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contact.go
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contact.go
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/*
* Copyright (C) 2020 The "MysteriumNetwork/node" Authors.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package p2p
import (
"encoding/json"
"errors"
"fmt"
"github.com/mysteriumnetwork/node/market"
)
// ErrContactNotFound represents that no p2p contact is found.
var ErrContactNotFound = errors.New("p2p contact not found")
const (
// ContactTypeV1 is p2p contact type.
ContactTypeV1 = "nats/p2p/v1"
)
// ContactDefinition represents p2p contact which contains NATS broker addresses for connection.
type ContactDefinition struct {
BrokerAddresses []string `json:"broker_addresses"`
}
// ParseContact tries to parse p2p contact from given contacts list.
func ParseContact(contacts market.ContactList) (ContactDefinition, error) {
for _, c := range contacts {
if c.Type == ContactTypeV1 {
def, ok := c.Definition.(ContactDefinition)
if !ok {
return ContactDefinition{}, fmt.Errorf("invalid p2p contact definition: %#v", c.Definition)
}
return def, nil
}
}
return ContactDefinition{}, ErrContactNotFound
}
// RegisterContactUnserializer registers global proposal contact unserializer.
func RegisterContactUnserializer() {
market.RegisterContactUnserializer(
ContactTypeV1,
func(rawDefinition *json.RawMessage) (market.ContactDefinition, error) {
var contact ContactDefinition
err := json.Unmarshal(*rawDefinition, &contact)
return contact, err
},
)
}