Lua

Azure Blob Service - List all Containers in a Storage Account

See more Azure Cloud Storage Examples

Azure Storage Blob Service REST API: Lists all the containers in a storage account. Lua

local chilkat = require("chilkat")

-- Azure Blob Service Example: List all of the containers in an account.

-- 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 Azure Storage Blob Service
local bTls = true
local port = 443
local bAutoReconnect = true
-- In this example, the storage account name is "chilkat".
local success = rest:connect("chilkat.blob.core.windows.net", port, bTls, bAutoReconnect)
if not success then
    print(rest.last_error_text)
    return
end

-- Provide Azure Cloud credentials for the REST call.
local azAuth = chilkat.AuthAzureStorage.new()
azAuth.access_key = "AZURE_ACCESS_KEY"
-- The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.account = "chilkat"
azAuth.scheme = "SharedKey"
azAuth.service = "Blob"
-- This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.xms_version = "2021-08-06"
success = rest:set_auth_azure_storage(azAuth)

-- URI parameters, such as "maxresults", are added by calling AddQueryParam
success = rest:add_query_param("maxresults", "1000")

-- Note: The application does not need to explicitly set the following
-- headers: x-ms-date, Authorization.  These headers
-- are automatically set by Chilkat.

local responseStr = rest:full_request_no_body("GET", "/?comp=list")
if not rest.last_method_success then
    print(rest.last_error_text)
    return
end

-- When successful, the Azure Storage service will respond with a 200 response code,
-- with an XML body.
if rest.response_status_code ~= 200 then
    -- Examine the request/response to see what happened.
    print("response status code = " .. rest.response_status_code)
    print("response status text = " .. rest.response_status_text)
    print("response header: " .. rest.response_header)
    print("response body (if any): " .. responseStr)
    print("---")
    print("LastRequestStartLine: " .. rest.last_request_start_line)
    print("LastRequestHeader: " .. rest.last_request_header)
    return
end

-- Load the XML response for parsing.
-- A sample XML response containing 2 containers is shown below.
local xml = chilkat.Xml.new()
success = xml:load_xml(responseStr)

print(xml:get_xml())

-- Iterate over the containers, listing some information about each.
success = xml:find_child2("Containers")
local numContainers = xml.num_children
local i = 0
while i < numContainers do
    success = xml:get_child2(i)
    print("Container Name: " .. xml:get_child_content("Name"))
    local lastModDateStr = xml:chilkat_path("Properties|Last-Modified|*")
    print("Last Modified: " .. lastModDateStr)
    -- The date/time string can be loaded into a CkDateTime object for conversion to other date formats..
    local dateTime = chilkat.DateTime.new()
    success = dateTime:set_from_rfc822(lastModDateStr)

    local leaseState = xml:chilkat_path("Properties|LeaseState|*")
    print("Lease State: " .. leaseState)

    success = xml:get_parent2()
    i = i + 1
end

success = xml:get_parent2()

-- Sample XML response:

--     <?xml version="1.0" encoding="utf-8" ?>
--     <EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/">
--         <MaxResults>1000</MaxResults>
--         <Containers>
--             <Container>
--                 <Name>test</Name>
--                 <Properties>
--                     <Last-Modified>Wed, 20 Apr 2016 01:02:25 GMT</Last-Modified>
--                     <Etag>"0x8D368B77024C583"</Etag>
--                     <LeaseStatus>unlocked</LeaseStatus>
--                     <LeaseState>available</LeaseState>
--                 </Properties>
--             </Container>
--             <Container>
--                 <Name>test2</Name>
--                 <Properties>
--                     <Last-Modified>Tue, 03 May 2016 17:13:01 GMT</Last-Modified>
--                     <Etag>"0x8D373762EB6AC85"</Etag>
--                     <LeaseStatus>unlocked</LeaseStatus>
--                     <LeaseState>available</LeaseState>
--                 </Properties>
--             </Container>
--         </Containers>
--         <NextMarker />
--     </EnumerationResults>