CN107491700B - Data access method and equipment - Google Patents

Data access method and equipment Download PDF

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Publication number
CN107491700B
CN107491700B CN201710546939.1A CN201710546939A CN107491700B CN 107491700 B CN107491700 B CN 107491700B CN 201710546939 A CN201710546939 A CN 201710546939A CN 107491700 B CN107491700 B CN 107491700B
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database
sql
access
data
parameters
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CN107491700A (en
Inventor
殷舒
刘胜
吴锋海
陈正
祝晓潭
廖校均
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Union Mobile Pay Co ltd
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Union Mobile Pay Co ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60Protecting data
    • G06F21/62Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6218Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
    • G06F21/6227Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database where protection concerns the structure of data, e.g. records, types, queries
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/44Distributed routing

Abstract

The invention discloses a data access method and equipment, wherein the method comprises the following steps: obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database; determining at least one database table needing to be accessed according to the fragment field and the sqlid, wherein the at least one database table belongs to a class of databases; and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result. Therefore, the technical problem that the data structure is easy to leak when the data is accessed in the prior art can be effectively solved, and the method has the beneficial effect of protecting the data structure.

Description

Data access method and equipment
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a data access method and device.
Background
With the development of internet services, the traffic volume of trading systems has increased exponentially. Meanwhile, the internet service often carries out sales promotion activities, which can lead to the rapid increase of the transaction amount in a certain time period and the occurrence of transaction peak. Transaction systems currently rely on databases as a means of data persistence, and database operations can become a bottleneck in the event of a transaction peak.
Therefore, the scheme of the distributed database is commonly used by internet companies, and a table of the database is horizontally split into a plurality of tables of a plurality of databases, so as to reduce the processing load of each fragment table and improve the access efficiency of the database as a whole, which requires that fragment routing rules are formulated to realize data access under a distributed architecture.
The existing data fragmentation routing scheme is mainly a mode of using a routing table, a structured routing table storage structure is difficult to meet complex routing rule setting, a routing configuration data cannot obtain a routing result, a plurality of rule data need to be obtained for secondary operation, and information of tables and fields in a database can also appear in an access request message, so that the risk that data structure information is easy to expose exists
Therefore, the prior art has the technical problem that the data structure is easy to leak when the data is accessed.
Disclosure of Invention
The embodiment of the invention provides a data access method and equipment, which are used for solving the technical problem that a data structure is easy to leak when data are accessed in the prior art.
The embodiment of the invention provides the following specific technical scheme:
obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database;
determining at least one database table needing to be accessed according to the fragment field and the sqlid, wherein the at least one database table belongs to a class of databases;
and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
Optionally, when the sql is mapped to sql statements of the same type of database, the sql statements and the sql statements are in a one-to-one correspondence relationship.
Optionally, the sql statement corresponding to the sql is a single table operation for the database or a multi-table association operation for the database.
Optionally, the number of bytes of the sqlid is less than or equal to 10 bytes.
Optionally, the determining, according to the fragment field and the sql, at least one database table that needs to be accessed specifically includes:
inputting the fragment field and the sqlid as parameters into a preset third-party program for routing calculation to obtain a routing result;
and determining at least one database table needing to be accessed according to the routing result.
Optionally, the routing result further includes a database address and a physical table name of the at least one database table, and the at least one database table is accessed after combining statement parameters in the data request parameters and sql statements corresponding to the sql, so as to obtain an access result, specifically:
and combining the statement parameters, the sql statements, the database addresses and the physical table names, and then accessing the at least one database table to obtain an access result.
In a second aspect, an embodiment of the present invention provides a data access device, including:
an access control module: the method comprises the steps of obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database;
a fragment routing module: the system comprises a data processing unit, a fragment field generation unit, a sqlid generation unit and a database management unit, wherein the data processing unit is used for determining at least one database table needing to be accessed according to the fragment field and the sqlid, and the at least one database table belongs to a class of database;
the access control module is further configured to: and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
Optionally, when the sql is mapped to sql statements of the same type of database, the sql statements and the sql statements are in a one-to-one correspondence relationship.
Optionally, the fragment routing module is specifically configured to:
inputting the fragment field and the sqlid as parameters into a preset third-party program for routing calculation to obtain a routing result;
and determining at least one database table needing to be accessed according to the routing result.
Optionally, the routing result further includes a database address and a physical table name of the at least one database table, and the access control module is specifically configured to:
and combining the statement parameters, the sql statements, the database addresses and the physical table names, and then accessing the at least one database table to obtain an access result.
Based on the technical scheme, the embodiment of the invention adopts the method of obtaining the database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps the sql statements of the same type of database; determining at least one database table needing to be accessed according to the fragment field and the sqlid, wherein the at least one database table belongs to a class of databases; the statement parameters in the data request parameters and the sql statements corresponding to the sql statements are combined and then the at least one database table is accessed to obtain an access result, that is, in the embodiment of the present invention, the sql statements are used for the request parameters for data access, and the sql statements correspond to the sql statements of the same type of database, so that the information of tables and fields in the database does not appear in the request packet like the existing data fragment routing scheme, the risk of exposing the data structure information is reduced, and the size of the request data packet is reduced, thereby effectively solving the technical problem that the data structure is easy to leak when accessing data in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a flowchart of a data access method according to an embodiment of the present invention;
fig. 2 is a flowchart of a specific implementation manner of step S102 in the data access method according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a data access device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another data access device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the technical solutions of the present invention. All other embodiments obtained by a person skilled in the art without any creative effort based on the embodiments described in the present document belong to the protection scope of the technical solution of the present invention.
In the embodiment of the present invention, as shown in fig. 1, the data access process is as follows:
step S101: obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database;
step S102: determining at least one database table needing to be accessed according to the fragment field and the sqlid, wherein the at least one database table belongs to a class of databases;
step S103: and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
In a specific implementation process, the database access subsystem first executes the step S101, that is, obtains a database access request, where the database access request includes an sql, a fragmentation field, and a data request parameter, and the sql maps sql statements of the same type of database.
In practical applications, when a database access is required, the database access subsystem receives a database access request sent by an application system, where the database access request includes an sql, a fragmentation field, and a data request parameter.
In the embodiment of the present invention, the sql statement that the sql maps to the same type of database is defined, and the sql corresponds to the sql statement of the type of database in a one-to-one correspondence, that is, each sql corresponds to one sql statement, and meanwhile, the number of bytes of the sql does not exceed 10 bytes, for example, the number of bytes of the sql may be selected to be 10 bytes, or the number of bytes of the sql may be selected to be 5 bytes, and in the embodiment of the present invention, the number of bytes of the sql is specifically taken as 8 bytes.
Of course, in a specific implementation process, the sql statement corresponding to the sql statement may be selectively set as a single table operation for the same type of database or as a multi-table association operation for the same type of database. For example, when an sql statement corresponding to an sql is selected as a multi-table association operation for databases of the same type, then, an association operation may be performed on multiple tables of one or more databases in the databases of the same type through the sql statement corresponding to the sql statement, where it is assumed that an sql statement corresponding to the sql is selected for an a table and a B table with the same ID number in one database, then, an sql statement corresponding to the sql may be:
select*from table A,table B where A.id=B.id
in this embodiment, an sql statement corresponding to the sql is specifically taken as an example for operating on a data table in one database.
In practical applications, after the database access subsystem receives the database access request, the database access subsystem will execute step S102: and determining at least one database table needing to be accessed according to the fragment field and the sqlid, wherein the at least one database table belongs to a class of databases.
Referring to fig. 2, in practical applications, the step S102 may also be implemented as follows:
step S1021: inputting the fragment field and the sqlid as parameters into a preset third-party program for routing calculation to obtain a routing result;
step S1022: and determining at least one database table needing to be accessed according to the routing result.
Specifically, the database access subsystem determines the sqlid, the fragment field and the data request parameter contained in the database access request according to the received database access request, then, the database access subsystem will call a third-party program, and then the fragment field and the sql id are used as parameters to be input into the third-party program for route calculation, in practical application, the third-party program can be the method, the processing logic of the scripting method is implemented by writing a scripting language, and is executed in a scripting engine of a high-level language, such as a mode of executing the JavaScript language in a java running environment, the execution efficiency of the JavaScript language is equivalent to the local binary code efficiency, the script upgrading is easier to be carried out, and because the script language is completely pictographic, the method can realize the logic processing of various routing rules of the database, and has wider support for the fragment routing.
In this embodiment, specifically, taking a third-party program as an example of a script method, the fragment field and the sqlid are input as parameters into a program corresponding to the script method for performing routing computation, where it is assumed that a routing result includes at least one database table, and then the database access subsystem may determine that the at least one database table needs to be accessed from the routing result.
After the database access subsystem determines that the database to be accessed is at least one database table, the method in this embodiment performs step S103: and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
In a specific practical process, after the database access subsystem determines that a database to be accessed is at least one database table, the database access subsystem combines statement parameters in a data request and sql statements corresponding to sql statements, the combination is used as parameters for accessing the at least one database table, then the combined parameters are input into the at least one database table for data access, an access result is obtained, and then the access result is output to the database system.
In practical applications, in step S102, if the fragment field and the logical table name are input as parameters into a program corresponding to the script method for performing routing calculation, and the obtained routing result includes, in addition to at least one database table that needs to be accessed, a database address and a physical table name of at least one database table, then step S103 may be further performed as follows:
and combining the statement parameters, the sql statements, the database addresses and the physical table names, and then accessing the at least one database table to obtain an access result.
That is, the routing result further includes a database address and a physical table name of at least one database table, the database access subsystem combines the database address of at least one database table, the physical table name of at least one database table, the statement parameter in the data request, and the sql statement corresponding to the sql statement in the routing result, and the combination is used as a parameter for accessing at least one database table, and then the parameters after the combination are input into at least one database table for data access, so as to obtain an access result, and then the access result is output to the database system.
Therefore, by the method, the request parameter of the data access uses the sql statement instead of the sql statement, and the sql corresponds to the sql execution statement of the database, so that information of tables and fields in the database does not appear in a message of the data access request, the risk of exposing data structure information is reduced, and the size of the request data message is reduced.
In addition, because the sql language corresponding to the sql language in the embodiment of the present invention may be two-table or multi-table related operations for one or more databases, fragment routing of the database multi-table related data operations is achieved, complex multi-table related data operations in a data fragment scenario may be supported, and since the traditional database performs authority control for tables and operation types, the embodiment of the present invention performs data access in the form of sql language, and may perform authority control for each sql statement operation, the authority control strength is finer than that of the traditional database.
In addition, parameters in the database access request use the sql statements and directly use the sql statements, and the sql statements use no more than 10 bytes and are far lower than the network flow required when the sql statements are used as the parameters, so the flow of the network request is also saved. The embodiment of the invention uses the script method as a third-party program, the script language is executed in the running environment of the high-level language, and the calculation efficiency of the fragment routing is higher, so that the efficiency of fragment data access is further improved.
Based on the same inventive concept, embodiments of the present invention provide a data access device, and specific implementation of data access of the device may refer to the description of the method embodiment, and repeated details are not described again, as shown in fig. 3, the device mainly includes:
the access control module 11: the method comprises the steps of obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database;
fragment routing module 12: the system comprises a data processing unit, a fragment field generation unit, a sqlid generation unit and a database management unit, wherein the data processing unit is used for determining at least one database table needing to be accessed according to the fragment field and the sqlid, and the at least one database table belongs to a class of database;
the access control module 11 is further configured to: and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
Optionally, when the sql is mapped to sql statements of the same type of database, the sql statements and the sql statements are in a one-to-one correspondence relationship.
Optionally, the sql statement corresponding to the sql is a single table operation for the database or a multi-table association operation for the database.
Optionally, the number of bytes of the sqlid is less than or equal to 10 bytes.
Optionally, the fragment routing module is specifically configured to:
inputting the fragment field and the logic table name as parameters into a preset third-party program for routing calculation to obtain a routing result;
and determining at least one database table needing to be accessed according to the routing result.
Optionally, the routing result further includes a database address and a physical table name of the at least one database table, and the access control module 11 is specifically configured to:
and combining the statement parameters, the sql statements, the database addresses and the physical table names, and then accessing the at least one database table to obtain an access result.
In addition, in the device in the embodiment of the invention, the database access is uniformly managed, and all sql statements are centrally managed in the access control module, so that the unified management of database administrators is facilitated, the database access is optimized, the routing rules are easy to modify and expand, the routing rules are independent of the deployment of the data access module, and the whole module of the data access is not required to be upgraded after the routing rules are modified.
Based on the same inventive concept, an embodiment of the present invention provides a data access device, where specific implementation of data access of the device may refer to description of the method embodiment, and repeated parts are not described again, as shown in fig. 4, the device mainly includes a processor 21 and a memory 22, where the memory 22 stores a preset program, and the processor 21 reads the program in the memory 22, and executes the following processes according to the program:
obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database;
determining at least one database table needing to be accessed according to the fragment field and the sqlid, wherein the at least one database table belongs to a class of databases;
and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
Optionally, when the sql is mapped to an sql statement of a database, the sql and the sql statement are in a one-to-one correspondence relationship.
Optionally, the sql statement corresponding to the sql is a single table operation for the database or a multi-table association operation for the database.
Optionally, the number of bytes of the sqlid is less than or equal to 10 bytes.
Optionally, the determining that at least one database table needs to be accessed according to the fragment field and the logical table name specifically includes:
inputting the fragment field and the logic table name as parameters into a preset third-party program for routing calculation to obtain a routing result;
and determining at least one database table needing to be accessed according to the routing result.
Optionally, the routing result further includes a database address and a physical table name of at least one database table, and the at least one database table is accessed after combining statement parameters in the data request parameters and sql statements corresponding to the sql, so as to obtain an access result, where:
and combining the statement parameters, the sql statements, the database addresses and the physical table names, and then accessing the at least one database table to obtain an access result.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (6)

1. A method of data access, comprising:
obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database; when the sql is mapped to the sql sentences of the same type of database, the sql sentences and the sql sentences are in one-to-one correspondence;
inputting the fragment field and the sqlid as parameters into a preset third-party program for routing calculation to obtain a routing result;
determining at least one database table needing to be accessed according to the routing result, wherein the at least one database table belongs to a class of databases;
and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
2. The method of claim 1, wherein the sql statement to which the sql corresponds is a single table operation for a database or a multi-table association operation for a database.
3. The method of claim 2, wherein the sqlid has a byte count of 10 bytes or less.
4. The method as claimed in claim 1, wherein the routing result further includes a database address and a physical table name of the at least one database table, and the accessing of the at least one database table after combining the statement parameter in the data request parameter with the sql statement corresponding to the sql id to obtain an access result specifically includes:
and combining the statement parameters, the sql statements, the database addresses and the physical table names, and then accessing the at least one database table to obtain an access result.
5. A data access device, comprising:
an access control module: the method comprises the steps of obtaining a database access request, wherein the database access request comprises an sql, a fragment field and a data request parameter, and the sql maps sql statements of the same type of database; when the sql is mapped to the sql sentences of the same type of database, the sql sentences and the sql sentences are in one-to-one correspondence;
a fragment routing module: the system comprises a fragmentation field, a sqlid and a router, wherein the fragmentation field and the sqlid are used as parameters to be input into a preset third-party program for routing calculation to obtain a routing result;
determining at least one database table needing to be accessed according to the routing result, wherein the at least one database table belongs to a class of databases;
the access control module is further configured to: and combining statement parameters in the data request parameters with the sql statements corresponding to the sql statements, and then accessing the at least one database table to obtain an access result.
6. The device according to claim 5, wherein the routing result further includes a database address and a physical table name of the at least one database table, and the access control module is specifically configured to:
and combining the statement parameters, the sql statements, the database addresses and the physical table names, and then accessing the at least one database table to obtain an access result.
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