135 lines
4.0 KiB
Go
135 lines
4.0 KiB
Go
/*
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Copyright 2022 The Dapr Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package sqlite
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import (
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"context"
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"reflect"
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"github.com/dapr/components-contrib/metadata"
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"github.com/dapr/components-contrib/state"
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"github.com/dapr/kit/logger"
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)
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// SQLite Database state store.
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type SQLiteStore struct {
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logger logger.Logger
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dbaccess DBAccess
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}
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// NewSQLiteStateStore creates a new instance of the SQLite state store.
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func NewSQLiteStateStore(logger logger.Logger) state.Store {
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dba := newSqliteDBAccess(logger)
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return newSQLiteStateStore(logger, dba)
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}
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// newSQLiteStateStore creates a newSQLiteStateStore instance of an Sqlite state store.
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// This unexported constructor allows injecting a dbAccess instance for unit testing.
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func newSQLiteStateStore(logger logger.Logger, dba DBAccess) *SQLiteStore {
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return &SQLiteStore{
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logger: logger,
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dbaccess: dba,
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}
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}
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// Init initializes the Sql server state store.
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func (s *SQLiteStore) Init(ctx context.Context, metadata state.Metadata) error {
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return s.dbaccess.Init(ctx, metadata)
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}
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func (s SQLiteStore) GetComponentMetadata() map[string]string {
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metadataStruct := sqliteMetadataStruct{}
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metadataInfo := map[string]string{}
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metadata.GetMetadataInfoFromStructType(reflect.TypeOf(metadataStruct), &metadataInfo)
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return metadataInfo
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}
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// Features returns the features available in this state store.
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func (s *SQLiteStore) Features() []state.Feature {
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return []state.Feature{
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state.FeatureETag,
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state.FeatureTransactional,
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}
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}
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func (s *SQLiteStore) Ping(ctx context.Context) error {
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return s.dbaccess.Ping(ctx)
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}
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// Delete removes an entity from the store.
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func (s *SQLiteStore) Delete(ctx context.Context, req *state.DeleteRequest) error {
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return s.dbaccess.Delete(ctx, req)
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}
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// BulkDelete removes multiple entries from the store.
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func (s *SQLiteStore) BulkDelete(ctx context.Context, req []state.DeleteRequest) error {
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ops := make([]state.TransactionalStateOperation, len(req))
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for i, r := range req {
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ops[i] = state.TransactionalStateOperation{
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Operation: state.Delete,
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Request: r,
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}
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}
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return s.dbaccess.ExecuteMulti(ctx, ops)
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}
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// Get returns an entity from store.
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func (s *SQLiteStore) Get(ctx context.Context, req *state.GetRequest) (*state.GetResponse, error) {
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return s.dbaccess.Get(ctx, req)
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}
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// BulkGet performs a bulks get operations.
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func (s *SQLiteStore) BulkGet(ctx context.Context, req []state.GetRequest) (bool, []state.BulkGetResponse, error) {
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// TODO: replace with ExecuteMulti for performance.
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return false, nil, nil
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}
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// Set adds/updates an entity on store.
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func (s *SQLiteStore) Set(ctx context.Context, req *state.SetRequest) error {
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return s.dbaccess.Set(ctx, req)
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}
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// BulkSet adds/updates multiple entities on store.
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func (s *SQLiteStore) BulkSet(ctx context.Context, req []state.SetRequest) error {
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ops := make([]state.TransactionalStateOperation, len(req))
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for i, r := range req {
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ops[i] = state.TransactionalStateOperation{
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Operation: state.Upsert,
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Request: r,
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}
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}
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return s.dbaccess.ExecuteMulti(ctx, ops)
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}
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// Multi handles multiple transactions. Implements TransactionalStore.
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func (s *SQLiteStore) Multi(ctx context.Context, request *state.TransactionalStateRequest) error {
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return s.dbaccess.ExecuteMulti(ctx, request.Operations)
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}
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// Close implements io.Closer.
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func (s *SQLiteStore) Close() error {
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if s.dbaccess != nil {
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return s.dbaccess.Close()
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}
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return nil
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}
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// Returns the dbaccess property.
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// This method is used in tests.
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func (s *SQLiteStore) GetDBAccess() *sqliteDBAccess {
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return s.dbaccess.(*sqliteDBAccess)
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}
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