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gonvme_utils.go
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gonvme_utils.go
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/*
*
* Copyright © 2022-2023 Dell Inc. or its subsidiaries. All Rights Reserved.
*
* 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 gonvme
import (
"encoding/json"
"regexp"
"strings"
log "github.com/sirupsen/logrus"
)
type sessionParser struct{}
// Single subsystem object
type subsystems struct {
Name string
NQN string
Paths []map[string]string `json:"Paths"`
}
// Response of subsystems.
type Response struct {
Subsys []subsystems `json:"Subsystems"`
}
func (sp *sessionParser) Parse(data []byte) []NVMESession {
str := string(data)
var result []NVMESession
var response Response
err := json.Unmarshal([]byte(str), &response)
if err != nil {
log.Error("JSON-encoded parsing error: ", err.Error())
return result
}
for _, system := range response.Subsys {
session := NVMESession{}
session.Target = system.NQN
reAdd := `(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}`
re := regexp.MustCompilePOSIX(reAdd)
for _, path := range system.Paths {
session.Name = path["Name"]
session.NVMETransportName = NVMETransportName(path["Transport"])
if path["Transport"] == NVMeTransportTypeFC {
session.Portal = strings.Split(strings.Fields(path["Address"])[0], "=")[1]
} else if path["Transport"] == NVMeTransportTypeTCP {
if re.MatchString(path["Address"]) {
session.Portal = re.FindString(path["Address"]) + ":" + strings.ReplaceAll(strings.Split(strings.Fields(path["Address"])[1], "=")[1], "\"", "")
}
} else {
continue
}
session.NVMESessionState = NVMESessionState(path["State"])
result = append(result, session)
}
}
return result
}