/
client_v2.go
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/
client_v2.go
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/*
* Copyright 2023 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/client_v2_mock.go -source client_v2.go -package mocks
package client
import (
"context"
grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
grpc_zap "github.com/grpc-ecosystem/go-grpc-middleware/logging/zap"
grpc_retry "github.com/grpc-ecosystem/go-grpc-middleware/retry"
grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
"golang.org/x/sync/errgroup"
"google.golang.org/grpc"
"google.golang.org/grpc/balancer"
commonv2 "d7y.io/api/v2/pkg/apis/common/v2"
schedulerv2 "d7y.io/api/v2/pkg/apis/scheduler/v2"
"d7y.io/dragonfly/v2/client/config"
logger "d7y.io/dragonfly/v2/internal/dflog"
pkgbalancer "d7y.io/dragonfly/v2/pkg/balancer"
"d7y.io/dragonfly/v2/pkg/resolver"
"d7y.io/dragonfly/v2/pkg/rpc"
)
// GetV2 returns v2 version of the scheduler client.
func GetV2(ctx context.Context, dynconfig config.Dynconfig, opts ...grpc.DialOption) (V2, error) {
// Register resolver and balancer.
resolver.RegisterScheduler(dynconfig)
builder, pickerBuilder := pkgbalancer.NewConsistentHashingBuilder()
balancer.Register(builder)
conn, err := grpc.DialContext(
ctx,
resolver.SchedulerVirtualTarget,
append([]grpc.DialOption{
grpc.WithIdleTimeout(0),
grpc.WithDefaultServiceConfig(pkgbalancer.BalancerServiceConfig),
grpc.WithUnaryInterceptor(grpc_middleware.ChainUnaryClient(
grpc_prometheus.UnaryClientInterceptor,
grpc_zap.UnaryClientInterceptor(logger.GrpcLogger.Desugar()),
grpc_retry.UnaryClientInterceptor(
grpc_retry.WithMax(maxRetries),
grpc_retry.WithBackoff(grpc_retry.BackoffLinear(backoffWaitBetween)),
),
rpc.RefresherUnaryClientInterceptor(dynconfig),
)),
grpc.WithStreamInterceptor(grpc_middleware.ChainStreamClient(
grpc_prometheus.StreamClientInterceptor,
grpc_zap.StreamClientInterceptor(logger.GrpcLogger.Desugar()),
rpc.RefresherStreamClientInterceptor(dynconfig),
)),
}, opts...)...,
)
if err != nil {
return nil, err
}
return &v2{
SchedulerClient: schedulerv2.NewSchedulerClient(conn),
ClientConn: conn,
Dynconfig: dynconfig,
dialOptions: opts,
ConsistentHashingPickerBuilder: pickerBuilder,
}, nil
}
// GetV2ByAddr returns v2 version of the scheduler client by address.
func GetV2ByAddr(ctx context.Context, target string, opts ...grpc.DialOption) (V2, error) {
conn, err := grpc.DialContext(
ctx,
target,
append([]grpc.DialOption{
grpc.WithIdleTimeout(0),
grpc.WithStatsHandler(otelgrpc.NewClientHandler()),
grpc.WithDefaultServiceConfig(pkgbalancer.BalancerServiceConfig),
grpc.WithUnaryInterceptor(grpc_middleware.ChainUnaryClient(
grpc_prometheus.UnaryClientInterceptor,
grpc_zap.UnaryClientInterceptor(logger.GrpcLogger.Desugar()),
grpc_retry.UnaryClientInterceptor(
grpc_retry.WithMax(maxRetries),
grpc_retry.WithBackoff(grpc_retry.BackoffLinear(backoffWaitBetween)),
),
)),
grpc.WithStreamInterceptor(grpc_middleware.ChainStreamClient(
grpc_prometheus.StreamClientInterceptor,
grpc_zap.StreamClientInterceptor(logger.GrpcLogger.Desugar()),
)),
}, opts...)...,
)
if err != nil {
return nil, err
}
return &v2{
SchedulerClient: schedulerv2.NewSchedulerClient(conn),
ClientConn: conn,
dialOptions: opts,
}, nil
}
// V2 is the interface for v1 version of the grpc client.
type V2 interface {
// AnnouncePeer announces peer to scheduler.
AnnouncePeer(context.Context, string, ...grpc.CallOption) (schedulerv2.Scheduler_AnnouncePeerClient, error)
// Checks information of peer.
StatPeer(context.Context, *schedulerv2.StatPeerRequest, ...grpc.CallOption) (*commonv2.Peer, error)
// LeavePeer releases peer in scheduler.
LeavePeer(context.Context, *schedulerv2.LeavePeerRequest, ...grpc.CallOption) error
// TODO exchange peer api definition.
// ExchangePeer exchanges peer information.
ExchangePeer(context.Context, *schedulerv2.ExchangePeerRequest, ...grpc.CallOption) (*schedulerv2.ExchangePeerResponse, error)
// Checks information of task.
StatTask(context.Context, *schedulerv2.StatTaskRequest, ...grpc.CallOption) (*commonv2.Task, error)
// AnnounceHost announces host to scheduler.
AnnounceHost(context.Context, *schedulerv2.AnnounceHostRequest, ...grpc.CallOption) error
// LeaveHost releases host in scheduler.
LeaveHost(context.Context, *schedulerv2.LeaveHostRequest, ...grpc.CallOption) error
// SyncProbes sync probes of the host.
SyncProbes(context.Context, *schedulerv2.SyncProbesRequest, ...grpc.CallOption) (schedulerv2.Scheduler_SyncProbesClient, error)
// Close tears down the ClientConn and all underlying connections.
Close() error
}
// v2 provides v2 version of the scheduler grpc function.
type v2 struct {
schedulerv2.SchedulerClient
*grpc.ClientConn
config.Dynconfig
dialOptions []grpc.DialOption
*pkgbalancer.ConsistentHashingPickerBuilder
}
// AnnouncePeer announces peer to scheduler.
func (v *v2) AnnouncePeer(ctx context.Context, taskID string, opts ...grpc.CallOption) (schedulerv2.Scheduler_AnnouncePeerClient, error) {
return v.SchedulerClient.AnnouncePeer(
context.WithValue(ctx, pkgbalancer.ContextKey, taskID),
opts...,
)
}
// Checks information of peer.
func (v *v2) StatPeer(ctx context.Context, req *schedulerv2.StatPeerRequest, opts ...grpc.CallOption) (*commonv2.Peer, error) {
ctx, cancel := context.WithTimeout(ctx, contextTimeout)
defer cancel()
return v.SchedulerClient.StatPeer(
context.WithValue(ctx, pkgbalancer.ContextKey, req.TaskId),
req,
opts...,
)
}
// LeavePeer releases peer in scheduler.
func (v *v2) LeavePeer(ctx context.Context, req *schedulerv2.LeavePeerRequest, opts ...grpc.CallOption) error {
ctx, cancel := context.WithTimeout(ctx, contextTimeout)
defer cancel()
_, err := v.SchedulerClient.LeavePeer(
context.WithValue(ctx, pkgbalancer.ContextKey, req.TaskId),
req,
opts...,
)
return err
}
// TODO exchange peer api definition.
// ExchangePeer exchanges peer information.
func (v *v2) ExchangePeer(ctx context.Context, req *schedulerv2.ExchangePeerRequest, opts ...grpc.CallOption) (*schedulerv2.ExchangePeerResponse, error) {
ctx, cancel := context.WithTimeout(ctx, contextTimeout)
defer cancel()
return v.SchedulerClient.ExchangePeer(
context.WithValue(ctx, pkgbalancer.ContextKey, req.TaskId),
req,
opts...,
)
}
// Checks information of task.
func (v *v2) StatTask(ctx context.Context, req *schedulerv2.StatTaskRequest, opts ...grpc.CallOption) (*commonv2.Task, error) {
ctx, cancel := context.WithTimeout(ctx, contextTimeout)
defer cancel()
return v.SchedulerClient.StatTask(
context.WithValue(ctx, pkgbalancer.ContextKey, req.Id),
req,
opts...,
)
}
// AnnounceHost announces host to scheduler.
func (v *v2) AnnounceHost(ctx context.Context, req *schedulerv2.AnnounceHostRequest, opts ...grpc.CallOption) error {
ctx, cancel := context.WithTimeout(ctx, contextTimeout)
defer cancel()
circle, err := v.GetCircle()
if err != nil {
return err
}
eg, _ := errgroup.WithContext(ctx)
for _, virtualTaskID := range circle {
virtualTaskID := virtualTaskID
eg.Go(func() error {
if _, err := v.SchedulerClient.AnnounceHost(
context.WithValue(ctx, pkgbalancer.ContextKey, virtualTaskID),
req,
opts...,
); err != nil {
return err
}
return nil
})
}
return eg.Wait()
}
// LeaveHost releases host in all schedulers.
func (v *v2) LeaveHost(ctx context.Context, req *schedulerv2.LeaveHostRequest, opts ...grpc.CallOption) error {
ctx, cancel := context.WithTimeout(ctx, contextTimeout)
defer cancel()
circle, err := v.GetCircle()
if err != nil {
return err
}
logger.Infof("leave host circle is %#v", circle)
eg, _ := errgroup.WithContext(ctx)
for _, virtualTaskID := range circle {
virtualTaskID := virtualTaskID
eg.Go(func() error {
if _, err := v.SchedulerClient.LeaveHost(
context.WithValue(ctx, pkgbalancer.ContextKey, virtualTaskID),
req,
opts...,
); err != nil {
return err
}
return nil
})
}
return eg.Wait()
}
// SyncProbes sync probes of the host.
func (v *v2) SyncProbes(ctx context.Context, req *schedulerv2.SyncProbesRequest, opts ...grpc.CallOption) (schedulerv2.Scheduler_SyncProbesClient, error) {
stream, err := v.SchedulerClient.SyncProbes(
context.WithValue(ctx, pkgbalancer.ContextKey, req.Host.Id),
opts...,
)
if err != nil {
return nil, err
}
// Send begin of piece.
return stream, stream.Send(req)
}