Girish Ramakrishnan
75 lines
1.8 KiB
JavaScript
75 lines
1.8 KiB
JavaScript
'use strict';
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var fs = require('fs'),
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util = require('util');
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var rootDir = '';
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exports = module.exports = {
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// tables
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USERS_TABLE: null,
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initializeSync: initializeSync,
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firstTime: firstTime,
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DatabaseError: DatabaseError,
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Table: Table
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};
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// http://dustinsenos.com/articles/customErrorsInNode
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// http://code.google.com/p/v8/wiki/JavaScriptStackTraceApi
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function DatabaseError(err, reason) {
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Error.call(this);
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Error.captureStackTrace(this, this.constructor);
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this.name = this.constructor.name;
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this.message = JSON.stringify(err);
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this.code = err ? err.code : null;
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this.reason = reason || DatabaseError.SERVER_ERROR;
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this.statusCode = 500; // any db error is a server error
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}
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util.inherits(DatabaseError, Error);
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DatabaseError.SERVER_ERROR = 1;
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DatabaseError.INTERNAL_ERROR = 2;
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DatabaseError.ALREADY_EXISTS = 3;
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DatabaseError.NOT_FOUND = 4;
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function Table(dbFile, schema) {
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this.dbFile = dbFile;
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this.schema = schema;
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for (var p in schema) {
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if (schema[p].hashKey === true) this.hashKey = p;
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else if (schema[p].rangeKey === true) this.rangeKey = p;
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}
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if (!('hashKey' in this)) throw(new Error('Table does not define a primary key'));
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}
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Table.prototype.put = function (user, callback) {
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fs.writeFile(this.dbFile, JSON.stringify(user), callback);
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};
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function initializeSync(dbDir) {
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if (!fs.existsSync(dbDir)) fs.mkdirSync(dbDir);
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rootDir = dbDir;
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exports.USERS_TABLE = new Table(rootDir + '/users', {
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username: { type: 'String', hashKey: true },
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email: { type: 'String' },
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password: { type: 'String', priv: true },
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salt: { type: 'String', priv: true },
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created_at: { type: 'String' },
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modified_at: { type: 'String' }
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});
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return true;
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}
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function firstTime() {
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return !fs.existsSync(rootDir + '/users');
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}
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