Package com.networknt.aws.lambda.handler.middleware.token

Class TokenMiddleware

java.lang.Object
com.networknt.aws.lambda.handler.middleware.token.TokenMiddleware
All Implemented Interfaces:
LambdaHandler, MiddlewareHandler
public class TokenMiddleware extends Object implements MiddlewareHandler
This middleware is used to get the jwt token for the client credential grant type and put it into the Authorization header when the backend lambda function is invoking another service. The token is cached in the cache manager and it only retrieves a new one before the current one is expired. This is to support the east west security between the services in the light lambda native platform. The middleware will check if service_id header is in the request. Normally, this id should map to an ALB or API Gateway endpoint that is used to call another Lambda function or a service running in a container. When service_url is in the header, it is going to be used to invoke the downstream API, otherwise, the downstream URL will be discovered from the config.

  • Constructor Details

    • TokenMiddleware

      public TokenMiddleware()

    • TokenMiddleware

      @Deprecated public TokenMiddleware(com.networknt.router.middleware.TokenConfig cfg)
      Deprecated.
      This constructor should only be used for testing. Hence, it is marked as deprecated.
      Parameters:
      cfg - config

  • Method Details

    • execute

      public com.networknt.status.Status execute(LightLambdaExchange exchange)
      Specified by:
      execute in interface LambdaHandler

    • getJwtToken

      public static com.networknt.monad.Result<com.networknt.client.oauth.Jwt> getJwtToken(String serviceId)

    • isContinueOnFailure

      public boolean isContinueOnFailure()
      Description copied from interface: MiddlewareHandler
      Indicate if this middleware handler will continue on failure or not.
      Specified by:
      isContinueOnFailure in interface MiddlewareHandler
      Returns:
      boolean true if continue on failure

    • isAudited

      public boolean isAudited()
      Description copied from interface: MiddlewareHandler
      Indicate if this middleware handler is audited or not.
      Specified by:
      isAudited in interface MiddlewareHandler
      Returns:
      boolean true if audited

    • getCachedConfigurations

      public void getCachedConfigurations()
      Specified by:
      getCachedConfigurations in interface MiddlewareHandler

    • isEnabled

      public boolean isEnabled()
      Description copied from interface: LambdaHandler
      Indicate if this handler is enabled or not.
      Specified by:
      isEnabled in interface LambdaHandler
      Returns:
      boolean true if enabled

    • register

      public void register()
      Description copied from interface: LambdaHandler
      Register this handler to the handler registration.
      Specified by:
      register in interface LambdaHandler

    • reload

      public void reload()
      Description copied from interface: LambdaHandler
      Reload config values in case the config values changed by config server.
      Specified by:
      reload in interface LambdaHandler

    • isAsynchronous

      public boolean isAsynchronous()
      Description copied from interface: LambdaHandler
      Indicate if this middleware handler is asynchronous or not.
      Specified by:
      isAsynchronous in interface LambdaHandler
      Returns:
      boolean true if asynchronous