def _get_error_responses(self): """Return error response based on site stack variables. When custom_error_responses are defined return those, if running in NonSPAMode return nothing, or return the standard error responses for a SPA. """ variables = self.get_variables() if variables['custom_error_responses']: return [ cloudfront.CustomErrorResponse( ErrorCode=response['ErrorCode'], ResponseCode=response['ResponseCode'], ResponsePagePath=response['ResponsePagePath'] ) for response in variables['custom_error_responses'] ] if variables['NonSPAMode']: return [] return [ cloudfront.CustomErrorResponse( ErrorCode=404, ResponseCode=200, ResponsePagePath='/index.html' ) ]
def _get_error_responses(self) -> List[cloudfront.CustomErrorResponse]: """Return error response based on site stack variables. When custom_error_responses are defined return those, if running in NonSPAMode return nothing, or return the standard error responses for a SPA. """ if self.variables["custom_error_responses"]: return [ cloudfront.CustomErrorResponse( ErrorCode=response["ErrorCode"], ResponseCode=response["ResponseCode"], ResponsePagePath=response["ResponsePagePath"], ) for response in self.variables["custom_error_responses"] ] if self.variables["NonSPAMode"]: return [] return [ cloudfront.CustomErrorResponse(ErrorCode=404, ResponseCode=200, ResponsePagePath="/index.html") ]
def add_errors(self, **kwargs): err = cloudfront.CustomErrorResponse() err.ErrorCachingMinTTL = kwargs.get('ttl', 300) if kwargs.get('ErrorCode'): err.ErrorCode = kwargs.get('ErrorCode') if kwargs.get('ResponseCode'): err.ResponseCode = kwargs.get('ResponseCode') if kwargs.get('ResponsePagePath'): err.ResponsePagePath = kwargs.get('ResponsePagePath') self.errors.append(err)
def render_cloudfront(context, template, origin_hostname): if not context['cloudfront']['origins']: ensure( context['full_hostname'], "A public hostname is required to be pointed at by the Cloudfront CDN" ) allowed_cnames = context['cloudfront']['subdomains'] + context[ 'cloudfront']['subdomains-without-dns'] def _cookies(cookies): if cookies: return cloudfront.Cookies(Forward='whitelist', WhitelistedNames=cookies) return cloudfront.Cookies(Forward='none') if context['cloudfront']['origins']: origins = [ cloudfront.Origin(DomainName=o['hostname'], Id=o_id, CustomOriginConfig=cloudfront.CustomOrigin( HTTPSPort=443, OriginProtocolPolicy='https-only')) for o_id, o in context['cloudfront']['origins'].items() ] origin = origins[0].Id else: origin = CLOUDFRONT_TITLE + 'Origin' origins = [ cloudfront.Origin(DomainName=origin_hostname, Id=origin, CustomOriginConfig=cloudfront.CustomOrigin( HTTPSPort=443, OriginProtocolPolicy='https-only')) ] props = { 'Aliases': allowed_cnames, 'CacheBehaviors': [], 'DefaultCacheBehavior': cloudfront.DefaultCacheBehavior( AllowedMethods=[ 'DELETE', 'GET', 'HEAD', 'OPTIONS', 'PATCH', 'POST', 'PUT' ], CachedMethods=['GET', 'HEAD'], Compress=context['cloudfront']['compress'], DefaultTTL=context['cloudfront']['default-ttl'], TargetOriginId=origin, ForwardedValues=cloudfront.ForwardedValues( Cookies=_cookies(context['cloudfront']['cookies']), Headers=context['cloudfront'] ['headers'], # 'whitelisted' headers QueryString=True), ViewerProtocolPolicy='redirect-to-https', ), 'Enabled': True, 'HttpVersion': 'http2', 'Origins': origins, 'ViewerCertificate': cloudfront.ViewerCertificate( IamCertificateId=context['cloudfront']['certificate_id'], SslSupportMethod='sni-only') } def _cache_behavior(origin_id, pattern, headers=None, cookies=None): return cloudfront.CacheBehavior( TargetOriginId=origin_id, DefaultTTL=context['cloudfront']['default-ttl'], ForwardedValues=cloudfront.ForwardedValues( Cookies=_cookies(cookies), QueryString=False, Headers=headers if headers else []), PathPattern=pattern, ViewerProtocolPolicy='allow-all', ) if context['cloudfront']['errors']: props['Origins'].append( cloudfront.Origin( DomainName=context['cloudfront']['errors']['domain'], # TODO: constant Id=CLOUDFRONT_ERROR_ORIGIN_ID, # no advantage in using cloudfront.S3Origin for public buckets CustomOriginConfig=cloudfront.CustomOrigin( HTTPSPort=443, OriginProtocolPolicy='https-only' if context['cloudfront']['errors']['protocol'] == 'https' else 'http-only'))) props['CacheBehaviors'].append( _cache_behavior( CLOUDFRONT_ERROR_ORIGIN_ID, context['cloudfront']['errors']['pattern'], )) props['CustomErrorResponses'] = [ cloudfront.CustomErrorResponse(ErrorCode=code, ResponseCode=code, ResponsePagePath=page) for code, page in context['cloudfront']['errors']['codes'].items() ] if context['cloudfront']['logging']: props['Logging'] = cloudfront.Logging( Bucket="%s.s3.amazonaws.com" % context['cloudfront']['logging']['bucket'], Prefix="%s/" % context['stackname']) if context['cloudfront']['origins']: props['CacheBehaviors'].extend([ _cache_behavior(o_id, o['pattern'], headers=o['headers'], cookies=o['cookies']) for o_id, o in context['cloudfront']['origins'].items() if o['pattern'] ]) template.add_resource( cloudfront.Distribution( CLOUDFRONT_TITLE, DistributionConfig=cloudfront.DistributionConfig(**props))) for dns in external_dns_cloudfront(context): template.add_resource(dns)
def get_cloudfront_distribution_options( self, bucket: s3.Bucket, oai: cloudfront.CloudFrontOriginAccessIdentity, lambda_function_associations: List[ cloudfront.LambdaFunctionAssociation], ) -> Dict[str, Any]: """Retrieve the options for our CloudFront distribution. Args: bucket: The bucket resource oai: The origin access identity resource. lambda_function_associations: List of Lambda Function associations. Return: The CloudFront Distribution Options. """ if os.getenv("AWS_REGION") == "us-east-1": # use global endpoint for us-east-1 origin = Join(".", [bucket.ref(), "s3.amazonaws.com"]) else: # use reginal endpoint to avoid "temporary" redirect that can last over an hour # https://forums.aws.amazon.com/message.jspa?messageID=677452 origin = Join(".", [bucket.ref(), "s3", Region, "amazonaws.com"]) return { "Aliases": self.add_aliases(), "Origins": [ cloudfront.Origin( DomainName=origin, S3OriginConfig=cloudfront. S3OriginConfig(OriginAccessIdentity=Join( "", ["origin-access-identity/cloudfront/", oai.ref()])), Id="S3Origin", ) ], "DefaultCacheBehavior": cloudfront.DefaultCacheBehavior( AllowedMethods=["GET", "HEAD"], Compress=False, DefaultTTL="86400", ForwardedValues=cloudfront.ForwardedValues( Cookies=cloudfront.Cookies(Forward="none"), QueryString=False), LambdaFunctionAssociations=lambda_function_associations, TargetOriginId="S3Origin", ViewerProtocolPolicy="redirect-to-https", ), "DefaultRootObject": "index.html", "Logging": self.add_logging_bucket(), "PriceClass": self.variables["PriceClass"], "CustomErrorResponses": [ cloudfront.CustomErrorResponse( ErrorCode=response["ErrorCode"], ResponseCode=response["ResponseCode"], ResponsePagePath=response["ResponsePagePath"], ) for response in self.variables["custom_error_responses"] ], "Enabled": True, "WebACLId": self.add_web_acl(), "ViewerCertificate": self.add_acm_cert(), }
def get_cloudfront_distribution_options( self, # type: StaticSite bucket, # type: s3.Bucket oai, # type: cloudfront.CloudFrontOriginAccessIdentity # noqa pylint: disable=line-too-long lambda_function_associations # type: List[cloudfront.LambdaFunctionAssociation] # noqa pylint: disable=line-too-long # TODO remove after dropping python 2 ): # pylint: disable=bad-continuation # type: (...) -> Dict[str, Any] """Retrieve the options for our CloudFront distribution. Keyword Args: bucket (dict): The bucket resource oai (dict): The origin access identity resource lambda_function_associations (array): The lambda function association array Return: dict: The CloudFront Distribution Options """ variables = self.get_variables() return { 'Aliases': self.add_aliases(), 'Origins': [ cloudfront.Origin( DomainName=Join('.', [bucket.ref(), 's3.amazonaws.com']), S3OriginConfig=cloudfront. S3OriginConfig(OriginAccessIdentity=Join( '', ['origin-access-identity/cloudfront/', oai.ref()])), Id='S3Origin') ], 'DefaultCacheBehavior': cloudfront.DefaultCacheBehavior( AllowedMethods=['GET', 'HEAD'], Compress=False, DefaultTTL='86400', ForwardedValues=cloudfront.ForwardedValues( Cookies=cloudfront.Cookies(Forward='none'), QueryString=False, ), LambdaFunctionAssociations=lambda_function_associations, TargetOriginId='S3Origin', ViewerProtocolPolicy='redirect-to-https'), 'DefaultRootObject': 'index.html', 'Logging': self.add_logging_bucket(), 'PriceClass': variables['PriceClass'], 'CustomErrorResponses': [ cloudfront.CustomErrorResponse( ErrorCode=response['ErrorCode'], ResponseCode=response['ResponseCode'], ResponsePagePath=response['ResponsePagePath']) for response in variables['custom_error_responses'] ], 'Enabled': True, 'WebACLId': self.add_web_acl(), 'ViewerCertificate': self.add_acm_cert() }
CacheBehaviors=[ cloudfront.CacheBehavior( AllowedMethods=['HEAD', 'GET'], CachedMethods=['HEAD', 'GET'], ForwardedValues=cloudfront.ForwardedValues( QueryString=False ), PathPattern='*', TargetOriginId=Join('-', ['S3', Ref(frontend_bucket)]), ViewerProtocolPolicy='redirect-to-https' ) ], CustomErrorResponses=[ cloudfront.CustomErrorResponse( ErrorCode=404, ResponseCode=200, ResponsePagePath='/index.html' ) ], DefaultCacheBehavior=cloudfront.DefaultCacheBehavior( ForwardedValues=cloudfront.ForwardedValues( QueryString=False ), TargetOriginId=Join('-', ['S3', Ref(frontend_bucket)]), ViewerProtocolPolicy='redirect-to-https' ), DefaultRootObject='index.html', Enabled=True, IPV6Enabled=True, Origins=[ cloudfront.Origin(
CachedMethods=['GET', 'HEAD'], ViewerProtocolPolicy='redirect-to-https', TargetOriginId='{}-{}-{}'.format(env_l, app_group_l, src_domain), ForwardedValues=cf.ForwardedValues( Headers=["Accept-Encoding"], QueryString=True, ), MinTTL=0, MaxTTL=int(max_ttl[0]), DefaultTTL=int(default_ttl[0]), SmoothStreaming=False, Compress=True), CustomErrorResponses=[ cf.CustomErrorResponse( ErrorCachingMinTTL='0', ErrorCode='403', ), cf.CustomErrorResponse( ErrorCachingMinTTL='0', ErrorCode='404', ), cf.CustomErrorResponse( ErrorCachingMinTTL='0', ErrorCode='500', ), cf.CustomErrorResponse( ErrorCachingMinTTL='0', ErrorCode='501', ), cf.CustomErrorResponse( ErrorCachingMinTTL='0',
def get_cloudfront_distribution_options( self, bucket, # type: s3.Bucket oai, # type: cloudfront.CloudFrontOriginAccessIdentity lambda_function_associations, # type: List[cloudfront.LambdaFunctionAssociation] ): # type: (...) -> Dict[str, Any] """Retrieve the options for our CloudFront distribution. Args: bucket: The bucket resource oai: The origin access identity resource. lambda_function_associations: List of Lambda Function associations. Return: The CloudFront Distribution Options. """ variables = self.get_variables() return { "Aliases": self.add_aliases(), "Origins": [ cloudfront.Origin( DomainName=Join(".", [bucket.ref(), "s3.amazonaws.com"]), S3OriginConfig=cloudfront. S3OriginConfig(OriginAccessIdentity=Join( "", ["origin-access-identity/cloudfront/", oai.ref()])), Id="S3Origin", ) ], "DefaultCacheBehavior": cloudfront.DefaultCacheBehavior( AllowedMethods=["GET", "HEAD"], Compress=False, DefaultTTL="86400", ForwardedValues=cloudfront.ForwardedValues( Cookies=cloudfront.Cookies(Forward="none"), QueryString=False, ), LambdaFunctionAssociations=lambda_function_associations, TargetOriginId="S3Origin", ViewerProtocolPolicy="redirect-to-https", ), "DefaultRootObject": "index.html", "Logging": self.add_logging_bucket(), "PriceClass": variables["PriceClass"], "CustomErrorResponses": [ cloudfront.CustomErrorResponse( ErrorCode=response["ErrorCode"], ResponseCode=response["ResponseCode"], ResponsePagePath=response["ResponsePagePath"], ) for response in variables["custom_error_responses"] ], "Enabled": True, "WebACLId": self.add_web_acl(), "ViewerCertificate": self.add_acm_cert(), }
def create_template(self): """Create template (main function called by Stacker).""" template = self.template variables = self.get_variables() template.set_version('2010-09-09') template.set_description('Static Website - Bucket and Distribution') # Conditions template.add_condition( 'AcmCertSpecified', And(Not(Equals(variables['AcmCertificateArn'].ref, '')), Not(Equals(variables['AcmCertificateArn'].ref, 'undefined'))) ) template.add_condition( 'AliasesSpecified', And(Not(Equals(Select(0, variables['Aliases'].ref), '')), Not(Equals(Select(0, variables['Aliases'].ref), 'undefined'))) ) template.add_condition( 'CFLoggingEnabled', And(Not(Equals(variables['LogBucketName'].ref, '')), Not(Equals(variables['LogBucketName'].ref, 'undefined'))) ) template.add_condition( 'DirectoryIndexSpecified', And(Not(Equals(variables['RewriteDirectoryIndex'].ref, '')), Not(Equals(variables['RewriteDirectoryIndex'].ref, 'undefined'))) # noqa ) template.add_condition( 'WAFNameSpecified', And(Not(Equals(variables['WAFWebACL'].ref, '')), Not(Equals(variables['WAFWebACL'].ref, 'undefined'))) ) # Resources oai = template.add_resource( cloudfront.CloudFrontOriginAccessIdentity( 'OAI', CloudFrontOriginAccessIdentityConfig=cloudfront.CloudFrontOriginAccessIdentityConfig( # noqa pylint: disable=line-too-long Comment='CF access to website' ) ) ) bucket = template.add_resource( s3.Bucket( 'Bucket', AccessControl=s3.Private, LifecycleConfiguration=s3.LifecycleConfiguration( Rules=[ s3.LifecycleRule( NoncurrentVersionExpirationInDays=90, Status='Enabled' ) ] ), VersioningConfiguration=s3.VersioningConfiguration( Status='Enabled' ), WebsiteConfiguration=s3.WebsiteConfiguration( IndexDocument='index.html', ErrorDocument='error.html' ) ) ) template.add_output(Output( 'BucketName', Description='Name of website bucket', Value=bucket.ref() )) allowcfaccess = template.add_resource( s3.BucketPolicy( 'AllowCFAccess', Bucket=bucket.ref(), PolicyDocument=PolicyDocument( Version='2012-10-17', Statement=[ Statement( Action=[awacs.s3.GetObject], Effect=Allow, Principal=Principal( 'CanonicalUser', oai.get_att('S3CanonicalUserId') ), Resource=[ Join('', [bucket.get_att('Arn'), '/*']) ] ) ] ) ) ) cfdirectoryindexrewriterole = template.add_resource( iam.Role( 'CFDirectoryIndexRewriteRole', Condition='DirectoryIndexSpecified', AssumeRolePolicyDocument=PolicyDocument( Version='2012-10-17', Statement=[ Statement( Effect=Allow, Action=[awacs.sts.AssumeRole], Principal=Principal('Service', ['lambda.amazonaws.com', 'edgelambda.amazonaws.com']) ) ] ), ManagedPolicyArns=[ IAM_ARN_PREFIX + 'AWSLambdaBasicExecutionRole' ] ) ) cfdirectoryindexrewrite = template.add_resource( awslambda.Function( 'CFDirectoryIndexRewrite', Condition='DirectoryIndexSpecified', Code=awslambda.Code( ZipFile=Join( '', ["'use strict';\n", "exports.handler = (event, context, callback) => {\n", "\n", " // Extract the request from the CloudFront event that is sent to Lambda@Edge\n", # noqa pylint: disable=line-too-long " var request = event.Records[0].cf.request;\n", " // Extract the URI from the request\n", " var olduri = request.uri;\n", " // Match any '/' that occurs at the end of a URI. Replace it with a default index\n", # noqa pylint: disable=line-too-long " var newuri = olduri.replace(/\\/$/, '\\/", variables['RewriteDirectoryIndex'].ref, "');\n", # noqa " // Log the URI as received by CloudFront and the new URI to be used to fetch from origin\n", # noqa pylint: disable=line-too-long " console.log(\"Old URI: \" + olduri);\n", " console.log(\"New URI: \" + newuri);\n", " // Replace the received URI with the URI that includes the index page\n", # noqa pylint: disable=line-too-long " request.uri = newuri;\n", " // Return to CloudFront\n", " return callback(null, request);\n", "\n", "};\n"] ) ), Description='Rewrites CF directory HTTP requests to default page', # noqa Handler='index.handler', Role=cfdirectoryindexrewriterole.get_att('Arn'), Runtime='nodejs8.10' ) ) # Generating a unique resource name here for the Lambda version, so it # updates automatically if the lambda code changes code_hash = hashlib.md5( str(cfdirectoryindexrewrite.properties['Code'].properties['ZipFile'].to_dict()).encode() # noqa pylint: disable=line-too-long ).hexdigest() cfdirectoryindexrewritever = template.add_resource( awslambda.Version( 'CFDirectoryIndexRewriteVer' + code_hash, Condition='DirectoryIndexSpecified', FunctionName=cfdirectoryindexrewrite.ref() ) ) # If custom associations defined, use them if variables['lambda_function_associations']: lambda_function_associations = [ cloudfront.LambdaFunctionAssociation( EventType=x['type'], LambdaFunctionARN=x['arn'] ) for x in variables['lambda_function_associations'] ] else: # otherwise fallback to pure CFN condition lambda_function_associations = If( 'DirectoryIndexSpecified', [cloudfront.LambdaFunctionAssociation( EventType='origin-request', LambdaFunctionARN=cfdirectoryindexrewritever.ref() )], NoValue ) cf_dist_opts = { 'Aliases': If( 'AliasesSpecified', variables['Aliases'].ref, NoValue ), 'Origins': [ get_cf_origin_class()( DomainName=Join( '.', [bucket.ref(), 's3.amazonaws.com']), S3OriginConfig=get_s3_origin_conf_class()( OriginAccessIdentity=Join( '', ['origin-access-identity/cloudfront/', oai.ref()]) ), Id='S3Origin' ) ], 'DefaultCacheBehavior': cloudfront.DefaultCacheBehavior( AllowedMethods=['GET', 'HEAD'], Compress=False, DefaultTTL='86400', ForwardedValues=cloudfront.ForwardedValues( Cookies=cloudfront.Cookies(Forward='none'), QueryString=False, ), LambdaFunctionAssociations=lambda_function_associations, TargetOriginId='S3Origin', ViewerProtocolPolicy='redirect-to-https' ), 'DefaultRootObject': 'index.html', 'Logging': If( 'CFLoggingEnabled', cloudfront.Logging( Bucket=Join('.', [variables['LogBucketName'].ref, 's3.amazonaws.com']) ), NoValue ), 'PriceClass': variables['PriceClass'].ref, 'Enabled': True, 'WebACLId': If( 'WAFNameSpecified', variables['WAFWebACL'].ref, NoValue ), 'ViewerCertificate': If( 'AcmCertSpecified', cloudfront.ViewerCertificate( AcmCertificateArn=variables['AcmCertificateArn'].ref, SslSupportMethod='sni-only' ), NoValue ) } # If custom error responses defined, use them if variables['custom_error_responses']: cf_dist_opts['CustomErrorResponses'] = [ cloudfront.CustomErrorResponse( **x ) for x in variables['custom_error_responses'] ] cfdistribution = template.add_resource( get_cf_distribution_class()( 'CFDistribution', DependsOn=allowcfaccess.title, DistributionConfig=get_cf_distro_conf_class()( **cf_dist_opts ) ) ) template.add_output(Output( 'CFDistributionId', Description='CloudFront distribution ID', Value=cfdistribution.ref() )) template.add_output( Output( 'CFDistributionDomainName', Description='CloudFront distribution domain name', Value=cfdistribution.get_att('DomainName') ) )