users

README

Users

Users service provides an HTTP API for managing users. Through this API clients are able to do the following actions:

• register new accounts
• login
• manage account(s) (list, update, delete)

For in-depth explanation of the aforementioned scenarios, as well as thorough understanding of Magistrala, please check out the official documentation.

Configuration

The service is configured using the environment variables presented in the following table. Note that any unset variables will be replaced with their default values.

Variable	Description	Default
MG_USERS_LOG_LEVEL	Log level for users service (debug, info, warn, error)	info
MG_USERS_ADMIN_EMAIL	Default user, created on startup	admin@example.com
MG_USERS_ADMIN_PASSWORD	Default user password, created on startup	12345678
MG_USERS_PASS_REGEX	Password regex	^.{8,}$
MG_TOKEN_RESET_ENDPOINT	Password request reset endpoint, for constructing link	/reset-request
MG_USERS_HTTP_HOST	Users service HTTP host	localhost
MG_USERS_HTTP_PORT	Users service HTTP port	9002
MG_USERS_HTTP_SERVER_CERT	Path to the PEM encoded server certificate file	""
MG_USERS_HTTP_SERVER_KEY	Path to the PEM encoded server key file	""
MG_USERS_HTTP_SERVER_CA_CERTS	Path to the PEM encoded server CA certificate file	""
MG_USERS_HTTP_CLIENT_CA_CERTS	Path to the PEM encoded client CA certificate file	""
MG_AUTH_GRPC_URL	Auth service GRPC URL	localhost:8181
MG_AUTH_GRPC_TIMEOUT	Auth service GRPC timeout	1s
MG_AUTH_GRPC_CLIENT_CERT	Path to the PEM encoded client certificate file	""
MG_AUTH_GRPC_CLIENT_KEY	Path to the PEM encoded client key file	""
MG_AUTH_GRPC_SERVER_CA_CERTS	Path to the PEM encoded server CA certificate file	""
MG_USERS_DB_HOST	Database host address	localhost
MG_USERS_DB_PORT	Database host port	5432
MG_USERS_DB_USER	Database user	magistrala
MG_USERS_DB_PASS	Database password	magistrala
MG_USERS_DB_NAME	Name of the database used by the service	users
MG_USERS_DB_SSL_MODE	Database connection SSL mode (disable, require, verify-ca, verify-full)	disable
MG_USERS_DB_SSL_CERT	Path to the PEM encoded certificate file	""
MG_USERS_DB_SSL_KEY	Path to the PEM encoded key file	""
MG_USERS_DB_SSL_ROOT_CERT	Path to the PEM encoded root certificate file	""
MG_EMAIL_HOST	Mail server host	localhost
MG_EMAIL_PORT	Mail server port	25
MG_EMAIL_USERNAME	Mail server username	""
MG_EMAIL_PASSWORD	Mail server password	""
MG_EMAIL_FROM_ADDRESS	Email "from" address	""
MG_EMAIL_FROM_NAME	Email "from" name	""
MG_EMAIL_TEMPLATE	Email template for sending emails with password reset link	email.tmpl
MG_USERS_ES_URL	Event store URL	nats://localhost:4222
MG_JAEGER_URL	Jaeger server URL	http://localhost:4318/v1/traces
MG_OAUTH_UI_REDIRECT_URL	OAuth UI redirect URL	http://localhost:9095/domains
MG_OAUTH_UI_ERROR_URL	OAuth UI error URL	http://localhost:9095/error
MG_USERS_DELETE_INTERVAL	Interval for deleting users	24h
MG_USERS_DELETE_AFTER	Time after which users are deleted	720h
MG_JAEGER_TRACE_RATIO	Jaeger sampling ratio	1.0
MG_SEND_TELEMETRY	Send telemetry to magistrala call home server.	true
MG_USERS_INSTANCE_ID	Magistrala instance ID	""

Deployment

The service itself is distributed as Docker container. Check the users service section in docker-compose file to see how service is deployed.

To start the service outside of the container, execute the following shell script:

# download the latest version of the service
git clone https://github.com/absmach/magistrala

cd magistrala

# compile the service
make users

# copy binary to bin
make install

# set the environment variables and run the service
MG_USERS_LOG_LEVEL=info \
MG_USERS_ADMIN_EMAIL=admin@example.com \
MG_USERS_ADMIN_PASSWORD=12345678 \
MG_USERS_PASS_REGEX="^.{8,}$" \
MG_TOKEN_RESET_ENDPOINT="/reset-request" \
MG_USERS_HTTP_HOST=localhost \
MG_USERS_HTTP_PORT=9002 \
MG_USERS_HTTP_SERVER_CERT="" \
MG_USERS_HTTP_SERVER_KEY="" \
MG_USERS_HTTP_SERVER_CA_CERTS="" \
MG_USERS_HTTP_CLIENT_CA_CERTS="" \
MG_AUTH_GRPC_URL=localhost:8181 \
MG_AUTH_GRPC_TIMEOUT=1s \
MG_AUTH_GRPC_CLIENT_CERT="" \
MG_AUTH_GRPC_CLIENT_KEY="" \
MG_AUTH_GRPC_SERVER_CA_CERTS="" \
MG_USERS_DB_HOST=localhost \
MG_USERS_DB_PORT=5432 \
MG_USERS_DB_USER=magistrala \
MG_USERS_DB_PASS=magistrala \
MG_USERS_DB_NAME=users \
MG_USERS_DB_SSL_MODE=disable \
MG_USERS_DB_SSL_CERT="" \
MG_USERS_DB_SSL_KEY="" \
MG_USERS_DB_SSL_ROOT_CERT="" \
MG_EMAIL_HOST=smtp.mailtrap.io \
MG_EMAIL_PORT=2525 \
MG_EMAIL_USERNAME="18bf7f7070513" \
MG_EMAIL_PASSWORD="2b0d302e775b1e" \
MG_EMAIL_FROM_ADDRESS=from@example.com \
MG_EMAIL_FROM_NAME=Example \
MG_EMAIL_TEMPLATE="docker/templates/users.tmpl" \
MG_USERS_ES_URL=nats://localhost:4222 \
MG_JAEGER_URL=http://localhost:14268/api/traces \
MG_JAEGER_TRACE_RATIO=1.0 \
MG_SEND_TELEMETRY=true \
MG_OAUTH_UI_REDIRECT_URL=http://localhost:9095/domains \
MG_OAUTH_UI_ERROR_URL=http://localhost:9095/error \
MG_USERS_DELETE_INTERVAL=24h \
MG_USERS_DELETE_AFTER=720h \
MG_USERS_INSTANCE_ID="" \
$GOBIN/magistrala-users

If MG_EMAIL_TEMPLATE doesn't point to any file service will function but password reset functionality will not work. The email environment variables are used to send emails with password reset link. The service expects a file in Go template format. The template should be something like this.

Setting MG_USERS_HTTP_SERVER_CERT and MG_USERS_HTTP_SERVER_KEY will enable TLS against the service. The service expects a file in PEM format for both the certificate and the key. Setting MG_USERS_HTTP_SERVER_CA_CERTS will enable TLS against the service trusting only those CAs that are provided. The service expects a file in PEM format of trusted CAs. Setting MG_USERS_HTTP_CLIENT_CA_CERTS will enable TLS against the service trusting only those CAs that are provided. The service expects a file in PEM format of trusted CAs.

Setting MG_AUTH_GRPC_CLIENT_CERT and MG_AUTH_GRPC_CLIENT_KEY will enable TLS against the auth service. The service expects a file in PEM format for both the certificate and the key. Setting MG_AUTH_GRPC_SERVER_CA_CERTS will enable TLS against the auth service trusting only those CAs that are provided. The service expects a file in PEM format of trusted CAs.

Usage

For more information about service capabilities and its usage, please check out the API documentation.

Documentation

Overview

Package users contains the domain concept definitions needed to support Magistrala users service functionality.

This package defines the core domain concepts and types necessary to handle users in the context of a Magistrala users service. It abstracts the underlying complexities of user management and provides a structured approach to working with users.

Index

• Constants
• Variables
• func NewDeleteHandler(ctx context.Context, users Repository, policyService policies.Service, ...)
• type Credentials
• type Emailer
• type Hasher
• type MembersPage
• type Metadata
• type Page
• type Repository
• type Role
  • func ToRole(status string) (Role, error)
  • func (r Role) MarshalJSON() ([]byte, error)
  • func (cs Role) String() string
  • func (r *Role) UnmarshalJSON(data []byte) error
• type Service
  • func NewService(token magistrala.TokenServiceClient, urepo Repository, ...) Service
• type Status
  • func ToStatus(status string) (Status, error)
  • func (s Status) MarshalJSON() ([]byte, error)
  • func (s Status) String() string
  • func (s *Status) UnmarshalJSON(data []byte) error
• type User
  • func (u User) Validate() error
• type UserRepository
• type UsersPage

Constants

const (
	Disabled = "disabled"
	Enabled  = "enabled"
	Deleted  = "deleted"
	All      = "all"
	Unknown  = "unknown"
)

String representation of the possible status values.

const (
	Admin = "admin"
)

String representation of the possible role values.

Variables

var (
	// ErrEnableClient indicates error in enabling client.
	ErrEnableClient = errors.New("failed to enable client")

	// ErrDisableClient indicates error in disabling client.
	ErrDisableClient = errors.New("failed to disable client")
)

Functions

func NewDeleteHandler

func NewDeleteHandler(ctx context.Context, users Repository, policyService policies.Service, domainsClient magistrala.DomainsServiceClient, defCheckInterval, deleteAfter time.Duration, logger *slog.Logger)

Types

type Credentials

type Credentials struct {
	Username string `json:"username,omitempty"` // username or profile name
	Secret   string `json:"secret,omitempty"`   // password or token
}

type Emailer

type Emailer interface {
	// SendPasswordReset sends an email to the user with a link to reset the password.
	SendPasswordReset(To []string, host, user, token string) error
}

Emailer wrapper around the email.

type Hasher

type Hasher interface {
	// Hash generates the hashed string from plain-text.
	Hash(string) (string, error)

	// Compare compares plain-text version to the hashed one. An error should
	// indicate failed comparison.
	Compare(string, string) error
}

Hasher specifies an API for generating hashes of an arbitrary textual content.

type MembersPage

type MembersPage struct {
	Page
	Members []User
}

MembersPage contains page related metadata as well as list of members that belong to this page.

type Metadata

type Metadata map[string]interface{}

Metadata represents arbitrary JSON.

type Page

type Page struct {
	Total      uint64   `json:"total"`
	Offset     uint64   `json:"offset"`
	Limit      uint64   `json:"limit"`
	Id         string   `json:"id,omitempty"`
	Order      string   `json:"order,omitempty"`
	Dir        string   `json:"dir,omitempty"`
	Metadata   Metadata `json:"metadata,omitempty"`
	Domain     string   `json:"domain,omitempty"`
	Tag        string   `json:"tag,omitempty"`
	Permission string   `json:"permission,omitempty"`
	Status     Status   `json:"status,omitempty"`
	IDs        []string `json:"ids,omitempty"`
	Role       Role     `json:"-"`
	ListPerms  bool     `json:"-"`
	Username   string   `json:"username,omitempty"`
	FirstName  string   `json:"first_name,omitempty"`
	LastName   string   `json:"last_name,omitempty"`
	Email      string   `json:"email,omitempty"`
}

Page contains page metadata that helps navigation.

type Repository

type Repository interface {
	// RetrieveByID retrieves user by their unique ID.
	RetrieveByID(ctx context.Context, id string) (User, error)

	// RetrieveAll retrieves all users.
	RetrieveAll(ctx context.Context, pm Page) (UsersPage, error)

	// RetrieveByEmail retrieves user by its unique credentials.
	RetrieveByEmail(ctx context.Context, email string) (User, error)

	// RetrieveByUsername retrieves user by its unique credentials.
	RetrieveByUsername(ctx context.Context, username string) (User, error)

	// Update updates the user name and metadata.
	Update(ctx context.Context, user User) (User, error)

	// UpdateUsername updates the User's names.
	UpdateUsername(ctx context.Context, user User) (User, error)

	// UpdateSecret updates secret for user with given email.
	UpdateSecret(ctx context.Context, user User) (User, error)

	// ChangeStatus changes user status to enabled or disabled
	ChangeStatus(ctx context.Context, user User) (User, error)

	// Delete deletes user with given id
	Delete(ctx context.Context, id string) error

	// Searchusers retrieves users based on search criteria.
	SearchUsers(ctx context.Context, pm Page) (UsersPage, error)

	// RetrieveAllByIDs retrieves for given user IDs .
	RetrieveAllByIDs(ctx context.Context, pm Page) (UsersPage, error)

	CheckSuperAdmin(ctx context.Context, adminID string) error

	// Save persists the user account. A non-nil error is returned to indicate
	// operation failure.
	Save(ctx context.Context, user User) (User, error)
}

type Role

type Role uint8

Role represents User role.

const (
	UserRole Role = iota
	AdminRole

	// AllRole is used for querying purposes to list users irrespective
	// of their role - both admin and user. It is never stored in the
	// database as the actual user role and should always be the largest
	// value in this enumeration.
	AllRole
)

Possible User role values.

func ToRole

func ToRole(status string) (Role, error)

ToRole converts string value to a valid User role.

func (Role) MarshalJSON

func (r Role) MarshalJSON() ([]byte, error)

func (Role) String

func (cs Role) String() string

String converts user role to string literal.

func (*Role) UnmarshalJSON

func (r *Role) UnmarshalJSON(data []byte) error

type Service

type Service interface {
	// Register creates new user. In case of the failed registration, a
	// non-nil error value is returned.
	Register(ctx context.Context, session authn.Session, user User, selfRegister bool) (User, error)

	// View retrieves user info for a given user ID and an authorized token.
	View(ctx context.Context, session authn.Session, id string) (User, error)

	// ViewProfile retrieves user info for a given token.
	ViewProfile(ctx context.Context, session authn.Session) (User, error)

	// ListUsers retrieves users list for a valid auth token.
	ListUsers(ctx context.Context, session authn.Session, pm Page) (UsersPage, error)

	// ListMembers retrieves everything that is assigned to a group/thing identified by objectID.
	ListMembers(ctx context.Context, session authn.Session, objectKind, objectID string, pm Page) (MembersPage, error)

	// SearchUsers searches for users with provided filters for a valid auth token.
	SearchUsers(ctx context.Context, pm Page) (UsersPage, error)

	// Update updates the user's name and metadata.
	Update(ctx context.Context, session authn.Session, user User) (User, error)

	// UpdateTags updates the user's tags.
	UpdateTags(ctx context.Context, session authn.Session, user User) (User, error)

	// UpdateEmail updates the user's email.
	UpdateEmail(ctx context.Context, session authn.Session, id, email string) (User, error)

	// UpdateUsername updates the user's username.
	UpdateUsername(ctx context.Context, session authn.Session, id, username string) (User, error)

	// UpdateProfilePicture updates the user's profile picture.
	UpdateProfilePicture(ctx context.Context, session authn.Session, user User) (User, error)

	// GenerateResetToken email where mail will be sent.
	// host is used for generating reset link.
	GenerateResetToken(ctx context.Context, email, host string) error

	// UpdateSecret updates the user's secret.
	UpdateSecret(ctx context.Context, session authn.Session, oldSecret, newSecret string) (User, error)

	// ResetSecret change users secret in reset flow.
	// token can be authentication token or secret reset token.
	ResetSecret(ctx context.Context, session authn.Session, secret string) error

	// SendPasswordReset sends reset password link to email.
	SendPasswordReset(ctx context.Context, host, email, user, token string) error

	// UpdateRole updates the user's Role.
	UpdateRole(ctx context.Context, session authn.Session, user User) (User, error)

	// Enable logically enables the user identified with the provided ID.
	Enable(ctx context.Context, session authn.Session, id string) (User, error)

	// Disable logically disables the user identified with the provided ID.
	Disable(ctx context.Context, session authn.Session, id string) (User, error)

	// Delete deletes user with given ID.
	Delete(ctx context.Context, session authn.Session, id string) error

	// Identify returns the user id from the given token.
	Identify(ctx context.Context, session authn.Session) (string, error)

	// IssueToken issues a new access and refresh token when provided with either a username or email.
	IssueToken(ctx context.Context, identity, secret string) (*magistrala.Token, error)

	// RefreshToken refreshes expired access tokens.
	// After an access token expires, the refresh token is used to get
	// a new pair of access and refresh tokens.
	RefreshToken(ctx context.Context, session authn.Session, refreshToken string) (*magistrala.Token, error)

	// OAuthCallback handles the callback from any supported OAuth provider.
	// It processes the OAuth tokens and either signs in or signs up the user based on the provided state.
	OAuthCallback(ctx context.Context, user User) (User, error)

	// OAuthAddUserPolicy adds a policy to the user for an OAuth request.
	OAuthAddUserPolicy(ctx context.Context, user User) error
}

Service specifies an API that must be fullfiled by the domain service implementation, and all of its decorators (e.g. logging & metrics).

func NewService

func NewService(token magistrala.TokenServiceClient, urepo Repository, policyService policies.Service, emailer Emailer, hasher Hasher, idp magistrala.IDProvider) Service

NewService returns a new Users service implementation.

type Status

type Status uint8

Status represents User status.

const (
	// EnabledStatus represents enabled User.
	EnabledStatus Status = iota
	// DisabledStatus represents disabled User.
	DisabledStatus
	// DeletedStatus represents a user that will be deleted.
	DeletedStatus

	// AllStatus is used for querying purposes to list users irrespective
	// of their status - both enabled and disabled. It is never stored in the
	// database as the actual User status and should always be the largest
	// value in this enumeration.
	AllStatus
)

Possible User status values.

func ToStatus

func ToStatus(status string) (Status, error)

ToStatus converts string value to a valid User/Group status.

func (Status) MarshalJSON

func (s Status) MarshalJSON() ([]byte, error)

Custom Marshaller for Uesr/Groups.

func (Status) String

func (s Status) String() string

String converts user/group status to string literal.

func (*Status) UnmarshalJSON

func (s *Status) UnmarshalJSON(data []byte) error

Custom Unmarshaler for User/Groups.

type User

type User struct {
	ID             string      `json:"id"`
	FirstName      string      `json:"first_name,omitempty"`
	LastName       string      `json:"last_name,omitempty"`
	Tags           []string    `json:"tags,omitempty"`
	Metadata       Metadata    `json:"metadata,omitempty"`
	Status         Status      `json:"status"`                    // 0 for enabled, 1 for disabled
	Role           Role        `json:"role"`                      // 0 for normal user, 1 for admin
	ProfilePicture string      `json:"profile_picture,omitempty"` // profile picture URL
	Credentials    Credentials `json:"credentials,omitempty"`
	Permissions    []string    `json:"permissions,omitempty"`
	Email          string      `json:"email,omitempty"`
	CreatedAt      time.Time   `json:"created_at,omitempty"`
	UpdatedAt      time.Time   `json:"updated_at,omitempty"`
	UpdatedBy      string      `json:"updated_by,omitempty"`
}

func (User) Validate

func (u User) Validate() error

Validate returns an error if user representation is invalid.

type UserRepository

type UserRepository struct {
	DB postgres.Database
}

UserRepository struct implements the Repository interface.

type UsersPage

type UsersPage struct {
	Page
	Users []User
}