CN102427419A - Method for supporting poly-morphism function of message bus - Google Patents
Method for supporting poly-morphism function of message bus Download PDFInfo
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- CN102427419A CN102427419A CN201110227300XA CN201110227300A CN102427419A CN 102427419 A CN102427419 A CN 102427419A CN 201110227300X A CN201110227300X A CN 201110227300XA CN 201110227300 A CN201110227300 A CN 201110227300A CN 102427419 A CN102427419 A CN 102427419A
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Abstract
The invention discloses a method for supporting a poly-morphism function of a message bus. The method is characterized in that a morphism identification and progress identification binary group is utilized to indentify message examples; even if a plurality of morphisms are operated on a same node, each message example can be conveniently distinguished; message channels are divided into a logical channel and a physical channel according to information; and the logical channel is mapped to the only physical channel according to belonged states and certain rules. The logical channel is directly used by an application program and facilitates the use of the application progress; the physical channel is used for the message bus to perform communication and management so that the messages among the different morphisms can be isolated from a network communication level. According to the method provided by the invention, the normal communication between progresses at the same morphism can be conveniently realized and the progresses between the different morphisms cannot communicate with each other, thereby meeting the requirements of a poly-morphism application environment in an automatic scheduling system.
Description
Technical field
The present invention relates to a kind of messaging bus and support the method for polymorphic function, be used for satisfying the needs of dispatch automated system, belong to the power network schedule automation field polymorphic applied environment.
Background technology
In automation system for the power network dispatching now; The combination of the application service routine that to be a data entity and a group handle this data entity, the composition of using such as SCADA has: the real-time storehouse of SCADA, data, services process, operate services process, remote signalling remote measurement and operating mode are handled service processes etc.Attitude is the set for one group of application accomplishing some objective function, and processing logic that this group is used is identical, and data entity has certain incidence relation, but the data environment of operation is different.Application between the attitude has separately independently data entity and service processes, and processing logic does not disturb mutually.Can move a plurality of attitudes simultaneously on same the node.
Under polymorphic environment; An identical process can be moved respectively in different attitudes, and in each process, the messaging bus instance can be subscribed to identical passage; And messaging bus is as the bottom communication support of dispatch automated system, requires again that each channel number is unique in whole system.Existing messaging bus (message-oriented middleware) product is not supported this function.
Summary of the invention
The technical problem that the present invention will solve provides the method that a kind of messaging bus is supported polymorphic function, satisfies dispatch automated system to polymorphic applied environment needs.
For solving the problems of the technologies described above, the method that the present invention provides a kind of messaging bus to support polymorphic function, defining an instance with self message attributes and one group of message operating function interface is a message instance.
The invention is characterized in and may further comprise the steps:
(1), the definition message instance, message instance is carried out initialization, initialization information comprises attitude sign, process identification (PID);
(2), message instance is through the subscribing interface subscribe message, logical channel is mapped as unique physical channel in the messaging bus according to attitude under the message instance, is recorded in this node subscription information table;
(3), messaging bus is broadcast to other nodes with the property information cycle property in the node subscription information table;
(4), messaging bus receives the subscription information that other nodes send over;
(5), when message instance sends a message to a certain passage through transmission interface, logical channel is mapped as unique physical channel according to attitude under the message instance, messaging bus sends a message on the node of subscribing to this physical channel;
(6), after messaging bus receives message,, find out the message instance of subscribing to this physical channel, again message is submitted to these message instance according to the mapping ruler of logical channel to the physical channel.
Aforesaid a kind of messaging bus is supported the method for polymorphic function; It is characterized in that: in step 1); Message instance has attitude sign, process identification (PID) doublet; This doublet unique identification a message instance, even operation still can conveniently be distinguished each message instance during a plurality of attitude on same node.
Aforesaid a kind of messaging bus is supported the method for polymorphic function, it is characterized in that: in step 2), 3) in, message channel information is divided into logical channel and physical channel, logical channel is mapped as unique physical channel according to affiliated attitude and certain rule.The logical channel programs is directly used, and makes things convenient for application program to use; Use when the physical channel supplies messaging bus to communicate, isolated the not message between the homomorphism from the network service level.During subscription information, logical channel is mapped as the physical channel, be kept in the subscription information table of this node, and periodic broadcasting is to other nodes.
The beneficial effect that the present invention reached:
Use message instance of a doublet unique identification, realized isolating each other between the message instance, can move the message instance of a plurality of attitudes on the same node; Message channel is divided into logical channel and physical channel; Logical channel is convenient to application program and is used, and the application process of homomorphism can not subscribed to identical logical channel when using the messaging bus instance, has simplified program structure, the whole strong maintainability of application program; Messaging bus internal control and maintenance are convenient in the physical channel, on the network service level, have just isolated the not message between the homomorphism fully, guarantee the principle that message between the attitude can not mutual communication.
Description of drawings
Fig. 1 logical channel and physical channel corresponding relation figure;
Fig. 2 is the message transmission flow figure that supports polymorphic function;
Fig. 3 is a message sink flow chart of supporting polymorphic function.
Embodiment
Below in conjunction with accompanying drawing messaging bus mechanism of the present invention is done further detailed introduction.
Fig. 1 is logical channel and physical channel mapping relations figure, and same logical channel be not mapped as different physical channels under the homomorphism, and messaging bus directly uses the physical channel to communicate on the communication level.
Fig. 2 is the message transmission flow figure that supports polymorphic function.
Context
iUnder the attitude, App
aUse process Proc down
pNeed be to channel C hannel
xSend message, at first define message instance, and carry out initialization, initiation parameter does<context
i, Proc
p, Procp_alias1>, message instance is called transmission interface and is sent message, logical channel Channel
xBe mapped as physical channel channel
x, channel is subscribed in the messaging bus inspection
1Node, message is sent to these nodes.
Fig. 3 is a message sink flow chart of supporting polymorphic function.
Context
iUnder the attitude, App
bUse process Proc down
qNeed receive path Channel
xMessage, at first define message instance, and carry out initialization, initiation parameter does<context
i, Proc
x, Procq_alias1>, message instance is called subscribing interface and is subscribed to Channel
x, logical channel Channel
xBe mapped as physical channel channel
x, messaging bus all physical channels of this node subscription information periodically through broadcasting to other nodes.After the message that receives on the network, all subscribe to channel on this node of messaging bus inspection
xMessage instance, and message passed to these message instance.Process Proc
qObtain message through calling receiving interface.
The present invention is illustrated according to the preferred embodiment, should be appreciated that the foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.
Claims (3)
1. a messaging bus is supported the method for polymorphic function, comprises following steps:
1) the definition message instance is carried out initialization to message instance, and initialization information comprises attitude, process identification (PID) name;
2) message instance is through the subscribing interface subscribe message, and logical channel is mapped as unique physical channel in the messaging bus according to attitude under the message instance, is recorded in this node subscription information table;
3) messaging bus is broadcast to other nodes with the property information cycle property in the node subscription information table;
4) messaging bus receives the subscription information that other nodes send over;
When 5) message instance sent a message to a certain passage through transmission interface, logical channel was mapped as unique physical channel according to attitude under the message instance, and messaging bus sends a message on the node of subscribing to this physical channel;
6) after messaging bus receives message,, find out the message instance of subscribing to this physical channel, again message is submitted to these message instance according to the mapping ruler of logical channel to the physical channel.
2. a kind of messaging bus according to claim 1 is supported the method for polymorphic function; It is characterized in that: in step 1); Message instance has attitude sign, process identification (PID) doublet; The doublet unique identification message instance, even operation still can conveniently be distinguished each message instance during a plurality of attitude on same node.
3. a kind of messaging bus according to claim 1 is supported the method for polymorphic function; It is characterized in that: in step 2), 3) in; Message channel information is divided into logical channel and physical channel; Logical channel is mapped as unique physical channel according to affiliated attitude and certain rule, and the logical channel programs is directly used, and makes things convenient for application program to use; Use when the physical channel supplies messaging bus to communicate, isolated the not message between the homomorphism from the network service level, during subscription information, logical channel is mapped as the physical channel, be kept in the subscription information table of this node, and periodic broadcasting is to other nodes.
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| CN201110227300.XA CN102427419B (en) | 2011-08-09 | 2011-08-09 | Method for supporting poly-morphism function of message bus |
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| CN201110227300.XA CN102427419B (en) | 2011-08-09 | 2011-08-09 | Method for supporting poly-morphism function of message bus |
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| CN102427419B CN102427419B (en) | 2014-03-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103368693A (en) * | 2013-07-04 | 2013-10-23 | 国家电网公司 | Method for reliably transmitting data of power distribution network information exchange bus |
| WO2014086143A1 (en) * | 2012-12-04 | 2014-06-12 | 中国科学院沈阳自动化研究所 | Message bus implementation method oriented for complicated production process management system |
| CN109710432A (en) * | 2018-12-29 | 2019-05-03 | 苏州思必驰信息科技有限公司 | For the multi-node communication method and system in application development |
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| CN107943579B (en) * | 2017-11-08 | 2022-01-11 | 深圳前海微众银行股份有限公司 | Resource bottleneck prediction method, device, system and readable storage medium |
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| WO2014086143A1 (en) * | 2012-12-04 | 2014-06-12 | 中国科学院沈阳自动化研究所 | Message bus implementation method oriented for complicated production process management system |
| CN103368693A (en) * | 2013-07-04 | 2013-10-23 | 国家电网公司 | Method for reliably transmitting data of power distribution network information exchange bus |
| CN103368693B (en) * | 2013-07-04 | 2016-12-28 | 国家电网公司 | A kind of method of power distribution network interexchange bus reliable data transmission |
| CN109710432A (en) * | 2018-12-29 | 2019-05-03 | 苏州思必驰信息科技有限公司 | For the multi-node communication method and system in application development |
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| CN102427419B (en) | 2014-03-26 |
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Effective date of registration: 20141215 Address after: High road high tech Development Zone Nanjing city Jiangsu province 210061 No. 20 Patentee after: NARI Technology Development Co., Ltd. Patentee after: SGCC NARI Nanjing Control System Co., Ltd. Address before: High road high tech Development Zone Nanjing city Jiangsu province 210061 No. 20 Patentee before: NARI Technology Development Co., Ltd. |