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REST API Authentication On Atlassian using Meetup as OAuth Provider

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Using this app, you can authenticate the Application APIs using any third party OAuth/OIDC provider or API Tokens. The app supports Azure AD, Keycloak, Okta, AWS Cognito, Google, Github, Slack, Gitlab, Facebook and any custom provider.

Atlassian provides REST APIs to perform a number of operations such as Create Page, Delete Page, Add Comment, Create Space, etc. However, it supports only two authentication methods for REST APIs:
  1. Basic Authentication
  2. Using OAuth 1.0
The REST API Authentication plugin allows you to use any third party OAuth 2.0 provider/ OpenID connect to authenticate REST APIs. Here we will go through a guide to configure Azure AD as Provider.

Download And Installation

  • Log into your atlassian instance as admin.
  • Navigate to the settings menu and Click Manage Apps.
  • Click Find new apps or Find new add-ons from the left-hand side of the page.
  • Locate API Token/OAuth Authentication app.
  • Click Try free to begin a new trial or Buy now to purchase a license.
  • Enter your information and click Generate license when redirected to MyAtlassian.
  • Click Apply license.

Step 1: Configure Meetup server:

  • Login to Meetup : Go to Meetup API and login to your account.
  • Click on OAuth Consumers tab.
Rest API OAuth, API token, API Key authentication for Jira and Confluence meetup registration
  • Create application : Click on "Create New Consumer" or "Create one now".
Rest API OAuth, API token, API Key authentication for Jira and Confluence meetup registration1
  • Consumer name : Name of your Meetupapp.
  • Redirect URI : Enter the Application's Base URL.
  • Check "Yes, I agree" checkbox for Platform Terms of Service and click on "Register Consumer".
       NOTE: all the details on the Register OAuth Consumer page are mandatory and need to be filled before clicking on Register Consumer. Rest API OAuth, API token, API Key authentication for Jira and Confluence meetup    
  • Once App is created successfully, you'll see the key and secret of the app.
  • Get Client ID and Client Secret : key is Client ID and secret is client secret.
Rest API OAuth, API token, API Key authentication for Jira and Confluence meetup

Step 2: Fetch Access token through POSTMAN:

  • Open the Postman Application (Here is the link to download Postman Application).
  • Go to Authorization tab.
  • From the dropdown select type as OAuth 2.0 and  click on Get access token.
  • Add the following information from the table below.
  • Postman starts the authentication flow and prompts you to use the access token.
  • Select Add token to the header.
Field Value
Grant type Authorization Code or Client Credentials
Callback URL Enter the Application's base URL if you dont have a callback URL
Auth URL https://secure.meetup.com/oauth2/authorize
Access token URL https://secure.meetup.com/oauth2/access
Client ID Enter the Meetup Client ID
Client secret Enter the Meetup  Client secret
Scope Blank
Client Authentication Send client credentials in body
Rest API OAuth, API token, API Key authentication for Jira and Confluence meetup Accsss Token  
  • Copy the Access Token or click on Use Token.
A sample access token from Meetup Provider looks like this. 
A834c0606ba71336423013699db8e971

Step 3: Fetch Username through Meetup:

  • Choose the method type as "GET".
  • Enter the interoception Endpoint from the plugin to fetch the username in the Request URL. For Meetup it is "https://api.meetup.com/2/member/self/".
  • Go to the Authorization tab select the Bearer Token and enter the access token here.
  • Add the header "content-type: application/json" and click on Send.
  Rest API OAuth, API token, API Key authentication for Jira and Confluence Meetup Username
Request: 
     curl 
     -X GET 
     -H "Authorization: Bearer <Access Token>" 
     -H "Content-type: application/json" 
      https://api.meetup.com/2/member/self/
Copy the attribute value against the username, you will need to configure it in plugin. In this example, the value is "name".  

Step 4: Configure the Rest API plugin:

Step 1: Enable Rest API Authentication:
  • After installing the app, navigate to the Global Settings tab.
  • Here you will have to Enable the Authentication through Enable REST API Authentication and click on Save.
  • Go to the OAuth/OIDC tab and in the dropdown provided select Meetup as the OAuth provider.
  • Enter the attribute value against which we received the username in the Postman response.
  • Save the settings.
Rest API OAuth, API token, API Key authentication for Jira and Confluence Meetup
Step 2: Disable Basic Authentication:
  • Disabling this will restrict all the REST API call made using Basic Authentication.
 

Step 5: Test REST API using access token:

  • Call any REST API. Include the access token in the Authorization header. Here’s an example of fetching content from Confluence.
  • Go to the Postman application select method type as GET and enter the Request URL. For eg. http://{Confluence_Base_URL}/confluence/rest/api/content/
  • In the Authorization tab select type as Bearer Token.
Confluence-Rest-API-Meetup  
  • In the Header tab add the header “content-type: application/json and send the request.
Rest API OAuth, API token, API Key authentication for Jira and Confluence Meetup
Request: 
     curl 
     -X GET  
     -H "Authorization: Bearer <Access Token>" 
     -H "Content-type: application/json" 
     http://{confluence_base_url}/confluence/rest/api/content/
  • This will show the content in Confluence and will return the status 200.
  • If the token is invalid or missing, the call will return a 401 Unauthorized response.


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