IERestService.java

/*
** Module   : IERestService.java
** Abstract : Implementation of a REST service invocation via an internal entry (procedure or 
**            function).
**
** Copyright (c) 2019-2022, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------------Description----------------------------------------
** 001 CA  20190614 First version.
** 002 CA  20190628 Proper SINGLETON and SINGLE-RUN implementation; misc improvements. 
** 003 CA  20200514 Refactoring to allow common code for SOAP services support.
** 004 CA  20210226 Pass the argument modes to the invocation, as the Agent will not pre-process the args 
**                  otherwise.
** 005 CA  20220405 Added authentication and authorization for web requests.  When this is enabled, the target
**                  API call will be executed under the authenticated FWD context, and not the agent's context.
*/

/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
** 
** Additional terms under GNU Affero GPL version 3 section 7:
** 
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
**   are non-permissive additional terms allowed under Section 7 of the GNU
**   Affero GPL version 3 and may not be removed by you.
** 
**   0. Attribution Requirement.
** 
**     You must preserve all legal notices or author attributions in the covered
**     work or Appropriate Legal Notices displayed by works containing the covered
**     work.  You may not remove from the covered work any author or developer
**     credit already included within the covered work.
** 
**   1. No License To Use Trademarks.
** 
**     This license does not grant any license or rights to use the trademarks
**     Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
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**     name Golden Code, FWD, or the names of any author or contributor, for
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*/

package com.goldencode.p2j.rest;

import com.goldencode.p2j.util.*;

/**
 * Implementation to invoke REST services mapped to an internal entry (procedure, function). 
 */
class IERestService
extends IELegacyService
{
   /**
    * Initialize with the details for an internal entry invocation.
    * 
    * @param    ls
    *           The annotation at the Java class (defining the resource).
    * @param    pname
    *           The external program name.
    * @param    iels
    *           The annotation at the Java method (defining the operation).
    * @param    ie
    *           The target {@link InternalEntry} for this service.
    * @param    function
    *           Flag identifying if we are invoking a function.
    * @param    key
    *           The service key.
    * @param    timeout
    *           The invocation timeout.
    */
   public IERestService(LegacyService ls,
                        String        pname, 
                        LegacyService iels, 
                        InternalEntry ie, 
                        boolean       function,
                        ServiceKey    key,
                        int           timeout)
   {
      super(ls, pname, iels, ie, function, key, timeout);
   }

   /**
    * Invoke this service.
    * 
    * @param    helper
    *           The appserver helper used to execute the requests.
    * @param    token
    *           When not null, it represents the token of a FWD context created for an authenticated and 
    *           authorized web service call.  The API call will be performed in that context.
    * @param    args
    *           The arguments.
    *           
    * @return   The returned value.
    */
   @Override
   public Object invoke(AppServerHelper helper, String token, Object[] args)
   {
      String modes = resolveModes();
      String executionMode = getExecutionMode();
      
      boolean singleton = executionMode.equalsIgnoreCase(LegacyWebServiceHandler.SINGLETON);
      boolean singleRun = executionMode.equalsIgnoreCase(LegacyWebServiceHandler.SINGLE_RUN);

      InvokeConfig cfg = new InvokeConfig(new character(iename));
      cfg.setModes(modes)
         .setArguments(args)
         .setRequestId(nextRequestId())
         .setSingleton(singleton)
         .setSingleRun(singleRun)
         .setFunction(function)
         .setInHandle(new handle(new DeferredProgramWrapper(new DeferredProgram(pname))))
         .setWebServiceToken(token);

      return helper.invoke(timeout, null, cfg);
   }
}