[英]Unable to invoke second lambda within VPC - Python AWS Lamba Function
[英]AWS - Lambda unable to invoke another lambda through Python SDK
I am trying to invoke a lambda function from another lambda using python SDK. lambda 兩個函數屬於同一個 VPC。 觸發器 lambda 僅包含調用第二個 lambda (loader_development) 的 python 腳本。 loader_development lambda 的 APIGateway 是私有的,它配置了一個資源策略,拒絕訪問不屬於該特定 VPC 的所有 IP 地址。
我在觸發器 lambda 中的 Python 腳本是:
from __future__ import print_function
import json
import logging
import os
from urllib2 import urlopen,Request,HTTPError
import boto3
logger = logging.getLogger()
logger.setLevel(logging.INFO)
region = os.environ['AWS_REGION']
def lambda_handler(event, context):
invokeLambda = boto3.client('lambda', region_name = 'us-east-1')
request = {'resource':'/bucketstatus/latest','path':'/bucketstatus/latest','httpMethod':'GET'}
invoke_response = invokeLambda.invoke(FunctionName='loader_development',
InvocationType='RequestResponse',
Payload=json.dumps(request))
print(invoke_response['Payload'].read())
logger.info('Process Complete')
所以/bucketstatus/latest
是一個GET
請求,這個端點駐留在 loader_development lambda 的 APIGateway(它是私有的)中。 The loader_development lambda is a spring boot application whereas the trigger lambda is a standalone lambda that only has a python script to invoke an endpoint of the loader_development lambda to get the response.
在測試此腳本時,它會給出狀態 500 和內部服務器錯誤。 錯誤:
2019-10-09 10:09:09.279 ERROR 1 --- [ main] c.a.s.proxy.AwsProxyExceptionHandler : Called exception handler for:
com.amazonaws.serverless.exceptions.InvalidRequestEventException: The incoming event is not a valid request from Amazon API Gateway or an Application Load Balancer
10:09:09 at com.amazonaws.serverless.proxy.internal.servlet.AwsProxyHttpServletRequestReader.readRequest(AwsProxyHttpServletRequestReader.java:41)
10:09:09 at com.amazonaws.serverless.proxy.internal.servlet.AwsProxyHttpServletRequestReader.readRequest(AwsProxyHttpServletRequestReader.java:28)
10:09:09 at com.amazonaws.serverless.proxy.internal.LambdaContainerHandler.proxy(LambdaContainerHandler.java:174)
10:09:09 at com.amazonaws.serverless.proxy.internal.LambdaContainerHandler.proxyStream(LambdaContainerHandler.java:209)
10:09:09 at com.trimble.roadrunner.StreamLambdaHandler.handleRequest(StreamLambdaHandler.java:49)
10:09:09 at lambdainternal.EventHandlerLoader$2.call(EventHandlerLoader.java:888)
10:09:09 at lambdainternal.AWSLambda.startRuntime(AWSLambda.java:293)
10:09:09 at lambdainternal.AWSLambda.<clinit>(AWSLambda.java:64)
10:09:09 at java.lang.Class.forName0(Native Method)
10:09:09 at java.lang.Class.forName(Class.java:348)
10:09:09 at lambdainternal.LambdaRTEntry.main(LambdaRTEntry.java:114)
奇怪的是,當我嘗試調用其他一些 lambda(微服務)時,請求得到處理,我得到狀態 200。示例 lambda 也在 VPC 內,並具有私有 APIGateway。
我真的不確定我錯過了什么。 任何幫助將不勝感激!
W.R.T. GitHub 解決方案,我收到此異常,因為我沒有在請求 object 中包含requestContext
屬性。 所以我將我的請求 object 修改為:
request = {'resource': '/bucketstatus/latest', 'path': '/bucketstatus/latest', 'httpMethod': 'GET',
'requestContext':{'accountId':'821665253511',
'resourceId': '',
'stage': 'development',
'requestId': context.aws_request_id,
'identity': {
'cognitoIdentityPoolId': None,
'accountId': None,
'cognitoIdentityId': None,
'caller': None,
'apiKey': None,
'sourceIp': '',
'cognitoAuthenticationType': None,
'cognitoAuthenticationProvider': None,
"userArn":context.invoked_function_arn
}
},
"apiId": "No need"
}
在此更改后,我能夠獲得狀態代碼為 200 的正確響應。
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