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lib/repo: Add API to create and list ref aliases

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There are multiple use cases where we'd like to alias refs.

First, having a "stable" alias which gets swapped across major
versions: https://pagure.io/atomic-wg/issue/228

Another case is when a ref is obsoleted;
<https://pagure.io/atomic-wg/issue/303>
This second one could be done with endoflife rebase, but I think
this case is better on the server side, as we might later change
our minds and do actual releases there.

I initially just added some test cases for symlinks in the `refs/heads` dir to
ensure this actually works (and it did), but I think it's worth having APIs.

Closes: #1033
Approved by: jlebon
This commit is contained in:
Colin Walters authored and Atomic Bot committed 2017-08-02 17:33:10 +00:00
1 parent d1eb909cd0
commit d5273b34d0
8 files changed
+213 -33
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tests/test-refs.sh
+41 -1
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@@ -23,7 +23,7 @@ set -euo pipefail
setup_fake_remote_repo1 "archive-z2"
echo '1..1'
echo '1..2'
cd ${test_tmpdir}
mkdir repo
@@ -117,3 +117,43 @@ ${CMD_PREFIX} ostree --repo=repo refs | wc -l > refscount.create6
assert_file_has_content refscount.create6 "^11$"
echo "ok refs"
# Test symlinking a ref
${CMD_PREFIX} ostree --repo=repo refs ctest --create=exampleos/x86_64/26/server
${CMD_PREFIX} ostree --repo=repo refs -A exampleos/x86_64/26/server --create=exampleos/x86_64/stable/server
${CMD_PREFIX} ostree --repo=repo summary -u
${CMD_PREFIX} ostree --repo=repo refs > refs.txt
for v in 26 stable; do
assert_file_has_content refs.txt exampleos/x86_64/${v}/server
done
${CMD_PREFIX} ostree --repo=repo refs -A > refs.txt
assert_file_has_content_literal refs.txt 'exampleos/x86_64/stable/server -> exampleos/x86_64/26/server'
assert_not_file_has_content refs.txt '^exampleos/x86_64/26/server'
stable=$(${CMD_PREFIX} ostree --repo=repo rev-parse exampleos/x86_64/stable/server)
current=$(${CMD_PREFIX} ostree --repo=repo rev-parse exampleos/x86_64/26/server)
assert_streq "${stable}" "${current}"
${CMD_PREFIX} ostree --repo=repo commit -b exampleos/x86_64/26/server --tree=dir=tree
${CMD_PREFIX} ostree --repo=repo summary -u
newcurrent=$(${CMD_PREFIX} ostree --repo=repo rev-parse exampleos/x86_64/26/server)
assert_not_streq "${newcurrent}" "${current}"
newstable=$(${CMD_PREFIX} ostree --repo=repo rev-parse exampleos/x86_64/stable/server)
assert_streq "${newcurrent}" "${newstable}"
# Test that we can swap the symlink
${CMD_PREFIX} ostree --repo=repo commit -b exampleos/x86_64/27/server --tree=dir=tree
newcurrent=$(${CMD_PREFIX} ostree --repo=repo rev-parse exampleos/x86_64/27/server)
assert_not_streq "${newcurrent}" "${newstable}"
${CMD_PREFIX} ostree --repo=repo refs -A exampleos/x86_64/27/server --create=exampleos/x86_64/stable/server
newnewstable=$(${CMD_PREFIX} ostree --repo=repo rev-parse exampleos/x86_64/stable/server)
assert_not_streq "${newnewstable}" "${newstable}"
assert_streq "${newnewstable}" "${newcurrent}"
${CMD_PREFIX} ostree --repo=repo refs > refs.txt
for v in 26 27 stable; do
assert_file_has_content refs.txt exampleos/x86_64/${v}/server
done
${CMD_PREFIX} ostree --repo=repo refs -A > refs.txt
assert_file_has_content_literal refs.txt 'exampleos/x86_64/stable/server -> exampleos/x86_64/27/server'
${CMD_PREFIX} ostree --repo=repo summary -u
echo "ok ref symlink"