B4X
Wasabi List Bucket Objects

Demonstrates how to download and parse XML for the list of objects in a bucket.
Chilkat B4X Downloads

B4X
Dim success As Boolean = False

'  This example assumes the Chilkat HTTP API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim http As ChilkatHttp
http.Initialize("http")

'  Insert your access key here:
http.AwsAccessKey = "access-key"

'  Insert your secret key here:
http.AwsSecretKey = "secret-key"

'  Use the endpoint matching the bucket's region.
http.AwsEndpoint = "s3.us-west-1.wasabisys.com"

Dim bucketName As String = "chilkattest"

Dim strXml As String = http.S3_ListBucketObjects(bucketName)
If http.LastMethodSuccess <> True Then
    Log(http.LastErrorText)
    Return
End If


Log("Response status code = " & http.LastStatus)

Dim xml As ChilkatXml
xml.Initialize
success = xml.LoadXml(strXml)
If success <> True Then
    Log(xml.LastErrorText)
    Return
End If


'  If the response status code was not 200, then the XML response is not a 
'  listing of objects, but instead contains error information.
If http.LastStatus <> 200 Then
    Log(xml.GetXml)
    Log("Failed.")
    Return
End If


'  A sample response is shown below.
Log(xml.GetXml)
Log("----")

'  Use this online tool to generate parsing code from sample XML: 
'  Generate Parsing Code from XML

'  <?xml version="1.0" encoding="UTF-8"?>
'  <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
'      <Name>chilkattest</Name>
'      <Prefix/>
'      <Marker/>
'      <MaxKeys>1000</MaxKeys>
'      <IsTruncated>false</IsTruncated>
'      <Contents>
'          <Key>orchard.json</Key>
'          <LastModified>2021-10-27T22:58:49.000Z</LastModified>
'          <ETag>&quot;303fb46cf341094fef6274b7789cd6aa&quot;</ETag>
'          <Size>22</Size>
'          <Owner>
'              <ID>1039F31570DBC320E89D391632FCA06FE6D10CBB2ADBD0BF6439BB1DA0C3FAD6</ID>
'              <DisplayName>admin</DisplayName>
'          </Owner>
'          <StorageClass>STANDARD</StorageClass>
'      </Contents>
'      <Contents>
'          <Key>seahorse.jpg</Key>
'          <LastModified>2021-10-27T22:35:29.000Z</LastModified>
'          <ETag>&quot;a8551f0a5437f43a796fca7623ee9232&quot;</ETag>
'          <Size>24388</Size>
'          <Owner>
'              <ID>1039F31570DBC320E89D391632FCA06FE6D10CBB2ADBD0BF6439BB1DA0C3FAD6</ID>
'              <DisplayName>admin</DisplayName>
'          </Owner>
'          <StorageClass>STANDARD</StorageClass>
'      </Contents>
'      <Contents>
'          <Key>seahorse2.jpg</Key>
'          <LastModified>2021-10-27T22:03:51.000Z</LastModified>
'          <ETag>&quot;a8551f0a5437f43a796fca7623ee9232&quot;</ETag>
'          <Size>24388</Size>
'          <Owner>
'              <ID>1039F31570DBC320E89D391632FCA06FE6D10CBB2ADBD0BF6439BB1DA0C3FAD6</ID>
'              <DisplayName>admin</DisplayName>
'          </Owner>
'          <StorageClass>STANDARD</StorageClass>
'      </Contents>
'  </ListBucketResult>

Dim Key As String
Dim LastModified As String
Dim ETag As String
Dim SizeDecimalStr As String
Dim ID As String
Dim DisplayName As String
Dim StorageClass As String

Dim ListBucketResult_xmlns As String = xml.GetAttrValue("xmlns")
Dim Name As String = xml.GetChildContent("Name")
Dim MaxKeys As Int = xml.GetChildIntValue("MaxKeys")
Dim IsTruncated As String = xml.GetChildContent("IsTruncated")
Dim i As Int = 0
Dim count_i As Int = xml.NumChildrenHavingTag("Contents")
Do While i < count_i
    xml.I = i
    Key = xml.GetChildContent("Contents[i]|Key")
    LastModified = xml.GetChildContent("Contents[i]|LastModified")
    ETag = xml.GetChildContent("Contents[i]|ETag")
    SizeDecimalStr = xml.GetChildContent("Contents[i]|Size")
    ID = xml.GetChildContent("Contents[i]|Owner|ID")
    DisplayName = xml.GetChildContent("Contents[i]|Owner|DisplayName")
    StorageClass = xml.GetChildContent("Contents[i]|StorageClass")
    Log(i & ": " & Key)
    i = i + 1
Loop