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fix(localdb): materialise the address space from the cached blob on boot-from-cache

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Boot-from-cache told OpcUaPublishActor to RebuildAddressSpace(deploymentId), which
re-loads the artifact from the ConfigDb by id — the very database that is
unreachable during the outage this path exists to survive. The rebuild no-op'd, so
a cache-booted node ran its drivers but served OPC UA clients an EMPTY address
space. RebuildAddressSpace now carries an optional in-hand Artifact blob;
ApplyCachedArtifact passes the cached bytes so materialisation happens from them
directly. Found on the docker-dev live gate: healthy peer served 16 nodes, the
cache-booted node served 1.
This commit is contained in:
Joseph Doherty
2026-07-20 22:38:54 -04:00
parent ce9fa07ff8
commit 9137cb41eb
3 changed files with 50 additions and 9 deletions
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tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DriverHostActorBootFromCacheTests.cs
+25
View File
@@ -11,6 +11,7 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
using ZB.MOM.WW.OtOpcUa.Runtime.DeploymentCache;
using ZB.MOM.WW.OtOpcUa.Runtime.Drivers;
using ZB.MOM.WW.OtOpcUa.Runtime.OpcUa;
using ZB.MOM.WW.OtOpcUa.Runtime.Tests.Harness;
namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Drivers;
@@ -55,6 +56,30 @@ public sealed class DriverHostActorBootFromCacheTests : RuntimeActorTestBase
cache.UnkeyedReads.ShouldBe(1);
}
[Fact]
public void BootFromCache_HandsTheCachedArtifactToTheAddressSpaceRebuild()
{
// The client-facing address space rebuild must materialise from the CACHED bytes, not from a
// ConfigDb read keyed by deployment id — that read is exactly what is unreachable during the
// outage boot-from-cache exists to survive. Without the blob, the node logs "running from
// cache", spins up its drivers, and still serves OPC UA clients an empty server. (Regression
// for the defect the docker-dev live gate caught: 16 nodes on the healthy peer, 1 here.)
var blob = EmptyArtifact();
var cached = new CachedDeploymentArtifact(
DeploymentId.NewId().ToString(), CachedRev.Value, blob, DateTimeOffset.UtcNow.AddHours(-1));
var publishProbe = CreateTestProbe();
Sys.ActorOf(DriverHostActor.Props(
new ThrowingDbFactory(), TestNode, coordinator: null,
localRoles: new HashSet<string> { "driver" },
opcUaPublishActor: publishProbe.Ref,
deploymentArtifactCache: new StubArtifactCache(cached)));
var rebuild = publishProbe.ExpectMsg<OpcUaPublishActor.RebuildAddressSpace>(TimeSpan.FromSeconds(5));
rebuild.Artifact.ShouldNotBeNull();
rebuild.Artifact.ShouldBe(blob);
}
[Fact]
public void CentralUnreachableAndCacheEmpty_StaysStaleWithNoConfiguration()
{