started working on storage service.

aqhome/data/storage_writexml.c

@@ -0,0 +1,190 @@
+/****************************************************************************
+ * This file is part of the project Gwenhywfar.
+ * Gwenhywfar (c) by 2023 Martin Preuss, all rights reserved.
+ *
+ * The license for this file can be found in the file COPYING which you
+ * should have received along with this file.
+ ****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "aqhome/data/storage_writexml.h"
+#include "aqhome/data/storage_p.h"
+
+#include <gwenhywfar/debug.h>
+#include <gwenhywfar/xml.h>
+#include <gwenhywfar/directory.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+
+
+/* ------------------------------------------------------------------------------------------------
+ * forward declarations
+ * ------------------------------------------------------------------------------------------------
+ */
+
+
+static void _writeLastIdsToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode);
+static void _writeRoomsToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode);
+static void _writeDevicesToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode);
+static void _writeTopicsToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode);
+static void _writeValuesToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode);
+
+
+
+/* ------------------------------------------------------------------------------------------------
+ * implementations
+ * ------------------------------------------------------------------------------------------------
+ */
+
+int AQH_Storage_WriteStateFile(const AQH_STORAGE *sto, const char *sFilename)
+{
+  GWEN_XMLNODE *rootNode;
+  int rv;
+  GWEN_BUFFER *nbuf;
+
+  rootNode=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, "root");
+  _writeLastIdsToXml(sto, rootNode);
+  _writeRoomsToXml(sto, rootNode);
+  _writeDevicesToXml(sto, rootNode);
+  _writeTopicsToXml(sto, rootNode);
+  _writeValuesToXml(sto, rootNode);
+
+  nbuf=GWEN_Buffer_new(0, 256, 0, 1);
+  GWEN_Buffer_AppendString(nbuf, sFilename);
+  GWEN_Buffer_AppendString(nbuf, ".tmp");
+  unlink(GWEN_Buffer_GetStart(nbuf));
+  rv=GWEN_XMLNode_WriteFile(rootNode,
+			    GWEN_Buffer_GetStart(nbuf),
+			    GWEN_XML_FLAGS_SIMPLE | GWEN_XML_FLAGS_HANDLE_HEADERS | GWEN_XML_FLAGS_INDENT);
+  if (rv<0) {
+    DBG_ERROR(AQH_LOGDOMAIN, "Error writing XML file \"%s\": %d", GWEN_Buffer_GetStart(nbuf), rv);
+    GWEN_Buffer_free(nbuf);
+    GWEN_XMLNode_free(rootNode);
+    return rv;
+  }
+  if (rename(GWEN_Buffer_GetStart(nbuf), sFilename)<0) {
+    DBG_ERROR(AQH_LOGDOMAIN, "Error renaming \"%s\"->\"%s\": %d (%s)",
+	      GWEN_Buffer_GetStart(nbuf), sFilename, errno, strerror(errno));
+    GWEN_Buffer_free(nbuf);
+    GWEN_XMLNode_free(rootNode);
+    return rv;
+  }
+  GWEN_XMLNode_free(rootNode);
+  return 0;
+}
+
+
+
+void _writeLastIdsToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode)
+{
+  GWEN_XMLNODE *nLastIds;
+
+  nLastIds=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_LASTIDS);
+  GWEN_XMLNode_SetIntValue(nLastIds, "lastRoomId", sto->lastRoomId);
+  GWEN_XMLNode_SetIntValue(nLastIds, "lastDeviceId", sto->lastDeviceId);
+  GWEN_XMLNode_SetIntValue(nLastIds, "lastTopicId", sto->lastTopicId);
+  GWEN_XMLNode_SetIntValue(nLastIds, "lastValueId", sto->lastValueId);
+
+  GWEN_XMLNode_AddChild(rootNode, nLastIds);
+}
+
+
+
+void _writeRoomsToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode)
+{
+  GWEN_XMLNODE *nElems;
+  AQH_ROOM *elem;
+
+  nElems=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_ROOMS);
+
+  elem=AQH_Room_List_First(sto->roomList);
+  while(elem) {
+    GWEN_XMLNODE *nElem;
+
+    nElem=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_ROOM);
+    AQH_Room_toXml(elem, nElem);
+    GWEN_XMLNode_AddChild(nElems, nElem);
+    elem=AQH_Room_List_Next(elem);
+  }
+  GWEN_XMLNode_AddChild(rootNode, nElems);
+}
+
+
+
+void _writeDevicesToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode)
+{
+  GWEN_XMLNODE *nElems;
+  AQH_DEVICE *elem;
+
+  nElems=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_DEVICES);
+
+  elem=AQH_Device_List_First(sto->roomList);
+  while(elem) {
+    GWEN_XMLNODE *nElem;
+
+    nElem=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_DEVICE);
+    AQH_Device_toXml(elem, nElem);
+    GWEN_XMLNode_AddChild(nElems, nElem);
+    elem=AQH_Device_List_Next(elem);
+  }
+  GWEN_XMLNode_AddChild(rootNode, nElems);
+}
+
+
+
+void _writeTopicsToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode)
+{
+  GWEN_XMLNODE *nElems;
+  AQH_MQTT_TOPIC *elem;
+
+  nElems=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_TOPICS);
+
+  elem=AQH_MqttTopic_List_First(sto->mqttTopicList);
+  while(elem) {
+    GWEN_XMLNODE *nElem;
+
+    nElem=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_TOPIC);
+    AQH_MqttTopic_toXml(elem, nElem);
+    GWEN_XMLNode_AddChild(nElems, nElem);
+    elem=AQH_MqttTopic_List_Next(elem);
+  }
+  GWEN_XMLNode_AddChild(rootNode, nElems);
+}
+
+
+
+void _writeValuesToXml(const AQH_STORAGE *sto, GWEN_XMLNODE *rootNode)
+{
+  GWEN_XMLNODE *nElems;
+  AQH_VALUE *elem;
+
+  nElems=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_VALUES);
+
+  elem=AQH_Value_List_First(sto->valueList);
+  while(elem) {
+    GWEN_XMLNODE *nElem;
+
+    nElem=GWEN_XMLNode_new(GWEN_XMLNodeTypeTag, AQH_STORAGE_XML_ELEMENTNAME_VALUE);
+    AQH_Value_toXml(elem, nElem);
+    GWEN_XMLNode_AddChild(nElems, nElem);
+    elem=AQH_Value_List_Next(elem);
+  }
+  GWEN_XMLNode_AddChild(rootNode, nElems);
+}
+
+
+
+
+
+
+
+
+
+