Add docker

services/entry/.dockerignore

@@ -0,0 +1 @@
+tmp/

services/entry/Dockerfile

@@ -0,0 +1,12 @@
+FROM golang:1.17-bullseye
+
+RUN go install github.com/cosmtrek/air@latest
+# Development don't need this
+# COPY . /app/
+WORKDIR /app/
+
+ARG DATABASE_URL
+ENV DATABASE_URL DATABASE_URL
+
+#CMD go run main.go
+CMD air

services/entry/go.mod

@@ -0,0 +1,78 @@
+module serverctl
+
+go 1.17
+
+require (
+	github.com/Microsoft/go-winio v0.4.17 // indirect
+	github.com/XiaoMi/pegasus-go-client v0.0.0-20210427083443-f3b6b08bc4c2 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b // indirect
+	github.com/cenkalti/backoff/v4 v4.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/containerd/containerd v1.5.9 // indirect
+	github.com/dgraph-io/ristretto v0.1.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/docker/distribution v2.8.0+incompatible // indirect
+	github.com/docker/docker v20.10.12+incompatible // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/eko/gocache v1.2.0 // indirect
+	github.com/georgysavva/scany v0.3.0 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.7.7 // indirect
+	github.com/go-co-op/gocron v1.12.0 // indirect
+	github.com/go-playground/locales v0.13.0 // indirect
+	github.com/go-playground/universal-translator v0.17.0 // indirect
+	github.com/go-playground/validator/v10 v10.4.1 // indirect
+	github.com/go-redis/redis/v8 v8.8.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
+	github.com/golang/protobuf v1.5.0 // indirect
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgconn v1.11.0 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.2.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
+	github.com/jackc/pgtype v1.10.0 // indirect
+	github.com/jackc/pgx v3.6.2+incompatible // indirect
+	github.com/jackc/pgx/v4 v4.15.0 // indirect
+	github.com/jackc/puddle v1.2.1 // indirect
+	github.com/json-iterator/go v1.1.10 // indirect
+	github.com/leodido/go-urn v1.2.0 // indirect
+	github.com/mattn/go-isatty v0.0.12 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.0.2 // indirect
+	github.com/pegasus-kv/thrift v0.13.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.10.0 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.18.0 // indirect
+	github.com/prometheus/procfs v0.6.0 // indirect
+	github.com/robfig/cron/v3 v3.0.1 // indirect
+	github.com/sirupsen/logrus v1.8.1 // indirect
+	github.com/spf13/cast v1.3.1 // indirect
+	github.com/ugorji/go/codec v1.1.7 // indirect
+	go.opentelemetry.io/otel v0.19.0 // indirect
+	go.opentelemetry.io/otel/metric v0.19.0 // indirect
+	go.opentelemetry.io/otel/trace v0.19.0 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.21.0 // indirect
+	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
+	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4 // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	golang.org/x/sys v0.0.0-20210823070655-63515b42dcdf // indirect
+	golang.org/x/text v0.3.6 // indirect
+	google.golang.org/genproto v0.0.0-20201110150050-8816d57aaa9a // indirect
+	google.golang.org/grpc v1.44.0 // indirect
+	google.golang.org/protobuf v1.27.1 // indirect
+	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
+	gopkg.in/tomb.v2 v2.0.0-20161208151619-d5d1b5820637 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	k8s.io/apimachinery v0.20.6 // indirect
+)

services/entry/main.go

@@ -0,0 +1,258 @@
+package main
+
+import (
+	"context"
+	"github.com/dgraph-io/ristretto"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/client"
+	"github.com/eko/gocache/cache"
+	"github.com/eko/gocache/metrics"
+	"github.com/eko/gocache/store"
+	"github.com/gin-gonic/gin"
+	"github.com/go-co-op/gocron"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"serverctl/pkg/application/projects"
+	"serverctl/pkg/application/users"
+	"serverctl/pkg/db"
+	"serverctl/pkg/db/postgres"
+	"time"
+)
+
+func setupLogger() *zap.Logger {
+	highPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
+		return lvl >= zapcore.ErrorLevel
+	})
+	lowPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
+		return lvl < zapcore.ErrorLevel
+	})
+	fileDebugging := zapcore.AddSync(ioutil.Discard)
+	fileErrors := zapcore.AddSync(ioutil.Discard)
+
+	consoleDebugging := zapcore.Lock(os.Stdout)
+	consoleErrors := zapcore.Lock(os.Stderr)
+
+	fileEncoder := zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig())
+	_ = zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig())
+
+	core := zapcore.NewTee(
+		zapcore.NewCore(fileEncoder, fileErrors, highPriority),
+		zapcore.NewCore(fileEncoder, consoleErrors, highPriority),
+		zapcore.NewCore(fileEncoder, fileDebugging, lowPriority),
+		zapcore.NewCore(fileEncoder, consoleDebugging, lowPriority),
+	)
+
+	logger := zap.New(core)
+	defer logger.Sync()
+	return logger
+}
+func BasicAuthMiddleware(l *zap.Logger, us *users.Service) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		username, password, hasAuth := c.Request.BasicAuth()
+		if !hasAuth {
+			l.Info("user could not be authenticated",
+				zap.String("username", username))
+			c.Header("WWW-Authenticate", "Basic realm=serverctl")
+			c.Abort()
+			c.JSON(http.StatusUnauthorized, gin.H{"message": "credentials were invalid (authorization header missing)"})
+			return
+		}
+
+		user, err := us.Authenticate(c.Request.Context(), username, password)
+		if err != nil {
+			l.Info("user could not be authenticated",
+				zap.String("username", username))
+			c.Abort()
+			c.Header("WWW-Authenticate", "Basic realm=serverctl")
+			c.JSON(http.StatusUnauthorized, gin.H{"message": "credentials were invalid (credentials didn't match)"})
+			return
+		}
+
+		l.Debug("user has been authenticated",
+			zap.Int("userId", user.Id),
+			zap.String("email", user.Email))
+		c.Set("userId", user.Id)
+		c.Next()
+	}
+}
+func setupApi(l *zap.Logger, cc *cache.MetricCache, us *users.Service, ps *projects.Service) {
+	l.Info("Setting up serverctl setupApi (using gin)")
+
+	r := gin.Default()
+
+	promHandler := func() gin.HandlerFunc {
+		h := promhttp.Handler()
+
+		return func(c *gin.Context) {
+			h.ServeHTTP(c.Writer, c.Request)
+		}
+	}
+	r.GET("/metrics", promHandler())
+
+	r.POST("/auth/register", func(c *gin.Context) {
+		type RegisterUser struct {
+			Email    string `json:"email" binding:"required"`
+			Password string `json:"password" binding:"required"`
+		}
+		var registerUser RegisterUser
+		if err := c.BindJSON(&registerUser); err != nil {
+			return
+		}
+
+		createUser, err := us.Create(registerUser.Email, registerUser.Password)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"message": "you have provided invalid input"})
+			return
+		}
+
+		c.JSON(http.StatusCreated, gin.H{"message": "user has been registered", "userId": createUser})
+	})
+
+	projectsApi := r.Group("/projects", BasicAuthMiddleware(l, us))
+	projectsApi.POST("/", func(c *gin.Context) {
+		type CreateProjectRequest struct {
+			Name string `json:"name" binding:"required"`
+		}
+		var createProjectRequest CreateProjectRequest
+		if err := c.BindJSON(&createProjectRequest); err != nil {
+			return
+		}
+
+		userId, _ := c.Get("userId")
+		createProjectId, err := ps.CreateProject(c.Request.Context(), userId.(int), createProjectRequest.Name)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"message": "you have provided invalid input"})
+			return
+		}
+
+		c.JSON(http.StatusCreated, gin.H{"message": "project has been created", "projectId": createProjectId})
+	})
+	projectsApi.GET("/", func(c *gin.Context) {
+		userId, _ := c.Get("userId")
+
+		projectsArr, err := ps.Get(c.Request.Context(), userId.(int))
+		if err != nil {
+			l.Warn(err.Error())
+			return
+		}
+
+		type GetProject struct {
+			Id        int    `json:"id" binding:"required"`
+			Name      string `json:"name" binding:"required"`
+			MemberIds []int  `json:"memberIds" binding:"required"`
+			AdminIds  []int  `json:"adminIds" binding:"required"`
+		}
+
+		getProject := make([]GetProject, 0)
+		for _, p := range projectsArr {
+			getProject = append(getProject, GetProject{
+				Id:        p.Id,
+				Name:      p.Name,
+				MemberIds: p.MemberIds,
+				AdminIds:  p.AdminIds,
+			})
+		}
+		c.JSON(http.StatusOK, getProject)
+	})
+
+	containers := r.Group("/containers", BasicAuthMiddleware(l, us))
+	containers.GET("/", func(c *gin.Context) {
+		type container struct {
+			Name string `json:"name"`
+		}
+		var msg struct {
+			Containers []container `json:"containers"`
+		}
+
+		get, err := cc.Get("docker-containers")
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"message": "could not get containers from container runtime"})
+			return
+		}
+
+		msg.Containers = []container{}
+		for _, cont := range get.([]types.Container) {
+			msg.Containers = append(msg.Containers, container{
+				Name: cont.Names[0],
+			})
+		}
+
+		c.JSON(http.StatusOK, msg)
+	})
+
+	r.Run(":8080")
+
+}
+func setupDocker(l *zap.Logger) *client.Client {
+	l.Info("Setting up Docker")
+	cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
+	if err != nil {
+		panic(err)
+	}
+
+	return cli
+}
+func setupCache(l *zap.Logger) *cache.MetricCache {
+	l.Info("Setting up cache")
+	ristrettoCache, err := ristretto.NewCache(&ristretto.Config{
+		NumCounters: 1000,
+		MaxCost:     100_000_000,
+		BufferItems: 64,
+	})
+	promMetrics := metrics.NewPrometheus("serverctl")
+
+	if err != nil {
+		panic(err)
+	}
+	ristrettoStore := store.NewRistretto(ristrettoCache, nil)
+
+	cacheManager := cache.New(ristrettoStore)
+	metricsCache := cache.NewMetric(promMetrics, cacheManager)
+
+	return metricsCache
+}
+func setupCron(l *zap.Logger, cm *cache.MetricCache, cc *client.Client) {
+	l.Info("Setting up job scheduler (cron)")
+
+	s := gocron.NewScheduler(time.UTC)
+
+	s.Every(10).Second().Do(func() {
+		l.Debug("getting container list")
+		list, err := cc.ContainerList(context.Background(), types.ContainerListOptions{})
+		if err != nil {
+			l.Warn(err.Error())
+			return
+		}
+
+		err = cm.Set("docker-containers", list, &store.Options{
+			Cost: 2,
+		})
+		if err != nil {
+			l.Warn(err.Error())
+			return
+		}
+	})
+
+	s.StartAsync()
+}
+
+func main() {
+	logger := setupLogger()
+	logger.Info("Starting serverctl")
+
+	cacheM := setupCache(logger)
+	containerClient := setupDocker(logger)
+	setupCron(logger, cacheM, containerClient)
+
+	database := db.NewClient(logger)
+	usersRepository := postgres.NewUsersRepository(database)
+	usersService := users.NewService(logger, usersRepository, cacheM)
+	projectsRepository := postgres.NewProjectsRepository(database)
+	projectsService := projects.NewService(logger, projectsRepository, cacheM)
+
+	setupApi(logger, cacheM, usersService, projectsService)
+}

services/entry/pkg/application/projects/model.go

@@ -0,0 +1,31 @@
+package projects
+
+type Project struct {
+	Id        int
+	Name      string
+	MemberIds []int
+	AdminIds  []int
+}
+
+func NewProject(id int, name string, memberIds []int, adminIds []int) *Project {
+	return &Project{
+		Id:        id,
+		Name:      name,
+		MemberIds: memberIds,
+		AdminIds:  adminIds,
+	}
+}
+
+type CreateProject struct {
+	Name      string
+	MemberIds []int
+	AdminIds  []int
+}
+
+func NewCreateProject(name string, userId int) *CreateProject {
+	return &CreateProject{
+		Name:      name,
+		MemberIds: []int{userId},
+		AdminIds:  []int{userId},
+	}
+}

services/entry/pkg/application/projects/repository.go

@@ -0,0 +1,8 @@
+package projects
+
+import "context"
+
+type Repository interface {
+	Create(ctx context.Context, project *CreateProject) (int, error)
+	GetForMemberId(ctx context.Context, memberId int) ([]*Project, error)
+}

services/entry/pkg/application/projects/service.go

@@ -0,0 +1,59 @@
+package projects
+
+import (
+	"context"
+	"fmt"
+	"github.com/eko/gocache/cache"
+	"go.uber.org/zap"
+)
+
+type Service struct {
+	projectsRepository Repository
+	logger             *zap.Logger
+	cache              *cache.MetricCache
+}
+
+func NewService(logger *zap.Logger, projectsRepository Repository, cache *cache.MetricCache) *Service {
+	return &Service{
+		logger:             logger,
+		projectsRepository: projectsRepository,
+		cache:              cache}
+}
+
+func (s *Service) CreateProject(ctx context.Context, userId int, name string) (int, error) {
+	s.logger.Debug("creating project",
+		zap.String("name", name),
+		zap.Int("creatorId", userId))
+
+	projectId, err := s.projectsRepository.Create(ctx, NewCreateProject(name, userId))
+	if err != nil {
+		s.logger.Warn(err.Error())
+		return -1, err
+	}
+
+	_ = s.cache.Delete(fmt.Sprintf("projects_userId_%d", userId))
+
+	return projectId, nil
+}
+
+func (s *Service) Get(ctx context.Context, userId int) ([]*Project, error) {
+	s.logger.Debug("getting projects",
+		zap.Int("userId", userId))
+
+	loadFunc := func(key interface{}) (interface{}, error) {
+		s.logger.Debug("getting projects from repository",
+			zap.Int("userId", userId))
+		return s.projectsRepository.GetForMemberId(ctx, userId)
+	}
+
+	cacheEntry := cache.NewLoadable(
+		loadFunc,
+		s.cache)
+
+	entry, err := cacheEntry.Get(fmt.Sprintf("projects_userId_%d", userId))
+	if err != nil {
+		return nil, err
+	}
+
+	return entry.([]*Project), nil
+}

services/entry/pkg/application/users/model.go

@@ -0,0 +1,10 @@
+package users
+
+type User struct {
+	Id    int
+	Email string
+}
+
+func NewUser(id int, email string) *User {
+	return &User{id, email}
+}

services/entry/pkg/application/users/repository.go

@@ -0,0 +1,8 @@
+package users
+
+import "context"
+
+type Repository interface {
+	Create(ctx context.Context, user *CreateUser) (int, error)
+	GetByEmail(ctx context.Context, email string, passwordHash string) (*User, error)
+}

services/entry/pkg/application/users/service.go

@@ -0,0 +1,54 @@
+package users
+
+import (
+	"context"
+	"fmt"
+	"github.com/eko/gocache/cache"
+	"go.uber.org/zap"
+)
+
+type Service struct {
+	logger         *zap.Logger
+	cache          *cache.MetricCache
+	repository     Repository
+	passwordHasher PasswordHasher
+}
+
+func NewService(l *zap.Logger, ur Repository, c *cache.MetricCache) *Service {
+	return &Service{
+		logger:         l,
+		repository:     ur,
+		cache:          c,
+		passwordHasher: NewPlainTextPasswordHasher(),
+	}
+}
+
+func (s *Service) Create(email string, password string) (int, error) {
+	createUser, err := NewCreateUser(email, password, s.passwordHasher)
+	if err != nil {
+		return -1, err
+	}
+
+	var userId int
+	userId, err = s.repository.Create(context.Background(), createUser)
+	if err != nil {
+		s.logger.Warn("Could not create user in service")
+		return 0, err
+	}
+
+	return userId, nil
+}
+
+func (s *Service) Authenticate(ctx context.Context, email string, password string) (*User, error) {
+	loadFunc := func(key interface{}) (interface{}, error) {
+		s.logger.Debug("getting user from cache", zap.String("email", email))
+		return s.repository.GetByEmail(ctx, email, s.passwordHasher.HashPassword(password))
+	}
+
+	get, err := cache.NewLoadable(loadFunc, s.cache).Get(fmt.Sprintf("user_email_%s", email))
+	if err != nil {
+		return nil, err
+	}
+
+	return get.(*User), nil
+}

services/entry/pkg/application/users/user.go

@@ -0,0 +1,49 @@
+package users
+
+import "errors"
+
+type PasswordHasher interface {
+	HashPassword(password string) string
+}
+
+type CreateUser struct {
+	Email        string
+	PasswordHash string
+}
+
+func NewCreateUser(email string, password string, hasher PasswordHasher) (*CreateUser, error) {
+	if email == "" {
+		return nil, errors.New("Email cannot be empty for user")
+	}
+	if password == "" || len(password) < 8 {
+		return nil, errors.New("password is doesn't fit requirements")
+	}
+
+	return &CreateUser{
+		Email:        email,
+		PasswordHash: hasher.HashPassword(password),
+	}, nil
+}
+
+type bCryptPasswordHasher struct {
+}
+
+func NewBCryptPasswordHasher() PasswordHasher {
+	return &bCryptPasswordHasher{}
+}
+
+func (b bCryptPasswordHasher) HashPassword(password string) string {
+	//TODO implement me
+	panic("implement me")
+}
+
+type plainTextPasswordHasher struct {
+}
+
+func NewPlainTextPasswordHasher() PasswordHasher {
+	return &plainTextPasswordHasher{}
+}
+
+func (p plainTextPasswordHasher) HashPassword(password string) string {
+	return password
+}

services/entry/pkg/db/db.go

@@ -0,0 +1,50 @@
+package db
+
+import (
+	"context"
+	"errors"
+	"github.com/jackc/pgx/v4/pgxpool"
+	"go.uber.org/zap"
+	"os"
+)
+
+type Client struct {
+	pool *pgxpool.Pool
+}
+
+func NewClient(l *zap.Logger) *Client {
+	l.Info("Setting up database connection")
+
+	dbPool := setupPool()
+	testConnection(dbPool)
+
+	l.Info("Database successfully connected")
+
+	return &Client{pool: dbPool}
+}
+
+func setupPool() *pgxpool.Pool {
+	dbUrl := os.Getenv("DATABASE_URL")
+	if dbUrl == "" {
+		panic(errors.New("DATABASE_URL is not set"))
+	}
+	dbPool, err := pgxpool.Connect(context.Background(), dbUrl)
+	if err != nil {
+		panic(err)
+	}
+
+	return dbPool
+}
+
+func testConnection(dbPool *pgxpool.Pool) {
+	var greeting string
+	err := dbPool.QueryRow(context.Background(), "select 'Hello, world!'").Scan(&greeting)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func (c *Client) GetConn(ctx context.Context) *pgxpool.Conn {
+	conn, _ := c.pool.Acquire(ctx)
+	return conn
+}

services/entry/pkg/db/postgres/projectsRepository.go

@@ -0,0 +1,66 @@
+package postgres
+
+import (
+	"context"
+	"serverctl/pkg/application/projects"
+	"serverctl/pkg/db"
+)
+
+var _ projects.Repository = &ProjectsRepository{}
+
+type ProjectsRepository struct {
+	db *db.Client
+}
+
+func NewProjectsRepository(db *db.Client) projects.Repository {
+	return &ProjectsRepository{db: db}
+}
+
+type projectData struct {
+	Name      string `json:"name"`
+	MemberIds []int  `json:"memberIds"`
+	AdminIds  []int  `json:"adminIds"`
+}
+
+func NewProjectData(project *projects.CreateProject) projectData {
+	return projectData{
+		Name:      project.Name,
+		AdminIds:  project.AdminIds,
+		MemberIds: project.MemberIds,
+	}
+}
+
+func (p ProjectsRepository) Create(ctx context.Context, project *projects.CreateProject) (int, error) {
+	conn := p.db.GetConn(ctx)
+	defer conn.Release()
+
+	var projectId int
+	err := conn.QueryRow(ctx, "insert into sctl_project(data) values ($1) returning id", NewProjectData(project)).Scan(&projectId)
+	if err != nil {
+		return -1, err
+	}
+
+	return projectId, nil
+}
+
+func (p ProjectsRepository) GetForMemberId(ctx context.Context, memberId int) ([]*projects.Project, error) {
+	conn := p.db.GetConn(ctx)
+	defer conn.Release()
+
+	rows, _ := conn.Query(ctx, "select id, data from sctl_project")
+	projectsArr := make([]*projects.Project, 0)
+
+	for rows.Next() {
+		var (
+			id   int
+			data projectData
+		)
+		err := rows.Scan(&id, &data)
+		if err != nil {
+			return nil, err
+		}
+		projectsArr = append(projectsArr, projects.NewProject(id, data.Name, data.MemberIds, data.AdminIds))
+	}
+
+	return projectsArr, nil
+}

services/entry/pkg/db/postgres/usersRepository.go

@@ -0,0 +1,49 @@
+package postgres
+
+import (
+	"context"
+	"errors"
+	users2 "serverctl/pkg/application/users"
+	"serverctl/pkg/db"
+)
+
+var _ users2.Repository = &usersRepository{}
+
+type usersRepository struct {
+	databasePool *db.Client
+}
+
+func NewUsersRepository(db *db.Client) users2.Repository {
+	return &usersRepository{db}
+}
+
+func (u *usersRepository) Create(ctx context.Context, user *users2.CreateUser) (int, error) {
+	var userId int
+	conn := u.databasePool.GetConn(ctx)
+	defer conn.Release()
+
+	conn.QueryRow(ctx, "INSERT INTO sctl_user(email, password_hash) values ($1, $2) RETURNING id", user.Email, user.PasswordHash).Scan(&userId)
+
+	if userId == 0 {
+		return -1, errors.New("could not insert data into users table")
+	}
+
+	return userId, nil
+}
+
+func (u *usersRepository) GetByEmail(ctx context.Context, email string, passwordHash string) (*users2.User, error) {
+	conn := u.databasePool.GetConn(ctx)
+	defer conn.Release()
+
+	var id int
+	err := conn.QueryRow(ctx, "select id from sctl_user where email = $1 and password_hash = $2", email, passwordHash).Scan(&id)
+	if err != nil {
+		return nil, err
+	}
+
+	if id <= 0 {
+		return nil, errors.New("user with that password doesn't exist")
+	}
+
+	return users2.NewUser(id, email), nil
+}