CN112511659A - Method and system for acquiring terminal attribute by constructing hash chain table - Google Patents

Method and system for acquiring terminal attribute by constructing hash chain table Download PDF

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Publication number
CN112511659A
CN112511659A CN202011205171.XA CN202011205171A CN112511659A CN 112511659 A CN112511659 A CN 112511659A CN 202011205171 A CN202011205171 A CN 202011205171A CN 112511659 A CN112511659 A CN 112511659A
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hash
module
node
chain table
local side
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CN112511659B (en
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曹宇凯
林艳
许锡顺
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Jinqianmao Technology Co ltd
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Jinqianmao Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4552—Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5053—Lease time; Renewal aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer And Data Communications (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

The invention relates to the technical field of communication, in particular to a method and a system for acquiring terminal attributes by constructing a hash chain table. The method comprises the following steps: the server side inquires a preset hash chain table according to the obtained MAC address of the first local side module, wherein the hash chain table stores a hash node associated with the MAC address, and the hash node comprises the local side module and terminal module attribute information connected with the local side module; if a first hash node associated with the MAC address of the first local side module exists in the hash nodes of the hash chain table, acquiring the first hash node, and analyzing to obtain a first local side module corresponding to the first hash node and terminal module attribute information connected with the first local side module. By setting the hash chain table, the hash nodes associated with the MAC addresses are stored in the hash chain table, batch acquisition can be supported, millisecond-level quick query service is provided, and the experience of users is greatly improved.

Description

Method and system for acquiring terminal attribute by constructing hash chain table
The application is a divisional application of a parent application, namely a patent application with the application date of 2017.02.15, the application number of 201710080404.X and the name of 'a method and a system for acquiring terminal attributes'.
Technical Field
The invention relates to the technical field of communication, in particular to a method and a system for acquiring terminal attributes by constructing a hash chain table.
Background
With the vigorous promotion of the country on the integration and bidirectional transformation of the three networks, the network architecture of pon (passive Optical network) + eoc (ethernet Over coax) is more and more widely applied under the drive of the user's demand for multimedia integrated services such as voice, data, video, etc. The EOC network at the user side mainly comprises local side equipment and terminal equipment, and the local side equipment establishes EOC network communication with an EOC module in the terminal equipment through the EOC module based on an EOC technical protocol stack so as to achieve the purpose of transmitting Ethernet data on a coaxial cable. Each local side equipment can support a plurality of EOC modules, which are generally divided into single-mode, double-mode and four-mode local sides, and each local side EOC module can be connected with 64 terminal equipment at most.
In the application scenario of a multi-module office terminal batch, it is a huge time-consuming project that a user queries configuration information of all terminal devices in real time, the configuration information of each terminal device needs to be queried in real time by taking the office terminal device as an intermediate agent, and each terminal query needs about 2 seconds in actual measurement each time. Therefore, it is imperative to provide a reasonable and simple method for realizing rapid attribute acquisition of terminals in batches in a multi-module office.
In the prior art, a method for rapidly acquiring attributes of terminals in batches under a multi-module office mainly includes the following steps:
1. through single-thread query, a database caching mode specifically comprises the following steps: the user triggers the inquiry request, the local side equipment searches the local side equipment in a single-thread mode, simultaneously, the configuration information of each module of the local side equipment and all the terminal equipment connected below the module are sequentially obtained together and stored in the database, and the user inquires the configuration information from the database. The biggest defect of the technical scheme is that under the condition that the number of terminal devices is large, the time for searching the devices during first query is long, and the user experience is poor. Meanwhile, the database needs to be globally searched again and updated when a new terminal is online. In addition, the introduction of databases increases system complexity and development management costs.
2. Through multithread inquiry, the database caching mode specifically is:
compared with the scheme, the technical scheme introduces the multithreading technology, searches for the local side equipment, simultaneously inquires and creates a new thread according to the configuration information of each local side module and the downlink terminal equipment thereof, and executes the operation of the scheme in the new thread. The technical scheme can improve the overall query efficiency, but has corresponding defects: firstly, the introduction of multiple threads increases the lock management difficulty caused by the load of the system and the mutual exclusion between the threads; secondly, switching and scheduling among threads are difficult to ensure that a new terminal is on line and can be timely retrieved and updated into a database in real time, so that a user can read complete terminal attribute information only by refreshing for many times.
3. As shown in fig. 1, the EOC network management system based on the simple network management protocol adopts the following solutions: when a new terminal device accesses the EOC network, the new terminal device sends a basic information broadcast packet based on a simple network management protocol to a local side device, after the local side device receives the broadcast packet, the basic information of the new terminal device is stored in a local side storage module, a network topological graph generating module generates a new terminal topological graph, and the new terminal topological graph is displayed through a display module. The technical scheme can well solve the problem of rescanning introduced by online of a new terminal and shorten the reading time of the configuration information of the terminal equipment in the EOC network. However, the biggest disadvantage of the technical scheme is that the software architecture of the existing terminal needs to be modified, the complexity of the system structure is increased, and the compatibility of the system is greatly reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a method and a system for rapidly acquiring terminal attributes are provided.
In order to solve the technical problems, the invention adopts the technical scheme that:
a method for acquiring terminal attributes by constructing a hash chain table comprises the following steps:
step 1, a server side inquires a preset hash chain table according to an acquired MAC address of a first local side module, wherein the hash chain table stores a hash node associated with the MAC address, and the hash node comprises the local side module and terminal module attribute information connected with the local side module;
and 2, if a first hash node associated with the MAC address of the first local side module exists in the hash nodes of the hash chain table, acquiring the first hash node, and analyzing to obtain a first local side module corresponding to the first hash node and terminal module attribute information connected with the first local side module.
The invention adopts another technical scheme that: a system for obtaining terminal attributes by constructing a hash chain table comprises: an acquisition module and an analysis module;
the acquisition module is used for the server side to inquire a preset hash chain table according to the acquired MAC address of the first local side module, wherein the hash chain table stores a hash node associated with the MAC address, and the hash node comprises the local side module and terminal module attribute information connected with the local side module;
the analysis module is used for acquiring the first hash node if the first hash node associated with the MAC address of the first local side module exists in the hash nodes of the hash chain table, and analyzing to obtain the first local side module corresponding to the first hash node and the attribute information of the terminal module connected with the first local side module.
The invention has the beneficial effects that: the method and the system for acquiring the terminal attribute by constructing the hash chain table are different from the prior art, the hash chain table is arranged, the hash chain table stores hash nodes associated with MAC addresses, the hash nodes comprise local side modules and terminal module attribute information connected with the local side modules, and batch acquisition can be supported by judging whether the hash chain table has nodes corresponding to the MAC addresses of the local side modules.
Drawings
FIG. 1 is a block diagram of a simple network management protocol-based EOC network management system according to the background art of the present invention;
FIG. 2 is a flowchart illustrating steps of a method for obtaining a terminal attribute by constructing a hash chain table according to the present invention;
FIG. 3 is a schematic structural diagram of a system for acquiring a terminal attribute by constructing a hash chain table according to the present invention;
fig. 4 is a flowchart of a method for acquiring a terminal attribute according to a first embodiment of the present invention;
fig. 5 is a hash chain table diagram of a method for acquiring a terminal attribute according to a first embodiment of the present invention;
FIG. 6 is a block diagram of an EOC network management system of the present invention;
description of reference numerals:
1. an acquisition module; 2. and an analysis module.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: by setting the hash chain table, the hash nodes associated with the MAC addresses are stored in the hash chain table, batch acquisition can be supported, millisecond-level quick query service is provided, and the experience of users is greatly improved.
Referring to fig. 2, a method for obtaining a terminal attribute by constructing a hash chain table provided by the present invention includes:
step 1, a server side inquires a preset hash chain table according to an acquired MAC address of a first local side module, wherein the hash chain table stores a hash node associated with the MAC address, and the hash node comprises the local side module and terminal module attribute information connected with the local side module;
and 2, if a first hash node associated with the MAC address of the first local side module exists in the hash nodes of the hash chain table, acquiring the first hash node, and analyzing to obtain a first local side module corresponding to the first hash node and terminal module attribute information connected with the first local side module.
From the above description, the beneficial effects of the present invention are: different from the prior art, the method for acquiring the terminal attribute by constructing the hash chain table provided by the invention has the remarkable characteristics that millisecond-level quick query service is provided, and the experience of a user is greatly improved. The system does not adopt a multi-module and multi-thread management mechanism, and the problem of lock management difficulty caused by mutual exclusion between system load and threads is solved. Meanwhile, the terminal software architecture does not need to be changed, the local side manages the system in a unified mode, the system is simple in structure and high in compatibility, and the flexibility and the competitiveness of the product are improved.
Further, step 1 is preceded by:
step 0, presetting a hash chain table, and specifically comprising the following steps:
step 00, the server side judges whether an inquiry request sent by the client side is received, if so, the attribute information of the local side module and the terminal module connected with the local side module is obtained, and the MAC address of the local side module is recorded;
step 01, calculating according to the MAC address of the local side module to obtain a hash value of a hash node in a hash chain table;
step 02, inquiring the hash chain table according to the hash value in the step 01, judging whether the hash chain table has a hash node which is the same as the hash value, if not, the hash node corresponding to the MAC address of the local side module is a new node, recording the acquisition time of the new node, inserting the new node into the hash chain table, and updating the node information of the hash chain table to a cache file.
According to the above description, the system adopts a local cache mechanism, and does not need to provide additional database support, thereby reducing the complexity of system design and the development management cost.
Further, the step 02 further includes: and judging whether the node is overtime or not according to the acquisition time of each node, and if so, deleting the overtime node.
According to the description, each node sets an effective time limit, and if the node is overtime, the node is deleted, so that the data volume can be effectively optimized, and convenience is brought to quick query. And carrying out overtime judgment on the hash node corresponding to each local side module under each request of the client, if the node is overtime, triggering to inquire the terminal module information under the local side module in real time, without carrying out global real-time inquiry, greatly shortening the inquiry time, and reconstructing the inquiry result into the hash node and storing the hash node into a cache file. The condition updating of the hash chain table is mainly triggered when a new terminal is on line, the reconstruction of the hash node corresponding to the local side module where the terminal is located is triggered, and the construction flow is consistent with the timing updating.
Further, the update period of the hash chain table is 5 minutes.
Referring to fig. 3, a system for obtaining a terminal attribute by constructing a hash chain table according to a further embodiment of the present invention includes: an acquisition module 1 and an analysis module 2;
the acquiring module 1 is configured to query, by a server, a preset hash chain table according to an acquired MAC address of a first local side module, where a hash node associated with the MAC address is stored in the hash chain table, and the hash node includes a local side module and attribute information of a terminal module connected to the local side module;
the analysis module 2 is configured to, if a first hash node associated with the MAC address of the first local-side module exists in the hash nodes of the hash chain table, acquire the first hash node, and analyze the first hash node to obtain the first local-side module corresponding to the first hash node and the attribute information of the terminal module connected to the first local-side module.
From the above description, the beneficial effects of the present invention are: different from the prior art, the system for acquiring the terminal attribute by constructing the hash chain table provided by the invention has the remarkable characteristics that millisecond-level quick query service is provided, and the experience of a user is greatly improved by setting the hash chain table, wherein the hash chain table stores hash nodes associated with MAC addresses, the hash nodes comprise local side modules and terminal module attribute information connected with the local side modules, and whether the hash chain table has nodes corresponding to the MAC addresses of the local side modules or not is judged. The system does not adopt a multi-module and multi-thread management mechanism, and the problem of lock management difficulty caused by mutual exclusion between system load and threads is solved. Meanwhile, the terminal software architecture does not need to be changed, the local side manages the system in a unified mode, the system is simple in structure and high in compatibility, and the flexibility and the competitiveness of the product are improved.
Furthermore, the device also comprises a preset module; the preset module comprises a judging unit, a calculating unit and an updating unit;
the judging unit is used for judging whether the server side receives the query request sent by the client side, if so, acquiring the attribute information of the local side module and the terminal module connected with the local side module, and recording the MAC address of the local side module;
the computing unit is used for computing a hash value of a hash node in a hash chain table according to the MAC address of the local side module;
and the updating unit is used for inquiring the hash chain table according to the hash value, judging whether the hash chain table has a hash node which is the same as the hash value, if not, the hash node corresponding to the MAC address of the local side module is a new node, recording the acquisition time of the new node, inserting the new node into the hash chain table, and updating the node information of the hash chain table to the cache file.
According to the above description, the system adopts a local cache mechanism, and does not need to provide additional database support, thereby reducing the complexity of system design and the development management cost.
Further, the preset module further comprises a deleting unit, which is used for judging whether the node is overtime according to the acquisition time of each node, and if yes, deleting the overtime node.
Further, the update period of the hash chain table is 5 minutes.
According to the description, each node sets an effective time limit, and if the node is overtime, the node is deleted, so that the data volume can be effectively optimized, and convenience is brought to quick query. And carrying out overtime judgment on the hash node corresponding to each local side module under each request of the client, if the node is overtime, triggering to inquire the terminal module information under the local side module in real time, without carrying out global real-time inquiry, greatly shortening the inquiry time, and reconstructing the inquiry result into the hash node and storing the hash node into a cache file. The condition updating of the hash chain table is mainly triggered when a new terminal is on line, the reconstruction of the hash node corresponding to the local side module where the terminal is located is triggered, and the construction flow is consistent with the timing updating.
The first embodiment of the invention is as follows:
referring to fig. 6, the main structure of the system for acquiring a terminal attribute by constructing a hash chain table according to the present invention is as follows:
the local side equipment mainly comprises a module management client process, a module management server process and an EOC module, and is connected with the EOC terminal equipment through EOC network management.
The module management client process establishes socket communication with the module management server process, runs along with the system startup on one hand, and carries out EOC module information query in advance at the background; on the other hand, when a user initiates a module information query request of a local side and a downlink terminal thereof, equipment attribute information is quickly acquired from the cache file, and a result is presented to the user.
And the module management server process starts along with the system and runs in a daemon process mode, receives an EOC module information query request from the module management client process, constructs a hash chain table of module attribute information of the local side and the downlink terminal thereof, and stores the attribute information in the hash chain table into a cache file for quick query.
And the EOC network is composed of the local EOC module and the terminal EOC module connected with the local EOC module through a coaxial cable.
Referring to fig. 4, a method for obtaining a terminal attribute by constructing a hash chain table according to the present invention includes:
201: the module management server process starts along with the system and runs in a daemon process mode;
202: creating a socket service among system processes, starting port monitoring and receiving a query request of a module management client process;
203: the protocol stack based on the EOC technology, such as: the method comprises the steps that a HomePlugAV protocol stack constructs a two-layer message with the Ethernet type of 0x88E1, establishes a network channel for interacting with a local end EOC module, and acquires module attribute information through an MME message format;
204: waiting for a module attribute information query request of the module management client process in a blocking mode;
205: judging whether a query request of the module management client process exists, if so, entering the step 206, otherwise, continuing to execute the step 204;
206: scanning basic information of the local side module and recording a Mac address corresponding to the local side module;
207: inquiring a hash chain table according to the MAC address of the local side, judging whether the hash chain table is a new hash node, if so, entering the step 208, otherwise, entering the step 211;
208: acquiring attribute information of a local side module and terminal modules connected below the local side module, and storing the attribute information in a hash node mode;
209: recording the current acquisition time of attribute information of a local side and a downlink terminal module thereof, taking the current acquisition time as the creation time of a hash node, storing the creation time into the hash node, and simultaneously inserting the node into a hash chain table;
210: traversing the hash node information according to the latest information of the hash chain table, updating the hash node information to a cache file, and then continuing to execute the step 204;
211: judging whether the hash node record is overtime according to the acquisition time of the hash node, wherein the overtime is 5 minutes, if so, entering the step 212, otherwise, entering the step 213;
212: deleting the overtime hash node corresponding to the local side module, and continuing to execute the step 208 to the step 210. When the new terminal is on-line, the step is executed as well, and the step is used as a condition for re-scanning attribute information of the corresponding terminal module under the local side module;
213: if the hash node is not overtime, the hash node information does not need to be updated to the cache file, and then the step 204 is continuously executed;
referring to fig. 5, the hash chain table diagram has the following main structure:
in the module management server process, the lower two bytes of the Mac address of the local side module are used as keywords, a hash function is used for calculating a hash value and constructing a zipper type hash chain table, and the formula of the hash function is as follows: (hmac 5 + (hmac 4 + 256))% HASHTABLE _ LEN, where hmac is an array of local side module Mac addresses; hash _ LEN is the size of the hash linked list, and the value is 280;
each hash chain table node consists of module attribute information, hash node creation time and a pointer pointing to the next hash node. The module attribute information is a linked list formed by the attribute information of the local side module and the downlink terminal module thereof; the hash node creation time is used for judging whether the hash node is overtime.
In summary, the method and system for acquiring the terminal attribute by constructing the hash chain table provided by the present invention are characterized in that the hash chain table is provided, the hash chain table stores hash nodes associated with MAC addresses, the hash nodes include local modules and terminal module attribute information connected thereto, and the hash chain table is judged whether nodes corresponding to the MAC addresses of the local modules exist, so that batch acquisition can be supported. The system does not adopt a multi-module and multi-thread management mechanism, and the problem of lock management difficulty caused by mutual exclusion between system load and threads is solved. Meanwhile, the terminal software architecture does not need to be changed, the local side manages the system in a unified mode, the system is simple in structure and high in compatibility, and the flexibility and the competitiveness of the product are improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (8)

1. A method for obtaining terminal attributes by constructing a hash chain table is characterized by comprising the following steps:
step 1, presetting a hash chain table, and specifically comprising the following steps:
step 11, the server side judges whether an inquiry request sent by the client side is received, if so, the attribute information of the local side module and the terminal module connected with the local side module is obtained, and the MAC address of the local side module is recorded;
step 12, calculating according to the MAC address of the local side module to obtain the hash value of the hash node in the hash chain table;
step 13, inquiring the hash chain table according to the hash value in the step 12, judging whether the hash chain table has a hash node which is the same as the hash value, if not, taking the hash node corresponding to the MAC address of the local side module as a new node, recording the acquisition time of the new node, inserting the new node into the hash chain table, and updating the node information of the hash chain table to a cache file;
the hash chain table is a zipper type hash chain table, and the zipper type hash chain table is constructed by calculating a hash value through a hash function;
the formula of the hash function is: (hmac 5 + (hmac 4 + 256))% HASHTABLE _ LEN, where hmac is the array of MAC addresses of the local side modules; hash _ LEN is the size of the hash chain table, and the value is 280;
each hash node in the hash chain table consists of module attribute information, hash node creation time and a pointer pointing to the next hash node; the module attribute information is a linked list formed by the attribute information of the local side module and the downlink terminal module thereof; the hash node creation time is used for judging whether the hash node is overtime or not;
and 2, the server side inquires the preset hash chain table according to the acquired MAC address of the first local side module, if a first hash node associated with the MAC address of the first local side module exists in the hash nodes of the hash chain table, the first hash node is acquired, and the attribute information of the first local side module corresponding to the first hash node and the terminal module connected with the first local side module is obtained through analysis.
2. The method for obtaining the terminal attribute by constructing the hash chain table as claimed in claim 1, wherein the step 12 further comprises: and judging whether the node is overtime or not according to the acquisition time of each node, and if so, deleting the overtime node.
3. The method for acquiring the terminal attribute by constructing the hash chain table according to claim 1, wherein the step 11 specifically comprises:
waiting for a module attribute information query request of a module management client process in a blocking mode;
and judging whether the module manages the inquiry request of the client process, if so, scanning the basic information of the local side module and recording the MAC address corresponding to the local side module.
4. The method for obtaining the terminal attribute by constructing the hash chain table as claimed in claim 3, further comprising: and establishing a socket service among system processes, starting port monitoring and receiving a query request of the module management client process.
5. A system for acquiring terminal attributes by constructing a hash chain table is characterized by comprising a preset module and an acquisition module; the preset module comprises a judging unit, a calculating unit and an updating unit;
the judging unit is used for judging whether the server side receives the query request sent by the client side, if so, acquiring the attribute information of the local side module and the terminal module connected with the local side module, and recording the MAC address of the local side module;
the computing unit is used for computing a hash value of a hash node in a hash chain table according to the MAC address of the local side module;
the updating unit is used for inquiring the hash chain table according to the hash value, judging whether the hash chain table has a hash node which is the same as the hash value, if not, the hash node corresponding to the MAC address of the local side module is a new node, recording the acquisition time of the new node, inserting the new node into the hash chain table, and updating the node information of the hash chain table to a cache file;
the hash chain table is a zipper type hash chain table, and the zipper type hash chain table is constructed by calculating a hash value through a hash function;
the formula of the hash function is: (hmac 5 + (hmac 4 + 256))% HASHTABLE _ LEN, where hmac is the array of MAC addresses of the local side modules; hash _ LEN is the size of the hash chain table, and the value is 280;
each hash node in the hash chain table consists of module attribute information, hash node creation time and a pointer pointing to the next hash node; the module attribute information is a linked list formed by the attribute information of the local side module and the downlink terminal module thereof; the hash node creation time is used for judging whether the hash node is overtime or not;
the acquisition module is used for inquiring the preset hash chain table according to the acquired MAC address of the first local side module, acquiring a first hash node if the first hash node associated with the MAC address of the first local side module exists in the hash nodes of the hash chain table, and analyzing to obtain the attribute information of the first local side module corresponding to the first hash node and the terminal module connected with the first local side module.
6. The system for acquiring the terminal attribute by constructing the hash chain table as claimed in claim 5, wherein the preset module further comprises a deleting unit for judging whether the node is overtime according to the acquisition time of each node, and if so, deleting the overtime node.
7. The system for acquiring the terminal attribute by constructing the hash chain table according to claim 5, wherein the judging unit waits for the module attribute information query request of the module management client process in a blocking manner;
and judging whether the module manages the inquiry request of the client process, if so, scanning the basic information of the local side module and recording the MAC address corresponding to the local side module.
8. The system for acquiring the terminal attribute by constructing the hash chain table as claimed in claim 5, further comprising a creating module for creating a socket service between system processes and opening port monitoring for receiving a query request of the module management client process.
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