(Tcl) S3 List Bucket Objects (using Chilkat REST)

Demonstrates how to fetch a list of objects in an S3 bucket.

Chilkat Tcl Extension Downloads Chilkat Tcl Extension Downloads

load ./chilkat.dll

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

set rest [new_CkRest]

# Connect to the Amazon AWS REST server.
set bTls 1
set port 443
set bAutoReconnect 1
set success [CkRest_Connect $rest "s3.amazonaws.com" $port $bTls $bAutoReconnect]

# ----------------------------------------------------------------------------
# Important: For buckets created in regions outside us-east-1,
# there are three important changes that need to be made.
# See Working with S3 Buckets in Non-us-east-1 Regions for the details.
# ----------------------------------------------------------------------------

# Provide AWS credentials for the REST call.
set authAws [new_CkAuthAws]

CkAuthAws_put_AccessKey $authAws "AWS_ACCESS_KEY"
CkAuthAws_put_SecretKey $authAws "AWS_SECRET_KEY"
CkAuthAws_put_ServiceName $authAws "s3"
set success [CkRest_SetAuthAws $rest $authAws]

#  Set the bucket name via the HOST header.
#  In this case, the bucket name is "chilkat100".
CkRest_put_Host $rest "chilkat100.s3.amazonaws.com"

set sbResponse [new_CkStringBuilder]

set success [CkRest_FullRequestNoBodySb $rest "GET" "/" $sbResponse]
if {$success != 1} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkRest $rest
    delete_CkAuthAws $authAws
    delete_CkStringBuilder $sbResponse
    exit
}

set statusCode [CkRest_get_ResponseStatusCode $rest]
puts "Response status code = $statusCode"

set xml [new_CkXml]

CkXml_LoadSb $xml $sbResponse 1
puts [CkXml_getXml $xml]

if {$statusCode != 200} then {
    puts "Failed.  See error information in the XML."
    delete_CkRest $rest
    delete_CkAuthAws $authAws
    delete_CkStringBuilder $sbResponse
    delete_CkXml $xml
    exit
}

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

set Name [CkXml_getChildContent $xml "Name"]
set MaxKeys [CkXml_GetChildIntValue $xml "MaxKeys"]
set IsTruncated [CkXml_getChildContent $xml "IsTruncated"]
set i 0
set count_i [CkXml_NumChildrenHavingTag $xml "Contents"]
while {$i < $count_i} {
    CkXml_put_I $xml $i
    set Key [CkXml_getChildContent $xml "Contents[i]|Key"]
    set LastModified [CkXml_getChildContent $xml "Contents[i]|LastModified"]
    set ETag [CkXml_getChildContent $xml "Contents[i]|ETag"]
    set SizeDecimalStr [CkXml_getChildContent $xml "Contents[i]|Size"]
    set ID [CkXml_getChildContent $xml "Contents[i]|Owner|ID"]
    set DisplayName [CkXml_getChildContent $xml "Contents[i]|Owner|DisplayName"]
    set StorageClass [CkXml_getChildContent $xml "Contents[i]|StorageClass"]
    set i [expr $i + 1]
}

delete_CkRest $rest
delete_CkAuthAws $authAws
delete_CkStringBuilder $sbResponse
delete_CkXml $xml