mirror of
https://github.com/n8n-io/n8n.git
synced 2024-11-10 22:54:05 -08:00
527 lines
13 KiB
TypeScript
527 lines
13 KiB
TypeScript
import { IExecuteFunctions } from 'n8n-core';
|
|
import {
|
|
GenericValue,
|
|
IDataObject,
|
|
INodeExecutionData,
|
|
INodeType,
|
|
INodeTypeDescription,
|
|
} from 'n8n-workflow';
|
|
|
|
import { set } from 'lodash';
|
|
import * as redis from 'redis';
|
|
|
|
import * as util from 'util';
|
|
|
|
export class Redis implements INodeType {
|
|
description: INodeTypeDescription = {
|
|
displayName: 'Redis',
|
|
name: 'redis',
|
|
icon: 'file:redis.png',
|
|
group: ['input'],
|
|
version: 1,
|
|
description: 'Gets, sends data to Redis and receives generic information.',
|
|
defaults: {
|
|
name: 'Redis',
|
|
color: '#0033AA',
|
|
},
|
|
inputs: ['main'],
|
|
outputs: ['main'],
|
|
credentials: [
|
|
{
|
|
name: 'redis',
|
|
required: true,
|
|
}
|
|
],
|
|
properties: [
|
|
{
|
|
displayName: 'Operation',
|
|
name: 'operation',
|
|
type: 'options',
|
|
options: [
|
|
{
|
|
name: 'Delete',
|
|
value: 'delete',
|
|
description: 'Deletes a key from Redis.',
|
|
},
|
|
{
|
|
name: 'Get',
|
|
value: 'get',
|
|
description: 'Returns the value of a key from Redis.',
|
|
},
|
|
{
|
|
name: 'Info',
|
|
value: 'info',
|
|
description: 'Returns generic information about the Redis instance.',
|
|
},
|
|
{
|
|
name: 'Keys',
|
|
value: 'keys',
|
|
description: 'Returns all the keys matching a pattern.',
|
|
},
|
|
{
|
|
name: 'Set',
|
|
value: 'set',
|
|
description: 'Sets the value of a key in redis.',
|
|
},
|
|
],
|
|
default: 'info',
|
|
description: 'The operation to perform.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// get
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Name',
|
|
name: 'propertyName',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'get'
|
|
],
|
|
},
|
|
},
|
|
default: 'propertyName',
|
|
required: true,
|
|
description: 'Name of the property to write received data to.<br />Supports dot-notation.<br />Example: "data.person[0].name"',
|
|
},
|
|
{
|
|
displayName: 'Key',
|
|
name: 'key',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'delete'
|
|
],
|
|
},
|
|
},
|
|
default: '',
|
|
required: true,
|
|
description: 'Name of the key to delete from Redis.',
|
|
},
|
|
{
|
|
displayName: 'Key',
|
|
name: 'key',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'get'
|
|
],
|
|
},
|
|
},
|
|
default: '',
|
|
required: true,
|
|
description: 'Name of the key to get from Redis.',
|
|
},
|
|
{
|
|
displayName: 'Key Type',
|
|
name: 'keyType',
|
|
type: 'options',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'get'
|
|
],
|
|
},
|
|
},
|
|
options: [
|
|
{
|
|
name: 'Automatic',
|
|
value: 'automatic',
|
|
description: 'Requests the type before requesting the data (slower).',
|
|
},
|
|
{
|
|
name: 'Hash',
|
|
value: 'hash',
|
|
description: 'Data in key is of type "hash".',
|
|
},
|
|
{
|
|
name: 'String',
|
|
value: 'string',
|
|
description: 'Data in key is of type "string".',
|
|
},
|
|
{
|
|
name: 'List',
|
|
value: 'list',
|
|
description: 'Data in key is of type "lists".',
|
|
},
|
|
{
|
|
name: 'Sets',
|
|
value: 'sets',
|
|
description: 'Data in key is of type "sets".',
|
|
},
|
|
],
|
|
default: 'automatic',
|
|
description: 'The type of the key to get.',
|
|
},
|
|
|
|
{
|
|
displayName: 'Options',
|
|
name: 'options',
|
|
type: 'collection',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'get'
|
|
],
|
|
},
|
|
},
|
|
placeholder: 'Add Option',
|
|
default: {},
|
|
options: [
|
|
{
|
|
displayName: 'Dot Notation',
|
|
name: 'dotNotation',
|
|
type: 'boolean',
|
|
default: true,
|
|
description: `By default does dot-notation get used in property names.<br />
|
|
This means that "a.b" will set the property "b" underneath "a" so { "a": { "b": value} }.<br />
|
|
If that is not intended this can be deactivated, it will then set { "a.b": value } instead.
|
|
`,
|
|
},
|
|
],
|
|
},
|
|
|
|
// ----------------------------------
|
|
// keys
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Key Pattern',
|
|
name: 'keyPattern',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'keys'
|
|
],
|
|
},
|
|
},
|
|
default: '',
|
|
required: true,
|
|
description: 'The key pattern for the keys to return.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// set
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Key',
|
|
name: 'key',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'set'
|
|
],
|
|
},
|
|
},
|
|
default: '',
|
|
required: true,
|
|
description: 'Name of the key to set in Redis.',
|
|
},
|
|
{
|
|
displayName: 'Value',
|
|
name: 'value',
|
|
type: 'string',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'set'
|
|
],
|
|
},
|
|
},
|
|
default: '',
|
|
description: 'The value to write in Redis.',
|
|
},
|
|
{
|
|
displayName: 'Key Type',
|
|
name: 'keyType',
|
|
type: 'options',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'set'
|
|
],
|
|
},
|
|
},
|
|
options: [
|
|
{
|
|
name: 'Automatic',
|
|
value: 'automatic',
|
|
description: 'Tries to figure out the type automatically depending on the data.',
|
|
},
|
|
{
|
|
name: 'Hash',
|
|
value: 'hash',
|
|
description: 'Data in key is of type "hash".',
|
|
},
|
|
{
|
|
name: 'String',
|
|
value: 'string',
|
|
description: 'Data in key is of type "string".',
|
|
},
|
|
{
|
|
name: 'List',
|
|
value: 'list',
|
|
description: 'Data in key is of type "lists".',
|
|
},
|
|
{
|
|
name: 'Sets',
|
|
value: 'sets',
|
|
description: 'Data in key is of type "sets".',
|
|
},
|
|
],
|
|
default: 'automatic',
|
|
description: 'The type of the key to set.',
|
|
},
|
|
|
|
{
|
|
displayName: 'Expire',
|
|
name: 'expire',
|
|
type: 'boolean',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'set'
|
|
],
|
|
},
|
|
},
|
|
default: false,
|
|
description: 'Set a timeout on key ?',
|
|
},
|
|
|
|
{
|
|
displayName: 'TTL',
|
|
name: 'ttl',
|
|
type: 'number',
|
|
typeOptions: {
|
|
minValue: 1,
|
|
},
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'set'
|
|
],
|
|
expire: [
|
|
true,
|
|
],
|
|
},
|
|
},
|
|
default: 60,
|
|
description: 'Number of seconds before key expiration.',
|
|
}
|
|
]
|
|
};
|
|
|
|
|
|
execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
|
|
// Parses the given value in a number if it is one else returns a string
|
|
function getParsedValue(value: string): string | number {
|
|
if (value.match(/^[\d\.]+$/) === null) {
|
|
// Is a string
|
|
return value;
|
|
} else {
|
|
// Is a number
|
|
return parseFloat(value);
|
|
}
|
|
}
|
|
|
|
// Converts the Redis Info String into an object
|
|
function convertInfoToObject(stringData: string): IDataObject {
|
|
const returnData: IDataObject = {};
|
|
|
|
let key: string, value: string;
|
|
for (const line of stringData.split('\n')) {
|
|
if (['#', ''].includes(line.charAt(0))) {
|
|
continue;
|
|
}
|
|
[key, value] = line.split(':');
|
|
if (key === undefined || value === undefined) {
|
|
continue;
|
|
}
|
|
value = value.trim();
|
|
|
|
if (value.includes('=')) {
|
|
returnData[key] = {};
|
|
let key2: string, value2: string;
|
|
for (const keyValuePair of value.split(',')) {
|
|
[key2, value2] = keyValuePair.split('=');
|
|
(returnData[key] as IDataObject)[key2] = getParsedValue(value2);
|
|
}
|
|
} else {
|
|
returnData[key] = getParsedValue(value);
|
|
}
|
|
}
|
|
|
|
return returnData;
|
|
}
|
|
|
|
async function getValue(client: redis.RedisClient, keyName: string, type?: string) {
|
|
if (type === undefined || type === 'automatic') {
|
|
// Request the type first
|
|
const clientType = util.promisify(client.type).bind(client);
|
|
type = await clientType(keyName);
|
|
}
|
|
|
|
if (type === 'string') {
|
|
const clientGet = util.promisify(client.get).bind(client);
|
|
return await clientGet(keyName);
|
|
} else if (type === 'hash') {
|
|
const clientHGetAll = util.promisify(client.hgetall).bind(client);
|
|
return await clientHGetAll(keyName);
|
|
} else if (type === 'list') {
|
|
const clientLRange = util.promisify(client.lrange).bind(client);
|
|
return await clientLRange(keyName, 0, -1);
|
|
} else if (type === 'sets') {
|
|
const clientSMembers = util.promisify(client.smembers).bind(client);
|
|
return await clientSMembers(keyName);
|
|
}
|
|
}
|
|
|
|
|
|
async function setValue(client: redis.RedisClient, keyName: string, value: string | number | object | string[] | number[], expire: boolean, ttl: number, type?: string) {
|
|
if (type === undefined || type === 'automatic') {
|
|
// Request the type first
|
|
if (typeof value === 'string') {
|
|
type = 'string';
|
|
} else if (Array.isArray(value)) {
|
|
type = 'list';
|
|
} else if (typeof value === 'object') {
|
|
type = 'hash';
|
|
} else {
|
|
throw new Error('Could not identify the type to set. Please set it manually!');
|
|
}
|
|
}
|
|
|
|
if (type === 'string') {
|
|
const clientSet = util.promisify(client.set).bind(client);
|
|
await clientSet(keyName, value.toString());
|
|
} else if (type === 'hash') {
|
|
const clientHset = util.promisify(client.hset).bind(client);
|
|
for (const key of Object.keys(value)) {
|
|
// @ts-ignore
|
|
await clientHset(keyName, key, (value as IDataObject)[key]!.toString());
|
|
}
|
|
} else if (type === 'list') {
|
|
const clientLset = util.promisify(client.lset).bind(client);
|
|
for (let index = 0; index < (value as string[]).length; index++) {
|
|
await clientLset(keyName, index, (value as IDataObject)[index]!.toString());
|
|
}
|
|
}
|
|
|
|
if (expire === true) {
|
|
const clientExpire = util.promisify(client.expire).bind(client);
|
|
await clientExpire(keyName, ttl);
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
return new Promise((resolve, reject) => {
|
|
// TODO: For array and object fields it should not have a "value" field it should
|
|
// have a parameter field for a path. Because it is not possible to set
|
|
// array, object via parameter directly (should maybe be possible?!?!)
|
|
// Should maybe have a parameter which is JSON.
|
|
const credentials = this.getCredentials('redis');
|
|
|
|
if (credentials === undefined) {
|
|
throw new Error('No credentials got returned!');
|
|
}
|
|
|
|
const redisOptions: redis.ClientOpts = {
|
|
host: credentials.host as string,
|
|
port: credentials.port as number,
|
|
};
|
|
|
|
if (credentials.password) {
|
|
redisOptions.password = credentials.password as string;
|
|
}
|
|
|
|
const client = redis.createClient(redisOptions);
|
|
|
|
const operation = this.getNodeParameter('operation', 0) as string;
|
|
|
|
client.on('error', (err: Error) => {
|
|
reject(err);
|
|
});
|
|
|
|
client.on('ready', async (err: Error | null) => {
|
|
|
|
if (operation === 'info') {
|
|
const clientInfo = util.promisify(client.info).bind(client);
|
|
const result = await clientInfo();
|
|
|
|
resolve(this.prepareOutputData([{ json: convertInfoToObject(result as unknown as string) }]));
|
|
client.quit();
|
|
|
|
} else if (['delete', 'get', 'keys', 'set'].includes(operation)) {
|
|
const items = this.getInputData();
|
|
const returnItems: INodeExecutionData[] = [];
|
|
|
|
let item: INodeExecutionData;
|
|
for (let itemIndex = 0; itemIndex < items.length; itemIndex++) {
|
|
item = { json: {} };
|
|
|
|
if (operation === 'delete') {
|
|
const keyDelete = this.getNodeParameter('key', itemIndex) as string;
|
|
|
|
const clientDel = util.promisify(client.del).bind(client);
|
|
// @ts-ignore
|
|
await clientDel(keyDelete);
|
|
returnItems.push(items[itemIndex]);
|
|
} else if (operation === 'get') {
|
|
const propertyName = this.getNodeParameter('propertyName', itemIndex) as string;
|
|
const keyGet = this.getNodeParameter('key', itemIndex) as string;
|
|
const keyType = this.getNodeParameter('keyType', itemIndex) as string;
|
|
|
|
const value = await getValue(client, keyGet, keyType) || null;
|
|
|
|
const options = this.getNodeParameter('options', itemIndex, {}) as IDataObject;
|
|
|
|
if (options.dotNotation === false) {
|
|
item.json[propertyName] = value;
|
|
} else {
|
|
set(item.json, propertyName, value);
|
|
}
|
|
|
|
returnItems.push(item);
|
|
} else if (operation === 'keys') {
|
|
const keyPattern = this.getNodeParameter('keyPattern', itemIndex) as string;
|
|
|
|
const clientKeys = util.promisify(client.keys).bind(client);
|
|
const keys = await clientKeys(keyPattern);
|
|
|
|
const promises: {
|
|
[key: string]: GenericValue;
|
|
} = {};
|
|
|
|
for (const keyName of keys) {
|
|
promises[keyName] = await getValue(client, keyName);
|
|
}
|
|
|
|
for (const keyName of keys) {
|
|
item.json[keyName] = await promises[keyName];
|
|
}
|
|
returnItems.push(item);
|
|
} else if (operation === 'set') {
|
|
const keySet = this.getNodeParameter('key', itemIndex) as string;
|
|
const value = this.getNodeParameter('value', itemIndex) as string;
|
|
const keyType = this.getNodeParameter('keyType', itemIndex) as string;
|
|
const expire = this.getNodeParameter('expire', itemIndex, false) as boolean;
|
|
const ttl = this.getNodeParameter('ttl', itemIndex, -1) as number;
|
|
|
|
await setValue(client, keySet, value, expire, ttl, keyType);
|
|
returnItems.push(items[itemIndex]);
|
|
}
|
|
}
|
|
|
|
resolve(this.prepareOutputData(returnItems));
|
|
}
|
|
});
|
|
});
|
|
}
|
|
}
|