Hi i need get an item from dynamodb through api gateway and i configure the resources like this:
i configure the integration method like the next picture:
and the mapping template is like this:
but when i test apigateway launch this error
Execution failed due to configuration error:
No match for output mapping and no default output mapping configured.
Endpoint Response Status Code: 200
Gateway response type: API_CONFIGURATION_ERROR with status code: 500
I followed these two tutorials and performed get on my dynamoDB table.
My table has primary key name "pk". Tutorials: Video & Blog
{
"TableName": "apiG",
"Key": {
"pk": {
"S": "key1"
}
}
}
But if I form my request like
{
"TableName": "apiG",
"PrimaryKey": "pk",
"KeyConditionExpression": "pk = :v1",
"ExpressionAttributeValues": {
":v1": {
"S": "key1"
}
}
}
I get the desired response from dynamoDB.
This will make sure your DynamoDB output is sent without modification to your browser/output.
#set($inputRoot = $input.path('$'))
{
"content": [
#foreach($elem in $inputRoot.Items) {
"key": "$elem.pk.S",
"value": "$elem.pv.S"
}#if($foreach.hasNext),#end
#end
]
}
and it produced following output.
{
"content": [
{
"key": "key1",
"value": "val1"
}
]
}
P.S. i had a dynamo table named 'apiG' with primaryKey 'pk' and following the exported swagger from my experiment. Hope it helps.
openapi: "3.0.1"
info:
title: "dynamoProxy"
version: "2020-05-01T06:45:38Z"
servers:
- url: "https://aaaaaaaaaa.execute-api.us-east-2.amazonaws.com/{basePath}"
variables:
basePath:
default: "/test"
paths:
/db:
get:
responses:
200:
description: "200 response"
content:
application/json:
schema:
$ref: "#/components/schemas/Empty"
x-amazon-apigateway-integration:
credentials: "arn:aws:iam::111111111111:role/apiGddbRole"
uri: "arn:aws:apigateway:us-east-2:dynamodb:action/Query"
responses:
default:
statusCode: "200"
responseTemplates:
application/json: "#set($inputRoot = $input.path('$'))\n{\n \"content\"\
: [\n #foreach($elem in $inputRoot.Items) {\n \"\
key\": \"$elem.pk.S\",\n \"value\": \"$elem.pv.S\"\n \
\ }#if($foreach.hasNext),#end\n\t#end\n ]\n}"
passthroughBehavior: "when_no_templates"
httpMethod: "POST"
requestTemplates:
application/json: "{\n \"TableName\": \"apiG\",\n \"PrimaryKey\":\
\ \"pk\",\n \"KeyConditionExpression\": \"pk = :v1\",\n \"ExpressionAttributeValues\"\
: {\n \":v1\": {\n \"S\": \"key1\"\n }\n }\n\
}"
type: "aws"
components:
schemas:
Empty:
title: "Empty Schema"
type: "object"
Cheers!
