Add eventlogdb

src/eventlogdb.js

@@ -0,0 +1,83 @@
+'use strict';
+
+exports = module.exports = {
+    get: get,
+    getAllPaged: getAllPaged,
+    add: add,
+    count: count,
+
+    _clear: clear
+};
+
+var assert = require('assert'),
+    database = require('./database.js'),
+    DatabaseError = require('./databaseerror'),
+    safe = require('safetydance');
+
+var EVENTLOGS_FIELDS = [ 'id', 'action', 'dataJson', 'creationTime' ].join(',');
+
+function postProcess(eventLog) {
+    eventLog.data = safe.JSON.parse(eventLog.dataJson);
+
+    delete eventLog.dataJson;
+
+    return eventLog;
+}
+
+function get(eventId, callback) {
+    assert.strictEqual(typeof eventId, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    database.query('SELECT ' + EVENTLOGS_FIELDS + ' FROM eventlog WHERE id = ?', [ eventId ], function (error, result) {
+        if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
+        if (result.length === 0) return callback(new DatabaseError(DatabaseError.NOT_FOUND));
+
+        callback(null, postProcess(result[0]));
+    });
+}
+
+function getAllPaged(page, perPage, callback) {
+    assert.strictEqual(typeof page, 'number');
+    assert.strictEqual(typeof perPage, 'number');
+    assert.strictEqual(typeof callback, 'function');
+
+    database.query('SELECT ' + EVENTLOGS_FIELDS + 'FROM eventlog ORDER BY creationTime DESC LIMIT ?,?', [ (page-1)*perPage, perPage ], function (error, results) {
+        if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
+
+        results.forEach(postProcess);
+
+        callback(null, results);
+    });
+}
+
+function add(id, action, data, callback) {
+    assert.strictEqual(typeof id, 'string');
+    assert.strictEqual(typeof action, 'string');
+    assert.strictEqual(typeof data, 'object');
+    assert.strictEqual(typeof callback, 'function');
+
+    database.query('INSERT INTO eventlog (id, action, dataJson) VALUES (?, ?, ?)', [ id, action, JSON.stringify(data) ], function (error, result) {
+        if (error && error.code === 'ER_DUP_ENTRY') return callback(new DatabaseError(DatabaseError.ALREADY_EXISTS, error));
+        if (error || result.affectedRows !== 1) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
+
+        callback(null);
+    });
+}
+
+function count(callback) {
+    assert.strictEqual(typeof callback, 'function');
+
+    database.query('SELECT COUNT(*) AS total FROM eventlog', function (error, result) {
+        if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
+
+        return callback(null, result[0].total);
+    });
+}
+
+function clear(callback) {
+    database.query('DELETE FROM eventlog', function (error) {
+        if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
+
+        callback(error);
+    });
+}