[PATCH 6/7] fetch2: add symlinks for mirror tarballs

["Urs Fässler" <urs.fassler@bbv.ch>]

In the unpack step the mirror tarball is not found when the mirrored
tarball is named differently than the original tarball. This happens
due to mirror rewrite rules. To solve the problem we add symlinks for
the differently named tarballs.

Signed-off-by: Urs Fässler <urs.fassler@bbv.ch>
Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
---
 lib/bb/fetch2/__init__.py |  4 +++
 lib/bb/tests/fetch.py     | 53 ++++++++++++++++++++++++++++++++++++++-
 2 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/lib/bb/fetch2/__init__.py b/lib/bb/fetch2/__init__.py
index 458f3107..a1b03a95 100644
--- a/lib/bb/fetch2/__init__.py
+++ b/lib/bb/fetch2/__init__.py
@@ -1017,6 +1017,10 @@ def try_mirror_url(fetch, origud, ud, ld, check = False):
             return origud.localpath
         # Otherwise the result is a local file:// and we symlink to it
         ensure_symlink(ud.localpath, origud.localpath)
+
+        if os.path.exists(ud.fullmirror):
+            ensure_symlink(ud.fullmirror, origud.fullmirror)
+
         update_stamp(origud, ld)
         return ud.localpath
 
diff --git a/lib/bb/tests/fetch.py b/lib/bb/tests/fetch.py
index 9bed06ba..1cd4c65c 100644
--- a/lib/bb/tests/fetch.py
+++ b/lib/bb/tests/fetch.py
@@ -29,6 +29,20 @@ from bb.fetch2 import URI
 from bb.fetch2 import FetchMethod
 import bb
 
+
+def get_broken_symlinks(directory):
+    result = []
+
+    dir = os.listdir(directory)
+    for filename in dir:
+        fullname = directory + '/' + filename
+        broken = (not os.path.exists(fullname)) and os.path.islink(fullname)
+        if broken:
+            result += [filename]
+
+    return result
+
+
 def skipIfNoNetwork():
     if os.environ.get("BB_SKIP_NETTESTS") == "yes":
         return unittest.skip("Network tests being skipped")
@@ -536,7 +550,7 @@ class TarballNamingTest(FetcherTest):
         self.assertIn(self.recipe_tarball, dir)
 
     @skipIfNoNetwork()
-    def test_that_the_mirror_tarball_is_created_when_mirroring_is_used(self):
+    def test_that_tarball_for_mirrored_url_and_recipe_url_exists_when_mirroring_is_used(self):
         self.setup_mirror_rewrite()
         fetcher = bb.fetch.Fetch([self.recipe_url], self.d)
 
@@ -544,6 +558,7 @@ class TarballNamingTest(FetcherTest):
 
         dir = os.listdir(self.dldir)
         self.assertIn(self.mirror_tarball, dir)
+        self.assertIn(self.recipe_tarball, dir)
 
 
 class GitShallowTarballNamingTest(FetcherTest):
@@ -881,6 +896,12 @@ class FetcherNetworkTest(FetcherTest):
         self.d.setVar("PREMIRRORS", "git://someserver.org/bitbake git://git.openembedded.org/bitbake \n")
         self.gitfetcher(recipeurl, recipeurl)
 
+    @skipIfNoNetwork()
+    def test_gitfetch_finds_local_tarball_when_previous_downloaded_from_a_mirror(self):
+        recipeurl = "git://git.wrong.org/bitbake"
+        self.d.setVar("MIRRORS", "git://git.wrong.org/bitbake git://git.openembedded.org/bitbake \n")
+        self.gitfetcher(recipeurl, recipeurl)
+
     @skipIfNoNetwork()
     def test_gitfetch_finds_local_repository_when_premirror_rewrites_the_recipe_url(self):
         realurl = "git://git.openembedded.org/bitbake"
@@ -891,6 +912,36 @@ class FetcherNetworkTest(FetcherTest):
         self.d.setVar("PREMIRRORS", "%s git://%s;protocol=file \n" % (recipeurl, self.sourcedir))
         self.gitfetcher(recipeurl, recipeurl)
 
+    @skipIfNoNetwork()
+    def test_gitfetch_uses_the_git_tarball_when_using_mirror_rewrite_rules_and_the_git_clone_does_not_exist(self):
+        self.d.setVar('SRCREV', 'e5939ff608b95cdd4d0ab0e1935781ab9a276ac0')
+        self.d.setVar('BB_GENERATE_MIRROR_TARBALLS', '1')
+        self.d.setVar('PREMIRRORS', 'git://git.yoctoproject.org/.* git://git.yoctoproject.org/git/PATH;protocol=https \n')
+        fetcher = bb.fetch.Fetch(["git://git.yoctoproject.org/fstests"], self.d)
+        fetcher.download()
+        bb.utils.prunedir(self.dldir + '/git2')
+        bb.utils.prunedir(self.unpackdir)
+        self.d.setVar('PREMIRRORS', '')
+        self.d.setVar('BB_FETCH_PREMIRRORONLY', '1')
+
+        fetcher.download()
+
+        fetcher.unpack(self.unpackdir)
+        dir = os.listdir(self.unpackdir + "/git/")
+        self.assertIn("fstests.doap", dir)
+
+    @skipIfNoNetwork()
+    def test_that_no_broken_symlinks_exist_when_using_mirror_rewrite_rules_and_no_tarball(self):
+        self.d.setVar('SRCREV', 'e5939ff608b95cdd4d0ab0e1935781ab9a276ac0')
+        self.d.setVar('BB_GENERATE_MIRROR_TARBALLS', '0')
+        self.d.setVar('PREMIRRORS', 'git://git.yoctoproject.org/.* git://git.yoctoproject.org/git/PATH;protocol=https \n')
+        fetcher = bb.fetch.Fetch(["git://git.yoctoproject.org/fstests"], self.d)
+
+        fetcher.download()
+
+        broken_symlinks = get_broken_symlinks(self.dldir)
+        self.assertEqual([], broken_symlinks)
+
     @skipIfNoNetwork()
     def test_git_submodule(self):
         fetcher = bb.fetch.Fetch(["gitsm://git.yoctoproject.org/git-submodule-test;rev=f12e57f2edf0aa534cf1616fa983d165a92b0842"], self.d)
-- 
2.19.1