トークン生成前の Lambda トリガー

トークン生成前の Lambda トリガーでアクセストークンのカスタマイズをサポートするには

CreateUserPool または UpdateUserPool API リクエストを生成します。デフォルト値に設定しないすべてのパラメータには、値を指定する必要があります。詳細については、「ユーザープールとアプリケーションクライアントの設定更新」を参照してください。

リクエストの LambdaVersion パラメータに以下の内容を含めます。LambdaVersion の値が V2_0 である場合、ユーザープールはアクセストークンをカスタマイズするためのパラメータを追加します。特定の関数バージョンを呼び出すには、関数バージョンを LambdaArn の値とする Lambda 関数 ARN を使用します。

"PreTokenGenerationConfig": { 
   "LambdaArn": "arn:aws:lambda:us-west-2:123456789012:function:MyFunction",
   "LambdaVersion": "V2_0"
},

バージョン 1 トークンは、ID トークンでグループメンバーシップ、IAM ロール、新しいクレームを設定できます。グループメンバーシップの上書きは、アクセストークンの cognito:groupsクレームにも適用されます。

{
    "request": {
        "userAttributes": {"string": "string"},
        "groupConfiguration": {
                "groupsToOverride": [
                    "string",
                    "string"
                ],
                "iamRolesToOverride": [
                    "string",
                    "string"
                ],
                "preferredRole": "string"
        },
        "clientMetadata": {"string": "string"}
    },
    "response": {
        "claimsOverrideDetails": {
            "claimsToAddOrOverride": {"string": "string"},
            "claimsToSuppress": [
                "string",
                "string"
            ],
            "groupOverrideDetails": {
                "groupsToOverride": [
                    "string",
                    "string"
                ],
                "iamRolesToOverride": [
                    "string",
                    "string"
                ],
                "preferredRole": "string"
            }
        }
    }
}

バージョン 2 リクエストイベントでは、アクセストークンをカスタマイズするフィールドが追加されます。また、レスポンスオブジェクト内の複雑な claimsToOverride データタイプのサポートも追加されます。Lambda 関数は、次のタイプのデータを claimsToOverride の値で返すことができます。

{
    "request": {
        "userAttributes": {
            "string": "string"
        },
        "scopes": ["string", "string"],
        "groupConfiguration": {
            "groupsToOverride": ["string", "string"],
            "iamRolesToOverride": ["string", "string"],
            "preferredRole": "string"
        },
        "clientMetadata": {
            "string": "string"
        }
    },
    "response": {
        "claimsAndScopeOverrideDetails": {
            "idTokenGeneration": {
                "claimsToAddOrOverride": {
                    "string": [accepted datatype]
                },
                "claimsToSuppress": ["string", "string"]
            },
            "accessTokenGeneration": {
                "claimsToAddOrOverride": {
                    "string": [accepted datatype]
                },
                "claimsToSuppress": ["string", "string"],
                "scopesToAdd": ["string", "string"],
                "scopesToSuppress": ["string", "string"]
            },
            "groupOverrideDetails": {
                "groupsToOverride": ["string", "string"],
                "iamRolesToOverride": ["string", "string"],
                "preferredRole": "string"
            }
        }
    }
}

export const handler = function(event, context) {
  event.response = {
    "claimsAndScopeOverrideDetails": {
      "idTokenGeneration": {
        "claimsToAddOrOverride": {
          "family_name": "Doe"
    },
        "claimsToSuppress": [
          "email",
          "phone_number"
    ]
      },
      "accessTokenGeneration": {
        "scopesToAdd": [
          "openid",
          "email",
          "solar-system-data/asteroids.add"
        ],
        "scopesToSuppress": [
          "phone_number",
          "aws.cognito.signin.user.admin"
        ]
      },
      "groupOverrideDetails": {
        "groupsToOverride": [
		  "new-group-A",
		  "new-group-B",
		  "new-group-C"
		],
        "iamRolesToOverride": [
          "arn:aws:iam::123456789012:role/new_roleA",
          "arn:aws:iam::123456789012:role/new_roleB",
          "arn:aws:iam::123456789012:role/new_roleC"
        ],
        "preferredRole": "arn:aws:iam::123456789012:role/new_role",
      }
    }
  };
  // Return to Amazon Cognito
  context.done(null, event);
};

{
    "version": "2",
    "triggerSource": "TokenGeneration_Authentication",
    "region": "us-east-1",
    "userPoolId": "us-east-1_EXAMPLE",
    "userName": "JaneDoe",
    "callerContext": {
        "awsSdkVersion": "aws-sdk-unknown-unknown",
        "clientId": "1example23456789"
    },
    "request": {
        "userAttributes": {
            "sub": "a1b2c3d4-5678-90ab-cdef-EXAMPLE11111",
            "cognito:user_status": "CONFIRMED",
            "email_verified": "true",
            "phone_number_verified": "true",
            "phone_number": "+12065551212",
            "family_name": "Zoe",
            "email": "Jane.Doe@example.com"
        },
        "groupConfiguration": {
            "groupsToOverride": ["group-1", "group-2", "group-3"],
            "iamRolesToOverride": ["arn:aws:iam::123456789012:role/sns_caller1", "arn:aws:iam::123456789012:role/sns_caller2", "arn:aws:iam::123456789012:role/sns_caller3"],
            "preferredRole": ["arn:aws:iam::123456789012:role/sns_caller"]
        },
        "scopes": [
            "aws.cognito.signin.user.admin", "openid", "email", "phone"
        ]
    },
    "response": {
        "claimsAndScopeOverrideDetails": []
    }
}

export const handler = function(event, context) {

    var scopes = ["MyAPI.read", "MyAPI.write", "MyAPI.admin"]
    var claims = {}
    claims["aud"]= event.callerContext.clientId;
    claims["booleanTest"] = false;
    claims["longTest"] = 9223372036854775807;
    claims["exponentTest"] = 1.7976931348623157E308;
    claims["ArrayTest"] = ["test", 9223372036854775807, 1.7976931348623157E308, true];
    claims["longStringTest"] = "\{\
        \"first_json_block\": \{\
            \"key_A\": \"value_A\",\
            \"key_B\": \"value_B\"\
        \},\
        \"second_json_block\": \{\
            \"key_C\": \{\
                \"subkey_D\": [\
                    \"value_D\",\
                    \"value_E\"\
                ],\
                \"subkey_F\": \"value_F\"\
            \},\
            \"key_G\": \"value_G\"\
        \}\
    \}";
    claims["jsonTest"] = {
    	"first_json_block": {
    		"key_A": "value_A",
    		"key_B": "value_B"
    	},
    	"second_json_block": {
    		"key_C": {
    			"subkey_D": [
    				"value_D",
    				"value_E"
    			],
    			"subkey_F": "value_F"
    		},
    		"key_G": "value_G"
    	}
    };
    event.response = {
        "claimsAndScopeOverrideDetails": {
            "idTokenGeneration": {
                "claimsToAddOrOverride": claims,
                "claimsToSuppress": ["email"]
            },
            "accessTokenGeneration": {
                "claimsToAddOrOverride": claims,
                "claimsToSuppress": ["email"],
                "scopesToAdd": scopes,
                "scopesToSuppress": ["aws.cognito.signin.user.admin"]
            }
        }
    };
    console.info("EVENT response\n" + JSON.stringify(event, (_, v) => typeof v === 'bigint' ? v.toString() : v, 2))
    console.info("EVENT response size\n" + JSON.stringify(event, (_, v) => typeof v === 'bigint' ? v.toString() : v).length)
    // Return to Amazon Cognito
    context.done(null, event);
};

{
    "version": "2",
    "triggerSource": "TokenGeneration_HostedAuth",
    "region": "us-west-2",
    "userPoolId": "us-west-2_EXAMPLE",
    "userName": "JaneDoe",
    "callerContext": {
        "awsSdkVersion": "aws-sdk-unknown-unknown",
        "clientId": "1example23456789"
    },
    "request": {
        "userAttributes": {
            "sub": "a1b2c3d4-5678-90ab-cdef-EXAMPLE11111",
            "cognito:user_status": "CONFIRMED"
            "email_verified": "true",
            "phone_number_verified": "true",
            "phone_number": "+12065551212",
            "email": "Jane.Doe@example.com"
        },
        "groupConfiguration": {
            "groupsToOverride": ["group-1", "group-2", "group-3"],
            "iamRolesToOverride": ["arn:aws:iam::123456789012:role/sns_caller1"],
            "preferredRole": ["arn:aws:iam::123456789012:role/sns_caller1"]
        },
        "scopes": [
            "aws.cognito.signin.user.admin",
            "phone",
            "openid",
            "profile",
            "email"
        ]
    },
    "response": {
        "claimsAndScopeOverrideDetails": []
    }
}

const handler = async (event) => {
  event.response = {
    claimsOverrideDetails: {
      claimsToAddOrOverride: {
        my_first_attribute: "first_value",
        my_second_attribute: "second_value",
      },
      claimsToSuppress: ["email"],
    },
  };

  return event;
};

export { handler };

{
  "request": {},
  "response": {}
}

const handler = async (event) => {
  event.response = {
    claimsOverrideDetails: {
      groupOverrideDetails: {
        groupsToOverride: ["group-A", "group-B", "group-C"],
        iamRolesToOverride: [
          "arn:aws:iam::XXXXXXXXXXXX:role/sns_callerA",
          "arn:aws:iam::XXXXXXXXX:role/sns_callerB",
          "arn:aws:iam::XXXXXXXXXX:role/sns_callerC",
        ],
        preferredRole: "arn:aws:iam::XXXXXXXXXXX:role/sns_caller",
      },
    },
  };

  return event;
};

export { handler };

{
  "request": {},
  "response": {}
}