dtamind-components
Version:
Apps integration for Dtamind. Contain Nodes and Credentials.
363 lines • 15 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("../../../src/utils");
const typeorm_1 = require("typeorm");
class MySQLRecordManager_RecordManager {
constructor() {
this.label = 'MySQL Record Manager';
this.name = 'MySQLRecordManager';
this.version = 1.0;
this.type = 'MySQL RecordManager';
this.icon = 'mysql.png';
this.category = 'Record Manager';
this.description = 'Use MySQL to keep track of document writes into the vector databases';
this.baseClasses = [this.type, 'RecordManager', ...(0, utils_1.getBaseClasses)(MySQLRecordManager)];
this.inputs = [
{
label: 'Host',
name: 'host',
type: 'string'
},
{
label: 'Database',
name: 'database',
type: 'string'
},
{
label: 'Port',
name: 'port',
type: 'number',
placeholder: '3306',
optional: true
},
{
label: 'Additional Connection Configuration',
name: 'additionalConfig',
type: 'json',
additionalParams: true,
optional: true
},
{
label: 'Table Name',
name: 'tableName',
type: 'string',
placeholder: 'upsertion_records',
additionalParams: true,
optional: true
},
{
label: 'Namespace',
name: 'namespace',
type: 'string',
description: 'If not specified, chatflowid will be used',
additionalParams: true,
optional: true
},
{
label: 'Cleanup',
name: 'cleanup',
type: 'options',
description: 'Read more on the difference between different cleanup methods <a target="_blank" href="https://js.langchain.com/docs/modules/data_connection/indexing/#deletion-modes">here</a>',
options: [
{
label: 'None',
name: 'none',
description: 'No clean up of old content'
},
{
label: 'Incremental',
name: 'incremental',
description: 'Delete previous versions of the content if content of the source document has changed. Important!! SourceId Key must be specified and document metadata must contains the specified key'
},
{
label: 'Full',
name: 'full',
description: 'Same as incremental, but if the source document has been deleted, it will be deleted from vector store as well, incremental mode will not.'
}
],
additionalParams: true,
default: 'none'
},
{
label: 'SourceId Key',
name: 'sourceIdKey',
type: 'string',
description: 'Key used to get the true source of document, to be compared against the record. Document metadata must contains SourceId Key',
default: 'source',
placeholder: 'source',
additionalParams: true,
optional: true
}
];
this.credential = {
label: 'Connect Credential',
name: 'credential',
type: 'credential',
credentialNames: ['MySQLApi']
};
}
async init(nodeData, _, options) {
const credentialData = await (0, utils_1.getCredentialData)(nodeData.credential ?? '', options);
const user = (0, utils_1.getCredentialParam)('user', credentialData, nodeData);
const password = (0, utils_1.getCredentialParam)('password', credentialData, nodeData);
const _tableName = nodeData.inputs?.tableName;
const tableName = _tableName ? _tableName : 'upsertion_records';
const additionalConfig = nodeData.inputs?.additionalConfig;
const _namespace = nodeData.inputs?.namespace;
const namespace = _namespace ? _namespace : options.chatflowid;
const cleanup = nodeData.inputs?.cleanup;
const _sourceIdKey = nodeData.inputs?.sourceIdKey;
const sourceIdKey = _sourceIdKey ? _sourceIdKey : 'source';
let additionalConfiguration = {};
if (additionalConfig) {
try {
additionalConfiguration = typeof additionalConfig === 'object' ? additionalConfig : JSON.parse(additionalConfig);
}
catch (exception) {
throw new Error('Invalid JSON in the Additional Configuration: ' + exception);
}
}
const mysqlOptions = {
...additionalConfiguration,
type: 'mysql',
host: nodeData.inputs?.host,
port: nodeData.inputs?.port,
username: user,
password: password,
database: nodeData.inputs?.database
};
const args = {
mysqlOptions,
tableName: tableName
};
const recordManager = new MySQLRecordManager(namespace, args);
recordManager.cleanup = cleanup;
recordManager.sourceIdKey = sourceIdKey;
return recordManager;
}
}
class MySQLRecordManager {
constructor(namespace, config) {
this.lc_namespace = ['langchain', 'recordmanagers', 'mysql'];
const { tableName } = config;
this.namespace = namespace;
this.tableName = tableName || 'upsertion_records';
this.config = config;
}
sanitizeTableName(tableName) {
// Trim and normalize case, turn whitespace into underscores
tableName = tableName.trim().toLowerCase().replace(/\s+/g, '_');
// Validate using a regex (alphanumeric and underscores only)
if (!/^[a-zA-Z0-9_]+$/.test(tableName)) {
throw new Error('Invalid table name');
}
return tableName;
}
async getDataSource() {
const { mysqlOptions } = this.config;
if (!mysqlOptions) {
throw new Error('No datasource options provided');
}
// Prevent using default Postgres port, otherwise will throw uncaught error and crashing the app
if (mysqlOptions.port === 5432) {
throw new Error('Invalid port number');
}
const dataSource = new typeorm_1.DataSource(mysqlOptions);
await dataSource.initialize();
return dataSource;
}
async createSchema() {
try {
const dataSource = await this.getDataSource();
const queryRunner = dataSource.createQueryRunner();
const tableName = this.sanitizeTableName(this.tableName);
await queryRunner.manager.query(`create table if not exists \`${this.sanitizeTableName(tableName)}\` (
\`uuid\` varchar(36) primary key default (UUID()),
\`key\` varchar(255) not null,
\`namespace\` varchar(255) not null,
\`updated_at\` DOUBLE precision not null,
\`group_id\` longtext,
unique key \`unique_key_namespace\` (\`key\`,
\`namespace\`));`);
const columns = [`updated_at`, `key`, `namespace`, `group_id`];
for (const column of columns) {
// MySQL does not support 'IF NOT EXISTS' function for Index
const Check = await queryRunner.manager.query(`SELECT COUNT(1) IndexIsThere FROM INFORMATION_SCHEMA.STATISTICS
WHERE table_schema=DATABASE() AND table_name='${tableName}' AND index_name='${column}_index';`);
if (Check[0].IndexIsThere === 0)
await queryRunner.manager.query(`CREATE INDEX \`${column}_index\`
ON \`${tableName}\` (\`${column}\`);`);
}
await queryRunner.release();
}
catch (e) {
// This error indicates that the table already exists
// Due to asynchronous nature of the code, it is possible that
// the table is created between the time we check if it exists
// and the time we try to create it. It can be safely ignored.
if ('code' in e && e.code === '23505') {
return;
}
throw e;
}
}
async getTime() {
const dataSource = await this.getDataSource();
try {
const queryRunner = dataSource.createQueryRunner();
const res = await queryRunner.manager.query(`SELECT UNIX_TIMESTAMP(NOW()) AS epoch`);
await queryRunner.release();
return Number.parseFloat(res[0].epoch);
}
catch (error) {
console.error('Error getting time in MySQLRecordManager:');
throw error;
}
finally {
await dataSource.destroy();
}
}
async update(keys, updateOptions) {
if (keys.length === 0) {
return;
}
const dataSource = await this.getDataSource();
const queryRunner = dataSource.createQueryRunner();
const tableName = this.sanitizeTableName(this.tableName);
const updatedAt = await this.getTime();
const { timeAtLeast, groupIds: _groupIds } = updateOptions ?? {};
if (timeAtLeast && updatedAt < timeAtLeast) {
throw new Error(`Time sync issue with database ${updatedAt} < ${timeAtLeast}`);
}
const groupIds = _groupIds ?? keys.map(() => null);
if (groupIds.length !== keys.length) {
throw new Error(`Number of keys (${keys.length}) does not match number of group_ids (${groupIds.length})`);
}
const recordsToUpsert = keys.map((key, i) => [
key,
this.namespace,
updatedAt,
groupIds[i] ?? null // Ensure groupIds[i] is null if undefined
]);
const query = `
INSERT INTO \`${tableName}\` (\`key\`, \`namespace\`, \`updated_at\`, \`group_id\`)
VALUES (?, ?, ?, ?)
ON DUPLICATE KEY UPDATE \`updated_at\` = VALUES(\`updated_at\`)`;
// To handle multiple files upsert
try {
for (const record of recordsToUpsert) {
// Consider using a transaction for batch operations
await queryRunner.manager.query(query, record.flat());
}
await queryRunner.release();
}
catch (error) {
console.error('Error updating in MySQLRecordManager:');
throw error;
}
finally {
await dataSource.destroy();
}
}
async exists(keys) {
if (keys.length === 0) {
return [];
}
const dataSource = await this.getDataSource();
const queryRunner = dataSource.createQueryRunner();
const tableName = this.sanitizeTableName(this.tableName);
// Prepare the placeholders and the query
const placeholders = keys.map(() => `?`).join(', ');
const query = `
SELECT \`key\`
FROM \`${tableName}\`
WHERE \`namespace\` = ? AND \`key\` IN (${placeholders})`;
// Initialize an array to fill with the existence checks
const existsArray = new Array(keys.length).fill(false);
try {
// Execute the query
const rows = await queryRunner.manager.query(query, [this.namespace, ...keys.flat()]);
// Create a set of existing keys for faster lookup
const existingKeysSet = new Set(rows.map((row) => row.key));
// Map the input keys to booleans indicating if they exist
keys.forEach((key, index) => {
existsArray[index] = existingKeysSet.has(key);
});
await queryRunner.release();
return existsArray;
}
catch (error) {
console.error('Error checking existence of keys');
throw error;
}
finally {
await dataSource.destroy();
}
}
async listKeys(options) {
const dataSource = await this.getDataSource();
const queryRunner = dataSource.createQueryRunner();
const tableName = this.sanitizeTableName(this.tableName);
try {
const { before, after, limit, groupIds } = options ?? {};
let query = `SELECT \`key\` FROM \`${tableName}\` WHERE \`namespace\` = ?`;
const values = [this.namespace];
if (before) {
query += ` AND \`updated_at\` < ?`;
values.push(before);
}
if (after) {
query += ` AND \`updated_at\` > ?`;
values.push(after);
}
if (limit) {
query += ` LIMIT ?`;
values.push(limit);
}
if (groupIds && Array.isArray(groupIds)) {
query += ` AND \`group_id\` IN (${groupIds
.filter((gid) => gid !== null)
.map(() => '?')
.join(', ')})`;
values.push(...groupIds.filter((gid) => gid !== null));
}
query += ';';
// Directly using try/catch with async/await for cleaner flow
const result = await queryRunner.manager.query(query, values);
await queryRunner.release();
return result.map((row) => row.key);
}
catch (error) {
console.error('MySQLRecordManager listKeys Error: ');
throw error;
}
finally {
await dataSource.destroy();
}
}
async deleteKeys(keys) {
if (keys.length === 0) {
return;
}
const dataSource = await this.getDataSource();
const queryRunner = dataSource.createQueryRunner();
const tableName = this.sanitizeTableName(this.tableName);
const placeholders = keys.map(() => '?').join(', ');
const query = `DELETE FROM \`${tableName}\` WHERE \`namespace\` = ? AND \`key\` IN (${placeholders});`;
const values = [this.namespace, ...keys].map((v) => (typeof v !== 'string' ? `${v}` : v));
// Directly using try/catch with async/await for cleaner flow
try {
await queryRunner.manager.query(query, values);
await queryRunner.release();
}
catch (error) {
console.error('Error deleting keys');
throw error;
}
finally {
await dataSource.destroy();
}
}
}
module.exports = { nodeClass: MySQLRecordManager_RecordManager };
//# sourceMappingURL=MySQLrecordManager.js.map