Class InterceptorAdapter

java.lang.Object
ca.uhn.fhir.rest.server.interceptor.InterceptorAdapter
All Implemented Interfaces:
IServerInterceptor
Direct Known Subclasses:
BanUnsupportedHttpMethodsInterceptor, CorsInterceptor, ServerOperationInterceptorAdapter, VerboseLoggingInterceptor

public class InterceptorAdapter extends Object implements IServerInterceptor
Base class for IServerInterceptor implementations. Provides a No-op implementation of all methods, always returning true
  • Constructor Details

  • Method Details

    • handleException

      public boolean handleException(RequestDetails theRequestDetails, ca.uhn.fhir.rest.server.exceptions.BaseServerResponseException theException, javax.servlet.http.HttpServletRequest theServletRequest, javax.servlet.http.HttpServletResponse theServletResponse) throws javax.servlet.ServletException, IOException
      Description copied from interface: IServerInterceptor
      This method is called upon any exception being thrown within the server's request processing code. This includes any exceptions thrown within resource provider methods (e.g. Search and Read methods) as well as any runtime exceptions thrown by the server itself. This also includes any AuthenticationExceptions thrown.

      Implementations of this method may choose to ignore/log/count/etc exceptions, and return true. In this case, processing will continue, and the server will automatically generate an OperationOutcome. Implementations may also choose to provide their own response to the client. In this case, they should return false, to indicate that they have handled the request and processing should stop.

      Specified by:
      handleException in interface IServerInterceptor
      Parameters:
      theRequestDetails - A bean containing details about the request that is about to be processed, including details such as the resource type and logical ID (if any) and other FHIR-specific aspects of the request which have been pulled out of the servlet request. Note that the bean properties are not all guaranteed to be populated, depending on how early during processing the exception occurred.
      theServletRequest - The incoming request
      theServletResponse - The response. Note that interceptors may choose to provide a response (i.e. by calling ServletResponse.getWriter()) but in that case it is important to return false to indicate that the server itself should not also provide a response.
      Returns:
      Return true if processing should continue normally. This is generally the right thing to do. If your interceptor is providing a response rather than letting HAPI handle the response normally, you must return false. In this case, no further processing will occur and no further interceptors will be called.
      Throws:
      javax.servlet.ServletException - If this exception is thrown, it will be re-thrown up to the container for handling.
      IOException - If this exception is thrown, it will be re-thrown up to the container for handling.
    • incomingRequestPostProcessed

      public boolean incomingRequestPostProcessed(RequestDetails theRequestDetails, javax.servlet.http.HttpServletRequest theRequest, javax.servlet.http.HttpServletResponse theResponse) throws ca.uhn.fhir.rest.server.exceptions.AuthenticationException
      Description copied from interface: IServerInterceptor
      This method is called just before the actual implementing server method is invoked.
      Specified by:
      incomingRequestPostProcessed in interface IServerInterceptor
      Parameters:
      theRequestDetails - A bean containing details about the request that is about to be processed, including details such as the resource type and logical ID (if any) and other FHIR-specific aspects of the request which have been pulled out of the servlet request.
      theRequest - The incoming request
      theResponse - The response. Note that interceptors may choose to provide a response (i.e. by calling ServletResponse.getWriter()) but in that case it is important to return false to indicate that the server itself should not also provide a response.
      Returns:
      Return true if processing should continue normally. This is generally the right thing to do. If your interceptor is providing a response rather than letting HAPI handle the response normally, you must return false. In this case, no further processing will occur and no further interceptors will be called.
      Throws:
      ca.uhn.fhir.rest.server.exceptions.AuthenticationException - This exception may be thrown to indicate that the interceptor has detected an unauthorized access attempt. If thrown, processing will stop and an HTTP 401 will be returned to the client.
    • incomingRequestPreHandled

      public void incomingRequestPreHandled(ca.uhn.fhir.rest.api.RestOperationTypeEnum theOperation, RequestDetails theProcessedRequest)
      Description copied from interface: IServerInterceptor
      Invoked before an incoming request is processed. Note that this method is called after the server has begin preparing the response to the incoming client request. As such, it is not able to supply a response to the incoming request in the way that IServerInterceptor.incomingRequestPostProcessed(RequestDetails, HttpServletRequest, HttpServletResponse) are.

      This method may however throw a subclass of BaseServerResponseException, and processing will be aborted with an appropriate error returned to the client.

      Specified by:
      incomingRequestPreHandled in interface IServerInterceptor
      Parameters:
      theOperation - The type of operation that the FHIR server has determined that the client is trying to invoke
      theProcessedRequest - An object which will be populated with the details which were extracted from the raw request by the server, e.g. the FHIR operation type and the parsed resource body (if any).
    • incomingRequestPreProcessed

      public boolean incomingRequestPreProcessed(javax.servlet.http.HttpServletRequest theRequest, javax.servlet.http.HttpServletResponse theResponse)
      Description copied from interface: IServerInterceptor
      This method is called before any other processing takes place for each incoming request. It may be used to provide alternate handling for some requests, or to screen requests before they are handled, etc.

      Note that any exceptions thrown by this method will not be trapped by HAPI (they will be passed up to the server)

      Specified by:
      incomingRequestPreProcessed in interface IServerInterceptor
      Parameters:
      theRequest - The incoming request
      theResponse - The response. Note that interceptors may choose to provide a response (i.e. by calling ServletResponse.getWriter()) but in that case it is important to return false to indicate that the server itself should not also provide a response.
      Returns:
      Return true if processing should continue normally. This is generally the right thing to do. If your interceptor is providing a response rather than letting HAPI handle the response normally, you must return false. In this case, no further processing will occur and no further interceptors will be called.
    • outgoingResponse

      public boolean outgoingResponse(RequestDetails theRequestDetails)
      Description copied from interface: IServerInterceptor
      Specified by:
      outgoingResponse in interface IServerInterceptor
    • outgoingResponse

      public boolean outgoingResponse(RequestDetails theRequestDetails, javax.servlet.http.HttpServletRequest theServletRequest, javax.servlet.http.HttpServletResponse theServletResponse) throws ca.uhn.fhir.rest.server.exceptions.AuthenticationException
      Description copied from interface: IServerInterceptor
      Specified by:
      outgoingResponse in interface IServerInterceptor
      Throws:
      ca.uhn.fhir.rest.server.exceptions.AuthenticationException
    • outgoingResponse

      public boolean outgoingResponse(RequestDetails theRequestDetails, org.hl7.fhir.instance.model.api.IBaseResource theResponseObject)
      Description copied from interface: IServerInterceptor
      Specified by:
      outgoingResponse in interface IServerInterceptor
    • outgoingResponse

      public boolean outgoingResponse(RequestDetails theRequestDetails, org.hl7.fhir.instance.model.api.IBaseResource theResponseObject, javax.servlet.http.HttpServletRequest theServletRequest, javax.servlet.http.HttpServletResponse theServletResponse) throws ca.uhn.fhir.rest.server.exceptions.AuthenticationException
      Description copied from interface: IServerInterceptor
      This method is called after the server implementation method has been called, but before any attempt to stream the response back to the client.
      Specified by:
      outgoingResponse in interface IServerInterceptor
      Parameters:
      theRequestDetails - A bean containing details about the request that is about to be processed, including details such as the resource type and logical ID (if any) and other FHIR-specific aspects of the request which have been pulled out of the servlet request.
      theResponseObject - The actual object which is being streamed to the client as a response. This may be null if the response does not include a resource.
      theServletRequest - The incoming request
      theServletResponse - The response. Note that interceptors may choose to provide a response (i.e. by calling ServletResponse.getWriter()) but in that case it is important to return false to indicate that the server itself should not also provide a response.
      Returns:
      Return true if processing should continue normally. This is generally the right thing to do. If your interceptor is providing a response rather than letting HAPI handle the response normally, you must return false. In this case, no further processing will occur and no further interceptors will be called.
      Throws:
      ca.uhn.fhir.rest.server.exceptions.AuthenticationException - This exception may be thrown to indicate that the interceptor has detected an unauthorized access attempt. If thrown, processing will stop and an HTTP 401 will be returned to the client.
    • outgoingResponse

      public boolean outgoingResponse(RequestDetails theRequestDetails, ResponseDetails theResponseDetails, javax.servlet.http.HttpServletRequest theServletRequest, javax.servlet.http.HttpServletResponse theServletResponse) throws ca.uhn.fhir.rest.server.exceptions.AuthenticationException
      Description copied from interface: IServerInterceptor
      This method is called after the server implementation method has been called, but before any attempt to stream the response back to the client.
      Specified by:
      outgoingResponse in interface IServerInterceptor
      Parameters:
      theRequestDetails - A bean containing details about the request that is about to be processed, including details such as the resource type and logical ID (if any) and other FHIR-specific aspects of the request which have been pulled out of the servlet request.
      theResponseDetails - This object contains details about the response, including the actual payload that will be returned
      theServletRequest - The incoming request
      theServletResponse - The response. Note that interceptors may choose to provide a response (i.e. by calling ServletResponse.getWriter()) but in that case it is important to return false to indicate that the server itself should not also provide a response.
      Returns:
      Return true if processing should continue normally. This is generally the right thing to do. If your interceptor is providing a response rather than letting HAPI handle the response normally, you must return false. In this case, no further processing will occur and no further interceptors will be called.
      Throws:
      ca.uhn.fhir.rest.server.exceptions.AuthenticationException - This exception may be thrown to indicate that the interceptor has detected an unauthorized access attempt. If thrown, processing will stop and an HTTP 401 will be returned to the client.
    • outgoingResponse

      public boolean outgoingResponse(RequestDetails theRequestDetails, ca.uhn.fhir.model.api.TagList theResponseObject)
      Description copied from interface: IServerInterceptor
      Specified by:
      outgoingResponse in interface IServerInterceptor
    • outgoingResponse

      public boolean outgoingResponse(RequestDetails theRequestDetails, ca.uhn.fhir.model.api.TagList theResponseObject, javax.servlet.http.HttpServletRequest theServletRequest, javax.servlet.http.HttpServletResponse theServletResponse) throws ca.uhn.fhir.rest.server.exceptions.AuthenticationException
      Description copied from interface: IServerInterceptor
      Specified by:
      outgoingResponse in interface IServerInterceptor
      Throws:
      ca.uhn.fhir.rest.server.exceptions.AuthenticationException
    • preProcessOutgoingException

      public ca.uhn.fhir.rest.server.exceptions.BaseServerResponseException preProcessOutgoingException(RequestDetails theRequestDetails, Throwable theException, javax.servlet.http.HttpServletRequest theServletRequest) throws javax.servlet.ServletException
      Description copied from interface: IServerInterceptor
      This method is called upon any exception being thrown within the server's request processing code. This includes any exceptions thrown within resource provider methods (e.g. Search and Read methods) as well as any runtime exceptions thrown by the server itself. This method is invoked for each interceptor (until one of them returns a non-null response or the end of the list is reached), after which IServerInterceptor.handleException(RequestDetails, BaseServerResponseException, HttpServletRequest, HttpServletResponse) is called for each interceptor.

      This may be used to add an OperationOutcome to a response, or to convert between exception types for any reason.

      Implementations of this method may choose to ignore/log/count/etc exceptions, and return null. In this case, processing will continue, and the server will automatically generate an OperationOutcome. Implementations may also choose to provide their own response to the client. In this case, they should return a non-null, to indicate that they have handled the request and processing should stop.

      Specified by:
      preProcessOutgoingException in interface IServerInterceptor
      Returns:
      Returns the new exception to use for processing, or null if this interceptor is not trying to modify the exception. For example, if this interceptor has nothing to do with exception processing, it should always return null. If this interceptor adds an OperationOutcome to the exception, it should return an exception.
      Throws:
      javax.servlet.ServletException
    • processingCompletedNormally

      public void processingCompletedNormally(ServletRequestDetails theRequestDetails)
      Description copied from interface: IServerInterceptor
      This method is called after all processing is completed for a request, but only if the request completes normally (i.e. no exception is thrown).

      This method should not throw any exceptions. Any exception that is thrown by this method will be logged, but otherwise not acted upon.

      Note that this individual interceptors will have this method called in the reverse order from the order in which the interceptors were registered with the server.

      Specified by:
      processingCompletedNormally in interface IServerInterceptor
      Parameters:
      theRequestDetails - The request itself