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persistence.go
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persistence.go
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// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package config
import (
"fmt"
"reflect"
"strings"
"github.com/gocql/gocql"
)
const (
// StoreTypeSQL refers to sql based storage as persistence store
StoreTypeSQL = "sql"
// StoreTypeNoSQL refers to nosql based storage as persistence store
StoreTypeNoSQL = "nosql"
)
// DefaultStoreType returns the storeType for the default persistence store
func (c *Persistence) DefaultStoreType() string {
if c.DataStores[c.DefaultStore].SQL != nil {
return StoreTypeSQL
}
return StoreTypeNoSQL
}
// Validate validates the persistence config
func (c *Persistence) Validate() error {
stores := []string{c.DefaultStore, c.VisibilityStore}
for _, st := range stores {
ds, ok := c.DataStores[st]
if !ok {
return fmt.Errorf("persistence config: missing config for datastore %v", st)
}
if ds.SQL == nil && ds.Cassandra == nil {
return fmt.Errorf("persistence config: datastore %v: must provide config for one of cassandra or sql stores", st)
}
if ds.SQL != nil && ds.Cassandra != nil {
return fmt.Errorf("persistence config: datastore %v: only one of SQL or cassandra can be specified", st)
}
if ds.SQL != nil && ds.SQL.TaskScanPartitions == 0 {
ds.SQL.TaskScanPartitions = 1
}
if ds.Cassandra != nil {
if err := ds.Cassandra.validate(); err != nil {
return err
}
}
}
return nil
}
// IsAdvancedVisibilityConfigExist returns whether user specified advancedVisibilityStore in config
func (c *Persistence) IsAdvancedVisibilityConfigExist() bool {
return len(c.AdvancedVisibilityStore) != 0
}
// GetConsistency returns the gosql.Consistency setting from the configuration for the given store type
func (c *CassandraStoreConsistency) GetConsistency() gocql.Consistency {
return gocql.ParseConsistency(c.getConsistencySettings().Consistency)
}
// GetSerialConsistency returns the gosql.SerialConsistency setting from the configuration for the store
func (c *CassandraStoreConsistency) GetSerialConsistency() gocql.SerialConsistency {
res, err := parseSerialConsistency(c.getConsistencySettings().SerialConsistency)
if err != nil {
panic(fmt.Sprintf("unable to decode cassandra serial consistency: %v", err))
}
return res
}
func (c *CassandraStoreConsistency) getConsistencySettings() *CassandraConsistencySettings {
return ensureStoreConsistencyNotNil(c).Default
}
func ensureStoreConsistencyNotNil(c *CassandraStoreConsistency) *CassandraStoreConsistency {
if c == nil {
c = &CassandraStoreConsistency{}
}
if c.Default == nil {
c.Default = &CassandraConsistencySettings{}
}
if c.Default.Consistency == "" {
c.Default.Consistency = "LOCAL_QUORUM"
}
if c.Default.SerialConsistency == "" {
c.Default.SerialConsistency = "LOCAL_SERIAL"
}
return c
}
func (c *Cassandra) validate() error {
return c.Consistency.validate()
}
func (c *CassandraStoreConsistency) validate() error {
if c == nil {
return nil
}
v := reflect.ValueOf(*c)
for i := 0; i < v.NumField(); i++ {
s, ok := v.Field(i).Interface().(*CassandraConsistencySettings)
if ok {
if err := s.validate(); err != nil {
return err
}
}
}
return nil
}
func (c *CassandraConsistencySettings) validate() error {
if c == nil {
return nil
}
if c.Consistency != "" {
_, err := gocql.ParseConsistencyWrapper(c.Consistency)
if err != nil {
return fmt.Errorf("bad cassandra consistency: %v", err)
}
}
if c.SerialConsistency != "" {
_, err := parseSerialConsistency(c.SerialConsistency)
if err != nil {
return fmt.Errorf("bad cassandra serial consistency: %v", err)
}
}
return nil
}
func parseSerialConsistency(serialConsistency string) (gocql.SerialConsistency, error) {
var s gocql.SerialConsistency
err := s.UnmarshalText([]byte(strings.ToUpper(serialConsistency)))
return s, err
}