vane 0.9.0

A flow-based reverse proxy with multi-layer routing and programmable pipelines.
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#!/usr/bin/env lua

local cjson = require "cjson"

-- Safely read all content from Stdin
local function read_all_stdin()
	local lines = {}
	while true do
		local line = io.read()
		if line == nil then
			break
		end
		table.insert(lines, line)
	end
	return table.concat(lines, "\n")
end

-- --- Main Logic ---

-- Print debug info to Stderr (Vane logs this)
io.stderr:write "⚙ Starting execution...\n"

-- Read ResolvedInputs from Vane
local input_raw = read_all_stdin()
if input_raw == "" or input_raw == nil then
	io.stderr:write "✗ No input received on Stdin!\n"
	os.exit(1)
end

io.stderr:write("⚙ Received Input: " .. input_raw .. "\n")

-- 3. Parse JSON
local status, inputs = pcall(cjson.decode, input_raw)
if not status then
	io.stderr:write("✗ Invalid JSON: " .. inputs .. "\n")
	os.exit(1)
end

-- Business Logic
-- Assume Vane passes an argument "auth_token"
-- If token is "secret123", return success branch and write user info to KV
local output = {}

if inputs["auth_token"] == "secret123" then
	io.stderr:write "✓ Auth success!\n"
	output = {
		branch = "success",
		store = {
			["user_role"] = "admin",
			["verified"] = "true",
		},
	}
else
	io.stderr:write("✗ Auth failed. Token was: " .. tostring(inputs["auth_token"]) .. "\n")
	output = {
		branch = "failure",
		store = {
			["error_reason"] = "invalid_token",
		},
	}
end

-- Output result to Stdout (Must be compact JSON)
local output_json = cjson.encode(output)
io.write(output_json)

-- End