n8n/packages/nodes-base/nodes/CrateDb/CrateDb.node.ts
Iván Ovejero fbb8611ae2
refactor: Deprecate alwaysOpenEditWindow for string (#4839)
* 🔥 Remove from client

* 📘 Update interface comment

* ✏️ Update docs

*  Update nodes

* ✏️ Fix typo

*  Restore misremoved property

* 🔥 Remove more instances
2022-12-07 15:29:45 +01:00

389 lines
9.7 KiB
TypeScript

import { IExecuteFunctions } from 'n8n-core';
import {
INodeExecutionData,
INodeType,
INodeTypeDescription,
NodeOperationError,
} from 'n8n-workflow';
import {
generateReturning,
getItemCopy,
getItemsCopy,
pgInsert,
pgQuery,
pgUpdate,
} from '../Postgres/Postgres.node.functions';
import pgPromise from 'pg-promise';
export class CrateDb implements INodeType {
description: INodeTypeDescription = {
displayName: 'CrateDB',
name: 'crateDb',
// eslint-disable-next-line n8n-nodes-base/node-class-description-icon-not-svg
icon: 'file:cratedb.png',
group: ['input'],
version: 1,
description: 'Add and update data in CrateDB',
defaults: {
name: 'CrateDB',
},
inputs: ['main'],
outputs: ['main'],
credentials: [
{
name: 'crateDb',
required: true,
},
],
properties: [
{
displayName: 'Operation',
name: 'operation',
type: 'options',
noDataExpression: true,
options: [
{
name: 'Execute Query',
value: 'executeQuery',
description: 'Execute an SQL query',
action: 'Execute a SQL query',
},
{
name: 'Insert',
value: 'insert',
description: 'Insert rows in database',
action: 'Insert rows in database',
},
{
name: 'Update',
value: 'update',
description: 'Update rows in database',
action: 'Update rows in database',
},
],
default: 'insert',
},
// ----------------------------------
// executeQuery
// ----------------------------------
{
displayName: 'Query',
name: 'query',
type: 'string',
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,
// eslint-disable-next-line n8n-nodes-base/node-param-description-miscased-id
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 <a href="https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.cratedb/">the docs</a> for more examples.',
},
{
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 = await this.getCredentials('crateDb');
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);
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);
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) + ' = ${' + updateKey + '}')
.join(' AND ');
// updateKeyValue = item.json[updateKey] as string | number;
// if (updateKeyValue === undefined) {
// throw new NodeOperationError(this.getNode(), 'No value found for update key!');
// }
const returning = generateReturning(
pgp,
this.getNodeParameter('returnFields', 0) as string,
);
const queries: string[] = [];
for (let i = 0; i < items.length; i++) {
const itemCopy = getItemCopy(items[i], columns);
queries.push(
pgp.helpers.update(itemCopy, cs) + pgp.as.format(where, itemCopy) + returning,
);
}
const _updateItems = await db.multi(pgp.helpers.concat(queries));
returnItems = this.helpers.returnJsonArray(getItemsCopy(items, columns));
}
} else {
pgp.end();
throw new NodeOperationError(
this.getNode(),
`The operation "${operation}" is not supported!`,
);
}
// Close the connection
pgp.end();
return this.prepareOutputData(returnItems);
}
}