78 lines
1.6 KiB
Go
78 lines
1.6 KiB
Go
package persistence
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import (
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"github.com/pkg/errors"
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"io/ioutil"
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"dev.narayana.im/narayana/telegabber/yamldb"
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log "github.com/sirupsen/logrus"
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"gopkg.in/yaml.v2"
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)
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// SessionsYamlDB wraps YamlDB with Session
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type SessionsYamlDB struct {
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yamldb.YamlDB
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Data *SessionsMap
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}
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// SessionsMap is for :sessions: subtree
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type SessionsMap struct {
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Sessions map[string]Session `yaml:":sessions"`
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}
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// Session is a key-values subtree
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type Session struct {
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Login string `yaml:":login"`
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}
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var sessionDB *SessionsYamlDB
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// SessionMarshaller implementation for YamlDB
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func SessionMarshaller() ([]byte, error) {
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return yaml.Marshal(sessionDB.Data)
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}
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// LoadSessions restores TDlib sessions from the previous run
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func LoadSessions(path string) (*SessionsYamlDB, error) {
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var sessionData SessionsMap
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var err error
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sessionDB, err = initYamlDB(path, &sessionData)
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if err != nil {
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return sessionDB, errors.Wrap(err, "Sessions restore error")
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}
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return sessionDB, nil
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}
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func emptySessionsMap(dataPtr *SessionsMap) {
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dataPtr.Sessions = make(map[string]Session)
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}
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func initYamlDB(path string, dataPtr *SessionsMap) (*SessionsYamlDB, error) {
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file, err := ioutil.ReadFile(path)
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if err == nil {
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err = yaml.Unmarshal(file, dataPtr)
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if err != nil {
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return nil, errors.Wrap(err, "YamlDB is corrupted")
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}
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if dataPtr.Sessions == nil {
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emptySessionsMap(dataPtr)
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}
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log.Debugf("Unmarshalled YAML: %#v", *dataPtr)
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} else {
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// DB file does not exist, create an empty DB
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emptySessionsMap(dataPtr)
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}
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return &SessionsYamlDB{
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YamlDB: yamldb.YamlDB{
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Path: path,
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PathNew: path + ".new",
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},
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Data: dataPtr,
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}, nil
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}
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