irony mode not working in spacemacs

[pyang-1981]

My spacemacs c-c++ layer package.el looks like this

(setq c-c++-packages
'(
cc-mode
disaster
clang-format
cmake-mode
company
(company-c-headers :toggle (configuration-layer/package-usedp 'company))
company-ycmd
flycheck
gdb-mi
ggtags
helm-cscope
helm-gtags
semantic
srefactor
stickyfunc-enhance
ycmd
xcscope
irony
company-irony
company-irony-c-headers
flycheck-irony
))

(defun c-c++/init-flycheck-irony ()
(use-package flycheck-irony
:defer t
)
)

(defun c-c++/post-init-flycheck-irony ()
(eval-after-load 'flycheck
'(add-hook 'flycheck-mode-hook #'flycheck-irony-setup))
)

(defun c-c++/init-irony ()
(use-package irony
:defer t
)
)

(defun c-c++/post-init-irony ()
(spacemacs/add-to-hooks 'irony-mode '(c-mode-hook c++-mode-hook))
(defun my-irony-mode-hook ()
(define-key irony-mode-map [remap completion-at-point]
'irony-completion-at-point-async)
(define-key irony-mode-map [remap complete-symbol]
'irony-completion-at-point-async))
(spacemacs/add-to-hooks 'my-irony-mode-hook '(irony-mode-hook))
(spacemacs/add-to-hooks 'irony-cdb-autosetup-compile-options '(irony-mode-hook))
)

(defun c-c++/init-company-irony ()
(use-package company-irony
:defer t
)
)

(defun c-c++/post-init-company-irony ()
(eval-after-load 'company
'(add-to-list 'company-backends 'company-irony))
)

(defun c-c++/init-company-irony-c-headers ()
(use-package company-irony-c-headers
:defer t
)
)

(defun c-c++/post-init-company-irony-c-headers ()
;; Load with irony-mode as a grouped backend
(eval-after-load 'company
'(add-to-list
'company-backends 'company-irony-c-headers))
)

When I open a C++ file, the irony mode and company-irony are enabled. However I am only able to get some functions defined by irony, such as irony-get-type, other functions like irony-cdb-compilation-database are not defined. Also, code completion for the most part does not work. Any help is greatly appreciated. The irony version is 1.3.1