forked from aws-powertools/powertools-lambda-python
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcanary_stack.py
More file actions
176 lines (154 loc) · 5 KB
/
canary_stack.py
File metadata and controls
176 lines (154 loc) · 5 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
import uuid
import jsii
from aws_cdk import (
Aspects,
CfnCondition,
CfnParameter,
CfnResource,
CustomResource,
Duration,
Fn,
IAspect,
Stack,
)
from aws_cdk.aws_iam import (
Effect,
ManagedPolicy,
PolicyStatement,
Role,
ServicePrincipal,
)
from aws_cdk.aws_lambda import Architecture, Code, Function, LayerVersion, Runtime
from aws_cdk.aws_logs import RetentionDays
from aws_cdk.aws_ssm import StringParameter
from aws_cdk.custom_resources import Provider
from constructs import Construct
VERSION_TRACKING_EVENT_BUS_ARN: str = (
"arn:aws:events:eu-central-1:027876851704:event-bus/VersionTrackingEventBus"
)
@jsii.implements(IAspect)
class ApplyCondition:
def __init__(self, condition: CfnCondition):
self.condition = condition
def visit(self, node):
if isinstance(node, CfnResource):
node.cfn_options.condition = self.condition
class CanaryStack(Stack):
def __init__(
self,
scope: Construct,
construct_id: str,
powertools_version: str,
ssm_paramter_layer_arn: str,
ssm_parameter_layer_arm64_arn: str,
**kwargs,
) -> None:
super().__init__(scope, construct_id, **kwargs)
deploy_stage = CfnParameter(
self, "DeployStage", description="Deployment stage for canary"
).value_as_string
has_arm64_support = CfnParameter(
self,
"HasARM64Support",
description="Has ARM64 Support Condition",
type="String",
allowed_values=["true", "false"],
)
has_arm64_condition = CfnCondition(
self,
"HasARM64SupportCondition",
expression=Fn.condition_equals(has_arm64_support, "true"),
)
layer_arn = StringParameter.from_string_parameter_attributes(
self, "LayerVersionArnParam", parameter_name=ssm_paramter_layer_arn
).string_value
Canary(
self,
"Canary-x86-64",
layer_arn=layer_arn,
powertools_version=powertools_version,
architecture=Architecture.X86_64,
stage=deploy_stage,
)
layer_arm64_arn = StringParameter.from_string_parameter_attributes(
self,
"LayerArm64VersionArnParam",
parameter_name=ssm_parameter_layer_arm64_arn,
).string_value
arm64_canary = Canary(
self,
"Canary-arm64",
layer_arn=layer_arm64_arn,
powertools_version=powertools_version,
architecture=Architecture.ARM_64,
stage=deploy_stage,
)
Aspects.of(arm64_canary).add(ApplyCondition(has_arm64_condition))
class Canary(Construct):
def __init__(
self,
scope: Construct,
construct_id: str,
layer_arn: str,
powertools_version: str,
architecture: Architecture,
stage: str,
):
super().__init__(scope, construct_id)
layer = LayerVersion.from_layer_version_arn(
self, "PowertoolsLayer", layer_version_arn=layer_arn
)
execution_role = Role(
self,
"LambdaExecutionRole",
assumed_by=ServicePrincipal("lambda.amazonaws.com"),
)
execution_role.add_managed_policy(
ManagedPolicy.from_aws_managed_policy_name(
"service-role/AWSLambdaBasicExecutionRole"
)
)
execution_role.add_to_policy(
PolicyStatement(
effect=Effect.ALLOW, actions=["lambda:GetFunction"], resources=["*"]
)
)
canary_lambda = Function(
self,
"CanaryLambdaFunction",
code=Code.from_asset("layer/canary"),
handler="app.on_event",
layers=[layer],
memory_size=512,
timeout=Duration.seconds(10),
runtime=Runtime.PYTHON_3_9,
architecture=architecture,
log_retention=RetentionDays.ONE_MONTH,
role=execution_role,
environment={
"POWERTOOLS_VERSION": powertools_version,
"POWERTOOLS_LAYER_ARN": layer_arn,
"VERSION_TRACKING_EVENT_BUS_ARN": VERSION_TRACKING_EVENT_BUS_ARN,
"LAYER_PIPELINE_STAGE": stage,
},
)
canary_lambda.add_to_role_policy(
PolicyStatement(
effect=Effect.ALLOW,
actions=["events:PutEvents"],
resources=[VERSION_TRACKING_EVENT_BUS_ARN],
)
)
# custom resource provider configuration
provider = Provider(
self,
"CanaryCustomResource",
on_event_handler=canary_lambda,
log_retention=RetentionDays.ONE_MONTH,
)
# force to recreate resource on each deployment with randomized name
CustomResource(
self,
f"CanaryTrigger-{str(uuid.uuid4())[0:7]}",
service_token=provider.service_token,
)