The example below shows how to copy an OPC UA file, using the file transfer client.
// Shows how to copy an OPC UA file, 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 C# on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-CSharp . // Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own // a commercial license in order to use Online Forums, and we reply to every post. 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 Copy { public static void File1() { // 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 a file, and a directory. Then, copy the file into the directory. 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 fileName = "MyFile-" + random.Next(); Console.WriteLine($"Creating file, '{fileName}'..."); UANodeId fileNodeId = fileTransferClient.CreateFile(endpointDescriptor, fileSystemNodeDescriptor, fileName); Console.WriteLine($"Node Id of the file: {fileNodeId}"); string directoryName = "MyDirectory-" + random.Next(); Console.WriteLine($"Creating directory, '{directoryName}'..."); UANodeId directoryNodeId = fileTransferClient.CreateDirectory(endpointDescriptor, fileSystemNodeDescriptor, directoryName); Console.WriteLine($"Node Id of the directory: {directoryNodeId}"); Console.WriteLine("Copying the file..."); fileTransferClient.CopyFile(endpointDescriptor, fileSystemNodeDescriptor, fileNodeId, directoryNodeId); } catch (UAException uaException) { Console.WriteLine("*** Failure: {0}", uaException.GetBaseException().Message); return; } Console.WriteLine("Finished..."); } } }
' Shows how to copy an OPC UA file, 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 VB.NET on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VBNET . ' Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own ' a commercial license in order to use Online Forums, and we reply to every post. 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 Copy Public Shared Sub File1() ' 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 a file, and a directory. Then, copy the file into the directory. 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 fileName As String = "MyFile-" & random.Next() Console.WriteLine($"Creating file, '{fileName}'...") Dim fileNodeId As UANodeId = fileTransferClient.CreateFile(endpointDescriptor, fileSystemNodeDescriptor, fileName) Console.WriteLine($"Node Id of the file: {fileNodeId}") Dim directoryName As String = "MyDirectory-" & random.Next() Console.WriteLine($"Creating directory, '{directoryName}'...") Dim directoryNodeId As UANodeId = fileTransferClient.CreateDirectory(endpointDescriptor, fileSystemNodeDescriptor, directoryName) Console.WriteLine($"Node Id of the directory: {directoryNodeId}") Console.WriteLine("Copying the file...") fileTransferClient.CopyFile(endpointDescriptor, fileSystemNodeDescriptor, fileNodeId, directoryNodeId) Catch uaException As UAException Console.WriteLine("*** Failure: {0}", uaException.GetBaseException.Message) Exit Sub End Try Console.WriteLine("Finished...") End Sub End Class End Namespace
# Shows how to copy an OPC UA file, 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 . # Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own # a commercial license in order to use Online Forums, and we reply to every post. # 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 a file, and a directory. Then, copy the file into the directory. try: # The file system node is a root directory of the file system. print('Getting file system...') fileSystemNodeDescriptor = IEasyUAFileTransferExtension.GetFileSystem(fileTransferClient, endpointDescriptor, objectDescriptor) fileName = 'MyFile-' + str(random.randint(0, 999_999_999)) print("Creating file, '", fileName, "'...", sep='') fileNodeId = IEasyUAFileTransferExtension.CreateFile(fileTransferClient, endpointDescriptor, fileSystemNodeDescriptor, fileName) print('Node Id of the file: ', fileNodeId, sep='') directoryName = 'MyDirectory-' + str(random.randint(0, 999_999_999)) print("Creating directory, '", directoryName, "'...", sep='') directoryNodeId = fileTransferClient.CreateDirectory(endpointDescriptor, fileSystemNodeDescriptor, directoryName) print('Node Id of the directory: ', directoryNodeId, sep='') print('Copying the file...') IEasyUAFileTransferExtension.CopyFile(fileTransferClient, endpointDescriptor, fileSystemNodeDescriptor, fileNodeId, directoryNodeId) # If you want browse for directories, use the BrowseDirectories method instead. except UAException as uaException: print('*** Failure: ' + uaException.GetBaseException().Message) exit() print() print('Finished.')
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