Joseph Doherty
83 lines
2.9 KiB
C#
83 lines
2.9 KiB
C#
using Grpc.Core;
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using ZB.MOM.WW.MxGateway.Contracts.Proto.Galaxy;
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using ZB.MOM.WW.MxGateway.Server.Galaxy;
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namespace ZB.MOM.WW.MxGateway.Server.Dashboard;
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/// <summary>
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/// Default <see cref="IDashboardBrowseService"/>. Delegates to
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/// <see cref="GalaxyBrowseProjector"/> via the shared
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/// <see cref="IGalaxyHierarchyCache"/>; no SQL hop, no gRPC self-call. Translates
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/// the projector's <see cref="RpcException"/> on unknown parent into a friendly
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/// <see cref="BrowseLevelResult.Error"/> so the Blazor circuit does not see an
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/// unhandled exception.
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/// </summary>
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public sealed class DashboardBrowseService(IGalaxyHierarchyCache cache) : IDashboardBrowseService
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{
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/// <inheritdoc />
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public ulong CurrentCacheSequence => (ulong)cache.Current.Sequence;
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/// <inheritdoc />
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public BrowseLevelResult GetRoots(BrowseFilterArgs filter)
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=> ProjectLevel(parentId: null, filter);
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/// <inheritdoc />
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public BrowseLevelResult GetChildren(int parentGobjectId, BrowseFilterArgs filter)
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=> ProjectLevel(parentId: parentGobjectId, filter);
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private BrowseLevelResult ProjectLevel(int? parentId, BrowseFilterArgs filter)
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{
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ArgumentNullException.ThrowIfNull(filter);
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GalaxyHierarchyCacheEntry entry = cache.Current;
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if (!entry.HasData)
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{
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return new BrowseLevelResult(
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Array.Empty<DashboardBrowseNode>(),
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0,
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(ulong)entry.Sequence,
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Error: "Galaxy hierarchy is not loaded yet.");
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}
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BrowseChildrenRequest request = new()
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{
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TagNameGlob = filter.TagNameGlob ?? string.Empty,
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AlarmBearingOnly = filter.AlarmBearingOnly,
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HistorizedOnly = filter.HistorizedOnly,
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};
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if (parentId is int pid)
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{
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request.ParentGobjectId = pid;
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}
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try
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{
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GalaxyBrowseChildrenResult result = GalaxyBrowseProjector.ProjectChildren(
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entry,
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request,
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browseSubtreeGlobs: null,
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offset: 0,
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pageSize: int.MaxValue);
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List<DashboardBrowseNode> nodes = new(result.Children.Count);
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for (int i = 0; i < result.Children.Count; i++)
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{
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nodes.Add(new DashboardBrowseNode
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{
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Object = result.Children[i],
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HasChildrenHint = result.ChildHasChildren[i],
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});
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}
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return new BrowseLevelResult(nodes, result.TotalChildCount, (ulong)entry.Sequence);
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}
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catch (RpcException ex) when (ex.StatusCode == StatusCode.NotFound)
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{
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return new BrowseLevelResult(
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Array.Empty<DashboardBrowseNode>(),
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0,
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(ulong)entry.Sequence,
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Error: ex.Status.Detail);
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}
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}
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}
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