def generate_stack_from_input(pname, instance_id=None):
"""creates a new CloudFormation file for the given project."""
if not instance_id:
default_instance_id = core_utils.ymd()
instance_id = utils.uin("instance id", default_instance_id)
stackname = core.mk_stackname(pname, instance_id)
more_context = {'stackname': stackname}
# prompt user for alternate configurations
pdata = project.project_data(pname)
if 'aws-alt' in pdata:
def helpfn(altkey):
try:
return pdata['aws-alt'][altkey]['description']
except KeyError:
return None
default = 'skip this step'
alt_config = [default] + pdata['aws-alt'].keys()
alt_config = utils._pick('alternative config',
alt_config,
helpfn=helpfn)
if alt_config != default:
more_context['alt-config'] = alt_config
cfngen.generate_stack(pname, **more_context)
return stackname
def switch_revision(stackname, revision=None):
bvars = _retrieve_build_vars(stackname)
if revision is None:
revision = utils.uin('revision', None)
_ensure_revision_is_valid(revision)
if 'revision' in bvars and revision == bvars['revision']:
print 'FYI, the instance is already on that revision!'
return
new_data = bvars
new_data['revision'] = revision
_update_remote_bvars(stackname, new_data)
def switch_revision(stackname, revision=None, concurrency=None):
if revision is None:
revision = utils.uin('revision', None)
def _switch_revision_single_ec2_node():
buildvars = _retrieve_build_vars()
if 'revision' in buildvars and revision == buildvars['revision']:
print('FYI, the instance is already on that revision!')
return
new_data = buildvars
new_data['revision'] = revision
_update_remote_bvars(stackname, new_data)
stack_all_ec2_nodes(stackname, _switch_revision_single_ec2_node, username=BOOTSTRAP_USER, concurrency=concurrency)
def switch_revision(stackname, revision=None, concurrency=None):
if revision is None:
revision = utils.uin('revision', None)
def _switch_revision_single_ec2_node():
buildvars = _retrieve_build_vars()
if 'revision' in buildvars and revision == buildvars['revision']:
print('FYI, the instance is already on that revision!')
return
new_data = buildvars
new_data['revision'] = revision
_update_remote_bvars(stackname, new_data)
stack_all_ec2_nodes(stackname, _switch_revision_single_ec2_node, username=BOOTSTRAP_USER, concurrency=concurrency)
def generate_stack_from_input(pname, instance_id=None, alt_config=None):
"""creates a new CloudFormation file for the given project."""
instance_id = instance_id or utils.uin("instance id", core_utils.ymd())
stackname = core.mk_stackname(pname, instance_id)
checks.ensure_stack_does_not_exist(stackname)
more_context = {'stackname': stackname}
pdata = project.project_data(pname)
if alt_config:
ensure(
'aws-alt' in pdata,
"alternative configuration name given, but project has no alternate configurations"
)
# prompt user for alternate configurations
if pdata['aws-alt']:
default = 'skip'
def helpfn(altkey):
if altkey == default:
return 'uses the default configuration'
try:
return pdata['aws-alt'][altkey]['description']
except KeyError:
return None
if instance_id in pdata['aws-alt'].keys():
LOG.info(
"instance-id found in known alternative configurations. using configuration %r",
instance_id)
more_context['alt-config'] = instance_id
else:
alt_config_choices = [default] + list(pdata['aws-alt'].keys())
if not alt_config:
alt_config = utils._pick('alternative config',
alt_config_choices,
helpfn=helpfn)
if alt_config != default:
more_context['alt-config'] = alt_config
# TODO: return the templates used here, so that they can be passed down to
# bootstrap.create_stack() without relying on them implicitly existing
# on the filesystem
cfngen.generate_stack(pname, **more_context)
return stackname
def create_stack(pname):
"""creates a new CloudFormation template for the given project."""
default_instance_id = core_utils.ymd()
inst_id = utils.uin("instance id", default_instance_id)
stackname = core.mk_stackname(pname, inst_id)
more_context = {'instance_id': stackname}
# prompt user for alternate configurations
pdata = project.project_data(pname)
if pdata.has_key('aws-alt'):
def helpfn(altkey):
try:
return pdata['aws-alt'][altkey]['description']
except KeyError:
return None
default = 'skip this step'
alt_config = [default] + pdata['aws-alt'].keys()
alt_config = utils._pick('alternative config', alt_config, helpfn=helpfn)
if alt_config != default:
more_context['alt-config'] = alt_config
cfngen.generate_stack(pname, **more_context)
return stackname
def generate_stack_from_input(pname, instance_id=None, alt_config=None):
"""creates a new CloudFormation file for the given project."""
instance_id = instance_id or utils.uin("instance id", core_utils.ymd())
stackname = core.mk_stackname(pname, instance_id)
checks.ensure_stack_does_not_exist(stackname)
more_context = {'stackname': stackname}
pdata = project.project_data(pname)
if alt_config:
ensure('aws-alt' in pdata, "alternative configuration name given, but project has no alternate configurations")
# prompt user for alternate configurations
if pdata['aws-alt']:
default = 'skip'
def helpfn(altkey):
if altkey == default:
return 'uses the default configuration'
try:
return pdata['aws-alt'][altkey]['description']
except KeyError:
return None
if instance_id in pdata['aws-alt'].keys():
LOG.info("instance-id found in known alternative configurations. using configuration %r", instance_id)
more_context['alt-config'] = instance_id
else:
alt_config_choices = [default] + list(pdata['aws-alt'].keys())
if not alt_config:
alt_config = utils._pick('alternative config', alt_config_choices, helpfn=helpfn)
if alt_config != default:
more_context['alt-config'] = alt_config
# TODO: return the templates used here, so that they can be passed down to
# bootstrap.create_stack() without relying on them implicitly existing
# on the filesystem
cfngen.generate_stack(pname, **more_context)
return stackname
def new():
"creates a new project formula"
pname = utils.uin('project name')
#assert pname not in project.project_list(), "that project name already exists"
local('./scripts/new-project.sh %s' % pname)
def test_uin_default(self, get_input):
value = utils.uin('project', default='lax')
self.assertEqual('lax', value)
def new():
"creates a new project formula"
pname = utils.uin('project name')
local('./scripts/new-project.sh %s' % pname)
def check_user_input(pname, instance_id=None, alt_config=None):
"marshals user input and checks it for correctness"
instance_id = instance_id or utils.uin("instance id", core_utils.ymd())
stackname = core.mk_stackname(pname, instance_id)
pdata = project.project_data(pname)
# alt-config given, die if it doesn't exist
if alt_config:
ensure(
'aws-alt' in pdata,
"alt-config %r given, but project has no alternate configurations"
% alt_config)
# if the requested instance-id matches a known alt-config, we'll use that alt-config. warn user.
if instance_id in pdata['aws-alt'].keys():
LOG.warn("instance-id %r found in alt-config list, using that.",
instance_id)
alt_config = instance_id
# no alt-config given but alt-config options exist, prompt user
if not alt_config and pdata['aws-alt']:
default_choice = 'skip'
def helpfn(altkey):
if altkey == default_choice:
return 'uses the default configuration'
try:
return pdata['aws-alt'][altkey]['description']
except KeyError:
return None
alt_config_choice_list = [default_choice] + list(
pdata['aws-alt'].keys())
alt_config_choice = utils._pick('alternative config',
alt_config_choice_list,
helpfn=helpfn)
if alt_config_choice != default_choice:
alt_config = alt_config_choice
# check the alt-config isn't unique and if it *is* unique, that an instance using it doesn't exist yet.
# note: it is *technically* possible that an instance is using a unique configuration but
# that its instance-id *is not* the name of the alt-config passed in.
# For example, if `journal--prod` didn't exist, I could create `journal--foo` using the `prod` config.
if alt_config and alt_config in pdata['aws-alt'] and pdata['aws-alt'][
alt_config]['unique']:
dealbreaker = core.mk_stackname(pname, alt_config)
# "project 'journal' config 'prod' is marked as unique!"
# "checking for any instance named 'journal--prod' ..."
print("project %r config %r is marked as unique!" %
(pname, alt_config))
print("checking for any instance named %r ..." % (dealbreaker, ))
try:
checks.ensure_stack_does_not_exist(dealbreaker)
except checks.StackAlreadyExistsProblem:
# "stack 'journal--prod' exists, cannot re-use unique configuration 'prod'"
msg = "stack %r exists, cannot re-use unique configuration %r." % (
dealbreaker, alt_config)
raise TaskExit(msg)
# check that the instance we want to create doesn't exist
try:
print("checking %r doesn't exist." % stackname)
checks.ensure_stack_does_not_exist(stackname)
except checks.StackAlreadyExistsProblem as e:
msg = 'stack %r already exists.' % e.stackname
raise TaskExit(msg)
more_context = {'stackname': stackname}
if alt_config:
more_context['alt-config'] = alt_config
return more_context
def test_uin_default(self, get_input):
value = utils.uin('project', default='lax')
self.assertEqual('lax', value)
def new():
"creates a new project formula from a template"
pname = utils.uin('project name')
local('./scripts/new-project.sh %s' % pname)
