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// Copyright 2021 Northern.tech AS
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package store
import (
"context"
"strings"
"go.mongodb.org/mongo-driver/bson"
"github.com/mendersoftware/go-lib-micro/identity"
mdoc "github.com/mendersoftware/go-lib-micro/mongo/doc"
v1 "github.com/mendersoftware/go-lib-micro/store"
)
const FieldTenantID = "tenant_id"
// WithTenantID adds the tenant_id field to a bson document using the value extracted
// from the identity of the context
func WithTenantID(ctx context.Context, doc interface{}) bson.D {
var (
tenantID string
res bson.D
)
identity := identity.FromContext(ctx)
if identity != nil {
tenantID = identity.Tenant
}
tenantElem := bson.E{Key: FieldTenantID, Value: tenantID}
switch v := doc.(type) {
case map[string]interface{}:
res = make(bson.D, 0, len(v)+1)
for k, v := range v {
res = append(res, bson.E{Key: k, Value: v})
}
case bson.M:
res = make(bson.D, 0, len(v)+1)
for k, v := range v {
res = append(res, bson.E{Key: k, Value: v})
}
case bson.D:
res = make(bson.D, len(v), len(v)+1)
copy(res, v)
case bson.Marshaler:
b, err := v.MarshalBSON()
if err != nil {
return nil
}
err = bson.Unmarshal(b, &res)
if err != nil {
return nil
}
default:
return mdoc.DocumentFromStruct(v, tenantElem)
}
res = append(res, tenantElem)
return res
}
// ArrayWithTenantID adds the tenant_id field to an array of bson documents
// using the value extracted from the identity of the context
func ArrayWithTenantID(ctx context.Context, doc bson.A) bson.A {
res := bson.A{}
for _, item := range doc {
res = append(res, WithTenantID(ctx, item))
}
return res
}
// DbFromContext generates database name using tenant field from identity extracted
// from context and original database name
func DbFromContext(ctx context.Context, origDbName string) string {
return origDbName
}
// IsTenantDb returns a function of `TenantDbMatchFunc` that can be used for
// checking if database has a tenant DB name format
func IsTenantDb(baseDb string) v1.TenantDbMatchFunc {
prefix := baseDb + "-"
return func(name string) bool {
return strings.HasPrefix(name, prefix)
}
}
// TenantFromDbName attempts to extract tenant ID from provided tenant DB name.
// Returns extracted tenant ID or an empty string.
func TenantFromDbName(dbName string, baseDb string) string {
noBase := strings.TrimPrefix(dbName, baseDb+"-")
if noBase == dbName {
return ""
}
return noBase
}
// DbNameForTenant composes tenant's db name.
func DbNameForTenant(tenantId string, baseDb string) string {
return baseDb
}
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