验证s3文件夹中的所有cloudformation文件

Question

CloudFormation validate支持在s3中验证CloudFormation模板。
如何验证s3位置中的所有文件。这些文件位于文件夹中。

Answer 1

您可以使用下面的python脚本来验证s3 bucket/文件夹中的所有云信息模板
下面的脚本生成s3文件夹中所有文件的Object Url/Public Url，然后将url传递给validate_file函数

import boto3
s3_uri="s3://BUCKET_NAME/FOLDER_1/FOLDER2/" # S3 URI of the folder you want to recursively scan, Replace this with your own S3 URI
# Split the s3 uri to extract bucket name and the file prefix
# Splitting S# 3 URI will generate an array
# Combine the appropirate elements of the array to extraxt BUCKET_NAME and PREFIX
arr=s3_uri.split('/')
bucket =arr[2]
prefix=""
for i in range(3,len(arr)-1):
prefix=prefix+arr[i]+"/"

s3_client = boto3.client("s3")

def validate_file(object_url): # function to validate cloudformation template
cloudformation_client = boto3.client('cloudformation')

response = cloudformation_client.validate_template(
TemplateURL=object_url
)
print(response) # print the response

def get_all_s3_files(bucket,prefix,s3_client): # generate object url of all files in the folder and pass it to validate function
response = s3_client.list_objects_v2(Bucket=bucket,  Prefix=prefix) # Featch Meta-data of all the files in the folder
files = response.get("Contents")
for file in files: # Iterate through each files
file_path=file['Key']
object_url="https://"+bucket+".s3.amazonaws.com/"+file_path #create Object URL  Manually
print("Object Url =  "+object_url)
if object_url.endswith(".yml"):
validate_file(object_url=object_url) # validate all files
get_all_s3_files(bucket=bucket,prefix=prefix,s3_client=s3_client)