def read_appscalefile(self):
""" Checks the local directory for an AppScalefile and reads its
contents.
Raises:
AppScalefileException: If there is no AppScalefile in the
local directory.
Returns:
The contents of the AppScalefile in the current working directory.
"""
try:
with open(self.get_appscalefile_location()) as file_handle:
return file_handle.read()
except IOError:
raise AppScalefileException("No AppScalefile found in this " +
"directory. Please run 'appscale init' to generate one and try " +
"again.")
def init(self, environment=None):
""" Writes an AppScalefile in the local directory, that contains common
configuration parameters.
Args:
environment: A str that indicates whether the AppScalefile to write should
be tailored to a 'cloud' environment or a 'cluster' environment or both.
Raises:
AppScalefileException: If there already is an AppScalefile in the local
directory.
"""
# first, make sure there isn't already an AppScalefile in this
# directory
appscalefile_location = self.get_appscalefile_location()
if os.path.exists(appscalefile_location):
raise AppScalefileException("There is already an AppScalefile" +
" in this directory. Please remove it and run 'appscale init'" +
" again to generate a new AppScalefile.")
# finally, copy the template AppScalefile there
shutil.copy(self.TEMPLATE_APPSCALEFILE, appscalefile_location)
def up(self):
""" Starts an AppScale deployment with the configuration options from the
AppScalefile in the current directory.
Raises:
AppScalefileException: If there is no AppScalefile in the current
directory.
"""
contents = self.read_appscalefile()
# If running in a cluster environment, we first need to set up SSH keys
contents_as_yaml = yaml.safe_load(contents)
if not LocalState.ensure_appscalefile_is_up_to_date():
contents = self.read_appscalefile()
contents_as_yaml = yaml.safe_load(contents)
# Construct a run-instances command from the file's contents
command = []
for key, value in contents_as_yaml.items():
if key in self.DEPRECATED_ASF_ARGS:
raise AppScalefileException(
"'{0}' has been deprecated. Refer to {1} to see the full changes."
.format(key, NodeLayout.APPSCALEFILE_INSTRUCTIONS))
if value is True:
command.append(str("--%s" % key))
elif value is False:
pass
else:
if key == "ips_layout":
command.append("--ips_layout")
command.append(base64.b64encode(yaml.dump(value)))
elif key == "disks":
command.append("--disks")
command.append(base64.b64encode(yaml.dump(value)))
elif key == "user_commands":
command.append("--user_commands")
command.append(base64.b64encode(yaml.dump(value)))
else:
command.append(str("--%s" % key))
command.append(str("%s" % value))
run_instances_opts = ParseArgs(command, "appscale-run-instances").args
if 'infrastructure' not in contents_as_yaml:
# Generate a new keypair if necessary.
if not self.valid_ssh_key(contents_as_yaml, run_instances_opts):
add_keypair_command = []
if 'keyname' in contents_as_yaml:
add_keypair_command.append('--keyname')
add_keypair_command.append(str(
contents_as_yaml['keyname']))
add_keypair_command.append('--ips_layout')
add_keypair_command.append(
base64.b64encode(yaml.dump(
contents_as_yaml['ips_layout'])))
add_keypair_opts = ParseArgs(add_keypair_command,
'appscale-add-keypair').args
AppScaleTools.add_keypair(add_keypair_opts)
AppScaleTools.run_instances(run_instances_opts)