Ballerina Docusign eSignature Connector

DocuSign is a digital transaction management platform that enables users to securely sign, send, and manage documents electronically.

The Ballerina DocuSign eSignature connector integrates with the DocuSign platform, provides APIs for tasks such as sending documents for signature, managing envelopes, and retrieving status updates, enhancing the efficiency of electronic signature processes within Ballerina applications. It supports DocuSign eSignature API V2.1.

Setup guide

To utilize the eSignature connector, you must have access to the DocuSign REST API through a DocuSign account.

Step 1: Create a DocuSign account

In order to use the DocuSign eSignature connector, you need to first create the DocuSign credentials for the connector to interact with DocuSign.

• You can create an account for free at the Developer Center.

  

Step 2: Create integration key and secret key

1. Create an integration key: Visit the Apps and Keys page on DocuSign. Click on Add App and Integration Key, provide a name for the app, and click Create App. This will generate an Integration Key.

   

2. Generate a secret key: Under the Authentication section, click on Add Secret Key. This will generate a secret Key. Make sure to copy and save both the Integration Key and Secret Key.

   

Step 3: Generate refresh token

1. Add a redirect URI: Click on Add URI and enter your redirect URI (e.g., http://www.example.com/callback).

   

2. Generate the encoded key: The Encoded Key is a base64 encoded string of your Integration key and Secret Key in the format {IntegrationKey:SecretKey}. You can generate this in your web browser's console using the btoa() function: btoa('IntegrationKey:SecretKey'). You can either generate the encoded key from an online base64 encoder.

3. Get the authorization code: Visit the following URL in your web browser, replacing {iKey} with your Integration Key and {redirectUri} with your redirect URI.

   https://account-d.docusign.com/oauth/auth?response_type=code&scope=signature%20impersonation&client_id={iKey}&redirect_uri={redirectUri}

   This will redirect you to your Redirect URI with a code query parameter. This is your authorization code.

4. Get the refresh token: Use the following curl command to get the refresh token, replacing {encodedKey} with your Encoded Key and {codeFromUrl} with your authorization code.

   curl --location 'https://account-d.docusign.com/oauth/token' \
   --header 'Authorization: Basic {encodedKey}' \
   --header 'Content-Type: application/x-www-form-urlencoded' \
   --data-urlencode 'code={codeFromUrl}' \
   --data-urlencode 'grant_type=authorization_code'

   The response will contain your refresh token. Use https://account-d.docusign.com/oauth/token as the refresh URL.

Remember to replace {IntegrationKey:SecretKey}, {iKey}, {redirectUri}, {encodedKey}, and {codeFromUrl} with your actual values.

Above is about using the DocuSign eSignature APIs in the developer mode. If your app is ready to go live, you need to follow the guidelines given here to make it work.

Quickstart

To use the DocuSign eSignature connector in your Ballerina project, modify the .bal file as follows.

Step 1: Import the module

Import the ballerinax/docusign.dsesign module into your Ballerina project.

import ballerinax/docusign.dsesign;

Step 2: Instantiate a new connector

Create a dsesign:ConnectionConfig with the obtained OAuth2.0 tokens and initialize the connector with it.

configurable string clientId = ?;
configurable string clientSecret = ?;
configurable string refreshToken = ?;
configurable string refreshUrl = ?;

dsesign:Client docusignClient = check new({
    auth: {
        clientId,
        clientSecret,
        refreshToken,
        refreshUrl
    }
});

Step 3: Invoke the connector operation

You can now utilize the operations available within the connector.

public function main() returns error? {

    // Creates an envelope
    dsesign:EnvelopeSummary newEnvelope = check docusignClient->/accounts/[accountId]/envelopes.post({
        documents: [
            {
                documentBase64: "base64-encoded-pdf-file",
                documentId: "1",
                fileExtension: "pdf",
                name: "document"
            }
        ],
        emailSubject: "Simple Signing Example 02",
        recipients: {
            signers: [
                {
                    email: "[email protected]",
                    name: "randomtester12",
                    recipientId: "12"
                }
            ]
        },
        status: "sent"
    });

    // Retrieves specific sets of envelopes from a given date
    dsesign:EnvelopesInformation envelope = check docusignClient->/accounts/[accountId]/envelopes(from_date = "2024-01-01T00:00Z");
}

Hint: To apply a value to the documentBase64 field, you can either use an online tool designed to convert a PDF file into a base64-encoded string, or you can refer to the provided example code

Step 4: Run the Ballerina application

Use the following command to compile and run the Ballerina program.

bal run

Examples

The DocuSign eSignature connector provides practical examples illustrating usage in various scenarios. Explore these examples.

1. Send documents for esignatures This example shows how to use DocuSign eSignature APIs to send envelope to recipients to add their respective esignatures to documents in the envelope.

2. Create esignatures This example shows how to create a eSignature for your DocuSign account.

Issues and projects

The Issues and Projects tabs are disabled for this repository as this is part of the Ballerina library. To report bugs, request new features, start new discussions, view project boards, etc., visit the Ballerina library parent repository.

This repository only contains the source code for the package.

Building from the source

Prerequisites

1. Download and install Java SE Development Kit (JDK) version 17. You can download it from either of the following sources:

   • Oracle JDK
   • OpenJDK

   Note: After installation, remember to set the JAVA_HOME environment variable to the directory where JDK was installed.

2. Download and install Ballerina Swan Lake.

3. Download and install Docker.

   Note: Ensure that the Docker daemon is running before executing any tests.

4. Generate a Github access token with read package permissions, then set the following env variables:

   export packageUser=<Your GitHub Username>
   export packagePAT=<GitHub Personal Access Token>

Build options

Execute the commands below to build from the source.

1. To build the package:

   ./gradlew clean build

2. To run the tests:

   ./gradlew clean test

3. To build the without the tests:

   ./gradlew clean build -x test

4. To debug package with a remote debugger:

   ./gradlew clean build -Pdebug=<port>

5. To debug with Ballerina language:

   ./gradlew clean build -PbalJavaDebug=<port>

6. Publish the generated artifacts to the local Ballerina central repository:

   ./gradlew clean build -PpublishToLocalCentral=true

7. Publish the generated artifacts to the Ballerina central repository:

   ./gradlew clean build -PpublishToCentral=true

Contributing to Ballerina

As an open source project, Ballerina welcomes contributions from the community.

For more information, go to the contribution guidelines.

Code of conduct

All contributors are encouraged to read the Ballerina Code of Conduct.

Useful links

• Discuss code changes of the Ballerina project in [email protected].
• Chat live with us via our Discord server.
• Post all technical questions on Stack Overflow with the #ballerina tag.