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factory.go
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factory.go
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// Copyright (c) 2017 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 nosql
import (
"sync"
"github.com/uber/cadence/common/config"
"github.com/uber/cadence/common/log"
p "github.com/uber/cadence/common/persistence"
)
type (
// Factory vends datastore implementations backed by cassandra
Factory struct {
sync.RWMutex
cfg config.ShardedNoSQL
clusterName string
logger log.Logger
execStoreFactory *executionStoreFactory
dc *p.DynamicConfiguration
}
executionStoreFactory struct {
logger log.Logger
shardedNosqlStore shardedNosqlStore
}
)
// NewFactory returns an instance of a factory object which can be used to create
// datastores that are backed by cassandra
func NewFactory(cfg config.ShardedNoSQL, clusterName string, logger log.Logger, dc *p.DynamicConfiguration) *Factory {
return &Factory{
cfg: cfg,
clusterName: clusterName,
logger: logger,
dc: dc,
}
}
// NewTaskStore returns a new task store
func (f *Factory) NewTaskStore() (p.TaskStore, error) {
return newNoSQLTaskStore(f.cfg, f.logger, f.dc)
}
// NewShardStore returns a new shard store
func (f *Factory) NewShardStore() (p.ShardStore, error) {
return newNoSQLShardStore(f.cfg, f.clusterName, f.logger, f.dc)
}
// NewHistoryStore returns a new history store
func (f *Factory) NewHistoryStore() (p.HistoryStore, error) {
return newNoSQLHistoryStore(f.cfg, f.logger, f.dc)
}
// NewDomainStore returns a metadata store that understands only v2
func (f *Factory) NewDomainStore() (p.DomainStore, error) {
return newNoSQLDomainStore(f.cfg, f.clusterName, f.logger, f.dc)
}
// NewExecutionStore returns an ExecutionStore for a given shardID
func (f *Factory) NewExecutionStore(shardID int) (p.ExecutionStore, error) {
factory, err := f.executionStoreFactory()
if err != nil {
return nil, err
}
return factory.new(shardID)
}
// NewVisibilityStore returns a visibility store
func (f *Factory) NewVisibilityStore(sortByCloseTime bool) (p.VisibilityStore, error) {
return newNoSQLVisibilityStore(sortByCloseTime, f.cfg, f.logger, f.dc)
}
// NewQueue returns a new queue backed by cassandra
func (f *Factory) NewQueue(queueType p.QueueType) (p.Queue, error) {
return newNoSQLQueueStore(f.cfg, f.logger, queueType, f.dc)
}
// NewConfigStore returns a new config store
func (f *Factory) NewConfigStore() (p.ConfigStore, error) {
return NewNoSQLConfigStore(f.cfg, f.logger, f.dc)
}
// Close closes the factory
func (f *Factory) Close() {
f.Lock()
defer f.Unlock()
if f.execStoreFactory != nil {
f.execStoreFactory.close()
}
}
func (f *Factory) executionStoreFactory() (*executionStoreFactory, error) {
f.RLock()
if f.execStoreFactory != nil {
f.RUnlock()
return f.execStoreFactory, nil
}
f.RUnlock()
f.Lock()
defer f.Unlock()
if f.execStoreFactory != nil {
return f.execStoreFactory, nil
}
factory, err := newExecutionStoreFactory(f.cfg, f.logger, f.dc)
if err != nil {
return nil, err
}
f.execStoreFactory = factory
return f.execStoreFactory, nil
}
// newExecutionStoreFactory is used to create an instance of ExecutionStoreFactory implementation
func newExecutionStoreFactory(
cfg config.ShardedNoSQL,
logger log.Logger,
dc *p.DynamicConfiguration,
) (*executionStoreFactory, error) {
s, err := newShardedNosqlStore(cfg, logger, dc)
if err != nil {
return nil, err
}
return &executionStoreFactory{
logger: logger,
shardedNosqlStore: *s,
}, nil
}
func (f *executionStoreFactory) close() {
f.shardedNosqlStore.Close()
}
// new implements ExecutionStoreFactory interface
func (f *executionStoreFactory) new(shardID int) (p.ExecutionStore, error) {
storeShard, err := f.shardedNosqlStore.GetStoreShardByHistoryShard(shardID)
if err != nil {
return nil, err
}
pmgr, err := NewExecutionStore(shardID, storeShard.db, f.logger)
if err != nil {
return nil, err
}
return pmgr, nil
}