feat: add feature based structure

cmd/api/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/gin-gonic/gin"
+	"github.com/jackc/pgx/v5"
+
+	user "tutorial.sqlc.dev/app/internal/author"
+)
+
+func run() error {
+	ctx := context.Background()
+
+	conn, err := pgx.Connect(ctx, "postgres://postgres:supersecretpassword@localhost:5432/sqlc_tutorial")
+	if err != nil {
+		return err
+	}
+	defer conn.Close(ctx)
+
+	r := gin.Default()
+	userCtl := user.NewController(conn)
+	user.Register(r, &userCtl)
+
+	r.Run(":8000")
+	return nil
+}
+
+func main() {
+	if err := run(); err != nil {
+		log.Fatal(err)
+	}
+}

docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+  db:
+    image: postgres:17-alpine
+    environment:
+      POSTGRES_PASSWORD: supersecretpassword
+    ports:
+      - 5432:5432
+
+  adminer:
+    image: adminer
+    restart: always
+    ports:
+      - 8080:8080

go.mod

@@ -0,0 +1,36 @@
+module tutorial.sqlc.dev/app
+
+go 1.24.6
+
+require (
+	github.com/bytedance/sonic v1.11.6 // indirect
+	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/cloudwego/base64x v0.1.4 // indirect
+	github.com/cloudwego/iasm v0.2.0 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.10.1 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.20.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/pgx/v5 v5.7.5 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	golang.org/x/arch v0.8.0 // indirect
+	golang.org/x/crypto v0.37.0 // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/sys v0.32.0 // indirect
+	golang.org/x/text v0.24.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,85 @@
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internal/author/controller.go

@@ -0,0 +1,26 @@
+package user
+
+import (
+	"context"
+
+	"github.com/gin-gonic/gin"
+	"tutorial.sqlc.dev/app/internal/author/gen"
+)
+
+type Controller struct {
+	queries gen.Queries
+}
+
+func NewController(conn gen.DBTX) Controller {
+	return Controller{
+		queries: *gen.New(conn),
+	}
+}
+
+func (u *Controller) ListAuthors(ctx *gin.Context) {
+	authors, err := u.queries.ListAuthors(context.Background())
+	if err != nil {
+		ctx.AbortWithError(500, err)
+	}
+	ctx.JSON(200, authors)
+}

internal/author/gen/db.go

@@ -0,0 +1,32 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.29.0
+
+package gen
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type DBTX interface {
+	Exec(context.Context, string, ...interface{}) (pgconn.CommandTag, error)
+	Query(context.Context, string, ...interface{}) (pgx.Rows, error)
+	QueryRow(context.Context, string, ...interface{}) pgx.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx pgx.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}

internal/author/gen/models.go

@@ -0,0 +1,15 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.29.0
+
+package gen
+
+import (
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+type Author struct {
+	ID   int64
+	Name string
+	Bio  pgtype.Text
+}

internal/author/gen/query.sql.go

@@ -0,0 +1,99 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.29.0
+// source: query.sql
+
+package gen
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+const createAuthor = `-- name: CreateAuthor :one
+INSERT INTO authors (
+  name, bio
+) VALUES (
+  $1, $2
+)
+RETURNING id, name, bio
+`
+
+type CreateAuthorParams struct {
+	Name string
+	Bio  pgtype.Text
+}
+
+func (q *Queries) CreateAuthor(ctx context.Context, arg CreateAuthorParams) (Author, error) {
+	row := q.db.QueryRow(ctx, createAuthor, arg.Name, arg.Bio)
+	var i Author
+	err := row.Scan(&i.ID, &i.Name, &i.Bio)
+	return i, err
+}
+
+const deleteAuthor = `-- name: DeleteAuthor :exec
+DELETE FROM authors
+WHERE id = $1
+`
+
+func (q *Queries) DeleteAuthor(ctx context.Context, id int64) error {
+	_, err := q.db.Exec(ctx, deleteAuthor, id)
+	return err
+}
+
+const getAuthor = `-- name: GetAuthor :one
+SELECT id, name, bio FROM authors
+WHERE id = $1 LIMIT 1
+`
+
+func (q *Queries) GetAuthor(ctx context.Context, id int64) (Author, error) {
+	row := q.db.QueryRow(ctx, getAuthor, id)
+	var i Author
+	err := row.Scan(&i.ID, &i.Name, &i.Bio)
+	return i, err
+}
+
+const listAuthors = `-- name: ListAuthors :many
+SELECT id, name, bio FROM authors
+ORDER BY name
+`
+
+func (q *Queries) ListAuthors(ctx context.Context) ([]Author, error) {
+	rows, err := q.db.Query(ctx, listAuthors)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Author
+	for rows.Next() {
+		var i Author
+		if err := rows.Scan(&i.ID, &i.Name, &i.Bio); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const updateAuthor = `-- name: UpdateAuthor :exec
+UPDATE authors
+  set name = $2,
+  bio = $3
+WHERE id = $1
+RETURNING id, name, bio
+`
+
+type UpdateAuthorParams struct {
+	ID   int64
+	Name string
+	Bio  pgtype.Text
+}
+
+func (q *Queries) UpdateAuthor(ctx context.Context, arg UpdateAuthorParams) error {
+	_, err := q.db.Exec(ctx, updateAuthor, arg.ID, arg.Name, arg.Bio)
+	return err
+}

internal/author/query.sql

@@ -0,0 +1,26 @@
+-- name: GetAuthor :one
+SELECT * FROM authors
+WHERE id = $1 LIMIT 1;
+
+-- name: ListAuthors :many
+SELECT * FROM authors
+ORDER BY name;
+
+-- name: CreateAuthor :one
+INSERT INTO authors (
+  name, bio
+) VALUES (
+  $1, $2
+)
+RETURNING *;
+
+-- name: UpdateAuthor :exec
+UPDATE authors
+  set name = $2,
+  bio = $3
+WHERE id = $1
+RETURNING *;
+
+-- name: DeleteAuthor :exec
+DELETE FROM authors
+WHERE id = $1;

internal/author/router.go

@@ -0,0 +1,8 @@
+package user
+
+import "github.com/gin-gonic/gin"
+
+func Register(r gin.IRouter, ctl *Controller) {
+	g := r.Group("/authors")
+	g.GET("", ctl.ListAuthors)
+}

internal/author/schema.sql

@@ -0,0 +1,5 @@
+CREATE TABLE authors (
+  id   BIGSERIAL PRIMARY KEY,
+  name text      NOT NULL,
+  bio  text
+);

sqlc.yaml

@@ -0,0 +1,10 @@
+version: "2"
+sql:
+  - engine: "postgresql"
+    queries: "internal/author/query.sql"
+    schema: "internal/author/schema.sql"
+    gen:
+      go:
+        package: "gen"
+        out: "internal/author/gen"
+        sql_package: "pgx/v5"

tutorial/db.go

@@ -0,0 +1,32 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.29.0
+
+package tutorial
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type DBTX interface {
+	Exec(context.Context, string, ...interface{}) (pgconn.CommandTag, error)
+	Query(context.Context, string, ...interface{}) (pgx.Rows, error)
+	QueryRow(context.Context, string, ...interface{}) pgx.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx pgx.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}

tutorial/models.go

@@ -0,0 +1,15 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.29.0
+
+package tutorial
+
+import (
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+type Author struct {
+	ID   int64
+	Name string
+	Bio  pgtype.Text
+}