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#!/usr/bin/env python
import subprocess
from cloudify import ctx
from cloudify.exceptions import OperationRetry
def check_command(command):
try:
process = subprocess.Popen(
command.split()
)
except OSError:
return False
output, error = process.communicate()
ctx.logger.debug('command: {0} '.format(command))
ctx.logger.debug('output: {0} '.format(output))
ctx.logger.debug('error: {0} '.format(error))
ctx.logger.debug('process.returncode: {0} '.format(process.returncode))
if process.returncode:
ctx.logger.error('Running `{0}` returns error.'.format(command))
return False
return True
def execute_command(_command):
ctx.logger.debug('_command {0}.'.format(_command))
subprocess_args = {
'args': _command.split(),
'stdout': subprocess.PIPE,
'stderr': subprocess.PIPE
}
ctx.logger.debug('subprocess_args {0}.'.format(subprocess_args))
process = subprocess.Popen(**subprocess_args)
output, error = process.communicate()
ctx.logger.debug('command: {0} '.format(_command))
ctx.logger.debug('output: {0} '.format(output))
ctx.logger.debug('error: {0} '.format(error))
ctx.logger.debug('process.returncode: {0} '.format(process.returncode))
if process.returncode:
ctx.logger.error('Running `{0}` returns error.'.format(_command))
return False
return output
if __name__ == '__main__':
docker_command = 'docker ps'
if not check_command(docker_command):
raise OperationRetry('Waiting for docker to be installed.')
finished = False
ps = execute_command('ps -ef')
for line in ps.split('\n'):
if '/usr/bin/python /usr/bin/cloud-init modules' in line:
ctx.logger.error('in line')
raise OperationRetry('Waiting for Cloud Init to finish.')
ctx.logger.info('Docker is ready and Cloud Init finished.')
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