Lua Requires Chilkat v9.5.0.97+

OneDrive -- List Large Directory

See more OneDrive Examples

Demonstrates how to get the entire collection of DriveItem children when the collection is large and multiple pages need to be requested. To test this example, I created a DriveItem with 450 children. Lua

local chilkat = require("chilkat")

local success = false

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

-- This example uses the OAuth client credentials flow.
-- See How to Create an Azure App Registration for OAuth 2.0 Client Credentials

-- Use your client ID, client secret, and tenant ID in the following lines
local json = chilkat.JsonObject.new()
json:update_string("client_id", "2871da2c-8176-4b7f-869b-2311aa82e743")
json:update_string("client_secret", "2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH")
json:update_string("scope", "https://graph.microsoft.com/.default")
json:update_string("token_endpoint", "https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token")

local http = chilkat.Http.new()
http.auth_token = json:emit()

-- This example will get the DriveItems in /lots-of-files, which has 450 children..
http:set_url_var("item_path", "/lots-of-files")
http:set_url_var("user_id", "4fe732c3-322e-4a6b-b729-2fd1eb5c6104")

local resp = ""
local i = 0
local numItems = 0

json.emit_compact = false

-- This loop will download DriveItems in sets of 25 until no more exist.
local bGetMore = true
-- (Add the $top query parameter to define the page size, i.e. the max number of results to return).
local nextLink = "https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:{$item_path}:/children?$top=25"

while bGetMore do
    -- Get the next chunk of DriveItems
    resp = http:quick_get_str(nextLink)
    if not http.last_method_success then
        print(http.last_error_text)
        return
    end

    -- The response should be JSON.
    json:load(resp)

    -- A successful response should return a status code of 200.
    if http.last_status ~= 200 then
        print(json:emit())
        print("Response status = " .. http.last_status)
        return
    end

    -- Iterate over the DriveItems in the JSON response:
    i = 0
    numItems = json:size_of_array("value")
    while i < numItems do
        json.i = i
        print("name: " .. json:string_of("value[i].name"))
        i = i + 1
    end

    -- If a nextLink was included in the JSON, use it to get the next set of 50 DriveItems.
    -- Otherwise, exit the loop.
    if json:has_member("\"@odata.nextLink\"") then
        nextLink = json:string_of("\"@odata.nextLink\"")
        print("nextLink: " .. nextLink)
    else
        bGetMore = false
    end
end