// Shows how to create and delete OPC UA files, using the file transfer client.
// Note: Consider using a higher-level abstraction, OPC UA file provider, instead.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
using System;
using OpcLabs.EasyOpc.UA;
using OpcLabs.EasyOpc.UA.AddressSpace;
using OpcLabs.EasyOpc.UA.Extensions;
using OpcLabs.EasyOpc.UA.FileTransfer;
using OpcLabs.EasyOpc.UA.OperationModel;
namespace UADocExamples.FileTransfer._EasyUAFileTransferClient
{
class CreateFileAndDelete
{
public static void Main1()
{
// Unified Automation .NET based demo server (UaNETServer/UaServerNET.exe)
var endpointDescriptor = new UAEndpointDescriptor("opc.tcp://localhost:48030")
.WithUserNameIdentity("john", "master");
// An object that aggregates an OPC UA file system.
UANodeDescriptor objectDescriptor = "nsu=http://www.unifiedautomation.com/DemoServer/ ;s=Demo.Files";
// Create a random number generator - will be used for file/directory names.
var random = new Random();
// Instantiate the file transfer client object
var fileTransferClient = new EasyUAFileTransferClient();
// Create two files, and delete the first one.
try
{
// The file system node is a root directory of the file system.
Console.WriteLine("Getting file system...");
UANodeDescriptor fileSystemNodeDescriptor = fileTransferClient.GetFileSystem(endpointDescriptor, objectDescriptor);
string fileName1 = "MyFile1-" + random.Next();
Console.WriteLine($"Creating first file, '{fileName1}'...");
UANodeId fileNodeId1 = fileTransferClient.CreateFile(endpointDescriptor, fileSystemNodeDescriptor, fileName1);
Console.WriteLine($"Node Id of the first file: {fileNodeId1}");
string fileName2 = "MyFile2-" + random.Next();
Console.WriteLine($"Creating second file, '{fileName2}'...");
UANodeId fileNodeId2 = fileTransferClient.CreateFile(endpointDescriptor, fileSystemNodeDescriptor, fileName2);
Console.WriteLine($"Node Id of the second file: {fileNodeId2}");
Console.WriteLine("Deleting the first file...");
fileTransferClient.DeleteFile(endpointDescriptor, fileSystemNodeDescriptor, fileName1);
}
catch (UAException uaException)
{
Console.WriteLine("*** Failure: {0}", uaException.GetBaseException().Message);
return;
}
Console.WriteLine("Finished...");
}
}
}
# Shows how to create and delete OPC UA files, using the file transfer client.
# Note: Consider using a higher-level abstraction, OPC UA file provider, instead.
#
# Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
# OPC client and subscriber examples in Python on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-Python .
# The QuickOPC package is needed. Install it using "pip install opclabs_quickopc".
import opclabs_quickopc
import random
# Import .NET namespaces.
from OpcLabs.EasyOpc.UA import *
from OpcLabs.EasyOpc.UA.Extensions import *
from OpcLabs.EasyOpc.UA.FileTransfer import *
from OpcLabs.EasyOpc.UA.OperationModel import *
# Unified Automation .NET based demo server (UaNETServer/UaServerNET.exe).
endpointDescriptor = UAEndpointDescriptor('opc.tcp://localhost:48030')
endpointDescriptor = UAEndpointDescriptorExtension.WithUserNameIdentity(endpointDescriptor,'john', 'master')
# An object that aggregates an OPC UA file system.
objectDescriptor = UANodeDescriptor('nsu=http://www.unifiedautomation.com/DemoServer/ ;s=Demo.Files')
# Create a random number generator - will be used for file/directory names.
random = random.Random()
# Instantiate the file transfer client object.
fileTransferClient = EasyUAFileTransferClient()
# Prevent prompt to trust the server certificate (INSECURE, used just for smooth example flow).
EasyUAClient.SharedParameters.EngineParameters.CertificateAcceptancePolicy.TrustEndpointUrlString(
endpointDescriptor.UrlString)
# Create two files, and delete the first one.
try:
# The file system node is a root directory of the file system.
print('Getting file system...')
fileSystemNodeDescriptor = IEasyUAFileTransferExtension.GetFileSystem(fileTransferClient,
endpointDescriptor, objectDescriptor)
fileName1 = 'MyFile1-' + str(random.randint(0, 999_999_999))
print("Creating first file, '", fileName1, "'...", sep='')
fileNodeId1 = IEasyUAFileTransferExtension.CreateFile(fileTransferClient,
endpointDescriptor, fileSystemNodeDescriptor, fileName1)
print('Node Id of the first file: ', fileNodeId1, sep='')
fileName2 = 'MyFile2-' + str(random.randint(0, 999_999_999))
print("Creating second file, '", fileName2, "'...", sep='')
fileNodeId2 = IEasyUAFileTransferExtension.CreateFile(fileTransferClient,
endpointDescriptor, fileSystemNodeDescriptor, fileName2)
print('Node Id of the second file: ', fileNodeId2, sep='')
print('Deleting the first file...')
IEasyUAFileTransferExtension.DeleteFile(fileTransferClient,
endpointDescriptor, fileSystemNodeDescriptor, fileName1)
except UAException as uaException:
print('*** Failure: ' + uaException.GetBaseException().Message)
exit()
print()
print('Finished.')
' Shows how to create and delete OPC UA files, using the file transfer client.
' Note: Consider using a higher-level abstraction, OPC UA file provider, instead.
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
Imports OpcLabs.EasyOpc.UA
Imports OpcLabs.EasyOpc.UA.AddressSpace
Imports OpcLabs.EasyOpc.UA.Extensions
Imports OpcLabs.EasyOpc.UA.FileTransfer
Imports OpcLabs.EasyOpc.UA.OperationModel
Namespace FileTransfer._EasyUAFileTransferClient
Friend Class CreateFileAndDelete
Public Shared Sub Main1()
' Unified Automation .NET based demo server (UaNETServer/UaServerNET.exe)
Dim endpointDescriptor As UAEndpointDescriptor =
New UAEndpointDescriptor("opc.tcp://localhost:48030") _
.WithUserNameIdentity("john", "master")
' An object that aggregates an OPC UA file system.
Dim objectDescriptor As UANodeDescriptor = "nsu=http://www.unifiedautomation.com/DemoServer/ ;s=Demo.Files"
' Create a random number generator - will be used for file/directory names.
Dim random = New Random
' Instantiate the file transfer client object
Dim fileTransferClient = New EasyUAFileTransferClient
' Create two files, and delete the first one.
Try
' The file system node is a root directory of the file system.
Console.WriteLine("Getting file system...")
Dim fileSystemNodeDescriptor As UANodeDescriptor = fileTransferClient.GetFileSystem(endpointDescriptor, objectDescriptor)
Dim fileName1 As String = "MyFile1-" & random.Next()
Console.WriteLine($"Creating first file, '{fileName1}'...")
Dim fileNodeId1 As UANodeId = fileTransferClient.CreateFile(endpointDescriptor, fileSystemNodeDescriptor, fileName1)
Console.WriteLine($"Node Id of the first file: {fileNodeId1}")
Dim fileName2 As String = "MyFile2-" & random.Next()
Console.WriteLine($"Creating second file, '{fileName2}'...")
Dim fileNodeId2 As UANodeId = fileTransferClient.CreateFile(endpointDescriptor, fileSystemNodeDescriptor, fileName2)
Console.WriteLine($"Node Id of the second file: {fileNodeId2}")
Console.WriteLine("Deleting the first file...")
fileTransferClient.DeleteFile(endpointDescriptor, fileSystemNodeDescriptor, fileName1)
Catch uaException As UAException
Console.WriteLine("*** Failure: {0}", uaException.GetBaseException.Message)
Exit Sub
End Try
Console.WriteLine("Finished...")
End Sub
End Class
End Namespace
