49 lines
1.7 KiB
Python
49 lines
1.7 KiB
Python
from subprocess import getoutput
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import pprint
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class NoContainersError(Exception):
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pass
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class DockerParser:
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def containers_info(raw_info=getoutput('docker container list')):
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"""
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Gets info about all the Docker containers
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:return: Nested dict of containers info
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"""
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if '\n' not in raw_info:
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raise(NoContainersError('A Docker container is required to run this program. Please create a docker container and try again.'))
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raw_info = getoutput('docker ps')
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# Header: "CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES" (with way more spaces)
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header = raw_info[:raw_info.find('\n')+1]
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header_temp = header
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header_indices = {}
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while ' ' in header_temp: # Split header
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temp = header_temp[header_temp.rfind(' ')+2:].strip()
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header_indices[temp] = header.find(temp)
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header_temp = header_temp[:header_temp.rfind(' ')].strip()
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header_indices[header[:header.find(' ')]] = 0
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raw_info = raw_info[raw_info.find('\n')+1:] # Remove header (example above)
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info = {}
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# Find container names
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containers = []
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for line in raw_info.split('\n'):
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containers.append(line.strip()[line.strip().rfind(' ')+1:])
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# Fill in info
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for i in range(len(containers)):
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info[containers[i]] = {}
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for column in header_indices:
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end_i = header_indices[column] + len(column)
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info[containers[i]][column] = raw_info[i][header_indices[column]:end_i]
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return info
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if __name__ == '__main__':
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try:
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pprint.pprint(DockerParser.containers_info())
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except NoContainersError as e:
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print(e)
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