94 lines
2.6 KiB
TypeScript
Executable file
94 lines
2.6 KiB
TypeScript
Executable file
import { serve } from 'https://deno.land/std@0.131.0/http/server.ts'
|
|
import * as jose from 'https://deno.land/x/jose@v4.14.4/index.ts'
|
|
|
|
console.log('main function started')
|
|
|
|
const JWT_SECRET = Deno.env.get('JWT_SECRET')
|
|
const VERIFY_JWT = Deno.env.get('VERIFY_JWT') === 'true'
|
|
|
|
function getAuthToken(req: Request) {
|
|
const authHeader = req.headers.get('authorization')
|
|
if (!authHeader) {
|
|
throw new Error('Missing authorization header')
|
|
}
|
|
const [bearer, token] = authHeader.split(' ')
|
|
if (bearer !== 'Bearer') {
|
|
throw new Error(`Auth header is not 'Bearer {token}'`)
|
|
}
|
|
return token
|
|
}
|
|
|
|
async function verifyJWT(jwt: string): Promise<boolean> {
|
|
const encoder = new TextEncoder()
|
|
const secretKey = encoder.encode(JWT_SECRET)
|
|
try {
|
|
await jose.jwtVerify(jwt, secretKey)
|
|
} catch (err) {
|
|
console.error(err)
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
serve(async (req: Request) => {
|
|
if (req.method !== 'OPTIONS' && VERIFY_JWT) {
|
|
try {
|
|
const token = getAuthToken(req)
|
|
const isValidJWT = await verifyJWT(token)
|
|
|
|
if (!isValidJWT) {
|
|
return new Response(JSON.stringify({ msg: 'Invalid JWT' }), {
|
|
status: 401,
|
|
headers: { 'Content-Type': 'application/json' },
|
|
})
|
|
}
|
|
} catch (e) {
|
|
console.error(e)
|
|
return new Response(JSON.stringify({ msg: e.toString() }), {
|
|
status: 401,
|
|
headers: { 'Content-Type': 'application/json' },
|
|
})
|
|
}
|
|
}
|
|
|
|
const url = new URL(req.url)
|
|
const { pathname } = url
|
|
const path_parts = pathname.split('/')
|
|
const service_name = path_parts[1]
|
|
|
|
if (!service_name || service_name === '') {
|
|
const error = { msg: 'missing function name in request' }
|
|
return new Response(JSON.stringify(error), {
|
|
status: 400,
|
|
headers: { 'Content-Type': 'application/json' },
|
|
})
|
|
}
|
|
|
|
const servicePath = `/home/deno/functions/${service_name}`
|
|
console.error(`serving the request with ${servicePath}`)
|
|
|
|
const memoryLimitMb = 150
|
|
const workerTimeoutMs = 1 * 60 * 1000
|
|
const noModuleCache = false
|
|
const importMapPath = null
|
|
const envVarsObj = Deno.env.toObject()
|
|
const envVars = Object.keys(envVarsObj).map((k) => [k, envVarsObj[k]])
|
|
|
|
try {
|
|
const worker = await EdgeRuntime.userWorkers.create({
|
|
servicePath,
|
|
memoryLimitMb,
|
|
workerTimeoutMs,
|
|
noModuleCache,
|
|
importMapPath,
|
|
envVars,
|
|
})
|
|
return await worker.fetch(req)
|
|
} catch (e) {
|
|
const error = { msg: e.toString() }
|
|
return new Response(JSON.stringify(error), {
|
|
status: 500,
|
|
headers: { 'Content-Type': 'application/json' },
|
|
})
|
|
}
|
|
})
|