Golang Request.Storage方法代码示例

// Route is used to route a given request
func (r *Router) Route(req *logical.Request) (*logical.Response, error) {
	// Find the mount point
	r.l.RLock()
	mount, raw, ok := r.root.LongestPrefix(req.Path)
	if !ok {
		// Re-check for a backend by appending a slash. This lets "foo" mean
		// "foo/" at the root level which is almost always what we want.
		req.Path += "/"
		mount, raw, ok = r.root.LongestPrefix(req.Path)
	}
	r.l.RUnlock()
	if !ok {
		return nil, fmt.Errorf("no handler for route '%s'", req.Path)
	}
	defer metrics.MeasureSince([]string{"route", string(req.Operation),
		strings.Replace(mount, "/", "-", -1)}, time.Now())
	me := raw.(*mountEntry)

	// If the path is tainted, we reject any operation except for
	// Rollback and Revoke
	if me.tainted {
		switch req.Operation {
		case logical.RevokeOperation, logical.RollbackOperation:
		default:
			return nil, fmt.Errorf("no handler for route '%s'", req.Path)
		}
	}

	// Determine if this path is an unauthenticated path before we modify it
	loginPath := r.LoginPath(req.Path)

	// Adjust the path to exclude the routing prefix
	original := req.Path
	req.Path = strings.TrimPrefix(req.Path, mount)
	if req.Path == "/" {
		req.Path = ""
	}

	// Attach the storage view for the request
	req.Storage = me.view

	// Hash the request token unless this is the token backend
	clientToken := req.ClientToken
	if !strings.HasPrefix(original, "auth/token/") {
		req.ClientToken = me.SaltID(req.ClientToken)
	}

	// If the request is not a login path, then clear the connection
	originalConn := req.Connection
	if !loginPath {
		req.Connection = nil
	}

	// Reset the request before returning
	defer func() {
		req.Path = original
		req.Connection = originalConn
		req.Storage = nil
		req.ClientToken = clientToken
	}()

	// Invoke the backend
	return me.backend.HandleRequest(req)
}

func (r *Router) routeCommon(req *logical.Request, existenceCheck bool) (*logical.Response, bool, bool, error) {
	// Find the mount point
	r.l.RLock()
	mount, raw, ok := r.root.LongestPrefix(req.Path)
	if !ok {
		// Re-check for a backend by appending a slash. This lets "foo" mean
		// "foo/" at the root level which is almost always what we want.
		req.Path += "/"
		mount, raw, ok = r.root.LongestPrefix(req.Path)
	}
	r.l.RUnlock()
	if !ok {
		return logical.ErrorResponse(fmt.Sprintf("no handler for route '%s'", req.Path)), false, false, logical.ErrUnsupportedPath
	}
	defer metrics.MeasureSince([]string{"route", string(req.Operation),
		strings.Replace(mount, "/", "-", -1)}, time.Now())
	re := raw.(*routeEntry)

	// If the path is tainted, we reject any operation except for
	// Rollback and Revoke
	if re.tainted {
		switch req.Operation {
		case logical.RevokeOperation, logical.RollbackOperation:
		default:
			return logical.ErrorResponse(fmt.Sprintf("no handler for route '%s'", req.Path)), false, false, logical.ErrUnsupportedPath
		}
	}

	// Adjust the path to exclude the routing prefix
	originalPath := req.Path
	req.Path = strings.TrimPrefix(req.Path, mount)
	req.MountPoint = mount
	if req.Path == "/" {
		req.Path = ""
	}

	// Attach the storage view for the request
	req.Storage = re.storageView

	// Hash the request token unless this is the token backend
	clientToken := req.ClientToken
	switch {
	case strings.HasPrefix(originalPath, "auth/token/"):
	case strings.HasPrefix(originalPath, "sys/"):
	case strings.HasPrefix(originalPath, "cubbyhole/"):
		// In order for the token store to revoke later, we need to have the same
		// salted ID, so we double-salt what's going to the cubbyhole backend
		req.ClientToken = re.SaltID(r.tokenStoreSalt.SaltID(req.ClientToken))
	default:
		req.ClientToken = re.SaltID(req.ClientToken)
	}

	// Cache the pointer to the original connection object
	originalConn := req.Connection

	// Cache the identifier of the request
	originalReqID := req.ID

	// Cache the wrap TTL of the request
	originalWrapTTL := req.WrapTTL

	// Reset the request before returning
	defer func() {
		req.Path = originalPath
		req.MountPoint = ""
		req.Connection = originalConn
		req.ID = originalReqID
		req.Storage = nil
		req.ClientToken = clientToken

		// Only the rewrap endpoint is allowed to declare a wrap TTL on a
		// request that did not come from the client
		if req.Path != "sys/wrapping/rewrap" {
			req.WrapTTL = originalWrapTTL
		}
	}()

	// Invoke the backend
	if existenceCheck {
		ok, exists, err := re.backend.HandleExistenceCheck(req)
		return nil, ok, exists, err
	} else {
		resp, err := re.backend.HandleRequest(req)
		return resp, false, false, err
	}
}