Release 0.5.0
This commit is contained in:
parent
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commit
badb7b02c8
@ -1,5 +1,13 @@
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# Changelog
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## 0.5.0
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- new custom Jinja function `sub`, works the same as re.sub
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- added possibility to use custom Jinja function `inline_yaml` to set data as yaml
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- disabled SilentUndefined
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- added Jinja2 extension `do` and `loopcontrols`
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- new custom Jinja function `option` to access options at render time incl. default support for nested objects
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- removed custom Jinja functions around old remote Ref handling
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## 0.4.2
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- silence warnings by latest PyYaml 5.1
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2
Makefile
2
Makefile
@ -4,7 +4,7 @@ test:
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tox
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clean:
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rm -rf .tox .cache dist
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rm -rf .tox .cache .coverage .eggs cloudbender.egg-info .pytest_cache dist
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dist:
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python setup.py bdist_wheel --universal
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@ -2,7 +2,7 @@ import logging
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__author__ = 'Stefan Reimer'
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__email__ = 'stefan@zero-downtimet.net'
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__version__ = '0.4.2'
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__version__ = '0.5.0'
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# Set up logging to ``/dev/null`` like a library is supposed to.
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@ -20,9 +20,6 @@ class CloudBender(object):
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"parameter_path": os.path.join(self.root, "parameters"),
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"artifact_paths": [os.path.join(self.root, "artifacts")]
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}
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self.default_settings = {
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'vars': {'Mode': 'CloudBender'}
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}
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if not os.path.isdir(self.root):
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raise "Check '{0}' exists and is a valid project folder.".format(root_path)
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@ -55,7 +52,7 @@ class CloudBender(object):
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ensure_dir(self.ctx[k])
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self.sg = StackGroup(self.ctx['config_path'], self.ctx)
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self.sg.read_config(self.default_settings)
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self.sg.read_config()
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self.all_stacks = self.sg.get_stacks()
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@ -8,6 +8,8 @@ import yaml
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import jinja2
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from jinja2.utils import missing, object_type_repr
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from jinja2._compat import string_types
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from jinja2.filters import make_attrgetter
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from jinja2.runtime import Undefined
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import pyminifier.token_utils
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import pyminifier.minification
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@ -15,76 +17,31 @@ import pyminifier.compression
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import pyminifier.obfuscate
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import types
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import logging
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logger = logging.getLogger(__name__)
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@jinja2.contextfunction
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def cloudbender_ctx(context, cb_ctx={}, reset=False, command=None, args={}):
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def option(context, attribute, default_value=u'', source='options'):
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""" Get attribute from options data structure, default_value otherwise """
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environment = context.environment
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options = environment.globals['_config'][source]
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# Reset state
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if reset:
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cb_ctx.clear()
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return
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if not attribute:
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return default_value
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if 'dependencies' not in cb_ctx:
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cb_ctx['dependencies'] = set()
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if 'mandatory_parameters' not in cb_ctx:
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cb_ctx['mandatory_parameters'] = set()
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if command == 'get_dependencies':
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_deps = sorted(list(cb_ctx['dependencies']))
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if _deps:
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logger.debug("Stack depencies: {}".format(','.join(_deps)))
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return _deps
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elif command == 'add_dependency':
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try:
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cb_ctx['dependencies'].add(args['dep'])
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logger.debug("Adding stack depency to {}".format(args['dep']))
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except KeyError:
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pass
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getter = make_attrgetter(environment, attribute)
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value = getter(options)
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else:
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raise("Unknown command")
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if isinstance(value, Undefined):
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return default_value
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return value
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@jinja2.contextfunction
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def get_custom_att(context, att=None, ResourceName="FortyTwo", attributes={}, reset=False, dump=False):
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""" Returns the rendered required fragement and also collects all foreign
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attributes for the specified CustomResource to include them later in
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the actual CustomResource include property """
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# Reset state
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if reset:
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attributes.clear()
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return
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# return all registered attributes
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if dump:
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return attributes
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# If called with an attribute, return fragement and register dependency
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if att:
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config = context.get_all()['_config']
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if ResourceName not in attributes:
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attributes[ResourceName] = set()
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attributes[ResourceName].add(att)
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if ResourceName == 'FortyTwo':
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cloudbender_ctx(context, command='add_dependency', args={'dep': att.split('.')[0]})
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if config['cfn']['Mode'] == "FortyTwo":
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return('{{ "Fn::GetAtt": ["{0}", "{1}"] }}'.format(ResourceName, att))
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elif config['cfn']['Mode'] == "AWSImport" and ResourceName == "FortyTwo":
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# AWS only allows - and :, so replace '.' with ":"
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return('{{ "Fn::ImportValue": {{ "Fn::Sub": "${{Conglomerate}}:{0}" }} }}'.format(att.replace('.', ':')))
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else:
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# We need to replace . with some PureAlphaNumeric thx AWS ...
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return('{{ Ref: {0} }}'.format(att.replace('.', 'DoT')))
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except (jinja2.exceptions.UndefinedError):
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return default_value
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@jinja2.contextfunction
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@ -107,21 +64,6 @@ def include_raw_gz(context, files=None, gz=True):
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return base64.b64encode(buf.getvalue()).decode('utf-8')
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@jinja2.contextfunction
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def render_once(context, name=None, resources=set(), reset=False):
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""" Utility function returning True only once per name """
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if reset:
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resources.clear()
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return
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if name and name not in resources:
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resources.add(name)
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return True
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return False
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@jinja2.contextfunction
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def raise_helper(context, msg):
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raise Exception(msg)
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@ -154,7 +96,7 @@ def search(value, pattern='', ignorecase=False):
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# Custom filters
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def regex_replace(value='', pattern='', replace='', ignorecase=False):
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def sub(value='', pattern='', replace='', ignorecase=False):
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if ignorecase:
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flags = re.I
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else:
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@ -183,11 +125,11 @@ def pyminify(source, obfuscate=False, minify=True):
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source = pyminifier.token_utils.untokenize(tokens)
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# logger.info(source)
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minified_source = pyminifier.compression.gz_pack(source)
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logger.info("Compressed python code to {}".format(len(minified_source)))
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logger.info("Compressed python code from {} to {}".format(len(source), len(minified_source)))
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return minified_source
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def parse_yaml(block):
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def inline_yaml(block):
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return yaml.safe_load(block)
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@ -219,8 +161,8 @@ class SilentUndefined(jinja2.Undefined):
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def JinjaEnv(template_locations=[]):
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jenv = jinja2.Environment(trim_blocks=True,
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lstrip_blocks=True,
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undefined=SilentUndefined,
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extensions=['jinja2.ext.loopcontrols', 'jinja2.ext.do'])
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# undefined=SilentUndefined,
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jinja_loaders = []
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for _dir in template_locations:
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@ -228,14 +170,12 @@ def JinjaEnv(template_locations=[]):
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jenv.loader = jinja2.ChoiceLoader(jinja_loaders)
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jenv.globals['include_raw'] = include_raw_gz
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jenv.globals['get_custom_att'] = get_custom_att
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jenv.globals['cloudbender_ctx'] = cloudbender_ctx
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jenv.globals['render_once'] = render_once
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jenv.globals['raise'] = raise_helper
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jenv.globals['option'] = option
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jenv.filters['regex_replace'] = regex_replace
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jenv.filters['sub'] = sub
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jenv.filters['pyminify'] = pyminify
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jenv.filters['yaml'] = parse_yaml
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jenv.filters['inline_yaml'] = inline_yaml
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jenv.tests['match'] = match
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jenv.tests['regex'] = regex
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@ -4,7 +4,6 @@ import hashlib
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import oyaml as yaml
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import json
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import time
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import subprocess
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from datetime import datetime, timedelta
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from dateutil.tz import tzutc
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@ -33,17 +32,19 @@ class StackStatus(object):
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class Stack(object):
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def __init__(self, name, path, rel_path, tags=None, parameters=None, template_vars=None, region='global', profile=None, template=None, ctx={}):
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def __init__(self, name, path, rel_path, tags=None, parameters=None, options=None, region='global', profile=None, template=None, ctx={}):
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self.id = (profile, region, name)
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self.stackname = name
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self.path = path
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self.rel_path = rel_path
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self.tags = tags
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self.parameters = parameters
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self.template_vars = template_vars
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self.options = options
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self.region = region
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self.profile = profile
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self.template = template
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self.md5 = None
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self.mode = 'CloudBender'
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self.provides = template
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self.cfn_template = None
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self.cfn_parameters = []
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@ -68,11 +69,20 @@ class Stack(object):
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if p in _config:
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setattr(self, p, dict_merge(getattr(self, p), _config[p]))
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# Inject Artifact for now hard coded
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# Inject Artifact if not explicitly set
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if 'Artifact' not in self.tags:
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self.tags['Artifact'] = self.provides
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# backwards comp
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if 'vars' in _config:
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self.template_vars = dict_merge(self.template_vars, _config['vars'])
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self.options = dict_merge(self.options, _config['vars'])
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if 'Mode' in self.options:
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self.mode = self.options['Mode']
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if 'options' in _config:
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self.options = dict_merge(self.options, _config['options'])
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if 'Mode' in self.options:
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self.mode = self.options['Mode']
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if 'dependencies' in _config:
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for dep in _config['dependencies']:
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@ -83,62 +93,73 @@ class Stack(object):
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def render(self):
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"""Renders the cfn jinja template for this stack"""
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jenv = JinjaEnv(self.ctx['artifact_paths'])
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template = jenv.get_template('{0}{1}'.format(self.template, '.yaml.jinja'))
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template_metadata = {
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'Template.Name': self.template,
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'Template.Hash': 'tbd',
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'Template.Hash': "__HASH__",
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'CloudBender.Version': __version__
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}
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cb = False
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if self.template_vars['Mode'] == "CloudBender":
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cb = True
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_config = {'cb': cb, 'cfn': self.template_vars, 'Metadata': template_metadata}
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# cfn is provided for old configs
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_config = {'mode': self.mode, 'options': self.options, 'metadata': template_metadata, 'cfn': self.options}
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jenv = JinjaEnv(self.ctx['artifact_paths'])
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jenv.globals['_config'] = _config
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# First render pass to calculate a md5 checksum
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template_metadata['Template.Hash'] = hashlib.md5(template.render(_config).encode('utf-8')).hexdigest()
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# Reset and set Metadata for final render pass
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jenv.globals['get_custom_att'](context={'_config': self.template_vars}, reset=True)
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jenv.globals['render_once'](context={'_config': self.template_vars}, reset=True)
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jenv.globals['cloudbender_ctx'](context={'_config': self.template_vars}, reset=True)
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# Try to add latest tag/commit for the template source, skip if not in git tree
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try:
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_comment = subprocess.check_output('git log -1 --pretty=%B {}'.format(template.filename).split(' ')).decode('utf-8').strip().replace('"', '').replace('#', '').replace('\n', '').replace(':', ' ')
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if _comment:
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template_metadata['Template.LastGitComment'] = _comment
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except subprocess.CalledProcessError:
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pass
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template = jenv.get_template('{0}{1}'.format(self.template, '.yaml.jinja'))
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logger.info('Rendering %s', template.filename)
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rendered = template.render(_config)
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try:
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self.data = yaml.safe_load(rendered)
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self.cfn_template = template.render(_config)
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self.cfn_data = yaml.safe_load(self.cfn_template)
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except Exception as e:
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# In case we rendered invalid yaml this helps to debug
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logger.error(rendered)
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if self.cfn_template:
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logger.error(self.cfn_template)
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raise e
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# Some sanity checks and final cosmetics
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# Check for empty top level Parameters, Outputs and Conditions and remove
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for key in ['Parameters', 'Outputs', 'Conditions']:
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if key in self.data and self.data[key] is None:
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if key in self.cfn_data and self.cfn_data[key] is None:
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# Delete from data structure which also takes care of json
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del self.data[key]
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# but also remove from rendered for the yaml file
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rendered = rendered.replace('\n' + key + ":", '')
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del self.cfn_data[key]
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# Condense multiple empty lines to one
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self.cfn_template = re.sub(r'\n\s*\n', '\n\n', rendered)
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# but also remove from rendered for the yaml file
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self.cfn_template = self.cfn_template.replace('\n' + key + ":", '')
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if not re.search('CloudBender::', self.cfn_template):
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logger.info("CloudBender not required -> removing Transform")
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del self.cfn_data['Transform']
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self.cfn_template = self.cfn_template.replace('Transform: [CloudBender]', '')
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# Remove and condense multiple empty lines
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self.cfn_template = re.sub(r'\n\s*\n', '\n\n', self.cfn_template)
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self.cfn_template = re.sub(r'^\s*', '', self.cfn_template)
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self.cfn_template = re.sub(r'\s*$', '', self.cfn_template)
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# set md5 last
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self.md5 = hashlib.md5(self.cfn_template.encode('utf-8')).hexdigest()
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self.cfn_data['Metadata']['Hash'] = self.md5
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# Add Legacy FortyTwo if needed to prevent AWS from replacing existing resources for NO reason ;-(
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include = []
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search_attributes(self.cfn_data, include)
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if len(include):
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_res = """
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FortyTwo:
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Type: Custom::FortyTwo
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Properties:
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ServiceToken:
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Fn::Sub: "arn:aws:lambda:${{AWS::Region}}:${{AWS::AccountId}}:function:FortyTwo"
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UpdateToken: {}
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Include: {}""".format(self.md5, sorted(set(include)))
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self.cfn_data['Resources'].update(yaml.load(_res))
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self.cfn_template = re.sub(r'Resources:', r'Resources:' + _res + '\n', self.cfn_template)
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logger.info("Legacy Mode -> added Custom::FortyTwo")
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self.cfn_template = self.cfn_template.replace('__HASH__', self.md5)
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# Update internal data structures
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self._parse_metadata()
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@ -146,7 +167,7 @@ class Stack(object):
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def _parse_metadata(self):
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# Extract dependencies if present
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try:
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for dep in self.data['Metadata']['CloudBender']['Dependencies']:
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for dep in self.cfn_data['Metadata']['CloudBender']['Dependencies']:
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self.dependencies.add(dep)
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except KeyError:
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pass
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@ -178,7 +199,7 @@ class Stack(object):
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self.cfn_template = yaml_contents.read()
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logger.debug('Read cfn template %s.', yaml_file)
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self.data = yaml.safe_load(self.cfn_template)
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self.cfn_data = yaml.safe_load(self.cfn_template)
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self._parse_metadata()
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else:
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@ -189,14 +210,18 @@ class Stack(object):
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self.read_template_file()
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try:
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ignore_checks = self.data['Metadata']['cfnlint_ignore']
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ignore_checks = self.cfn_data['Metadata']['cfnlint_ignore']
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except KeyError:
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ignore_checks = []
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# Ignore some more checks around injected parameters as we generate these
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if self.template_vars['Mode'] == "Piped":
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if self.mode == "Piped":
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ignore_checks = ignore_checks + ['W2505', 'W2509', 'W2507']
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# Ignore checks regarding overloaded properties
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if self.mode == "CloudBender":
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ignore_checks = ignore_checks + ['E3035', 'E3002', 'E3012', 'W2001', 'E3001']
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filename = os.path.join(self.ctx['template_path'], self.rel_path, self.stackname + ".yaml")
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logger.info('Validating {0}'.format(filename))
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@ -223,18 +248,18 @@ class Stack(object):
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# Inspect all outputs of the running Conglomerate members
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# if we run in Piped Mode
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# if self.template_vars['Mode'] == "Piped":
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# if self.mode == "Piped":
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# try:
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# stack_outputs = inspect_stacks(config['tags']['Conglomerate'])
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# logger.info(pprint.pformat(stack_outputs))
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# except KeyError:
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# pass
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if 'Parameters' in self.data:
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if 'Parameters' in self.cfn_data:
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self.cfn_parameters = []
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for p in self.data['Parameters']:
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for p in self.cfn_data['Parameters']:
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# In Piped mode we try to resolve all Paramters first via stack_outputs
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# if config['cfn']['Mode'] == "Piped":
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# if self.mode == "Piped":
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# try:
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# # first reverse the rename due to AWS alphanumeric restriction for parameter names
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# _p = p.replace('DoT','.')
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@ -252,7 +277,7 @@ class Stack(object):
|
||||
logger.info('{} {} Parameter {}={}'.format(self.region, self.stackname, p, value))
|
||||
except KeyError:
|
||||
# If we have a Default defined in the CFN skip, as AWS will use it
|
||||
if 'Default' in self.data['Parameters'][p]:
|
||||
if 'Default' in self.cfn_data['Parameters'][p]:
|
||||
continue
|
||||
else:
|
||||
logger.error('Cannot find value for parameter {0}'.format(p))
|
||||
@ -470,3 +495,23 @@ class Stack(object):
|
||||
# Ensure output dirs exist
|
||||
if not os.path.exists(os.path.join(self.ctx[path], self.rel_path)):
|
||||
os.makedirs(os.path.join(self.ctx[path], self.rel_path))
|
||||
|
||||
|
||||
def search_attributes(template, attributes):
|
||||
""" Traverses a template and searches for all Fn::GetAtt calls to FortyTwo
|
||||
adding them to the passed in attributes set
|
||||
"""
|
||||
if isinstance(template, dict):
|
||||
for k, v in template.items():
|
||||
# Look for Fn::GetAtt
|
||||
if k == "Fn::GetAtt" and isinstance(v, list):
|
||||
if v[0] == "FortyTwo":
|
||||
attributes.append(v[1])
|
||||
|
||||
if isinstance(v, dict) or isinstance(v, list):
|
||||
search_attributes(v, attributes)
|
||||
|
||||
elif isinstance(template, list):
|
||||
for k in template:
|
||||
if isinstance(k, dict) or isinstance(k, list):
|
||||
search_attributes(k, attributes)
|
||||
|
||||
@ -50,7 +50,7 @@ class StackGroup(object):
|
||||
|
||||
tags = _config.get('tags', {})
|
||||
parameters = _config.get('parameters', {})
|
||||
template_vars = _config.get('vars', {})
|
||||
options = _config.get('options', {})
|
||||
region = _config.get('region', 'global')
|
||||
profile = _config.get('profile', '')
|
||||
stackname_prefix = _config.get('stacknameprefix', '')
|
||||
@ -67,7 +67,7 @@ class StackGroup(object):
|
||||
|
||||
new_stack = Stack(
|
||||
name=stackname, template=template, path=stack_path, rel_path=str(self.rel_path),
|
||||
tags=dict(tags), parameters=dict(parameters), template_vars=dict(template_vars),
|
||||
tags=dict(tags), parameters=dict(parameters), options=dict(options),
|
||||
region=str(region), profile=str(profile), ctx=self.ctx)
|
||||
new_stack.read_config()
|
||||
self.stacks.append(new_stack)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user