libostree: Move prune into OstreeRepo namespace
More library work.
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Colin Walters committed
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@@ -0,0 +1,181 @@
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
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*
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* Copyright (C) 2011,2013 Colin Walters <walters@verbum.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Colin Walters <walters@verbum.org>
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*/
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#include "config.h"
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#include "ostree-repo.h"
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typedef struct {
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OstreeRepo *repo;
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GHashTable *reachable;
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guint n_reachable_meta;
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guint n_reachable_content;
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guint n_unreachable_meta;
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guint n_unreachable_content;
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guint64 freed_bytes;
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} OtPruneData;
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static gboolean
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maybe_prune_loose_object (OtPruneData *data,
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OstreeRepoPruneFlags flags,
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const char *checksum,
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OstreeObjectType objtype,
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GCancellable *cancellable,
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GError **error)
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{
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gboolean ret = FALSE;
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gs_unref_variant GVariant *key = NULL;
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gs_unref_object GFile *objf = NULL;
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key = ostree_object_name_serialize (checksum, objtype);
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objf = ostree_repo_get_object_path (data->repo, checksum, objtype);
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if (!g_hash_table_lookup_extended (data->reachable, key, NULL, NULL))
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{
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if (!(flags & OSTREE_REPO_PRUNE_FLAGS_NO_PRUNE))
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{
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gs_unref_object GFileInfo *info = NULL;
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if ((info = g_file_query_info (objf, OSTREE_GIO_FAST_QUERYINFO,
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G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
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cancellable, error)) == NULL)
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goto out;
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if (!gs_file_unlink (objf, cancellable, error))
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goto out;
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data->freed_bytes += g_file_info_get_size (info);
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}
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if (OSTREE_OBJECT_TYPE_IS_META (objtype))
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data->n_unreachable_meta++;
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else
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data->n_unreachable_content++;
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}
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else
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{
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if (OSTREE_OBJECT_TYPE_IS_META (objtype))
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data->n_reachable_meta++;
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else
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data->n_reachable_content++;
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}
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ret = TRUE;
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out:
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return ret;
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}
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gboolean
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ostree_repo_prune (OstreeRepo *repo,
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OstreeRepoPruneFlags flags,
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gint depth,
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gint *out_objects_total,
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gint *out_objects_pruned,
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guint64 *out_pruned_object_size_total,
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GCancellable *cancellable,
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GError **error)
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{
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gboolean ret = FALSE;
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GHashTableIter hash_iter;
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gpointer key, value;
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gs_unref_hashtable GHashTable *objects = NULL;
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gs_unref_hashtable GHashTable *all_refs = NULL;
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gs_free char *formatted_freed_size = NULL;
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OtPruneData data;
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gboolean refs_only = flags & OSTREE_REPO_PRUNE_FLAGS_REFS_ONLY;
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memset (&data, 0, sizeof (data));
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data.repo = repo;
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data.reachable = ostree_repo_traverse_new_reachable ();
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if (refs_only)
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{
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if (!ostree_repo_list_refs (repo, NULL, &all_refs,
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cancellable, error))
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goto out;
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g_hash_table_iter_init (&hash_iter, all_refs);
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while (g_hash_table_iter_next (&hash_iter, &key, &value))
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{
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const char *checksum = value;
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if (!ostree_repo_traverse_commit (repo, checksum, depth, data.reachable,
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cancellable, error))
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goto out;
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}
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}
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if (!ostree_repo_list_objects (repo, OSTREE_REPO_LIST_OBJECTS_ALL, &objects,
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cancellable, error))
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goto out;
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if (!refs_only)
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{
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g_hash_table_iter_init (&hash_iter, objects);
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while (g_hash_table_iter_next (&hash_iter, &key, &value))
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{
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GVariant *serialized_key = key;
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const char *checksum;
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OstreeObjectType objtype;
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ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
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if (objtype != OSTREE_OBJECT_TYPE_COMMIT)
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continue;
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if (!ostree_repo_traverse_commit (repo, checksum, depth, data.reachable,
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cancellable, error))
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goto out;
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}
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}
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g_hash_table_iter_init (&hash_iter, objects);
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while (g_hash_table_iter_next (&hash_iter, &key, &value))
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{
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GVariant *serialized_key = key;
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GVariant *objdata = value;
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const char *checksum;
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OstreeObjectType objtype;
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gboolean is_loose;
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ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
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g_variant_get_child (objdata, 0, "b", &is_loose);
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if (!is_loose)
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continue;
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if (!maybe_prune_loose_object (&data, flags, checksum, objtype,
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cancellable, error))
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goto out;
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}
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ret = TRUE;
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*out_objects_total = (data.n_reachable_meta + data.n_unreachable_meta +
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data.n_reachable_content + data.n_unreachable_content);
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*out_objects_pruned = (data.n_unreachable_meta + data.n_unreachable_content);
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*out_pruned_object_size_total = data.freed_bytes;
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out:
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if (data.reachable)
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g_hash_table_unref (data.reachable);
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return ret;
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}
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@@ -332,6 +332,20 @@ gboolean ostree_repo_traverse_commit (OstreeRepo *repo,
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GCancellable *cancellable,
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GError **error);
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typedef enum {
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OSTREE_REPO_PRUNE_FLAGS_NONE,
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OSTREE_REPO_PRUNE_FLAGS_NO_PRUNE,
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OSTREE_REPO_PRUNE_FLAGS_REFS_ONLY
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} OstreeRepoPruneFlags;
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gboolean ostree_repo_prune (OstreeRepo *repo,
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OstreeRepoPruneFlags flags,
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gint depth,
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gint *out_objects_total,
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gint *out_objects_pruned,
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guint64 *out_pruned_object_size_total,
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GCancellable *cancellable,
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GError **error);
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G_END_DECLS
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