From 7810e47e7d7c90b0e3df8e251964a38ebff9d978 Mon Sep 17 00:00:00 2001
From: Martin Wicke <577277+martinwicke@users.noreply.github.com>
Date: Mon, 16 Apr 2018 11:56:46 -0700
Subject: [PATCH] Merge pull request #18568 from
 case540/enable_git_tag_override

Add ability to override git tag in __git_version__ string.
---
 tensorflow/tensorflow.bzl              |  2 +-
 tensorflow/tools/git/gen_git_source.py | 37 +++++++++++++++++++++-----
 2 files changed, 31 insertions(+), 8 deletions(-)

diff --git a/tensorflow/tensorflow.bzl b/tensorflow/tensorflow.bzl
index 528f811b40a..b286834ded3 100644
--- a/tensorflow/tensorflow.bzl
+++ b/tensorflow/tensorflow.bzl
@@ -1704,7 +1704,7 @@ def tf_version_info_genrule():
       ],
       outs=["util/version_info.cc"],
       cmd=
-      "$(location //tensorflow/tools/git:gen_git_source.py) --generate $(SRCS) \"$@\"",
+      "$(location //tensorflow/tools/git:gen_git_source.py) --generate $(SRCS) \"$@\" --git_tag_override=$${GIT_TAG_OVERRIDE:-}",
       local=1,
       tools=[clean_dep("//tensorflow/tools/git:gen_git_source.py")],)
 
diff --git a/tensorflow/tools/git/gen_git_source.py b/tensorflow/tools/git/gen_git_source.py
index cbcdbf5b807..db2580755b9 100755
--- a/tensorflow/tools/git/gen_git_source.py
+++ b/tensorflow/tools/git/gen_git_source.py
@@ -139,7 +139,7 @@ def configure(src_base_path, gen_path, debug=False):
     print("gen_git_source.py: spec is %r" % spec)
 
 
-def get_git_version(git_base_path):
+def get_git_version(git_base_path, git_tag_override):
   """Get the git version from the repository.
 
   This function runs `git describe ...` in the path given as `git_base_path`.
@@ -152,6 +152,9 @@ def get_git_version(git_base_path):
 
   Args:
     git_base_path: where the .git directory is located
+    git_tag_override: Override the value for the git tag. This is useful for
+      releases where we want to build the release before the git tag is
+      created.
   Returns:
     A bytestring representing the git version
   """
@@ -161,6 +164,14 @@ def get_git_version(git_base_path):
         "git", str("--git-dir=%s/.git" % git_base_path),
         str("--work-tree=" + git_base_path), "describe", "--long", "--tags"
     ]).strip())
+    if git_tag_override:
+      split_val = val.split("-")
+      if len(split_val) != 3:
+        raise Exception(
+            ("Expected git version in format 'TAG-COMMITS AFTER TAG-HASH' "
+             "but got '%s'") % val)
+      split_val[0] = git_tag_override
+      val = bytes("-".join(split_val))
     return val if val else unknown_label
   except subprocess.CalledProcessError:
     return unknown_label
@@ -197,7 +208,7 @@ const int tf_monolithic_build() {
   open(filename, "w").write(contents)
 
 
-def generate(arglist):
+def generate(arglist, git_tag_override=None):
   """Generate version_info.cc as given `destination_file`.
 
   Args:
@@ -217,6 +228,10 @@ def generate(arglist):
   `ref_symlink` is unused in this script but passed, because the build
     system uses that file to detect when commits happen.
 
+    git_tag_override: Override the value for the git tag. This is useful for
+      releases where we want to build the release before the git tag is
+      created.
+
   Raises:
     RuntimeError: If ./configure needs to be run, RuntimeError will be raised.
   """
@@ -234,11 +249,11 @@ def generate(arglist):
       raise RuntimeError(
           "Run ./configure again, branch was '%s' but is now '%s'" %
           (old_branch, new_branch))
-    git_version = get_git_version(data["path"])
+    git_version = get_git_version(data["path"], git_tag_override)
   write_version_info(dest_file, git_version)
 
 
-def raw_generate(output_file):
+def raw_generate(output_file, git_tag_override=None):
   """Simple generator used for cmake/make build systems.
 
   This does not create any symlinks. It requires the build system
@@ -246,9 +261,12 @@ def raw_generate(output_file):
 
   Args:
     output_file: Output filename for the version info cc
+    git_tag_override: Override the value for the git tag. This is useful for
+      releases where we want to build the release before the git tag is
+      created.
   """
 
-  git_version = get_git_version(".")
+  git_version = get_git_version(".", git_tag_override)
   write_version_info(output_file, git_version)
 
 
@@ -270,6 +288,11 @@ parser.add_argument(
     "--gen_root_path", type=str,
     help="Root path to place generated git files (created by --configure).")
 
+parser.add_argument(
+    "--git_tag_override", type=str,
+    help="Override git tag value in the __git_version__ string. Useful when "
+         "creating release builds before the release tag is created.")
+
 parser.add_argument(
     "--generate",
     type=str,
@@ -288,9 +311,9 @@ if args.configure is not None:
     raise RuntimeError("Must pass --gen_root_path arg when running --configure")
   configure(args.configure, args.gen_root_path, debug=args.debug)
 elif args.generate is not None:
-  generate(args.generate)
+  generate(args.generate, args.git_tag_override)
 elif args.raw_generate is not None:
-  raw_generate(args.raw_generate)
+  raw_generate(args.raw_generate, args.git_tag_override)
 else:
   raise RuntimeError("--configure or --generate or --raw_generate "
                      "must be used")