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How to Download JBoss from the Red Hat Portal Using API

Downloading JBoss from the Red Hat Customer Portal via API involves a process that combines authentication, API interaction, and file retrieval. While there is no direct API endpoint specifically for downloading JBoss software, you can use the Red Hat APIs to manage subscriptions, access product information, and potentially retrieve download links. Here is a comprehensive guide to achieve this:

1. Prerequisites

Before you begin, ensure you have the following:

  • Active Red Hat Subscription: An active subscription is necessary to access the Customer Portal and APIs.
  • Service Account Credentials: A Red Hat service account with appropriate permissions, including "View/Renew Subscription Information."
  • Offline Token: Generate an offline token from the Red Hat Customer Portal. This token will be used for API authentication.
  • Required Tools:
    • curl or a similar HTTP client for making API calls.
    • jq for processing JSON responses (install using sudo yum install jq on RHEL-based systems).
    • Optionally, Python or other scripting languages with HTTP libraries like requests.

2. Authentication and Token Generation

Red Hat APIs use OAuth 2.0 for authorization. You need to generate an access token using your offline token.

2.1 Generate an Offline Token

  1. Log in to the Red Hat Customer Portal.
  2. Navigate to the API Tokens page under your account settings.
  3. Generate an offline token with the required permissions (e.g., "View/Renew Subscription Information").
  4. Save the token securely.

2.2 Generate an Access Token

  • Token URL: https://sso.redhat.com/auth/realms/redhat-external/protocol/openid-connect/token
  • HTTP Method: POST
  • Request Headers:
    • Content-Type: application/x-www-form-urlencoded
  • Request Body: 
    grant_type=refresh_token
client_id=rhsm-api
refresh_token=<your_offline_token>

Example Command:

curl -X POST \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -d "grant_type=refresh_token" \
  -d "client_id=rhsm-api" \
  -d "refresh_token=<your_offline_token>" \
  https://sso.redhat.com/auth/realms/redhat-external/protocol/openid-connect/token

Example Response:

{
  "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
  "expires_in": 1800,
  "refresh_expires_in": 2592000,
  "token_type": "Bearer",
  "not-before-policy": 0,
  "scope": "openid"
}

Save the access_token from the response for subsequent API calls.

3. Accessing Available Red Hat APIs

Use the access token to list available APIs and gather information about your subscriptions and products.

3.1 List Available APIs

  • API Endpoint: https://api.access.redhat.com/management/v1/apis
  • HTTP Method: GET
  • Request Headers:
    • Authorization: Bearer <access_token>

Example Command:

curl -X GET \
  https://api.access.redhat.com/management/v1/apis \
  -H "Authorization: Bearer <access_token>"

3.2 Check Subscription and Entitlements

  • API Endpoint: https://api.access.redhat.com/management/v1/subscriptions
  • HTTP Method: GET
  • Request Headers:
    • Authorization: Bearer <access_token>

Example Command:

curl -X GET \
  https://api.access.redhat.com/management/v1/subscriptions \
  -H "Authorization: Bearer <access_token>"

3.3 Access Product Information

  • API Endpoint: https://api.access.redhat.com/management/v1/products
  • HTTP Method: GET
  • Request Headers:
    • Authorization: Bearer <access_token>

Example Command:

curl -X GET \
  https://api.access.redhat.com/management/v1/products \
  -H "Authorization: Bearer <access_token>"

4. Identify the JBoss Download URL

While there is no direct API to download JBoss, you can use the product information endpoints to potentially find download links. The exact URL for the JBoss version you want to download is typically available in the Red Hat Customer Portal under the product downloads section.

Alternatively, you can use the Red Hat API to list available downloads, although specific endpoints for JBoss downloads are not explicitly documented.

Example Request (if available):

curl -X GET \
  -H "Authorization: Bearer <access_token>" \
  https://access.redhat.com/api/downloads/<jboss_product_id>

Example Response (if available):

{
  "downloads": [
    {
      "id": "jboss-eap-7.4.0",
      "name": "JBoss EAP 7.4.0",
      "download_url": "https://access.redhat.com/downloads/content/jboss-eap-7.4.0.zip"
    }
  ]
}

Note the download_url for the desired JBoss version.

5. Download JBoss

Once you have the download URL, you can use curl to download the file. Ensure that the Authorization header includes your access token.

Example Command:

curl -L \
  -H "Authorization: Bearer <access_token>" \
  -o jboss-eap-7.4.0.zip \
  "https://access.redhat.com/downloads/content/jboss-eap-7.4.0.zip"

This command uses the -L flag to follow redirects and saves the downloaded file as jboss-eap-7.4.0.zip.

6. Automate the Process

To automate the process, you can create a script (e.g., in Bash or Python) that:

  1. Exchanges the offline token for an access token.
  2. Queries the API for the desired JBoss version.
  3. Downloads the file programmatically.

Example Bash Script:

#!/bin/bash

# Variables
OFFLINE_TOKEN="<your_offline_token>"
TOKEN_URL="https://sso.redhat.com/auth/realms/redhat-external/protocol/openid-connect/token"
DOWNLOAD_URL="https://access.redhat.com/downloads/content/jboss-eap-7.4.0.zip"
OUTPUT_FILE="jboss-eap-7.4.0.zip"

# Get Access Token
ACCESS_TOKEN=$(curl -s -X POST \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -d "grant_type=refresh_token" \
  -d "client_id=rhsm-api" \
  -d "refresh_token=$OFFLINE_TOKEN" \
  $TOKEN_URL | jq -r '.access_token')

# Download JBoss
curl -L \
  -H "Authorization: Bearer $ACCESS_TOKEN" \
  -o $OUTPUT_FILE \
  $DOWNLOAD_URL

echo "Download complete: $OUTPUT_FILE"

7. Verify the Download

After downloading, verify the integrity of the file using checksums provided on the Red Hat Customer Portal.

8. Using Swagger Documentation

Red Hat provides Swagger documentation for their APIs, which can be found on the Red Hat API Tokens and Swagger documentation page. This documentation can be imported into REST clients like Postman or RESTlet to automatically build a library of API calls.

9. Tools and Libraries

  • REST Client: Use a REST client that supports OAuth 2.0 or custom form submission. Popular options include Postman, Advanced REST Client, and Restlet.
  • Command-line JSON Processor (jq): Install jq to process JSON objects, which can be helpful for parsing API responses.

10. Troubleshooting and Support

  • Open a Support Case: If you encounter issues, you can open a support case through the Red Hat Customer Portal.

Conclusion

While direct downloading of JBoss via a dedicated API endpoint is not explicitly supported, you can use the Red Hat APIs to manage your subscriptions, access product information, and potentially retrieve download links. Always refer to the official Red Hat documentation for the most current and detailed information. For further details, you can visit Getting started with Red Hat APIs - Red Hat Customer Portal.


December 23, 2024
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