soft-serve

  1package serve
  2
  3import (
  4	"context"
  5	"errors"
  6	"fmt"
  7	"net/http"
  8
  9	"github.com/charmbracelet/log/v2"
 10
 11	"github.com/charmbracelet/soft-serve/pkg/backend"
 12	"github.com/charmbracelet/soft-serve/pkg/config"
 13	"github.com/charmbracelet/soft-serve/pkg/cron"
 14	"github.com/charmbracelet/soft-serve/pkg/daemon"
 15	"github.com/charmbracelet/soft-serve/pkg/db"
 16	"github.com/charmbracelet/soft-serve/pkg/jobs"
 17	sshsrv "github.com/charmbracelet/soft-serve/pkg/ssh"
 18	"github.com/charmbracelet/soft-serve/pkg/stats"
 19	"github.com/charmbracelet/soft-serve/pkg/web"
 20	"github.com/charmbracelet/ssh"
 21	"golang.org/x/sync/errgroup"
 22)
 23
 24// Server is the Soft Serve server.
 25type Server struct {
 26	SSHServer   *sshsrv.SSHServer
 27	GitDaemon   *daemon.GitDaemon
 28	HTTPServer  *web.HTTPServer
 29	StatsServer *stats.StatsServer
 30	Cron        *cron.Scheduler
 31	Config      *config.Config
 32	Backend     *backend.Backend
 33	DB          *db.DB
 34
 35	logger *log.Logger
 36	ctx    context.Context
 37}
 38
 39// NewServer returns a new *Server configured to serve Soft Serve. The SSH
 40// server key-pair will be created if none exists.
 41// It expects a context with *backend.Backend, *db.DB, *log.Logger, and
 42// *config.Config attached.
 43func NewServer(ctx context.Context) (*Server, error) {
 44	var err error
 45	cfg := config.FromContext(ctx)
 46	be := backend.FromContext(ctx)
 47	db := db.FromContext(ctx)
 48	logger := log.FromContext(ctx).WithPrefix("server")
 49	srv := &Server{
 50		Config:  cfg,
 51		Backend: be,
 52		DB:      db,
 53		logger:  log.FromContext(ctx).WithPrefix("server"),
 54		ctx:     ctx,
 55	}
 56
 57	// Add cron jobs.
 58	sched := cron.NewScheduler(ctx)
 59	for n, j := range jobs.List() {
 60		id, err := sched.AddFunc(j.Runner.Spec(ctx), j.Runner.Func(ctx))
 61		if err != nil {
 62			logger.Warn("error adding cron job", "job", n, "err", err)
 63		}
 64
 65		j.ID = id
 66	}
 67
 68	srv.Cron = sched
 69
 70	srv.SSHServer, err = sshsrv.NewSSHServer(ctx)
 71	if err != nil {
 72		return nil, fmt.Errorf("create ssh server: %w", err)
 73	}
 74
 75	srv.GitDaemon, err = daemon.NewGitDaemon(ctx)
 76	if err != nil {
 77		return nil, fmt.Errorf("create git daemon: %w", err)
 78	}
 79
 80	srv.HTTPServer, err = web.NewHTTPServer(ctx)
 81	if err != nil {
 82		return nil, fmt.Errorf("create http server: %w", err)
 83	}
 84
 85	srv.StatsServer, err = stats.NewStatsServer(ctx)
 86	if err != nil {
 87		return nil, fmt.Errorf("create stats server: %w", err)
 88	}
 89
 90	return srv, nil
 91}
 92
 93// Start starts the SSH server.
 94func (s *Server) Start() error {
 95	errg, _ := errgroup.WithContext(s.ctx)
 96
 97	// optionally start the SSH server
 98	if s.Config.SSH.Enabled {
 99		errg.Go(func() error {
100			s.logger.Print("Starting SSH server", "addr", s.Config.SSH.ListenAddr)
101			if err := s.SSHServer.ListenAndServe(); !errors.Is(err, ssh.ErrServerClosed) {
102				return err
103			}
104			return nil
105		})
106	}
107
108	// optionally start the git daemon
109	if s.Config.Git.Enabled {
110		errg.Go(func() error {
111			s.logger.Print("Starting Git daemon", "addr", s.Config.Git.ListenAddr)
112			if err := s.GitDaemon.ListenAndServe(); !errors.Is(err, daemon.ErrServerClosed) {
113				return err
114			}
115			return nil
116		})
117	}
118
119	// optionally start the HTTP server
120	if s.Config.HTTP.Enabled {
121		errg.Go(func() error {
122			s.logger.Print("Starting HTTP server", "addr", s.Config.HTTP.ListenAddr)
123			if err := s.HTTPServer.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
124				return err
125			}
126			return nil
127		})
128	}
129
130	// optionally start the Stats server
131	if s.Config.Stats.Enabled {
132		errg.Go(func() error {
133			s.logger.Print("Starting Stats server", "addr", s.Config.Stats.ListenAddr)
134			if err := s.StatsServer.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
135				return err
136			}
137			return nil
138		})
139	}
140
141	errg.Go(func() error {
142		s.Cron.Start()
143		return nil
144	})
145	return errg.Wait()
146}
147
148// Shutdown lets the server gracefully shutdown.
149func (s *Server) Shutdown(ctx context.Context) error {
150	errg, ctx := errgroup.WithContext(ctx)
151	errg.Go(func() error {
152		return s.GitDaemon.Shutdown(ctx)
153	})
154	errg.Go(func() error {
155		return s.HTTPServer.Shutdown(ctx)
156	})
157	errg.Go(func() error {
158		return s.SSHServer.Shutdown(ctx)
159	})
160	errg.Go(func() error {
161		return s.StatsServer.Shutdown(ctx)
162	})
163	errg.Go(func() error {
164		for _, j := range jobs.List() {
165			s.Cron.Remove(j.ID)
166		}
167		s.Cron.Stop()
168		return nil
169	})
170	// defer s.DB.Close() // nolint: errcheck
171	return errg.Wait()
172}
173
174// Close closes the SSH server.
175func (s *Server) Close() error {
176	var errg errgroup.Group
177	errg.Go(s.GitDaemon.Close)
178	errg.Go(s.HTTPServer.Close)
179	errg.Go(s.SSHServer.Close)
180	errg.Go(s.StatsServer.Close)
181	errg.Go(func() error {
182		s.Cron.Stop()
183		return nil
184	})
185	// defer s.DB.Close() // nolint: errcheck
186	return errg.Wait()
187}