109 lines
3.1 KiB
Go
109 lines
3.1 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 cockroachdb
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import (
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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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// CockroachDB state store.
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type CockroachDB 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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// New creates a new instance of CockroachDB state store.
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func New(logger logger.Logger) state.Store {
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dba := newCockroachDBAccess(logger)
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return internalNew(logger, dba)
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}
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// internalNew creates a new instance of a CockroachDB state store.
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// This unexported constructor allows injecting a dbAccess instance for unit testing.
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func internalNew(logger logger.Logger, dba dbAccess) *CockroachDB {
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return &CockroachDB{
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features: []state.Feature{state.FeatureETag, state.FeatureTransactional, state.FeatureQueryAPI},
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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 CockroachDB state store.
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func (c *CockroachDB) Init(metadata state.Metadata) error {
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return c.dbaccess.Init(metadata)
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}
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// Features returns the features available in this state store.
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func (c *CockroachDB) Features() []state.Feature {
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return c.features
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}
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// Delete removes an entity from the store.
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func (c *CockroachDB) Delete(req *state.DeleteRequest) error {
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return c.dbaccess.Delete(req)
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}
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// Get returns an entity from store.
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func (c *CockroachDB) Get(req *state.GetRequest) (*state.GetResponse, error) {
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return c.dbaccess.Get(req)
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}
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// Set adds/updates an entity on store.
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func (c *CockroachDB) Set(req *state.SetRequest) error {
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return c.dbaccess.Set(req)
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}
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// Ping checks if database is available.
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func (c *CockroachDB) Ping() error {
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return c.dbaccess.Ping()
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}
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// BulkDelete removes multiple entries from the store.
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func (c *CockroachDB) BulkDelete(req []state.DeleteRequest) error {
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return c.dbaccess.BulkDelete(req)
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}
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// BulkGet performs a bulks get operations.
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func (c *CockroachDB) 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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// BulkSet adds/updates multiple entities on store.
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func (c *CockroachDB) BulkSet(req []state.SetRequest) error {
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return c.dbaccess.BulkSet(req)
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}
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// Multi handles multiple transactions. Implements TransactionalStore.
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func (c *CockroachDB) Multi(request *state.TransactionalStateRequest) error {
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return c.dbaccess.ExecuteMulti(request)
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}
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// Query executes a query against store.
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func (c *CockroachDB) Query(req *state.QueryRequest) (*state.QueryResponse, error) {
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return c.dbaccess.Query(req)
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}
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// Close implements io.Closer.
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func (c *CockroachDB) Close() error {
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if c.dbaccess != nil {
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return c.dbaccess.Close()
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}
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return nil
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}
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