CN103761235A - Distribution method and application of universal power data platform - Google Patents
Distribution method and application of universal power data platform Download PDFInfo
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Abstract
The invention provides a distribution method of a universal power data platform. OSGi (Open Service Gateway initiative) specifications and WebService technology are taken as the bottom implementation mechanisms of the method; a typical design mode of chain of responsibility is introduced, an interceptor is arranged between a client and a server, and the interceptor is enabled to automatically intercept and forward all remote service calls initiated by the client, and therefore, the programming model of the original OSGi specifications is maintained as much as possible while the platform distribution is realized, and furthermore, a power data integration platform is enabled to have the ability of detecting metadata change and executing corresponding service operations.
Description
Technical field
The invention belongs to electric power system data management domain, be specifically related to a kind of distribution methods and applications of universal electric power data platform.
Background technology
Current electric power data Integrated Solution is mainly realized the format exchange of isomery electric power data by SOA/Web Service technology, the essence of this scheme is using electric power data to be converted as parameter, be encapsulated as SOAP message call and be sent to intended application, it provides the mis system support of simple services better to some, but at aspects such as the transparent distribution of data process method, the subscribing notifications of data variation event, still have some deficits, and these are all vital for promoting electric power application system to the capability of fast response of data change.
Also have some schemes by P2P technology or service-oriented Middleware Model, to carry out the OSGi standard of extension standards, although better solved the issue of distributed environment medium-long range service and the problem of obtaining, but because the standard program model to OSGi has done larger change, cause being difficult to scheme to directly apply to reality, also have the invasive problem of distributed logic simultaneously.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of distribution method of universal electric power data platform, make distribution logic invade original service logic in lowland as far as possible, and guarantee hot plug and the version updating characteristic of business module under system uninterrupted operation prerequisite.
To achieve these goals, the technical solution used in the present invention is:
A distribution method for universal electric power data platform, comprising:
Based on the distributed extended model of OSGi, when keeping original programming model of OSGi, service describing and the access mechanisms such as the WSDL/SOAP of usage platform neutrality, automatically tackle and forward coming from the call request of client.
The passive inspection of universal electric power metadata change events and active subscribing/notifying, the lasting variation of electric power data will repeatedly trigger some service logic, be the event source data of internal system often in electric system, but not be positioned at user or the other system of system outside.Therefore, electric power data integrated platform must possess survey metadata changes and carry out corresponding service operate ability.。
The described distributed extended model based on OSGi:
Step 1: based on typical responsibility chain Design Mode, introduce blocker (Interceptor) between service consumer (Client) and ISP (Server);
Step 2: for OSGi module is write corresponding blocker module, the latter is getting after OSGi container context, hold-up interception method (doIntercept) is encapsulated as to OSGi and serves and be published to registration center (ZooKeeper Server);
Step 3: realize the call request that comes from Client is tackled by the newly-increased Service events audiomonitor hook of OSGi R4.3 standard (Service Event Listener Hook), then goal approach is mated with the configuration (similar with the configuration information of Spring AOP) that inweaves of appointment;
Step 4: the correct position that by braiding hook (Weaving Hook), the tangent plane logic matching (with the syntactic definition of AspectJ) is inweaved to doIntercept method;
Step 5: forward all remote service of being initiated by service consumer by blocker and call.
The passive test mode of described universal electric power metadata change events:
Step 1: introduce task dispatcher in the administration and supervision authorities of universal electric power data platform, the latter is that in platform, each module instance starts a special watcher thread;
Step 2: watcher thread pulls (pull) metadata associated with module instance with Fixed Time Interval, and check its whether consistent with before, if change, by task pipe scheduler, adjust back corresponding interface method.
The active subscribing/notifying mode of described universal electric power metadata change events:
Step 1: introduce the event-based model in GUI programming, specify the subscriber of one or more module instance as data variation event in the mode that configures as metadata example;
Step 2: when occurring during data writing operation, first metadata example is event object by the data encapsulation of variation, then this event object active push (push) in each subscriber's event queue;
Step 3: task dispatcher starts an overall watcher thread and scans each subscriber's event queue, and notifies and trigger corresponding service logic as event subscription person's corresponding module example.
Compared with prior art, tool has the following advantages in the present invention:
(1), kept original programming model of OSGi standard.
(2) service describing and the access mechanism such as WSDL/SOAP of platform-neutral, have been used.
(3), allow service access request and response to carry complicated self-defining data type.
(4), transparent module distribution and electric power metadata change notification mechanism.
Accompanying drawing explanation
Fig. 1 is bottom architecture of the present invention and interaction models schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figure 1, the present invention is a kind of distribution method of universal electric power data platform, by introducing typical responsibility chain Design Mode, between service consumer (Client) and ISP (Server), blocker (Interceptor) is set, and by the latter, automatically tackle and forward all remote service of being initiated by Client and call, thereby guarantee in implementation platform distribution, make distribution logic invade original service logic in lowland as far as possible.
Embodiment 1, exports to target database by the metadata of remote input layer by local output layer.
Remote input layer module instance is published to registration center; This locality output layer module (Meta2DB) Query By Example registration center obtains and subscribes to respective meta-data; When metadata changes, initiatively adjust back the interface of Meta2DB example, and inweave required the affair logic by the blocker module corresponding with Meta2DB example.
Embodiment 2 imports metadata from remote input layer, after local metadata layer instance processes, metadata is exported to long-range output layer.
Remote input layer module (Db2Meta) example and long-range output layer module (Meta2DB) example are published to registration center; The service that local metadata layer module (Metadata) Query By Example registration center obtains long-range Db2Meta example, and to the metadata obtaining filter, combine, the processing such as sequence; The service that this locality metadata layer module (Metadata) Query By Example registration center obtains long-range Meta2DB example, and metadata after treatment is exported to target database.
Claims (4)
1. a distribution method for universal electric power data platform, is characterized in that, comprising:
Based on the distributed extended model of OSGi standard, when keeping original programming model of OSGi, service describing and the access mechanisms such as the WSDL/SOAP of usage platform neutrality, automatically tackle and forward coming from the call request of client;
The passive inspection of universal electric power metadata change events and active subscribing/notifying, the lasting variation of electric power data will repeatedly trigger some service logic, be the event source data of internal system often in electric system, but not be positioned at user or the other system of system outside;
Therefore, electric power data integrated platform must possess survey metadata changes and carry out corresponding service operate ability.
2. the distribution method of universal electric power data platform according to claim 1, is characterized in that, the described distributed extended model based on OSGi:
Step 1: based on typical responsibility chain Design Mode, introduce blocker (Interceptor) between service consumer (Client) and ISP (Server);
Step 2: for OSGi module is write corresponding blocker module, the latter is getting after OSGi container context, hold-up interception method (doIntercept) is encapsulated as to OSGi and serves and be published to registration center (ZooKeeper Server);
Step 3: realize the call request that comes from Client is tackled by the newly-increased Service events audiomonitor hook of OSGi R4.3 standard (Service Event Listener Hook), then goal approach is mated with the configuration (similar with the configuration information of Spring AOP) that inweaves of appointment;
Step 4: the correct position that by braiding hook (Weaving Hook), the tangent plane logic matching (with the syntactic definition of AspectJ) is inweaved to hold-up interception method doIntercept;
Step 5: forward all remote service of being initiated by service consumer by blocker and call.
3. the distribution method of universal electric power data platform according to claim 1, is characterized in that, the passive test mode of described universal electric power metadata change events:
Step 1: introduce task dispatcher in the administration and supervision authorities of universal electric power data platform, the latter is that in platform, each module instance starts a special watcher thread;
Step 2: watcher thread pulls (pull) metadata associated with module instance with Fixed Time Interval, and check its whether consistent with before, if change, by task pipe scheduler, adjust back corresponding interface method.
4. the distribution method of universal electric power data platform according to claim 1, is characterized in that, the active subscribing/notifying mode of described universal electric power metadata change events:
Step 1: introduce the event-based model in GUI programming, specify the subscriber of one or more module instance as data variation event in the mode that configures as metadata example;
Step 2: when occurring during data writing operation, first metadata example is event object by the data encapsulation of variation, then this event object active push (push) in each subscriber's event queue;
Step 3: task dispatcher starts an overall watcher thread and scans each subscriber's event queue, and notifies and trigger corresponding service logic as event subscription person's corresponding module example.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141452A (en) * | 2015-08-07 | 2015-12-09 | 北京思特奇信息技术股份有限公司 | High-performance service system and method based on CXF |
| CN105404556A (en) * | 2015-10-22 | 2016-03-16 | 江苏省电力公司扬州供电公司 | L-QT-P multi-thread event trigger mechanism based communication system and method |
| CN105490864A (en) * | 2014-09-16 | 2016-04-13 | 钛马信息网络技术有限公司 | Business module monitoring method based on OSGI |
| CN106656622A (en) * | 2016-12-29 | 2017-05-10 | 深圳Tcl新技术有限公司 | Method and device for configuring interface call tasks |
| CN108874567A (en) * | 2018-07-19 | 2018-11-23 | 广州市创乐信息技术有限公司 | A kind of service processing method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105490864A (en) * | 2014-09-16 | 2016-04-13 | 钛马信息网络技术有限公司 | Business module monitoring method based on OSGI |
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| CN105141452A (en) * | 2015-08-07 | 2015-12-09 | 北京思特奇信息技术股份有限公司 | High-performance service system and method based on CXF |
| CN105404556A (en) * | 2015-10-22 | 2016-03-16 | 江苏省电力公司扬州供电公司 | L-QT-P multi-thread event trigger mechanism based communication system and method |
| CN105404556B (en) * | 2015-10-22 | 2018-10-30 | 江苏省电力公司扬州供电公司 | Communication system and method based on L-QT-P multithreading event trigger mechanisms |
| CN106656622A (en) * | 2016-12-29 | 2017-05-10 | 深圳Tcl新技术有限公司 | Method and device for configuring interface call tasks |
| CN106656622B (en) * | 2016-12-29 | 2020-04-24 | 深圳Tcl新技术有限公司 | Method and device for configuring interface calling task |
| CN108874567A (en) * | 2018-07-19 | 2018-11-23 | 广州市创乐信息技术有限公司 | A kind of service processing method and system |
| CN108874567B (en) * | 2018-07-19 | 2021-08-17 | 广州市创乐信息技术有限公司 | Service processing method and system |
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