CN106529331A - Multi-tenant data isolation scheme applied to PaaS (Platform-as-a-Service) platform - Google Patents
Multi-tenant data isolation scheme applied to PaaS (Platform-as-a-Service) platform Download PDFInfo
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- CN106529331A CN106529331A CN201610928587.1A CN201610928587A CN106529331A CN 106529331 A CN106529331 A CN 106529331A CN 201610928587 A CN201610928587 A CN 201610928587A CN 106529331 A CN106529331 A CN 106529331A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting 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
Abstract
The invention discloses a multi-tenant data isolation scheme applied to a PaaS (Platform-as-a-Service) platform. According to the multi-tenant data isolation scheme, database configuration of a heterogeneous system is registered in a configuration file Datasource.xml; a hybrid data isolation mode is employed; moreover, data isolation of a toB level and a toC level is compatible; according to the configuration file Datasource.xml, database configuration information of the heterogeneous system is appointed; mapping information based on orientation to one or more source databases and multi-tenant metadata are provided; carried own tenant ids are established for the tenants when different systems log in a current cloud application system. According to the technical scheme, demands of the two fields of toB and toC are compatible, and scalability, expansibility and shareability are integrated.
Description
Technical field
The invention belongs to computer software field of cloud calculation, more particularly to a kind of multi-tenant data for being applied to PaaS platform
Isolation scheme.
Background technology
With development and the maturation of Intel Virtualization Technology of cloud computing technology, PaaS（That is Platform-as-a-Service's
Abbreviation, means that platform is serviced）Already become the focus of cloud computing application, traditional software application business constantly makes the transition to high in the clouds,
Server platform or development environment are supplied to into user as service, are responsible for and are safeguarded by provider resource effectively to subtract
The cost of few SaaS applications.
Multi-tenant architecture is a kind of most important model in PaaS platform, and the practical application for PaaS platform is provided and had by force
Power is supported.Multi-tenant architecture, while framework aspect ensure that and run single application example on a server, is multiple
Tenant provides service, effectively reduces the cost of PaaS applications.At the same time, also access for multi-tenant architecture application layer data and control
System and data isolation provide more challenges.
Microsoft points out that current multi-tenant architecture is mainly shown as three kinds of forms in data plane for 2006 on MSDN：1.
2. shared data bank of self contained data base, independent Schema3. shared data banks, shared Schema, shared data table.Independent data
Storehouse refers to a tenant and exclusively enjoys a database instance, and physics is invisible each other for tenant data, and backup and recovery are all very flexible；
Each tenant is associated with the different Schema of same data base for shared data bank, independent Schema, and between tenant, data are each other
Logic is invisible, and the realization of upper level applications is simple as self contained data base, but Backup and Restore slightly shows complexity；It is last a kind of
Pattern is then that tenant data realizes shared in tables of data rank, and it provides minimum cost, but it is multiple to introduce extra programming
Polygamy（The data access of program needs with tenantId to distinguish different tenants）, back up and recover also more complicated.Current market
On manufacturer provide multi-tenant support, be on the whole all to follow this several quasi-mode mentioned above, or be mixed with several plans
Slightly.
Accordingly, it would be desirable to a kind of new communication encryption technology is avoiding the generation of drawbacks described above.
The content of the invention
For the deficiencies in the prior art, the present invention provides a kind of multi-tenant data isolation scheme for being applied to PaaS platform,
From the practical application of cloud product, for applying real demand, there is provided while towards toB（Towards enterprise）And toC（Towards
It is personal）Blended data isolation scheme, based on the understanding to Spring frameworks, realize one using the mode towards tangent plane programming
The solution route for being dynamically determined data source is planted, requirement of the multi-tenant architecture to data access control is met, is realized client couple
The demand of resource elastic telescopic, filled up the subdivision field one are blank.
A kind of multi-tenant data isolation scheme for being applied to PaaS platform, the multi-tenant data isolation scheme is by isomery system
Data base's configuration of system is registered in configuration file Datasource.xml, employs blended data isolation method while compatibility
The data isolation of toB ranks and toC ranks, the configuration file Datasource.xml specify the data base of the heterogeneous system
Configuration information, there is provided based on the map information and multi-tenant metadata that point to one or more source databases, is each rent
Carrying itself the tenant id when different system logs in current cloud application system that family creates.
Preferably, the configuration file Datasource.xml is covered and is integrated system database configuration information, including
It is integrated system unique identifier, database-driven class, data base's connection string and data base administration industry information.
Preferably, the data isolation of the toB ranks is comprised the following steps：
S1, carries tenant id and sends data operation request；
S2, system is according to tenant id from reading database link information in preset configuration file；
S3, it is right hereof that the data source in current container is set to the tenant by the dynamic data source mechanism based on spring frameworks
The data source answered；
S4, the operation requests can carry out associative operation to corresponding data base.
Preferably, the data isolation of the toC ranks is comprised the following steps：
S1, increases TenantId fields in using corresponding database table；
S2, when personal user initiates to ask, takes out the corresponding tenant id of current personal user from log-on message；
S3, when data base is manipulated, carries tenant's information, completes the establishment of corresponding CRUD relations based on tenant's information；
S4, with tenant's information realization in data base service data information isolation.
Preferably, the dynamic data source mechanism based on spring frameworks includes procedure below：
The AbstractRoutingDataSource Similar integrals of the Spring have rewritten base from AbstractDataSource
In the method that data source obtains connection, determineCurrentLookupKey methods are externally exposed, it is true by concrete implementation
Surely obtain the strategy of data source.SetTargetDataSources methods are exposed externally simultaneously, its subclass can be according to reality
Need to complete the initial work of data source；
Acquiescence reads all data source informations for being registered in current system from configuration file, then rewrites
SetTargetDataSources methods, complete the initial work of data source；
A class for obtaining and context environmental being set is set up, is responsible for changing the title in context data source；
The tenant Id of current system is read, the corresponding truthful data source name of current tenant is returned according to tenant's information；
The dynamic data source is set in the data source of Spring and realizes class.
Technical scheme has the advantages that：
A kind of multi-tenant data isolation scheme for being applied to PaaS platform that the present invention is provided is a kind of hybrid-type data base every
After scheme, login, based on context environment is dynamically determined the new model of data source, and its technical scheme being capable of compatibility toB, toC
The demand in two kinds of fields, realizes the fusion of retractility, autgmentability and sharing, has been successfully applied to a new generation of UFSOFT PaaS
Platform product-cloud list, realizes towards enterprise and the integration towards personal user, enriches product dimension, solves many rents
Requirement of the family framework to data access control, realizes demand of the client to resource elastic telescopic, has filled up the subdivision field
One blank.
Description of the drawings
Below by drawings and Examples, technical scheme is described in further detail.
Fig. 1 is a kind of toB end datas source configuration side of the multi-tenant data isolation scheme for being applied to PaaS platform of the present invention
Formula figure；
Fig. 2 is that C-terminal is realized by tenant id in a kind of toC ends of the multi-tenant data isolation scheme for being applied to PaaS platform of the present invention
Tenant's isolation figure.
Specific embodiment
In order to have a clear understanding of technical scheme, its detailed structure will be set forth in the description that follows.Obviously, originally
Simultaneously deficiency is limited to the specific details is familiar with by those skilled in the art for the concrete execution of inventive embodiments.The preferred reality of the present invention
Apply example to be described in detail as follows, except these for describing in detail implement exception, there can also be other embodiment.
With reference to the accompanying drawings and examples the present invention is described in further details.
Embodiments provide a kind of multi-tenant data isolation scheme for being applied to PaaS platform, the multi-tenant number
Data base's configuration of heterogeneous system is registered in configuration file Datasource.xml according to isolation scheme, employs blended data
The simultaneously compatible data isolation of toB ranks and toC ranks of isolation method, the configuration file Datasource.xml are specified
The database configuration information of the heterogeneous system, there is provided based on the map information for pointing to one or more source databases and many rents
Family metadata, be each tenant create when different system logs in current cloud application system, itself tenant id can be carried.
The embodiment of the present invention according to product towards domain of definition, from actual demand, employ blended data isolation side
Case, while the compatibility data isolation of toB ranks and toC ranks, the program can be met to tenant's isolation, data safety
Property, the composite request of data source configurability.
In multi-tenant architecture, in the data isolation of toB ranks, we have selected multiple tenants to share same application journey
The form of sequence example.Hardware cost can be so shared, development and maintenance cost is reduced.Different isomerization system, due to safety
Property, the comprehensive consideration of data isolation degree, will certainly there are the scenes of different data bases using different connection strings.
The present invention is registered in data base's configuration of heterogeneous system in configuration file Datasource.xml, and this document is specified
The database configuration information of the heterogeneous system, also just physically provides a kind of logical view, there is provided based on pointing to one
The map information and multi-tenant metadata in individual or multiple source datas storehouse.For each tenant's establishment when different system is logged in currently
During cloud application system, itself tenant id can be carried.
Datasource.xml is the key that this programme realizes data source extensibility, it mainly cover be integrated be
System database configuration information, mainly includes：It is integrated system unique identifier, database-driven class, data base's connection string, data base
Management industry information etc., by the mark, can uniquely determine the data source information of the system of being integrated.Cutting by the configuration file
Cut, the data source information for being integrated system becomes with atomicity, configurable part, and the data source between different tenants is tenant
Isolation, data source extensibility becomes the prerequisite that program run mode is uniquely searched according to tenant id and determines data source.
The logic for finding and being dynamically determined data source covers from tenant the overall process for signing in the operation of authentic data storehouse, real
The mapping relations from tenant id to tenant data source are showed.With reference to Fig. 1, the realization of toB rank data isolation schemes：Step one,
Carry tenant id and send data operation request；Step 2, system connect from reading database in preset configuration file according to tenant id
Connect information；Data source in current container is set to the tenant and is existed by step 3, the dynamic data source mechanism based on spring frameworks
Corresponding data source in file；Step 4, the operation requests can carry out associative operation to corresponding data base.
Using the form preset data source information of configuration file, and it is corresponding with tenant id to preserve different data source informations
Relation, actually realizes different database access strategies using strategy pattern, shields different numbers by configuration file
According to the connection string information characteristics in storehouse.In the PaaS platform for supporting multi-tenant, each application will be with above-mentioned one or more
The multiple source datas storehouse of the tenant data that physical data is shared or storage/isolation mode is organized, so as to meet each source data
The various demands of the tenant data operation in storehouse.
The realization of toC rank data isolation schemes：In actual applications, personal user also occupies important in this cloud product
, there are extensive multi-tenant application scenarios in this application, have on the Data Physical of great quantity of small tenant the identical source that is distributed in ground
In data base, the present invention completes the isolation to toC class subscribers database accesss simultaneously, in same data base scheme
Same table has carried out field isolation
The present invention completes the design to the isolation of toC end datas：
Increase TenantId fields in using corresponding database table；When personal user initiates to ask, from log-on message
Take out the corresponding tenant id of current personal user；When data base is manipulated, tenant's information is carried, is completed based on tenant's information
The establishment of corresponding CRUD relations；With tenant's information realization in data base service data information isolation；
This programme realizes that in the form of TenantId tenant isolates, that is, employs the Multi-Tenant patterns of classics, many
Individual tenant shares an example, is separated with the TenantId fields of same table before different tenants.When the real business of execution
During logical operation, tenant's information is inquired from contextual information, data screening and filtration are carried out as a querying condition part.
By service end screening washer, contribute to reducing throughput of system, with the continuous expansion of data volume, it is possible to use the tenantid
A point table handling is carried out, the cutting of data is realized, data volume pressure is reduced, is lifted data-handling capacity.
The existing isolation of data of tenant has shared again, provides identical data base for different tenants, contributes to simplifying number
Design according to the extension of model, realize the lifting of database efficiency.
Dynamic data source mechanism based on spring frameworks：Spring is control reversion (IoC) dough-making powder of a lightweight
To the container frame of tangent plane (AOP), Spring promotes loose coupling by a kind of technology of referred to as control reversion.Spring is simultaneously
There is provided the abundant support towards tangent plane programming, it is allowed to carry out cohesion with system-level service by the service logic for separating application
Exploitation.
AbstractRoutingDataSource is introduced in Spring 2.0.1, such act as DataSource's
Route intermediary, can operationally, according to certain key value come on switching at runtime to real DataSource.The reality of the mechanism
Existing principle is, using Proxy patterns, to realize a virtual data source, and select to patrol come encapsulation of data source with it in scheme
Volume, thus effectively data source capability logic can be separated from Client.
The dynamic data source mechanism that the present invention is provided based on Spring frameworks, according to the actual demand of business scenario, rewrites
The strategy of the searching data source that framework exposes, has been rewritten the loading strategy of data source, has been completed based on product real demand
The planning of dynamic data source mechanism.
The dynamic data source mechanism based on spring frameworks includes procedure below：The Spring's
AbstractRoutingDataSource Similar integrals have been rewritten and have obtained connection based on data source from AbstractDataSource
Method, externally expose determineCurrentLookupKey methods, by concrete implementation determine obtain data source plan
Slightly；SetTargetDataSources methods are exposed externally simultaneously, its subclass can complete data source according to actual needs
Initial work；Acquiescence reads all data source informations for being registered in current system from configuration file, then rewrites
SetTargetDataSources methods, complete the initial work of data source；Set up one to obtain and arrange context environmental
Class, be responsible for changing the title in context data source；The tenant Id of current system is read, current tenant is returned according to tenant's information
Corresponding truthful data source name；The dynamic data source is set in the data source of Spring and realizes class.
Based on the dynamic data source scheme of SpringAOP, the business demand that data source run mode is searched and switched is solved,
When data manipulation is performed, tenant id and the binding relationship of data source that the program can be realized in passing through code remove root
Need switching at runtime data source according to client, and solve the problems, such as contention for resources.
The technical program is applied on Intel Virtualization Technology, is realized using the mode of shared data bank, independent Schema
The isolation of the different isomerization system of toB ranks, using shared data bank, shared Schema, shared data table, database table it
Between tenant's level isolation of toC ranks is realized with tenantId, while based on the understanding to Spring frameworks, using towards cutting
The mode of face programming realizes a kind of solution route for being dynamically determined data source.
This scheme can make forms data source compatible with multi-data source, not affect writing for bottom code completely, if item
Mesh is exploitation in the case of forms data source at the beginning of beginning, with the carrying out of project, needs to be changed to multi-data source, then only needs to
Modification spring configurations, add current tenant id and corresponding data source information, and change is just completed；If project wishes to change back list
Data source, then only need to simply change configuration file, makes project increase more elasticity.
A kind of multi-tenant data isolation scheme for being applied to PaaS platform that the present invention is provided, is a kind of hybrid-type data
Storehouse isolation scheme, after login, based on context environment is dynamically determined the new model of data source, and its technical scheme can be compatible
The demand in two kinds of fields of toB, toC, realizes the fusion of retractility, autgmentability and sharing, has been successfully applied to UFSOFT new
Generation PaaS platform product-cloud list, realizes towards enterprise and the integration towards personal user, enriches product dimension, solve
Determine requirement of the multi-tenant architecture to data access control, realized demand of the client to resource elastic telescopic, filled up this thin
One of point field is blank.
Finally it should be noted that：Above example is only to illustrate technical scheme rather than a limitation, most
Pipe has been described in detail to the present invention with reference to above-described embodiment, and those of ordinary skill in the art still can be to this
Bright specific embodiment is modified or equivalent, these without departing from spirit and scope of the invention any modification or
Equivalent, is applying within pending claims.
Claims (5)
1. a kind of multi-tenant data isolation scheme for being applied to PaaS platform, it is characterised in that the multi-tenant data isolation side
Case is registered in data base's configuration of heterogeneous system in configuration file Datasource.xml, employs blended data isolation method
The simultaneously compatible data isolation of toB ranks and toC ranks, the configuration file Datasource.xml specify the isomery system
The database configuration information of system, there is provided based on the map information and multi-tenant unit number for pointing to one or more source databases
According to being carrying itself the tenant id when different system logs in current cloud application system that each tenant creates.
2. the multi-tenant data isolation scheme for being applied to PaaS platform according to claim 1, it is characterised in that described to match somebody with somebody
Put file Datasource.xml and cover and be integrated system database configuration information, including being integrated system unique identifier, number
Class, data base's connection string and data base administration industry information are driven according to storehouse.
3. the multi-tenant data isolation scheme for being applied to PaaS platform according to claim 1, it is characterised in that described
The data isolation of toB ranks is comprised the following steps：
S1, carries tenant id and sends data operation request；
S2, system is according to tenant id from reading database link information in preset configuration file；
S3, it is right hereof that the data source in current container is set to the tenant by the dynamic data source mechanism based on spring frameworks
The data source answered；
S4, the operation requests can carry out associative operation to corresponding data base.
4. the multi-tenant data isolation scheme for being applied to PaaS platform according to claim 1, it is characterised in that described
The data isolation of toC ranks is comprised the following steps：
S1, increases TenantId fields in using corresponding database table；
S2, when personal user initiates to ask, takes out the corresponding tenant id of current personal user from log-on message；
S3, when data base is manipulated, carries tenant's information, completes the establishment of corresponding CRUD relations based on tenant's information；
S4, with tenant's information realization in data base service data information isolation.
5. the multi-tenant data isolation scheme for being applied to PaaS platform according to claim 3, it is characterised in that the base
Include procedure below in the dynamic data source mechanism of spring frameworks：
The AbstractRoutingDataSource Similar integrals of the Spring have rewritten base from AbstractDataSource
In the method that data source obtains connection, determineCurrentLookupKey methods are externally exposed, it is true by concrete implementation
Surely obtain the strategy of data source；SetTargetDataSources methods are exposed externally simultaneously, its subclass can be according to reality
Need to complete the initial work of data source；
Acquiescence reads all data source informations for being registered in current system from configuration file, then rewrites
SetTargetDataSources methods, complete the initial work of data source；
A class for obtaining and context environmental being set is set up, is responsible for changing the title in context data source；
The tenant Id of current system is read, the corresponding truthful data source name of current tenant is returned according to tenant's information；
The dynamic data source is set in the data source of Spring and realizes class.
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