| 72 | self.telThread.terminate() |
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| 73 | else: |
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| 74 | log.debug('Telnet interface not started, or already stopped') |
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| 739 | olof | 75 | |
| 76 | def running(self): |
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| 742 | olof | 77 | if self.telThread is not None: |
| 78 | return not self.telThread.terminated |
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| 79 | else: |
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| 80 | return False |