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authorJulien Dessaux2023-07-01 23:13:13 +0200
committerJulien Dessaux2023-07-01 23:13:13 +0200
commit36cc33f9e96a38ecea98ac8d26275b4828347d80 (patch)
tree653dcea7e656ec815fc0a1fa5664a6b89abccaa3 /lib
parentFixed prepared statements (diff)
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Moved the nodejs agent to its own subfolder to make room for my haskell agent
Diffstat (limited to 'lib')
-rw-r--r--lib/api.js140
-rw-r--r--lib/contracts.js26
-rw-r--r--lib/priority_queue.js39
-rw-r--r--lib/ships.js187
-rw-r--r--lib/systems.js68
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;
-}