# Simple calculator API OpenAPI definition


The following is the OpenAPI definition of the simple calculator API. You can import it into your account. However, you need to reset the resource-based permissions on the [Lambda function](simple-calc-nodejs-lambda-function.md) after the import. To do so, re-select the Lambda function that you created in your account from the **Integration Request** in the API Gateway console. This will cause the API Gateway console to reset the required permissions. Alternatively, you can use AWS Command Line Interface for Lambda command of [add-permission](https://docs.aws.amazon.com/cli/latest/reference/lambda/add-permission.html).

------
#### [ OpenAPI 2.0 ]

```
{
  "swagger": "2.0",
  "info": {
    "version": "2016-09-29T20:27:30Z",
    "title": "SimpleCalc"
  },
  "host": "t6dve4zn25.execute-api.us-west-2.amazonaws.com",
  "basePath": "/demo",
  "schemes": [
    "https"
  ],
  "paths": {
    "/": {
      "get": {
        "consumes": [
          "application/json"
        ],
        "produces": [
          "application/json"
        ],
        "parameters": [
          {
            "name": "op",
            "in": "query",
            "required": false,
            "type": "string"
          },
          {
            "name": "a",
            "in": "query",
            "required": false,
            "type": "string"
          },
          {
            "name": "b",
            "in": "query",
            "required": false,
            "type": "string"
          }
        ],
        "responses": {
          "200": {
            "description": "200 response",
            "schema": {
              "$ref": "#/definitions/Result"
            }
          }
        },
        "x-amazon-apigateway-integration": {
          "requestTemplates": {
            "application/json": "#set($inputRoot = $input.path('$'))\n{\n  \"a\" : $input.params('a'),\n  \"b\" : $input.params('b'),\n  \"op\" : \"$input.params('op')\"\n}"
          },
          "uri": "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:123456789012:function:Calc/invocations",
          "passthroughBehavior": "when_no_templates",
          "httpMethod": "POST",
          "responses": {
            "default": {
              "statusCode": "200",
              "responseTemplates": {
                "application/json": "#set($inputRoot = $input.path('$'))\n{\n  \"input\" : {\n    \"a\" : $inputRoot.a,\n    \"b\" : $inputRoot.b,\n    \"op\" : \"$inputRoot.op\"\n  },\n  \"output\" : {\n    \"c\" : $inputRoot.c\n  }\n}"
              }
            }
          },
          "type": "aws"
        }
      },
      "post": {
        "consumes": [
          "application/json"
        ],
        "produces": [
          "application/json"
        ],
        "parameters": [
          {
            "in": "body",
            "name": "Input",
            "required": true,
            "schema": {
              "$ref": "#/definitions/Input"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "200 response",
            "schema": {
              "$ref": "#/definitions/Result"
            }
          }
        },
        "x-amazon-apigateway-integration": {
          "uri": "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:123456789012:function:Calc/invocations",
          "passthroughBehavior": "when_no_match",
          "httpMethod": "POST",
          "responses": {
            "default": {
              "statusCode": "200",
              "responseTemplates": {
                "application/json": "#set($inputRoot = $input.path('$'))\n{\n  \"input\" : {\n    \"a\" : $inputRoot.a,\n    \"b\" : $inputRoot.b,\n    \"op\" : \"$inputRoot.op\"\n  },\n  \"output\" : {\n    \"c\" : $inputRoot.c\n  }\n}"
              }
            }
          },
          "type": "aws"
        }
      }
    },
    "/{a}": {
      "x-amazon-apigateway-any-method": {
        "consumes": [
          "application/json"
        ],
        "produces": [
          "application/json"
        ],
        "parameters": [
          {
            "name": "a",
            "in": "path",
            "required": true,
            "type": "string"
          }
        ],
        "responses": {
          "404": {
            "description": "404 response"
          }
        },
        "x-amazon-apigateway-integration": {
          "requestTemplates": {
            "application/json": "{\"statusCode\": 200}"
          },
          "passthroughBehavior": "when_no_match",
          "responses": {
            "default": {
              "statusCode": "404",
              "responseTemplates": {
                "application/json": "{ \"Message\" : \"Can't $context.httpMethod $context.resourcePath\" }"
              }
            }
          },
          "type": "mock"
        }
      }
    },
    "/{a}/{b}": {
      "x-amazon-apigateway-any-method": {
        "consumes": [
          "application/json"
        ],
        "produces": [
          "application/json"
        ],
        "parameters": [
          {
            "name": "a",
            "in": "path",
            "required": true,
            "type": "string"
          },
          {
            "name": "b",
            "in": "path",
            "required": true,
            "type": "string"
          }
        ],
        "responses": {
          "404": {
            "description": "404 response"
          }
        },
        "x-amazon-apigateway-integration": {
          "requestTemplates": {
            "application/json": "{\"statusCode\": 200}"
          },
          "passthroughBehavior": "when_no_match",
          "responses": {
            "default": {
              "statusCode": "404",
              "responseTemplates": {
                "application/json": "{ \"Message\" : \"Can't $context.httpMethod $context.resourcePath\" }"
              }
            }
          },
          "type": "mock"
        }
      }
    },
    "/{a}/{b}/{op}": {
      "get": {
        "consumes": [
          "application/json"
        ],
        "produces": [
          "application/json"
        ],
        "parameters": [
          {
            "name": "a",
            "in": "path",
            "required": true,
            "type": "string"
          },
          {
            "name": "b",
            "in": "path",
            "required": true,
            "type": "string"
          },
          {
            "name": "op",
            "in": "path",
            "required": true,
            "type": "string"
          }
        ],
        "responses": {
          "200": {
            "description": "200 response",
            "schema": {
              "$ref": "#/definitions/Result"
            }
          }
        },
        "x-amazon-apigateway-integration": {
          "requestTemplates": {
            "application/json": "#set($inputRoot = $input.path('$'))\n{\n  \"a\" : $input.params('a'),\n  \"b\" : $input.params('b'),\n  \"op\" : \"$input.params('op')\"\n}"
          },
          "uri": "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:123456789012:function:Calc/invocations",
          "passthroughBehavior": "when_no_templates",
          "httpMethod": "POST",
          "responses": {
            "default": {
              "statusCode": "200",
              "responseTemplates": {
                "application/json": "#set($inputRoot = $input.path('$'))\n{\n  \"input\" : {\n    \"a\" : $inputRoot.a,\n    \"b\" : $inputRoot.b,\n    \"op\" : \"$inputRoot.op\"\n  },\n  \"output\" : {\n    \"c\" : $inputRoot.c\n  }\n}"
              }
            }
          },
          "type": "aws"
        }
      }
    }
  },
  "definitions": {
    "Input": {
      "type": "object",
      "properties": {
        "a": {
          "type": "number"
        },
        "b": {
          "type": "number"
        },
        "op": {
          "type": "string"
        }
      },
      "title": "Input"
    },
    "Output": {
      "type": "object",
      "properties": {
        "c": {
          "type": "number"
        }
      },
      "title": "Output"
    },
    "Result": {
      "type": "object",
      "properties": {
        "input": {
          "$ref": "#/definitions/Input"
        },
        "output": {
          "$ref": "#/definitions/Output"
        }
      },
      "title": "Result"
    }
  }
}
```

------
#### [ OpenAPI 3.0 ]

```
{
  "openapi" : "3.0.1",
  "info" : {
    "title" : "SimpleCalc",
    "version" : "2016-09-29T20:27:30Z"
  },
  "servers" : [ {
    "url" : "https://t6dve4zn25.execute-api.us-west-2.amazonaws.com/{basePath}",
    "variables" : {
      "basePath" : {
        "default" : "demo"
      }
    }
  } ],
  "paths" : {
    "/{a}/{b}" : {
      "x-amazon-apigateway-any-method" : {
        "parameters" : [ {
          "name" : "a",
          "in" : "path",
          "required" : true,
          "schema" : {
            "type" : "string"
          }
        }, {
          "name" : "b",
          "in" : "path",
          "required" : true,
          "schema" : {
            "type" : "string"
          }
        } ],
        "responses" : {
          "404" : {
            "description" : "404 response",
            "content" : { }
          }
        },
        "x-amazon-apigateway-integration" : {
          "type" : "mock",
          "responses" : {
            "default" : {
              "statusCode" : "404",
              "responseTemplates" : {
                "application/json" : "{ \"Message\" : \"Can't $context.httpMethod $context.resourcePath\" }"
              }
            }
          },
          "requestTemplates" : {
            "application/json" : "{\"statusCode\": 200}"
          },
          "passthroughBehavior" : "when_no_match"
        }
      }
    },
    "/{a}/{b}/{op}" : {
      "get" : {
        "parameters" : [ {
          "name" : "a",
          "in" : "path",
          "required" : true,
          "schema" : {
            "type" : "string"
          }
        }, {
          "name" : "b",
          "in" : "path",
          "required" : true,
          "schema" : {
            "type" : "string"
          }
        }, {
          "name" : "op",
          "in" : "path",
          "required" : true,
          "schema" : {
            "type" : "string"
          }
        } ],
        "responses" : {
          "200" : {
            "description" : "200 response",
            "content" : {
              "application/json" : {
                "schema" : {
                  "$ref" : "#/components/schemas/Result"
                }
              }
            }
          }
        },
        "x-amazon-apigateway-integration" : {
          "type" : "aws",
          "httpMethod" : "POST",
          "uri" : "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:111122223333:function:Calc/invocations",
          "responses" : {
            "default" : {
              "statusCode" : "200",
              "responseTemplates" : {
                "application/json" : "#set($inputRoot = $input.path('$'))\n{\n  \"input\" : {\n    \"a\" : $inputRoot.a,\n    \"b\" : $inputRoot.b,\n    \"op\" : \"$inputRoot.op\"\n  },\n  \"output\" : {\n    \"c\" : $inputRoot.c\n  }\n}"
              }
            }
          },
          "requestTemplates" : {
            "application/json" : "#set($inputRoot = $input.path('$'))\n{\n  \"a\" : $input.params('a'),\n  \"b\" : $input.params('b'),\n  \"op\" : \"$input.params('op')\"\n}"
          },
          "passthroughBehavior" : "when_no_templates"
        }
      }
    },
    "/" : {
      "get" : {
        "parameters" : [ {
          "name" : "op",
          "in" : "query",
          "schema" : {
            "type" : "string"
          }
        }, {
          "name" : "a",
          "in" : "query",
          "schema" : {
            "type" : "string"
          }
        }, {
          "name" : "b",
          "in" : "query",
          "schema" : {
            "type" : "string"
          }
        } ],
        "responses" : {
          "200" : {
            "description" : "200 response",
            "content" : {
              "application/json" : {
                "schema" : {
                  "$ref" : "#/components/schemas/Result"
                }
              }
            }
          }
        },
        "x-amazon-apigateway-integration" : {
          "type" : "aws",
          "httpMethod" : "POST",
          "uri" : "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:111122223333:function:Calc/invocations",
          "responses" : {
            "default" : {
              "statusCode" : "200",
              "responseTemplates" : {
                "application/json" : "#set($inputRoot = $input.path('$'))\n{\n  \"input\" : {\n    \"a\" : $inputRoot.a,\n    \"b\" : $inputRoot.b,\n    \"op\" : \"$inputRoot.op\"\n  },\n  \"output\" : {\n    \"c\" : $inputRoot.c\n  }\n}"
              }
            }
          },
          "requestTemplates" : {
            "application/json" : "#set($inputRoot = $input.path('$'))\n{\n  \"a\" : $input.params('a'),\n  \"b\" : $input.params('b'),\n  \"op\" : \"$input.params('op')\"\n}"
          },
          "passthroughBehavior" : "when_no_templates"
        }
      },
      "post" : {
        "requestBody" : {
          "content" : {
            "application/json" : {
              "schema" : {
                "$ref" : "#/components/schemas/Input"
              }
            }
          },
          "required" : true
        },
        "responses" : {
          "200" : {
            "description" : "200 response",
            "content" : {
              "application/json" : {
                "schema" : {
                  "$ref" : "#/components/schemas/Result"
                }
              }
            }
          }
        },
        "x-amazon-apigateway-integration" : {
          "type" : "aws",
          "httpMethod" : "POST",
          "uri" : "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:111122223333:function:Calc/invocations",
          "responses" : {
            "default" : {
              "statusCode" : "200",
              "responseTemplates" : {
                "application/json" : "#set($inputRoot = $input.path('$'))\n{\n  \"input\" : {\n    \"a\" : $inputRoot.a,\n    \"b\" : $inputRoot.b,\n    \"op\" : \"$inputRoot.op\"\n  },\n  \"output\" : {\n    \"c\" : $inputRoot.c\n  }\n}"
              }
            }
          },
          "passthroughBehavior" : "when_no_match"
        }
      }
    },
    "/{a}" : {
      "x-amazon-apigateway-any-method" : {
        "parameters" : [ {
          "name" : "a",
          "in" : "path",
          "required" : true,
          "schema" : {
            "type" : "string"
          }
        } ],
        "responses" : {
          "404" : {
            "description" : "404 response",
            "content" : { }
          }
        },
        "x-amazon-apigateway-integration" : {
          "type" : "mock",
          "responses" : {
            "default" : {
              "statusCode" : "404",
              "responseTemplates" : {
                "application/json" : "{ \"Message\" : \"Can't $context.httpMethod $context.resourcePath\" }"
              }
            }
          },
          "requestTemplates" : {
            "application/json" : "{\"statusCode\": 200}"
          },
          "passthroughBehavior" : "when_no_match"
        }
      }
    }
  },
  "components" : {
    "schemas" : {
      "Input" : {
        "title" : "Input",
        "type" : "object",
        "properties" : {
          "a" : {
            "type" : "number"
          },
          "b" : {
            "type" : "number"
          },
          "op" : {
            "type" : "string"
          }
        }
      },
      "Output" : {
        "title" : "Output",
        "type" : "object",
        "properties" : {
          "c" : {
            "type" : "number"
          }
        }
      },
      "Result" : {
        "title" : "Result",
        "type" : "object",
        "properties" : {
          "input" : {
            "$ref" : "#/components/schemas/Input"
          },
          "output" : {
            "$ref" : "#/components/schemas/Output"
          }
        }
      }
    }
  }
}
```

------