Node.js

Docusign Refresh OAuth2 Access Token

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Demonstrates how to refresh a Docusign OAuth2 access token. The refresh does not require user interaction via a web browser. If an access token expires (typically with a 401 response code), a new access token can be automatically obtained by using the code in this example. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    // saved by this example: Get Docusign OAuth2 Access Token

    var jsonToken = new chilkat.JsonObject();
    success = jsonToken.LoadFile("qa_data/tokens/docusign.json");
    if (success !== true) {
        console.log("Failed to load docusign.json");
        return;
    }

    // The access token JSON looks like this:

    // {
    //   "access_token": "eyJ0eXA....YQyig",
    //   "token_type": "Bearer",
    //   "refresh_token": "eyJ0eXA....auE3eHKg",
    //   "expires_in": 28800
    // }

    var oauth2 = new chilkat.OAuth2();

    // For the developer sandbox environment, the token endpoint is https://account-d.docusign.com/oauth/token
    // For the production platform, the token endpoint is https://account.docusign.com/oauth/token
    oauth2.TokenEndpoint = "https://account-d.docusign.com/oauth/token";

    // Replace these with actual values.
    // The client ID is also known as the "integration key" in Docusign.
    oauth2.ClientId = "MY_DOCUSIGN_CLIENT_ID";
    // This is your secret key for the authorization code grant.
    oauth2.ClientSecret = "MY_DOCUSIGN_CLIENT_SECRET";

    // Get the "refresh_token"
    oauth2.RefreshToken = jsonToken.StringOf("refresh_token");

    // Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken();
    if (success !== true) {
        console.log(oauth2.LastErrorText);
        return;
    }

    console.log("New access token: " + oauth2.AccessToken);
    console.log("New refresh token: " + oauth2.RefreshToken);

    // Update the JSON with the new tokens.
    jsonToken.UpdateString("access_token",oauth2.AccessToken);
    jsonToken.UpdateString("refresh_token",oauth2.RefreshToken);

    // Save the new JSON access token response to a file.
    var sbJson = new chilkat.StringBuilder();
    jsonToken.EmitCompact = false;
    jsonToken.EmitSb(sbJson);
    sbJson.WriteFile("qa_data/tokens/docusign.json","utf-8",false);

    console.log("OAuth2 authorization granted!");
    console.log("New Access Token = " + oauth2.AccessToken);

}

chilkatExample();