frostfs-rest-gw/handlers/api.go

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package handlers
import (
"context"
"fmt"
"net/http"
"strings"
"github.com/go-openapi/errors"
"github.com/google/uuid"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neofs-rest-gw/gen/models"
"github.com/nspcc-dev/neofs-rest-gw/gen/restapi/operations"
"github.com/nspcc-dev/neofs-sdk-go/pool"
"go.uber.org/zap"
)
// API is a REST v1 request handler.
type API struct {
log *zap.Logger
pool *pool.Pool
key *keys.PrivateKey
defaultTimestamp bool
}
// PrmAPI groups parameters to init rest API.
type PrmAPI struct {
Logger *zap.Logger
Pool *pool.Pool
Key *keys.PrivateKey
DefaultTimestamp bool
}
type BearerToken struct {
Token string
Signature string
Key string
}
// ContextKey is used for context.Context value. The value requires a key that is not primitive type.
type ContextKey string
const (
// BearerPrefix is the prefix for authorization token
BearerPrefix = "Bearer "
// ContextKeyRequestID is the ContextKey for RequestID
ContextKeyRequestID ContextKey = "requestID"
)
// New creates a new API using specified logger, connection pool and other parameters.
func New(prm *PrmAPI) *API {
return &API{
log: prm.Logger,
pool: prm.Pool,
key: prm.Key,
defaultTimestamp: prm.DefaultTimestamp,
}
}
func (a *API) Configure(api *operations.NeofsRestGwAPI) http.Handler {
api.ServeError = errors.ServeError
api.AuthHandler = operations.AuthHandlerFunc(a.PostAuth)
api.PutObjectHandler = operations.PutObjectHandlerFunc(a.PutObjects)
api.PutContainerHandler = operations.PutContainerHandlerFunc(a.PutContainers)
api.GetContainerHandler = operations.GetContainerHandlerFunc(a.GetContainer)
api.BearerAuthAuth = func(s string) (*models.Principal, error) {
if !strings.HasPrefix(s, BearerPrefix) {
return nil, fmt.Errorf("has not bearer token")
}
if s = strings.TrimPrefix(s, BearerPrefix); len(s) == 0 {
return nil, fmt.Errorf("bearer token is empty")
}
return (*models.Principal)(&s), nil
}
api.PreServerShutdown = func() {}
api.ServerShutdown = func() {}
return a.setupGlobalMiddleware(api.Serve(setupMiddlewares))
}
// The middleware configuration is for the handler executors. These do not apply to the swagger.json document.
// The middleware executes after routing but before authentication, binding and validation.
func setupMiddlewares(handler http.Handler) http.Handler {
return handler
}
// The middleware configuration happens before anything, this middleware also applies to serving the swagger.json document.
// So this is a good place to plug in a panic handling middleware, logging and metrics.
func (a *API) setupGlobalMiddleware(handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
requestID := uuid.NewString()
a.log.Info("request", zap.String("remote", r.RemoteAddr),
zap.String("method", r.Method), zap.String("uri", r.RequestURI),
zap.String("id", requestID))
ctx := context.WithValue(r.Context(), ContextKeyRequestID, requestID)
handler.ServeHTTP(w, r.WithContext(ctx))
})
}