Sample

该文件名称默认是lambda_function.py
需要在Runtime settings指定handler：lambda_function.lambda_handler。
当然，文件名和函数名都可以改，只要在文件和handler中分别改成对应的即可。

  1. import json
  3. print('Loading function')
  6. def lambda_handler(event, context):
  7.     #print("Received event: " + json.dumps(event, indent=2))
  8.     print("value1 = " + event['key1'])
  9.     print("value2 = " + event['key2'])
  10.     print("value3 = " + event['key3'])
  11.     return event['key1']  # Echo back the first key value
  12.     #raise Exception('Something went wrong')

Lambda与S3协作

  1. npm install --arch=x64 --platform=linux --target=12.13.0  sharp
  3. aws lambda create-function --function-name ShayneCreateThumbnail2 \
  4. --zip-file fileb://function.zip --handler index.handler --runtime nodejs12.x \
  5. --timeout 10 --memory-size 1024 \
  6. --role arn:aws:iam::875593617141:role/shayne-lambda-s3-role
  9. aws lambda invoke --function-name ShayneCreateThumbnail2 --invocation-type Event \
  10. --cli-binary-format raw-in-base64-out \
  11. --payload file://inputFile.txt outputfile.txt
  13. aws lambda add-permission --function-name ShayneCreateThumbnail2 --principal s3.amazonaws.com \
  14. --statement-id s3invoke --action "lambda:InvokeFunction" \
  15. --source-arn arn:aws:s3:::shayne-chen \
  17. aws lambda get-policy --function-name ShayneCreateThumbnail2

inputFile.txt

  1. {
  2.   "Records":[
  3.     {
  4.       "eventVersion":"2.0",
  5.       "eventSource":"aws:s3",
  6.       "awsRegion":"us-east-1",
  7.       "eventTime":"1970-01-01T00:00:00.000Z",
  8.       "eventName":"ObjectCreated:Put",
  9.       "userIdentity":{
  10.         "principalId":"AIDAJDPLRKLG7UEXAMPLE"
  11.       },
  12.       "requestParameters":{
  13.         "sourceIPAddress":"127.0.0.1"
  14.       },
  15.       "responseElements":{
  16.         "x-amz-request-id":"C3D13FE58DE4C810",
  17.         "x-amz-id-2":"FMyUVURIY8/IgAtTv8xRjskZQpcIZ9KG4V5Wp6S7S/JRWeUWerMUE5JgHvANOjpD"
  18.       },
  19.       "s3":{
  20.         "s3SchemaVersion":"1.0",
  21.         "configurationId":"testConfigRule",
  22.         "bucket":{
  23.           "name":"shayne-chen",
  24.           "ownerIdentity":{
  25.             "principalId":"A3NL1KOZZKExample"
  26.           },
  27.           "arn":"arn:aws:s3:::shayne-chen"
  28.         },
  29.         "object":{
  30.           "key":"HappyFace.jpg",
  31.           "size":512.6,
  32.           "eTag":"3ed51f5b77ff256b51c23fd7b955f234",
  33.           "versionId":"zlN9Lv7Klg50g_7FmF6juEkooE3UHx6p"
  34.         }
  35.       }
  36.     }
  37.   ]
  38. }