lib: Add diff API
This is a *third* implementation of rpm database diffs in the code, but it is now a public introspectable shared library API. Further commits will change the command line tools to use this, and then after that we'll further deduplicate the `db diff` from this code.
This commit is contained in:
Colin Walters
parent
28ab27caf7
commit
3326e13481
@ -140,3 +140,136 @@ rpm_ostree_db_query (OstreeRepo *repo,
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return query_all_packages_in_sack (rsack);
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}
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/**
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* rpm_ostree_db_diff:
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* @repo: An OSTree repository
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* @orig_ref: Original ref (branch or commit)
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* @new_ref: New ref (branch or commit)
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* @query: (allow-none): A query, currently must be %NULL
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* @out_removed: (out) (transfer container) (element-type RpmOstreePackage): Return location for removed packages
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* @out_added: (out) (transfer container) (element-type RpmOstreePackage): Return location for added packages
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* @out_modified_old: (out) (transfer container) (element-type RpmOstreePackage): Return location for modified old packages
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* @out_modified_new: (out) (transfer container) (element-type RpmOstreePackage): Return location for modified new packages
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*
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* Compute the RPM package delta between two commits. Currently you
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* must use %NULL for the @query parameter; in a future version this
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* function may allow looking at a subset of the packages.
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*
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* The @out_modified_old and @out_modified_new arrays will always be
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* the same length, and indicies will refer to the same base package
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* name. It is possible in RPM databases to have multiple packages
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* installed with the same name; in this case, the behavior will
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* depend on whether the package set is transitioning from 1 -> N or N
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* -> 1. In the former case, an arbitrary single instance of one of
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* the new packages will be in @out_modified_new. If the latter, then
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* multiple entries with the same name will be returned in
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* the array @out_modified_old, with each having a reference to the
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* single corresponding new package.
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*/
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gboolean
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rpm_ostree_db_diff (OstreeRepo *repo,
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const char *orig_ref,
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const char *new_ref,
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GVariant *query,
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GPtrArray **out_removed,
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GPtrArray **out_added,
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GPtrArray **out_modified_old,
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GPtrArray **out_modified_new,
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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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g_autoptr(RpmOstreeRefSack) orig_sack = NULL;
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g_autoptr(RpmOstreeRefSack) new_sack = NULL;
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_cleanup_hypackagelist_ HyPackageList orig_pkglist = NULL;
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_cleanup_hypackagelist_ HyPackageList new_pkglist = NULL;
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g_autoptr(GPtrArray) ret_removed = g_ptr_array_new_with_free_func (g_object_unref);
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g_autoptr(GPtrArray) ret_added = g_ptr_array_new_with_free_func (g_object_unref);
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g_autoptr(GPtrArray) ret_modified_old = g_ptr_array_new_with_free_func (g_object_unref);
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g_autoptr(GPtrArray) ret_modified_new = g_ptr_array_new_with_free_func (g_object_unref);
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guint i;
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HyPackage pkg;
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g_return_val_if_fail (query == NULL, FALSE);
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g_return_val_if_fail (out_removed != NULL && out_added != NULL &&
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out_modified_old != NULL && out_modified_new != NULL, FALSE);
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orig_sack = get_refsack_for_commit (repo, orig_ref, cancellable, error);
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if (!orig_sack)
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goto out;
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{ _cleanup_hyquery_ HyQuery query = hy_query_create (orig_sack->sack);
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hy_query_filter (query, HY_PKG_REPONAME, HY_EQ, HY_SYSTEM_REPO_NAME);
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orig_pkglist = hy_query_run (query);
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}
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new_sack = get_refsack_for_commit (repo, new_ref, cancellable, error);
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if (!new_sack)
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goto out;
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{ _cleanup_hyquery_ HyQuery query = hy_query_create (new_sack->sack);
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hy_query_filter (query, HY_PKG_REPONAME, HY_EQ, HY_SYSTEM_REPO_NAME);
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new_pkglist = hy_query_run (query);
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}
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FOR_PACKAGELIST(pkg, new_pkglist, i)
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{
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_cleanup_hyquery_ HyQuery query = NULL;
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_cleanup_hypackagelist_ HyPackageList pkglist = NULL;
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guint count;
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HyPackage oldpkg;
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query = hy_query_create (orig_sack->sack);
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hy_query_filter (query, HY_PKG_NAME, HY_EQ, hy_package_get_name (pkg));
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hy_query_filter (query, HY_PKG_EVR, HY_NEQ, hy_package_get_evr (pkg));
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hy_query_filter (query, HY_PKG_REPONAME, HY_EQ, HY_SYSTEM_REPO_NAME);
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pkglist = hy_query_run (query);
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count = hy_packagelist_count (pkglist);
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if (count > 0)
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{
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/* See comment above about transitions from N -> 1 */
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oldpkg = hy_packagelist_get (pkglist, 0);
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g_ptr_array_add (ret_modified_old, _rpm_ostree_package_new (orig_sack, oldpkg));
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g_ptr_array_add (ret_modified_new, _rpm_ostree_package_new (new_sack, pkg));
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}
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}
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FOR_PACKAGELIST(pkg, orig_pkglist, i)
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{
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_cleanup_hyquery_ HyQuery query = NULL;
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_cleanup_hypackagelist_ HyPackageList pkglist = NULL;
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query = hy_query_create (new_sack->sack);
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hy_query_filter (query, HY_PKG_NAME, HY_EQ, hy_package_get_name (pkg));
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hy_query_filter (query, HY_PKG_REPONAME, HY_EQ, HY_SYSTEM_REPO_NAME);
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pkglist = hy_query_run (query);
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if (hy_packagelist_count (pkglist) == 0)
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g_ptr_array_add (ret_removed, _rpm_ostree_package_new (orig_sack, pkg));
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}
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FOR_PACKAGELIST(pkg, new_pkglist, i)
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{
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_cleanup_hyquery_ HyQuery query = NULL;
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_cleanup_hypackagelist_ HyPackageList pkglist = NULL;
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query = hy_query_create (orig_sack->sack);
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hy_query_filter (query, HY_PKG_NAME, HY_EQ, hy_package_get_name (pkg));
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hy_query_filter (query, HY_PKG_REPONAME, HY_EQ, HY_SYSTEM_REPO_NAME);
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pkglist = hy_query_run (query);
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if (hy_packagelist_count (pkglist) == 0)
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g_ptr_array_add (ret_added, _rpm_ostree_package_new (new_sack, pkg));
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}
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ret = TRUE;
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*out_removed = g_steal_pointer (&ret_removed);
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*out_added = g_steal_pointer (&ret_added);
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*out_modified_old = g_steal_pointer (&ret_modified_old);
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*out_modified_new = g_steal_pointer (&ret_modified_new);
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out:
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return ret;
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}
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@ -31,4 +31,15 @@ _RPMOSTREE_EXTERN GPtrArray *rpm_ostree_db_query (OstreeRepo *repo
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GCancellable *cancellable,
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GError **error);
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_RPMOSTREE_EXTERN gboolean rpm_ostree_db_diff (OstreeRepo *repo,
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const char *orig_ref,
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const char *new_ref,
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GVariant *query,
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GPtrArray **out_removed,
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GPtrArray **out_added,
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GPtrArray **out_modified_old,
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GPtrArray **out_modified_new,
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GCancellable *cancellable,
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GError **error);
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G_END_DECLS
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@ -12,3 +12,11 @@ print "Package list: "
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for p in qr:
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print p.get_nevra()
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_,removed,added,modold,modnew = RpmOstree.db_diff(r, ref + '^', ref, None, None)
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for p in removed:
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print "D " + p.get_nevra()
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for p in added:
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print "A " + p.get_nevra()
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for o,n in zip(modold, modnew):
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print "M {0} {1} -> {2}".format(o.get_name(), o.get_evr(), n.get_evr())
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