Question

我们有一个工作（主要是）Service Broker设置。一个问题是我们忘记在合同中添加消息类型（EndTransmission），因此我创建了一个新合同并将其添加到两个服务中。

CREATE CONTRACT [http://bob.us/Locations/Contracts/VolatileData3] 
([http://bob.us/Locations/MessageTypes/Resource/EndTransmission] SENT BY ANY)

ALTER SERVICE [//Locations/Here/Send/VolatileDataReceiveService]
    (ADD CONTRACT [http://bob.us/Locations/Contracts/VolatileData3]) ;

ALTER SERVICE [//Locations/Here/Send/VolatileDataSendService]
    (ADD CONTRACT [http://bob.us/Locations/Contracts/VolatileData3]) ;

我仍然收到EndTransmission不属于服务合同的错误。我还需要做其他事吗？我无法设置新的经纪人，因为我在可用性组中。

我想在一项服务上签订两份合同。据我所知，这是可以接受的。我知道在添加第二份合同时我没有收到错误。

Answer 1

您的新合同应包含上一个合同中的所有消息，和新消息。您只需要将合同绑定到目标服务。

错误似乎表明你仍然在BEGIN DIALOG中使用旧合约。

举一个例子：说你有一份使用两种消息类型的合同：

CREATE CONTRACT [http://bob.us/Locations/Contracts/VolatileData1]
 ([http://bob.us/Locations/MessageTypes/Resource/Request] SENT BY INITIATOR,
 [http://bob.us/Locations/MessageTypes/Resource/Response] SENT BY TARGET);
CREATE SERVICE [//Locations/Here/Send/VolatileDataReceiveService] ON [...]
([http://bob.us/Locations/Contracts/VolatileData1]) ;

现在您意识到需要添加EndTransmision消息类型。您将创建一个包含所有三种消息类型的新合同：

CREATE CONTRACT [http://bob.us/Locations/Contracts/VolatileData2]
 ([http://bob.us/Locations/MessageTypes/Resource/Request] SENT BY INITIATOR,
 [http://bob.us/Locations/MessageTypes/Resource/Response] SENT BY TARGET,
 [http://bob.us/Locations/MessageTypes/Resource/EndTransmission] SENT BY ANY);
ALTER SERVICE [//Locations/Here/Send/VolatileDataReceiveService]
 (ADD CONTRACT [http://bob.us/Locations/Contracts/VolatileData2]) ;

现在使用新合约开始所有新对话框。

在Service Broker中向服务添加合同之后

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