Finalizado la primera version del wrapper de Mysql. Empezado a trabajar en el cuerpo del explorer

__init__.py

@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+

core/__init__.py

@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+

core/mysql_wrapper.py

@@ -1,32 +1,29 @@
 # -*- coding: utf-8 -*-
-
-
-# =============================================================================
-# Contiene las clases necesarias para conectar con la Base de Datos mysql.
-# 
-# =============================================================================
-
 import mysql.connector
 
+anuncios_db_parameters = {'host': '46.183.115.154',
+                    'database': 'anuncios',
+                    'user': 'pablo',
+                    'password': 'noesfacilvivirsinpin'}
 
-class DatabaseInstance():
-    
+class DatabaseWrapper():
     
     def __init__(self, connection_parameters):
         self.host = connection_parameters['host']
         self.database = connection_parameters['database']
         self.user = connection_parameters['user']
         self.password = connection_parameters['password']
-        
         self.connection = None
         
+        self.ping()
+        
     def connect(self):
         try:
             self.connection = mysql.connector.connect(host = self.host,
                                                       database = self.database,
                                                       user = self.user,
                                                       password = self.password)
-        except Error as e:
+        except Exception as e:
             print("Could not connect to the database.")
             print(e)
             
@@ -40,9 +37,20 @@ class DatabaseInstance():
         self.connect()
         self.disconnect()
         
-    def query(self, query, parameters):
+    def query(self, query_statement, query_parameters = None, dictionary = False):
         self.connect()
         if self.connection.is_connected():
-            cursor = self.connection.cursor()
-            cursor.execute()
-            #SEGUIR AQUIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
+            execution_cursor = self.connection.cursor(dictionary = dictionary)
+            execution_cursor.execute(query_statement, query_parameters)
+            self.disconnect()
+            return execution_cursor
+        
+        
+    def query_dict(self, query_statement, query_parameters = None):
+        return self.query(query_statement, query_parameters, dictionary = True)
+
+def get_anunciosdb():
+    return DatabaseWrapper(anuncios_db_parameters)        
+
+
+            

explorer/explorer.py

@@ -0,0 +1,98 @@
+# -*- coding: utf-8 -*-
+import sys
+sys.path.append('..')
+from time import sleep
+
+from core.mysql_wrapper import get_anunciosdb
+
+class Explorer():
+    
+    sleep_time_no_work = 60
+    sleep_time_no_service = 600
+    
+    
+    def __init__(self):
+        try:
+            self.anunciosdb = get_anunciosdb()
+        except:
+            print("Could not connect to DB")
+        
+        self.max_db_retries = 3
+        self.db_retries = 0
+        self.max_queue_retries = 3
+        self.queue_retries = 0
+        
+        
+            
+        
+    def start(self):
+        #Arrancar el servicio
+        
+        while True:
+            if not self.there_is_work():
+                sleep(sleep_time_no_work)
+                continue
+            
+            if not self.database_is_up():
+                break
+        
+            if not self.queue_is_up():
+                break
+            
+            self.compose_listing_url
+
+
+        
+        self.stop()        
+                
+        
+    def stop(self):
+        #Detener el servicio
+        
+    def there_is_work(self):
+        #Comprueba si hay trabajo por hacer
+        
+    def database_is_up(self):
+        while self.db_retries <= self.max_db_retries:
+            try:
+                self.anunciosdb.ping()
+                self.db_retries = 0
+                return True
+            except:
+                sleep(sleep_time_no_service)
+                self.db_retries = self.db_retries + 1
+                
+        return False        
+        
+    
+    def queue_is_up(self):
+        #WIP
+        while self.queue_retries <= self.max_queue_retries:
+            try:
+                #codigo que testea si redis esta vivo
+                self.queue_retries = 0
+                return True
+            except:
+                sleep(sleep_time_no_service)
+                self.queue_retries = self.queue_retries + 1
+                
+        return False  
+    
+    def compose_listing_url(self):
+        #Decide que url hay que componer y la compone
+
+    raiz, orden = componer_raiz(p_orden, tipo_anuncios, ciudad)
+    cantidad = calcular_cantidad_listado(anuncios_por_capturar)
+    
+    lista_urls = []
+    
+    for num in range(primera_pagina, cantidad + primera_pagina):
+        lista_urls.append(raiz + 'pagina-' + str(num) + '.htm' + orde$
+
+    
+    return lista_urls    
+    
+    #funcion que compone los strings de url de idealista
+    #tiene en cuenta cuantos anuncios quedan por capturar
+    #para decidir la cantidad de URLs a generar
+