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Sample Microservice: URL Shortener

This is a Microservice version of the URL Shortener API.

Demonstrates the enforcement of security policies using Monarch API Manager. It is meant to be a simple corporate version of Bitly, where only authenticated users can shorten URLs. A security standard like OAuth or JWT could be used to pass principal information to the API.

The API has 4 operations:

  • Shorten: Shortens any URL to 6 character token/slug for expansion with an option for specify the value of the slug. Specifying the slug requires the user to be in the marketing department. The security check is applied inside the method because the slug parameter is optional.
  • Assign: An alternative way to shorten a URL using a specific slug value. The security is applied by using the @Authorize annotation with the claims attribute.
  • Expand: Expands the token/slug back to the long URL with an optional flag to increase the visit count by 1.
  • My URLs: Returns the list of shortened URLs for the current user.

Here are the steps to run:

Maven:

mvn clean package
export ENC_PWD="1qK6CHCkyhpzJHJuNhgVFzpc"
java -jar target/url-shortener-ms-1.0.0.jar --server.port=8080 --spring.config.location=file:conf/global-api.yaml,file:conf/url-shortener-api.yaml

Gradle:

./gradlew clean build
export ENC_PWD="1qK6CHCkyhpzJHJuNhgVFzpc"
java -jar build/libs/url-shortener-ms-1.0.0.jar --server.port=8080 --spring.config.location=file:conf/global-api.yaml,file:conf/url-shortener-api.yaml

Now, you will need to create the following in the Monarch admin console:

  • Environment

    • Name = demo
    • System Database = demo
    • Analytics Database = demo

  • Access

    • Provider
      • Name = demo
      • API Key = 6kzFoQJedEz5e3OOzaVeKfQ3
      • Shared Secret = LoXOm37LjJ8jd4SjTuQ7O13c
      • Service Permissions:
        • Authenticate API requests
      • Authenticators:
        • Hawk V1
          • SHA-256
          • Require payload validation checked
    • Principal - Profile = (New) demo - Then (New Principal) - Name = demo - Claims - Type = group - Values = marketing

  • APIs

    • Message
      • Key = urls
      • Display Order = 1
      • Locales:
        • default
          • Format = Plain Text
          • Content = "Create of shortened URLs."
    • Permission
      • Name = urls
      • Description = "Create shortened URLs."
      • Type = Action
      • Scope = Client and User
      • Message = urls
    • Plan
      • Name = Free
      • Price = 0
      • Currency = USD
      • Per Minute = 10
      • Per Hour = 100
      • Per Month = 10000
    • Service
      • Name = urlShortener
      • Note: Access Control settings (URI Prefix, Version, Hostnames, Operations) are not required unless you enable delegated authorization in the serviceContainer bean in api-context.xml.

  • Partners

    • Application
    • Client (Create under new application)
      • Enabled checked
      • Label = demo
      • API Key = Sl2SkvFjP5h5Yc7XrIt7fTVV
      • Shared Secret = vg6mUREf5MfBFOSnH7XsBxsI
      • Application Permissions = urls
      • Authorization schemes:
        • (New) oauth2-password
          • Enabled
          • Expiration = 1:00:00
          • Life Span = Session
          • User Permissions: Manage globally, "urls" permission checked
      • Authenticators:
        • API Key / Bearer Token (Simple)
          • Checked: Require API Key with Token for verification
      • Claims Sources:
        • (New) Internal
          • Profile = demo