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requester.go
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requester.go
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/*
Copyright 2022 Huawei Cloud Computing Technologies Co., Ltd.
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.
*/
package netstorage
import (
"time"
"github.com/openGemini/openGemini/engine/executor/spdy"
"github.com/openGemini/openGemini/engine/executor/spdy/transport"
"github.com/openGemini/openGemini/lib/codec"
meta "github.com/openGemini/openGemini/lib/metaclient"
meta2 "github.com/openGemini/openGemini/lib/util/lifted/influx/meta"
)
const (
retryInterval = time.Millisecond * 100
defaultTimeout = 30 * time.Second
)
type Requester struct {
msgTyp uint8
data codec.BinaryCodec
mc meta.MetaClient
node *meta2.DataNode
insert bool
timeout time.Duration
}
func NewRequester(msgTyp uint8, data codec.BinaryCodec, mc meta.MetaClient) *Requester {
return &Requester{
msgTyp: msgTyp,
data: data,
mc: mc,
timeout: defaultTimeout,
}
}
func (r *Requester) setToInsert() {
r.insert = true
}
func (r *Requester) setTimeout(timeout time.Duration) {
r.timeout = timeout
}
func (r *Requester) initWithNodeID(nodeID uint64) error {
node, err := r.mc.DataNode(nodeID)
if err != nil {
return err
}
r.initWithNode(node)
return nil
}
func (r *Requester) initWithNode(node *meta2.DataNode) {
r.node = node
if r.insert {
transport.NewWriteNodeManager().Add(node.ID, node.Host)
} else {
transport.NewNodeManager().Add(node.ID, node.TCPHost)
}
}
func (r *Requester) ddl() (interface{}, error) {
data := NewDDLMessage(r.msgTyp, r.data)
cb := &DDLCallback{}
if err := r.request(spdy.DDLRequest, data, cb); err != nil {
return nil, err
}
return cb.GetResponse(), nil
}
func (r *Requester) sysCtrl(req *SysCtrlRequest) (interface{}, error) {
cb := &SysCtrlCallback{}
if err := r.request(spdy.SysCtrlRequest, req, cb); err != nil {
return nil, err
}
return cb.GetResponse(), nil
}
func (r *Requester) request(queryTyp uint8, data transport.Codec, cb transport.Callback) error {
var trans *transport.Transport
var err error
if r.insert {
trans, err = transport.NewWriteTransport(r.node.ID, queryTyp, cb)
} else {
trans, err = transport.NewTransport(r.node.ID, queryTyp, cb)
}
if err != nil {
return err
}
if err := trans.Send(data); err != nil {
return err
}
if err := trans.Wait(); err != nil {
return err
}
return nil
}