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prune: Retain the tip of each ref even with date pruning

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I hit an error with [CAHC](https://wiki.centos.org/SpecialInterestGroup/Atomic/Devel)
where we were doing time-based pruning.  `ostree summary -u` started failing,
and it took me a bit to realize it was because we were pruning
even the tip of old branches, which I was not at all expecting,
and I don't think users will too.

Perhaps in the future we could add some sort of --prune-ref-tips or
something if people wanted it, but I doubt it.

Closes: #445
Approved by: jlebon
This commit is contained in:
Colin Walters 2016-08-08 15:41:09 -04:00 committed by Atomic Bot
parent 056cc0543f
commit fd9536bb19
2 changed files with 31 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/ostree/ot-builtin-prune.c
View File

@ -84,6 +84,8 @@ delete_commit (OstreeRepo *repo, const char *commit_to_delete, GCancellable *can
static gboolean
prune_commits_keep_younger_than_date (OstreeRepo *repo, const char *date, GCancellable *cancellable, GError **error)
{
g_autoptr(GHashTable) refs = NULL;
g_autoptr(GHashTable) ref_heads = g_hash_table_new (g_str_hash, g_str_equal);
g_autoptr(GHashTable) objects = NULL;
GHashTableIter hash_iter;
gpointer key, value;
@ -100,6 +102,21 @@ prune_commits_keep_younger_than_date (OstreeRepo *repo, const char *date, GCance
if (!ot_enable_tombstone_commits (repo, error))
goto out;
if (!ostree_repo_list_refs (repo, NULL, &refs, cancellable, error))
goto out;
/* We used to prune the HEAD of a given ref by default, but that's
* broken for a few reasons. One is that people may use branches as
* tags. Second is that if we do it, we should be deleting the ref
* too, otherwise e.g. `summary -u` breaks trying to load it, etc.
*/
g_hash_table_iter_init (&hash_iter, refs);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
/* Value is lifecycle bound to refs */
g_hash_table_add (ref_heads, (char*)value);
}
if (!ostree_repo_list_objects (repo, OSTREE_REPO_LIST_OBJECTS_ALL, &objects,
cancellable, error))
goto out;
@ -119,6 +136,9 @@ prune_commits_keep_younger_than_date (OstreeRepo *repo, const char *date, GCance
if (objtype != OSTREE_OBJECT_TYPE_COMMIT)
continue;
if (g_hash_table_contains (ref_heads, checksum))
continue;
if (!ostree_repo_load_variant (repo, OSTREE_OBJECT_TYPE_COMMIT, checksum,
&commit, error))
goto out;

16
tests/test-prune.sh
View File

@ -87,25 +87,31 @@ assert_file_has_content tombstonecommitcount "^1$"
${CMD_PREFIX} ostree prune --repo=repo --refs-only --depth=0 -v
find repo/objects -name '*.commit' | wc -l > commitcount
assert_file_has_content commitcount "^1$"
${CMD_PREFIX} ostree --repo=repo commit --branch=test -m test -s test tree --timestamp="2010-10-29 12:43:29 +0000"
${CMD_PREFIX} ostree --repo=repo commit --branch=test -m test -s test tree --timestamp="2005-10-29 12:43:29 +0000"
${CMD_PREFIX} ostree --repo=repo commit --branch=test -m test -s test tree --timestamp="2010-10-29 12:43:29 +0000"
find repo/objects -name '*.commit' | wc -l > commitcount
assert_file_has_content commitcount "^3$"
${CMD_PREFIX} ostree --repo=repo prune --keep-younger-than="2015-10-29 12:43:29 +0000"
find repo/objects -name '*.commit' | wc -l > commitcount
assert_file_has_content commitcount "^1$"
assert_file_has_content commitcount "^2$"
${CMD_PREFIX} ostree prune --repo=repo --refs-only --depth=0 -v
find repo/objects -name '*.commit' | wc -l > commitcount
assert_file_has_content commitcount "^1$"
assert_file_has_content commitcount "^2$"
${CMD_PREFIX} ostree --repo=repo commit --branch=test -m test -s test tree --timestamp="October 25 1985"
${CMD_PREFIX} ostree --repo=repo commit --branch=test -m test -s test tree --timestamp="October 21 2015"
find repo/objects -name '*.commit' | wc -l > commitcount
assert_file_has_content commitcount "^3$"
assert_file_has_content commitcount "^4$"
${CMD_PREFIX} ostree --repo=repo prune --keep-younger-than="1 week ago"
find repo/objects -name '*.commit' | wc -l > commitcount
assert_file_has_content commitcount "^1$"
assert_file_has_content commitcount "^2$"
${CMD_PREFIX} ostree --repo=repo commit --branch=oldcommit tree --timestamp="2005-10-29 12:43:29 +0000"
oldcommit_rev=$($OSTREE --repo=repo rev-parse oldcommit)
$OSTREE ls ${oldcommit_rev}
${CMD_PREFIX} ostree --repo=repo prune --keep-younger-than="1 week ago"
$OSTREE ls ${oldcommit_rev}
${CMD_PREFIX} ostree --repo=repo pull --depth=-1 origin test
${CMD_PREFIX} ostree --repo=repo commit --branch=test -m test -s test tree --timestamp="November 05 1955"