← PostgreSQL + Go integrations

Run Go Code with Go API on New Row Custom Query from PostgreSQL API

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Trigger workflow on
New Row Custom Query from the PostgreSQL API
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Run Go Code with the Go API
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Getting Started

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

  1. Select this integration
  2. Configure the New Row Custom Query trigger
    1. Connect your PostgreSQL account
    2. Configure Polling Interval
    3. Configure Reject Unauthorized
    4. Select a Schema
    5. Select a Table
    6. Select a Column
    7. Configure SQL Query
    8. Optional- Configure Values
  3. Configure the Run Go Code action
    1. Connect your Go account
  4. Deploy the workflow
  5. Send a test event to validate your setup
  6. 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

Description:Emit new event when new rows are returned from a custom query that you provide. [See Docs](https://node-postgres.com/features/queries)
Version:0.0.10
Key:postgresql-new-row-custom-query

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!

Trigger Code

import common from "../common.mjs";

export default {
  ...common,
  name: "New Row Custom Query",
  key: "postgresql-new-row-custom-query",
  description: "Emit new event when new rows are returned from a custom query that you provide. [See Docs](https://node-postgres.com/features/queries)",
  version: "0.0.10",
  type: "source",
  dedupe: "unique",
  props: {
    ...common.props,
    schema: {
      propDefinition: [
        common.props.postgresql,
        "schema",
        (c) => ({
          rejectUnauthorized: c.rejectUnauthorized,
        }),
      ],
    },
    table: {
      propDefinition: [
        common.props.postgresql,
        "table",
        (c) => ({
          schema: c.schema,
          rejectUnauthorized: c.rejectUnauthorized,
        }),
      ],
    },
    column: {
      propDefinition: [
        common.props.postgresql,
        "column",
        (c) => ({
          table: c.table,
          schema: c.schema,
          rejectUnauthorized: c.rejectUnauthorized,
        }),
      ],
    },
    query: {
      propDefinition: [
        common.props.postgresql,
        "query",
      ],
    },
    values: {
      propDefinition: [
        common.props.postgresql,
        "values",
      ],
    },
  },
  methods: {
    ...common.methods,
    generateMeta(row, column) {
      return {
        id: row[column],
        summary: "New Row",
        ts: Date.now(),
      };
    },
  },
  async run() {
    const {
      schema,
      table,
      column,
      query,
      values = [],
    } = 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.");
    }

    const isColumnUnique = await this.isColumnUnique(schema, table, column);
    if (!isColumnUnique) {
      throw new Error("The column selected contains duplicate values. Column must be unique");
    }

    const rows = await this.postgresql.executeQuery({
      text: query,
      values,
    }, this.rejectUnauthorized);
    for (const row of rows) {
      const meta = this.generateMeta(row, column);
      this.$emit(row, meta);
    }
  },
};

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.
LabelPropTypeDescription
PostgreSQLpostgresqlappThis component uses the PostgreSQL app.
N/Adb$.service.dbThis component uses $.service.db to maintain state between executions.
Polling Intervaltimer$.interface.timer

Pipedream will poll the API on this schedule

Reject UnauthorizedrejectUnauthorizedboolean

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.

SchemaschemastringSelect a value from the drop down menu.
TabletablestringSelect a value from the drop down menu.
ColumncolumnstringSelect a value from the drop down menu.
SQL Queryquerystring

Your custom SQL Query using $1, $2... to represent values (eg. INSERT INTO users(name, email) VALUES($1, $2)

Valuesvaluesstring[]

List of values represented in your SQL Query above

Trigger 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:

  1. Accessible from the public internet (You may need to add a firewall rule on 0.0.0.0/0 on port 5432), or
  2. Accessible from a static IP that you've configured from a VPC in Pipedream, and enabled the workflow to connect through that VPC

About PostgreSQL

PostgreSQL is a free and open-source relational database management system emphasizing extensibility and SQL compliance.

Action

Description:Run any Go code and use any Go package available with a simple import. Refer to the [Pipedream Go docs](https://pipedream.com/docs/code/go) to learn more.
Version:0.0.2
Key:go-run-go-code

Action Code

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

export default {
  name: "Run Go Code",
  version: "0.0.2",
  key: "go-run-go-code",
  description: "Run any Go code and use any Go package available with a simple import. Refer to the [Pipedream Go docs](https://pipedream.com/docs/code/go) to learn more.",
  props: {
    go,
  },
  type: "action",
  methods: {},
  async run({ $ }) {
    // Placeholder action for Go code app
  },
};

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.

LabelPropTypeDescription
GogoappThis component uses the Go app.

Action Authentication

The Go API does not require authentication.

About Go

Anything you can do in Go, you can do in a Pipedream Workflow. You can use any of Go packages available with a simple import.

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