From c1a5e26fd905df829c6e2bbc24b0500af4a5b357 Mon Sep 17 00:00:00 2001
From: Tianjie Xu <xunchang@google.com>
Date: Wed, 22 May 2019 14:34:12 -0700
Subject: Implement an update simulator to verify BB OTA packages on host

Implement the simulator runtime and build the updater simulator as a host
executable. The code to parse the target-files and mocks the block devices
will be submitted in the follow-up.

Bug: 131911365
Test: unit tests pass

Change-Id: Ib1ba939aec8333ca68a45139514d772ad7a27ad8
---
 updater/Android.mk | 85 +++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 65 insertions(+), 20 deletions(-)

(limited to 'updater/Android.mk')

diff --git a/updater/Android.mk b/updater/Android.mk
index 0178239e0..b8b5e5a70 100644
--- a/updater/Android.mk
+++ b/updater/Android.mk
@@ -33,7 +33,6 @@ updater_common_static_libraries := \
     libfec \
     libfec_rs \
     libverity_tree \
-    libfs_mgr \
     libgtest_prod \
     liblog \
     liblp \
@@ -48,9 +47,24 @@ updater_common_static_libraries := \
     libcrypto \
     libcrypto_utils \
     libcutils \
-    libutils \
-    libtune2fs \
-    $(tune2fs_static_libraries)
+    libutils
+
+
+# Each library in TARGET_RECOVERY_UPDATER_LIBS should have a function
+# named "Register_<libname>()".  Here we emit a little C function that
+# gets #included by updater.cpp.  It calls all those registration
+# functions.
+# $(1): the path to the register.inc file
+# $(2): a list of TARGET_RECOVERY_UPDATER_LIBS
+define generate-register-inc
+    $(hide) mkdir -p $(dir $(1))
+    $(hide) echo "" > $(1)
+    $(hide) $(foreach lib,$(2),echo "extern void Register_$(lib)(void);" >> $(1);)
+    $(hide) echo "void RegisterDeviceExtensions() {" >> $(1)
+    $(hide) $(foreach lib,$(2),echo "  Register_$(lib)();" >> $(1);)
+    $(hide) echo "}" >> $(1)
+endef
+
 
 # updater (static executable)
 # ===============================
@@ -69,33 +83,26 @@ LOCAL_CFLAGS := \
     -Werror
 
 LOCAL_STATIC_LIBRARIES := \
-    libupdater \
+    libupdater_device \
+    libupdater_core \
     $(TARGET_RECOVERY_UPDATER_LIBS) \
     $(TARGET_RECOVERY_UPDATER_EXTRA_LIBS) \
-    $(updater_common_static_libraries)
+    $(updater_common_static_libraries) \
+    libfs_mgr \
+    libtune2fs \
+    $(tune2fs_static_libraries)
 
-# Each library in TARGET_RECOVERY_UPDATER_LIBS should have a function
-# named "Register_<libname>()".  Here we emit a little C function that
-# gets #included by updater.c.  It calls all those registration
-# functions.
+LOCAL_MODULE_CLASS := EXECUTABLES
+inc := $(call local-generated-sources-dir)/register.inc
 
 # Devices can also add libraries to TARGET_RECOVERY_UPDATER_EXTRA_LIBS.
 # These libs are also linked in with updater, but we don't try to call
 # any sort of registration function for these.  Use this variable for
 # any subsidiary static libraries required for your registered
 # extension libs.
-
-LOCAL_MODULE_CLASS := EXECUTABLES
-inc := $(call local-generated-sources-dir)/register.inc
-
 $(inc) : libs := $(TARGET_RECOVERY_UPDATER_LIBS)
 $(inc) :
-	$(hide) mkdir -p $(dir $@)
-	$(hide) echo "" > $@
-	$(hide) $(foreach lib,$(libs),echo "extern void Register_$(lib)(void);" >> $@;)
-	$(hide) echo "void RegisterDeviceExtensions() {" >> $@
-	$(hide) $(foreach lib,$(libs),echo "  Register_$(lib)();" >> $@;)
-	$(hide) echo "}" >> $@
+	$(call generate-register-inc,$@,$(libs))
 
 LOCAL_GENERATED_SOURCES := $(inc)
 
@@ -104,3 +111,41 @@ inc :=
 LOCAL_FORCE_STATIC_EXECUTABLE := true
 
 include $(BUILD_EXECUTABLE)
+
+
+# update_host_simulator (static executable)
+# ===============================
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := update_host_simulator
+
+LOCAL_SRC_FILES := \
+    update_simulator_main.cpp
+
+LOCAL_C_INCLUDES := \
+    $(LOCAL_PATH)/include
+
+LOCAL_CFLAGS := \
+    -Wall \
+    -Werror
+
+LOCAL_STATIC_LIBRARIES := \
+    libupdater_host \
+    libupdater_core \
+    $(TARGET_RECOVERY_UPDATER_HOST_LIBS) \
+    $(TARGET_RECOVERY_UPDATER_HOST_EXTRA_LIBS) \
+    $(updater_common_static_libraries) \
+    libfstab
+
+LOCAL_MODULE_CLASS := EXECUTABLES
+inc := $(call local-generated-sources-dir)/register.inc
+
+$(inc) : libs := $(TARGET_RECOVERY_UPDATER_HOST_LIBS)
+$(inc) :
+	$(call generate-register-inc,$@,$(libs))
+
+LOCAL_GENERATED_SOURCES := $(inc)
+
+inc :=
+
+include $(BUILD_HOST_EXECUTABLE)
-- 
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