Chilkat Online Tools

StartQueryExecution Swift3 Example

Athena

func chilkatTest() {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let rest = CkoRest()!
    var success: Bool

    let authAws = CkoAuthAws()!
    authAws.accessKey = "AWS_ACCESS_KEY"
    authAws.secretKey = "AWS_SECRET_KEY"

    // Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
    authAws.region = "us-west-2"
    authAws.serviceName = "athena"
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    rest.setAuthAws(authAws)

    // URL: https://athena.us-west-2.amazonaws.com/
    // Use the same region as specified above.
    success = rest.connect("athena.us-west-2.amazonaws.com", port: 443, tls: true, autoReconnect: true)
    if success != true {
        print("ConnectFailReason: \(rest.connectFailReason.intValue)")
        print("\(rest.lastErrorText!)")
        return
    }

    // The following code creates the JSON request body.
    // The JSON created by this code is shown below.

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    let json = CkoJsonObject()!
    json.update("ClientRequestToken", value: "string")
    json.update("QueryExecutionContext.Catalog", value: "string")
    json.update("QueryExecutionContext.Database", value: "string")
    json.update("QueryString", value: "string")
    json.update("ResultConfiguration.AclConfiguration.S3AclOption", value: "string")
    json.update("ResultConfiguration.EncryptionConfiguration.EncryptionOption", value: "string")
    json.update("ResultConfiguration.EncryptionConfiguration.KmsKey", value: "string")
    json.update("ResultConfiguration.ExpectedBucketOwner", value: "string")
    json.update("ResultConfiguration.OutputLocation", value: "string")
    json.update("WorkGroup", value: "string")

    // The JSON request body created by the above code:

    // {
    //   "ClientRequestToken": "string",
    //   "QueryExecutionContext": {
    //     "Catalog": "string",
    //     "Database": "string"
    //   },
    //   "QueryString": "string",
    //   "ResultConfiguration": {
    //     "AclConfiguration": {
    //       "S3AclOption": "string"
    //     },
    //     "EncryptionConfiguration": {
    //       "EncryptionOption": "string",
    //       "KmsKey": "string"
    //     },
    //     "ExpectedBucketOwner": "string",
    //     "OutputLocation": "string"
    //   },
    //   "WorkGroup": "string"
    // }

    rest.addHeader("Content-Type", value: "application/x-amz-json-1.1")
    rest.addHeader("X-Amz-Target", value: "AmazonAthena.StartQueryExecution")

    let sbRequestBody = CkoStringBuilder()!
    json.emitSb(sbRequestBody)
    let sbResponseBody = CkoStringBuilder()!
    success = rest.fullRequestSb("POST", uriPath: "/", requestBody: sbRequestBody, responseBody: sbResponseBody)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    var respStatusCode: Int = rest.responseStatusCode.intValue
    print("response status code = \(respStatusCode)")
    if respStatusCode != 200 {
        print("Response Header:")
        print("\(rest.responseHeader!)")
        print("Response Body:")
        print("\(sbResponseBody.getAsString()!)")
        return
    }

    let jResp = CkoJsonObject()!
    jResp.loadSb(sbResponseBody)

    // The following code parses the JSON response.
    // A sample JSON response is shown below the sample code.

    // Use this online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    var QueryExecutionId: String? = jResp.string(of: "QueryExecutionId")

    // A sample JSON response body parsed by the above code:

    // {
    //   "QueryExecutionId": "string"
    // }

}