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server.go
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server.go
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package server
import (
"fmt"
"net/http"
"slices"
"github.com/igorhub/devcard/pkg/internal/project"
)
type server struct {
cfg Config
clients []*client
handler http.Handler
events chan serverMessage
projects map[string]*project.Project
restart chan<- struct{}
}
func NewServer(cfg Config, restart chan<- struct{}) *server {
s := &server{
cfg: cfg,
events: make(chan serverMessage, 256),
projects: make(map[string]*project.Project),
restart: restart,
}
for _, cfgProject := range cfg.Projects {
p := project.NewProject(cfgProject.Name, cfgProject.Dir)
s.projects[cfgProject.Name] = p
go func() {
for range p.Update {
s.events <- msgRefreshClients{p}
}
}()
}
go s.manageClients()
mux := http.NewServeMux()
s.addRoutes(cfg, mux)
s.handler = mux
return s
}
func (s *server) ServeHTTP(w http.ResponseWriter, req *http.Request) {
s.handler.ServeHTTP(w, req)
}
func (s *server) Shutdown() {
done := make(chan struct{})
s.events <- msgShutdown{done}
<-done
}
type serverMessage interface{ serverMessage() }
type msgRegisterClient struct {
client *client
}
type msgUnregisterClient struct {
client *client
}
type msgUnblockClient struct {
blockId string
}
type msgRefreshClients struct {
project *project.Project
}
type msgShutdown struct {
done chan struct{}
}
func (msgRegisterClient) serverMessage() {}
func (msgUnregisterClient) serverMessage() {}
func (msgUnblockClient) serverMessage() {}
func (msgRefreshClients) serverMessage() {}
func (msgShutdown) serverMessage() {}
func (s *server) manageClients() {
for event := range s.events {
// log.Printf("manageClients: %#v", event)
switch e := event.(type) {
case msgRegisterClient:
s.clients = append(s.clients, e.client)
case msgUnregisterClient:
e.client.project.RemoveRepo(e.client.repo)
e.client.close()
s.clients = slices.DeleteFunc(s.clients, func(c *client) bool { return c == e.client })
case msgUnblockClient:
for _, c := range s.clients {
if c.unblock == e.blockId {
close(c.unblockC)
c.unblockC = nil
c.unblock = ""
}
}
case msgRefreshClients:
for _, c := range s.clients {
if c.project == e.project {
c.refresh()
}
}
case msgShutdown:
for _, c := range s.clients {
c.close()
}
for _, p := range s.projects {
p.Shutdown()
}
close(e.done)
return
default:
panic(fmt.Errorf("manage clients: unknown event %T", e))
}
}
}