![]() It’s not clear how to set brokered message properties via Logic Apps.Normally, we use XMLPorts, a traditional way to read data from any file into the NAV or Business Central database. It’s easy to set brokered message properties via code. Important: filters can only be defined on brokered message properties. Now when a message is sent to “TestTopic,” it is always delivered to receivers subscribed to the “AllMessages” topic subscription, and selectively delivered to receivers subscribed to the “HighMessages” and “LowMessages” topic subscriptions (depending on the message content). Create a “LowMessages” filtered subscription NamespaceManager.CreateSubscription(“TestTopic”, Create a “HighMessages” filtered subscription The following example creates a subscription named “HighMessages” with a SqlFilter that only selects messages that have a custom MessageNumber property greater than 3: For more information about the expressions that can be used with a SQL filter, see the SqlFilter.SqlExpression syntax: SQL filters operate on the properties of the messages that are published to the topic. The most flexible type of filter supported by subscriptions is the SqlFilter class, which implements a subset of SQL92. In other words: When you create a new subscription within the windows azure portal, you can not create a filter on the subscription! The only option to create a subscription with a filter is to use code. If you wanna create a subscription with a specific filter, you cannot do that via the Portal. NamespaceManager.CreateSubscription(“TestTopic”, “AllMessages”) If (!namespaceManager.SubscriptionExists(“TestTopic”, “AllMessages”)) NamespaceManager.CreateFromConnectionString(connectionString) Example:ĬloudConfigurationManager.GetSetting(“”) The MatchAll filter can also be created via code. This means that by default “ all messages published to the topic are placed in the subscription’s virtual queue”. The subscriptions we create via the Portal use the default MatchAll filter. We also Enable Dead Lettering on Filter Evaluation Exceptions which basically means the message will be send to the subscription dead letter queue if an exception occurs while trying to the apply the subscription filter on the message. We set the Lock Duration of the subscription to 1 minute, which stands for the lock duration of the message when using peeklock retrieval. You have to complete or abandon the message to have it removed from the queue. Instead the message gets locked, meaning it can not be processed again by anyone during the lock duration. PeekLock: The client retrieves the next message from the buffer, but does not remove it.Receive and delete: The client retrieves the next message from the buffer and immediately removes it from the buffer.Depending whether Dead Lettering is enabled, messages will be moved to the subscription dead letter queue or they will be removed permanently when the message expires. Default Message Time To Live. Message stays on the subscription for 84600 seconds (1 day) without being completed or removed.Brings messages that expire to the subscription deadletter queue. ![]() In this case we create a subscription named Warehouse to an Orders topic. Hit the New Subscription button and we will create a new subscription. After creating a topic, a button will become visible: They could subscribe to receive any message, but they can also apply filters on the incoming messages to only receive certain messages that comply to the defined filter.įirst let’s take a look at the subscriptions we can create via the Windows Azure Portal. The sender sends a message to a topic and anyone who could be interested in one of those messages, could subscribe to the topic. The Windows Azure Service Bus allows messaging using the publish/subscribe pattern via Topics and Subscriptions:
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