CN104778197A - Data searching method and device - Google Patents
Data searching method and device Download PDFInfo
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- CN104778197A CN104778197A CN201410843148.1A CN201410843148A CN104778197A CN 104778197 A CN104778197 A CN 104778197A CN 201410843148 A CN201410843148 A CN 201410843148A CN 104778197 A CN104778197 A CN 104778197A
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Abstract
The invention discloses a data searching method and a data searching device, wherein the method comprises the following steps: obtaining a search data packet; pre-searching the search data packet according to a pre-searching keyword to obtain a pre-searching data packet; sending the pre-searching data packet to an external searching device for searching. The method and the device provided by the embodiment of the invention can be used for pre-searching the search data packet by a programmable logic device and undertaking a part of search affairs of the external searching device; on the basis that hardware of the original external searching device does not need to be modified, the bandwidth and the efficiency of data query are improved, and the property of searching the keyword is promoted.
Description
Technical field
The present invention relates to Data Analysis field, particularly relate to a kind of data search method and device.
Background technology
Along with developing rapidly of internet industry, the data analysis requirements based on all trades and professions gets more and more, and performance network packet being obtained to analytic product is more and more harsher, and the index request for resolution system is also more and more higher.And the corn module of this type systematic is exactly keyword search.
The lookup method of packet key word in prior art, if mainly searched by external searching equipment.Fig. 1 is the logical organization schematic diagram of the data enquire method that prior art provides, as shown in Figure 1, data source flows through programmable logic device (PLD), programmable logic device (PLD) is resolved data source, and the data after resolving are sent to external searching equipment, the key word in data is searched by external searching equipment.
Above-mentioned data search method has the following disadvantages: the data bandwidth of external searching equipment is limited, once the queries of packet exceedes the bandwidth traffic of query facility, just need to change the fixed function chip in external inquiry equipment or direct replacing external inquiry equipment, this all needs to change hardware and design, substantially increase the cost of data query, this scheme is not suitable for system upgrade and maintenance; Generally, the inquiry bandwidth of external unit is larger, and the cost of the query facility of use is higher, and performance and the cost of key word of the inquiry are directly proportional, and wants the bandwidth improving data query, just must increase the input of external unit cost.
Summary of the invention
The present invention completes to solve above-mentioned deficiency of the prior art, and the object of the invention is to propose a kind of data search method and device, the method and device improve the efficiency of data query, reduce the cost of data query.
For reaching this object, the present invention by the following technical solutions:
First aspect, embodiments provides a kind of data search method, comprising:
Packet is searched in acquisition;
Described packet of searching is searched in advance according to pre-search key, searches packet in advance to obtain;
Described Packet Generation of searching in advance is searched to external searching equipment.
Further, described described packet of searching to be searched in advance according to pre-search key, searches packet in advance specifically comprise to obtain:
Initialization is carried out to pre-search key bit wide and pre-search key content;
Pre-search key bit wide after initialization and the pre-search key content after initialization are configured;
According to the pre-search key content after the pre-search key bit wide after configuration and configuration, described packet of searching is searched in advance, search packet in advance to obtain.
Further, describedly according to the pre-search key content after the pre-search key bit wide after configuration and configuration, described packet of searching to be searched in advance, searches packet in advance specifically comprise to obtain:
According to the pre-search key bit wide after described configuration, described packet of searching is split at least one height and searches packet;
Packet is searched to described son and carries out Hash operation, to obtain the address ram corresponding with it;
Search packet according to described address ram to described son to search, if the content that son described at least one searches packet is consistent with the pre-search key content after described configuration, then described packet of searching is defined as searching packet in advance.
Further, describedly according to described address ram, packet is searched to described son and search and searched by dual port RAM.
Further, according to described address ram, packet is searched to described son and search, if to search the pre-search key content after the content of packet and described configuration inconsistent for described son, then described packet of searching is deleted.
On the other hand, the invention provides and embodiment still provides a kind of data search device, comprising:
Acquisition module, searches packet for obtaining;
Searching module in advance, for searching in advance according to pre-search key described packet of searching, searching packet in advance to obtain;
Search module, for being searched to external searching equipment by described Packet Generation of searching in advance.
Further, described module of searching in advance comprises:
Initialization unit, for carrying out initialization to pre-search key bit wide and pre-search key content;
Dispensing unit, for being configured the pre-search key bit wide after initialization and the pre-search key content after initialization;
Searching unit in advance, for searching in advance described packet of searching according to the pre-search key content after the pre-search key bit wide after configuration and configuration, searching packet in advance to obtain.
Further, described unit of searching in advance specifically comprises:
Split subelement, for described packet of searching being split at least one height and searches packet according to the pre-search key bit wide after configuration;
Operator unit, carries out Hash operation for searching packet to described son, to obtain the address ram corresponding with it;
Determine subelement, search for searching packet according to described address ram to described son, if the content that son described at least one searches packet is consistent with the pre-search key content after described configuration, then described packet of searching is defined as searching packet in advance.
Further, describedly according to described address ram, packet is searched to described son and search and searched by dual port RAM.
Further, describedly determine that subelement comprises further:
Deleting except subelement, searching for searching packet according to described address ram to described son, if the pre-search key content after the described son content of searching packet and described configuration is inconsistent, then search packet deletion by described.
The embodiment of the present invention is searched packet to be found in advance by programmable logic device (PLD), first initialization is carried out to pre-search key bit wide and pre-search key content, then dynamic-configuration is carried out to described pre-search key bit wide and pre-search key content, finally according to the pre-search key bit wide after dynamic-configuration and pre-search key content, packet to be found is searched in advance, packet is searched in advance to obtain, search searching Packet Generation in advance further in external searching equipment, affairs are searched by the part having shared outside equipment of searching of searching in advance of programmable logic device (PLD), do not needing to change on the basis of original external searching device hardware, improve the bandwidth sum efficiency of data query, improve the performance of key word of the inquiry.
Accompanying drawing explanation
In order to the technical scheme of exemplary embodiment of the present is clearly described, one is done to the accompanying drawing used required for describing in embodiment below and simply introduce.Obviously, the accompanying drawing introduced is the accompanying drawing of a part of embodiment that the present invention will describe, instead of whole accompanying drawings, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the logical organization schematic diagram of the data enquire method that prior art provides.
Fig. 2 is the schematic flow sheet of the data search method that the embodiment of the present invention one provides.
Fig. 3 is the schematic flow sheet of the data search method that the embodiment of the present invention two provides.
Fig. 4 is the packet input timing schematic diagram of the data search method that the embodiment of the present invention two provides.
Fig. 5 is the operation logic schematic diagram of the data search method that the embodiment of the present invention two provides.
Fig. 6 is the logical organization schematic diagram of the data search device that the embodiment of the present invention three provides.
Fig. 7 is the structural representation of the data search device that the embodiment of the present invention three provides.
Fig. 8 is the structural representation of the data search device that the embodiment of the present invention four provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below with reference to the accompanying drawing in the embodiment of the present invention, by embodiment, technical scheme of the present invention is intactly described.Obviously; described embodiment is a part of embodiment of the present invention, instead of whole embodiments, based on embodiments of the invention; the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all falls within protection scope of the present invention.
Embodiment one:
Fig. 2 gives the schematic flow sheet of the data search method that the embodiment of the present invention one provides.The method of the present embodiment can be performed by data search device, and this device realizes by the mode of hardware and/or software, and general accessible site is in programmable logic device (PLD).
As shown in Figure 2, the data search method that the present embodiment one provides comprises following operation:
S110, obtains and searches packet;
The present embodiment will search packet input by the input interface of programmable logic device (PLD), and programmable logic device (PLD) is resolved described packet of searching.
S120, searches in advance according to pre-search key described packet of searching, searches packet in advance to obtain;
After getting parsing search packet after, by described search Packet Generation to external searching equipment before, searching in advance searching packet according to pre-search key, searching packet in advance to obtain.In a concrete example, the key word searched is needed to be that the data of 8 bytes are as " abcd1234567 ... ", pre-search key can be set as " abcd ", the packet of searching of input is searched in advance, find out comprise " abcd " search packet, and packet will be searched be defined as searching packet in advance.It should be noted that, pre-search key width can weigh specifically using and remaining logical resource of programmable logic device (PLD), and the quantity of searching packet sets.
S130, searches described Packet Generation of searching in advance to external searching equipment.
By S120 by searching after packet searches in advance and determine and search packet in advance, described Packet Generation of searching in advance is searched further to external searching equipment.Wherein, described external searching equipment can be three-state content addressing memory (ternary content addressable memory, TCAM), internal memory, system interface.
The present embodiment is by searching in advance searching packet in the programmable logic device, the part having shared external searching equipment searches affairs, the band inputting packet can be made to be wider than the ultimate value that peripheral hardware searches bandwidth, when not changing hardware design, improve the inquiry bandwidth of data searching system, also reduce the cost of data query simultaneously.
Embodiment two:
Fig. 3 gives the schematic flow sheet of the data search method that the embodiment of the present invention two provides.The method of the present embodiment can be performed by data search device, and this device realizes by the mode of hardware and/or software, and general accessible site is in programmable logic device (PLD).The present embodiment, based on embodiment one, is optimized S120.
As shown in Figure 3, the data search method that the present embodiment two provides comprises following operation:
S210, obtains and searches packet;
In this operation, by the input interface of programmable logic device (PLD), packet to be found is inputted, and input according to continuous print complete data packet.Fig. 4 gives the packet input timing schematic diagram of the data search method that the present embodiment two provides.As shown in Figure 4, clk is clock signal, and valid is data valid signal, and sop is data input commencing signal, and eop is data end of input signal, and Data is the data message of input, and mty is the identification information of data significant bit.Packet in the present embodiment inputs according to the data layout shown in Fig. 4, no matter is therefore which kind of data layout before packet input, can be converted to this corresponding data layout and inputs, improve scope and the extensibility of data search.
S220, carries out initialization to pre-search key bit wide and pre-search key content;
In this operation, the bit wide of pre-search key and the width of pre-search key, such as, pre-search key is 2 bytes, then the bit wide of this key word is 16.
S230, is configured the pre-search key bit wide after initialization and the pre-search key content after initialization;
Concrete, the content of the pre-search key after the bit wide of the pre-search key after dynamic-configuration initialization and initialization is carried out according to the available resources of programmable logic device (PLD) and the packet of searching packet, by the register of the external control interface configure reserved of programmable logic device (PLD), the configuration to pre-service key word bit wide can be realized; After the configuration completing pre-search key bit wide, pre-service key word content is configured, by connecting the external control interface of programmable logic device (PLD), dynamic-configuration can be carried out to the pre-search key content after initialization, such as, the initial pre-search key content of packet is " 0xAAAA ", is changed to " 0xBBBB ".
S240, splits at least one height according to the pre-search key bit wide after described configuration search packet by described packet of searching;
This operation, splits at least one son identical with pre-search key bit wide search packet by described packet of searching.
S250, searches packet to described son and carries out Hash operation, to obtain the address ram corresponding with it;
This operation is searched packet to the son splitting acquisition and is carried out Hash operation, described son is searched packet and is converted to corresponding address ram, search so that follow-up.
S260, searches packet according to described address ram to described son and searches, if the content that son described at least one searches packet is consistent with the pre-search key content after described configuration, is then defined as searching packet in advance by described packet of searching;
Concrete, carry out after Hash operation obtains its corresponding address ram when described son to be searched packet by S250, address ram is read by dual port RAM, and this son is searched the content of packet and pre-search key content compares, if it is identical with pre-search key content to have at least a son to search the content of packet, then this is searched packet and is confirmed as searching packet in advance, follow-uply transfers to external searching equipment further search searching data in advance.
In addition, the present embodiment also comprises, and searches packet search according to described address ram to described son, if to search the pre-search key content after the content of packet and described configuration inconsistent for described son, is then deleted by described packet of searching.
S270, searches described Packet Generation of searching in advance to external searching equipment.
Fig. 5 gives the operation logic schematic diagram of the data search method that the present embodiment provides.As shown in Figure 5, first the data enquire method that the present embodiment provides carries out initial configuration to the bit wide of pre-service key word and the content of pre-service key word, wherein, the configuration of pre-service key word bit wide is realized reserved register configuration by the control interface of programmable logic device (PLD), the configuration of pre-service key word content is by realizing to programmable logic device (PLD) write pre-service key word content, pre-service key word content is carried out Hash operation, obtain corresponding pre-search key address ram, as number in the figure 1. shown in, described pre-search key address ram is written as 1, then the packet of input is split at least one height according to pre-service key word bit wide and search packet, packet is searched to described at least one height and carries out Hash operation respectively, packet address ram is searched to obtain corresponding son, as number in the figure 2. shown in, dual port RAM reads described son and searches packet address ram, and described son is searched the content of packet and pre-search key content compares, as number in the figure 3. shown in, if the content that described son searches packet is identical with pre-search key content, then the Output rusults of this dual port RAM is 1, otherwise be 0, and Output rusults is input to pre-lookup result judge module, as number in the figure 4. shown in, the Output rusults at least one height being searched to dual port RAM corresponding to packet judges, if have at least an Output rusults to be 1, then this is searched packet to be defined as searching packet in advance, and transfer to external searching equipment search searching packet in advance further, if all lookup results are all 0, then illustrate that this is searched packet and does not hit, this is searched packet to delete.
The data search method that the present embodiment provides is searched packet to be found in advance by programmable logic device (PLD), first initialization is carried out to pre-search key bit wide and pre-search key content, then dynamic-configuration is carried out to described pre-search key bit wide and pre-search key content, finally according to the pre-search key bit wide after dynamic-configuration and pre-search key content, packet to be found is searched in advance, packet is searched in advance to obtain, search searching Packet Generation in advance further in external searching equipment, affairs are searched by the part having shared outside equipment of searching of searching in advance of programmable logic device (PLD), do not needing to change on the basis of original external searching device hardware, improve the bandwidth sum efficiency of data query, improve the performance of key word of the inquiry.
Embodiment three:
Fig. 6 gives the logical organization schematic diagram of the data search device that the embodiment of the present invention three provides.As shown in Figure 6, the data search device that the embodiment of the present invention provides is integrated in programmable logic device (PLD), to searching packet after Data Analysis, according to data search device, the packet of searching after being namely is searched in advance, search packet in advance to obtain, and search searching Packet Generation in advance further to external searching equipment.
Fig. 7 gives the structural representation of the data search device that the embodiment of the present invention three provides.As shown in Figure 7, the data search device that the present embodiment provides comprises following structure:
Acquisition module 101, searches packet for obtaining;
Searching module 102 in advance, for searching in advance according to pre-search key described packet of searching, searching packet in advance to obtain;
Search module 103, for being searched to external searching equipment by described Packet Generation of searching in advance.
The treating apparatus of a kind of operation/maintenance data that the embodiment of the present invention provides can perform a kind of data search method that the embodiment of the present invention one provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
Embodiment four:
Fig. 8 gives the structural representation of the data search device that the embodiment of the present invention four provides.The present embodiment, based on embodiment three, is optimized searching module in advance, and as shown in Figure 8, the data search device that the present embodiment provides comprises following structure:
Acquisition module 201, searches packet for obtaining;
Searching module 202 in advance, for searching in advance according to pre-search key described packet of searching, searching packet in advance to obtain;
Search module 203, for being searched to external searching equipment by described Packet Generation of searching in advance.
Further, search module 202 in advance to comprise:
Initialization unit 2021, for carrying out initialization to pre-search key bit wide and pre-search key content;
Dispensing unit 2022, for being configured the pre-search key bit wide after initialization and the pre-search key content after initialization;
Searching unit 2023 in advance, for searching in advance described packet of searching according to the pre-search key content after the pre-search key bit wide after configuration and configuration, searching packet in advance to obtain.
Further, search unit 2023 in advance to comprise:
Split subelement 20231, for described packet of searching being split at least one height and searches packet according to the pre-search key bit wide after configuration;
Operator unit 20232, carries out Hash operation for searching packet to described son, to obtain the address ram corresponding with it;
Determine subelement 20233, search for searching packet according to described address ram to described son, if the content that son described at least one searches packet is consistent with the pre-search key content after described configuration, then described packet of searching is defined as searching packet in advance.
Further, describedly according to described address ram, packet is searched to described son and search and searched by dual port RAM.
Further, describedly determine that subelement 20233 comprises further:
Deleting except subelement, searching for searching packet according to described address ram to described son, if the pre-search key content after the described son content of searching packet and described configuration is inconsistent, then search packet deletion by described.
A kind of data search device that the embodiment of the present invention provides can perform a kind of data search method that the embodiment of the present invention two provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
The know-why that above are only preferred embodiment of the present invention and use.The invention is not restricted to specific embodiment described here, the various significant changes can carried out for a person skilled in the art, readjust and substitute all can not depart from protection scope of the present invention.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by the scope of claim.
Claims (10)
1. a data search method, is characterized in that, comprising:
Packet is searched in acquisition;
Described packet of searching is searched in advance according to pre-search key, searches packet in advance to obtain;
Described Packet Generation of searching in advance is searched to external searching equipment.
2. data search method according to claim 1, is characterized in that, describedly searches in advance according to pre-search key described packet of searching, and searches packet in advance specifically comprise to obtain:
Initialization is carried out to pre-search key bit wide and pre-search key content;
Pre-search key bit wide after initialization and the pre-search key content after initialization are configured;
According to the pre-search key content after the pre-search key bit wide after configuration and configuration, described packet of searching is searched in advance, search packet in advance to obtain.
3. data search method according to claim 2, is characterized in that, describedly searches in advance described packet of searching according to the pre-search key content after the pre-search key bit wide after configuration and configuration, searches packet in advance specifically comprise to obtain:
According to the pre-search key bit wide after described configuration, described packet of searching is split at least one height and searches packet;
Packet is searched to described son and carries out Hash operation, to obtain the address ram corresponding with it;
Search packet according to described address ram to described son to search, if the content that son described at least one searches packet is consistent with the pre-search key content after described configuration, then described packet of searching is defined as searching packet in advance.
4. data search method according to claim 3, is characterized in that, describedly searches packet according to described address ram to described son and searches and searched by dual port RAM.
5. data search method according to claim 3, it is characterized in that, search packet according to described address ram to described son to search, if to search the pre-search key content after the content of packet and described configuration inconsistent for described son, then described packet of searching is deleted.
6. a data search device, is characterized in that, comprising:
Acquisition module, searches packet for obtaining;
Searching module in advance, for searching in advance according to pre-search key described packet of searching, searching packet in advance to obtain;
Search module, for being searched to external searching equipment by described Packet Generation of searching in advance.
7. data search device according to claim 6, is characterized in that, described module of searching in advance comprises:
Initialization unit, for carrying out initialization to pre-search key bit wide and pre-search key content;
Dispensing unit, for being configured the pre-search key bit wide after initialization and the pre-search key content after initialization;
Searching unit in advance, for searching in advance described packet of searching according to the pre-search key content after the pre-search key bit wide after configuration and configuration, searching packet in advance to obtain.
8. data search device according to claim 7, is characterized in that, described unit of searching in advance specifically comprises:
Split subelement, for described packet of searching being split at least one height and searches packet according to the pre-search key bit wide after configuration;
Operator unit, carries out Hash operation for searching packet to described son, to obtain the address ram corresponding with it;
Determine subelement, search for searching packet according to described address ram to described son, if the content that son described at least one searches packet is consistent with the pre-search key content after described configuration, then described packet of searching is defined as searching packet in advance.
9. data search device according to claim 8, is characterized in that, describedly searches packet according to described address ram to described son and searches and searched by dual port RAM.
10. data search device according to claim 8, is characterized in that, describedly determines that subelement comprises further:
Deleting except subelement, searching for searching packet according to described address ram to described son, if the pre-search key content after the described son content of searching packet and described configuration is inconsistent, then search packet deletion by described.
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