service.lua

print "loaded"

local os = require("os")
local ld = require("launchdarkly_server_sdk")
local get_from_env_or_default = require("get_from_env_or_default")

-- Set MY_SDK_KEY to your LaunchDarkly SDK key.
local MY_SDK_KEY = ""

-- Set MY_FLAG_KEY to the boolean-type feature flag key you want to evaluate.
local MY_FLAG_KEY = ""

local config = {}
local sdk_key = get_from_env_or_default("LAUNCHDARKLY_SDK_KEY", MY_SDK_KEY)
local client = ld.clientInit(sdk_key, 1000, config)

local flag_key = get_from_env_or_default("LAUNCHDARKLY_FLAG_KEY", MY_FLAG_KEY)

core.register_service("launchdarkly", "http", function(applet)
    applet:start_response()

    local user = ld.makeContext({
        user =  {
            key = "example-user-key",
            name = "Sandy"
        }
    })

    local flag_value = client:boolVariation(user, flag_key, false)
    applet:send("<p>The " .. flag_key .. " feature flag evaluates to " .. tostring(flag_value) .. ".</p>")
end)