dohertj2/lmxopcua
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add client-side failover to CLI tool for redundancy testing

Browse Source 
All commands gain --failover-urls (-F) to specify alternate endpoints.
Short-lived commands try each URL in order on initial connect. The
subscribe command monitors KeepAlive and automatically reconnects to
the next available server, re-creating the subscription on failover.
Verified with live service start/stop: primary down triggers failover
to secondary, primary restart allows failback.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-03-28 14:41:06 -04:00
parent a55153d7d5
commit afd6c33d9d
11 changed files with 334 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
tools/opcuacli-dotnet/Commands/RedundancyCommand.cs
View File

@@ -21,9 +21,14 @@ public class RedundancyCommand : ICommand
[CommandOption("security", 'S', Description = "Transport security: none, sign, encrypt (default: none)")]
public string Security { get; init; } = "none";
[CommandOption("failover-urls", 'F', Description = "Comma-separated failover endpoint URLs for redundancy")]
public string? FailoverUrls { get; init; }
public async ValueTask ExecuteAsync(IConsole console)
{
using var session = await OpcUaHelper.ConnectAsync(Url, Username, Password, Security);
var urls = FailoverUrlParser.Parse(Url, FailoverUrls);
using var failover = new OpcUaFailoverHelper(urls, Username, Password, Security);
using var session = await failover.ConnectAsync();
// Read RedundancySupport
var redundancySupportValue = await session.ReadValueAsync(VariableIds.Server_ServerRedundancy_RedundancySupport);