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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the qtqa module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
exports.id = "postgreSQLClient";
const { Pool } = require("pg");
const jsonSql = require("json-sql")();
let config = require("./postgreSQLconfig.json");
jsonSql.configure({ namedValues: false });
jsonSql.setDialect("postgresql");
// Use DATABASE_URL environment variable if set. (Heroku environments)
// Otherwise, continue to use the config file.
if (process.env.DATABASE_URL)
config = { connectionString: process.env.DATABASE_URL, ssl: true };
const pool = new Pool(config);
pool.on("error", (err) => {
// This should be non-critical. The database will clean up idle clients.
console.trace("An idle database client has experienced an error", err.stack);
});
// Create our tables if they don't exist
pool.query(`CREATE TABLE IF NOT EXISTS processing_queue
(
uuid UUID PRIMARY KEY,
changeid TEXT,
state TEXT,
revision TEXT,
rawjson TEXT,
cherrypick_results_json TEXT,
pick_count_remaining INTEGER
)
`);
pool.query(`CREATE TABLE IF NOT EXISTS finished_requests
(
uuid UUID PRIMARY KEY,
changeid TEXT,
state TEXT,
revision TEXT,
rawjson TEXT,
cherrypick_results_json TEXT,
pick_count_remaining INTEGER
)
`);
pool.query(`CREATE TABLE IF NOT EXISTS retry_queue
(
uuid UUID PRIMARY KEY,
retryaction TEXT,
args TEXT
)
`);
// Exported functions
exports.end = end;
function end() {
console.log("Waiting for PostgreSQL connections to close...");
pool.end(function() {
console.log("Database client pool has ended");
});
}
exports.insert = insert;
function insert(table, columns, values, callback) {
let valuecount_string;
if (table == "processing_queue")
valuecount_string = "$1,$2,$3,$4,$5,$6";
else if (table == "retry_queue")
valuecount_string = "$1,$2,$3";
const query = {
name: `insert-row-${table}`,
text: `INSERT INTO ${table}(${columns}) VALUES(${valuecount_string})`,
values: values
};
pool.query(query, function(err, data) {
if (err)
console.trace(err.message);
if (callback)
callback(!err, err ? err : data);
});
}
exports.query = query;
function query(table, fields, keyName, keyValue, callback) {
const query = {
name: `query-${keyName}-${fields}`,
text: `SELECT ${fields ? fields : "*"} FROM ${table} WHERE ${keyName} = $1`,
values: [keyValue]
};
pool.query(query, (err, data) => {
if (err)
console.trace(err);
if (callback) {
let returndata = data.rows.length == 1 ? data.rows[0] : data.rows;
callback(!err, err ? err : returndata);
}
});
}
exports.update = update;
function update(table, keyName, keyValue, changes, callback, processNextQueuedUpdate) {
let sql = jsonSql.build({
type: "update", table: table,
condition: { [keyName]: keyValue },
modifier: { ...changes }
});
pool.query(sql.query, sql.values, function(err, result) {
if (callback)
callback(!err, err ? err : result);
// If the queuing function was passed, call it with the unlock parameter.
// This will process the next item in queue or globally unlock the status
// update lockout.
if (processNextQueuedUpdate)
processNextQueuedUpdate(undefined, undefined, undefined, undefined, true);
});
}
exports.move = move;
function move(fromTable, toTable, keyName, keyValue, callback) {
const query = {
name: `query-move`,
text: `INSERT INTO ${toTable} SELECT * FROM ${fromTable} WHERE ${keyName} = $1`,
values: [keyValue]
};
pool.query(query, function(err) {
if (err) {
console.trace(err);
callback(false, err);
} else {
deleteDBEntry(fromTable, keyName, keyValue, callback);
}
});
}
// Decrement a numeric key and return the new count.
exports.decrement = decrement;
function decrement(table, uuid, keyName, callback) {
pool.query(
`UPDATE ${table} SET ${keyName} = ${keyName} - 1 WHERE uuid = '${uuid}'`,
function(err) {
if (err) {
console.trace(err);
callback(false, err);
} else {
query(table, ["pick_count_remaining"], "uuid", uuid, callback);
}
}
);
}
exports.deleteDBEntry = deleteDBEntry;
function deleteDBEntry(table, keyName, keyValue, callback) {
let sql = jsonSql.build({
type: "remove", table: table,
condition: { [keyName]: keyValue }
});
pool.query(sql.query, sql.values, function(err) {
if (err)
console.trace(`An error occurred while running a query: ${JSON.stringify(sql)}`);
if (callback)
callback(!err, err ? err : this);
});
}
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