Lua Requires Chilkat v9.5.0.78+

Glacier Download Archive

See more Amazon Glacier Examples

Demonstrates how to download an Amazon Glacier archive. Downloading a Glacier archive is a two step process. First an archive retrieval job is initiated. After it completes, the job output is downloaded (i.e. the archive contents are downloaded.) 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.
-- --------------------------------------------------------------------------

-- For more information, see Glacier Retrieve Job Output Reference Documentation
--
rest:add_header("x-amz-glacier-version", "2012-06-01")

-- To download an archive, we'll make several method calls:
-- 1) Send the HTTPS GET request.
-- 2) Get the response body.
-- 3) If the response status code indicates success, stream the response body (i.e the archive data) to a file.
-- 4) If the response status code indicates an error, get the JSON error response.

-- Send the GET request.
success = rest:send_req_no_body("GET", "/AWS_ACCOUNT_ID/vaults/chilkat/jobs/JOB_ID/output")
if not success then
    print(rest.last_error_text)
    return
end

-- Read the response header.
local responseStatusCode = rest:read_response_header()
if responseStatusCode < 0 then
    print(rest.last_error_text)
    return
end

print("Response status code = " .. responseStatusCode)

-- We expect a 200 response status if the archive data is coming.
-- Otherwise, we'll get a JSON response body with an error message(or no response body).
if responseStatusCode == 200 then
    local bodyStream = chilkat.Stream.new()

    -- The stream's sink will be a file.
    bodyStream.sink_file = "qa_output/archiveData.dat"

    -- Read the response body to the stream.
    success = rest:read_resp_body_stream(bodyStream, true)
    if not success then
        print(rest.last_error_text)
        return
    end

    print("Successfully received the archive file.")
else
    local jsonError = rest:read_resp_body_string()
    if not rest.last_method_success then
        print(rest.last_error_text)
    else
        print(jsonError)
    end
end