db

Documentation

Overview

Package db provides support for access the database.

Index

• Variables
• func ExecContext(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string) error
• func NamedExecContext(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func NamedQuerySlice[T any](ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func NamedQuerySliceUsingIn[T any](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 NamedQueryStructUsingIn(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func Open(cfg Config) (*sqlx.DB, error)
• func QuerySlice[T any](ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func QueryStruct(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, ...) error
• func StatusCheck(ctx context.Context, db *sqlx.DB) error
• func WithinTran(ctx context.Context, log *zap.SugaredLogger, db *sqlx.DB, ...) error
• type Config

Variables

var (
	ErrDBNotFound        = sql.ErrNoRows
	ErrDBDuplicatedEntry = errors.New("duplicated entry")
	ErrUndefinedTable    = errors.New("undefined table")
)

Set of error variables for CRUD operations.

Functions

func ExecContext

func ExecContext(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string) error

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

func NamedExecContext

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

NamedExecContext is a helper function to execute a CUD operation with logging and tracing where field replacement is necessary.

func NamedQuerySlice

func NamedQuerySlice[T any](ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, data any, dest *[]T) error

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

func NamedQuerySliceUsingIn

func NamedQuerySliceUsingIn[T any](ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, data any, dest *[]T) error

NamedQuerySliceUsingIn is a helper function for executing queries that return a collection of data to be unmarshalled into a slice where field replacement is necessary. Use this if the query has an IN clause.

func NamedQueryStruct

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

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

func NamedQueryStructUsingIn

func NamedQueryStructUsingIn(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, data any, dest any) error

NamedQueryStructUsingIn is a helper function for executing queries that return a single value to be unmarshalled into a struct type where field replacement is necessary. Use this if the query has an IN clause.

func Open

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

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

func QuerySlice

func QuerySlice[T any](ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, dest *[]T) error

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

func QueryStruct

func QueryStruct(ctx context.Context, log *zap.SugaredLogger, db sqlx.ExtContext, query string, dest any) error

QueryStruct is a helper function for executing queries that return a single value to be unmarshalled into a struct type where field replacement is necessary.

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 *sqlx.DB, fn func(*sqlx.Tx) error) error

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

Types

type Config

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

Config is the required properties to use the database.