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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 etcd
import (
"os"
"time"
"github.com/m3db/m3/src/cluster/client"
"github.com/m3db/m3/src/cluster/services"
"github.com/m3db/m3/src/x/instrument"
)
// ClusterConfig is the config for a zoned etcd cluster.
type ClusterConfig struct {
Zone string `yaml:"zone"`
Endpoints []string `yaml:"endpoints"`
KeepAlive *KeepAliveConfig `yaml:"keepAlive"`
TLS *TLSConfig `yaml:"tls"`
AutoSyncInterval time.Duration `yaml:"autoSyncInterval"`
}
// NewCluster creates a new Cluster.
func (c ClusterConfig) NewCluster() Cluster {
keepAliveOpts := NewKeepAliveOptions()
if c.KeepAlive != nil {
keepAliveOpts = c.KeepAlive.NewOptions()
}
return NewCluster().
SetZone(c.Zone).
SetEndpoints(c.Endpoints).
SetKeepAliveOptions(keepAliveOpts).
SetTLSOptions(c.TLS.newOptions()).
SetAutoSyncInterval(c.AutoSyncInterval)
}
// TLSConfig is the config for TLS.
type TLSConfig struct {
CrtPath string `yaml:"crtPath"`
CACrtPath string `yaml:"caCrtPath"`
KeyPath string `yaml:"keyPath"`
}
func (c *TLSConfig) newOptions() TLSOptions {
opts := NewTLSOptions()
if c == nil {
return opts
}
return opts.
SetCrtPath(c.CrtPath).
SetKeyPath(c.KeyPath).
SetCACrtPath(c.CACrtPath)
}
// KeepAliveConfig configures keepAlive behavior.
type KeepAliveConfig struct {
Enabled bool `yaml:"enabled"`
Period time.Duration `yaml:"period"`
Jitter time.Duration `yaml:"jitter"`
Timeout time.Duration `yaml:"timeout"`
}
// NewOptions constructs options based on the config.
func (c *KeepAliveConfig) NewOptions() KeepAliveOptions {
return NewKeepAliveOptions().
SetKeepAliveEnabled(c.Enabled).
SetKeepAlivePeriod(c.Period).
SetKeepAlivePeriodMaxJitter(c.Jitter).
SetKeepAliveTimeout(c.Timeout)
}
// Configuration is for config service client.
type Configuration struct {
Zone string `yaml:"zone"`
Env string `yaml:"env"`
Service string `yaml:"service" validate:"nonzero"`
CacheDir string `yaml:"cacheDir"`
ETCDClusters []ClusterConfig `yaml:"etcdClusters"`
SDConfig services.Configuration `yaml:"m3sd"`
WatchWithRevision int64 `yaml:"watchWithRevision"`
NewDirectoryMode *os.FileMode `yaml:"newDirectoryMode"`
}
// NewClient creates a new config service client.
func (cfg Configuration) NewClient(iopts instrument.Options) (client.Client, error) {
return NewConfigServiceClient(cfg.NewOptions().SetInstrumentOptions(iopts))
}
// NewOptions returns a new Options.
func (cfg Configuration) NewOptions() Options {
opts := NewOptions().
SetZone(cfg.Zone).
SetEnv(cfg.Env).
SetService(cfg.Service).
SetCacheDir(cfg.CacheDir).
SetClusters(cfg.etcdClusters()).
SetServicesOptions(cfg.SDConfig.NewOptions()).
SetWatchWithRevision(cfg.WatchWithRevision)
if v := cfg.NewDirectoryMode; v != nil {
opts = opts.SetNewDirectoryMode(*v)
} else {
opts = opts.SetNewDirectoryMode(defaultDirectoryMode)
}
return opts
}
func (cfg Configuration) etcdClusters() []Cluster {
res := make([]Cluster, len(cfg.ETCDClusters))
for i, c := range cfg.ETCDClusters {
res[i] = c.NewCluster()
}
return res
}