155 lines
4.5 KiB
JavaScript
155 lines
4.5 KiB
JavaScript
'use strict';
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var PSQL = require('cartodb-psql');
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var _ = require('underscore');
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const debug = require('debug')('cachechan');
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function PgConnection(metadataBackend) {
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this.metadataBackend = metadataBackend;
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}
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module.exports = PgConnection;
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// Set db authentication parameters to those of the given username
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//
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// @param username the cartodb username, mapped to a database username
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// via CartodbRedis metadata records
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//
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// @param params the parameters to set auth options into
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// added params are: "dbuser" and "dbpassword"
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//
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// @param callback function(err)
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//
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PgConnection.prototype.setDBAuth = function(username, params, apikeyType, callback) {
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if (apikeyType === 'master') {
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this.metadataBackend.getMasterApikey(username, (err, apikey) => {
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if (err) {
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if (isNameNotFoundError(err)) {
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err.http_status = 404;
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}
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return callback(err);
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}
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params.dbuser = apikey.databaseRole;
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params.dbpassword = apikey.databasePassword;
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return callback();
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});
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} else if (apikeyType === 'regular') { //Actually it can be any type of api key
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this.metadataBackend.getApikey(username, params.api_key, (err, apikey) => {
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if (err) {
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if (isNameNotFoundError(err)) {
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err.http_status = 404;
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}
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return callback(err);
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}
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params.dbuser = apikey.databaseRole;
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params.dbpassword = apikey.databasePassword;
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return callback();
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});
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} else if (apikeyType === 'default') {
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this.metadataBackend.getApikey(username, 'default_public', (err, apikey) => {
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if (err) {
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if (isNameNotFoundError(err)) {
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err.http_status = 404;
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}
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return callback(err);
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}
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params.dbuser = apikey.databaseRole;
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params.dbpassword = apikey.databasePassword;
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return callback();
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});
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} else {
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return callback(new Error(`Invalid Apikey type: ${apikeyType}, valid ones: master, regular, default`));
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}
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};
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function isNameNotFoundError (err) {
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return err.message && -1 !== err.message.indexOf('name not found');
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}
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// Set db connection parameters to those for the given username
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//
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// @param dbowner cartodb username of database owner,
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// mapped to a database username
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// via CartodbRedis metadata records
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//
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// @param params the parameters to set connection options into
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// added params are: "dbname", "dbhost"
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//
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// @param callback function(err)
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//
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PgConnection.prototype.setDBConn = function(dbowner, params, callback) {
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_.defaults(params, {
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// dbuser: global.environment.postgres.user,
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// dbpassword: global.environment.postgres.password,
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dbhost: global.environment.postgres.host,
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dbport: global.environment.postgres.port
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});
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this.metadataBackend.getUserDBConnectionParams(dbowner, (err, dbParams) => {
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if (err) {
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return callback(err);
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}
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// we don’t want null values or overwrite a non public user
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if (params.dbuser !== 'publicuser' || !dbParams.dbuser) {
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delete dbParams.dbuser;
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}
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if (dbParams) {
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_.extend(params, dbParams);
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}
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callback();
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});
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};
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/**
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* Returns a `cartodb-psql` object for a given username.
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* @param {String} username
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* @param {Function} callback function({Error}, {PSQL})
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*/
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PgConnection.prototype.getConnection = function(username, callback) {
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debug("getConn1");
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this.getDatabaseParams(username, (err, databaseParams) => {
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if (err) {
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return callback(err);
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}
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return callback(err, new PSQL({
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user: databaseParams.dbuser,
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pass: databaseParams.dbpass,
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host: databaseParams.dbhost,
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port: databaseParams.dbport,
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dbname: databaseParams.dbname
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}));
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});
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};
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PgConnection.prototype.getDatabaseParams = function(username, callback) {
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const databaseParams = {};
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this.setDBAuth(username, databaseParams, 'master', err => {
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if (err) {
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return callback(err);
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}
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this.setDBConn(username, databaseParams, err => {
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if (err) {
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return callback(err);
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}
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callback(null, databaseParams);
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});
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});
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};
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