(Lianja) 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

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loRest = createobject("CkRest")

// 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

loAuthAws = createobject("CkAuthAws")
loAuthAws.AccessKey = "AWS_ACCESS_KEY"
loAuthAws.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.)
loAuthAws.Region = "us-west-2"
loAuthAws.ServiceName = "dynamodb"
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
loRest.SetAuthAws(loAuthAws)

// URL: https://dynamodb.us-west-2.amazonaws.com/
llBTls = .T.
lnPort = 443
llBAutoReconnect = .T.
// Don't forget to change the region domain (us-west-2.amazonaws.com) to your particular region.
llSuccess = loRest.Connect("dynamodb.us-west-2.amazonaws.com",lnPort,llBTls,llBAutoReconnect)
if (llSuccess <> .T.) then
    ? "ConnectFailReason: " + str(loRest.ConnectFailReason)
    ? loRest.LastErrorText
    release loRest
    release loAuthAws
    return
endif

// 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"
// }

loJson = createobject("CkJsonObject")
loJson.UpdateString("TableName","Thread")

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

loSbRequestBody = createobject("CkStringBuilder")
loJson.EmitSb(loSbRequestBody)
loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loRest.FullRequestSb("POST","/",loSbRequestBody,loSbResponseBody)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    release loAuthAws
    release loJson
    release loSbRequestBody
    release loSbResponseBody
    return
endif

lnRespStatusCode = loRest.ResponseStatusCode
? "response status code = " + str(lnRespStatusCode)
if (lnRespStatusCode >= 400) then
    ? "Response Status Code = " + str(lnRespStatusCode)
    ? "Response Header:"
    ? loRest.ResponseHeader
    ? "Response Body:"
    ? loSbResponseBody.GetAsString()
    release loRest
    release loAuthAws
    release loJson
    release loSbRequestBody
    release loSbResponseBody
    return
endif

loJsonResponse = createobject("CkJsonObject")
loJsonResponse.LoadSb(loSbResponseBody)

loJsonResponse.EmitCompact = .F.
? loJsonResponse.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

lcTableTableArn = loJsonResponse.StringOf("Table.TableArn")
lcTableCreationDateTime = loJsonResponse.StringOf("Table.CreationDateTime")
lnTableItemCount = loJsonResponse.IntOf("Table.ItemCount")
lnTableProvisionedThroughputNumberOfDecreasesToday = loJsonResponse.IntOf("Table.ProvisionedThroughput.NumberOfDecreasesToday")
lnTableProvisionedThroughputReadCapacityUnits = loJsonResponse.IntOf("Table.ProvisionedThroughput.ReadCapacityUnits")
lnTableProvisionedThroughputWriteCapacityUnits = loJsonResponse.IntOf("Table.ProvisionedThroughput.WriteCapacityUnits")
lcTableTableName = loJsonResponse.StringOf("Table.TableName")
lnTableTableSizeBytes = loJsonResponse.IntOf("Table.TableSizeBytes")
lcTableTableStatus = loJsonResponse.StringOf("Table.TableStatus")
i = 0
lnCount_i = loJsonResponse.SizeOfArray("Table.AttributeDefinitions")
do while i < lnCount_i
    loJsonResponse.I = i
    lcAttributeName = loJsonResponse.StringOf("Table.AttributeDefinitions[i].AttributeName")
    lcAttributeType = loJsonResponse.StringOf("Table.AttributeDefinitions[i].AttributeType")
    i = i + 1
enddo
i = 0
lnCount_i = loJsonResponse.SizeOfArray("Table.KeySchema")
do while i < lnCount_i
    loJsonResponse.I = i
    lcAttributeName = loJsonResponse.StringOf("Table.KeySchema[i].AttributeName")
    lcKeyType = loJsonResponse.StringOf("Table.KeySchema[i].KeyType")
    i = i + 1
enddo
i = 0
lnCount_i = loJsonResponse.SizeOfArray("Table.LocalSecondaryIndexes")
do while i < lnCount_i
    loJsonResponse.I = i
    lcIndexArn = loJsonResponse.StringOf("Table.LocalSecondaryIndexes[i].IndexArn")
    lcIndexName = loJsonResponse.StringOf("Table.LocalSecondaryIndexes[i].IndexName")
    lnIndexSizeBytes = loJsonResponse.IntOf("Table.LocalSecondaryIndexes[i].IndexSizeBytes")
    lnItemCount = loJsonResponse.IntOf("Table.LocalSecondaryIndexes[i].ItemCount")
    lcProjectionProjectionType = loJsonResponse.StringOf("Table.LocalSecondaryIndexes[i].Projection.ProjectionType")
    j = 0
    lnCount_j = loJsonResponse.SizeOfArray("Table.LocalSecondaryIndexes[i].KeySchema")
    do while j < lnCount_j
        loJsonResponse.J = j
        lcAttributeName = loJsonResponse.StringOf("Table.LocalSecondaryIndexes[i].KeySchema[j].AttributeName")
        lcKeyType = loJsonResponse.StringOf("Table.LocalSecondaryIndexes[i].KeySchema[j].KeyType")
        j = j + 1
    enddo
    i = i + 1
enddo


release loRest
release loAuthAws
release loJson
release loSbRequestBody
release loSbResponseBody
release loJsonResponse