diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/api.js | 140 | ||||
| -rw-r--r-- | lib/contracts.js | 26 | ||||
| -rw-r--r-- | lib/priority_queue.js | 39 | ||||
| -rw-r--r-- | lib/ships.js | 187 | ||||
| -rw-r--r-- | lib/systems.js | 68 |
5 files changed, 0 insertions, 460 deletions
diff --git a/lib/api.js b/lib/api.js deleted file mode 100644 index 667ef37..0000000 --- a/lib/api.js +++ /dev/null @@ -1,140 +0,0 @@ -import * as fs from 'fs'; -import * as events from 'events'; - -import { getToken } from '../database/config.js'; -import { PriorityQueue } from './priority_queue.js'; - -// queue processor module variables -const bus = new events.EventEmitter(); // a bus to notify the queue processor to start processing messages -let busy = false; // true if we are already sending api requests. -let backoffSeconds = 0; -let running = false; -// other module variables -let headers = undefined; // a file scope variable so that we only evaluate these once. -let queue = new PriorityQueue(); // a priority queue to hold api calls we want to send, allows for throttling. - -// a single queue processor should be running at any time, otherwise there will be trouble! -async function queue_processor() { - if (running) { - throw 'refusing to start a second queue processor'; - } - running = true; - while(true) { - try { - if (backoffSeconds > 0) { - await sleep(backoffSeconds * 1000); - backoffSeconds = 0; - } - if (queue.isEmpty()) { - busy = false; - await new Promise(resolve => bus.once('send', resolve)); - busy = true; - } - const before = new Date(); - await send_this(queue.dequeue().element); - const duration = new Date() - before; - if (duration < 400) { // 333 should work, but 400 should still allow some manual requests to go through during development - await sleep(400 - duration); - } - } catch (e) { - running = false; - throw e; - } - } -} -queue_processor(); - -// send takes a request object as argument and an optional context ctx -// example request: { -// endpoint: the path part of the url to call, -// method: HTTP method for `fetch` call, defaults to 'GET', -// payload: optional json object that will be send along with the request, -// priority: optional priority value (defaults to 10, lower than 10 means the message will be sent faster) -// } -export function send(request, ctx) { - return new Promise((resolve, reject) => { - let data = { - ctx: ctx, - reject: reject, - request: request, - resolve: resolve, - }; - queue.enqueue(data, request.priority ? request.priority : 10); - if (!busy) { - bus.emit('send'); // the queue was previously empty, let's wake up the queue_processor - } - }); -} - -// send_this take a data object as argument built in the send function above -async function send_this(data) { - if (headers === undefined) { - const token = getToken(); - if (token === null) { - throw 'Could not get token from the database. Did you init or register yet?'; - } - headers = { - 'Content-Type': 'application/json', - 'Authorization': `Bearer ${token}` - }; - } - let options = { - headers: headers, - }; - if (data.request.method !== undefined) { - options['method'] = data.request.method; - } - if (data.request.payload !== undefined) { - options['body'] = JSON.stringify(data.request.payload); - } - fs.writeFileSync('log', JSON.stringify({event: 'send', date: new Date(), data: data}) + '\n', {flag: 'a+'}); - try { - let response = await fetch(`https://api.spacetraders.io/v2${data.request.endpoint}`, options); - response = await response.json(); - switch(response.error?.code) { - //case 401: // TODO 401 means a server reset happened - // TODO reject all promises in queue - // close database file - // rm database file - // logrotate - // spawnSync - // break; - case 429: // 429 means rate limited, let's hold back as instructed - backoffSeconds = response.error.data.retryAfter; - queue.enqueue(data, 1); - break; - case 503: // 503 means maintenance mode, let's hold back for 1 minute - backoffSeconds = 60; - queue.enqueue(data, 1); - break; - default: // no error! - fs.writeFileSync('log', JSON.stringify({event: 'response', date: new Date(), data: response}) + '\n', {flag: 'a+'}); - return data.resolve(response); - } - } catch (err) { - fs.writeFileSync('log', JSON.stringify({event: 'error', date: new Date(), data: err}) + '\n', {flag: 'a+'}); - switch(err.cause?.code) { - case 'EAI_AGAIN': // DNS lookup timed out error, let's hold back for 5 seconds - backoffSeconds = 5; - queue.enqueue(data, 1); - break; - case 'ECONNRESET': - queue.enqueue(data, 1); - break; - case 'UND_ERR_CONNECT_TIMEOUT': - queue.enqueue(data, 1); - break; - default: - data.reject(response); - } - } -} - -export function debugLog(ctx) { - console.log(`--- ${Date()} -----------------------------------------------------------------------------`); - console.log(JSON.stringify(ctx, null, 2)); -} - -export function sleep(delay) { - return new Promise((resolve) => setTimeout(resolve, delay)) -} diff --git a/lib/contracts.js b/lib/contracts.js deleted file mode 100644 index 316e181..0000000 --- a/lib/contracts.js +++ /dev/null @@ -1,26 +0,0 @@ -import * as api from './api.js'; -import * as dbShips from '../database/ships.js'; - -export async function accept(ctx) { - return await api.send({endpoint: `/my/contracts/${ctx.contract}/accept`, method: 'POST'}); -} - -export async function contracts() { - return await api.send({endpoint: '/my/contracts'}); -} - -export async function deliver(ctx) { - const response = await api.send({ endpoint: `/my/contracts/${ctx.contract}/deliver`, method: 'POST', payload: { - shipSymbol: ctx.symbol, - tradeSymbol: ctx.good, - units: ctx.units, - }}); - if (response.error !== undefined) { - throw response; - } - dbShips.setShipCargo(ctx.symbol, response.data.cargo); -} - -export async function fulfill(ctx) { - return await api.send({ endpoint: `/my/contracts/${ctx.contract}/fulfill`, method: 'POST'}); -} diff --git a/lib/priority_queue.js b/lib/priority_queue.js deleted file mode 100644 index da526b2..0000000 --- a/lib/priority_queue.js +++ /dev/null @@ -1,39 +0,0 @@ -export class QElement { - constructor(element, priority) { - this.element = element; - this.priority = priority; - } -} - -export class PriorityQueue { - constructor(elt) { - this.items = []; - if (elt !== undefined) { - this.enqueue(elt, 0); - } - } - - enqueue(element, priority) { - let qElement = new QElement(element, priority); - - for (let i = 0; i < this.items.length; ++i) { - if (this.items[i].priority > qElement.priority) { - this.items.splice(i, 0, qElement); - return; - } - } - this.items.push(qElement); - } - dequeue() { - return this.items.shift(); // we would use pop to get the highest priority, shift() gives us the lowest priority - } - front() { - return this.items[0]; - } - rear() { - return this.items[this.items.length - 1]; - } - isEmpty() { - return this.items.length === 0; - } -} diff --git a/lib/ships.js b/lib/ships.js deleted file mode 100644 index d75d78e..0000000 --- a/lib/ships.js +++ /dev/null @@ -1,187 +0,0 @@ -import * as api from './api.js'; -import * as dbConfig from '../database/config.js'; -import * as dbShips from '../database/ships.js'; -import * as dbSurveys from '../database/surveys.js'; -import * as systems from '../lib/systems.js'; - -export async function extract(ctx) { - const ship = dbShips.getShip(ctx.symbol); - const asteroidFields = await systems.type({symbol: ship.nav.systemSymbol, type: 'ASTEROID_FIELD'}); - // TODO if there are multiple fields, find the closest one? - await navigate({symbol: ctx.symbol, waypoint: asteroidFields[0].symbol}); - await orbit(ctx); - // TODO handle surveying? - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/extract`, method: 'POST'}); - if (response.error !== undefined) { - switch(response.error.code) { - case 4000: // ship is on cooldown - await api.sleep(response.error.data.cooldown.remainingSeconds * 1000); - return await extract(ctx); - case 4228: // ship is full - return null; - default: // yet unhandled error - throw response; - } - } else { - dbShips.setShipCargo(ctx.symbol, response.data.cargo); - await api.sleep(response.data.cooldown.remainingSeconds*1000); - } - return response; -} - -export async function dock(ctx) { - const ship = dbShips.getShip(ctx.symbol); - if (ship.nav.status === 'DOCKED') { - return null; - } - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/dock`, method: 'POST'}); - if (response.error !== undefined) { - switch(response.error.code) { - case 4214: // ship is in transit - await api.sleep(response.error.data.secondsToArrival * 1000); - return await dock(ctx); - default: // yet unhandled error - throw response; - } - } - dbShips.setShipNav(ctx.symbol, response.data.nav); - return response; -} - -function hasMount(shipSymbol, mountSymbol) { - const ship = dbShips.getShip(shipSymbol); - return ship.mounts.filter(s => s.symbol === mountSymbol).length > 0; -} - -export async function jump(ctx) { - // TODO - const response = await api.send({endpoint: `/my/ships/${ctx.ship}/jump`, method: 'POST', payload: { systemSymbol: ctx.system }}); - await api.sleep(response.data.cooldown.remainingSeconds*1000); - return response; -} - -export async function navigate(ctx) { - const ship = dbShips.getShip(ctx.symbol); - if (ship.nav.waypointSymbol === ctx.waypoint) { - return await orbit(ctx); - } - await orbit(ctx); - // TODO if we do not have enough fuel, make a stop to refuel along the way or drift to the destination - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/navigate`, method: 'POST', payload: { waypointSymbol: ctx.waypoint }}); - if (response.error !== undefined) { - switch(response.error.code) { - case 4214: // ship is in transit - await api.sleep(response.error.data.secondsToArrival * 1000); - return await navigate(ctx); - default: // yet unhandled error - throw response; - } - } - dbShips.setShipFuel(ctx.symbol, response.data.fuel); - dbShips.setShipNav(ctx.symbol, response.data.nav); - const delay = new Date(response.data.nav.route.arrival) - new Date(); - await api.sleep(delay); - response.data.nav.status = 'IN_ORBIT'; - dbShips.setShipNav(ctx.symbol, response.data.nav); - await refuel(ctx); - return response; -} - -export async function negotiate(ctx) { - // TODO - return await api.send({endpoint: `/my/ships/${ctx.ship}/negotiate/contract`, method: 'POST'}); -} - -export async function orbit(ctx) { - const ship = dbShips.getShip(ctx.symbol); - if (ship.nav.status === 'IN_ORBIT') { - return null; - } - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/orbit`, method: 'POST'}); - if (response.error !== undefined) { - switch(response.error.code) { - case 4214: // ship is in transit - await api.sleep(response.error.data.secondsToArrival * 1000); - return await orbit(ctx); - default: // yet unhandled error - throw response; - } - } - dbShips.setShipNav(ctx.symbol, response.data.nav); - return response; -} - -export async function purchase(ctx) { - const response = await api.send({endpoint: '/my/ships', method: 'POST', payload: { - shipType: ctx.shipType, - waypointSymbol: ctx.waypoint, - }}); - if (response.error !== undefined) { - throw response; - } - dbShips.setShip(response.data.ship); - return response.data; -} - -export async function refuel(ctx) { - const ship = dbShips.getShip(ctx.symbol); - if (ship.fuel.current >= ship.fuel.capacity * 0.9) { - return null; - } - // TODO check if our current waypoint has a marketplace (and sells fuel)? - await dock(ctx); - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/refuel`, method: 'POST'}); - if (response.error !== undefined) { - throw response; - } - dbShips.setShipFuel(ctx.symbol, response.data.fuel); - // TODO track credits - return response; -} - -export async function sell(ctx) { - // TODO check if our current waypoint has a marketplace (and sells fuel)? - await dock(ctx); - const ship = dbShips.getShip(ctx.symbol); - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/sell`, method: 'POST', payload: { symbol: ctx.good, units: ctx.units }}); - if (response.error !== undefined) { - throw response; - } - dbShips.setShipCargo(ctx.symbol, response.data.cargo); - // TODO track credits - return response; -} - -export async function ship(ctx) { - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}`}); - if (response.error !== undefined) { - throw response; - } - dbShips.setShip(response.data); - return response; -} - -export async function survey(ctx) { - if (!hasMount(ctx.symbol, 'MOUNT_SURVEYOR_I')) { // we check if a surveyor is mounted on the ship - return null; - } - const ship = dbShips.getShip(ctx.symbol); - const asteroidFields = await systems.type({symbol: ship.nav.systemSymbol, type: 'ASTEROID_FIELD'}); - // TODO if there are multiple fields, find the closest one? - await navigate({symbol: ctx.symbol, waypoint: asteroidFields[0].symbol}); - await orbit(ctx); - const response = await api.send({endpoint: `/my/ships/${ctx.symbol}/survey`, method: 'POST'}); - api.debugLog(response); - if (response.error !== undefined) { - switch(response.error.code) { - case 4000: // ship is on cooldown - await api.sleep(response.error.data.cooldown.remainingSeconds * 1000); - return await survey(ctx); - default: // yet unhandled error - throw response; - } - } - dbSurveys.set(response.data.surveys[0]); - await api.sleep(response.data.cooldown.remainingSeconds*1000); - return response; -} diff --git a/lib/systems.js b/lib/systems.js deleted file mode 100644 index e03da6c..0000000 --- a/lib/systems.js +++ /dev/null @@ -1,68 +0,0 @@ -import * as api from './api.js'; -import * as db from '../database/systems.js'; - -// Retrieves a shipyard's information for ctx.symbol -export async function shipyard(ctx) { - const systemSymbol = ctx.symbol.match(/([^-]+-[^-]+)/)[1]; // TODO generalise this extraction - console.log(systemSymbol); - return await api.send({endpoint: `/systems/${systemSymbol}/waypoints/${ctx.symbol}/shipyard`}); -} - -// Retrieves the system's information for ctx.symbol and caches it in the database -export async function system(ctx) { - let s = db.getSystem(ctx.symbol); - if (s === null) { - const response = await api.send({endpoint: `/systems/${ctx.symbol}`}); - if (response.error !== undefined) { - switch(response.error.code) { - case 404: - throw `Error retrieving info for system ${ctx.symbol}: ${response.error.message}`; - default: // yet unhandled error - throw response; - } - } - s = response.data; - db.setSystem(s); - } - return s; -} - -// Retrieves a list of waypoints that have a specific ctx.trait like a SHIPYARD or a MARKETPLACE in the system ctx.symbol -export async function trait(ctx) { - const w = await waypoints(ctx); - return w.filter(s => s.traits.some(t => t.symbol === ctx.trait)); -} - -// Retrieves a list of waypoints that have a specific ctx.type like ASTEROID_FIELD in the system ctx.symbol -export async function type(ctx, response) { - const w = await waypoints(ctx); - return w.filter(s => s.type === ctx.type); -} - -// Retrieves the system's information for ctx.symbol and caches it in the database -export async function waypoints(ctx) { - await system(ctx); - let updated = db.getSystemUpdated(ctx.symbol); - // TODO handle uncharted systems - if (updated === null) { - let waypoints = []; - for (let page=1; true; ++page) { - const response = await api.send({endpoint: `/systems/${ctx.symbol}/waypoints?limit=20&page=${page}`, priority: 98}); - if (response.error !== undefined) { - switch(response.error.code) { - case 404: - throw `Error retrieving waypoints for system ${ctx.symbol}: ${response.error.message}`; - default: // yet unhandled error - throw response; - } - } - waypoints = waypoints.concat(response.data); - if (response.meta.total <= response.meta.limit * page) { - break; - } - } - db.setSystemWaypoints(ctx.symbol, waypoints); - return waypoints; - } - return db.getSystem(ctx.symbol).waypoints; -} |