141 lines
4.0 KiB
Go
141 lines
4.0 KiB
Go
/*
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Copyright 2021 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 oracledatabase
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import (
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"fmt"
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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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// Oracle Database state store.
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type OracleDatabase struct {
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features []state.Feature
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logger logger.Logger
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dbaccess dbAccess
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}
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// NewOracleDatabaseStateStore creates a new instance of OracleDatabase state store.
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func NewOracleDatabaseStateStore(logger logger.Logger) state.Store {
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dba := newOracleDatabaseAccess(logger)
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return newOracleDatabaseStateStore(logger, dba)
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}
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// newOracleDatabaseStateStore creates a newOracleDatabaseStateStore instance of an OracleDatabase state store.
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// This unexported constructor allows injecting a dbAccess instance for unit testing.
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func newOracleDatabaseStateStore(logger logger.Logger, dba dbAccess) *OracleDatabase {
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return &OracleDatabase{
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features: []state.Feature{state.FeatureETag, state.FeatureTransactional},
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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 (o *OracleDatabase) Init(metadata state.Metadata) error {
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return o.dbaccess.Init(metadata)
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}
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func (o *OracleDatabase) Ping() error {
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return o.dbaccess.Ping()
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}
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// Features returns the features available in this state store.
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func (o *OracleDatabase) Features() []state.Feature {
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return o.features
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}
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// Delete removes an entity from the store.
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func (o *OracleDatabase) Delete(req *state.DeleteRequest) error {
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return o.dbaccess.Delete(req)
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}
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// BulkDelete removes multiple entries from the store.
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func (o *OracleDatabase) BulkDelete(req []state.DeleteRequest) error {
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return o.dbaccess.ExecuteMulti(nil, req)
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}
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// Get returns an entity from store.
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func (o *OracleDatabase) Get(req *state.GetRequest) (*state.GetResponse, error) {
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return o.dbaccess.Get(req)
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}
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// BulkGet performs a bulks get operations.
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func (o *OracleDatabase) BulkGet(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 (o *OracleDatabase) Set(req *state.SetRequest) error {
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return o.dbaccess.Set(req)
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}
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// BulkSet adds/updates multiple entities on store.
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func (o *OracleDatabase) BulkSet(req []state.SetRequest) error {
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return o.dbaccess.ExecuteMulti(req, nil)
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}
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// Multi handles multiple transactions. Implements TransactionalStore.
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func (o *OracleDatabase) Multi(request *state.TransactionalStateRequest) error {
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var deletes []state.DeleteRequest
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var sets []state.SetRequest
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for _, req := range request.Operations {
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switch req.Operation {
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case state.Upsert:
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if setReq, ok := req.Request.(state.SetRequest); ok {
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sets = append(sets, setReq)
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} else {
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return fmt.Errorf("expecting set request")
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}
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case state.Delete:
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if delReq, ok := req.Request.(state.DeleteRequest); ok {
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deletes = append(deletes, delReq)
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} else {
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return fmt.Errorf("expecting delete request")
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}
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default:
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return fmt.Errorf("unsupported operation: %s", req.Operation)
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}
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}
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if len(sets) > 0 || len(deletes) > 0 {
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return o.dbaccess.ExecuteMulti(sets, deletes)
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}
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return nil
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}
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// Close implements io.Closer.
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func (o *OracleDatabase) Close() error {
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if o.dbaccess != nil {
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return o.dbaccess.Close()
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}
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return nil
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}
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func (o *OracleDatabase) GetComponentMetadata() map[string]string {
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metadataStruct := oracleDatabaseMetadata{}
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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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