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(Tcl) Amazon Glacier Upload Archive from In-Memory Data

Demonstrates how to add an archive to a vault from data in memory.

Note: This example requires Chilkat v9.5.0.78 or greater.

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 in the desired region.
set bTls 1
set port 443
set bAutoReconnect 1
set success [CkRest_Connect $rest "glacier.us-west-2.amazonaws.com" $port $bTls $bAutoReconnect]

# Provide AWS credentials.
set authAws [new_CkAuthAws]

CkAuthAws_put_AccessKey $authAws "AWS_ACCESS_KEY"
CkAuthAws_put_SecretKey $authAws "AWS_SECRET_KEY"
CkAuthAws_put_ServiceName $authAws "glacier"
CkAuthAws_put_Region $authAws "us-west-2"

set success [CkRest_SetAuthAws $rest $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.
# --------------------------------------------------------------------------

# Load the data to be uploaded.
set bd [new_CkBinData]

set success [CkBinData_LoadFile $bd "qa_data/jpg/penguins.jpg"]
# (The point here is that the contents of the bd don't necessarily have to come from a file.)

# 
# For more information, see Glacier Upload Archive Reference Documentation
# 
CkRest_AddHeader $rest "x-amz-glacier-version" "2012-06-01"

# We'll need to pre-compute the SHA256 tree hash and the SHA256 linear hash.
# The hashes are added in the following request headers:

# x-amz-sha256-tree-hash: SHA256 tree hash
# x-amz-content-sha256: SHA256 linear hash

set crypt [new_CkCrypt2]

CkCrypt2_put_HashAlgorithm $crypt "sha256-tree-hash"
CkCrypt2_put_EncodingMode $crypt "hexlower"
set treeHashHex [CkCrypt2_hashBdENC $crypt $bd]
CkRest_AddHeader $rest "x-amz-sha256-tree-hash" $treeHashHex

CkCrypt2_put_HashAlgorithm $crypt "sha256"
set linearHashHex [CkCrypt2_hashBdENC $crypt $bd]
CkAuthAws_put_PrecomputedSha256 $authAws $linearHashHex

# We can optionally add a description
CkRest_AddHeader $rest "x-amz-archive-description" "Penguins JPG"

set sbResponseBody [new_CkStringBuilder]

set success [CkRest_FullRequestBd $rest "POST" "/AWS_ACCOUNT_ID/vaults/chilkat/archives" $bd $sbResponseBody]
if {[expr $success != 1]} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkRest $rest
    delete_CkAuthAws $authAws
    delete_CkBinData $bd
    delete_CkCrypt2 $crypt
    delete_CkStringBuilder $sbResponseBody
    exit
}

set respStatusCode [CkRest_get_ResponseStatusCode $rest]
if {[expr $respStatusCode >= 400]} then {
    puts "Response Status Code = $respStatusCode"
    puts "Response Header:"
    puts [CkRest_responseHeader $rest]
    puts "Response Body:"
    puts [CkStringBuilder_getAsString $sbResponseBody]
    delete_CkRest $rest
    delete_CkAuthAws $authAws
    delete_CkBinData $bd
    delete_CkCrypt2 $crypt
    delete_CkStringBuilder $sbResponseBody
    exit
}

# Success is indicated by a 201 response status with an empty response body.
puts "response status code = $respStatusCode"

# If successful, the response header looks like this.
# The Location and x-amz-archive-id are two items of information we may wish to save..

# HTTP/1.1 201 Created
# x-amzn-RequestId: AAABZpJrTyioDC_HsOmHae8EZp_uBSJr6cnGOLKp_XJCl-Q
# Date: Wed, 10 Feb 2017 12:00:00 GMT
# x-amz-sha256-tree-hash: beb0fe31a1c7ca8c6c04d574ea906e3f97b31fdca7571defb5b44dca89b5af60
# Location: /111122223333/vaults/examplevault/archives/NkbByEejwEggmBz2fTH ... GlqrEXAMPLEArchiveId
# x-amz-archive-id: NkbByEejwEggmBz2fTHgJrg0XBoDfjP4q6iu87-TjhqG6eGoOY9Z8i1_AUyUsu ... BfGlqrEXAMPLEArchiveId
# 

set archiveId [CkRest_responseHdrByName $rest "x-amz-archive-id"]
puts "x-amz-archive-id = $archiveId"

set location [CkRest_responseHdrByName $rest "Location"]
puts "Location = $location"

delete_CkRest $rest
delete_CkAuthAws $authAws
delete_CkBinData $bd
delete_CkCrypt2 $crypt
delete_CkStringBuilder $sbResponseBody

 

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