Lua Requires Chilkat v9.5.0.78+

Amazon Glacier Upload Archive from In-Memory Data

See more Amazon Glacier Examples

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

local chilkat = require("chilkat")

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

local rest = chilkat.Rest.new()

-- Connect to the Amazon AWS REST server in the desired region.
local bTls = true
local port = 443
local bAutoReconnect = true
local success = rest:connect("glacier.us-west-2.amazonaws.com", port, bTls, bAutoReconnect)

-- Provide AWS credentials.
local authAws = chilkat.AuthAws.new()
authAws.access_key = "AWS_ACCESS_KEY"
authAws.secret_key = "AWS_SECRET_KEY"
authAws.service_name = "glacier"
authAws.region = "us-west-2"

success = rest:set_auth_aws(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.
local bd = chilkat.BinData.new()
success = bd:load_file("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
--
rest:add_header("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

local crypt = chilkat.Crypt2.new()
crypt.hash_algorithm = "sha256-tree-hash"
crypt.encoding_mode = "hexlower"
local treeHashHex = crypt:hash_bd_enc(bd)
rest:add_header("x-amz-sha256-tree-hash", treeHashHex)

crypt.hash_algorithm = "sha256"
local linearHashHex = crypt:hash_bd_enc(bd)
authAws.precomputed_sha256 = linearHashHex

-- We can optionally add a description
rest:add_header("x-amz-archive-description", "Penguins JPG")

local sbResponseBody = chilkat.StringBuilder.new()
success = rest:full_request_bd("POST", "/AWS_ACCOUNT_ID/vaults/chilkat/archives", bd, sbResponseBody)
if not success then
    print(rest.last_error_text)
    return
end

local respStatusCode = rest.response_status_code
if respStatusCode >= 400 then
    print("Response Status Code = " .. respStatusCode)
    print("Response Header:")
    print(rest.response_header)
    print("Response Body:")
    print(sbResponseBody:get_as_string())
    return
end

-- Success is indicated by a 201 response status with an empty response body.
print("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
--

local archiveId = rest:response_hdr_by_name("x-amz-archive-id")
print("x-amz-archive-id = " .. archiveId)

local location = rest:response_hdr_by_name("Location")
print("Location = " .. location)