Chilkat Online Tools

GetTableMetadata Go Example

Athena

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

    rest := chilkat.NewRest()
    var success bool

    authAws := chilkat.NewAuthAws()
    authAws.SetAccessKey("AWS_ACCESS_KEY")
    authAws.SetSecretKey("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.SetRegion("us-west-2")
    authAws.SetServiceName("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",443,true,true)
    if success != true {
        fmt.Println("ConnectFailReason: ", rest.ConnectFailReason())
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        authAws.DisposeAuthAws()
        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

    json := chilkat.NewJsonObject()
    json.UpdateString("CatalogName","string")
    json.UpdateString("DatabaseName","string")
    json.UpdateString("TableName","string")

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

    // {
    //   "CatalogName": "string",
    //   "DatabaseName": "string",
    //   "TableName": "string"
    // }

    rest.AddHeader("Content-Type","application/x-amz-json-1.1")
    rest.AddHeader("X-Amz-Target","AmazonAthena.GetTableMetadata")

    sbRequestBody := chilkat.NewStringBuilder()
    json.EmitSb(sbRequestBody)
    sbResponseBody := chilkat.NewStringBuilder()
    success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody)
    if success != true {
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        authAws.DisposeAuthAws()
        json.DisposeJsonObject()
        sbRequestBody.DisposeStringBuilder()
        sbResponseBody.DisposeStringBuilder()
        return
    }

    respStatusCode := rest.ResponseStatusCode()
    fmt.Println("response status code = ", respStatusCode)
    if respStatusCode != 200 {
        fmt.Println("Response Header:")
        fmt.Println(rest.ResponseHeader())
        fmt.Println("Response Body:")
        fmt.Println(*sbResponseBody.GetAsString())
        rest.DisposeRest()
        authAws.DisposeAuthAws()
        json.DisposeJsonObject()
        sbRequestBody.DisposeStringBuilder()
        sbResponseBody.DisposeStringBuilder()
        return
    }

    jResp := chilkat.NewJsonObject()
    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

Comment_DECLARATION
v_Type_DECLARATION

    CreateTime := jResp.IntOf("TableMetadata.CreateTime")
    LastAccessTime := jResp.IntOf("TableMetadata.LastAccessTime")
    Name := jResp.StringOf("TableMetadata.Name")
    v_String := jResp.StringOf("TableMetadata.Parameters.string")
    TableType := jResp.StringOf("TableMetadata.TableType")
    i := 0
    count_i := jResp.SizeOfArray("TableMetadata.Columns")
    for i < count_i {
        jResp.SetI(i)
        Comment = *jResp.StringOf("TableMetadata.Columns[i].Comment")
        Name = *jResp.StringOf("TableMetadata.Columns[i].Name")
        v_Type = *jResp.StringOf("TableMetadata.Columns[i].Type")
        i = i + 1
    }

    i = 0
    count_i = jResp.SizeOfArray("TableMetadata.PartitionKeys")
    for i < count_i {
        jResp.SetI(i)
        Comment = *jResp.StringOf("TableMetadata.PartitionKeys[i].Comment")
        Name = *jResp.StringOf("TableMetadata.PartitionKeys[i].Name")
        v_Type = *jResp.StringOf("TableMetadata.PartitionKeys[i].Type")
        i = i + 1
    }

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

    // {
    //   "TableMetadata": {
    //     "Columns": [
    //       {
    //         "Comment": "string",
    //         "Name": "string",
    //         "Type": "string"
    //       }
    //     ],
    //     "CreateTime": number,
    //     "LastAccessTime": number,
    //     "Name": "string",
    //     "Parameters": {
    //       "string": "string"
    //     },
    //     "PartitionKeys": [
    //       {
    //         "Comment": "string",
    //         "Name": "string",
    //         "Type": "string"
    //       }
    //     ],
    //     "TableType": "string"
    //   }
    // }

    rest.DisposeRest()
    authAws.DisposeAuthAws()
    json.DisposeJsonObject()
    sbRequestBody.DisposeStringBuilder()
    sbResponseBody.DisposeStringBuilder()
    jResp.DisposeJsonObject()