Last updated: 2024-12-24 01:09:59.549040 File source: link on GitLab
This sub package contains CloverDB implementation of the database interfaces.
Here is quick overview of the contents of this pacakge:
README: Current file which is aimed towards developers who wish to use and modify the database functionality.
generic_repository: This file implements the methods of GenericRepository interface.
generic_entity_repository: This file implements the methods of GenericEntityRepository interface.
deployment: This file contains implementation of DeploymentRequestFlat interface.
elk_stats: This file contains implementation of RequestTracker interface.
firecracker: This file contains implementation of VirtualMachine interface.
machine: This file contains implementation of interfaces defined in machine.go.
utils: This file contains utility functions with respect to clover implementation.
All files with *_test.go naming convention contain unit tests with respect to the specific implementation.
The class diagram for the clover package is shown below.
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GenericRepository
NewGenericRepository
signature: NewGenericRepository[T repositories.ModelType](db *clover.DB) -> repositories.GenericRepository[T]
input: clover Database object
output: Repository of type db.clover.GenericRepositoryclover
NewGenericRepository function creates a new instance of GenericRepositoryclover struct. It initializes and returns a repository with the provided clover database.
Interface Methods
See db package readme for methods of GenericRepository interface
query
signature: query(includeDeleted bool) -> *clover_q.Query
input: boolean value to choose whether to include deleted records
output: CloverDB query object
query function creates and returns a new CloverDB Query object. Input value of False will add a condition to exclude the deleted records.
queryWithID
signature: queryWithID(id interface{}, includeDeleted bool) -> *clover_q.Query
input #1: identifier
input #2: boolean value to choose whether to include deleted records
output: CloverDB query object
queryWithID function creates and returns a new CloverDB Query object. The provided inputs are added to query conditions. The identifier will be compared to primary key field value of the repository.
Providing includeDeleted as False will add a condition to exclude the deleted records.
GenericEntityRepository
NewGenericEntityRepository
signature: NewGenericEntityRepository[T repositories.ModelType](db *clover.DB) repositories.GenericEntityRepository[T]
input: clover Database object
output: Repository of type db.clover.GenericEntityRepositoryclover
NewGenericEntityRepository creates a new instance of GenericEntityRepositoryclover struct. It initializes and returns a repository with the provided clover database instance and name of the collection in the database.
Interface Methods
See db package readme for methods of GenericEntityRepository interface.
query
signature: query() -> *clover_q.Query
input: None
output: CloverDB query object
query function creates and returns a new CloverDB Query object.
db.clover.GenericRepositoryClover: This is a generic repository implementation using clover as an ORM
db.clover.GenericEntityRepositoryClover: This is a generic single entity repository implementation using clover as an ORM
For other data types refer to db package readme.
Refer to *_test.go files for unit tests of different functionalities.
List of issues
All issues that are related to the implementation of db package can be found below. These include any proposals for modifications to the package or new functionality needed to cover the requirements of other packages.
Last updated: 2024-12-24 01:10:00.272034 File source: link on GitLab
This sub package contains Gorm implementation of the database interfaces.
Here is quick overview of the contents of this pacakge:
README: Current file which is aimed towards developers who wish to use and modify the database functionality.
generic_repository: This file implements the methods of GenericRepository interface.
generic_entity_repository: This file implements the methods of GenericEntityRepository interface.
deployment: This file contains implementation of DeploymentRequestFlat interface.
elk_stats: This file contains implementation of RequestTracker interface.
firecracker: This file contains implementation of VirtualMachine interface.
machine: This file contains implementation of interfaces defined in machine.go.
utils: This file contains utility functions with respect to Gorm implementation.
All files with *_test.go naming convention contain unit tests with respect to the specific implementation.
The class diagram for the gorm package is shown below.
Source file
Rendered from source file
GenericRepository
NewGenericRepository
signature: NewGenericRepository[T repositories.ModelType](db *gorm.DB) -> repositories.GenericRepository[T]
input: Gorm Database object
output: Repository of type db.gorm.GenericRepositoryGORM
NewGenericRepository function creates a new instance of GenericRepositoryGORM struct. It initializes and returns a repository with the provided GORM database.
Interface Methods
See db package readme for methods of GenericRepository interface.
GenericEntityRepository
NewGenericEntityRepository
signature: NewGenericEntityRepository[T repositories.ModelType](db *gorm.DB) -> repositories.GenericEntityRepository[T]
input #1: Gorm Database object
output: Repository of type db.gorm.GenericEntityRepositoryGORM
NewGenericEntityRepository creates a new instance of GenericEntityRepositoryGORM struct. It initializes and returns a repository with the provided GORM database.
Interface Methods
See db package readme for methods of GenericEntityRepository interface.
db.gorm.GenericRepositoryGORM: This is a generic repository implementation using GORM as an ORM.
db.gorm.GenericEntityRepositoryGORM: This is a generic single entity repository implementation using GORM as an ORM
For other data types refer to db package readme.
Refer to *_test.go files for unit tests of different functionalities.
List of issues
All issues that are related to the implementation of db package can be found below. These include any proposals for modifications to the package or new functionality needed to cover the requirements of other packages.
Last updated: 2024-12-24 01:09:58.751273 File source: link on GitLab
This package defines the local database functionality for the Device Management Service (DMS). Currently two repository structures have been implemented:
gorm: which is a SQlite database implementation.
clover: which is a NoSQL or document oriented database implementation.
Here is quick overview of the contents of this pacakge:
README: Current file which is aimed towards developers who wish to use and modify the package functionality.
db.go: This file defines the method which opens an SQlite database at a path set by the config parameter work_dir, applies migration and returns the db instance.
repositories: This folder contains the sub-packages of the db package.
specs: This folder contains the class diagram of the package.
The class diagram for the db package is shown below.
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Refer to the README file defined in the repositories folder for specification of the package.
Last updated: 2024-12-24 01:09:58.999243 File source: link on GitLab
The db package contains the configuration and functionality of database used by the DMS
Here is quick overview of the contents of this pacakge:
Files
README: Current file which is aimed towards developers who wish to use and modify the database functionality.
generic_repository: This file defines the interface defining the main methods for db pacakge. It is designed using generic types and can be adapted to specific data type as needed.
generic_entity_repository: This file contains the interface for those databases which will hold only a single record.
deployment: This file specifies a database interface having types.DeploymentRequestFlat data type.
elk_stats: This file specifies a database interface having types.RequestTracker data type.
errors: This file specifies the different types of errors.
firecracker: This file specifies a database interface having types.VirtualMachine data type.
machine: This file defines database interfaces of various data types.
utils: This file contains some utility functions with respect to database operations.
utils_test: This file contains unit tests for functions defined in utils.go file.
Subpackages
gorm: This folder contains SQlite database implementation using gorm.
clover: This folder contains CloverDB database implementation.
The class diagram for the db package is shown below.
Source file
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There are two types of interfaces defined to cover database operations:
GenericRepository
GenericEntityRepository
These interfaces are described below.
GenericRepository Interface
GenericRepository interface defines basic CRUD operations and standard querying methods. It is defined with generic data types. This allows it to be used for any data type.
interface definition: type GenericRepository[T ModelType] interface
The methods of GenericRepository are as follows:
Create
signature: Create(ctx context.Context, data T) -> (T, error)
input #1: Go context
input #2: Data to be added to the database. It should be of type used to initialize the repository
output (success): Data type used to initialize the repository
output (error): error message
Create function adds a new record to the database.
Get
signature: Get(ctx context.Context, id interface{}) -> (T, error)
input #1: Go context
input #2: Identifier of the record. Can be any data type
output (success): Data with the identifier provided. It is of type used to initialize the repository
output (error): error message
Get function retrieves a record from the database by its identifier.
Update
signature: Update(ctx context.Context, id interface{}, data T) -> (T, error)
input #1: Go context
input #2: Identifier of the record. Can be any data type
input #3: New data of type used to initialize the repository
output (success): Updated record of type used to initialize the repository
output (error): error message
Update function modifies an existing record in the database using its identifier.
Delete
signature: Delete(ctx context.Context, id interface{}) -> error
input #1: Go context
input #2: Identifier of the record. Can be any data type
output (success): None
output (error): error message
Delete function deletes an existing record in the database using its identifier.
Find
signature: Find(ctx context.Context, query Query[T]) -> (T, error)
input #1: Go context
input #2: Query of type db.query
output (success): Result of query having the data type used to initialize the repository
output (error): error message
Find function retrieves a single record from the database based on a query.
FindAll
signature: FindAll(ctx context.Context, query Query[T]) -> ([]T, error)
input #1: Go context
input #2: Query of type db.query
output (success): Lists of records based on query result. The data type of each record will be what was used to initialize the repository
output (error): error message
FindAll function retrieves multiple records from the database based on a query.
GetQuery
signature: GetQuery() -> Query[T]
input: None
output: Query of type db.query
GetQuery function returns an empty query instance for the repository's type.
GenericEntityRepository Interface
GenericEntityRepository defines basic CRUD operations for repositories handling a single record. It is defined with generic data types. This allows it to be used for any data type.
interface definition: type GenericEntityRepository[T ModelType] interface
The methods of GenericEntityRepository are as follows:
Save
signature: Save(ctx context.Context, data T) -> (T, error)
input #1: Go context
input #2: Data to be saved of type used to initialize the database
output (success): Updated record of type used to initialize the repository
output (error): error message
Save function adds or updates a single record in the repository
Get
signature: Get(ctx context.Context) -> (T, error)
input: Go context
output (success): Record of type used to initialize the repository
output (error): error message
Get function retrieves the single record from the database.
Clear
signature: Clear(ctx context.Context) -> error
input: Go context
output (success): None
output (error): error
Clear function removes the record and its history from the repository.
History
signature: History(ctx context.Context, qiery Query[T]) -> ([]T, error)
input #1: Go context
input #2: query of type db.query
output (success):List of records of repository's type
output (error): error
History function retrieves previous records from the repository which satisfy the query conditions.
GetQuery
signature: GetQuery() -> Query[T]
input: None
output: New query of type db.query
GetQuery function returns an empty query instance for the repository's type.
db.Query: This contains parameters related to a query that is passed to the database.
db.QueryCondition: This contains parameters defining a query condition.
GenericRepository has been initialised for the following data types:
types.DeploymentRequestFlat
types.VirtualMachine
types.PeerInfo
types.Machine
types.Services
types.ServiceResourceRequirements
types.Connection
types.ElasticToken
GenericEntityRepository has been initialised for the following data types:
types.FreeResources
types.AvailableResources
types.Libp2pInfo
types.MachineUUID
The unit tests for utility functions are defined in utils_test.go. Refer to *_test.go files for unit tests of various implementations covered in subpackages.
List of issues
All issues that are related to the implementation of db package can be found below. These include any proposals for modifications to the package or new functionality needed to cover the requirements of other packages.