CODEWITHSUNDEEP
python
jrd
jrd

Reputation: 119

Executing a java program using CommandRunner

I am trying to execute a java program with a command line argument from inside a python script. I am using CommandRunner within python and invoking its execute() method as follows:

result = remote_command_runner_util.CommandRunner(command, host, user).execute()

I am unable to execute the above command call, when passing in input parameter such as java com.test.helloWorld for the command and with some valid user and host variables.

Is it possible to invoke java program from Python using CommandRunner? (that is the only option available for me).

Upvotes: 0

Views: 189

Answers (1)

Charles Duffy
Charles Duffy

Reputation: 295815

The only important trick (from a security perspective) is to safely escape your argument vector -- something that's avoided if using subprocess (since it allows shell=False), but unavoidable with CommandRunner.

import pipes, shlex
if hasattr(pipes, 'quote'):
    quote = pipes.quote       # Python 2
else:
    quote = shlex.quote       # Python 3

def executeCommand(argv, host, user):
    cmd_str = (' '.join(quote(arg) for arg in argv))
    return remote_command_runner_util.CommandRunner(cmd_str, host, user).execute()

...thereafter used as:

executeCommand(['java', '-jar', '/path/to/remote.jar', 'com.test.helloWorld'], host, user)

Upvotes: 1

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