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http-walker: use object_id instead of bare hash

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We long ago switched most code to using object_id structs instead of
bare "unsigned char *" hashes. This gives us more type safety from the
compiler, and generally makes it easier to understand what we expect in
each parameter.

But the dumb-http code has lagged behind. And indeed, the whole "walker"
subsystem interface has the same problem, though http-walker is the only
user left.

So let's update the walker interface to pass object_id structs (which we
already have anyway at all call sites!), and likewise use those within
the http-walker methods that it calls.

This cleans up the dumb-http code a bit, but will also let us fix a few
more commonly used helper functions.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
This commit is contained in:
Jeff King 2024-10-25 03:03:42 -04:00 committed by Taylor Blau
parent 6b2fc22050
commit 0af861e0c8
3 changed files with 17 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
http-walker.c
View File

@ -147,14 +147,14 @@ static int fill_active_slot(void *data UNUSED)
return 0;
}
static void prefetch(struct walker *walker, unsigned char *sha1)
static void prefetch(struct walker *walker, const struct object_id *oid)
{
struct object_request *newreq;
struct walker_data *data = walker->data;
newreq = xmalloc(sizeof(*newreq));
newreq->walker = walker;
oidread(&newreq->oid, sha1, the_repository->hash_algo);
oidcpy(&newreq->oid, oid);
newreq->repo = data->alt;
newreq->state = WAITING;
newreq->req = NULL;
@ -422,7 +422,8 @@ static int fetch_indices(struct walker *walker, struct alt_base *repo)
return ret;
}
static int http_fetch_pack(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
static int http_fetch_pack(struct walker *walker, struct alt_base *repo,
const struct object_id *oid)
{
struct packed_git *target;
int ret;
@ -431,7 +432,7 @@ static int http_fetch_pack(struct walker *walker, struct alt_base *repo, unsigne
if (fetch_indices(walker, repo))
return -1;
target = find_sha1_pack(sha1, repo->packs);
target = find_sha1_pack(oid->hash, repo->packs);
if (!target)
return -1;
close_pack_index(target);
@ -440,7 +441,7 @@ static int http_fetch_pack(struct walker *walker, struct alt_base *repo, unsigne
fprintf(stderr, "Getting pack %s\n",
hash_to_hex(target->hash));
fprintf(stderr, " which contains %s\n",
hash_to_hex(sha1));
oid_to_hex(oid));
}
preq = new_http_pack_request(target->hash, repo->base);
@ -477,9 +478,9 @@ static void abort_object_request(struct object_request *obj_req)
release_object_request(obj_req);
}
static int fetch_object(struct walker *walker, unsigned char *hash)
static int fetch_object(struct walker *walker, const struct object_id *oid)
{
char *hex = hash_to_hex(hash);
char *hex = oid_to_hex(oid);
int ret = 0;
struct object_request *obj_req = NULL;
struct http_object_request *req;
@ -487,7 +488,7 @@ static int fetch_object(struct walker *walker, unsigned char *hash)
list_for_each(pos, head) {
obj_req = list_entry(pos, struct object_request, node);
if (hasheq(obj_req->oid.hash, hash, the_repository->hash_algo))
if (oideq(&obj_req->oid, oid))
break;
}
if (!obj_req)
@ -548,20 +549,20 @@ static int fetch_object(struct walker *walker, unsigned char *hash)
return ret;
}
static int fetch(struct walker *walker, unsigned char *hash)
static int fetch(struct walker *walker, const struct object_id *oid)
{
struct walker_data *data = walker->data;
struct alt_base *altbase = data->alt;
if (!fetch_object(walker, hash))
if (!fetch_object(walker, oid))
return 0;
while (altbase) {
if (!http_fetch_pack(walker, altbase, hash))
if (!http_fetch_pack(walker, altbase, oid))
return 0;
fetch_alternates(walker, data->alt->base);
altbase = altbase->next;
}
return error("Unable to find %s under %s", hash_to_hex(hash),
return error("Unable to find %s under %s", oid_to_hex(oid),
data->alt->base);
}

4
walker.c
View File

@ -157,7 +157,7 @@ static int process(struct walker *walker, struct object *obj)
else {
if (obj->flags & COMPLETE)
return 0;
walker->prefetch(walker, obj->oid.hash);
walker->prefetch(walker, &obj->oid);
}
object_list_insert(obj, process_queue_end);
@ -186,7 +186,7 @@ static int loop(struct walker *walker)
* the queue because we needed to fetch it first.
*/
if (! (obj->flags & TO_SCAN)) {
if (walker->fetch(walker, obj->oid.hash)) {
if (walker->fetch(walker, &obj->oid)) {
stop_progress(&progress);
report_missing(obj);
return -1;

4
walker.h
View File

@ -6,8 +6,8 @@
struct walker {
void *data;
int (*fetch_ref)(struct walker *, struct ref *ref);
void (*prefetch)(struct walker *, unsigned char *sha1);
int (*fetch)(struct walker *, unsigned char *sha1);
void (*prefetch)(struct walker *, const struct object_id *oid);
int (*fetch)(struct walker *, const struct object_id *oid);
void (*cleanup)(struct walker *);
int get_verbosely;
int get_progress;