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dynconfig.go
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dynconfig.go
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/*
* Copyright 2020 The Dragonfly 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.
*/
//go:generate mockgen -destination mocks/dynconfig_mock.go -source dynconfig.go -package mocks
package config
import (
"context"
"encoding/json"
"errors"
"fmt"
"os"
"path/filepath"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/credentials/insecure"
healthpb "google.golang.org/grpc/health/grpc_health_v1"
"google.golang.org/grpc/resolver"
"google.golang.org/grpc/status"
managerv1 "d7y.io/api/pkg/apis/manager/v1"
logger "d7y.io/dragonfly/v2/internal/dflog"
dc "d7y.io/dragonfly/v2/internal/dynconfig"
"d7y.io/dragonfly/v2/manager/types"
"d7y.io/dragonfly/v2/pkg/net/ip"
healthclient "d7y.io/dragonfly/v2/pkg/rpc/health/client"
managerclient "d7y.io/dragonfly/v2/pkg/rpc/manager/client"
)
var (
// Cache filename.
cacheFileName = "scheduler"
// Notify observer interval.
watchInterval = 10 * time.Second
)
type DynconfigData struct {
Scheduler *managerv1.Scheduler
Applications []*managerv1.Application
}
type DynconfigInterface interface {
// GetResolveSeedPeerAddrs returns the dynamic schedulers resolve addrs.
GetResolveSeedPeerAddrs() ([]resolver.Address, error)
// GetApplications returns the applications config from manager.
GetApplications() ([]*managerv1.Application, error)
// GetSeedPeers returns the dynamic seed peers config from manager.
GetSeedPeers() ([]*managerv1.SeedPeer, error)
// GetSchedulerClusterConfig returns the scheduler cluster config.
GetSchedulerClusterConfig() (types.SchedulerClusterConfig, error)
// GetSchedulerClusterClientConfig returns the client config.
GetSchedulerClusterClientConfig() (types.SchedulerClusterClientConfig, error)
// Get returns the dynamic config from manager.
Get() (*DynconfigData, error)
// Refresh refreshes dynconfig in cache.
Refresh() error
// Register allows an instance to register itself to listen/observe events.
Register(Observer)
// Deregister allows an instance to remove itself from the collection of observers/listeners.
Deregister(Observer)
// Notify publishes new events to listeners.
Notify() error
// Serve the dynconfig listening service.
Serve() error
// Stop the dynconfig listening service.
Stop() error
}
type Observer interface {
// OnNotify allows an event to be published to interface implementations.
OnNotify(*DynconfigData)
}
type dynconfig struct {
dc.Dynconfig
observers map[Observer]struct{}
done chan struct{}
cachePath string
transportCredentials credentials.TransportCredentials
}
// DynconfigOption is a functional option for configuring the dynconfig.
type DynconfigOption func(d *dynconfig) error
// WithTransportCredentials returns a DialOption which configures a connection
// level security credentials (e.g., TLS/SSL).
func WithTransportCredentials(creds credentials.TransportCredentials) DynconfigOption {
return func(d *dynconfig) error {
d.transportCredentials = creds
return nil
}
}
// NewDynconfig returns a new dynconfig instence.
func NewDynconfig(rawManagerClient managerclient.Client, cacheDir string, cfg *Config, options ...DynconfigOption) (DynconfigInterface, error) {
cachePath := filepath.Join(cacheDir, cacheFileName)
d := &dynconfig{
observers: map[Observer]struct{}{},
done: make(chan struct{}),
cachePath: cachePath,
}
for _, opt := range options {
if err := opt(d); err != nil {
return nil, err
}
}
if rawManagerClient != nil {
client, err := dc.New(
newManagerClient(rawManagerClient, cfg),
cachePath,
cfg.DynConfig.RefreshInterval,
)
if err != nil {
return nil, err
}
d.Dynconfig = client
}
return d, nil
}
// GetResolveSeedPeerAddrs returns the dynamic schedulers resolve addrs.
func (d *dynconfig) GetResolveSeedPeerAddrs() ([]resolver.Address, error) {
seedPeers, err := d.GetSeedPeers()
if err != nil {
return nil, err
}
var (
addrs = map[string]bool{}
resolveAddrs []resolver.Address
)
for _, seedPeer := range seedPeers {
ip, ok := ip.FormatIP(seedPeer.Ip)
if !ok {
continue
}
addr := fmt.Sprintf("%s:%d", ip, seedPeer.Port)
dialOptions := []grpc.DialOption{}
if d.transportCredentials != nil {
dialOptions = append(dialOptions, grpc.WithTransportCredentials(d.transportCredentials))
} else {
dialOptions = append(dialOptions, grpc.WithTransportCredentials(insecure.NewCredentials()))
}
healthClient, err := healthclient.GetClient(context.Background(), addr, dialOptions...)
if err != nil {
logger.Errorf("get health client %s failed: %s", addr, err.Error())
continue
}
if err := healthClient.Check(context.Background(), &healthpb.HealthCheckRequest{}); err != nil {
logger.Errorf("seed peer address %s is unreachable: %s", addr, err.Error())
continue
}
if addrs[addr] {
continue
}
resolveAddrs = append(resolveAddrs, resolver.Address{
ServerName: seedPeer.Ip,
Addr: addr,
})
addrs[addr] = true
}
if len(resolveAddrs) == 0 {
return nil, errors.New("can not found available seed peer addresses")
}
return resolveAddrs, nil
}
// GetApplications returns the applications config from manager.
func (d *dynconfig) GetApplications() ([]*managerv1.Application, error) {
data, err := d.Get()
if err != nil {
return nil, err
}
return data.Applications, nil
}
// GetSeedPeers returns the dynamic seed peers config from manager.
func (d *dynconfig) GetSeedPeers() ([]*managerv1.SeedPeer, error) {
data, err := d.Get()
if err != nil {
return nil, err
}
return data.Scheduler.SeedPeers, nil
}
// GetSchedulerClusterConfig returns the scheduler cluster config.
func (d *dynconfig) GetSchedulerClusterConfig() (types.SchedulerClusterConfig, error) {
data, err := d.Get()
if err != nil {
return types.SchedulerClusterConfig{}, err
}
if data.Scheduler.SchedulerCluster == nil {
return types.SchedulerClusterConfig{}, errors.New("invalid scheduler cluster")
}
var config types.SchedulerClusterConfig
if err := json.Unmarshal(data.Scheduler.SchedulerCluster.Config, &config); err != nil {
return types.SchedulerClusterConfig{}, err
}
return config, nil
}
// GetSchedulerClusterClientConfig returns the client config.
func (d *dynconfig) GetSchedulerClusterClientConfig() (types.SchedulerClusterClientConfig, error) {
data, err := d.Get()
if err != nil {
return types.SchedulerClusterClientConfig{}, err
}
if data.Scheduler.SchedulerCluster == nil {
return types.SchedulerClusterClientConfig{}, errors.New("invalid scheduler cluster")
}
var config types.SchedulerClusterClientConfig
if err := json.Unmarshal(data.Scheduler.SchedulerCluster.ClientConfig, &config); err != nil {
return types.SchedulerClusterClientConfig{}, err
}
return config, nil
}
// Get the dynamic config from manager.
func (d *dynconfig) Get() (*DynconfigData, error) {
var config DynconfigData
if err := d.Unmarshal(&config); err != nil {
return nil, err
}
return &config, nil
}
// Refresh refreshes dynconfig in cache.
func (d *dynconfig) Refresh() error {
if err := d.Dynconfig.Refresh(); err != nil {
return err
}
if err := d.Notify(); err != nil {
return err
}
return nil
}
// Register allows an instance to register itself to listen/observe events.
func (d *dynconfig) Register(l Observer) {
d.observers[l] = struct{}{}
}
// Deregister allows an instance to remove itself from the collection of observers/listeners.
func (d *dynconfig) Deregister(l Observer) {
delete(d.observers, l)
}
// Notify publishes new events to listeners.
func (d *dynconfig) Notify() error {
config, err := d.Get()
if err != nil {
return err
}
for o := range d.observers {
o.OnNotify(config)
}
return nil
}
// Serve the dynconfig listening service.
func (d *dynconfig) Serve() error {
if err := d.Notify(); err != nil {
return err
}
tick := time.NewTicker(watchInterval)
for {
select {
case <-tick.C:
if err := d.Notify(); err != nil {
logger.Error("dynconfig notify failed", err)
}
case <-d.done:
return nil
}
}
}
// Stop the dynconfig listening service.
func (d *dynconfig) Stop() error {
close(d.done)
if err := os.Remove(d.cachePath); err != nil {
return err
}
return nil
}
// Manager client for dynconfig.
type managerClient struct {
managerclient.Client
config *Config
}
// New the manager client used by dynconfig.
func newManagerClient(client managerclient.Client, cfg *Config) dc.ManagerClient {
return &managerClient{
Client: client,
config: cfg,
}
}
func (mc *managerClient) Get() (any, error) {
getSchedulerResp, err := mc.GetScheduler(context.Background(), &managerv1.GetSchedulerRequest{
SourceType: managerv1.SourceType_SCHEDULER_SOURCE,
HostName: mc.config.Server.Host,
Ip: mc.config.Server.AdvertiseIP,
SchedulerClusterId: uint64(mc.config.Manager.SchedulerClusterID),
})
if err != nil {
return nil, err
}
listApplicationsResp, err := mc.ListApplications(context.Background(), &managerv1.ListApplicationsRequest{
SourceType: managerv1.SourceType_SCHEDULER_SOURCE,
HostName: mc.config.Server.Host,
Ip: mc.config.Server.AdvertiseIP,
})
if err != nil {
// TODO Compatible with old version manager.
if s, ok := status.FromError(err); ok && s.Code() == codes.Unimplemented {
return DynconfigData{
Scheduler: getSchedulerResp,
Applications: nil,
}, nil
}
return nil, err
}
return DynconfigData{
Scheduler: getSchedulerResp,
Applications: listApplicationsResp.Applications,
}, nil
}
// GetSeedPeerClusterConfigBySeedPeer returns the seed peer cluster config by seed peer.
func GetSeedPeerClusterConfigBySeedPeer(seedPeer *managerv1.SeedPeer) (types.SeedPeerClusterConfig, error) {
if seedPeer == nil {
return types.SeedPeerClusterConfig{}, errors.New("invalid seed peer")
}
if seedPeer.SeedPeerCluster == nil {
return types.SeedPeerClusterConfig{}, errors.New("invalid seed peer cluster")
}
var config types.SeedPeerClusterConfig
if err := json.Unmarshal(seedPeer.SeedPeerCluster.Config, &config); err != nil {
return types.SeedPeerClusterConfig{}, err
}
return config, nil
}