mirror of https://github.com/docker/docs.git
121 lines
3.6 KiB
Python
121 lines
3.6 KiB
Python
"""
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Types for objects parsed from the configuration.
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"""
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from __future__ import absolute_import
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from __future__ import unicode_literals
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import os
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from collections import namedtuple
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from compose.config.errors import ConfigurationError
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from compose.const import IS_WINDOWS_PLATFORM
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class VolumeFromSpec(namedtuple('_VolumeFromSpec', 'source mode')):
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@classmethod
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def parse(cls, volume_from_config):
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parts = volume_from_config.split(':')
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if len(parts) > 2:
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raise ConfigurationError(
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"volume_from {} has incorrect format, should be "
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"service[:mode]".format(volume_from_config))
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if len(parts) == 1:
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source = parts[0]
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mode = 'rw'
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else:
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source, mode = parts
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return cls(source, mode)
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def parse_restart_spec(restart_config):
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if not restart_config:
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return None
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parts = restart_config.split(':')
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if len(parts) > 2:
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raise ConfigurationError(
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"Restart %s has incorrect format, should be "
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"mode[:max_retry]" % restart_config)
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if len(parts) == 2:
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name, max_retry_count = parts
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else:
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name, = parts
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max_retry_count = 0
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return {'Name': name, 'MaximumRetryCount': int(max_retry_count)}
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def parse_extra_hosts(extra_hosts_config):
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if not extra_hosts_config:
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return {}
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if isinstance(extra_hosts_config, dict):
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return dict(extra_hosts_config)
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if isinstance(extra_hosts_config, list):
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extra_hosts_dict = {}
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for extra_hosts_line in extra_hosts_config:
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# TODO: validate string contains ':' ?
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host, ip = extra_hosts_line.split(':')
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extra_hosts_dict[host.strip()] = ip.strip()
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return extra_hosts_dict
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def normalize_paths_for_engine(external_path, internal_path):
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"""Windows paths, c:\my\path\shiny, need to be changed to be compatible with
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the Engine. Volume paths are expected to be linux style /c/my/path/shiny/
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"""
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if not IS_WINDOWS_PLATFORM:
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return external_path, internal_path
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if external_path:
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drive, tail = os.path.splitdrive(external_path)
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if drive:
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external_path = '/' + drive.lower().rstrip(':') + tail
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external_path = external_path.replace('\\', '/')
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return external_path, internal_path.replace('\\', '/')
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class VolumeSpec(namedtuple('_VolumeSpec', 'external internal mode')):
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@classmethod
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def parse(cls, volume_config):
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"""Parse a volume_config path and split it into external:internal[:mode]
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parts to be returned as a valid VolumeSpec.
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"""
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if IS_WINDOWS_PLATFORM:
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# relative paths in windows expand to include the drive, eg C:\
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# so we join the first 2 parts back together to count as one
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drive, tail = os.path.splitdrive(volume_config)
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parts = tail.split(":")
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if drive:
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parts[0] = drive + parts[0]
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else:
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parts = volume_config.split(':')
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if len(parts) > 3:
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raise ConfigurationError(
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"Volume %s has incorrect format, should be "
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"external:internal[:mode]" % volume_config)
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if len(parts) == 1:
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external, internal = normalize_paths_for_engine(
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None,
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os.path.normpath(parts[0]))
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else:
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external, internal = normalize_paths_for_engine(
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os.path.normpath(parts[0]),
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os.path.normpath(parts[1]))
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mode = 'rw'
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if len(parts) == 3:
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mode = parts[2]
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return cls(external, internal, mode)
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