En este ejemplo se leen los informes de registros de ArcGIS 10.1 for Server y las estadísticas sobre las imágenes de mapa dibujado por un servicio de mapas determinado. Para hacer una prueba de este ejemplo, haga lo siguiente:
- Establezca el nivel de registro de ArcGIS 10.1 for Server FINO.
- Publique un servicio de mapa nuevo (sin definir un caché de teselas).
- Utilice ArcMap o el Directorio de servicios para realizar un desplazamiento panorámico y haga zoom en el mapa nuevo servicio.
- Ejecute la secuencia de comandos, introduzca credenciales y el nombre del servidor y cuando se le solicite, así como el nombre del servicio de mapas.
Verá un listado que informa la longitud de cada mapa llamar, así como la duración media de dibujo de un mapa.
Observe que los registros se devuelven como JSON, que pueden ser deserializados en Python utilizando json.loads(). A continuación, puede iterar el objeto y leer o informe cualquier elemento que desea.
# Queries the logs to find the average draw time for a given map service # For Http calls import httplib, urllib, json # For system tools import sys # For reading passwords without echoing import getpass #Defines the entry point into the script def main(argv=None): # Print some info print print "This tool is a sample script that queries the ArcGIS 10.1 for Server logs." print # Ask for admin/publisher user name and password username = raw_input("Enter user name: ") password = getpass.getpass("Enter password: ") # Ask for server name serverName = raw_input("Enter Server name: ") serverPort = 6080 # Ask for map service name mapService = raw_input("Enter map service name, using a forward slash / to denote a folder: ") if mapService.endswith(".MapServer"): pass else: mapService += ".MapServer" # Get a token token = getToken(username, password, serverName, serverPort) if token == "": print "Could not generate a token with the username and password provided." return # Construct URL to query the logs logQueryURL = "/arcgis/admin/logs/query" logFilter = "{'services': ['" + mapService + "']}" # Supply the log level, filter, token, and return format params = urllib.urlencode({'level': 'FINE', 'filter': logFilter, 'token': token, 'f': 'json'}) headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/plain"} # Connect to URL and post parameters httpConn = httplib.HTTPConnection(serverName, serverPort) httpConn.request("POST", logQueryURL, params, headers) # Read response response = httpConn.getresponse() if (response.status != 200): httpConn.close() print "Error while querying logs." return else: data = response.read() # Check that data returned is not an error object if not assertJsonSuccess(data): print "Error returned by operation. " + data else: print "Operation completed successfully!" # Deserialize response into Python object dataObj = json.loads(data) httpConn.close() # Need these variables to calculate average draw time for an ExportMapImage call mapDraws = 0 totalDrawTime = 0 # Iterate over messages for item in dataObj["logMessages"]: if item["message"] == "End ExportMapImage": print "Server drew map in " + item["elapsed"] + " seconds." mapDraws +=1 totalDrawTime += float(item["elapsed"]) print "Total number of draws found in logs: " + str(mapDraws) if mapDraws == 0: return print "Average draw time: " + str(1.0*(totalDrawTime / mapDraws)) + " seconds." return #A function to generate a token given username, password and the adminURL. def getToken(username, password, serverName, serverPort): # Token URL is typically http://server[:port]/arcgis/admin/generateToken tokenURL = "/arcgis/admin/generateToken" # URL-encode the token parameters params = urllib.urlencode({'username': username, 'password': password, 'client': 'requestip', 'f': 'json'}) headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/plain"} # Connect to URL and post parameters httpConn = httplib.HTTPConnection(serverName, serverPort) httpConn.request("POST", tokenURL, params, headers) # Read response response = httpConn.getresponse() if (response.status != 200): httpConn.close() print "Error while fetching tokens from admin URL. Please check the URL and try again." return else: data = response.read() httpConn.close() # Check that data returned is not an error object if not assertJsonSuccess(data): return # Extract the toke from it token = json.loads(data) return token['token'] #A function that checks that the input JSON object # is not an error object. def assertJsonSuccess(data): obj = json.loads(data) if 'status' in obj and obj['status'] == "error": print "Error: JSON object returns an error. " + str(obj) return False else: return True # Script start if __name__ == "__main__": sys.exit(main(sys.argv[1:]))