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service.go
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service.go
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package goVirtualHost
import (
"errors"
"sync"
)
var alreadyOpened = errors.New("already opened")
func NewService() *Service {
service := &Service{
state: statePrepare,
listeners: listeners{},
servers: servers{},
vhosts: vhosts{},
}
return service
}
func (svc *Service) addVhostToServers(vhost *vhost, params params) {
for _, param := range params {
// listeners, servers
var listener *listener
var server *server
listener = svc.listeners.find(param.proto, param.ip, param.port)
if listener != nil {
server = listener.server
} else {
server = newServer(param.useTLS)
listener = newListener(param.proto, param.ip, param.port)
listener.server = server
svc.listeners = append(svc.listeners, listener)
svc.servers = append(svc.servers, server)
}
// server -> vhost
server.vhosts = append(server.vhosts, vhost)
}
}
func (svc *Service) Add(info *HostInfo) (errs []error) {
svc.mu.Lock()
defer svc.mu.Unlock()
if svc.state > statePrepare {
errs = append(errs, alreadyOpened)
return
}
hostNames, vhostParams, certs := info.parse()
errs = svc.params.validate(vhostParams)
if len(errs) > 0 {
return
}
svc.params = append(svc.params, vhostParams...)
vhost := newVhost(certs, hostNames, info.Handler)
svc.vhosts = append(svc.vhosts, vhost)
svc.addVhostToServers(vhost, vhostParams)
return
}
func (svc *Service) openListeners() (errs []error) {
for _, listener := range svc.listeners {
err := listener.open()
if err != nil {
errs = append(errs, err)
}
}
return
}
func (svc *Service) openServers() (errs []error) {
chServeErr := make(chan error)
go func() {
wg := &sync.WaitGroup{}
for _, listener := range svc.listeners {
wg.Add(1)
l := listener
go func() {
err := l.server.open(l)
if err != nil {
chServeErr <- err
}
wg.Done()
}()
}
wg.Wait()
close(chServeErr)
}()
for err := range chServeErr {
errs = append(errs, err)
}
return
}
func (svc *Service) Open() (errs []error) {
svc.mu.Lock()
if svc.state >= stateOpened {
svc.mu.Unlock()
errs = append(errs, alreadyOpened)
return
}
svc.state = stateOpened
svc.mu.Unlock()
svc.params = nil // release unused data
for _, s := range svc.servers {
s.updateDefaultVhost()
s.updateHttpServerTLSConfig()
s.updateHttpServerHandler()
}
defer svc.Close()
errs = svc.openListeners()
if len(errs) > 0 {
return
}
errs = svc.openServers()
return
}
func (svc *Service) Close() {
svc.mu.Lock()
if svc.state >= stateClosed {
svc.mu.Unlock()
return
}
svc.state = stateClosed
svc.mu.Unlock()
for _, listener := range svc.listeners {
if listener.server != nil {
listener.server.close()
}
listener.close()
}
}
func (svc *Service) GetAccessibleURLs(includeLoopback bool) [][]string {
gotIPList := false
var ipv46s, ipv4s, ipv6s []string
vhUrls := make(map[*vhost][]string)
for _, listener := range svc.listeners {
server := listener.server
defaultVh := server.getDefaultVhost()
port := ""
if !isDefaultPort(listener.port, server.useTLS) {
port = listener.port
}
for _, vh := range server.vhosts {
if listener.proto == unix {
url := "unix:" + listener.port
vhUrls[vh] = append(vhUrls[vh], url)
continue
}
for _, hostname := range vh.hostNames {
var url string
if server.useTLS {
url = httpsUrl
} else {
url = httpUrl
}
url = url + hostname + port
vhUrls[vh] = append(vhUrls[vh], url)
}
if vh == defaultVh {
var url string
if server.useTLS {
url = httpsUrl
} else {
url = httpUrl
}
if len(listener.ip) > 0 {
url = url + listener.ip + port
vhUrls[vh] = append(vhUrls[vh], url)
} else {
if !gotIPList {
gotIPList = true
ipv46s, ipv4s, ipv6s = getAllIfaceIPs(includeLoopback)
}
var ips []string
switch listener.proto {
case tcp46:
ips = ipv46s
case tcp4:
ips = ipv4s
case tcp6:
ips = ipv6s
}
for _, ip := range ips {
ipUrl := url + ip + port
vhUrls[vh] = append(vhUrls[vh], ipUrl)
}
}
}
}
}
vhostsUrls := make([][]string, len(svc.vhosts))
for i, vhost := range svc.vhosts {
vhostsUrls[i] = vhUrls[vhost]
}
return vhostsUrls
}