Lua
Lua
Azure Storage: List Blobs
See more Azure Cloud Storage Examples
Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.Chilkat Lua Downloads
local chilkat = require("chilkat")
-- Azure Blob Service Example: List the blobs in a specified container.
-- See also: https://msdn.microsoft.com/en-us/library/azure/dd135734.aspx
-- 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)
-- Note: The application does not need to explicitly set the following
-- headers: x-ms-date, Authorization. These headers
-- are automatically set by Chilkat.
-- The expected success response is a 200 response status code with an XML response body.
-- In this example, we are listing the blobs in the container named "mycontainer".
local responseStr = rest:full_request_no_body("GET", "/mycontainer?restype=container&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 status code,
-- with an XML response 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.
-- An example of the response XML is shown below.
local xml = chilkat.Xml.new()
success = xml:load_xml(responseStr)
print(xml:get_xml())
-- Let's iterate over the blobs...
local lastMod = chilkat.DateTime.new()
local numBlobs = xml:num_children_at("Blobs")
local i = 0
local dt = chilkat.DtObj.new()
while i < numBlobs do
print("---- Blob " .. i .. " ----")
xml.i = i
print("Name: " .. xml:get_child_content("Blobs|Blob[i]|Name"))
print("Content-Length: " .. xml:get_child_content("Blobs|Blob[i]|Properties|Content-Length"))
print("Content-Type: " .. xml:get_child_content("Blobs|Blob[i]|Properties|Content-Type"))
print("Content-MD5: " .. xml:get_child_content("Blobs|Blob[i]|Properties|Content-MD5"))
print("BlobType: " .. xml:get_child_content("Blobs|Blob[i]|Properties|BlobType"))
print("LeaseStatus: " .. xml:get_child_content("Blobs|Blob[i]|Properties|LeaseStatus"))
lastMod:set_from_rfc822(xml:get_child_content("Blobs|Blob[i]|Properties|Last-Modified"))
lastMod:to_dt_obj(true, dt)
print("Last-Modified YMD: " .. dt.year .. "," .. dt.month .. "," .. dt.day)
i = i + 1
end
print("-------------------------")
-- Use the ChilkatPath method to get information for a specific blob:
-- For example, let's say we want the Last-Modified date/time for
-- the blob named "helloWorld.txt"
local lastModStr = xml:chilkat_path("/C/Name,helloWorld.txt|..|Properties|Last-Modified|*")
print("helloWorld.txt Last-Modified: " .. lastModStr)
print("Success.")
-- <?xml version="1.0" encoding="utf-8" ?>
-- <EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/" ContainerName="test">
-- <Blobs>
-- <Blob>
-- <Name>hamletC.xml</Name>
-- <Properties>
-- <Last-Modified>Mon, 02 May 2016 23:50:30 GMT</Last-Modified>
-- <Etag>0x8D372E48B6D323A</Etag>
-- <Content-Length>279658</Content-Length>
-- <Content-Type>application/octet-stream</Content-Type>
-- <Content-Encoding />
-- <Content-Language />
-- <Content-MD5>4E6prI9haw81xadSLeEj3Q==</Content-MD5>
-- <Cache-Control />
-- <Content-Disposition>attachment; filename="hamletC.xml"</Content-Disposition>
-- <BlobType>BlockBlob</BlobType>
-- <LeaseStatus>unlocked</LeaseStatus>
-- <LeaseState>available</LeaseState>
-- </Properties>
-- </Blob>
-- <Blob>
-- <Name>helloWorld.txt</Name>
-- <Properties>
-- <Last-Modified>Mon, 02 May 2016 15:21:55 GMT</Last-Modified>
-- <Etag>0x8D3729D7EE38299</Etag>
-- <Content-Length>12</Content-Length>
-- <Content-Type>application/octet-stream</Content-Type>
-- <Content-Encoding />
-- <Content-Language />
-- <Content-MD5>7Qdih1MuhjZehB6Sv8UNjA==</Content-MD5>
-- <Cache-Control />
-- <Content-Disposition>attachment; filename="helloWorld.txt"</Content-Disposition>
-- <BlobType>BlockBlob</BlobType>
-- <LeaseStatus>unlocked</LeaseStatus>
-- <LeaseState>available</LeaseState>
-- </Properties>
-- </Blob>
-- <Blob>
-- <Name>thisIsATest.txt</Name>
-- <Properties>
-- <Last-Modified>Tue, 03 May 2016 00:22:13 GMT</Last-Modified>
-- <Etag>0x8D372E8F9B2A62E</Etag>
-- <Content-Length>1600</Content-Length>
-- <Content-Type>application/octet-stream</Content-Type>
-- <Content-Encoding />
-- <Content-Language />
-- <Content-MD5>FhgUXYfePg2ItsraPmz0Xg==</Content-MD5>
-- <Cache-Control />
-- <Content-Disposition>attachment; filename="thisIsATest.txt"</Content-Disposition>
-- <BlobType>BlockBlob</BlobType>
-- <LeaseStatus>unlocked</LeaseStatus>
-- <LeaseState>available</LeaseState>
-- </Properties>
-- </Blob>
-- </Blobs>
-- <NextMarker />
-- </EnumerationResults>
--