VTL: Fix sphinx doc generation.

Remove unnecessary envvar magic for sphinx builds.
Just provide the proper mock objects.

Change-Id: I151513eb47d2f71cf221651145dbcdc153448772
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>

test/Makefile

@@ -206,7 +206,7 @@ wipe: reset
 doc: verify-test-dir $(PIP_PATCH_DONE)
 	@virtualenv $(VENV_PATH) -p python3
 	@bash -c "source $(VENV_PATH)/bin/activate && python3 -m pip install sphinx sphinx-rtd-theme"
-	@bash -c "source $(VENV_PATH)/bin/activate && make -C doc WS_ROOT=$(WS_ROOT) BR=$(BR) NO_VPP_PAPI=1 html"
+	@bash -c "source $(VENV_PATH)/bin/activate && make -C doc WS_ROOT=$(WS_ROOT) BR=$(BR) html"
 
 .PHONY: wipe-doc
 

test/doc/conf.py

@@ -20,7 +20,6 @@ import os
 import sys
 sys.path.insert(0, os.path.abspath('..'))
 
-
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
@@ -33,6 +32,9 @@ sys.path.insert(0, os.path.abspath('..'))
 extensions = [
     'sphinx.ext.autodoc',
 ]
+autodoc_mock_imports = ['objgraph',
+                        'pympler',
+                        'vpp_papi']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -122,7 +124,7 @@ todo_include_todos = False
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-#html_theme = 'alabaster'
+# html_theme = 'alabaster'
 html_theme = 'sphinx_rtd_theme'
 
 # Theme options are theme-specific and customize the look and feel of a theme
@@ -149,8 +151,8 @@ html_theme = 'sphinx_rtd_theme'
 # html_logo = None
 
 # The name of an image file (relative to this directory) to use as a favicon of
-# the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
-# pixels large.
+# the docs.  This file should be a Windows icon file (.ico) being 16x16 or
+# 32x32 pixels large.
 #
 # html_favicon = None
 

test/vpp_papi_provider.py

@@ -4,22 +4,10 @@ import time
 from collections import deque
 
 from six import moves
-from vpp_papi import mac_pton
+from vpp_papi import VPP, mac_pton
 from hook import Hook
 from vpp_l2 import L2_PORT_TYPE
 
-# Sphinx creates auto-generated documentation by importing the python source
-# files and collecting the docstrings from them. The NO_VPP_PAPI flag allows
-# the vpp_papi_provider.py file to be importable without having to build
-# the whole vpp api if the user only wishes to generate the test documentation.
-
-try:
-    from vpp_papi import VPP
-except ImportError:
-    if not os.getenv("NO_VPP_PAPI") == 1:
-        raise
-    pass
-
 # from vnet/vnet/mpls/mpls_types.h
 MPLS_IETF_MAX_LABEL = 0xfffff
 MPLS_LABEL_INVALID = MPLS_IETF_MAX_LABEL + 1