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Code Issues Releases Wiki Activity

Ensure Qemu monitor commands are executed. Ref #1582.

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This commit is contained in:
grossmj 2019-05-18 19:31:41 +07:00
parent c41c01b95f
commit cf0cc8bb87
1 changed files with 15 additions and 2 deletions
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17
gns3server/compute/qemu/qemu_vm.py
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@ -1081,7 +1081,15 @@ class QemuVM(BaseNode):
return result return result
try: try:
writer.write(command.encode('ascii') + b"\n") cmd_byte = command.encode('ascii')
writer.write(cmd_byte + b"\n")
if not expected:
while True:
line = await asyncio.wait_for(reader.readline(), timeout=3) # echo of the command
if not line or cmd_byte in line:
break
except asyncio.TimeoutError:
log.warning("Missing echo of command '{}'".format(command))
except OSError as e: except OSError as e:
log.warning("Could not write to QEMU monitor: {}".format(e)) log.warning("Could not write to QEMU monitor: {}".format(e))
writer.close() writer.close()
@ -1089,13 +1097,15 @@ class QemuVM(BaseNode):
if expected: if expected:
try: try:
while result is None: while result is None:
line = await reader.readline() line = await asyncio.wait_for(reader.readline(), timeout=3)
if not line: if not line:
break break
for expect in expected: for expect in expected:
if expect in line: if expect in line:
result = line.decode("utf-8").strip() result = line.decode("utf-8").strip()
break break
except asyncio.TimeoutError:
log.warning("Timeout while waiting for result of command '{}'".format(command))
except (ConnectionError, EOFError) as e: except (ConnectionError, EOFError) as e:
log.warning("Could not read from QEMU monitor: {}".format(e)) log.warning("Could not read from QEMU monitor: {}".format(e))
writer.close() writer.close()
@ -1118,6 +1128,9 @@ class QemuVM(BaseNode):
log.info("Execute QEMU monitor command: {}".format(command)) log.info("Execute QEMU monitor command: {}".format(command))
try: try:
writer.write(command.encode('ascii') + b"\n") writer.write(command.encode('ascii') + b"\n")
await asyncio.wait_for(reader.readline(), timeout=3) # echo of the command
except asyncio.TimeoutError:
log.warning("Missing echo of command '{}'".format(command))
except OSError as e: except OSError as e:
log.warning("Could not write to QEMU monitor: {}".format(e)) log.warning("Could not write to QEMU monitor: {}".format(e))
writer.close() writer.close()