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|
package config
import (
"encoding/json"
"fmt"
"io"
"log"
"net"
"os"
"codeberg.org/snonux/gorum/internal/utils"
)
type Config struct {
StateDir string
Address string
Nodes []string
LoopIntervalS int64 `json:"LoopIntervalS,omitempty"`
MyID string `json:"MyID,omitempty"`
RelaxedMode bool `json:"RelaxedMode,omitempty"`
nodeNumberCache map[string]int
}
// TODO Refactor all unit tests to use a constructor here
// and to initialize the nodeNumberCache inside of the constructor!
func New(configFile string) (Config, error) {
var c Config
file, err := os.Open(configFile)
if err != nil {
return c, err
}
defer file.Close()
bytes, err := io.ReadAll(file)
if err != nil {
return c, err
}
err = json.Unmarshal(bytes, &c)
if err != nil {
return c, err
}
if c.LoopIntervalS == 0 {
c.LoopIntervalS = 10
}
if c.MyID == "" {
hostname, err := os.Hostname()
if err != nil {
return c, err
}
c.MyID = hostname
}
return c, nil
}
func (c *Config) NodeNumber(node string) int {
if c.nodeNumberCache == nil {
c.nodeNumberCache = make(map[string]int, len(c.Nodes))
}
nodeNumber, ok := c.nodeNumberCache[node]
if ok {
return nodeNumber
}
for i, node_ := range c.Nodes {
if node == utils.StripPort(node_) {
c.nodeNumberCache[node] = i
return i
}
}
log.Println("config:", fmt.Errorf("node %s not found - it will affect it's score!", node))
return 0
}
func (c Config) IsNode(remoteAddr string) bool {
remoteAddr = utils.StripPort(remoteAddr)
for _, node := range c.Nodes {
if remoteAddr == utils.StripPort(node) {
return true
}
}
return false
}
func (c Config) IsNodeWithLookup(remoteAddr string, lookupIP func(string) ([]net.IP, error)) bool {
remoteAddr = utils.StripPort(remoteAddr)
for _, node := range c.Nodes {
ips, err := lookupIP(utils.StripPort(node))
if err != nil {
log.Println("config:", err)
continue
}
for _, ip := range ips {
if remoteAddr == ip.String() {
return true
}
}
}
return false
}
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