Add CMake rule for gen_fake_data (#1737)

Summary:
Pull Request resolved: #1737

# This stack
* Create a gen_fake_data script using C++ since the Python one takes ~12hr to process 1B rows
# This diff
* Add CMake rule so this binary is buildable in OSS

Reviewed By: marksliva

Differential Revision: D40386169

fbshipit-source-id: 573866ecfc1d0563064f7760aa3432db4bdbc216

docker/data_processing/CMakeLists.txt

@@ -135,3 +135,15 @@ target_link_libraries(
   idcombiner
   perftools)
 install(TARGETS attribution_id_combiner DESTINATION bin)
+
+# GenFakeData utility
+find_package(gflags REQUIRED)
+add_executable(
+  gen_fake_data
+  "fbpcs/data_processing/load_testing_utils/FakeDataGenerator.cpp"
+  "fbpcs/data_processing/load_testing_utils/GenFakeData.cpp")
+target_link_libraries(
+  gen_fake_data
+  gflags
+)
+install(TARGETS gen_fake_data DESTINATION bin)

docker/data_processing/Dockerfile.ubuntu

@@ -21,6 +21,7 @@ COPY fbpcs/data_processing/id_combiner/ ./fbpcs/data_processing/id_combiner
 COPY fbpcs/data_processing/lift_id_combiner/ ./fbpcs/data_processing/lift_id_combiner
 COPY fbpcs/data_processing/pid_preparer/ ./fbpcs/data_processing/pid_preparer
 COPY fbpcs/data_processing/sharding/ ./fbpcs/data_processing/sharding
+COPY fbpcs/data_processing/load_testing_utils/ ./fbpcs/data_processing/load_testing_utils
 
 RUN cmake . -DTHREADING=ON -DEMP_USE_RANDOM_DEVICE=ON
 RUN make && make install