CN102508709B - Distributed-cache-based acquisition task scheduling method in purchase, supply and selling integrated electric energy acquiring and monitoring system - Google Patents
Distributed-cache-based acquisition task scheduling method in purchase, supply and selling integrated electric energy acquiring and monitoring system Download PDFInfo
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Abstract
The invention relates to a distributed-cache-based acquisition task scheduling method in a purchase, supply and selling integrated electric energy acquiring and monitoring system. The distributed-cache-based acquisition task scheduling method comprises the following steps of: creating acquisition tasks by a task manager according to a task template, storing the acquisition tasks in a task data area of a distributed cache, distributing tasks by the task manager in a balanced manner according to load situations of all acquisition nodes in a preposed acquisition cluster, enabling the acquisition nodes to get the tasks through a message bus, starting corresponding task executing flows and updating executing states of the tasks back to the distributed cache after completing the execution of the tasks. The distributed-cache-based acquisition task scheduling method disclosed by the invention has the benefits of well solving a task scheduling problem of bulk data, fundamentally solving the bottleneck problems of a great deal of types of data and large data quantity of the purchase, supply and selling integrated electric energy acquiring and monitoring system and realizing high-efficient, balanced and stable scheduling of the acquisition tasks.
Description
Technical field
The present invention relates to a kind of purchasing for selling the acquisition tasks dispatching method based on distributed caching in integrated generated energy acquisition and supervisory system, this method is also applicable to traditional generated energy acquisition and supervisory system.
Background technology
Traditional generated energy acquisition and supervisory system are all independent systems of disperseing, generally Dou Shi transformer station, power plant's critical point electric quantity acquisition one cover system, the collection of power consumer power information is again an other cover system, because data are disperseed, as long as adopt the general task scheduling based on gathering the capture program control between node just can meet the effect of task scheduling.
Novel purchasing for selling integrated generated energy acquisition and supervisory system will be included transformer station of power plant and power consumer in a platform collection, data type is many, data volume is large, from high pressure to low-voltage customer, from hundreds of thousands to up to a million, and even up to ten million, for the traditional task scheduling of the collection of these data no matter all can not meet the demand of system from real-time or data volume.
Task scheduling mode at present traditional generated energy acquisition and supervisory system is to adopt in collection cluster inside to carry out task scheduling by messaging bus mostly, first its step specifies certain to gather node as task scheduling main frame in collection cluster, generate task by this main frame and give other node allocating tasks by messaging bus, adopt in this way and inevitably there will be in the time that main frame exits cluster, whole collection cluster need to re-start computing and find out next main frame, the short interruption of the service of collection can be caused like this, and the phenomenons such as task loss can be caused; Another kind of more conventional method is to gather cluster to gather node load balancing by consistance HASH algorithm by every and take over a part of task, this method does not have the concept of dispatching host machine, every the collection node status gathering in cluster is impartial, the words that exit when any one node in cluster, can by consistent HASH algorithm the task on this platform again mean allocation to other nodes, but this is also to have gone for some time computing, this process also can cause the short interruption of the service of collection.
The shortcoming of above-mentioned prior art is as follows:
In some node state variation gathering in cluster, can cause a period of time to interrupt to gathering service, above task scheduling mode can cause part task to lose owing to gathering the frequent start-stop of the collection node in cluster; Tasks carrying is lacked to effective monitoring, failed tasks is not easy to reclaim, realize all shortcomings such as larger of the difficulty such as load balancing.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of purchasing for selling the acquisition tasks dispatching method based on distributed caching in integrated generated energy acquisition and supervisory system.
The technical solution adopted for the present invention to solve the technical problems:
Purchase for selling the acquisition tasks dispatching method based on distributed caching in integrated generated energy acquisition and supervisory system, it is characterized in that the acquisition tasks dispatching system that described method is made up of distributed caching, task manager, front-collection cluster and messaging bus completes; Concrete steps are as follows:
(1) generate acquisition tasks by described task manager according to task template, described acquisition tasks be put into the task data district of described distributed caching:
(1) by described acquisition tasks dispatching system, the task template in database is loaded into the task data district of described distributed caching, obtain task template by task manager from described task data district, and the state of task template is judged, filter out invalid and inactive task template;
(2) task template is increased or/and the amendment of deleting:
Task template is increased as required or/and the amendment of deleting is monitored the task template modifying by task manager, and obtain corresponding information by messaging bus;
(3) creation task thread pool:
By the content of analysis task template, the time that need to carry out according to task and cycle creation task thread pool, task manager is according to requiring task time attribute dynamically to generate acquisition tasks, and generated acquisition tasks is put into described mission thread pond, by task manager unified management;
Described acquisition tasks is made up of with mission bit stream body task ID number, a unique mission bit stream body of task ID correspondence;
(2) described acquisition tasks is dispatched by weight polling algorithm by task manager, acquisition tasks is distributed to each by messaging bus and gathers node, gather after node obtains acquisition tasks and carry out message assembling, issue and receive parse operation, acquisition tasks finishes rear renewal acquisition tasks state:
(1) described weight polling algorithm, according to the different disposal ability of each collection node, distributes different weights to each collection node, can receive the task requests of corresponding weight value number;
(2) on the acquisition tasks meeting mark distributing, gather the task ID number mark of node, the task of distributing is sent on messaging bus, in the task data district of distributed caching, record the state of this acquisition tasks, comprise executing state and the time of distributing to which collection node execution and acquisition tasks simultaneously;
(3) gather node obtain after task, according to the content of mission bit stream body carry out message assembling, issue and receive parse operation, then turn back to the task data district of distributed caching by messaging bus according to acquisition tasks execution result; Described acquisition tasks execution result comprises successfully, failed and overtime;
(3) task manager is processed accordingly to complete acquisition tasks:
Task manager is periodically monitored described task data district, and running succeeded of task is cleared up, and re-starts distribution to carrying out failed and overtime task; In the time that certain the collection node in front-collection cluster exits suddenly, task manager monitors the node working conditions change information that gathers, this is gathered to acquisition tasks and the unenforced acquisition tasks on node, carried out and reclaim, these acquisition tasks are re-assigned on other online collection nodes.
Described mission bit stream body comprises data item, the start and end time of collection and communication modes and the communications protocol gathering that acquisition tasks will gather or arrange.
Data in described task data district are stored in MAP mode.
Beneficial effect of the present invention is as follows:
The present invention utilizes distributed caching to carry out the scheduling of acquisition tasks, solve the task balance assignment problem of front-collection cluster, step back when gathering node throwing, described acquisition tasks dispatching system can keep normal operation, can there is not disruption, and can reclaim processing again to exiting carrying out on collection node of task.Can solve well the Mission Scheduling of huge data, fundamentally solved purchase for sell integrated some energy acquisition and supervisory system data type many, the bottleneck problem that data volume is large; Realize efficient, balanced, the stable scheduling of acquisition tasks.Can realize in province's compass of competency " all standing, entirely gather, control in full " of whole power consumers and all power purchase, power supply, sale of electricity, electric critical point and public automatic collection and the integrated application that becomes examination.
Brief description of the drawings
Fig. 1 is the process flow diagram of the inventive method.
Fig. 2 is the structural representation of acquisition tasks dispatching system.
Fig. 3 purchases for selling the hardware components schematic diagram arriving involved in the present invention in integrated generated energy acquisition and supervisory system.
Embodiment
Embodiment (referring to Fig. 1-3):
An acquisition tasks dispatching method based on distributed caching, is characterized in that the acquisition tasks dispatching system that described method is made up of distributed caching, task manager, front-collection cluster and messaging bus completes, and concrete steps are as follows:
(1) start;
(2) obtain task template:
Described acquisition tasks dispatching system first pre-loaded the task template in database in the task data district of distributed caching, obtain task template by task manager from the task data district of distributed caching, state to task template judges, filters out invalid, inactive acquisition tasks.
(3) additions and deletions of task template change notice:
Because task template need to often carry out manual amendment and increase, so task manager is responsible for the revised context of making to monitor, by the variable condition in task data district of monitoring distributed caching, get corresponding information by messaging bus;
(4) creation task thread pool:
Because task template is many, some acquisition tasks are also very high to requirement of real-time, so deposit by creating a mission thread pond acquisition tasks that needs generation, the time that need to carry out by the content aware acquisition tasks of analysis task template and all after dates, generate acquisition tasks and put into mission thread pond; By task manager unified management; The acquisition tasks of described generation is made up of with mission bit stream body task ID number, a unique mission bit stream body of task ID correspondence.
(5) judge whether acquisition terminal takies:
For acquisition terminal, synchronization can only have a tasks carrying, can not carry out multiple tasks simultaneously, so divide whether the state that timing need to judge acquisition terminal is seizure condition carrying out acquisition tasks;
(6) task is put into the mission thread pond of having distributed:
If acquisition terminal does not have occupied, namely in idle condition, task manager just calculates the loading condition of each collection node by weight polling algorithm, according to the principle of load balancing, acquisition tasks is assigned on different collection nodes;
(7) task is put into unappropriated mission thread pond:
If acquisition terminal is occupied, namely in busy state, just acquisition tasks is first put in the unappropriated mission thread of a task pond, detect acquisition terminal by task manager, wait the acquisition terminal free time to redistribute again later;
(8) multithread scheduling:
Because unallocated mission thread pond is larger, acquisition tasks dispatching system is carried out multithreading by mission thread pond dispatches simultaneously, raises the efficiency;
(9) generate task priority thread according to acquisition terminal:
In the situation that same acquisition terminal has multiple acquisition tasks, generate priority thread by the attribute of task, to priority, collection node is dispatched and is notified in high priority of task;
(10) gather node and obtain task:
Gather node and obtain task by messaging bus, according to the detailed content of task carry out message assembling, issue and parsing to message, carry out in-stockroom operation or notice foreground displayed page after obtaining data;
(11) gather the complete rear renewal task status of node:
Gather node according to the practice condition of task, obtain the execution result of task, according to task ID number, the execution result of task is directly upgraded to the task data district that returns to distributed caching simultaneously;
(12) finish.
In the present embodiment, described mission bit stream body comprises data item, the start and end time of collection and communication modes and the communications protocol gathering that acquisition tasks will gather or arrange.
Data in described task data district are stored in MAP mode.In Fig. 2, described acquisition tasks dispatching system comprises: distributed caching, task manager, front-collection cluster and message informing bus.
A, distributed caching are responsible for storing mission thread, realize front-collection cluster node with the access of client form, provide collection node to exit, add monitor service.
B, task manager are mainly realized the function such as removing and reallocation of task creation, task distribution and task.
C, front-collection cluster are the final executors of task, are responsible for execution and the Data Analysis of task, the state of final updated task.
D, messaging bus are mainly that distributing of task is sent to and gathered on node by messaging bus.
In Fig. 3, the related hardware of acquisition tasks dispatching system comprises client computer, WEB server, acquisition tasks caching server, acquisition tasks dispatch server and front-collection cluster.
User's specific operation process following (referring to Fig. 3):
That on the WEB page of user in client computer 13, initiates a collection of terminal calls survey acquisition tasks together, how to be assigned to and to gather being described as follows that node carries out and return:
(1), acquisition tasks scheduling process:
A, task generate:
User selects terminal and the data item that need to call survey together from the WEB page in client computer 13, on WEB node, generates acquisition tasks, acquisition tasks is put into the mission thread pond of the distributed caching of task caching server 15.
B, task scheduling:
Acquisition tasks dispatch server 16, according to each state and load condition that gathers node in front-collection cluster 17, is assigned to each by acquisition tasks and gathers on node.
C, collection node are executed the task:
Collection node is assembled message according to acquisition tasks imformosome content and is handed down to acquisition terminal, and the message that acquisition terminal is replied is resolved by gathering node, the result of tasks carrying is returned to WEB node, and remove corresponding task.
D, WEB server 14 show result:
WEB node obtains carrying out being presented on front page layout after correspondence according to task ID number after task result.
Claims (3)
1. purchase for selling the acquisition tasks dispatching method based on distributed caching in integrated generated energy acquisition and supervisory system, it is characterized in that the acquisition tasks dispatching system that described method is made up of distributed caching, task manager, front-collection cluster and messaging bus completes; Concrete steps are as follows:
(1) generate acquisition tasks by described task manager according to task template, described acquisition tasks be put into the task data district of described distributed caching:
(1) by described acquisition tasks dispatching system, the task template in database is loaded into the task data district of described distributed caching, obtain task template by task manager from described task data district, and the state of task template is judged, filter out invalid and inactive task template;
(2) task template is increased or/and the amendment of deleting:
Task template is increased as required or/and the amendment of deleting is monitored the task template modifying by task manager, and obtain corresponding information by messaging bus;
(3) creation task thread pool:
By the content of analysis task template, the time that need to carry out according to task and cycle creation task thread pool, task manager is according to requiring task time attribute dynamically to generate acquisition tasks, and generated acquisition tasks is put into described mission thread pond, by task manager unified management;
Described acquisition tasks is made up of with mission bit stream body task ID number, a unique mission bit stream body of task ID correspondence;
(2) described acquisition tasks is dispatched by weight polling algorithm by task manager, acquisition tasks is distributed to each by messaging bus and gathers node, gather after node obtains acquisition tasks and carry out message assembling, issue and receive parse operation, acquisition tasks finishes rear renewal acquisition tasks state:
(1) described weight polling algorithm, according to the different disposal ability of each collection node, distributes different weights to each collection node, can receive the task requests of corresponding weight value number;
(2) on the acquisition tasks meeting mark distributing, gather the task ID number mark of node, the task of distributing is sent on messaging bus, in the task data district of distributed caching, record the state of this acquisition tasks, comprise executing state and the time of distributing to which collection node execution and acquisition tasks simultaneously;
(3) gather node obtain after task, according to the content of mission bit stream body carry out message assembling, issue and receive parse operation, then turn back to the task data district of distributed caching by messaging bus according to acquisition tasks execution result; Described acquisition tasks execution result comprises successfully, failed and overtime;
(3) task manager is processed accordingly to complete acquisition tasks:
Task manager is periodically monitored described task data district, and running succeeded of task is cleared up, and re-starts distribution to carrying out failed and overtime task; In the time that certain the collection node in front-collection cluster exits suddenly, task manager monitors the node working conditions change information that gathers, this is gathered to acquisition tasks and the unenforced acquisition tasks on node, carried out and reclaim, these acquisition tasks are re-assigned on other online collection nodes.
2. according to claim 1 purchasing for selling the acquisition tasks dispatching method based on distributed caching in integrated generated energy acquisition and supervisory system, is characterized in that data item, the start and end time of collection and communication modes and the communications protocol of collection that described mission bit stream body comprises acquisition tasks and will gather or arrange.
3. according to claim 2 purchasing for selling the acquisition tasks dispatching method based on distributed caching in integrated generated energy acquisition and supervisory system, is characterized in that the data in described task data district are stored in MAP mode.
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| CN106408486A (en) * | 2016-09-30 | 2017-02-15 | 深圳市华傲数据技术有限公司 | Data collection method and system for grid management |
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| CN101262367A (en) * | 2008-03-07 | 2008-09-10 | 中兴通讯股份有限公司 | Collection method and device for performance data |
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| CN102158346A (en) * | 2010-11-23 | 2011-08-17 | 北京神州泰岳软件股份有限公司 | Information acquisition system and method based on cloud computing |
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