Swift
Swift
DynamoDB - DescribeTable
See more Amazon DynamoDB Examples
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.Chilkat Swift Downloads
func chilkatTest() {
var success: Bool = false
let rest = CkoRest()!
// 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(authProvider: 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(hostname: "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.updateString(jsonPath: "TableName", value: "Thread")
rest.addHeader(name: "Content-Type", value: "application/x-amz-json-1.0")
rest.addHeader(name: "X-Amz-Target", value: "DynamoDB_20120810.DescribeTable")
rest.addHeader(name: "Accept-Encoding", value: "identity")
let sbRequestBody = CkoStringBuilder()!
json.emitSb(sb: sbRequestBody)
let sbResponseBody = CkoStringBuilder()!
success = rest.fullRequestSb(httpVerb: "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(sb: 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
}
}