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app.go
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/
app.go
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package main
import (
"net/http"
"github.com/sirupsen/logrus"
)
// Defaults
var (
defaultLogger = logrus.New().WithFields(nil)
)
// App is the main application
type App struct {
db *DB
log *logrus.Entry
}
// NewApp creates a new App, customized with the given options
func NewApp(db *DB, opts ...AppOption) *App {
app := &App{
db: db,
log: defaultLogger,
}
for _, opt := range opts {
opt(app)
}
return app
}
// AppOption customizes an App
type AppOption func(a *App)
// WithLogger sets the logger for an App
func WithLogger(log *logrus.Entry) AppOption {
return func(a *App) {
a.log = log
}
}
// Handler handles requests
func (a *App) Handler() http.Handler {
mux := http.NewServeMux()
mux.HandleFunc("/healthz", a.HandleHealthz)
return mux
}
// HandleHealthz receives health check requests
func (a *App) HandleHealthz(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("OK\n"))
}
func errResponse(w http.ResponseWriter, code int) {
http.Error(w, http.StatusText(code), code)
}