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local_node.go
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local_node.go
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//
// Defines the `LocalNode` type of Node, which is our node
//
// A `LocalNode` is the local node, as opposed to a `Validator`
// which is the remote nodes this `LocalNode` sees.
//
// There should only be one `LocalNode` per program.
//
package node
import (
"encoding/json"
"fmt"
"sync"
"boscoin.io/sebak/lib/common"
"boscoin.io/sebak/lib/common/keypair"
)
type LocalNode struct {
sync.RWMutex
keypair *keypair.Full
state State
alias string
bindEndpoint *common.Endpoint
publishEndpoint *common.Endpoint
validators map[ /* Node.Address() */ string]*Validator
}
func NewLocalNode(kp *keypair.Full, bindEndpoint *common.Endpoint, alias string) (*LocalNode, error) {
if len(alias) < 1 {
alias = MakeAlias(kp.Address())
}
node := &LocalNode{
keypair: kp,
state: StateCONSENSUS,
alias: alias,
bindEndpoint: bindEndpoint,
validators: map[string]*Validator{},
}
if err := node.AddValidators(node.ConvertToValidator()); err != nil {
return nil, err
} else {
return node, nil
}
}
func (n *LocalNode) String() string {
return n.Alias()
}
func (n *LocalNode) Equal(a Node) bool {
if n.Address() == a.Address() {
return true
}
return false
}
func (n *LocalNode) State() State {
n.RLock()
defer n.RUnlock()
return n.state
}
func (n *LocalNode) SetBooting() {
n.state = StateBOOTING
}
func (n *LocalNode) SetConsensus() {
n.Lock()
defer n.Unlock()
n.state = StateCONSENSUS
}
func (n *LocalNode) SetSync() {
n.Lock()
defer n.Unlock()
n.state = StateSYNC
}
func (n *LocalNode) SetWatch() {
n.Lock()
defer n.Unlock()
n.state = StateWATCH
}
func (n *LocalNode) Address() string {
return n.keypair.Address()
}
func (n *LocalNode) Keypair() *keypair.Full {
return n.keypair
}
func (n *LocalNode) Alias() string {
return n.alias
}
func (n *LocalNode) Endpoint() *common.Endpoint {
if n.publishEndpoint != nil {
return n.publishEndpoint
}
return n.bindEndpoint
}
func (n *LocalNode) BindEndpoint() *common.Endpoint {
return n.bindEndpoint
}
func (n *LocalNode) PublishEndpoint() *common.Endpoint {
return n.publishEndpoint
}
func (n *LocalNode) SetPublishEndpoint(endpoint *common.Endpoint) {
delete(n.validators, n.Address())
n.publishEndpoint = endpoint
n.AddValidators(n.ConvertToValidator())
}
func (n *LocalNode) HasValidators(address string) bool {
n.RLock()
defer n.RUnlock()
_, found := n.validators[address]
return found
}
func (n *LocalNode) GetValidators() map[string]*Validator {
n.RLock()
defer n.RUnlock()
return n.validators
}
func (n *LocalNode) Validator(address string) *Validator {
n.RLock()
defer n.RUnlock()
v, _ := n.validators[address]
return v
}
func (n *LocalNode) AddValidators(validators ...*Validator) error {
n.Lock()
defer n.Unlock()
for _, va := range validators {
n.validators[va.Address()] = va
}
return nil
}
func (n *LocalNode) ClearValidators() {
n.Lock()
defer n.Unlock()
n.validators = map[string]*Validator{}
}
func (n *LocalNode) MarshalJSON() ([]byte, error) {
n.RLock()
defer n.RUnlock()
return json.Marshal(map[string]interface{}{
"address": n.Address(),
"alias": n.Alias(),
"endpoint": n.Endpoint().String(),
"state": n.State().String(),
"validators": n.validators,
})
}
func (n *LocalNode) Serialize() ([]byte, error) {
return json.Marshal(n)
}
func (n *LocalNode) ConvertToValidator() *Validator {
endpoint := n.publishEndpoint
if endpoint == nil {
endpoint = n.bindEndpoint
}
v, _ := NewValidator(n.Address(), endpoint, n.Alias())
return v
}
func MakeAlias(address string) string {
l := len(address)
return fmt.Sprintf("%s.%s", address[:4], address[l-8:l-4])
}