Execute Custom Query with PostgreSQL API on New Channel Updates (Instant) from Telegram Bot API

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New Channel Updates (Instant) from the Telegram Bot API

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Execute Custom Query with the PostgreSQL API

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Getting Started#

This integration creates a workflow with a Telegram Bot trigger and PostgreSQL action. When you configure and deploy the workflow, it will run on Pipedream's servers 24x7 for free.

Select this integration
Configure the New Channel Updates (Instant) trigger
1. Connect your Telegram Bot account
Configure the Execute Custom Query action
1. Connect your PostgreSQL account
2. Configure SQL Query
3. Optional- Configure Values
4. Configure Reject Unauthorized
Deploy the workflow
Send a test event to validate your setup
Turn on the trigger

Details#

This integration uses pre-built, source-available components from Pipedream's GitHub repo. These components are developed by Pipedream and the community, and verified and maintained by Pipedream.

To contribute an update to an existing component or create a new component, create a PR on GitHub. If you're new to Pipedream component development, you can start with quickstarts for trigger span and action development, and then review the component API reference.

Trigger#

New Channel Updates (Instant) on Telegram Bot

Description:Emit new event each time a channel post is created or updated.

Version:0.1.4

Key:telegram_bot_api-channel-updates

View on GitHub

Telegram Bot Overview#

With the Telegram Bot API, you can build bots that perform a variety of tasks,
including:

Sending and receiving messages
Social networking
Content management
File sharing
Location sharing
Bot administration
And more!

Trigger Code#

import base from "../common/webhooks.mjs";
import sampleEmit from "./test-event.mjs";

export default {
  ...base,
  key: "telegram_bot_api-channel-updates",
  name: "New Channel Updates (Instant)",
  description: "Emit new event each time a channel post is created or updated.",
  version: "0.1.4",

  type: "source",
  dedupe: "unique",
  methods: {
    ...base.methods,
    getEventTypes() {
      return [
        "channel_post",
        "edited_channel_post",
      ];
    },
    getMeta(event, channelPost) {
      return {
        id: event.update_id,
        summary: `${channelPost.chat.title} - ${channelPost.text}`,
        ts: new Date(channelPost.edit_date ?? channelPost.date),
      };
    },
    processEvent(event) {
      const channelPost = event.edited_channel_post ?? event.channel_post;

      if (!channelPost?.chat) {
        throw new Error(`Expected event to contain a chat, but received: ${JSON.stringify(event)}`);
      }

      this.$emit(event, this.getMeta(event, channelPost));
    },
  },
  sampleEmit,
};

Trigger Configuration#

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI and CLI.

Label	Prop	Type	Description
Telegram Bot	`telegramBotApi`	`app`	This component uses the Telegram Bot app.
N/A	`db`	`$.service.db`	This component uses `$.service.db` to maintain state between executions.
N/A	`http`	`$.interface.http`	This component uses `$.interface.http` to generate a unique URL when the component is first instantiated. Each request to the URL will trigger the `run()` method of the component.

Trigger Authentication#

Telegram Bot uses API keys for authentication. When you connect your Telegram Bot account, Pipedream securely stores the keys so you can easily authenticate to Telegram Bot APIs in both code and no-code steps.

To use the Telegram Bot API, you must first create a new bot by chatting with the BotFather.

After you create your bot, copy the bot token and add it below.

About Telegram Bot#

Telegram is a cloud-based instant messaging and voice over IP service

Action#

Execute Custom Query on PostgreSQL

Description:Executes a custom query you provide. [See Docs](https://node-postgres.com/features/queries)

Version:0.0.9

Key:postgresql-execute-custom-query

View on GitHub

PostgreSQL Overview#

Assuming you want a few paragraphs on what you can do with the PostgreSQL API:

The following examples demonstrate some of the things that can be done with the
PostgreSQL API:

Developing a custom storage engine for PostgreSQL
Adding a new data type to PostgreSQL
Creating a new function for PostgreSQL
Building a graphical user interface for PostgreSQL
And much more!

Action Code#

import postgresql from "../../postgresql.app.mjs";

export default {
  name: "Execute Custom Query",
  key: "postgresql-execute-custom-query",
  description: "Executes a custom query you provide. [See Docs](https://node-postgres.com/features/queries)",
  version: "0.0.9",
  type: "action",
  props: {
    postgresql,
    query: {
      propDefinition: [
        postgresql,
        "query",
      ],
    },
    values: {
      propDefinition: [
        postgresql,
        "values",
      ],
    },
    rejectUnauthorized: {
      propDefinition: [
        postgresql,
        "rejectUnauthorized",
      ],
    },
  },
  async run({ $ }) {
    const {
      query,
      values = [],
      rejectUnauthorized,
    } = this;

    if (!Array.isArray(values)) {
      throw new Error("No valid values provided. The values property must be an array.");
    }

    const numberOfValues = query?.match(/\$/g)?.length || 0;
    if (values.length !== numberOfValues) {
      throw new Error("The number of values provided does not match the number of values in the query.");
    }

    try {
      const res = await this.postgresql.executeQuery({
        text: query,
        values,
      }, rejectUnauthorized);
      $.export("$summary", "Successfully executed query");
      return res;
    } catch (error) {
      throw new Error(`
        Query not executed due to an error. ${error}.
        This could be because SSL verification failed, consider changing the Reject Unauthorized prop and try again.
      `);
    }
  },
};

Action Configuration#

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI.

Label	Prop	Type	Description
PostgreSQL	`postgresql`	`app`	This component uses the PostgreSQL app.
SQL Query	`query`	`string`	Your custom SQL Query using `$1`, `$2`... to represent values (eg. `INSERT INTO users(name, email) VALUES($1, $2)`
Values	`values`	`string[]`	List of values represented in your SQL Query above
Reject Unauthorized	`rejectUnauthorized`	`boolean`	If `true`, the server certificate is verified against the list of supplied CAs. If you encounter the error `Connection terminated unexpectedly`, try setting this prop to `false`.

Action Authentication#

PostgreSQL uses API keys for authentication. When you connect your PostgreSQL account, Pipedream securely stores the keys so you can easily authenticate to PostgreSQL APIs in both code and no-code steps.

Before you connect to your PostgreSQL database from Pipedream, please make sure your database is either:

Accessible from the public internet (You may need to add a firewall rule on 0.0.0.0/0 on port 5432), or
Accessible from an SSH server that you route PostgreSQL requests through

After that, enter the following values: