From 74a28aa7125be6a603128ad600c98c4882f3b5c2 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Tue, 1 Jun 2010 12:58:32 +0000
Subject: From new_protocol branch.

---
 server/src/transactionhandler.cc | 287 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 287 insertions(+)
 create mode 100644 server/src/transactionhandler.cc

(limited to 'server/src/transactionhandler.cc')

diff --git a/server/src/transactionhandler.cc b/server/src/transactionhandler.cc
new file mode 100644
index 0000000..c9c58b6
--- /dev/null
+++ b/server/src/transactionhandler.cc
@@ -0,0 +1,287 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            transactionhandler.cc
+ *
+ *  Fri Dec 18 10:00:50 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of Pracro.
+ *
+ *  Pracro is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Pracro 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Pracro; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "transactionhandler.h"
+
+#include "macroparser.h"
+#include "resumeparser.h"
+#include "templateparser.h"
+#include "configuration.h"
+#include "luaquerymapper.h"
+#include "queryhandlerpentominos.h"
+#include "queryhandlerpracro.h"
+#include "xml_encode_decode.h"
+#include "widgetgenerator.h"
+#include "journalwriter.h"
+
+static std::string error_box(std::string message)
+{
+  std::string errorbox =
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+    "<pracro version=\"1.0\">\n"
+    "  <error>" + message + "</error>\n"
+    "</pracro>\n";
+  return errorbox;
+}
+
+static std::string handleCommits(Transaction &transaction, Environment &env,
+                                 Session &session)
+{
+  std::string answer;
+
+  if(transaction.commits.size() > 0) {
+    AutoBorrower<Database*> borrower(env.dbpool);
+    Database *db = borrower.get();
+
+    Commits::iterator i = transaction.commits.begin();
+    while(i != transaction.commits.end()) {
+      Commit &commit = *i;
+      
+      MacroParser mp(env.macrolist.getLatestVersion(commit.macro));
+      mp.parse();
+      Macro *macro = mp.getMacro();
+      
+      std::string resume = resume_parser(macro->resume, commit);
+      commit.fields["journal.resume"] = resume;
+      db->commitTransaction(transaction.user, transaction.cpr, *macro,
+                            commit.fields);
+      
+      if(resume != "") {
+        
+        TemplateParser tp(env.templatelist.getLatestVersion(commit.templ));
+        tp.parse();
+        Template *templ = tp.getTemplate();
+        
+        session.journal()->addEntry(transaction, commit, resume, templ);
+      }
+      
+      i++;
+    }
+  }
+
+  return answer;
+}
+
+static std::string handleRequest(Transaction &transaction, Environment &env,
+                                 Session &session)
+{
+  std::string answer;
+
+  if(transaction.requests.size() > 0) {
+
+    AutoBorrower<Database*> borrower(env.dbpool);
+    Database *db = borrower.get();
+    
+    Requests::iterator i = transaction.requests.begin();
+    while(i != transaction.requests.end()) {
+      Request &request = *i;
+    
+      PRACRO_DEBUG(server, "Handling request - macro: %s, template: %s\n",
+                   request.macro.c_str(), request.templ.c_str());
+    
+      // Read and parse the template file.
+      TemplateParser tp(env.templatelist.getLatestVersion(request.templ));
+      tp.parse();
+    
+      Template *templ = tp.getTemplate();
+    
+      answer += "  <template name=\"";
+      answer += templ->attributes["name"];
+      answer += "\" title=\"";
+      answer += templ->attributes["title"];
+      answer += "\">\n";
+    
+      bool foundmacro = false;
+    
+      // Generate the macro and return it to the client
+      std::vector< Macro >::iterator mi2 = templ->macros.begin();
+      while(mi2 != templ->macros.end()) {
+        Macro &macro = (*mi2);
+
+        if(macro.isHeader) {
+          answer += "    <header caption=\"" + macro.attributes["caption"] +
+            "\"/>\n";
+          mi2++;
+          continue;
+        }
+
+        bool completed = db->checkMacro(transaction.cpr,
+                                        macro.attributes["name"],
+                                        time(NULL)-Conf::db_max_ttl);
+
+        answer += "    <macro uid=\"42\" completed=";
+        if(completed) answer += "\"true\"";
+        else answer += "\"false\"";
+
+        std::map< std::string, std::string >::iterator ai =
+          macro.attributes.begin();
+        while(ai != macro.attributes.end()) {
+          std::string name = ai->first;
+          std::string value = ai->second;
+          answer += " "+name+"=\"" + value + "\"";
+          ai++;
+        }
+
+        if(macro.attributes["name"] == request.macro || 
+           (macro.attributes.find("static") != macro.attributes.end() &&
+            macro.attributes["static"] == "true")
+           ) {
+          foundmacro = true;
+
+          MacroParser mp(env.macrolist.getLatestVersion(macro.attributes["name"]));
+          mp.parse();
+          Macro *m = mp.getMacro();
+          answer += " caption=\"" + m->widgets.attributes["caption"] + "\"";
+          answer += ">\n";
+
+         AutoBorrower<Artefact*> borrower(env.atfpool);
+         Artefact *atf = borrower.get();
+         
+         LUAQueryMapper lqm;
+
+          ////////////////////////
+          std::vector< Query >::iterator qi = m->queries.begin();
+          while(qi != m->queries.end()) {
+
+            Query &query = *qi;
+            std::string service = query.attributes["service"];
+
+            if(service == "pentominos") {
+              // Send the queries to Pentominos (if any)
+              QueryHandlerPentominos qh(*atf, transaction.cpr,
+                                        "pracrod"/*user*/);
+
+              QueryResult queryresult = qh.exec(*qi);
+              lqm.addQueryResult(queryresult);
+            }
+
+            if(service == "pracro") {
+              // Send the queries to Pentominos (if any)
+              QueryHandlerPracro qh(*db, transaction.cpr);
+
+              QueryResult queryresult = qh.exec(*qi);
+              lqm.addQueryResult(queryresult);
+            }
+
+            qi++;
+          }
+
+          // Handle scripts
+          if(m->scripts.size()) {
+            answer += "      <scripts>\n";
+            
+            std::vector< Script >::iterator spi = m->scripts.begin();
+            while(spi != m->scripts.end()) {
+              answer += "        <script language=\"" +
+                spi->attributes["language"] 
+                + "\" name=\"" + spi->attributes["name"] + "\">\n";
+              answer += xml_encode(spi->attributes["code"]);
+              answer += "\n        </script>\n";
+              spi++;
+            }
+            answer += "      </scripts>\n";
+          }
+
+          answer += widgetgenerator(transaction.cpr, *m, lqm, *db);
+        } else {
+          // only find macro title
+          MacroParser mp(env.macrolist.getLatestVersion(macro.attributes["name"]));
+          mp.parse();
+          Macro *m = mp.getMacro();
+          answer += " caption=\"" + m->widgets.attributes["caption"] + "\"";
+          answer += ">\n";
+
+        }
+
+        if(completed) {
+          answer += "      <resume>";
+          answer += xml_encode(db->getResume(transaction.cpr,
+                                             macro,
+                                             time(NULL) - Conf::db_max_ttl));
+          answer += "</resume>\n";
+        }
+
+        answer += "    </macro>\n";
+        mi2++;
+
+      }
+      
+      if(foundmacro == false && request.macro != "")
+        throw NotFoundException(request);
+
+      answer += "  </template>\n";
+
+      i++;
+    }
+  }
+
+  return answer;
+}
+
+std::string handleTransaction(Transaction &transaction, Environment &env,
+                              Session &session)
+{
+  std::string answer;
+
+  answer += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+  answer += "<pracro version=\"1.0\">\n";
+
+  try {
+    answer += handleCommits(transaction, env, session);
+  } catch( std::exception &e ) {
+    PRACRO_ERR(server, "Commit error: %s\n", e.what());
+    return error_box(xml_encode(e.what()));
+  }
+
+  try {
+    answer += handleRequest(transaction, env, session);
+  } catch( std::exception &e ) {
+    PRACRO_ERR(server, "Request error: %s\n", e.what());
+    return error_box(xml_encode(e.what()));
+  }
+
+  answer += "</pracro>\n";
+
+  PRACRO_DEBUG(server, "Done handling transaction\n");
+  PRACRO_DEBUG(serverxml, "%s\n", answer.c_str());
+
+  return answer;
+}
+
+#ifdef TEST_TRANSACTIONHANDLER
+//deps:
+//cflags: -I..
+//libs:
+#include "test.h"
+
+TEST_BEGIN;
+
+#error TODO: Put some testcode here (see test.h for usable macros).
+
+TEST_END;
+
+#endif/*TEST_TRANSACTIONHANDLER*/
-- 
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