(Visual Basic 6.0) 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 ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim rest As New ChilkatRest
Dim success As Long

' 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

Dim authAws As New ChilkatAuthAws
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
success = rest.SetAuthAws(authAws)

' URL: https://dynamodb.us-west-2.amazonaws.com/
Dim bTls As Long
bTls = 1
Dim port As Long
port = 443
Dim bAutoReconnect As Long
bAutoReconnect = 1
' 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,bTls,bAutoReconnect)
If (success <> 1) Then
    Debug.Print "ConnectFailReason: " & rest.ConnectFailReason
    Debug.Print rest.LastErrorText
    Exit Sub
End If

' 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"
' }

Dim json As New ChilkatJsonObject
success = json.UpdateString("TableName","Thread")

success = rest.AddHeader("Content-Type","application/x-amz-json-1.0")
success = rest.AddHeader("X-Amz-Target","DynamoDB_20120810.DescribeTable")
success = rest.AddHeader("Accept-Encoding","identity")

Dim sbRequestBody As New ChilkatStringBuilder
success = json.EmitSb(sbRequestBody)
Dim sbResponseBody As New ChilkatStringBuilder
success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody)
If (success <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Dim respStatusCode As Long
respStatusCode = rest.ResponseStatusCode
Debug.Print "response status code = " & respStatusCode
If (respStatusCode >= 400) Then
    Debug.Print "Response Status Code = " & respStatusCode
    Debug.Print "Response Header:"
    Debug.Print rest.ResponseHeader
    Debug.Print "Response Body:"
    Debug.Print sbResponseBody.GetAsString()
    Exit Sub
End If

Dim jsonResponse As New ChilkatJsonObject
success = jsonResponse.LoadSb(sbResponseBody)

jsonResponse.EmitCompact = 0
Debug.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

Dim AttributeName As String
Dim AttributeType As String
Dim KeyType As String
Dim IndexArn As String
Dim IndexName As String
Dim IndexSizeBytes As Long
Dim ItemCount As Long
Dim ProjectionProjectionType As String
Dim j As Long
Dim count_j As Long

Dim TableTableArn As String
TableTableArn = jsonResponse.StringOf("Table.TableArn")
Dim TableCreationDateTime As String
TableCreationDateTime = jsonResponse.StringOf("Table.CreationDateTime")
Dim TableItemCount As Long
TableItemCount = jsonResponse.IntOf("Table.ItemCount")
Dim TableProvisionedThroughputNumberOfDecreasesToday As Long
TableProvisionedThroughputNumberOfDecreasesToday = jsonResponse.IntOf("Table.ProvisionedThroughput.NumberOfDecreasesToday")
Dim TableProvisionedThroughputReadCapacityUnits As Long
TableProvisionedThroughputReadCapacityUnits = jsonResponse.IntOf("Table.ProvisionedThroughput.ReadCapacityUnits")
Dim TableProvisionedThroughputWriteCapacityUnits As Long
TableProvisionedThroughputWriteCapacityUnits = jsonResponse.IntOf("Table.ProvisionedThroughput.WriteCapacityUnits")
Dim TableTableName As String
TableTableName = jsonResponse.StringOf("Table.TableName")
Dim TableTableSizeBytes As Long
TableTableSizeBytes = jsonResponse.IntOf("Table.TableSizeBytes")
Dim TableTableStatus As String
TableTableStatus = jsonResponse.StringOf("Table.TableStatus")
Dim i As Long
i = 0
Dim count_i As Long
count_i = jsonResponse.SizeOfArray("Table.AttributeDefinitions")
Do While i < count_i
    jsonResponse.I = i
    AttributeName = jsonResponse.StringOf("Table.AttributeDefinitions[i].AttributeName")
    AttributeType = jsonResponse.StringOf("Table.AttributeDefinitions[i].AttributeType")
    i = i + 1
Loop
i = 0
count_i = jsonResponse.SizeOfArray("Table.KeySchema")
Do While i < count_i
    jsonResponse.I = i
    AttributeName = jsonResponse.StringOf("Table.KeySchema[i].AttributeName")
    KeyType = jsonResponse.StringOf("Table.KeySchema[i].KeyType")
    i = i + 1
Loop
i = 0
count_i = jsonResponse.SizeOfArray("Table.LocalSecondaryIndexes")
Do While i < count_i
    jsonResponse.I = i
    IndexArn = jsonResponse.StringOf("Table.LocalSecondaryIndexes[i].IndexArn")
    IndexName = jsonResponse.StringOf("Table.LocalSecondaryIndexes[i].IndexName")
    IndexSizeBytes = jsonResponse.IntOf("Table.LocalSecondaryIndexes[i].IndexSizeBytes")
    ItemCount = jsonResponse.IntOf("Table.LocalSecondaryIndexes[i].ItemCount")
    ProjectionProjectionType = jsonResponse.StringOf("Table.LocalSecondaryIndexes[i].Projection.ProjectionType")
    j = 0
    count_j = jsonResponse.SizeOfArray("Table.LocalSecondaryIndexes[i].KeySchema")
    Do While j < count_j
        jsonResponse.J = j
        AttributeName = jsonResponse.StringOf("Table.LocalSecondaryIndexes[i].KeySchema[j].AttributeName")
        KeyType = jsonResponse.StringOf("Table.LocalSecondaryIndexes[i].KeySchema[j].KeyType")
        j = j + 1
    Loop
    i = i + 1
Loop