implement new db strategy
Signed-off-by: Arthur Lu <learthurgo@gmail.com>
This commit is contained in:
Arthur Lu
parent
c92fc95e92
commit
dacbd965cf
105
db.js
105
db.js
@ -16,92 +16,25 @@ function init () {
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}
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}
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/**
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* user requests additional resources specified in k-v pairs
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* @param {string} user user's proxmox username in the form username@authrealm
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* @param {Object} resources k-v pairs with resource name as keys and resource ammount as values
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* @returns {boolean} whether the user is approved to allocate requested resources
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*/
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function requestResources (user, resources) {
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let approved = true;
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Object.keys(resources).forEach((element) => {
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if(!(element in db[user].available)) { // if the resource does not exist in the user's entry, assume the user is not allowed to use it
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approved = false;
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}
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else if (db[user].available[element] - resources[element] < 0) {
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approved = false;
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}
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function getResourceMeta () {
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return db.resources;
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}
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function getUserMax (username) {
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return db.users[username].maximum;
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}
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function getResourceUnits () {
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return db.units;
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}
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function putUserResources (username, used) {
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let userEntry = db.users[username];
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userEntry.used = used;
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userEntry.avail = {};
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Object.keys(max).forEach((k) => {
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userEntry.avail[k] = max[k] - used[k];
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});
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return approved;
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}
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/**
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* user allocates additional resources specified in k-v pairs
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* @param {string} user user's proxmox username in the form username@authrealm
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* @param {Object} resources k-v pairs with resource name as keys and resource ammount as values
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* @returns {boolean} true if resources were successfully allocated, false otherwise
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*/
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function allocateResources (user, resources) {
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let newdb = {};
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Object.assign(newdb, db);
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Object.keys(resources).forEach((element) => {
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if(typeof(resources[element]) === "number" && isFinite(resources[element])) {
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newdb[user].available[element] -= resources[element];
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}
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else {
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return false;
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}
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});
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try {
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fs.writeFileSync(filename, JSON.stringify(newdb));
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Object.assign(db, newdb);
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return true;
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}
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catch {
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fs.writeFileSync(filename, JSON.stringify(db))
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return false;
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}
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}
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/**
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* user releases allocated resources specified in k-v pairs
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* @param {string} user user's proxmox username in the form username@authrealm
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* @param {Object} resources k-v pairs with resource name as keys and resource ammount as values
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* @returns {boolean} true if resources were successfully deallocated, false otherwise
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*/
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function releaseResources (user, resources) {
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let newdb = {};
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Object.assign(newdb, db);
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Object.keys(resources).forEach((element) => {
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if(typeof(resources[element]) === "number" && isFinite(resources[element]) && resources[element]) {
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newdb[user].available[element] += resources[element];
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}
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else {
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return false;
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}
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});
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try {
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fs.writeFileSync(filename, JSON.stringify(newdb));
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Object.assign(db, newdb);
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return true;
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}
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catch {
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fs.writeFileSync(filename, JSON.stringify(db))
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return false;
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}
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}
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/**
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* return a read only copy of the user resources
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* @param {string} user user's proxmox username in the form username@authrealm
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* @returns {Object} user's remaining resources as k-v pairs with resource name as keys and resource ammount as values
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*/
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function getResources (user) {
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let returnVal = {};
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if(user in db) {
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Object.assign(returnVal, db[user]);
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}
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return returnVal;
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}
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module.exports = {init, requestResources, allocateResources, releaseResources, getResources};
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module.exports = {init, getResourceMeta, getUserMax, getResourceUnits, putUserResources};
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62
main.js
62
main.js
@ -7,8 +7,8 @@ const morgan = require("morgan");
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var api = require("./package.json");
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const {pveAPIToken, listenPort, domain} = require("./vars.js");
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const {checkAuth, requestPVE, handleResponse, getUnusedDiskData, getDiskConfig} = require("./pveutils.js");
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const {init, requestResources, allocateResources, releaseResources, getResources} = require("./db.js");
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const {checkAuth, requestPVE, handleResponse, getUsedResources} = require("./pveutils.js");
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const {init, getResourceMeta, getUserMax, getResourceUnits} = require("./db.js");
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const app = express();
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app.use(helmet());
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@ -19,82 +19,68 @@ app.use(morgan("combined"));
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app.get("/api/version", (req, res) => {
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res.send({version: api.version});
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res.status(200).send({version: api.version});
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});
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app.get("/api/echo", (req, res) => {
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res.send({body: req.body, cookies: req.cookies});
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res.status(200).send({body: req.body, cookies: req.cookies});
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});
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app.get("/api/auth", async (req, res) => {
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let result = await checkAuth(req.cookies);
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res.send({auth: result});
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await checkAuth(req.cookies);
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res.status(200).send({auth: true});
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});
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app.get("/api/proxmox/*", async (req, res) => { // proxy endpoint for GET proxmox api with no token
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path = req.url.replace("/api/proxmox", "");
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let result = await requestPVE(path, "GET", req.cookies);
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res.send(result.data, result.status);
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res.status(result.status).send(result.data);
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});
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app.post("/api/proxmox/*", async (req, res) => { // proxy endpoint for POST proxmox api with no token
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path = req.url.replace("/api/proxmox", "");
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let result = await requestPVE(path, "POST", req.cookies, JSON.stringify(req.body)); // need to stringify body because of other issues
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res.send(result.data, result.status);
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res.status(result.status).send(result.data);
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});
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app.get("/api/user/resources", async(req, res) => {
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let auth = await checkAuth(req.cookies);
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if (!auth) {
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res.status(401).send({auth: auth});
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return;
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}
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res.status(200).send({resources: getResources(req.cookies.username)});
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await checkAuth(req.cookies, res);
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let rm = getResourceMeta();
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let used = await getUsedResources(req, rm);
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let max = await getUserMax(req.cookies.username);
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avail = {};
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Object.keys(max).forEach((k) => {
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avail[k] = max[k] - used[k];
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});
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let units = getResourceUnits();
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res.status(200).send({used: used, maximum: max, available: avail, units: units});
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return;
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});
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app.post("/api/disk/detach", async (req, res) => {
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let vmpath = `/nodes/${req.body.node}/${req.body.type}/${req.body.vmid}`;
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// check auth
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let auth = await checkAuth(req.cookies, vmpath);
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if (!auth) {
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res.status(401).send({auth: auth});
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return;
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}
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await checkAuth(req.cookies, res);
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if (req.body.disk.includes("unused")) {
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res.status(500).send({auth: auth, data:{error: `Requested disk ${req.body.disk} cannot be unused. Use /disk/delete to permanently delete unused disks.`}});
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return;
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}
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let action = JSON.stringify({delete: req.body.disk});
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let method = req.body.type === "qemu" ? "POST" : "PUT";
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let result = await requestPVE(`${vmpath}/config`, method, req.cookies, action, pveAPIToken);
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result = await handleResponse(req.body.node, result);
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res.status(result.status).send({auth: auth, data: result.data});
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await handleResponse(req.body.node, result, res);
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});
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app.post("/api/disk/attach", async (req, res) => {
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let vmpath = `/nodes/${req.body.node}/${req.body.type}/${req.body.vmid}`;
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// check auth
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let auth = await checkAuth(req.cookies, vmpath);
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if (!auth) {
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res.status(401).send({auth: auth});
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return;
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}
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await checkAuth(req.cookies, res);
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let action = {};
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action[req.body.disk] = req.body.data;
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action = JSON.stringify(action);
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let method = req.body.type === "qemu" ? "POST" : "PUT";
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let result = await requestPVE(`${vmpath}/config`, method, req.cookies, action, pveAPIToken);
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result = await handleResponse(req.body.node, result);
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res.status(result.status).send({auth: auth, data: result.data});
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await handleResponse(req.body.node, result, res);
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});
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/*
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app.post("/api/disk/resize", async (req, res) => {
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let vmpath = `/nodes/${req.body.node}/${req.body.type}/${req.body.vmid}`;
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@ -401,7 +387,7 @@ app.delete("/api/instance", async (req, res) => {
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}
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res.status(result.status).send({auth: auth, data: result.data, deallocated: release});
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});
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});*/
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app.listen(listenPort, () => {
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init();
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86
pveutils.js
86
pveutils.js
@ -1,14 +1,20 @@
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const axios = require('axios');
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const {pveAPI, pveAPIToken} = require("./vars.js");
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async function checkAuth (cookies, vmpath = null) {
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async function checkAuth (cookies, res, vmpath = null) {
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let auth = false;
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if (vmpath) {
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let result = await requestPVE(`/${vmpath}/config`, "GET", cookies);
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return result.status === 200;
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auth = result.status === 200;
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}
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else { // if no path is specified, then do a simple authentication
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let result = await requestPVE("/version", "GET", cookies);
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return result.status === 200;
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auth = result.status === 200;
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}
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if (!auth) {
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res.status(401).send({auth: auth});
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res.end();
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return;
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}
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}
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@ -44,17 +50,21 @@ async function requestPVE (path, method, cookies, body = null, token = null) {
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}
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}
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async function handleResponse (node, response) {
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async function handleResponse (node, result, res) {
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const waitFor = delay => new Promise(resolve => setTimeout(resolve, delay));
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if (response.data.data) {
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let upid = response.data.data;
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if (result.data.data) {
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let upid = result.data.data;
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while (true) {
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let taskStatus = await requestPVE(`/nodes/${node}/tasks/${upid}/status`, "GET", null, null, pveAPIToken);
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if (taskStatus.data.data.status === "stopped" && taskStatus.data.data.exitstatus === "OK") {
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return {status: 200, data: taskStatus.data.data};
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res.status(200).send(taskStatus.data.data);
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res.end();
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return;
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}
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else if (taskStatus.data.data.status === "stopped") {
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return {status: 500, data: taskStatus.data.data};
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res.status(500).send(taskStatus.data.data);
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res.end();
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return;
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}
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else {
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await waitFor(1000);
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@ -62,28 +72,58 @@ async function handleResponse (node, response) {
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}
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}
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else {
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return response;
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res.status(result.status).send(result.data);
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res.end();
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return;
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}
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}
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async function getUnusedDiskData (node, type, vmid, disk) {
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let diskDataConfig = await getDiskConfig(node, type, vmid, disk);
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let storageID = diskDataConfig.split(":")[0];
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async function getUsedResources (req, resourceMeta) {
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let response = await requestPVE("/cluster/resources", "GET", req.cookies);
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let used = {};
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let diskprefixes = [];
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for (let resourceName of Object.keys(resourceMeta)) {
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if (resourceMeta[resourceName].type === "numeric") {
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used[resourceName] = 0;
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}
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else if (resourceMeta[resourceName].type === "disk") {
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resourceMeta[resourceName].storages.forEach((element) => {
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used[element] = 0;
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});
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diskprefixes.push(resourceName);
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}
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}
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for (instance of response.data.data) {
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if (instance.type === "lxc" || instance.type === "qemu") {
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let config = await requestPVE(`/nodes/${instance.node}/${instance.type}/${instance.vmid}/config`, "GET", req.cookies);
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config = config.data.data;
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for (key of Object.keys(config)) {
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if (Object.keys(used).includes(key) && resourceMeta[key].type === "numeric") {
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used[key] += config[key];
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}
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else if (diskprefixes.some(prefix => key.startsWith(prefix))) {
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let diskInfo = await getDiskInfo(instance.node, instance.type, instance.vmid, key);
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used[diskInfo.storage] += diskInfo.size;
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}
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}
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}
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}
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return used;
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}
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async function getDiskInfo (node, type, vmid, disk) {
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let config = await requestPVE(`/nodes/${node}/${type}/${vmid}/config`, "GET", null, null, pveAPIToken);
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let storageID = config.data.data[disk].split(":")[0];
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let volIDTarget = config.data.data[disk].split(",")[0];
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let storageData = await requestPVE(`/nodes/${node}/storage/${storageID}/content`, "GET", null, null, pveAPIToken);
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let diskDataStorage = null;
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let diskInfo = null;
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storageData.data.data.forEach((element) => {
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if (element.volid === diskDataConfig) {
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if (element.volid === volIDTarget) {
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element.storage = storageID;
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diskDataStorage = element;
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diskInfo = element;
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}
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});
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return diskDataStorage;
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return diskInfo;
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}
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async function getDiskConfig (node, type, vmid, disk) {
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let config = await requestPVE(`/nodes/${node}/${type}/${vmid}/config`, "GET", null, null, pveAPIToken);
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return config.data.data[disk];
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}
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module.exports = {checkAuth, requestPVE, handleResponse, getUnusedDiskData, getDiskConfig};
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module.exports = {checkAuth, requestPVE, handleResponse, getUsedResources};
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