def start(self, *, instance_name: str) -> None:
"""Passthrough for running multipass start.
:param str instance_name: the name of the instance to start.
"""
cmd = [self.provider_cmd, "start", instance_name]
try:
_run(cmd)
except subprocess.CalledProcessError as process_error:
raise errors.ProviderStartError(
provider_name=self.provider_name,
exit_code=process_error.returncode) from process_error
def _wait_for_multipass_ready(cls, *, echoer):
echoer.wrapped("Waiting for multipass...")
retry_count = 20
while retry_count:
try:
output = subprocess.check_output([cls.provider_cmd, "version"]).decode()
except subprocess.CalledProcessError:
output = ""
except FileNotFoundError:
raise errors.ProviderStartError(provider_name=cls.provider_name,
error_message="multipass not found - please check that it"
" can be found in the configured PATH")
# if multipassd is in the version information, it means the service is up
# and we can carry on
if "multipassd" in output:
break
retry_count -= 1
sleep(1)
def setup_multipass(cls, *, echoer, platform: str) -> None:
if platform == "linux":
install_snaps(["multipass/latest/stable"])
elif platform == "darwin":
try:
subprocess.check_call(["brew", "cask", "install", "multipass"])
except subprocess.CalledProcessError:
raise errors.ProviderStartError(provider_name=cls.provider_name,
error_message="Failed to install multipass using homebrew.\n"
"Verify your homebrew installation and try again.\n"
"Alternatively, manually install multipass by running"
" 'brew cask install multipass'.")
elif platform == "win32":
windows_install_multipass(echoer)
else:
raise EnvironmentError(
"Setting up multipass for {!r} is not supported.".format(platform)
)
# wait for multipassd to be available
cls._wait_for_multipass_ready(echoer=echoer)