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config.go
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/
config.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 config
import (
"errors"
"time"
"github.com/m3db/m3/src/cluster/client/etcd"
clusterkv "github.com/m3db/m3/src/cluster/kv"
"github.com/m3db/m3/src/ctl/auth"
r2store "github.com/m3db/m3/src/ctl/service/r2/store"
r2kv "github.com/m3db/m3/src/ctl/service/r2/store/kv"
"github.com/m3db/m3/src/ctl/service/r2/store/stub"
"github.com/m3db/m3/src/metrics/rules"
ruleskv "github.com/m3db/m3/src/metrics/rules/store/kv"
"github.com/m3db/m3/src/metrics/rules/validator"
"github.com/m3db/m3/src/x/instrument"
"github.com/m3db/m3/src/x/log"
)
var (
errKVConfigRequired = errors.New("must provide kv configuration if not using stub store")
)
// Configuration is the global configuration for r2ctl.
type Configuration struct {
// Logging configuration.
Logging log.Configuration `yaml:"logging"`
// HTTP server configuration.
HTTP serverConfig `yaml:"http"`
// Metrics configuration.
Metrics instrument.MetricsConfiguration `yaml:"metrics"`
// Store configuration.
Store r2StoreConfiguration `yaml:"store"`
// Simple Auth Config.
Auth *auth.SimpleAuthConfig `yaml:"auth"`
}
// r2StoreConfiguration has all the fields necessary for an R2 store.
type r2StoreConfiguration struct {
// Stub means use the stub store.
Stub bool `yaml:"stub"`
// KV is the configuration for the etcd backed implementation of the kv store.
KV *kvStoreConfig `yaml:"kv,omitempty"`
}
// NewR2Store creates a new R2 store.
func (c r2StoreConfiguration) NewR2Store(instrumentOpts instrument.Options) (r2store.Store, error) {
if c.Stub {
return stub.NewStore(instrumentOpts)
}
if c.KV == nil {
return nil, errKVConfigRequired
}
return c.KV.NewStore(instrumentOpts)
}
// kvStoreConfig is the configuration for the KV backed implementation of the R2 store.
type kvStoreConfig struct {
// KVClient configures the client for key value store.
KVClient *etcd.Configuration `yaml:"kvClient" validate:"nonzero"`
// KV configuration for the rules store.
KVConfig clusterkv.OverrideConfiguration `yaml:"kvConfig"`
// NamespacesKey is KV key associated with namespaces..
NamespacesKey string `yaml:"namespacesKey" validate:"nonzero"`
// RuleSet key format.
RuleSetKeyFmt string `yaml:"ruleSetKeyFmt" validate:"nonzero"`
// Propagation delay for rule updates.
PropagationDelay time.Duration `yaml:"propagationDelay" validate:"nonzero"`
// Validation configuration.
Validation *validator.Configuration `yaml:"validation"`
}
// NewStore creates a new KV backed R2 store.
func (c kvStoreConfig) NewStore(instrumentOpts instrument.Options) (r2store.Store, error) {
// Create rules store.
kvClient, err := c.KVClient.NewClient(instrumentOpts)
if err != nil {
return nil, err
}
kvOpts, err := c.KVConfig.NewOverrideOptions()
if err != nil {
return nil, err
}
kvStore, err := kvClient.TxnStore(kvOpts)
if err != nil {
return nil, err
}
var validator rules.Validator
if c.Validation != nil {
validator, err = c.Validation.NewValidator(kvClient)
if err != nil {
return nil, err
}
}
rulesStoreOpts := ruleskv.NewStoreOptions(c.NamespacesKey, c.RuleSetKeyFmt, validator)
rulesStore := ruleskv.NewStore(kvStore, rulesStoreOpts)
// Create kv store.
r2StoreOpts := r2kv.NewStoreOptions().
SetInstrumentOptions(instrumentOpts).
SetRuleUpdatePropagationDelay(c.PropagationDelay).
SetValidator(validator)
return r2kv.NewStore(rulesStore, r2StoreOpts), nil
}