Reviewers: tandrii(chromium),

Message:
PTAL

Description:
Refactor version increment in release scripts.

BUG=chromium:451975
[email protected]
NOTRY=true
LOG=n

Please review this at https://codereview.chromium.org/870903003/

Base URL: https://chromium.googlesource.com/v8/v8.git@master

Affected files (+38, -32 lines):
  M tools/release/common_includes.py
  M tools/release/push_to_candidates.py
  M tools/release/test_scripts.py


Index: tools/release/common_includes.py
diff --git a/tools/release/common_includes.py b/tools/release/common_includes.py index 40c47b2871e40faac6b75daa8cbfe6ddfd30efc1..65cf8572bb8f204d715786816febda64a41d1016 100644
--- a/tools/release/common_includes.py
+++ b/tools/release/common_includes.py
@@ -47,6 +47,7 @@ from git_recipes import GitFailedException

 CHANGELOG_FILE = "ChangeLog"
 VERSION_FILE = os.path.join("src", "version.cc")
+VERSION_RE = re.compile(r"^\d+\.\d+\.\d+(?:\.\d+)?$")

 # V8 base directory.
 V8_BASE = os.path.dirname(
@@ -380,7 +381,7 @@ class Step(GitRecipesMixin):
   def __getitem__(self, key):
     # Convenience method to allow direct [] access on step classes for
     # manipulating the backed state dict.
-    return self._state[key]
+    return self._state.get(key)

   def __setitem__(self, key, value):
     # Convenience method to allow direct [] access on step classes for
@@ -589,6 +590,20 @@ class Step(GitRecipesMixin):
     except GitFailedException:
       self.WaitForResolvingConflicts(patch_file)

+  def GetLatestVersion(self):
+    # Use cached version if available.
+    if self["latest_version"]:
+      return self["latest_version"]
+
+    # Make sure tags are fetched.
+    self.Git("fetch origin +refs/tags/*:refs/tags/*")
+    version_parts = sorted(filter(VERSION_RE.match, self.vc.GetTags()),
+                           key=SortingKey, reverse=True)[0].split(".")
+    if len(version_parts) == 3:
+      version_parts.append("0")
+    self["latest_version"] = ".".join(version_parts)
+    return self["latest_version"]
+
   def FindLastCandidatesPush(
       self, parent_hash="", branch="", include_patches=False):
     push_pattern = "^Version [[:digit:]]*\.[[:digit:]]*\.[[:digit:]]*"
Index: tools/release/push_to_candidates.py
diff --git a/tools/release/push_to_candidates.py b/tools/release/push_to_candidates.py index 9da0fde1a0a62a6132f8f37abad9f1f1eb032448..6f71a5b851ede917dcd2447f4ae2c2b90a1e5a1e 100755
--- a/tools/release/push_to_candidates.py
+++ b/tools/release/push_to_candidates.py
@@ -45,9 +45,6 @@ class Preparation(Step):
     self.InitialEnvironmentChecks(self.default_cwd)
     self.CommonPrepare()

-    # Make sure tags are fetched.
-    self.Git("fetch origin +refs/tags/*:refs/tags/*")
-
     if(self["current_branch"] == self.Config("CANDIDATESBRANCH")
        or self["current_branch"] == self.Config("BRANCHNAME")):
       print "Warning: Script started on branch %s" % self["current_branch"]
@@ -114,37 +111,29 @@ class DetectLastPush(Step):
     self["last_push_master"] = last_push_master


-class GetLatestVersion(Step):
-  MESSAGE = "Get latest version from tags."
+class IncrementVersion(Step):
+  MESSAGE = "Increment version number."

   def RunStep(self):
-    versions = sorted(filter(VERSION_RE.match, self.vc.GetTags()),
-                      key=SortingKey, reverse=True)
-    self.StoreVersion(versions[0], "latest_")
-    self["latest_version"] = self.ArrayToVersion("latest_")
+    latest_version = self.GetLatestVersion()

     # The version file on master can be used to bump up major/minor at
     # branch time.
     self.GitCheckoutFile(VERSION_FILE, self.vc.RemoteMasterBranch())
     self.ReadAndPersistVersion("master_")
-    self["master_version"] = self.ArrayToVersion("master_")
-
- if SortingKey(self["master_version"]) > SortingKey(self["latest_version"]):
-      self["latest_version"] = self["master_version"]
-      self.StoreVersion(self["latest_version"], "latest_")
-
-    print "Determined latest version %s" % self["latest_version"]
+    master_version = self.ArrayToVersion("master_")

+    # Use the highest version from master or from tags to determine the new
+    # version.
+    authoritative_version = sorted(
+        [master_version, latest_version], key=SortingKey)[1]
+    self.StoreVersion(authoritative_version, "authoritative_")

-class IncrementVersion(Step):
-  MESSAGE = "Increment version number."
-
-  def RunStep(self):
# Variables prefixed with 'new_' contain the new version numbers for the
     # ongoing candidates push.
-    self["new_major"] = self["latest_major"]
-    self["new_minor"] = self["latest_minor"]
-    self["new_build"] = str(int(self["latest_build"]) + 1)
+    self["new_major"] = self["authoritative_major"]
+    self["new_minor"] = self["authoritative_minor"]
+    self["new_build"] = str(int(self["authoritative_build"]) + 1)

     # Make sure patch level is 0 in a new push.
     self["new_patch"] = "0"
@@ -153,6 +142,8 @@ class IncrementVersion(Step):
                                     self["new_minor"],
                                     self["new_build"])

+    print ("Incremented version to %s" % self["version"])
+

 class PrepareChangeLog(Step):
   MESSAGE = "Prepare raw ChangeLog entry."
@@ -429,7 +420,6 @@ class PushToCandidates(ScriptsBase):
       FreshBranch,
       PreparePushRevision,
       DetectLastPush,
-      GetLatestVersion,
       IncrementVersion,
       PrepareChangeLog,
       EditChangeLog,
Index: tools/release/test_scripts.py
diff --git a/tools/release/test_scripts.py b/tools/release/test_scripts.py
index d6378f1dd2631545aff505a38f912fa205492646..e4df4f5b5d32e4f63b64b6df4e2108abce861b43 100644
--- a/tools/release/test_scripts.py
+++ b/tools/release/test_scripts.py
@@ -623,19 +623,20 @@ test_tag

   # Version as tag: 3.22.4.0. Version on master: 3.22.6.
   # Make sure that the latest version is 3.22.6.0.
-  def testGetLatestVersion(self):
+  def testIncrementVersion(self):
     self.Expect([
+      Cmd("git fetch origin +refs/tags/*:refs/tags/*", ""),
       Cmd("git tag", self.TAGS),
       Cmd("git checkout -f origin/master -- src/version.cc",
           "", cb=lambda: self.WriteFakeVersionFile(22, 6)),
     ])

-    self.RunStep(PushToCandidates, GetLatestVersion)
+    self.RunStep(PushToCandidates, IncrementVersion)

-    self.assertEquals("3", self._state["latest_major"])
-    self.assertEquals("22", self._state["latest_minor"])
-    self.assertEquals("6", self._state["latest_build"])
-    self.assertEquals("0", self._state["latest_patch"])
+    self.assertEquals("3", self._state["new_major"])
+    self.assertEquals("22", self._state["new_minor"])
+    self.assertEquals("7", self._state["new_build"])
+    self.assertEquals("0", self._state["new_patch"])

   def _TestSquashCommits(self, change_log, expected_msg):
     TEST_CONFIG["CHANGELOG_ENTRY_FILE"] = self.MakeEmptyTempFile()
@@ -778,7 +779,6 @@ Performance and stability improvements on all platforms."""
       Cmd("git status -s -uno", ""),
       Cmd("git status -s -b -uno", "## some_branch\n"),
       Cmd("git fetch", ""),
-      Cmd("git fetch origin +refs/tags/*:refs/tags/*", ""),
       Cmd("git branch", "  branch1\n* branch2\n"),
       Cmd("git branch", "  branch1\n* branch2\n"),
       Cmd(("git new-branch %s --upstream origin/master" %
@@ -794,6 +794,7 @@ Performance and stability improvements on all platforms."""
     expectations += [
       Cmd("git log -1 --format=%s hash2",
        "Version 3.4.5 (based on abc3)\n"),
+      Cmd("git fetch origin +refs/tags/*:refs/tags/*", ""),
       Cmd("git tag", self.TAGS),
       Cmd("git checkout -f origin/master -- src/version.cc",
           "", cb=self.WriteFakeVersionFile),


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