API Gateway Lambdaプロキシ統合で渡されるリクエストを確認しました

2021/01/12 2021/01/12

API Gatewayの統合リクエストでLambdaを指定するときにプロキシ統合を使用すると、独自でマッピングテンプレートをする必要なく、クエリ文字列パラメータなどをいい具合に渡してくれます。

統合リクエストでLambda関数を選択して、[Lambdaプロキシ統合の使用]にチェックを入れました。

メソッドリクエストで、クエリ文字列パラメータを設定しました。

API Gatewayのテストを実行した結果です。

{
  "resource": "/memo",
  "path": "/memo",
  "httpMethod": "POST",
  "headers": None,
  "multiValueHeaders": None,
  "queryStringParameters": {
    "MemoId": "001",
    "Memo": "Hello"
  },
  "multiValueQueryStringParameters": {
    "MemoId": [
      "001"
    ],
    "Memo": [
      "Hello"
    ]
  },
  "pathParameters": None,
  "stageVariables": None,
  "requestContext": {
    "resourceId": "tyitdd",
    "resourcePath": "/memo",
    "httpMethod": "POST",
    "extendedRequestId": "YmjPqFZFIAMFtJQ=",
    "requestTime": "04/Jan/2021:02:36:32 +0000",
    "path": "/memo",
    "accountId": "123456789012",
    "protocol": "HTTP/1.1",
    "stage": "test-invoke-stage",
    "domainPrefix": "testPrefix",
    "requestTimeEpoch": 1609727792969,
    "requestId": "baaa7012-1af5-4bbf-84e2-e2855a964d0f",
    "identity": {
      "cognitoIdentityPoolId": None,
      "cognitoIdentityId": None,
      "apiKey": "test-invoke-api-key",
      "principalOrgId": None,
      "cognitoAuthenticationType": None,
      "userArn": "arn:aws:iam::123456789012:user/yamashita",
      "apiKeyId": "test-invoke-api-key-id",
      "userAgent": "aws-internal/3 aws-sdk-java/1.11.864 Linux/4.9.230-0.1.ac.223.84.332.metal1.x86_64 OpenJDK_64-Bit_Server_VM/25.262-b10 java/1.8.0_262 vendor/Oracle_Corporation",
      "accountId": "123456789012",
      "caller": "EXAMPLE",
      "sourceIp": "test-invoke-source-ip",
      "accessKey": "EXAMPLE",
      "cognitoAuthenticationProvider": None,
      "user": "EXAMPLE"
    },
    "domainName": "testPrefix.testDomainName",
    "apiId": "1ouchacnu1"
  },
  "body": None,
  "isBase64Encoded": False
}

{

"resource": "/memo",

"path": "/memo",

"httpMethod": "POST",

"headers": None,

"multiValueHeaders": None,

"queryStringParameters": {

"MemoId": "001",

"Memo": "Hello"

"multiValueQueryStringParameters": {

"MemoId": [

"001"

"Memo": [

"Hello"

]

"pathParameters": None,

"stageVariables": None,

"requestContext": {

"resourceId": "tyitdd",

"resourcePath": "/memo",

"httpMethod": "POST",

"extendedRequestId": "YmjPqFZFIAMFtJQ=",

"requestTime": "04/Jan/2021:02:36:32 +0000",

"path": "/memo",

"accountId": "123456789012",

"protocol": "HTTP/1.1",

"stage": "test-invoke-stage",

"domainPrefix": "testPrefix",

"requestTimeEpoch": 1609727792969,

"requestId": "baaa7012-1af5-4bbf-84e2-e2855a964d0f",

"identity": {

"cognitoIdentityPoolId": None,

"cognitoIdentityId": None,

"apiKey": "test-invoke-api-key",

"principalOrgId": None,

"cognitoAuthenticationType": None,

"userArn": "arn:aws:iam::123456789012:user/yamashita",

"apiKeyId": "test-invoke-api-key-id",

"userAgent": "aws-internal/3 aws-sdk-java/1.11.864 Linux/4.9.230-0.1.ac.223.84.332.metal1.x86_64 OpenJDK_64-Bit_Server_VM/25.262-b10 java/1.8.0_262 vendor/Oracle_Corporation",

"accountId": "123456789012",

"caller": "EXAMPLE",

"sourceIp": "test-invoke-source-ip",

"accessKey": "EXAMPLE",

"cognitoAuthenticationProvider": None,

"user": "EXAMPLE"

"domainName": "testPrefix.testDomainName",

"apiId": "1ouchacnu1"

"body": None,

"isBase64Encoded": False

}

Lambdaでevent[‘queryStringParameters’]をそのまま使えばいいので楽ちんですね。