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tablestore.go
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/
tablestore.go
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/*
Copyright 2021 The Dapr Authors
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 tablestore
import (
"context"
"reflect"
"github.com/aliyun/aliyun-tablestore-go-sdk/tablestore"
jsoniter "github.com/json-iterator/go"
"github.com/dapr/components-contrib/metadata"
"github.com/dapr/components-contrib/state"
"github.com/dapr/kit/logger"
"github.com/dapr/kit/ptr"
)
const (
stateKey = "stateKey"
stateValue = "stateValue"
sateEtag = "sateEtag"
)
type AliCloudTableStore struct {
state.BulkStore
logger logger.Logger
client tablestore.TableStoreApi
metadata tablestoreMetadata
features []state.Feature
}
type tablestoreMetadata struct {
Endpoint string `json:"endpoint"`
AccessKeyID string `json:"accessKeyID"`
AccessKey string `json:"accessKey"`
InstanceName string `json:"instanceName"`
TableName string `json:"tableName"`
}
func NewAliCloudTableStore(logger logger.Logger) state.Store {
s := &AliCloudTableStore{
features: []state.Feature{state.FeatureETag},
logger: logger,
}
s.BulkStore = state.NewDefaultBulkStore(s)
return s
}
func (s *AliCloudTableStore) Init(_ context.Context, metadata state.Metadata) error {
m, err := s.parse(metadata)
if err != nil {
return err
}
s.metadata = *m
s.client = tablestore.NewClient(m.Endpoint, m.InstanceName, m.AccessKeyID, m.AccessKey)
return nil
}
func (s *AliCloudTableStore) Features() []state.Feature {
return s.features
}
func (s *AliCloudTableStore) Get(ctx context.Context, req *state.GetRequest) (*state.GetResponse, error) {
criteria := &tablestore.SingleRowQueryCriteria{
PrimaryKey: s.primaryKey(req.Key),
TableName: s.metadata.TableName,
MaxVersion: 1,
}
rowGetReq := &tablestore.GetRowRequest{
SingleRowQueryCriteria: criteria,
}
resp, err := s.client.GetRow(rowGetReq)
if err != nil {
return nil, err
}
getResp := s.getResp(resp.Columns)
return getResp, nil
}
func (s *AliCloudTableStore) getResp(columns []*tablestore.AttributeColumn) *state.GetResponse {
getResp := &state.GetResponse{}
for _, column := range columns {
if column.ColumnName == stateValue {
getResp.Data = unmarshal(column.Value)
} else if column.ColumnName == sateEtag {
getResp.ETag = ptr.Of(column.Value.(string))
}
}
return getResp
}
// Options are ignored because this component requests all values in a single operation.
func (s *AliCloudTableStore) BulkGet(ctx context.Context, reqs []state.GetRequest, _ state.BulkGetOpts) ([]state.BulkGetResponse, error) {
// "len == 0": empty request, directly return empty response
if len(reqs) == 0 {
return []state.BulkGetResponse{}, nil
}
mqCriteria := &tablestore.MultiRowQueryCriteria{
TableName: s.metadata.TableName,
MaxVersion: 1,
}
for _, req := range reqs {
mqCriteria.AddRow(s.primaryKey(req.Key))
}
batchGetReq := &tablestore.BatchGetRowRequest{
MultiRowQueryCriteria: []*tablestore.MultiRowQueryCriteria{
mqCriteria,
},
}
batchGetResp, err := s.client.BatchGetRow(batchGetReq)
if err != nil {
return nil, err
}
responseList := make([]state.BulkGetResponse, len(batchGetResp.TableToRowsResult[mqCriteria.TableName]))
for i, row := range batchGetResp.TableToRowsResult[mqCriteria.TableName] {
resp := s.getResp(row.Columns)
responseList[i] = state.BulkGetResponse{
Data: resp.Data,
ETag: resp.ETag,
Key: row.PrimaryKey.PrimaryKeys[0].Value.(string),
}
}
return responseList, nil
}
func (s *AliCloudTableStore) Set(ctx context.Context, req *state.SetRequest) error {
change := s.updateRowChange(req)
request := &tablestore.UpdateRowRequest{
UpdateRowChange: change,
}
_, err := s.client.UpdateRow(request)
return err
}
func (s *AliCloudTableStore) updateRowChange(req *state.SetRequest) *tablestore.UpdateRowChange {
change := &tablestore.UpdateRowChange{
PrimaryKey: s.primaryKey(req.Key),
TableName: s.metadata.TableName,
}
value, _ := marshal(req.Value)
change.PutColumn(stateValue, value)
if req.HasETag() {
change.PutColumn(sateEtag, *req.ETag)
}
change.SetCondition(tablestore.RowExistenceExpectation_IGNORE) //nolint:nosnakecase
return change
}
func marshal(value interface{}) ([]byte, error) {
v, _ := jsoniter.MarshalToString(value)
return []byte(v), nil
}
func unmarshal(val interface{}) []byte {
var output string
jsoniter.UnmarshalFromString(string(val.([]byte)), &output)
return []byte(output)
}
func (s *AliCloudTableStore) Delete(ctx context.Context, req *state.DeleteRequest) error {
change := s.deleteRowChange(req)
deleteRowReq := &tablestore.DeleteRowRequest{
DeleteRowChange: change,
}
_, err := s.client.DeleteRow(deleteRowReq)
return err
}
func (s *AliCloudTableStore) deleteRowChange(req *state.DeleteRequest) *tablestore.DeleteRowChange {
change := &tablestore.DeleteRowChange{
PrimaryKey: s.primaryKey(req.Key),
TableName: s.metadata.TableName,
}
change.SetCondition(tablestore.RowExistenceExpectation_EXPECT_EXIST) //nolint:nosnakecase
return change
}
func (s *AliCloudTableStore) parse(meta state.Metadata) (*tablestoreMetadata, error) {
var m tablestoreMetadata
err := metadata.DecodeMetadata(meta.Properties, &m)
return &m, err
}
func (s *AliCloudTableStore) primaryKey(key string) *tablestore.PrimaryKey {
pk := &tablestore.PrimaryKey{}
pk.AddPrimaryKeyColumn(stateKey, key)
return pk
}
func (s *AliCloudTableStore) GetComponentMetadata() map[string]string {
metadataStruct := tablestoreMetadata{}
metadataInfo := map[string]string{}
metadata.GetMetadataInfoFromStructType(reflect.TypeOf(metadataStruct), &metadataInfo, metadata.StateStoreType)
return metadataInfo
}