Moved transaction handling out of server.cc

1 files changed, 276 insertions, 0 deletions

diff --git a/server/src/transactionhandler.cc b/server/src/transactionhandler.cc
new file mode 100644
index 0000000..fa7a419
--- /dev/null
+++ b/server/src/transactionhandler.cc
@@ -0,0 +1,276 @@
+/* -*- 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"
+
+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, Database &db, 
+                                 JournalWriter &journalwriter, MacroList &macrolist,
+                                 TemplateList &templatelist)
+{
+  std::string answer;
+
+  Commits::iterator i = transaction->commits.begin();
+  while(i != transaction->commits.end()) {
+    Commit &commit = *i;
+    
+    MacroParser mp(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(templatelist.getLatestVersion(commit.templ));
+      tp.parse();
+      Template *templ = tp.getTemplate();
+
+      journalwriter.addEntry(*transaction, commit, resume, templ);
+    }
+    
+    i++;
+  }
+
+  return answer;
+}
+
+
+static std::string handleRequest(Transaction *transaction,
+                                 TCPSocket &pentominos_socket,
+                                 Database &db,
+                                 MacroList &macrolist,
+                                 TemplateList &templatelist)
+{
+  std::string answer;
+
+  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(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(macrolist.getLatestVersion(macro.attributes["name"]));
+        mp.parse();
+        Macro *m = mp.getMacro();
+        answer += " caption=\"" + m->widgets.attributes["caption"] + "\"";
+        answer += ">\n";
+
+        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(pentominos_socket, transaction->cpr);
+
+            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(macrolist.getLatestVersion(macro.attributes["name"]));
+        mp.parse();
+        Macro *m = mp.getMacro();
+        answer += " caption=\"" + m->widgets.attributes["caption"] + "\"";
+        answer += ">\n";
+
+      }
+
+      if(completed) {
+        answer += "      <resume>";
+        answer += 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,
+                              TCPSocket &pentominos_socket,
+                              Database &db,
+                              JournalWriter &journalwriter,
+                              MacroList &macrolist,
+                              TemplateList &templatelist)
+{
+  std::string answer;
+  answer += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+  answer += "<pracro version=\"1.0\">\n";
+
+  try {
+    answer += handleCommits(transaction, db,
+                            journalwriter, macrolist, templatelist);
+  } catch( std::exception &e ) {
+    PRACRO_ERR(server, "Commit error: %s\n", e.what());
+    return error_box(xml_encode(e.what()));
+  }
+
+  try {
+    answer += handleRequest(transaction, pentominos_socket, db, macrolist, templatelist);
+  } 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
+//Additional dependency files
+//deps:
+//Required cflags (autoconf vars may be used)
+//cflags:
+//Required link options (autoconf vars may be used)
+//libs:
+#include "test.h"
+
+TEST_BEGIN;
+
+// TODO: Put some testcode here (see test.h for usable macros).
+
+TEST_END;
+
+#endif/*TEST_TRANSACTIONHANDLER*/