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78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
package storage
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import (
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"fmt"
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"net/url"
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"time"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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type Storage interface {
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Watcher
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Save(device *Device) error
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List(owner string) ([]*Device, error)
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Get(owner string, name string) (*Device, error)
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Delete(device *Device) error
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Close() error
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Open() error
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}
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type Watcher interface {
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OnAdd(cb Callback)
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OnDelete(cb Callback)
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OnReconnect(func())
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}
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type Callback func(device *Device)
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type Device struct {
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Owner string `json:"owner" gorm:"type:varchar(100);unique_index:key;primary_key"`
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OwnerName string `json:"owner_name"`
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OwnerEmail string `json:"owner_email"`
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OwnerProvider string `json:"owner_provider"`
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Name string `json:"name" gorm:"type:varchar(100);unique_index:key;primary_key"`
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PublicKey string `json:"public_key"`
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Address string `json:"address"`
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CreatedAt time.Time `json:"created_at" gorm:"column:created_at"`
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/**
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* Metadata fields below.
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* All metadata tracking can be disabled
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* from the config file.
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*/
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// metadata about the device during the current session
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LastHandshakeTime *time.Time `json:"last_handshake_time"`
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ReceiveBytes int64 `json:"received_bytes"`
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TransmitBytes int64 `json:"transmit_bytes"`
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Endpoint string `json:"endpoint"`
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}
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func NewStorage(uri string) (Storage, error) {
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u, err := url.Parse(uri)
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if err != nil {
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return nil, errors.Wrap(err, "error parsing storage uri")
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}
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switch u.Scheme {
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case "memory":
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logrus.Warn("storing data in memory - devices will not persist between restarts")
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return NewMemoryStorage(), nil
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case "file":
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logrus.Warn("[DEPRECATION NOTICE] using file:// storage is deprecated and will be removed in an upcoming minor release. Please use sqlite3:// for filesystem based storage.")
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logrus.Infof("storing data in %s", u.Path)
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return NewFileStorage(u.Path), nil
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case "postgres":
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fallthrough
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case "mysql":
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fallthrough
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case "sqlite3":
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logrus.Infof("storing data in SQL backend %s", u.Scheme)
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return NewSqlStorage(u), nil
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}
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return nil, fmt.Errorf("unknown storage backend %s", u.Scheme)
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}
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