n8n/packages/nodes-base/nodes/Postgres/Postgres.node.ts
Iván Ovejero 1d27a9e87e
Improve node error handling (#1309)
* Add path mapping and response error interfaces

* Add error handling and throwing functionality

* Refactor error handling into a single function

* Re-implement error handling in Hacker News node

* Fix linting details

* Re-implement error handling in Spotify node

* Re-implement error handling in G Suite Admin node

* 🚧 create basic setup NodeError

* 🚧 add httpCodes

* 🚧 add path priolist

* 🚧 handle statusCode in error, adjust interfaces

* 🚧 fixing type issues w/Ivan

* 🚧 add error exploration

* 👔 fix linter issues

* 🔧 improve object check

* 🚧 remove path passing from NodeApiError

* 🚧 add multi error + refactor findProperty method

* 👔 allow any

* 🔧 handle multi error message callback

*  change return type of callback

*  add customCallback to MultiError

* 🚧 refactor to use INode

* 🔨 handle arrays, continue search after first null property found

* 🚫 refactor method access

* 🚧 setup NodeErrorView

*  change timestamp to Date.now

* 📚 Add documentation for methods and constants

* 🚧 change message setting

* 🚚 move NodeErrors to workflow

*  add new ErrorView for Nodes

* 🎨 improve error notification

* 🎨 refactor interfaces

*  add WorkflowOperationError, refactor error throwing

* 👕 fix linter issues

* 🎨 rename param

* 🐛 fix handling normal errors

*  add usage of NodeApiError

* 🎨 fix throw new error instead of constructor

* 🎨 remove unnecessary code/comments

* 🎨 adjusted spacing + updated status messages

* 🎨 fix tab indentation

*  Replace current errors with custom errors (#1576)

*  Introduce NodeApiError in catch blocks

*  Introduce NodeOperationError in nodes

*  Add missing errors and remove incompatible

*  Fix NodeOperationError in incompatible nodes

* 🔧 Adjust error handling in missed nodes

PayPal, FileMaker, Reddit, Taiga and Facebook Graph API nodes

* 🔨 Adjust Strava Trigger node error handling

* 🔨 Adjust AWS nodes error handling

* 🔨 Remove duplicate instantiation of NodeApiError

* 🐛 fix strava trigger node error handling

* Add XML parsing to NodeApiError constructor (#1633)

* 🐛 Remove type annotation from catch variable

*  Add XML parsing to NodeApiError

*  Simplify error handling in Rekognition node

*  Pass in XML flag in generic functions

* 🔥 Remove try/catch wrappers at call sites

* 🔨 Refactor setting description from XML

* 🔨 Refactor let to const in resource loaders

*  Find property in parsed XML

*  Change let to const

* 🔥 Remove unneeded try/catch block

* 👕 Fix linting issues

* 🐛 Fix errors from merge conflict resolution

*  Add custom errors to latest contributions

* 👕 Fix linting issues

*  Refactor MongoDB helpers for custom errors

* 🐛 Correct custom error type

*  Apply feedback to A nodes

*  Apply feedback to missed A node

*  Apply feedback to B-D nodes

*  Apply feedback to E-F nodes

*  Apply feedback to G nodes

*  Apply feedback to H-L nodes

*  Apply feedback to M nodes

*  Apply feedback to P nodes

*  Apply feedback to R nodes

*  Apply feedback to S nodes

*  Apply feedback to T nodes

*  Apply feedback to V-Z nodes

*  Add HTTP code to iterable node error

* 🔨 Standardize e as error

* 🔨 Standardize err as error

*  Fix error handling for non-standard nodes

Co-authored-by: Ben Hesseldieck <b.hesseldieck@gmail.com>

Co-authored-by: Ben Hesseldieck <b.hesseldieck@gmail.com>
Co-authored-by: Ben Hesseldieck <1849459+BHesseldieck@users.noreply.github.com>
2021-04-16 18:33:36 +02:00

273 lines
6.4 KiB
TypeScript

import { IExecuteFunctions } from 'n8n-core';
import {
IDataObject,
INodeExecutionData,
INodeType,
INodeTypeDescription,
NodeOperationError,
} from 'n8n-workflow';
import * as pgPromise from 'pg-promise';
import { pgInsert, pgQuery, pgUpdate } from './Postgres.node.functions';
export class Postgres implements INodeType {
description: INodeTypeDescription = {
displayName: 'Postgres',
name: 'postgres',
icon: 'file:postgres.png',
group: ['input'],
version: 1,
description: 'Gets, add and update data in Postgres.',
defaults: {
name: 'Postgres',
color: '#336791',
},
inputs: ['main'],
outputs: ['main'],
credentials: [
{
name: 'postgres',
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 id < 40',
required: true,
description: 'The SQL query to execute.',
},
// ----------------------------------
// insert
// ----------------------------------
{
displayName: 'Schema',
name: 'schema',
type: 'string',
displayOptions: {
show: {
operation: ['insert'],
},
},
default: 'public',
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:int,name:text,description',
description:
'Comma separated list of the properties which should used as columns for the new rows.<br>You can use type casting with colons (:) like id:int.',
},
{
displayName: 'Return Fields',
name: 'returnFields',
type: 'string',
displayOptions: {
show: {
operation: ['insert'],
},
},
default: '*',
description: 'Comma separated list of the fields that the operation will return',
},
// ----------------------------------
// update
// ----------------------------------
{
displayName: 'Schema',
name: 'schema',
type: 'string',
displayOptions: {
show: {
operation: ['update'],
},
},
default: 'public',
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:
'Name of the property 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:text,description',
description:
'Comma separated list of the properties which should used as columns for rows to update.<br>You can use type casting with colons (:) like id:int.',
},
],
};
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
const credentials = this.getCredentials('postgres');
if (credentials === undefined) {
throw new NodeOperationError(this.getNode(), 'No credentials got returned!');
}
const pgp = pgPromise();
const config: IDataObject = {
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,
};
if (credentials.allowUnauthorizedCerts === true) {
config.ssl = {
rejectUnauthorized: false,
};
} else {
config.ssl = !['disable', undefined].includes(credentials.ssl as string | undefined);
config.sslmode = (credentials.ssl as string) || 'disable';
}
const db = pgp(config);
let returnItems = [];
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);
returnItems = this.helpers.returnJsonArray(queryResult as IDataObject[]);
} else if (operation === 'insert') {
// ----------------------------------
// insert
// ----------------------------------
const [insertData, insertItems] = await pgInsert(this.getNodeParameter, pgp, db, items);
// Add the id to the data
for (let i = 0; i < insertData.length; i++) {
returnItems.push({
json: {
...insertData[i],
...insertItems[i],
},
});
}
} else if (operation === 'update') {
// ----------------------------------
// update
// ----------------------------------
const updateItems = await pgUpdate(this.getNodeParameter, pgp, db, items);
returnItems = this.helpers.returnJsonArray(updateItems);
} 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);
}
}