(PowerShell) Backblaze S3 List Bucket Objects

See more Backblaze S3 Examples

Demonstrates how to list the objects in a bucket.

The Chilkat S3 functions in the HTTP class are compatible with the Backblaze service. However, because of some specific issues, Chilkat v9.5.0.89 or later is needed.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

$http = New-Object Chilkat.Http

# keyID = Access Key ID or Access Key
$http.AwsAccessKey = "access-key"

# applicationKey = Secret Access Key or Secret Key
$http.AwsSecretKey = "secret-key"

# Region is the 2nd part of your S3 Endpoint
$http.AwsEndpoint = "s3.us-west-002.backblazeb2.com"

$bucketName = "chilkat-test"

$strXml = $http.S3_ListBucketObjects($bucketName)
if ($http.LastMethodSuccess -ne $true) {
    $($http.LastErrorText)
    exit
}

$("Response status code = " + $http.LastStatus)

$xml = New-Object Chilkat.Xml
$success = $xml.LoadXml($strXml)
if ($success -ne $true) {
    $($xml.LastErrorText)
    exit
}

# 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 -ne 200) {
    $($xml.GetXml())
    $("Failed.")
    exit
}

# A sample response is shown below.
$($xml.GetXml())
$("----")

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

# <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
# <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
#     <Contents>
#         <ETag>"303fb46cf341094fef6274b7789cd6aa"</ETag>
#         <Key>orchard.json</Key>
#         <LastModified>2021-10-30T14:45:52.000Z</LastModified>
#         <Owner>
#             <ID>f2ebbc5f792c</ID>
#             <DisplayName/>
#         </Owner>
#         <Size>22</Size>
#         <StorageClass>STANDARD</StorageClass>
#     </Contents>
#     <Contents>
#         <ETag>"a8551f0a5437f43a796fca7623ee9232"</ETag>
#         <Key>seahorse.jpg</Key>
#         <LastModified>2021-10-30T14:38:53.000Z</LastModified>
#         <Owner>
#             <ID>f2ebbc5f792c</ID>
#             <DisplayName/>
#         </Owner>
#         <Size>24388</Size>
#         <StorageClass>STANDARD</StorageClass>
#     </Contents>
#     <IsTruncated>false</IsTruncated>
#     <MaxKeys>1000</MaxKeys>
#     <Name>chilkat-test</Name>
#     <Prefix/>
#     <Marker/>
# </ListBucketResult>

$ListBucketResult_xmlns = $xml.GetAttrValue("xmlns")
$i = 0
$count_i = $xml.NumChildrenHavingTag("Contents")
while ($i -lt $count_i) {
    $xml.I = $i
    $ETag = $xml.GetChildContent("Contents[i]|ETag")
    $Key = $xml.GetChildContent("Contents[i]|Key")
    $LastModified = $xml.GetChildContent("Contents[i]|LastModified")
    $ID = $xml.GetChildContent("Contents[i]|Owner|ID")
    $SizeDecimalStr = $xml.GetChildContent("Contents[i]|Size")
    $StorageClass = $xml.GetChildContent("Contents[i]|StorageClass")
    $i = $i + 1
}

$IsTruncated = $xml.GetChildContent("IsTruncated")
$MaxKeys = $xml.GetChildIntValue("MaxKeys")
$Name = $xml.GetChildContent("Name")