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36 changes: 36 additions & 0 deletions
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edge-hub/src/Microsoft.Azure.Devices.Routing.Core/MessageQueueIdHelper.cs
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// Copyright (c) Microsoft. All rights reserved. | ||
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namespace Microsoft.Azure.Devices.Routing.Core | ||
{ | ||
using System; | ||
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public static class MessageQueueIdHelper | ||
{ | ||
public const string MessageQueueIdDelimiter = "_Pri"; | ||
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// The actual ID for the underlying store is of string format: <endpointId>_Pri<priority> | ||
// We need to maintain backwards compatibility for existing sequential stores that don't have the "_Pri<x>" suffix. | ||
// We use the default priority (2,000,000,000) for this, which means the store ID is just the endpoint ID. | ||
public static string GetMessageQueueId(string endpointId, uint priority) => priority == RouteFactory.DefaultPriority ? endpointId : $"{endpointId}{MessageQueueIdDelimiter}{priority}"; | ||
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public static (string, uint) ParseMessageQueueId(string messageQueueId) | ||
{ | ||
var idx = messageQueueId.LastIndexOf(MessageQueueIdDelimiter); | ||
if (idx < 0) | ||
{ | ||
return (messageQueueId, RouteFactory.DefaultPriority); | ||
} | ||
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var endpointId = messageQueueId.Substring(0, idx); | ||
var priority = messageQueueId.Substring(idx + MessageQueueIdDelimiter.Length); | ||
if (uint.TryParse(priority, out var priorityNum)) | ||
{ | ||
return (endpointId, priorityNum); | ||
} | ||
else | ||
{ | ||
return (messageQueueId, RouteFactory.DefaultPriority); | ||
} | ||
} | ||
} | ||
} |
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