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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package schema
import (
"context"
"encoding/json"
"fmt"
"regexp"
"strings"
"github.com/weaviate/weaviate/entities/models"
"github.com/weaviate/weaviate/entities/schema"
uco "github.com/weaviate/weaviate/usecases/objects"
"github.com/weaviate/weaviate/usecases/schema/migrate"
"github.com/weaviate/weaviate/usecases/sharding"
)
var regexTenantName = regexp.MustCompile(`^` + schema.ShardNameRegexCore + `$`)
// tenantsPath is the main path used for authorization
const tenantsPath = "schema/tenants"
// AddTenants is used to add new tenants to a class
// Class must exist and has partitioning enabled
func (m *Manager) AddTenants(ctx context.Context,
principal *models.Principal,
class string,
tenants []*models.Tenant,
) (created []*models.Tenant, err error) {
if err = m.Authorizer.Authorize(principal, "update", tenantsPath); err != nil {
return
}
validated, err := validateTenants(tenants)
if err != nil {
return
}
if err = validateActivityStatuses(validated, true); err != nil {
return
}
cls := m.getClassByName(class)
if cls == nil {
err = fmt.Errorf("class %q: %w", class, ErrNotFound)
return
}
if !schema.MultiTenancyEnabled(cls) {
err = fmt.Errorf("multi-tenancy is not enabled for class %q", class)
return
}
names := make([]string, len(validated))
for i, tenant := range validated {
names[i] = tenant.Name
}
// create transaction payload
partitions, err := m.getPartitions(cls, names)
if err != nil {
err = fmt.Errorf("get partitions from class %q: %w", class, err)
return
}
if len(partitions) != len(names) {
m.logger.WithField("action", "add_tenants").
WithField("#partitions", len(partitions)).
WithField("#requested", len(names)).
Tracef("number of partitions for class %q does not match number of requested tenants", class)
}
request := AddTenantsPayload{
Class: class,
Tenants: make([]TenantCreate, 0, len(partitions)),
}
for i, name := range names {
part, ok := partitions[name]
if ok {
request.Tenants = append(request.Tenants, TenantCreate{
Name: name,
Nodes: part,
Status: schema.ActivityStatus(validated[i].ActivityStatus),
})
}
}
// open cluster-wide transaction
tx, err := m.cluster.BeginTransaction(ctx, addTenants,
request, DefaultTxTTL)
if err != nil {
err = fmt.Errorf("open cluster-wide transaction: %w", err)
return
}
if err := m.cluster.CommitWriteTransaction(ctx, tx); err != nil {
m.logger.WithError(err).Errorf("not every node was able to commit")
}
err = m.onAddTenants(ctx, cls, request) // actual update
if err != nil {
m.logger.WithField("action", "add_tenants").
WithField("n", len(request.Tenants)).
WithField("class", cls.Class).Error(err)
}
created = validated
return
}
func (m *Manager) getPartitions(cls *models.Class, shards []string) (map[string][]string, error) {
rf := int64(1)
if cls.ReplicationConfig != nil && cls.ReplicationConfig.Factor > rf {
rf = cls.ReplicationConfig.Factor
}
m.schemaCache.RLock()
defer m.schemaCache.RUnlock()
st := m.schemaCache.ShardingState[cls.Class]
if st == nil {
return nil, fmt.Errorf("sharding state %w", ErrNotFound)
}
return st.GetPartitions(m.clusterState, shards, rf)
}
func validateTenants(tenants []*models.Tenant) (validated []*models.Tenant, err error) {
uniq := make(map[string]*models.Tenant)
for i, requested := range tenants {
if !regexTenantName.MatchString(requested.Name) {
msg := "tenant name should only contain alphanumeric characters (a-z, A-Z, 0-9), " +
"underscore (_), and hyphen (-), with a length between 1 and 64 characters"
err = uco.NewErrInvalidUserInput("tenant name at index %d: %s", i, msg)
return
}
_, found := uniq[requested.Name]
if !found {
uniq[requested.Name] = requested
}
}
validated = make([]*models.Tenant, len(uniq))
i := 0
for _, tenant := range uniq {
validated[i] = tenant
i++
}
return
}
func validateActivityStatuses(tenants []*models.Tenant, allowEmpty bool) error {
msgs := make([]string, 0, len(tenants))
for _, tenant := range tenants {
switch status := tenant.ActivityStatus; status {
case models.TenantActivityStatusHOT, models.TenantActivityStatusCOLD:
// ok
case models.TenantActivityStatusWARM, models.TenantActivityStatusFROZEN:
msgs = append(msgs, fmt.Sprintf(
"not yet supported activity status '%s' for tenant %q", status, tenant.Name))
default:
if status == "" && allowEmpty {
continue
}
msgs = append(msgs, fmt.Sprintf(
"invalid activity status '%s' for tenant %q", status, tenant.Name))
}
}
if len(msgs) != 0 {
return uco.NewErrInvalidUserInput(strings.Join(msgs, ", "))
}
return nil
}
func (m *Manager) onAddTenants(ctx context.Context, class *models.Class, request AddTenantsPayload,
) error {
st := sharding.State{
Physical: make(map[string]sharding.Physical, len(request.Tenants)),
}
st.SetLocalName(m.clusterState.LocalName())
pairs := make([]KeyValuePair, 0, len(request.Tenants))
for _, p := range request.Tenants {
if _, ok := st.Physical[p.Name]; !ok {
p := st.AddPartition(p.Name, p.Nodes, p.Status)
data, err := json.Marshal(p)
if err != nil {
return fmt.Errorf("cannot marshal partition %s: %w", p.Name, err)
}
pairs = append(pairs, KeyValuePair{p.Name, data})
}
}
creates := make([]*migrate.CreateTenantPayload, 0, len(request.Tenants))
for _, p := range request.Tenants {
if st.IsLocalShard(p.Name) {
creates = append(creates, &migrate.CreateTenantPayload{
Name: p.Name,
Status: p.Status,
})
}
}
commit, err := m.migrator.NewTenants(ctx, class, creates)
if err != nil {
return fmt.Errorf("migrator.new_tenants: %w", err)
}
m.logger.
WithField("action", "schema.add_tenants").
Debug("saving updated schema to configuration store")
if err = m.repo.NewShards(ctx, class.Class, pairs); err != nil {
commit(false) // rollback adding new tenant
return err
}
commit(true) // commit new adding new tenant
m.schemaCache.LockGuard(func() {
ost := m.schemaCache.ShardingState[request.Class]
for name, p := range st.Physical {
if ost.Physical == nil {
m.schemaCache.ShardingState[request.Class].Physical = make(map[string]sharding.Physical)
}
ost.Physical[name] = p
}
})
return nil
}
// UpdateTenants is used to set activity status of tenants of a class.
//
// Class must exist and has partitioning enabled
func (m *Manager) UpdateTenants(ctx context.Context, principal *models.Principal,
class string, tenants []*models.Tenant,
) error {
if err := m.Authorizer.Authorize(principal, "update", tenantsPath); err != nil {
return err
}
validated, err := validateTenants(tenants)
if err != nil {
return err
}
if err := validateActivityStatuses(validated, false); err != nil {
return err
}
cls := m.getClassByName(class)
if cls == nil {
return fmt.Errorf("class %q: %w", class, ErrNotFound)
}
if !schema.MultiTenancyEnabled(cls) {
return fmt.Errorf("multi-tenancy is not enabled for class %q", class)
}
request := UpdateTenantsPayload{
Class: class,
Tenants: make([]TenantUpdate, len(tenants)),
}
for i, tenant := range tenants {
request.Tenants[i] = TenantUpdate{Name: tenant.Name, Status: tenant.ActivityStatus}
}
// open cluster-wide transaction
tx, err := m.cluster.BeginTransaction(ctx, updateTenants,
request, DefaultTxTTL)
if err != nil {
return fmt.Errorf("open cluster-wide transaction: %w", err)
}
if err := m.cluster.CommitWriteTransaction(ctx, tx); err != nil {
m.logger.WithError(err).Errorf("not every node was able to commit")
}
return m.onUpdateTenants(ctx, cls, request) // actual update
}
func (m *Manager) onUpdateTenants(ctx context.Context, class *models.Class, request UpdateTenantsPayload,
) error {
ssCopy := sharding.State{Physical: make(map[string]sharding.Physical)}
ssCopy.SetLocalName(m.clusterState.LocalName())
if err := m.schemaCache.RLockGuard(func() error {
ss, ok := m.schemaCache.ShardingState[class.Class]
if !ok {
return fmt.Errorf("sharding state for class '%s' not found", class.Class)
}
for _, tu := range request.Tenants {
physical, ok := ss.Physical[tu.Name]
if !ok {
return fmt.Errorf("tenant '%s' not found", tu.Name)
}
// skip if status does not change
if physical.ActivityStatus() == tu.Status {
continue
}
ssCopy.Physical[tu.Name] = physical.DeepCopy()
}
return nil
}); err != nil {
return err
}
schemaUpdates := make([]KeyValuePair, 0, len(ssCopy.Physical))
migratorUpdates := make([]*migrate.UpdateTenantPayload, 0, len(ssCopy.Physical))
for _, tu := range request.Tenants {
physical, ok := ssCopy.Physical[tu.Name]
if !ok { // not present due to status not changed, skip
continue
}
physical.Status = tu.Status
ssCopy.Physical[tu.Name] = physical
data, err := json.Marshal(physical)
if err != nil {
return fmt.Errorf("cannot marshal shard %s: %w", tu.Name, err)
}
schemaUpdates = append(schemaUpdates, KeyValuePair{tu.Name, data})
// skip if not local
if ssCopy.IsLocalShard(tu.Name) {
migratorUpdates = append(migratorUpdates, &migrate.UpdateTenantPayload{
Name: tu.Name,
Status: tu.Status,
})
}
}
commit, err := m.migrator.UpdateTenants(ctx, class, migratorUpdates)
if err != nil {
m.logger.WithField("action", "update_tenants").
WithField("class", request.Class).Error(err)
}
m.logger.
WithField("action", "schema.update_tenants").
WithField("n", len(request.Tenants)).Debugf("persist schema updates")
if err := m.repo.UpdateShards(ctx, class.Class, schemaUpdates); err != nil {
commit(false) // rollback update of tenants
return err
}
commit(true) // commit update of tenants
// update cache
m.schemaCache.LockGuard(func() {
if ss := m.schemaCache.ShardingState[request.Class]; ss != nil {
for name, physical := range ssCopy.Physical {
ss.Physical[name] = physical
}
}
})
return nil
}
// DeleteTenants is used to delete tenants of a class.
//
// Class must exist and has partitioning enabled
func (m *Manager) DeleteTenants(ctx context.Context, principal *models.Principal, class string, tenants []string) error {
if err := m.Authorizer.Authorize(principal, "delete", tenantsPath); err != nil {
return err
}
for i, name := range tenants {
if name == "" {
return fmt.Errorf("empty tenant name at index %d", i)
}
}
cls := m.getClassByName(class)
if cls == nil {
return fmt.Errorf("class %q: %w", class, ErrNotFound)
}
if !schema.MultiTenancyEnabled(cls) {
return fmt.Errorf("multi-tenancy is not enabled for class %q", class)
}
request := DeleteTenantsPayload{
Class: class,
Tenants: tenants,
}
// open cluster-wide transaction
tx, err := m.cluster.BeginTransaction(ctx, deleteTenants,
request, DefaultTxTTL)
if err != nil {
return fmt.Errorf("open cluster-wide transaction: %w", err)
}
if err := m.cluster.CommitWriteTransaction(ctx, tx); err != nil {
m.logger.WithError(err).Errorf("not every node was able to commit")
}
return m.onDeleteTenants(ctx, cls, request) // actual update
}
func (m *Manager) onDeleteTenants(ctx context.Context, class *models.Class, req DeleteTenantsPayload,
) error {
commit, err := m.migrator.DeleteTenants(ctx, class, req.Tenants)
if err != nil {
m.logger.WithField("action", "delete_tenants").
WithField("class", req.Class).Error(err)
}
m.logger.
WithField("action", "schema.delete_tenants").
WithField("n", len(req.Tenants)).Debugf("persist schema updates")
if err := m.repo.DeleteShards(ctx, class.Class, req.Tenants); err != nil {
commit(false) // rollback deletion of tenants
return err
}
commit(true) // commit deletion of tenants
// update cache
m.schemaCache.LockGuard(func() {
if ss := m.schemaCache.ShardingState[req.Class]; ss != nil {
for _, p := range req.Tenants {
ss.DeletePartition(p)
}
}
})
return nil
}
// GetTenants is used to get tenants of a class.
//
// Class must exist and has partitioning enabled
func (m *Manager) GetTenants(ctx context.Context, principal *models.Principal, class string) ([]*models.Tenant, error) {
if err := m.Authorizer.Authorize(principal, "get", tenantsPath); err != nil {
return nil, err
}
// validation
cls := m.getClassByName(class)
if cls == nil {
return nil, fmt.Errorf("class %q: %w", class, ErrNotFound)
}
if !schema.MultiTenancyEnabled(cls) {
return nil, fmt.Errorf("multi-tenancy is not enabled for class %q", class)
}
var tenants []*models.Tenant
m.schemaCache.RLockGuard(func() error {
if ss := m.schemaCache.ShardingState[cls.Class]; ss != nil {
tenants = make([]*models.Tenant, len(ss.Physical))
i := 0
for tenant := range ss.Physical {
tenants[i] = &models.Tenant{
Name: tenant,
ActivityStatus: schema.ActivityStatus(ss.Physical[tenant].Status),
}
i++
}
}
return nil
})
return tenants, nil
}
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