sql-tools/sql 队列.sql

use master
go


drop  database Inventory
go

 
Create database Inventory
go
use Inventory
go


Create table inventory
(
    TitleId nvarchar(6) not null,
    Quantity int not null,
    primary key (TitleId,Quantity)
);
go

insert inventory values ('pc1001',100);
insert inventory values ('pc1002',200);
insert inventory values ('pc1003',300);
insert inventory values ('pc1004',400);



---------
 exec sp_executesql N'SELECT
mt.name AS [Name],
''Server[@Name='' + quotename(CAST(serverproperty(N''Servername'') AS sysname),'''''''') + '']'' + ''/Database[@Name='' + quotename(db_name(),'''''''') + '']'' + ''/ServiceBroker'' + ''/MessageType[@Name='' + quotename(mt.name,'''''''') + '']'' AS [Urn],
mt.message_type_id AS [ID]
FROM
sys.service_message_types mt
WHERE
(CAST(case when mt.message_type_id < 65536 then 1 else 0 end AS bit)=@_msparam_0)
ORDER BY
[Name] ASC',N'@_msparam_0 nvarchar(4000)',@_msparam_0=N'0'


    IF NOT EXISTS(SELECT * FROM sys.service_message_types WHERE name = '//saidao/types/perf')
    BEGIN
        Create Message Type [//saidao/types/perf]
    END
    IF NOT EXISTS(SELECT * FROM sys.service_message_types WHERE name = '//saidao/types/perf_response')
    BEGIN
        Create Message Type [//saidao/types/perf_response] 
    END
    
    ---
    --创建合约
    IF NOT EXISTS(SELECT * FROM sys.service_contracts WHERE name = '//saidao/contracts/perf_contract')
    BEGIN
        Create contract  [//saidao/contracts/perf_contract]
        (
            [//saidao/types/perf] sent by initiator,
            [//saidao/types/perf_response] sent by target 
        );
    END

--创建队列与服务
    IF NOT EXISTS(SELECT * FROM sys.service_queues WHERE name = 'perf_queue')
    BEGIN
        create queue [perf_queue];
        create service [//saidao/services/perf]
        on queue [perf_queue]
        (
            [//saidao/contracts/perf_contract]
        );
    END


--发送消息到消息队列中

 
use Inventory
go

--send message
begin transaction
   
    declare @dialog_id uniqueidentifier
    begin dialog conversation @dialog_id
        from service [//saidao/services/perf]
        to service '//saidao/services/perf'
        on contract [//saidao/contracts/perf_contract]
        with encryption = off;
        send on conversation @dialog_id message type [//saidao/types/perf]
        (
        '<PerfUpdate>
        <FromDate>pc1001</FromDate>
        <ToDate>pc1001</ToDate>
        <CompId>102</CompId>
        </PerfUpdate>'   
        );

commit transaction;
        
        
        
   --发送成功后，可以查询 inventory_queue
 
select conversation_handle, cast(message_body as xml) as conversation_body from [perf_queue]


--其中conversation_body 就是 我们发出的信息了。

-- 从 inventory queue 中获取信息并更新数据

 
use inventory
go
begin transaction
    declare @dialog_id uniqueidentifier
    declare @message_body xml
    declare @amount int;
    declare @title nvarchar(128);

    receive
        @dialog_id = conversation_handle,
        @message_body = message_body
    from [dbo].[perf_queue]

    print 'handle is' + cast(@dialog_id as nvarchar(90))
    print 'message body is' + cast(@message_body as  nvarchar(max) )
    if(@dialog_id is not null)
    begin
        set @amount = @message_body.value('(/InventoryUpdate/Quantity)[1]','int');
        set @title = @message_body.value('(/InventoryUpdate/TitleId)[1]','nvarchar(100)');
        print 'a:'+cast(@amount as nvarchar(100))
        print 'b:'+@title;

        Update inventory set Quantity = @amount where TitleId = @title;
        end
        end conversation @dialog_id;
    commit transaction ;
    
--接下来做个自动监听功能，只要有信息发送到队列，相关队列，就可以自动执行功能.

--首先建立个存储过程，（把receive 中的那段代码拿过来就可以了）
 
use Inventory
go
--create procedure to receive message and update table
create proc InventoryProc as



begin transaction
    declare @dialog_id uniqueidentifier
    declare @message_body xml
    declare @amount int;
    declare @title nvarchar(128);

    waitfor(
    receive
        @dialog_id = conversation_handle,
        @message_body = message_body
    from [dbo].[perf_queue]),timeout 50000;

    print 'handle is' + cast(@dialog_id as nvarchar(90))
    print 'message body is' + cast(@message_body as  nvarchar(max) )
    if(@dialog_id is not null)
    begin
        set @amount = @message_body.value('(/InventoryUpdate/Quantity)[1]','int');
        set @title = @message_body.value('(/InventoryUpdate/TitleId)[1]','nvarchar(100)');
        print 'a:'+cast(@amount as nvarchar(100))
        print 'b:'+@title;

        Update inventory set Quantity = @amount where TitleId = @title;
        end
        end conversation @dialog_id;
    commit transaction;
    go

--队列监听
 
alter queue [perf_queue]
        with activation(
            status = on,
            procedure_name=    InventoryProc,
            max_queue_readers=2,
            execute as self
        );

        go
        
        

完成后，只要发送队列信息后，就可以了

PS： 我们定义了 两个队列 还有个 inventory client queue

这个队列保存的是成功或者error 提示。用receive 方法也可以提取出来。
复制代码 代码如下:

select message_type_name from [perf_queue]