(Xojo Plugin) Amazon Glacier Get Vault Access Policy

Demonstrates how to retrieve the access-policy subresource set on the vault

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim rest As New Chilkat.Rest

// Connect to the Amazon AWS REST server in the desired region.
Dim bTls As Boolean
bTls = True
Dim port As Int32
port = 443
Dim bAutoReconnect As Boolean
bAutoReconnect = True
Dim success As Boolean
success = rest.Connect("glacier.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)

// Provide AWS credentials.
Dim authAws As New Chilkat.AuthAws
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
authAws.ServiceName = "glacier"
authAws.Region = "us-west-2"

success = rest.SetAuthAws(authAws)

// --------------------------------------------------------------------------
// Note: The above REST connection and setup of the AWS credentials
// can be done once.  After connecting, any number of REST calls can be made.
// The "auto reconnect" property passed to rest.Connect indicates that if
// the connection is lost, a REST method call will automatically reconnect
// if needed.
// --------------------------------------------------------------------------

// 
// For more information, see Glacier Get Vault Access Policy Reference Documentation
// 
success = rest.AddHeader("x-amz-glacier-version","2012-06-01")

// Get the access policy for the "chilkat" vault.
Dim sbResponseBody As New Chilkat.StringBuilder
success = rest.FullRequestNoBodySb("GET","/AWS_ACCOUNT_ID/vaults/chilkat/access-policy",sbResponseBody)
If (success <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

Dim respStatusCode As Int32
respStatusCode = rest.ResponseStatusCode
If (respStatusCode >= 400) Then
    System.DebugLog("Response Status Code = " + Str(respStatusCode))
    System.DebugLog("Response Header:")
    System.DebugLog(rest.ResponseHeader)
    System.DebugLog("Response Body:")
    System.DebugLog(sbResponseBody.GetAsString())
    Return
End If

// Success is indicated by a 200 response status.
System.DebugLog("response status code = " + Str(respStatusCode))

Dim json As New Chilkat.JsonObject
success = json.LoadSb(sbResponseBody)
json.EmitCompact = False

// Returns JSON such as this:
// {
//   "Policy": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Define-owner-access-rights\",\"Effect\":\"Allow\",\"Principal\":{\"AWS\":\"arn:aws:iam::9999999999999:root\"},\"Action\":\"glacier:DeleteArchive\",\"Resource\":\"arn:aws:glacier:us-west-2:9999999999999:vaults/chilkat\"}]}"
// }

// Unwrap...
Dim jsonPolicy As New Chilkat.JsonObject
success = jsonPolicy.Load(json.StringOf("Policy"))
jsonPolicy.EmitCompact = False

System.DebugLog(jsonPolicy.Emit())
System.DebugLog("----")

// The jsonPolicy contains:

// {
//   "Version": "2012-10-17",
//   "Statement": [
//     {
//       "Sid": "Define-owner-access-rights",
//       "Effect": "Allow",
//       "Principal": {
//         "AWS": "arn:aws:iam::9999999999999:root"
//       },
//       "Action": "glacier:DeleteArchive",
//       "Resource": "arn:aws:glacier:us-west-2:9999999999999:vaults/chilkat"
//     }
//   ]
// }
// 

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

// To parse the above contents of jsonPolicy...
Dim Version As String
Dim i As Int32
Dim count_i As Int32
Dim Sid As String
Dim Effect As String
Dim PrincipalAWS As String
Dim Action As String
Dim Resource As String

Version = jsonPolicy.StringOf("Version")
i = 0
count_i = jsonPolicy.SizeOfArray("Statement")
While i < count_i
    jsonPolicy.I = i
    Sid = jsonPolicy.StringOf("Statement[i].Sid")
    Effect = jsonPolicy.StringOf("Statement[i].Effect")
    PrincipalAWS = jsonPolicy.StringOf("Statement[i].Principal.AWS")
    Action = jsonPolicy.StringOf("Statement[i].Action")
    Resource = jsonPolicy.StringOf("Statement[i].Resource")
    i = i + 1
Wend