/
server.go
103 lines (91 loc) · 2.73 KB
/
server.go
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package transport
import (
"context"
"errors"
"fmt"
"net/http"
"time"
"github.com/go-chi/chi/v5"
chiMiddleware "github.com/go-chi/chi/v5/middleware"
"github.com/rs/zerolog"
)
// Server is responsible for the transport layer of the API.
type Server struct {
Logger zerolog.Logger
AsyncErrorHandler func(error)
TraceExtractor traceExtractor
DocumentService handlerDocumentService
writer writer
server http.Server
router chi.Mux
}
// Init the server internal state.
func (s *Server) Init() error {
if s.AsyncErrorHandler == nil {
return errors.New("internal/transport.Server.AsyncErrorHandler can't be nil")
}
if s.TraceExtractor == nil {
return errors.New("internal/transport.Server.TraceExtractor can't be nil")
}
if s.DocumentService == nil {
return errors.New("internal/transport.Server.DocumentService can't be nil")
}
return nil
}
// Start the server.
func (s *Server) Start() {
s.router = *chi.NewRouter()
s.writer.logger = s.Logger
s.writer.traceExtractor = s.TraceExtractor
s.initMiddleware()
s.initHandler()
// The HTTP server uses a static configuration. In the case that we need to change this setting in the future, we
// could consider moving it to a configuration file.
s.server = http.Server{
ReadTimeout: 10 * time.Second,
ReadHeaderTimeout: 20 * time.Second,
WriteTimeout: 10 * time.Second,
IdleTimeout: 30 * time.Second,
MaxHeaderBytes: maxBodySize,
Addr: ":8080",
Handler: &s.router,
}
go func() {
if err := s.server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
s.AsyncErrorHandler(fmt.Errorf("fail to start the http server: %w", err))
}
}()
}
// Stop the server.
func (s *Server) Stop(ctx context.Context) error {
if err := s.server.Shutdown(ctx); err != nil {
return fmt.Errorf("fail to close the http server: %w", err)
}
return nil
}
func (s *Server) initMiddleware() {
m := middleware{log: s.Logger, writer: s.writer, traceExtractor: s.TraceExtractor}
s.router.Use(m.recoverer)
s.router.Use(m.timeout(5 * time.Second))
s.router.Use(m.datadogTracer)
s.router.Use(chiMiddleware.NoCache)
s.router.Use(chiMiddleware.RealIP)
s.router.Use(chiMiddleware.RequestID)
s.router.Use(chiMiddleware.StripSlashes)
s.router.Use(chiMiddleware.NewCompressor(5).Handler)
s.router.Use(m.logger)
s.router.Use(m.limitReader(maxBodySize))
}
func (s *Server) initHandler() {
h := handler{
writer: s.writer,
logger: s.Logger,
traceExtractor: s.TraceExtractor,
documentService: s.DocumentService,
}
s.router.MethodNotAllowed(h.methodNotAllowed)
s.router.NotFound(h.notFound)
s.router.Get("/health", h.health)
s.router.Get("/documents/dropbox/*", h.document)
s.router.Get("/documents/*", h.document)
}