Make gen_experiments.py runnable internally also

PiperOrigin-RevId: 591902705

tools/codegen/core/experiments_compiler.py

@@ -403,8 +403,9 @@ def GenerateExperimentsHdr(self, output_file, mode):
             if mode != "test":
                 include_guard = "GRPC_SRC_CORE_LIB_EXPERIMENTS_EXPERIMENTS_H"
             else:
-                file_path_list = output_file.split("/")[0:-1]
-                file_name = output_file.split("/")[-1].split(".")[0]
+                real_output_file = output_file.replace(".github", "")
+                file_path_list = real_output_file.split("/")[0:-1]
+                file_name = real_output_file.split("/")[-1].split(".")[0]
 
                 include_guard = f"GRPC_{'_'.join(path.upper() for path in file_path_list)}_{file_name.upper()}_H"
 
@@ -562,9 +563,13 @@ def GenerateExperimentsSrc(self, output_file, header_file_path, mode):
                     break
 
             print("#include <grpc/support/port_platform.h>", file=C)
+            print(file=C)
             if any_requires:
                 print("#include <stdint.h>", file=C)
-            print(f'#include "{header_file_path}"', file=C)
+                print(file=C)
+            print(
+                f'#include "{header_file_path.replace(".github", "")}"', file=C
+            )
             print(file=C)
             print("#ifndef GRPC_EXPERIMENTS_ARE_FINAL", file=C)
             idx = 0

tools/codegen/core/gen_experiments.py

@@ -23,11 +23,18 @@
 from __future__ import print_function
 
 import argparse
+import os
 import sys
 
 import experiments_compiler as exp
 import yaml
 
+REPO_ROOT = os.path.normpath(
+    os.path.join(os.path.dirname(__file__), "../../..")
+)
+print(REPO_ROOT)
+os.chdir(REPO_ROOT)
+
 DEFAULTS = {
     "broken": "false",
     False: "false",
@@ -86,6 +93,11 @@ def ParseCommandLineArguments(args):
 args = ParseCommandLineArguments(sys.argv[1:])
 
 
+def _InjectGithubPath(path):
+    base, ext = os.path.splitext(path)
+    return base + ".github" + ext
+
+
 def _GenerateExperimentFiles(args, mode):
     if mode == "test":
         _EXPERIMENTS_DEFS = (
@@ -96,11 +108,18 @@ def _GenerateExperimentFiles(args, mode):
         )
         _EXPERIMENTS_HDR_FILE = "test/core/experiments/fixtures/experiments.h"
         _EXPERIMENTS_SRC_FILE = "test/core/experiments/fixtures/experiments.cc"
+        _EXPERIMENTS_BZL_FILE = "bazel/test_experiments.bzl"
     else:
         _EXPERIMENTS_DEFS = "src/core/lib/experiments/experiments.yaml"
         _EXPERIMENTS_ROLLOUTS = "src/core/lib/experiments/rollouts.yaml"
         _EXPERIMENTS_HDR_FILE = "src/core/lib/experiments/experiments.h"
         _EXPERIMENTS_SRC_FILE = "src/core/lib/experiments/experiments.cc"
+        _EXPERIMENTS_BZL_FILE = "bazel/experiments.bzl"
+        if "/google3/" in REPO_ROOT:
+            _EXPERIMENTS_ROLLOUTS = _InjectGithubPath(_EXPERIMENTS_ROLLOUTS)
+            _EXPERIMENTS_HDR_FILE = _InjectGithubPath(_EXPERIMENTS_HDR_FILE)
+            _EXPERIMENTS_SRC_FILE = _InjectGithubPath(_EXPERIMENTS_SRC_FILE)
+            _EXPERIMENTS_BZL_FILE = _InjectGithubPath(_EXPERIMENTS_BZL_FILE)
 
     with open(_EXPERIMENTS_DEFS) as f:
         attrs = yaml.safe_load(f.read())
@@ -152,12 +171,12 @@ def _GenerateExperimentFiles(args, mode):
     )
 
     print("Generating experiments.bzl")
+    compiler.GenExperimentsBzl(mode, _EXPERIMENTS_BZL_FILE)
     if mode == "test":
-        compiler.GenExperimentsBzl(mode, "bazel/test_experiments.bzl")
         print("Generating experiments tests")
-        compiler.GenTest("test/core/experiments/experiments_test.cc")
-    else:
-        compiler.GenExperimentsBzl(mode, "bazel/experiments.bzl")
+        compiler.GenTest(
+            os.path.join(REPO_ROOT, "test/core/experiments/experiments_test.cc")
+        )
 
 
 _GenerateExperimentFiles(args, "production")