def add_bucket(tags, template, versioning):
template.add_resource(
Bucket("GetMeABucket",
BucketEncryption=BucketEncryption(
ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(ServerSideEncryptionByDefault=
ServerSideEncryptionByDefault(
SSEAlgorithm="aws:kms", ))
]),
DeletionPolicy="Retain",
PublicAccessBlockConfiguration=PublicAccessBlockConfiguration(
BlockPublicAcls=True,
BlockPublicPolicy=True,
IgnorePublicAcls=True,
RestrictPublicBuckets=True,
),
Tags=tags,
VersioningConfiguration=VersioningConfiguration(
Status=versioning, )))
template.add_output(
Output("BucketName",
Description="Bucket name",
Value=Ref("GetMeABucket")))
template.add_output(
Output("BucketNameARN",
Description="Bucket name Arn",
Value=GetAtt("GetMeABucket", "Arn")))
def set_bucket_encryption(self, **kwargs):
"""
returns:
EncryptionConfiguration for S3Bucket
"""
if 'KMSMasterKeyID' in kwargs.keys():
encryption_default = ServerSideEncryptionByDefault(
SSEAlgorithm='aws:kms',
KMSMasterKeyID=kwargs['KMSMasterKeyID'])
else:
encryption_default = ServerSideEncryptionByDefault(
SSEAlgorithm='aws:kms')
config = BucketEncryption(ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(
ServerSideEncryptionByDefault=encryption_default)
])
setattr(self, 'BucketEncryption', config)
from troposphere import GetAtt, Join, Ref, Sub, Template
from troposphere.s3 import Bucket, BucketEncryption, ServerSideEncryptionByDefault, ServerSideEncryptionRule, LifecycleConfiguration, LifecycleRule, LifecycleRuleTransition, NoncurrentVersionTransition, PublicAccessBlockConfiguration, BucketPolicy
region = "eu-west-1"
template = Template(region + " s3")
# TODO seperate out management and log buckets
management_bucket = Bucket(
region.replace("-", "") + "managementbucket",
BucketName="mgmt.eu-west-1.weblox.io",
BucketEncryption=BucketEncryption(ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(
ServerSideEncryptionByDefault=ServerSideEncryptionByDefault(
SSEAlgorithm="AES256")),
]),
LifecycleConfiguration=LifecycleConfiguration(Rules=[
LifecycleRule(
Id="ExpireLogs",
Prefix="logs/",
Status="Enabled",
ExpirationInDays=30,
),
]),
PublicAccessBlockConfiguration=PublicAccessBlockConfiguration(
BlockPublicAcls=True,
BlockPublicPolicy=True,
IgnorePublicAcls=True,
RestrictPublicBuckets=True))
template.add_resource(management_bucket)
"When true, AES256 encryption is enabled for all asset buckets.",
Type="String",
AllowedValues=["true", "false"],
Default="false",
),
group="Static Media",
label="Enable AES256 Encryption",
)
use_aes256_encryption_cond = "AssetsUseS3EncryptionCondition"
template.add_condition(use_aes256_encryption_cond,
Equals(Ref(use_aes256_encryption), "true"))
common_bucket_conf = dict(
BucketEncryption=BucketEncryption(
ServerSideEncryptionConfiguration=If(use_aes256_encryption_cond, [
ServerSideEncryptionRule(
ServerSideEncryptionByDefault=ServerSideEncryptionByDefault(
SSEAlgorithm='AES256'))
], [ServerSideEncryptionRule()])),
VersioningConfiguration=VersioningConfiguration(Status="Enabled"),
DeletionPolicy="Retain",
CorsConfiguration=CorsConfiguration(
CorsRules=[
CorsRules(
AllowedOrigins=Split(
";",
Join(
"",
[
"https://",
domain_name,
If(
"AWS":
Join(":", ["arn:aws:iam:",
Ref("AWS::AccountId"), "root"])
},
"Action": "kms:*",
"Resource": "*"
}]
}))
#Encryption configs for input and output buckets
bucket_encryption_config = ServerSideEncryptionByDefault(
KMSMasterKeyID=GetAtt('projectkey', "Arn"), SSEAlgorithm='aws:kms')
bucket_encryption_rule = ServerSideEncryptionRule(
ServerSideEncryptionByDefault=bucket_encryption_config)
bucket_encryption = BucketEncryption(
ServerSideEncryptionConfiguration=[bucket_encryption_rule])
#Encryption configs for codepipeline bucket
cp_bucket_encryption_config = ServerSideEncryptionByDefault(
SSEAlgorithm='AES256')
cp_bucket_encryption_rule = ServerSideEncryptionRule(
ServerSideEncryptionByDefault=cp_bucket_encryption_config)
cp_bucket_encryption = BucketEncryption(
ServerSideEncryptionConfiguration=[cp_bucket_encryption_rule])
input_bucket = t.add_resource(
Bucket(
'InputBucket',
AccessControl='Private',
BucketName=Join("",
DependsOn=[KMS_KEY, KMS_ALIAS],
BucketName=Sub('${BucketName}-${AWS::Region}'),
VersioningConfiguration=VersioningConfiguration(Status='Enabled'),
LifecycleConfiguration=LifecycleConfiguration(Rules=[
LifecycleRule(
Status='Enabled',
AbortIncompleteMultipartUpload=AbortIncompleteMultipartUpload(
DaysAfterInitiation=3),
NoncurrentVersionExpirationInDays=1,
Transition=LifecycleRuleTransition(StorageClass='GLACIER',
TransitionInDays=If(
SOURCE_REGION_CON, 31, 14)))
]),
BucketEncryption=BucketEncryption(ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(
ServerSideEncryptionByDefault=ServerSideEncryptionByDefault(
SSEAlgorithm='aws:kms', KMSMasterKeyID=Ref(KMS_KEY)))
]),
ReplicationConfiguration=If(
SOURCE_REGION_CON,
ReplicationConfiguration(
Role=GetAtt(IAM_ROLE, 'Arn'),
Rules=[
ReplicationConfigurationRules(
Destination=ReplicationConfigurationRulesDestination(
Bucket=Sub(
f"arn:${{AWS::Partition}}:s3:::${{{BUCKET_NAME.title}}}-${{{REPLICA_REGION.title}}}"
),
EncryptionConfiguration=
EncryptionConfiguration(ReplicaKmsKeyID=Sub(
f"arn:${{AWS::Partition}}:kms:${{{REPLICA_REGION.title}}}:${{AWS::AccountId}}:alias/${{{REPLICA_REGION.title}}}/${{{BUCKET_NAME.title}}}"
def create_primary_template():
template = Template(
Description="Root stack for VERY STRONG Lambda function")
image_digest = template.add_parameter(
Parameter("ImageDigest", Type="String", Default=""))
is_image_digest_defined = "IsImageDigestDefined"
template.add_condition(is_image_digest_defined,
Not(Equals(Ref(image_digest), "")))
artifact_repository = template.add_resource(
Repository(
"ArtifactRepository",
ImageTagMutability="MUTABLE",
LifecyclePolicy=LifecyclePolicy(LifecyclePolicyText=json.dumps(
{
"rules": [{
"rulePriority": 1,
"selection": {
"tagStatus": "untagged",
"countType": "imageCountMoreThan",
"countNumber": 3,
},
"action": {
"type": "expire",
},
}]
},
indent=None,
sort_keys=True,
separators=(",", ":"),
)),
))
artifact_repository_url = Join(
"/",
[
Join(
".",
[
AccountId,
"dkr",
"ecr",
Region,
URLSuffix,
],
),
Ref(artifact_repository),
],
)
image_uri = Join("@", [artifact_repository_url, Ref(image_digest)])
artifact_bucket = template.add_resource(
Bucket(
"ArtifactBucket",
BucketEncryption=BucketEncryption(
ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(
BucketKeyEnabled=True,
ServerSideEncryptionByDefault=
ServerSideEncryptionByDefault(
SSEAlgorithm="aws:kms",
KMSMasterKeyID=Join(":", [
"arn", Partition, "kms", Region, AccountId,
"alias/aws/s3"
]),
),
)
], ),
LifecycleConfiguration=LifecycleConfiguration(Rules=[
LifecycleRule(
AbortIncompleteMultipartUpload=
AbortIncompleteMultipartUpload(DaysAfterInitiation=3, ),
Status="Enabled",
),
], ),
PublicAccessBlockConfiguration=PublicAccessBlockConfiguration(
BlockPublicAcls=True,
BlockPublicPolicy=True,
IgnorePublicAcls=True,
RestrictPublicBuckets=True,
),
))
deployment_id_stack = template.add_resource(
Stack(
"DeploymentId",
TemplateURL=common.get_template_s3_url(
Ref(artifact_bucket), deployment_id.create_template()),
Parameters={
"ArtifactBucket": Ref(artifact_bucket),
},
Condition=is_image_digest_defined,
))
availability_zones_stack = template.add_resource(
Stack(
"AvailabilityZones",
TemplateURL=common.get_template_s3_url(
Ref(artifact_bucket), availability_zones.create_template()),
Parameters={
"DeploymentId": GetAtt(deployment_id_stack, "Outputs.Value"),
"ImageUri": image_uri,
},
Condition=is_image_digest_defined,
))
vpc_stack = template.add_resource(
Stack(
"Vpc",
TemplateURL=common.get_template_s3_url(Ref(artifact_bucket),
vpc.create_template()),
Parameters={
"AvailabilityZones":
GetAtt(availability_zones_stack, "Outputs.AvailabilityZones"),
},
Condition=is_image_digest_defined,
))
lambda_eip_allocator_stack = template.add_resource(
Stack(
"LambdaEipAllocator",
TemplateURL=common.get_template_s3_url(
Ref(artifact_bucket), lambda_eip_allocator.create_template()),
Parameters={
"DeploymentId": GetAtt(deployment_id_stack, "Outputs.Value"),
"VpcId": GetAtt(vpc_stack, "Outputs.VpcId"),
"ImageUri": image_uri,
},
Condition=is_image_digest_defined,
))
elastic_file_system_stack = template.add_resource(
Stack(
"ElasticFileSystem",
TemplateURL=common.get_template_s3_url(
Ref(artifact_bucket), elastic_file_system.create_template()),
Parameters={
"VpcId":
GetAtt(vpc_stack, "Outputs.VpcId"),
"SubnetIds":
GetAtt(vpc_stack, "Outputs.SubnetIds"),
"AvailabilityZones":
GetAtt(availability_zones_stack, "Outputs.AvailabilityZones"),
},
Condition=is_image_digest_defined,
))
lambda_function_stack = template.add_resource(
Stack(
"LambdaFunction",
TemplateURL=common.get_template_s3_url(
Ref(artifact_bucket), lambda_function.create_template()),
Parameters={
"DeploymentId":
GetAtt(deployment_id_stack, "Outputs.Value"),
"VpcId":
GetAtt(vpc_stack, "Outputs.VpcId"),
"SubnetIds":
GetAtt(vpc_stack, "Outputs.SubnetIds"),
"FileSystemAccessPointArn":
GetAtt(elastic_file_system_stack, "Outputs.AccessPointArn"),
"ImageUri":
image_uri,
},
DependsOn=[lambda_eip_allocator_stack],
Condition=is_image_digest_defined,
))
image_tagger_stack = template.add_resource(
Stack(
"ImageTagger",
TemplateURL=common.get_template_s3_url(
Ref(artifact_bucket), image_tagger.create_template()),
Parameters={
"DeploymentId": GetAtt(deployment_id_stack, "Outputs.Value"),
"ArtifactRepository": Ref(artifact_repository),
"DesiredImageTag": "current-cloudformation",
"ImageDigest": Ref(image_digest),
"ImageUri": image_uri,
},
DependsOn=list(template.resources),
Condition=is_image_digest_defined,
))
template.add_output(Output(
"ArtifactBucket",
Value=Ref(artifact_bucket),
))
template.add_output(
Output(
"ArtifactRepositoryUrl",
Value=artifact_repository_url,
))
return template
def create_template():
template = Template(Description=(
"Static website hosted with S3 and CloudFront. "
"https://github.com/schlarpc/overengineered-cloudfront-s3-static-website"
))
partition_config = add_mapping(
template,
"PartitionConfig",
{
"aws": {
# the region with the control plane for CloudFront, IAM, Route 53, etc
"PrimaryRegion":
"us-east-1",
# assume that Lambda@Edge replicates to all default enabled regions, and that
# future regions will be opt-in. generated with AWS CLI:
# aws ec2 describe-regions --all-regions --query "Regions[?OptInStatus=='opt-in-not-required'].RegionName|sort(@)"
"DefaultRegions": [
"ap-northeast-1",
"ap-northeast-2",
"ap-northeast-3",
"ap-south-1",
"ap-southeast-1",
"ap-southeast-2",
"ca-central-1",
"eu-central-1",
"eu-north-1",
"eu-west-1",
"eu-west-2",
"eu-west-3",
"sa-east-1",
"us-east-1",
"us-east-2",
"us-west-1",
"us-west-2",
],
},
# this doesn't actually work, because Lambda@Edge isn't supported in aws-cn
"aws-cn": {
"PrimaryRegion": "cn-north-1",
"DefaultRegions": ["cn-north-1", "cn-northwest-1"],
},
},
)
acm_certificate_arn = template.add_parameter(
Parameter(
"AcmCertificateArn",
Description=
"Existing ACM certificate to use for serving TLS. Overrides HostedZoneId.",
Type="String",
AllowedPattern="(arn:[^:]+:acm:[^:]+:[^:]+:certificate/.+|)",
Default="",
))
hosted_zone_id = template.add_parameter(
Parameter(
"HostedZoneId",
Description=
"Existing Route 53 zone to use for validating a new TLS certificate.",
Type="String",
AllowedPattern="(Z[A-Z0-9]+|)",
Default="",
))
dns_names = template.add_parameter(
Parameter(
"DomainNames",
Description=
"Comma-separated list of additional domain names to serve.",
Type="CommaDelimitedList",
Default="",
))
tls_protocol_version = template.add_parameter(
Parameter(
"TlsProtocolVersion",
Description=
"CloudFront TLS security policy; see https://amzn.to/2DR91Xq for details.",
Type="String",
Default="TLSv1.2_2019",
))
log_retention_days = template.add_parameter(
Parameter(
"LogRetentionDays",
Description=
"Days to keep CloudFront, S3, and Lambda logs. 0 means indefinite retention.",
Type="Number",
AllowedValues=[0] + CLOUDWATCH_LOGS_RETENTION_OPTIONS,
Default=365,
))
default_ttl_seconds = template.add_parameter(
Parameter(
"DefaultTtlSeconds",
Description="Cache time-to-live when not set by S3 object headers.",
Type="Number",
Default=int(datetime.timedelta(minutes=5).total_seconds()),
))
enable_price_class_hack = template.add_parameter(
Parameter(
"EnablePriceClassHack",
Description="Cut your bill in half with this one weird trick.",
Type="String",
Default="false",
AllowedValues=["true", "false"],
))
retention_defined = add_condition(template, "RetentionDefined",
Not(Equals(Ref(log_retention_days), 0)))
using_price_class_hack = add_condition(
template, "UsingPriceClassHack",
Equals(Ref(enable_price_class_hack), "true"))
using_acm_certificate = add_condition(
template, "UsingAcmCertificate",
Not(Equals(Ref(acm_certificate_arn), "")))
using_hosted_zone = add_condition(template, "UsingHostedZone",
Not(Equals(Ref(hosted_zone_id), "")))
using_certificate = add_condition(
template,
"UsingCertificate",
Or(Condition(using_acm_certificate), Condition(using_hosted_zone)),
)
should_create_certificate = add_condition(
template,
"ShouldCreateCertificate",
And(Condition(using_hosted_zone),
Not(Condition(using_acm_certificate))),
)
using_dns_names = add_condition(template, "UsingDnsNames",
Not(Equals(Select(0, Ref(dns_names)), "")))
is_primary_region = "IsPrimaryRegion"
template.add_condition(
is_primary_region,
Equals(Region, FindInMap(partition_config, Partition,
"PrimaryRegion")),
)
precondition_region_is_primary = template.add_resource(
WaitConditionHandle(
"PreconditionIsPrimaryRegionForPartition",
Condition=is_primary_region,
))
log_ingester_dlq = template.add_resource(
Queue(
"LogIngesterDLQ",
MessageRetentionPeriod=int(
datetime.timedelta(days=14).total_seconds()),
KmsMasterKeyId="alias/aws/sqs",
))
log_ingester_role = template.add_resource(
Role(
"LogIngesterRole",
AssumeRolePolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect="Allow",
Principal=Principal("Service", "lambda.amazonaws.com"),
Action=[sts.AssumeRole],
)
],
),
Policies=[
PolicyProperty(
PolicyName="DLQPolicy",
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Action=[sqs.SendMessage],
Resource=[GetAtt(log_ingester_dlq, "Arn")],
)
],
),
)
],
))
log_ingester = template.add_resource(
Function(
"LogIngester",
Runtime=PYTHON_RUNTIME,
Handler="index.{}".format(log_ingest.handler.__name__),
Code=Code(ZipFile=inspect.getsource(log_ingest)),
MemorySize=256,
Timeout=300,
Role=GetAtt(log_ingester_role, "Arn"),
DeadLetterConfig=DeadLetterConfig(
TargetArn=GetAtt(log_ingester_dlq, "Arn")),
))
log_ingester_permission = template.add_resource(
Permission(
"LogIngesterPermission",
FunctionName=GetAtt(log_ingester, "Arn"),
Action="lambda:InvokeFunction",
Principal="s3.amazonaws.com",
SourceAccount=AccountId,
))
log_bucket = template.add_resource(
Bucket(
"LogBucket",
# S3 requires this ACL (regardless of bucket policy) or s3:PutBucketLogging fails.
# When the CloudFront distribution is created, it adds an additional bucket ACL.
# That ACL is not possible to model in CloudFormation.
AccessControl="LogDeliveryWrite",
LifecycleConfiguration=LifecycleConfiguration(Rules=[
LifecycleRule(ExpirationInDays=1, Status="Enabled"),
LifecycleRule(
AbortIncompleteMultipartUpload=
AbortIncompleteMultipartUpload(DaysAfterInitiation=1),
Status="Enabled",
),
]),
NotificationConfiguration=NotificationConfiguration(
LambdaConfigurations=[
LambdaConfigurations(Event="s3:ObjectCreated:*",
Function=GetAtt(log_ingester, "Arn"))
]),
BucketEncryption=BucketEncryption(
ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(
ServerSideEncryptionByDefault=
ServerSideEncryptionByDefault(
# if we use KMS, we can't read the logs
SSEAlgorithm="AES256"))
]),
OwnershipControls=OwnershipControls(Rules=[
OwnershipControlsRule(ObjectOwnership="BucketOwnerPreferred")
], ),
PublicAccessBlockConfiguration=PublicAccessBlockConfiguration(
BlockPublicAcls=True,
BlockPublicPolicy=True,
IgnorePublicAcls=True,
RestrictPublicBuckets=True,
),
DependsOn=[log_ingester_permission],
))
log_ingester_log_group = template.add_resource(
LogGroup(
"LogIngesterLogGroup",
LogGroupName=Join(
"", ["/aws/lambda/", Ref(log_ingester)]),
RetentionInDays=If(retention_defined, Ref(log_retention_days),
NoValue),
))
log_ingester_policy = template.add_resource(
PolicyType(
"LogIngesterPolicy",
Roles=[Ref(log_ingester_role)],
PolicyName="IngestLogPolicy",
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Action=[logs.CreateLogStream, logs.PutLogEvents],
Resource=[
Join(
":",
[
"arn",
Partition,
"logs",
Region,
AccountId,
"log-group",
"/aws/cloudfront/*",
],
),
Join(
":",
[
"arn",
Partition,
"logs",
Region,
AccountId,
"log-group",
"/aws/s3/*",
],
),
GetAtt(log_ingester_log_group, "Arn"),
],
),
Statement(
Effect=Allow,
Action=[s3.GetObject],
Resource=[Join("", [GetAtt(log_bucket, "Arn"), "/*"])],
),
],
),
))
bucket = template.add_resource(
Bucket(
"ContentBucket",
LifecycleConfiguration=LifecycleConfiguration(Rules=[
# not supported by CFN yet:
# LifecycleRule(
# Transitions=[
# LifecycleRuleTransition(
# StorageClass='INTELLIGENT_TIERING',
# TransitionInDays=1,
# ),
# ],
# Status="Enabled",
# ),
LifecycleRule(
AbortIncompleteMultipartUpload=
AbortIncompleteMultipartUpload(DaysAfterInitiation=7),
Status="Enabled",
)
]),
LoggingConfiguration=LoggingConfiguration(
DestinationBucketName=Ref(log_bucket), LogFilePrefix="s3/"),
BucketEncryption=BucketEncryption(
ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(
ServerSideEncryptionByDefault=
ServerSideEncryptionByDefault(
# Origin Access Identities can't use KMS
SSEAlgorithm="AES256"))
]),
OwnershipControls=OwnershipControls(Rules=[
OwnershipControlsRule(ObjectOwnership="BucketOwnerPreferred")
], ),
PublicAccessBlockConfiguration=PublicAccessBlockConfiguration(
BlockPublicAcls=True,
BlockPublicPolicy=True,
IgnorePublicAcls=True,
RestrictPublicBuckets=True,
),
))
origin_access_identity = template.add_resource(
CloudFrontOriginAccessIdentity(
"CloudFrontIdentity",
CloudFrontOriginAccessIdentityConfig=
CloudFrontOriginAccessIdentityConfig(
Comment=GetAtt(bucket, "Arn")),
))
bucket_policy = template.add_resource(
BucketPolicy(
"ContentBucketPolicy",
Bucket=Ref(bucket),
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Principal=Principal(
"CanonicalUser",
GetAtt(origin_access_identity,
"S3CanonicalUserId"),
),
Action=[s3.GetObject],
Resource=[Join("", [GetAtt(bucket, "Arn"), "/*"])],
),
],
),
))
# Not strictly necessary, as ACLs should take care of this access. However, CloudFront docs
# state "In some circumstances [...] S3 resets permissions on the bucket to the default value",
# and this allows logging to work without any ACLs in place.
log_bucket_policy = template.add_resource(
BucketPolicy(
"LogBucketPolicy",
Bucket=Ref(log_bucket),
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Principal=Principal("Service",
"delivery.logs.amazonaws.com"),
Action=[s3.PutObject],
Resource=[
Join(
"/",
[GetAtt(log_bucket, "Arn"), "cloudfront", "*"])
],
),
Statement(
Effect=Allow,
Principal=Principal("Service",
"delivery.logs.amazonaws.com"),
Action=[s3.ListBucket],
Resource=[Join("/", [GetAtt(log_bucket, "Arn")])],
),
Statement(
Effect=Allow,
Principal=Principal("Service", "s3.amazonaws.com"),
Action=[s3.PutObject],
Resource=[
Join("/", [GetAtt(log_bucket, "Arn"), "s3", "*"])
],
),
],
),
))
certificate_validator_dlq = template.add_resource(
Queue(
"CertificateValidatorDLQ",
MessageRetentionPeriod=int(
datetime.timedelta(days=14).total_seconds()),
KmsMasterKeyId="alias/aws/sqs",
Condition=should_create_certificate,
))
certificate_validator_role = template.add_resource(
Role(
"CertificateValidatorRole",
AssumeRolePolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect="Allow",
Principal=Principal("Service", "lambda.amazonaws.com"),
Action=[sts.AssumeRole],
)
],
),
Policies=[
PolicyProperty(
PolicyName="DLQPolicy",
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Action=[sqs.SendMessage],
Resource=[
GetAtt(certificate_validator_dlq, "Arn")
],
)
],
),
)
],
# TODO scope down
ManagedPolicyArns=[
"arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole",
"arn:aws:iam::aws:policy/AmazonRoute53FullAccess",
"arn:aws:iam::aws:policy/AWSCertificateManagerReadOnly",
],
Condition=should_create_certificate,
))
certificate_validator_function = template.add_resource(
Function(
"CertificateValidatorFunction",
Runtime=PYTHON_RUNTIME,
Handler="index.{}".format(certificate_validator.handler.__name__),
Code=Code(ZipFile=inspect.getsource(certificate_validator)),
MemorySize=256,
Timeout=300,
Role=GetAtt(certificate_validator_role, "Arn"),
DeadLetterConfig=DeadLetterConfig(
TargetArn=GetAtt(certificate_validator_dlq, "Arn")),
Environment=Environment(
Variables={
certificate_validator.EnvVars.HOSTED_ZONE_ID.name:
Ref(hosted_zone_id)
}),
Condition=should_create_certificate,
))
certificate_validator_log_group = template.add_resource(
LogGroup(
"CertificateValidatorLogGroup",
LogGroupName=Join(
"", ["/aws/lambda/",
Ref(certificate_validator_function)]),
RetentionInDays=If(retention_defined, Ref(log_retention_days),
NoValue),
Condition=should_create_certificate,
))
certificate_validator_rule = template.add_resource(
Rule(
"CertificateValidatorRule",
EventPattern={
"detail-type": ["AWS API Call via CloudTrail"],
"detail": {
"eventSource": ["acm.amazonaws.com"],
"eventName": ["AddTagsToCertificate"],
"requestParameters": {
"tags": {
"key": [certificate_validator_function.title],
"value":
[GetAtt(certificate_validator_function, "Arn")],
}
},
},
},
Targets=[
Target(
Id="certificate-validator-lambda",
Arn=GetAtt(certificate_validator_function, "Arn"),
)
],
DependsOn=[certificate_validator_log_group],
Condition=should_create_certificate,
))
certificate_validator_permission = template.add_resource(
Permission(
"CertificateValidatorPermission",
FunctionName=GetAtt(certificate_validator_function, "Arn"),
Action="lambda:InvokeFunction",
Principal="events.amazonaws.com",
SourceArn=GetAtt(certificate_validator_rule, "Arn"),
Condition=should_create_certificate,
))
certificate = template.add_resource(
Certificate(
"Certificate",
DomainName=Select(0, Ref(dns_names)),
SubjectAlternativeNames=Ref(
dns_names), # duplicate first name works fine
ValidationMethod="DNS",
Tags=Tags(
**{
certificate_validator_function.title:
GetAtt(certificate_validator_function, "Arn")
}),
DependsOn=[certificate_validator_permission],
Condition=should_create_certificate,
))
edge_hook_role = template.add_resource(
Role(
"EdgeHookRole",
AssumeRolePolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect="Allow",
Principal=Principal(
"Service",
[
"lambda.amazonaws.com",
"edgelambda.amazonaws.com"
],
),
Action=[sts.AssumeRole],
)
],
),
))
edge_hook_function = template.add_resource(
Function(
"EdgeHookFunction",
Runtime=PYTHON_RUNTIME,
Handler="index.handler",
Code=Code(ZipFile=inspect.getsource(edge_hook)),
MemorySize=128,
Timeout=3,
Role=GetAtt(edge_hook_role, "Arn"),
))
edge_hook_function_hash = (hashlib.sha256(
json.dumps(edge_hook_function.to_dict(),
sort_keys=True).encode("utf-8")).hexdigest()[:10].upper())
edge_hook_version = template.add_resource(
Version(
"EdgeHookVersion" + edge_hook_function_hash,
FunctionName=GetAtt(edge_hook_function, "Arn"),
))
replica_log_group_name = Join(
"/",
[
"/aws/lambda",
Join(
".",
[
FindInMap(partition_config, Partition, "PrimaryRegion"),
Ref(edge_hook_function),
],
),
],
)
edge_hook_role_policy = template.add_resource(
PolicyType(
"EdgeHookRolePolicy",
PolicyName="write-logs",
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Action=[logs.CreateLogStream, logs.PutLogEvents],
Resource=[
Join(
":",
[
"arn",
Partition,
"logs",
"*",
AccountId,
"log-group",
replica_log_group_name,
"log-stream",
"*",
],
),
],
),
],
),
Roles=[Ref(edge_hook_role)],
))
stack_set_administration_role = template.add_resource(
Role(
"StackSetAdministrationRole",
AssumeRolePolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Principal=Principal("Service",
"cloudformation.amazonaws.com"),
Action=[sts.AssumeRole],
),
],
),
))
stack_set_execution_role = template.add_resource(
Role(
"StackSetExecutionRole",
AssumeRolePolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Principal=Principal(
"AWS", GetAtt(stack_set_administration_role,
"Arn")),
Action=[sts.AssumeRole],
),
],
),
Policies=[
PolicyProperty(
PolicyName="create-stackset-instances",
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Action=[
cloudformation.DescribeStacks,
logs.DescribeLogGroups,
],
Resource=["*"],
),
# stack instances communicate with the CFN service via SNS
Statement(
Effect=Allow,
Action=[sns.Publish],
NotResource=[
Join(
":",
[
"arn", Partition, "sns", "*",
AccountId, "*"
],
)
],
),
Statement(
Effect=Allow,
Action=[
logs.CreateLogGroup,
logs.DeleteLogGroup,
logs.PutRetentionPolicy,
logs.DeleteRetentionPolicy,
],
Resource=[
Join(
":",
[
"arn",
Partition,
"logs",
"*",
AccountId,
"log-group",
replica_log_group_name,
"log-stream",
"",
],
),
],
),
Statement(
Effect=Allow,
Action=[
cloudformation.CreateStack,
cloudformation.DeleteStack,
cloudformation.UpdateStack,
],
Resource=[
Join(
":",
[
"arn",
Partition,
"cloudformation",
"*",
AccountId,
Join(
"/",
[
"stack",
Join(
"-",
[
"StackSet",
StackName, "*"
],
),
],
),
],
)
],
),
],
),
),
],
))
stack_set_administration_role_policy = template.add_resource(
PolicyType(
"StackSetAdministrationRolePolicy",
PolicyName="assume-execution-role",
PolicyDocument=PolicyDocument(
Version="2012-10-17",
Statement=[
Statement(
Effect=Allow,
Action=[sts.AssumeRole],
Resource=[GetAtt(stack_set_execution_role, "Arn")],
),
],
),
Roles=[Ref(stack_set_administration_role)],
))
edge_log_groups = template.add_resource(
StackSet(
"EdgeLambdaLogGroupStackSet",
AdministrationRoleARN=GetAtt(stack_set_administration_role, "Arn"),
ExecutionRoleName=Ref(stack_set_execution_role),
StackSetName=Join("-", [StackName, "EdgeLambdaLogGroup"]),
PermissionModel="SELF_MANAGED",
Description="Multi-region log groups for Lambda@Edge replicas",
Parameters=[
StackSetParameter(
ParameterKey="LogGroupName",
ParameterValue=replica_log_group_name,
),
StackSetParameter(
ParameterKey="LogRetentionDays",
ParameterValue=Ref(log_retention_days),
),
],
OperationPreferences=OperationPreferences(
FailureToleranceCount=0,
MaxConcurrentPercentage=100,
),
StackInstancesGroup=[
StackInstances(
DeploymentTargets=DeploymentTargets(Accounts=[AccountId]),
Regions=FindInMap(partition_config, Partition,
"DefaultRegions"),
)
],
TemplateBody=create_log_group_template().to_json(indent=None),
DependsOn=[stack_set_administration_role_policy],
))
price_class_distribution = template.add_resource(
Distribution(
"PriceClassDistribution",
DistributionConfig=DistributionConfig(
Comment="Dummy distribution used for price class hack",
DefaultCacheBehavior=DefaultCacheBehavior(
TargetOriginId="default",
ViewerProtocolPolicy="allow-all",
ForwardedValues=ForwardedValues(QueryString=False),
),
Enabled=True,
Origins=[
Origin(Id="default",
DomainName=GetAtt(bucket, "DomainName"))
],
IPV6Enabled=True,
ViewerCertificate=ViewerCertificate(
CloudFrontDefaultCertificate=True),
PriceClass="PriceClass_All",
),
Condition=using_price_class_hack,
))
distribution = template.add_resource(
Distribution(
"ContentDistribution",
DistributionConfig=DistributionConfig(
Enabled=True,
Aliases=If(using_dns_names, Ref(dns_names), NoValue),
Logging=Logging(Bucket=GetAtt(log_bucket, "DomainName"),
Prefix="cloudfront/"),
DefaultRootObject="index.html",
Origins=[
Origin(
Id="default",
DomainName=GetAtt(bucket, "DomainName"),
S3OriginConfig=S3OriginConfig(
OriginAccessIdentity=Join(
"",
[
"origin-access-identity/cloudfront/",
Ref(origin_access_identity),
],
)),
)
],
DefaultCacheBehavior=DefaultCacheBehavior(
TargetOriginId="default",
Compress=True,
ForwardedValues=ForwardedValues(QueryString=False),
ViewerProtocolPolicy="redirect-to-https",
DefaultTTL=Ref(default_ttl_seconds),
LambdaFunctionAssociations=[
LambdaFunctionAssociation(
EventType="origin-request",
LambdaFunctionARN=Ref(edge_hook_version),
)
],
),
HttpVersion="http2",
IPV6Enabled=True,
ViewerCertificate=ViewerCertificate(
AcmCertificateArn=If(
using_acm_certificate,
Ref(acm_certificate_arn),
If(using_hosted_zone, Ref(certificate), NoValue),
),
SslSupportMethod=If(using_certificate, "sni-only",
NoValue),
CloudFrontDefaultCertificate=If(using_certificate, NoValue,
True),
MinimumProtocolVersion=Ref(tls_protocol_version),
),
PriceClass=If(using_price_class_hack, "PriceClass_100",
"PriceClass_All"),
),
DependsOn=[
bucket_policy,
log_ingester_policy,
edge_log_groups,
precondition_region_is_primary,
],
))
distribution_log_group = template.add_resource(
LogGroup(
"DistributionLogGroup",
LogGroupName=Join(
"", ["/aws/cloudfront/", Ref(distribution)]),
RetentionInDays=If(retention_defined, Ref(log_retention_days),
NoValue),
))
bucket_log_group = template.add_resource(
LogGroup(
"BucketLogGroup",
LogGroupName=Join("", ["/aws/s3/", Ref(bucket)]),
RetentionInDays=If(retention_defined, Ref(log_retention_days),
NoValue),
))
template.add_output(Output("DistributionId", Value=Ref(distribution)))
template.add_output(
Output("DistributionDomain", Value=GetAtt(distribution, "DomainName")))
template.add_output(
Output(
"DistributionDnsTarget",
Value=If(
using_price_class_hack,
GetAtt(price_class_distribution, "DomainName"),
GetAtt(distribution, "DomainName"),
),
))
template.add_output(
Output(
"DistributionUrl",
Value=Join("",
["https://",
GetAtt(distribution, "DomainName"), "/"]),
))
template.add_output(Output("ContentBucketArn", Value=GetAtt(bucket,
"Arn")))
return template
),
)
# Create an S3 bucket that holds statics and media. Default to private to prevent
# public list permissions, but still allow objects to be made publicly readable.
assets_bucket = template.add_resource(
Bucket(
"AssetsBucket",
AccessControl=Ref(assets_bucket_access_control),
BucketEncryption=If(
use_aes256_encryption_cond,
BucketEncryption(
ServerSideEncryptionConfiguration=[
ServerSideEncryptionRule(
ServerSideEncryptionByDefault=ServerSideEncryptionByDefault(
SSEAlgorithm='AES256'
)
)
]
),
NoValue
),
**common_bucket_conf,
)
)
# Output S3 asset bucket name
template.add_output(
Output(
"AssetsBucketDomainName",