如何将HTTP API或REST API与Lambda（不更新的能力）提供给HTTP API或REST API？
因此，我具有以下代码的lambda功能，该代码由API触发（AWS API网关）。
import json
def lambda_handler(event, context):
testString = "foo"
if "f" in testString:
return {
"statusCode": 200,
"body": json.dumps(testString)
}
我用HTTP API和REST API对其进行了测试。由于条件返回true，在这两种情况下，输出都是“ foo”。但是，如果testString突然更改为“ Goo”，并且条件返回false，会发生什么？我希望输出保持原样（未更新），因此它仍然是“ foo”。但是发生这种情况时，HTTP API输出null，而REST API输出{“ message”：“ Internal Server Error”}。
也许我只需要在下面的代码中弄清楚缺少的作品：
import json
def lambda_handler(event, context):
testString = "goo"
if "f" in testString:
return {
"statusCode": 200,
"body": json.dumps(testString)
}
else:
#missing piece: make output not change
这可能是第一次，我尝试了“创建” APIS TBH。我想念什么？
So I have a Lambda Function with the code below, which is triggered by an API (AWS API Gateway).
import json
def lambda_handler(event, context):
testString = "foo"
if "f" in testString:
return {
"statusCode": 200,
"body": json.dumps(testString)
}
I tested it with both a HTTP API and a REST API. Because the condition returns True, in both cases the output is "foo" as it should be. But what happens if testString suddenly changes to "goo", and the condition returns False? I would like the output to remain as it previously was (not update), so it remains "foo". But when this happens, the HTTP API outputs null, and the REST API outputs {"message": "Internal server error"}.
Maybe I just need to figure out the missing piece in the code below:
import json
def lambda_handler(event, context):
testString = "goo"
if "f" in testString:
return {
"statusCode": 200,
"body": json.dumps(testString)
}
else:
#missing piece: make output not change
This is probably the first time, I have tried "creating" APIs tbh. What am I missing?
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您不能仅使用lambda函数来完成此操作。您必须存储以前的输出外部，例如
dynamodb。然后，您的功能将始终能够查找最后一个正确的结果，然后将其返回，而不是随机错误消息或不正确的答案。You can't do this with just only a lambda function. You have to store your previous outputs externally, e.g. in a
DynamoDB. Then your function will always be able to look up the last correct result and return it instead some random error message or incorrect answer.