database

Documentation

Overview

Package database provides support for access the database.

Index

• Variables
• func NamedExecContext(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func NamedQuerySlice(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func NamedQueryStruct(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func Open(cfg Config) (*sqlx.DB, error)
• func StatusCheck(ctx context.Context, db *sqlx.DB) error
• func WithinTran(ctx context.Context, log *zap.SugaredLogger, db Transactor, ...) error
• type Config
• type Transactor

Variables

var (
	ErrDBNotFound        = errors.New("not found")
	ErrDBDuplicatedEntry = errors.New("duplicated entry")
)

Set of error variables for CRUD operations.

Functions

func NamedExecContext

func NamedExecContext(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, data interface{}) error

NamedExecContext is a helper function to execute a CUD operation with logging and tracing.

func NamedQuerySlice

func NamedQuerySlice(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, data interface{}, dest interface{}) error

NamedQuerySlice is a helper function for executing queries that return a collection of data to be unmarshalled into a slice.

func NamedQueryStruct

func NamedQueryStruct(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, data interface{}, dest interface{}) error

NamedQueryStruct is a helper function for executing queries that return a single value to be unmarshalled into a struct type.

func Open

func Open(cfg Config) (*sqlx.DB, error)

Open knows how to open a database connection based on the configuration.

func StatusCheck

func StatusCheck(ctx context.Context, db *sqlx.DB) error

StatusCheck returns nil if it can successfully talk to the database. It returns a non-nil error otherwise.

func WithinTran

func WithinTran(ctx context.Context, log *zap.SugaredLogger, db Transactor, fn func(sqlx.ExtContext) error) error

WithinTran runs passed function and do commit/rollback at the end.

Types

type Config

type Config struct {
	User         string
	Password     string
	Host         string
	Name         string
	MaxIdleConns int
	MaxOpenConns int
	DisableTLS   bool
}

Config is the required properties to use the database.

type Transactor

type Transactor interface {
	Beginx() (*sqlx.Tx, error)
}

Transactor interface needed to begin transaction.