mirror of
https://github.com/n8n-io/n8n.git
synced 2024-11-10 14:44:05 -08:00
362 lines
9.5 KiB
TypeScript
362 lines
9.5 KiB
TypeScript
import { IExecuteFunctions } from 'n8n-core';
|
|
import {
|
|
IDataObject,
|
|
INodeExecutionData,
|
|
INodeType,
|
|
INodeTypeDescription,
|
|
NodeOperationError,
|
|
} from 'n8n-workflow';
|
|
|
|
import {
|
|
generateReturning,
|
|
getItemCopy,
|
|
getItemsCopy,
|
|
pgInsert,
|
|
pgQuery,
|
|
pgUpdate,
|
|
} from '../Postgres/Postgres.node.functions';
|
|
|
|
import * as pgPromise from 'pg-promise';
|
|
|
|
export class CrateDb implements INodeType {
|
|
description: INodeTypeDescription = {
|
|
displayName: 'CrateDB',
|
|
name: 'crateDb',
|
|
icon: 'file:cratedb.png',
|
|
group: ['input'],
|
|
version: 1,
|
|
description: 'Add and update data in CrateDB',
|
|
defaults: {
|
|
name: 'CrateDB',
|
|
color: '#47889f',
|
|
},
|
|
inputs: ['main'],
|
|
outputs: ['main'],
|
|
credentials: [
|
|
{
|
|
name: 'crateDb',
|
|
required: true,
|
|
},
|
|
],
|
|
properties: [
|
|
{
|
|
displayName: 'Operation',
|
|
name: 'operation',
|
|
type: 'options',
|
|
options: [
|
|
{
|
|
name: 'Execute Query',
|
|
value: 'executeQuery',
|
|
description: 'Execute an SQL query',
|
|
},
|
|
{
|
|
name: 'Insert',
|
|
value: 'insert',
|
|
description: 'Insert rows in database',
|
|
},
|
|
{
|
|
name: 'Update',
|
|
value: 'update',
|
|
description: 'Update rows in database',
|
|
},
|
|
],
|
|
default: 'insert',
|
|
description: 'The operation to perform.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// executeQuery
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Query',
|
|
name: 'query',
|
|
type: 'string',
|
|
typeOptions: {
|
|
rows: 5,
|
|
},
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['executeQuery'],
|
|
},
|
|
},
|
|
default: '',
|
|
placeholder: 'SELECT id, name FROM product WHERE quantity > $1 AND price <= $2',
|
|
required: true,
|
|
description: 'The SQL query to execute. You can use n8n expressions or $1 and $2 in conjunction with query parameters.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// insert
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Schema',
|
|
name: 'schema',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['insert'],
|
|
},
|
|
},
|
|
default: 'doc',
|
|
required: true,
|
|
description: 'Name of the schema the table belongs to',
|
|
},
|
|
{
|
|
displayName: 'Table',
|
|
name: 'table',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['insert'],
|
|
},
|
|
},
|
|
default: '',
|
|
required: true,
|
|
description: 'Name of the table in which to insert data to.',
|
|
},
|
|
{
|
|
displayName: 'Columns',
|
|
name: 'columns',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['insert'],
|
|
},
|
|
},
|
|
default: '',
|
|
placeholder: 'id,name,description',
|
|
description:
|
|
'Comma separated list of the properties which should used as columns for the new rows.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// update
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Schema',
|
|
name: 'schema',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['update'],
|
|
},
|
|
},
|
|
default: 'doc',
|
|
required: true,
|
|
description: 'Name of the schema the table belongs to',
|
|
},
|
|
{
|
|
displayName: 'Table',
|
|
name: 'table',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['update'],
|
|
},
|
|
},
|
|
default: '',
|
|
required: true,
|
|
description: 'Name of the table in which to update data in',
|
|
},
|
|
{
|
|
displayName: 'Update Key',
|
|
name: 'updateKey',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['update'],
|
|
},
|
|
},
|
|
default: 'id',
|
|
required: true,
|
|
description:
|
|
'Comma separated list of the properties which decides which rows in the database should be updated. Normally that would be "id".',
|
|
},
|
|
{
|
|
displayName: 'Columns',
|
|
name: 'columns',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['update'],
|
|
},
|
|
},
|
|
default: '',
|
|
placeholder: 'name,description',
|
|
description:
|
|
'Comma separated list of the properties which should used as columns for rows to update.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// insert,update
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Return Fields',
|
|
name: 'returnFields',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: ['insert', 'update'],
|
|
},
|
|
},
|
|
default: '*',
|
|
description: 'Comma separated list of the fields that the operation will return',
|
|
},
|
|
// ----------------------------------
|
|
// additional fields
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Additional Fields',
|
|
name: 'additionalFields',
|
|
type: 'collection',
|
|
placeholder: 'Add Field',
|
|
default: {},
|
|
options: [
|
|
{
|
|
displayName: 'Mode',
|
|
name: 'mode',
|
|
type: 'options',
|
|
options: [
|
|
{
|
|
name: 'Independently',
|
|
value: 'independently',
|
|
description: 'Execute each query independently',
|
|
},
|
|
{
|
|
name: 'Multiple queries',
|
|
value: 'multiple',
|
|
description: '<b>Default</b>. Sends multiple queries at once to database.',
|
|
},
|
|
],
|
|
default: 'multiple',
|
|
description: [
|
|
'The way queries should be sent to database.',
|
|
'Can be used in conjunction with <b>Continue on Fail</b>.',
|
|
'See the docs for more examples',
|
|
].join('<br>'),
|
|
},
|
|
{
|
|
displayName: 'Query Parameters',
|
|
name: 'queryParams',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
'/operation': [
|
|
'executeQuery',
|
|
],
|
|
},
|
|
},
|
|
default: '',
|
|
placeholder: 'quantity,price',
|
|
description: 'Comma separated list of properties which should be used as query parameters.',
|
|
},
|
|
],
|
|
},
|
|
],
|
|
};
|
|
|
|
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
|
|
const credentials = this.getCredentials('crateDb');
|
|
|
|
if (credentials === undefined) {
|
|
throw new NodeOperationError(this.getNode(), 'No credentials got returned!');
|
|
}
|
|
|
|
const pgp = pgPromise();
|
|
|
|
const config = {
|
|
host: credentials.host as string,
|
|
port: credentials.port as number,
|
|
database: credentials.database as string,
|
|
user: credentials.user as string,
|
|
password: credentials.password as string,
|
|
ssl: !['disable', undefined].includes(credentials.ssl as string | undefined),
|
|
sslmode: (credentials.ssl as string) || 'disable',
|
|
};
|
|
|
|
const db = pgp(config);
|
|
|
|
let returnItems: INodeExecutionData[] = [];
|
|
|
|
const items = this.getInputData();
|
|
const operation = this.getNodeParameter('operation', 0) as string;
|
|
|
|
if (operation === 'executeQuery') {
|
|
// ----------------------------------
|
|
// executeQuery
|
|
// ----------------------------------
|
|
|
|
const queryResult = await pgQuery(this.getNodeParameter, pgp, db, items, this.continueOnFail());
|
|
|
|
returnItems = this.helpers.returnJsonArray(queryResult);
|
|
} else if (operation === 'insert') {
|
|
// ----------------------------------
|
|
// insert
|
|
// ----------------------------------
|
|
|
|
const insertData = await pgInsert(this.getNodeParameter, pgp, db, items, this.continueOnFail());
|
|
|
|
for (let i = 0; i < insertData.length; i++) {
|
|
returnItems.push({
|
|
json: insertData[i],
|
|
});
|
|
}
|
|
} else if (operation === 'update') {
|
|
// ----------------------------------
|
|
// update
|
|
// ----------------------------------
|
|
|
|
const additionalFields = this.getNodeParameter('additionalFields', 0) as IDataObject;
|
|
const mode = additionalFields.mode ?? 'multiple' as string;
|
|
|
|
if(mode === 'independently') {
|
|
const updateItems = await pgUpdate(this.getNodeParameter, pgp, db, items, this.continueOnFail());
|
|
|
|
returnItems = this.helpers.returnJsonArray(updateItems);
|
|
} else if(mode === 'multiple') {
|
|
// Crate db does not support multiple-update queries
|
|
// Therefore we cannot invoke `pgUpdate` using multiple mode
|
|
// so we have to call multiple updates manually here
|
|
|
|
const table = this.getNodeParameter('table', 0) as string;
|
|
const schema = this.getNodeParameter('schema', 0) as string;
|
|
const updateKeys = (this.getNodeParameter('updateKey', 0) as string).split(',').map(column => column.trim());
|
|
const columns = (this.getNodeParameter('columns', 0) as string).split(',').map(column => column.trim());
|
|
const queryColumns = columns.slice();
|
|
|
|
updateKeys.forEach(updateKey => {
|
|
if (!queryColumns.includes(updateKey)) {
|
|
columns.unshift(updateKey);
|
|
queryColumns.unshift('?' + updateKey);
|
|
}
|
|
});
|
|
|
|
const cs = new pgp.helpers.ColumnSet(queryColumns, { table: { table, schema } });
|
|
|
|
const where = ' WHERE ' + updateKeys.map(updateKey => pgp.as.name(updateKey) + ' = ${' + updateKey + '}').join(' AND ');
|
|
// updateKeyValue = item.json[updateKey] as string | number;
|
|
// if (updateKeyValue === undefined) {
|
|
// throw new NodeOperationError(this.getNode(), 'No value found for update key!');
|
|
// }
|
|
|
|
const returning = generateReturning(pgp, this.getNodeParameter('returnFields', 0) as string);
|
|
const queries:string[] = [];
|
|
for (let i = 0; i < items.length; i++) {
|
|
const itemCopy = getItemCopy(items[i], columns);
|
|
queries.push(pgp.helpers.update(itemCopy, cs) + pgp.as.format(where, itemCopy) + returning);
|
|
}
|
|
const updateItems = await db.multi(pgp.helpers.concat(queries));
|
|
returnItems = this.helpers.returnJsonArray(getItemsCopy(items, columns) as IDataObject[]);
|
|
}
|
|
} else {
|
|
await pgp.end();
|
|
throw new NodeOperationError(this.getNode(), `The operation "${operation}" is not supported!`);
|
|
}
|
|
|
|
// Close the connection
|
|
await pgp.end();
|
|
|
|
return this.prepareOutputData(returnItems);
|
|
}
|
|
}
|