我不明白为什么以下引用的以下处理程序(processMessageAsync)没有为特定主题名称触发,而为其他主题名称成功触发:
subscriptionClient.RegisterMessageHandler(processMessageAsync, msgOptions)
以下是我的订户类:
open System
open System.Linq
open System.Threading
open System.Text
open System.Threading.Tasks
open Microsoft.Azure.ServiceBus
type Subscriber(connectionString:string, topic:string, subscription:string) =
let mutable subscriptionClient : SubscriptionClient = null
let exceptionReceivedHandler (args:ExceptionReceivedEventArgs) =
printfn "Got an exception: %A" args.Exception
Task.CompletedTask
let processMessageAsync (message:Message) (_:CancellationToken) =
try
let _ = Encoding.UTF8.GetString(message.Body)
subscriptionClient.CompleteAsync(message.SystemProperties.LockToken) |> Async.AwaitTask |> Async.RunSynchronously
Task.CompletedTask
with
_ -> Task.CompletedTask
member x.Listen() =
async {
subscriptionClient <- new SubscriptionClient(connectionString, topic, subscription)
subscriptionClient.OperationTimeout <- TimeSpan.FromMinutes(3.0)
let! rulesFound = subscriptionClient.GetRulesAsync() |> Async.AwaitTask
let hasDefaultRule = rulesFound.Any(fun r -> r.Name = RuleDescription.DefaultRuleName)
if hasDefaultRule then
do! subscriptionClient.RemoveRuleAsync(RuleDescription.DefaultRuleName) |> Async.AwaitTask
let msgOptions = MessageHandlerOptions(fun args -> exceptionReceivedHandler(args))
msgOptions.AutoComplete <- false
msgOptions.MaxAutoRenewDuration <- TimeSpan.FromMinutes(1.0)
msgOptions.MaxConcurrentCalls <- 1
subscriptionClient.RegisterMessageHandler(processMessageAsync, msgOptions)
}
member x.CloseAsync() =
async {
do! subscriptionClient.CloseAsync() |> Async.AwaitTask
}
这是我尝试运行订阅服务器的方法:
open System
open Subscription.Console
let connectionString = <connection_string>
[<EntryPoint>]
let main argv =
printfn "Welcome to Subscription.Console"
let topic,subscription = "Topic.courier-accepted","Subscription.all-messages"
let subscriber = Subscriber(connectionString, topic, subscription)
async { do! subscriber.Listen()
} |> Async.RunSynchronously
Console.ReadKey() |> ignore
async { do! subscriber.CloseAsync()
} |> Async.RunSynchronously
0 // return an integer exit code
以下代码发布了我的订户应该收到(但没有收到)的消息:
[<Fact>]
let ``Publish courier-accepted to servicebus``() =
async {
// Setup
let client = TopicClient(sbConnectionstring, "Topic.courier-accepted")
let! requestId = requestId()
let updated = requestId |> modifyRequestId someCourierResponse
let json = JsonConvert.SerializeObject(updated)
let message = Message(Encoding.UTF8.GetBytes(json))
message.Label <- sprintf "request-id(%s)" (requestId.ToString())
// Test
do! client.SendAsync(message) |> Async.AwaitTask
// Teardown
do! client.CloseAsync() |> Async.AwaitTask
}
注意:
上面的代码有趣的是,当我运行的Azure Function的ServiceBusTrigger设置为相同的主题和订阅名称时,每次运行测试都会触发Azure Function。
- 我没有收到任何异常消息
- 我的订户实例上永远不会触发exceptionReceivedHandler函数
- 我在Azure仪表板上没有发现任何针对Servicebus资源的用户错误
成功使用不同的主题名称
如果我将主题名称更改为“ courier-requested”,则订阅者实例将收到消息:
[<Fact>]
let ``Publish courier-requested to servicebus topic``() =
// Setup
let client = TopicClient(sbConnectionstring, "Topic.courier-requested")
let message = Message(Encoding.UTF8.GetBytes(JsonFor.courierRequest))
message.Label <- sprintf "courier-id(%s)" "b965f552-31a4-4644-a9c6-d86dd45314c4"
// Test
async {
do! client.SendAsync(message) |> Async.AwaitTask
do! client.CloseAsync() |> Async.AwaitTask
}
这是具有主题名称调整的订阅:
[<EntryPoint>]
let main argv =
printfn "Welcome to Subscription.Console"
let topic,subscription = "Topic.courier-requested","Subscription.all-messages"
let subscriber = Subscriber(connectionString, topic, subscription)
async { do! subscriber.Listen()
} |> Async.RunSynchronously
Console.ReadKey() |> ignore
async { do! subscriber.CloseAsync()
} |> Async.RunSynchronously
0 // return an integer exit code
在门户网站中单击主题具有不同的结果:
我注意到我必须单击两次“接受快递”才能查看其订阅。但是,我可以单击“快递要求”,然后立即查看其订阅。
在为速递接受的主题创建其他订阅,使用与我刚在门户中注册的订阅值匹配的订阅值启动订阅者,然后在订阅者仍在运行时删除最近创建的订阅之后,我确实观察到异常。
—
Scott Nimrod
我无法重现您的问题,似乎您在服务总线门户上遇到了不正常的行为。也许您可以向SB团队提交支持票。
—
周杰伦
我昨天提交了票。
—
Scott Nimrod
I don't receive any exception messages
,也许是因为您吞下了异常?我看到一个with _
块后try
一个