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rpc_client.go
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rpc_client.go
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package rpc
import (
"context"
"crypto/tls"
"encoding/base64"
"errors"
"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
"github.com/TeaOSLab/EdgeNode/internal/configs"
teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
"github.com/TeaOSLab/EdgeNode/internal/encrypt"
"github.com/TeaOSLab/EdgeNode/internal/utils"
"github.com/iwind/TeaGo/maps"
"github.com/iwind/TeaGo/rands"
"google.golang.org/grpc"
"google.golang.org/grpc/connectivity"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/credentials/insecure"
"google.golang.org/grpc/encoding/gzip"
"google.golang.org/grpc/metadata"
"net/url"
"sync"
"time"
)
type RPCClient struct {
apiConfig *configs.APIConfig
conns []*grpc.ClientConn
locker sync.RWMutex
NodeRPC pb.NodeServiceClient
NodeLogRPC pb.NodeLogServiceClient
NodeTaskRPC pb.NodeTaskServiceClient
NodeValueRPC pb.NodeValueServiceClient
HTTPAccessLogRPC pb.HTTPAccessLogServiceClient
HTTPCacheTaskKeyRPC pb.HTTPCacheTaskKeyServiceClient
APINodeRPC pb.APINodeServiceClient
IPLibraryArtifactRPC pb.IPLibraryArtifactServiceClient
IPListRPC pb.IPListServiceClient
IPItemRPC pb.IPItemServiceClient
FileRPC pb.FileServiceClient
FileChunkRPC pb.FileChunkServiceClient
ACMEAuthenticationRPC pb.ACMEAuthenticationServiceClient
ServerRPC pb.ServerServiceClient
ServerDailyStatRPC pb.ServerDailyStatServiceClient
ServerBandwidthStatRPC pb.ServerBandwidthStatServiceClient
MetricStatRPC pb.MetricStatServiceClient
FirewallRPC pb.FirewallServiceClient
SSLCertRPC pb.SSLCertServiceClient
ScriptRPC pb.ScriptServiceClient
}
func NewRPCClient(apiConfig *configs.APIConfig) (*RPCClient, error) {
if apiConfig == nil {
return nil, errors.New("api config should not be nil")
}
var client = &RPCClient{
apiConfig: apiConfig,
}
// 初始化RPC实例
client.NodeRPC = pb.NewNodeServiceClient(client)
client.NodeLogRPC = pb.NewNodeLogServiceClient(client)
client.NodeTaskRPC = pb.NewNodeTaskServiceClient(client)
client.NodeValueRPC = pb.NewNodeValueServiceClient(client)
client.HTTPAccessLogRPC = pb.NewHTTPAccessLogServiceClient(client)
client.HTTPCacheTaskKeyRPC = pb.NewHTTPCacheTaskKeyServiceClient(client)
client.APINodeRPC = pb.NewAPINodeServiceClient(client)
client.IPLibraryArtifactRPC = pb.NewIPLibraryArtifactServiceClient(client)
client.IPListRPC = pb.NewIPListServiceClient(client)
client.IPItemRPC = pb.NewIPItemServiceClient(client)
client.FileRPC = pb.NewFileServiceClient(client)
client.FileChunkRPC = pb.NewFileChunkServiceClient(client)
client.ACMEAuthenticationRPC = pb.NewACMEAuthenticationServiceClient(client)
client.ServerRPC = pb.NewServerServiceClient(client)
client.ServerDailyStatRPC = pb.NewServerDailyStatServiceClient(client)
client.ServerBandwidthStatRPC = pb.NewServerBandwidthStatServiceClient(client)
client.MetricStatRPC = pb.NewMetricStatServiceClient(client)
client.FirewallRPC = pb.NewFirewallServiceClient(client)
client.SSLCertRPC = pb.NewSSLCertServiceClient(client)
client.ScriptRPC = pb.NewScriptServiceClient(client)
err := client.init()
if err != nil {
return nil, err
}
return client, nil
}
// Context 节点上下文信息
func (this *RPCClient) Context() context.Context {
var ctx = context.Background()
var m = maps.Map{
"timestamp": time.Now().Unix(),
"type": "node",
"userId": 0,
}
method, err := encrypt.NewMethodInstance(teaconst.EncryptMethod, this.apiConfig.Secret, this.apiConfig.NodeId)
if err != nil {
utils.PrintError(err)
return context.Background()
}
data, err := method.Encrypt(m.AsJSON())
if err != nil {
utils.PrintError(err)
return context.Background()
}
var token = base64.StdEncoding.EncodeToString(data)
ctx = metadata.AppendToOutgoingContext(ctx, "nodeId", this.apiConfig.NodeId, "token", token)
return ctx
}
// ClusterContext 集群上下文
func (this *RPCClient) ClusterContext(clusterId string, clusterSecret string) context.Context {
ctx := context.Background()
m := maps.Map{
"timestamp": time.Now().Unix(),
"type": "cluster",
"userId": 0,
}
method, err := encrypt.NewMethodInstance(teaconst.EncryptMethod, clusterSecret, clusterId)
if err != nil {
utils.PrintError(err)
return context.Background()
}
data, err := method.Encrypt(m.AsJSON())
if err != nil {
utils.PrintError(err)
return context.Background()
}
token := base64.StdEncoding.EncodeToString(data)
ctx = metadata.AppendToOutgoingContext(ctx, "nodeId", clusterId, "token", token)
return ctx
}
// Close 关闭连接
func (this *RPCClient) Close() {
this.locker.Lock()
for _, conn := range this.conns {
_ = conn.Close()
}
this.locker.Unlock()
}
// UpdateConfig 修改配置
func (this *RPCClient) UpdateConfig(config *configs.APIConfig) error {
this.apiConfig = config
this.locker.Lock()
err := this.init()
this.locker.Unlock()
return err
}
// 初始化
func (this *RPCClient) init() error {
// 重新连接
var conns = []*grpc.ClientConn{}
for _, endpoint := range this.apiConfig.RPC.Endpoints {
u, err := url.Parse(endpoint)
if err != nil {
return errors.New("parse endpoint failed: " + err.Error())
}
var conn *grpc.ClientConn
var callOptions = grpc.WithDefaultCallOptions(
grpc.MaxCallRecvMsgSize(128*1024*1024),
grpc.MaxCallSendMsgSize(128*1024*1024),
grpc.UseCompressor(gzip.Name),
)
if u.Scheme == "http" {
conn, err = grpc.Dial(u.Host, grpc.WithTransportCredentials(insecure.NewCredentials()), callOptions)
} else if u.Scheme == "https" {
conn, err = grpc.Dial(u.Host, grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{
InsecureSkipVerify: true,
})), callOptions)
} else {
return errors.New("parse endpoint failed: invalid scheme '" + u.Scheme + "'")
}
if err != nil {
return err
}
conns = append(conns, conn)
}
if len(conns) == 0 {
return errors.New("[RPC]no available endpoints")
}
// 这里不需要加锁,防止和pickConn()冲突
this.conns = conns
return nil
}
// 随机选择一个连接
func (this *RPCClient) pickConn() *grpc.ClientConn {
this.locker.Lock()
defer this.locker.Unlock()
// 检查连接状态
if len(this.conns) > 0 {
var availableConns = []*grpc.ClientConn{}
for _, stateArray := range [][2]connectivity.State{
{connectivity.Ready, connectivity.Idle}, // 优先Ready和Idle
{connectivity.Connecting, connectivity.Connecting},
} {
for _, conn := range this.conns {
var state = conn.GetState()
if state == stateArray[0] || state == stateArray[1] {
availableConns = append(availableConns, conn)
}
}
if len(availableConns) > 0 {
return this.randConn(availableConns)
}
}
if len(availableConns) > 0 {
return this.randConn(availableConns)
}
// 关闭
for _, conn := range this.conns {
_ = conn.Close()
}
}
// 重新初始化
err := this.init()
if err != nil {
// 错误提示已经在构造对象时打印过,所以这里不再重复打印
return nil
}
if len(this.conns) == 0 {
return nil
}
return this.randConn(this.conns)
}
func (this *RPCClient) Invoke(ctx context.Context, method string, args interface{}, reply interface{}, opts ...grpc.CallOption) error {
var conn = this.pickConn()
if conn == nil {
return errors.New("can not get available grpc connection")
}
return conn.Invoke(ctx, method, args, reply, opts...)
}
func (this *RPCClient) NewStream(ctx context.Context, desc *grpc.StreamDesc, method string, opts ...grpc.CallOption) (grpc.ClientStream, error) {
var conn = this.pickConn()
if conn == nil {
return nil, errors.New("can not get available grpc connection")
}
return conn.NewStream(ctx, desc, method, opts...)
}
func (this *RPCClient) randConn(conns []*grpc.ClientConn) *grpc.ClientConn {
var l = len(conns)
if l == 0 {
return nil
}
if l == 1 {
return conns[0]
}
return conns[rands.Int(0, l-1)]
}