(Swift 3,4,5...) DynamoDB - DescribeTable

Returns information about the table, including the current status of the table, when it was created, the primary key schema, and any indexes on the table.

For more information, see https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_DescribeTable.html

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    let rest = CkoRest()!
    var success: Bool

    // Implements the following CURL command:

    // curl -X POST https://dynamodb.us-west-2.amazonaws.com/ \
    //   -H "Accept-Encoding: identity" \
    //   -H "Content-Type: application/x-amz-json-1.0" \
    //   -H "Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=<Headers>, Signature=<Signature>" \
    //   -H "X-Amz-Date: <Date>" \
    //   -H "X-Amz-Target: DynamoDB_20120810.DescribeTable" \
    //   -d '{
    //     "TableName":"Thread"
    // }'

    // Use the following online tool to generate REST code from a CURL command
    // Convert a cURL Command to REST Source Code

    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 = "dynamodb"
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    rest.setAuthAws(authAws)

    // URL: https://dynamodb.us-west-2.amazonaws.com/
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    // Don't forget to change the region domain (us-west-2.amazonaws.com) to your particular region.
    success = rest.connect("dynamodb.us-west-2.amazonaws.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)
    if success != true {
        print("ConnectFailReason: \(rest.connectFailReason.intValue)")
        print("\(rest.lastErrorText!)")
        return
    }

    // Note: The above code does not need to be repeatedly called for each REST request.
    // The rest object can be setup once, and then many requests can be sent.  Chilkat will automatically
    // reconnect within a FullRequest* method as needed.  It is only the very first connection that is explicitly
    // made via the Connect method.

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

    // The following JSON is sent in the request body.

    // {
    //   "TableName": "Thread"
    // }

    let json = CkoJsonObject()!
    json.update("TableName", value: "Thread")

    rest.addHeader("Content-Type", value: "application/x-amz-json-1.0")
    rest.addHeader("X-Amz-Target", value: "DynamoDB_20120810.DescribeTable")
    rest.addHeader("Accept-Encoding", value: "identity")

    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 >= 400 {
        print("Response Status Code = \(respStatusCode)")
        print("Response Header:")
        print("\(rest.responseHeader!)")
        print("Response Body:")
        print("\(sbResponseBody.getAsString()!)")
        return
    }

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

    jsonResponse.emitCompact = false
    print("\(jsonResponse.emit()!)")

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "Table": {
    //     "TableArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread",
    //     "AttributeDefinitions": [
    //       {
    //         "AttributeName": "ForumName",
    //         "AttributeType": "S"
    //       },
    //       {
    //         "AttributeName": "LastPostDateTime",
    //         "AttributeType": "S"
    //       },
    //       {
    //         "AttributeName": "Subject",
    //         "AttributeType": "S"
    //       }
    //     ],
    //     "CreationDateTime": 1.363729002358E9,
    //     "ItemCount": 0,
    //     "KeySchema": [
    //       {
    //         "AttributeName": "ForumName",
    //         "KeyType": "HASH"
    //       },
    //       {
    //         "AttributeName": "Subject",
    //         "KeyType": "RANGE"
    //       }
    //     ],
    //     "LocalSecondaryIndexes": [
    //       {
    //         "IndexArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread/index/LastPostIndex",
    //         "IndexName": "LastPostIndex",
    //         "IndexSizeBytes": 0,
    //         "ItemCount": 0,
    //         "KeySchema": [
    //           {
    //             "AttributeName": "ForumName",
    //             "KeyType": "HASH"
    //           },
    //           {
    //             "AttributeName": "LastPostDateTime",
    //             "KeyType": "RANGE"
    //           }
    //         ],
    //         "Projection": {
    //           "ProjectionType": "KEYS_ONLY"
    //         }
    //       }
    //     ],
    //     "ProvisionedThroughput": {
    //       "NumberOfDecreasesToday": 0,
    //       "ReadCapacityUnits": 5,
    //       "WriteCapacityUnits": 5
    //     },
    //     "TableName": "Thread",
    //     "TableSizeBytes": 0,
    //     "TableStatus": "ACTIVE"
    //   }
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    var AttributeName: String?
    var AttributeType: String?
    var KeyType: String?
    var IndexArn: String?
    var IndexName: String?
    var IndexSizeBytes: Int
    var ItemCount: Int
    var ProjectionProjectionType: String?
    var j: Int
    var count_j: Int

    var TableTableArn: String? = jsonResponse.string(of: "Table.TableArn")
    var TableCreationDateTime: String? = jsonResponse.string(of: "Table.CreationDateTime")
    var TableItemCount: Int = jsonResponse.int(of: "Table.ItemCount").intValue
    var TableProvisionedThroughputNumberOfDecreasesToday: Int = jsonResponse.int(of: "Table.ProvisionedThroughput.NumberOfDecreasesToday").intValue
    var TableProvisionedThroughputReadCapacityUnits: Int = jsonResponse.int(of: "Table.ProvisionedThroughput.ReadCapacityUnits").intValue
    var TableProvisionedThroughputWriteCapacityUnits: Int = jsonResponse.int(of: "Table.ProvisionedThroughput.WriteCapacityUnits").intValue
    var TableTableName: String? = jsonResponse.string(of: "Table.TableName")
    var TableTableSizeBytes: Int = jsonResponse.int(of: "Table.TableSizeBytes").intValue
    var TableTableStatus: String? = jsonResponse.string(of: "Table.TableStatus")
    var i: Int = 0
    var count_i: Int = jsonResponse.size(ofArray: "Table.AttributeDefinitions").intValue
    while i < count_i {
        jsonResponse.i = i
        AttributeName = jsonResponse.string(of: "Table.AttributeDefinitions[i].AttributeName")
        AttributeType = jsonResponse.string(of: "Table.AttributeDefinitions[i].AttributeType")
        i = i + 1
    }

    i = 0
    count_i = jsonResponse.size(ofArray: "Table.KeySchema").intValue
    while i < count_i {
        jsonResponse.i = i
        AttributeName = jsonResponse.string(of: "Table.KeySchema[i].AttributeName")
        KeyType = jsonResponse.string(of: "Table.KeySchema[i].KeyType")
        i = i + 1
    }

    i = 0
    count_i = jsonResponse.size(ofArray: "Table.LocalSecondaryIndexes").intValue
    while i < count_i {
        jsonResponse.i = i
        IndexArn = jsonResponse.string(of: "Table.LocalSecondaryIndexes[i].IndexArn")
        IndexName = jsonResponse.string(of: "Table.LocalSecondaryIndexes[i].IndexName")
        IndexSizeBytes = jsonResponse.int(of: "Table.LocalSecondaryIndexes[i].IndexSizeBytes").intValue
        ItemCount = jsonResponse.int(of: "Table.LocalSecondaryIndexes[i].ItemCount").intValue
        ProjectionProjectionType = jsonResponse.string(of: "Table.LocalSecondaryIndexes[i].Projection.ProjectionType")
        j = 0
        count_j = jsonResponse.size(ofArray: "Table.LocalSecondaryIndexes[i].KeySchema").intValue
        while j < count_j {
            jsonResponse.j = j
            AttributeName = jsonResponse.string(of: "Table.LocalSecondaryIndexes[i].KeySchema[j].AttributeName")
            KeyType = jsonResponse.string(of: "Table.LocalSecondaryIndexes[i].KeySchema[j].KeyType")
            j = j + 1
        }

        i = i + 1
    }


}