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db.go
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db.go
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/*
Copyright (C) 2016 H2O.ai, Inc. <http://h2o.ai/>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package data
import (
"database/sql"
"encoding/json"
"fmt"
"log"
"strconv"
"github.com/h2oai/steam/master/auth"
"github.com/h2oai/steam/master/az"
_ "github.com/mattn/go-sqlite3"
"github.com/pkg/errors"
)
//
// ----- Privilege / Sharing rules -----
//
// --------------------------------------
// Entity Own Edit View
// --------------------------------------
// Role
// Read x x x
// Update x x
// Assign Permission x x
// Delete x
// Share x
//
// Workgroup
// Read x x x
// Update x x
// Delete x
// Share x
//
// Identity
// Read x x x
// Assign Role x x
// Assign Workgroup x x
// Update x x
// Delete x
// Share x
//
// Cluster
// Read x x x
// Start/Stop x
//
// Project
// Read x x x
// Assign Model x x
// Update x x
// Delete x
// Share x
//
// Engine, Datasource, Dataset, Model
// Read x x x
// Update x x
// Delete x
// Share x
//
// --------------------------------------
const (
View = 1 << iota
Edit // 2
Own // 4
)
const (
Version = "1.1.0"
SuperuserRoleName = "Superuser"
CanView = "view"
CanEdit = "edit"
Owns = "own"
ForIdentity = "identity"
ForWorkgroup = "workgroup"
RoleEntity = "role"
WorkgroupEntity = "workgroup"
IdentityEntity = "identity"
EngineEntity = "engine"
ClusterEntity = "cluster"
ProjectEntity = "project"
DatasourceEntity = "datasource"
DatasetEntity = "dataset"
ModelEntity = "model"
LabelEntity = "label"
ServiceEntity = "service"
ClusterExternal = "external"
ClusterYarn = "yarn"
)
const (
IdleState = "idle"
StartingState = "starting"
StartedState = "started"
SuspendingState = "suspending"
SuspendedState = "suspended"
StoppingState = "stopping"
StoppedState = "stopped"
BlockedState = "blocked"
DisconnectedState = "disconnected"
FailedState = "failed"
CompletedState = "completed"
)
const (
ManageRole = "ManageRole"
ViewRole = "ViewRole"
ManageWorkgroup = "ManageWorkgroup"
ViewWorkgroup = "ViewWorkgroup"
ManageIdentity = "ManageIdentity"
ViewIdentity = "ViewIdentity"
ManageEngine = "ManageEngine"
ViewEngine = "ViewEngine"
ManageCluster = "ManageCluster"
ViewCluster = "ViewCluster"
ManageProject = "ManageProject"
ViewProject = "ViewProject"
ManageDatasource = "ManageDatasource"
ViewDatasource = "ViewDatasource"
ManageDataset = "ManageDataset"
ViewDataset = "ViewDataset"
ManageModel = "ManageModel"
ViewModel = "ViewModel"
ManageLabel = "ManageLabel"
ViewLabel = "ViewLabel"
ManageService = "ManageService"
ViewService = "ViewService"
)
var (
Privileges map[string]int
Permissions []Permission
EntityTypes []EntityType
ClusterTypes []ClusterType
)
func init() {
Privileges = map[string]int{
CanView: View,
CanEdit: Edit,
Owns: Own,
}
Permissions = []Permission{
{0, ManageRole, "Manage roles"},
{0, ViewRole, "View roles"},
{0, ManageWorkgroup, "Manage workgroups"},
{0, ViewWorkgroup, "View workgroups"},
{0, ManageIdentity, "Manage identities"},
{0, ViewIdentity, "View identities"},
{0, ManageEngine, "Manage engines"},
{0, ViewEngine, "View engines"},
{0, ManageCluster, "Manage clusters"},
{0, ViewCluster, "View clusters"},
{0, ManageProject, "Manage projects"},
{0, ViewProject, "View projects"},
{0, ManageDatasource, "Manage datasources"},
{0, ViewDatasource, "View datasources"},
{0, ManageDataset, "Manage datasets"},
{0, ViewDataset, "View datasets"},
{0, ManageModel, "Manage models"},
{0, ViewModel, "View models"},
{0, ManageLabel, "Manage labels"},
{0, ViewLabel, "View labels"},
{0, ManageService, "Manage services"},
{0, ViewService, "View services"},
}
EntityTypes = []EntityType{
{0, RoleEntity},
{0, WorkgroupEntity},
{0, IdentityEntity},
{0, EngineEntity},
{0, ClusterEntity},
{0, ProjectEntity},
{0, DatasourceEntity},
{0, DatasetEntity},
{0, ModelEntity},
{0, LabelEntity},
{0, ServiceEntity},
}
ClusterTypes = []ClusterType{
{0, ClusterExternal},
{0, ClusterYarn},
}
}
type metadata map[string]string
type PermissionKeys struct {
ManageRole int64
ViewRole int64
ManageWorkgroup int64
ViewWorkgroup int64
ManageIdentity int64
ViewIdentity int64
ManageEngine int64
ViewEngine int64
ManageCluster int64
ViewCluster int64
ManageProject int64
ViewProject int64
ManageDatasource int64
ViewDatasource int64
ManageDataset int64
ViewDataset int64
ManageModel int64
ViewModel int64
ManageLabel int64
ViewLabel int64
ManageService int64
ViewService int64
}
type EntityTypeKeys struct {
Role int64
Workgroup int64
Identity int64
Engine int64
Cluster int64
Project int64
Datasource int64
Dataset int64
Model int64
Label int64
Service int64
}
type ClusterTypeKeys struct {
External int64
Yarn int64
}
func toPermissionKeys(permissions []Permission) *PermissionKeys {
m := make(map[string]int64)
for _, p := range permissions {
m[p.Code] = p.Id
}
return &PermissionKeys{
m[ManageRole],
m[ViewRole],
m[ManageWorkgroup],
m[ViewWorkgroup],
m[ManageIdentity],
m[ViewIdentity],
m[ManageEngine],
m[ViewEngine],
m[ManageCluster],
m[ViewCluster],
m[ManageProject],
m[ViewProject],
m[ManageDatasource],
m[ViewDatasource],
m[ManageDataset],
m[ViewDataset],
m[ManageModel],
m[ViewModel],
m[ManageLabel],
m[ViewLabel],
m[ManageService],
m[ViewService],
}
}
func toEntityTypeKeys(entityTypes []EntityType) *EntityTypeKeys {
m := make(map[string]int64)
for _, et := range entityTypes {
m[et.Name] = et.Id
}
return &EntityTypeKeys{
m[RoleEntity],
m[WorkgroupEntity],
m[IdentityEntity],
m[EngineEntity],
m[ClusterEntity],
m[ProjectEntity],
m[DatasourceEntity],
m[DatasetEntity],
m[ModelEntity],
m[LabelEntity],
m[ServiceEntity],
}
}
func toClusterTypeKeys(clusterTypes []ClusterType) *ClusterTypeKeys {
m := make(map[string]int64)
for _, ct := range clusterTypes {
m[ct.Name] = ct.Id
}
return &ClusterTypeKeys{
m[ClusterExternal],
m[ClusterYarn],
}
}
type Datastore struct {
db *sql.DB // Singleton; doesn't actually connect until used, and is pooled internally.
metadata metadata
permissions []Permission
permissionMap map[int64]Permission
Permissions *PermissionKeys
entityTypes []EntityType
entityTypeMap map[int64]EntityType
EntityTypes *EntityTypeKeys
clusterTypes []ClusterType
clusterTypeMap map[int64]ClusterType
ClusterTypes *ClusterTypeKeys
ViewPermissions map[int64]int64
ManagePermissions map[int64]int64
}
func Create(dbPath, suname, supass string) (*Datastore, error) {
// connectionString := createConnectionString(connection)
db, err := connect(dbPath)
if err != nil {
return nil, fmt.Errorf("Failed connecting to database using %s: %s", dbPath, err)
}
primed, err := isPrimed(db)
if err != nil {
return nil, fmt.Errorf("Failed database version check:", err)
}
if !primed {
if suname == "" || supass == "" {
return nil, fmt.Errorf("Starting Steam for the first time requires both --superuser-name and --superuser-password arguments to \"steam serve master\".")
}
if err := auth.ValidateUsername(suname); err != nil {
return nil, fmt.Errorf("Invalid superuser username: %s", err)
}
if err := auth.ValidatePassword(supass); err != nil {
return nil, fmt.Errorf("Invalid superuser password: %s", err)
}
if err := prime(db); err != nil {
return nil, fmt.Errorf("Failed priming database: %s", err)
}
}
ds, err := newDatastore(db)
if err != nil {
return nil, fmt.Errorf("Failed initializing from database: %s", err)
}
if !primed {
passwordHash, err := auth.HashPassword(supass)
if err != nil {
return nil, fmt.Errorf("Failed hashing superuser password: %s", err)
}
if _, _, err := ds.CreateSuperuser(suname, passwordHash); err != nil {
return nil, fmt.Errorf("Failed superuser identity setup: %s", err)
}
_, err = ds.Lookup(suname)
if err != nil {
return nil, fmt.Errorf("Failed reading superuser principal: %s", err)
}
}
return ds, nil
}
func Destroy(dbPath string) error {
// connectionString := createConnectionString(connection)
db, err := connect(dbPath)
if err != nil {
return fmt.Errorf("Failed connecting to database using %s: %s", dbPath, err)
}
return truncate(db)
}
type Connection struct {
DbName string
User string
Password string
Host string
Port string
ConnectionTimeout string
SSLMode string
SSLCert string
SSLKey string
SSLRootCert string
}
func createConnectionString(c Connection) string {
s := fmt.Sprintf("dbname=%s", c.DbName)
m := map[string]string{
"user": c.User,
"password": c.Password,
"host": c.Host,
"port": c.Port,
"connect_timeout": c.ConnectionTimeout,
"sslmode": c.SSLMode,
"sslcert": c.SSLCert,
"sslkey": c.SSLKey,
"sslrootcert": c.SSLRootCert,
}
for k, v := range m {
if len(v) > 0 {
s = s + " " + k + "=" + v
}
}
return s
}
func connect(dbPath string) (*sql.DB, error) {
// Open connection
db, err := sql.Open("sqlite3", dbPath)
if err != nil {
return nil, errors.Wrap(err, "failed opening database")
}
// Set configurations (eg. use fk constraints)
if _, err := db.Exec(`
PRAGMA foreign_keys = ON
`); err != nil {
return nil, errors.Wrap(err, "failed configuring database")
}
// Verify connection
if err := db.Ping(); err != nil {
return nil, errors.Wrap(err, "failed pinging database")
}
// TODO can use db.SetMaxOpenConns() and db.SetMaxIdleConns() to configure further.
return db, nil
}
// TODO deprecated?
// // FIXME logging need to be handled for testing
// // log.Println("Connecting to database: user =", username, "db =", dbname, "SSL=", sslmode, "...")
// // Open connection
// db, err := sql.Open("postgres", connection)
// if err != nil {
// return nil, fmt.Errorf("Database connection failed: %s", err)
// }
// // Verify connection
// if err := db.Ping(); err != nil {
// return nil, fmt.Errorf("Database ping failed: %s", err)
// }
// return db, nil
// }
// newDatastore creates a new instance of a data access object.
//
// Valid values for sslmode are:
// disable - No SSL
// require - Always SSL (skip verification)
// verify-ca - Always SSL (verify that the certificate presented by the server was signed by a trusted CA)
// verify-full - Always SSL (verify that the certification presented by the server was signed by a
// trusted CA and the server host name matches the one in the certificate)
func newDatastore(db *sql.DB) (*Datastore, error) {
// Read meta information
metadata, err := readMetadata(db)
if err != nil {
return nil, err
}
version, ok := metadata["version"]
if !ok {
return nil, fmt.Errorf("Failed reading schema version")
}
// FIXME logging needs to be handled for testing
// log.Println("Using schema version:", version)
if err := upgrade(db, version); err != nil {
return nil, err
}
permissions, err := readAllPermissions(db)
if err != nil {
return nil, err
}
permissionMap := make(map[int64]Permission)
for _, permission := range permissions {
permissionMap[permission.Id] = permission
}
permissionKeys := toPermissionKeys(permissions)
entityTypes, err := readEntityTypes(db)
if err != nil {
return nil, err
}
entityTypeMap := make(map[int64]EntityType)
for _, et := range entityTypes {
entityTypeMap[et.Id] = et
}
entityTypeKeys := toEntityTypeKeys(entityTypes)
clusterTypes, err := readClusterTypes(db)
if err != nil {
return nil, err
}
clusterTypeMap := make(map[int64]ClusterType)
for _, ct := range clusterTypes {
clusterTypeMap[ct.Id] = ct
}
viewPermissions := map[int64]int64{
entityTypeKeys.Engine: permissionKeys.ViewEngine,
entityTypeKeys.Cluster: permissionKeys.ViewCluster,
entityTypeKeys.Project: permissionKeys.ViewProject,
entityTypeKeys.Datasource: permissionKeys.ViewDatasource,
entityTypeKeys.Dataset: permissionKeys.ViewDataset,
entityTypeKeys.Model: permissionKeys.ViewModel,
entityTypeKeys.Label: permissionKeys.ViewLabel,
entityTypeKeys.Service: permissionKeys.ViewService,
entityTypeKeys.Identity: permissionKeys.ViewIdentity,
entityTypeKeys.Role: permissionKeys.ViewRole,
entityTypeKeys.Workgroup: permissionKeys.ViewWorkgroup,
}
managePermissions := map[int64]int64{
entityTypeKeys.Engine: permissionKeys.ManageEngine,
entityTypeKeys.Cluster: permissionKeys.ManageCluster,
entityTypeKeys.Project: permissionKeys.ManageProject,
entityTypeKeys.Datasource: permissionKeys.ManageDatasource,
entityTypeKeys.Dataset: permissionKeys.ManageDataset,
entityTypeKeys.Model: permissionKeys.ManageModel,
entityTypeKeys.Label: permissionKeys.ManageLabel,
entityTypeKeys.Service: permissionKeys.ManageService,
entityTypeKeys.Identity: permissionKeys.ManageIdentity,
entityTypeKeys.Role: permissionKeys.ManageRole,
entityTypeKeys.Workgroup: permissionKeys.ManageWorkgroup,
}
return &Datastore{
db,
metadata,
permissions,
permissionMap,
permissionKeys,
entityTypes,
entityTypeMap,
entityTypeKeys,
clusterTypes,
clusterTypeMap,
toClusterTypeKeys(clusterTypes),
viewPermissions,
managePermissions,
}, nil
}
func isPrimed(db *sql.DB) (bool, error) {
row := db.QueryRow(`
SELECT
count(1)
FROM
meta
`)
count, err := scanInt(row)
if err != nil {
return false, err
}
return count > 0, err
}
func prime(db *sql.DB) error {
// FIXME logging needs to be handled for testing
// log.Println("Priming database for first time use...")
if err := createMetadata(db, "version", Version); err != nil {
return err
}
if err := primePermissions(db, Permissions); err != nil {
return errors.Wrap(err, "failed priming permissions")
}
if err := primeEntityTypes(db, EntityTypes); err != nil {
return errors.Wrap(err, "failed priming entity_types")
}
if err := primeClusterTypes(db, ClusterTypes); err != nil {
return errors.Wrap(err, "failed priming cluster_types")
}
return nil
}
func insertIn(table string, columns ...string) string {
stmt := "INSERT INTO '" + table + "' ("
for i, col := range columns {
if i != 0 {
stmt += ", "
}
stmt += "'" + col + "'"
}
stmt += ") VALUES ("
for i := range columns {
if i != 0 {
stmt += ", "
}
stmt += "?"
}
stmt += ")"
return stmt
}
func bulkInsert(db *sql.DB, table string, columns []string, f func(*sql.Stmt) error) error {
tx, err := db.Begin()
if err != nil {
return err
}
defer tx.Rollback()
stmt, err := tx.Prepare(insertIn(table, columns...))
if err != nil {
return err
}
defer stmt.Close()
if err := f(stmt); err != nil { // buffer
return err
}
if err := tx.Commit(); err != nil {
return err
}
return nil
}
func createMetadata(db *sql.DB, key, value string) error {
_, err := db.Exec(`
INSERT INTO
meta
(key, value)
VALUES
($1, $2)
`, key, value)
return err
}
func primeEntityTypes(db *sql.DB, entityTypes []EntityType) error {
return bulkInsert(db, "entity_type", []string{"name"}, func(stmt *sql.Stmt) error {
for _, entityType := range entityTypes {
_, err := stmt.Exec(entityType.Name)
if err != nil {
return errors.Wrap(err, "failed entity_types bulk insert")
}
}
return nil
})
}
func primeClusterTypes(db *sql.DB, clusterTypes []ClusterType) error {
return bulkInsert(db, "cluster_type", []string{"name"}, func(stmt *sql.Stmt) error {
for _, clusterType := range clusterTypes {
_, err := stmt.Exec(clusterType.Name)
if err != nil {
return errors.Wrap(err, "failed cluster_types bulk insert")
}
}
return nil
})
}
func primePermissions(db *sql.DB, permissions []Permission) error {
return bulkInsert(db, "permission", []string{"code", "description"}, func(stmt *sql.Stmt) error {
for _, permission := range permissions {
_, err := stmt.Exec(permission.Code, permission.Description)
if err != nil {
return errors.Wrap(err, "failed permissions bulk insert")
}
}
return nil
})
}
func upgrade(db *sql.DB, currentVersion string) error {
for currentVersion != Version {
var err error
switch {
case currentVersion == "1":
log.Println("Upgrading database to 1.1.0")
currentVersion, err = upgradeTo_1_1_0(db)
}
if err != nil {
return errors.Wrap(err, "upgrading database")
}
}
return nil
}
func truncate(db *sql.DB) error {
// FIXME logging needs to be handled for testing
// log.Println("Truncating database...")
return executeTransaction(db, func(tx *sql.Tx) error {
tables := []string{
"history",
"privilege",
"role_permission",
"identity_role",
"identity_workgroup",
"identity",
"workgroup",
"role",
"permission",
"entity_type",
"service",
"label",
"binomial_model",
"multinomial_model",
"regression_model",
"model",
"dataset",
"datasource",
"project",
"cluster",
"cluster_yarn",
"cluster_type",
"engine",
"meta",
}
for _, table := range tables {
if _, err := tx.Exec("DELETE FROM " + table); err != nil {
return err
}
}
return nil
})
}
// --- Superuser ---
func (ds *Datastore) CreateSuperuser(name, password string) (int64, int64, error) {
var id, workgroupId int64
err := ds.exec(func(tx *sql.Tx) error {
var err error
workgroupId, err = createDefaultWorkgroup(tx, name)
if err != nil {
return errors.Wrap(err, "creating workgroup")
}
id, err = createIdentity(tx, name, password, workgroupId)
if err != nil {
return errors.Wrap(err, "creating identity")
}
if err := linkIdentityAndWorkgroup(tx, id, workgroupId); err != nil {
return errors.Wrap(err, "linking identity and workgroup")
}
if err := createPrivilege(tx, Privilege{
Owns,
workgroupId,
ds.EntityTypes.Identity,
id,
}); err != nil {
return errors.Wrap(err, "creating identity privilege")
}
if err := createPrivilege(tx, Privilege{
Owns,
workgroupId,
ds.EntityTypes.Workgroup,
workgroupId,
}); err != nil {
return errors.Wrap(err, "creating workgroup privilege")
}
roleId, err := createRole(tx, SuperuserRoleName, SuperuserRoleName)
if err != nil {
return errors.Wrap(err, "creating role")
}
if err := linkIdentityAndRole(tx, id, roleId); err != nil {
return nil
}
return nil
})
return id, workgroupId, err
}
// --- Lookup tables (static) ---
func readMetadataValue(db *sql.DB, key string) (string, error) {
row := db.QueryRow(`
SELECT
value
FROM
meta
WHERE
name = $1
`, key)
return scanString(row)
}
func readMetadata(db *sql.DB) (map[string]string, error) {
rows, err := db.Query(`
SELECT
id, key, value
FROM
meta
`)
if err != nil {
return nil, err
}
defer rows.Close()
entries, err := ScanMetas(rows)
if err != nil {
return nil, err
}
lookup := make(map[string]string)
for _, entry := range entries {
lookup[entry.Key] = entry.Value
}
return lookup, nil
}
func readEntityTypes(db *sql.DB) ([]EntityType, error) {
rows, err := db.Query(`
SELECT
id, name
FROM
entity_type
`)
if err != nil {
return nil, err
}
defer rows.Close()
return ScanEntityTypes(rows)
}
func readClusterTypes(db *sql.DB) ([]ClusterType, error) {
rows, err := db.Query(`
SELECT
id, name
FROM
cluster_type
`)
if err != nil {
return nil, err
}
defer rows.Close()
return ScanClusterTypes(rows)
}
func executeTransaction(db *sql.DB, f func(*sql.Tx) error) error {
// Open transaction; Rollback in event
tx, err := db.Begin()
if err != nil {
return err
}
defer tx.Rollback()
// Execute transaction and return corresponding value (usually id)
if err := f(tx); err != nil {
return err
}
return tx.Commit()
}
func (ds *Datastore) exec(f func(*sql.Tx) error) error {
return executeTransaction(ds.db, f)
}
func (ds *Datastore) toPermissionDescription(id int64) (string, error) {
if p, ok := ds.permissionMap[id]; ok {
return p.Description, nil
} else {
return "", fmt.Errorf("Invalid permission id: %d", id)
}
}
func (ds *Datastore) toPermissionDescriptions(ids []int64) ([]string, error) {
descriptions := make([]string, len(ids))
for i, id := range ids {
description, err := ds.toPermissionDescription(id)
if err != nil {
return nil, err
}
descriptions[i] = description
}
return descriptions, nil
}
func scanInt(r *sql.Row) (int64, error) {
var value int64
if err := r.Scan(&value); err != nil {
return value, err
}
return value, nil
}
func scanInts(rs *sql.Rows) ([]int64, error) {
values := make([]int64, 0, 16)
var err error
for rs.Next() {
var value int64
if err = rs.Scan(&value); err != nil {
return nil, err
}
values = append(values, value)
}
if err = rs.Err(); err != nil {
return nil, err
}
return values, nil
}
func scanString(r *sql.Row) (string, error) {
var value string
if err := r.Scan(&value); err != nil {
return value, err
}
return value, nil
}
func scanStrings(rs *sql.Rows) ([]string, error) {
values := make([]string, 0, 16)
var err error
for rs.Next() {
var value string
if err = rs.Scan(&value); err != nil {
return nil, err
}
values = append(values, value)
}
if err = rs.Err(); err != nil {
return nil, err
}
return values, nil
}
// --- History ---
const (
CreateOp string = "create"
UpdateOp string = "update"
DeleteOp string = "delete"
EnableOp string = "enable"
DisableOp string = "disable"
ShareOp string = "share"
UnshareOp string = "unshare"
LinkOp string = "link"
UnlinkOp string = "unlink"
)
func (ds *Datastore) audit(pz az.Principal, tx *sql.Tx, action string, entityTypeId, entityId int64, metadata metadata) error {
json, err := json.Marshal(metadata)
if err != nil {
return err
}
if _, err := tx.Exec(`
INSERT INTO
history
(identity_id, action, entity_type_id, entity_id, description, created)
VALUES
($1, $2, $3, $4, $5, datetime('now'))
`, pz.Id(), action, entityTypeId, entityId, string(json)); err != nil {
return err
}