mirrors/git
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

reftable/dump: support dumping a table's block structure

Browse Source 
We're about to introduce new configs that will allow users to have more
control over how exactly reftables are written. To verify that these
configs are effective we will need to take a peak into the actual blocks
written by the reftable backend.

Introduce a new mode to the dumping logic that prints out the block
structure. This logic can be invoked via `test-tool dump-reftables -b`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2024-05-13 10:18:13 +02:00
committed by Junio C Hamano
parent c22d75b027
commit fcf341890e
4 changed files with 174 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
reftable/reader.c
View File

@ -856,3 +856,66 @@ done:
reftable_reader_free(r);
return err;
}
int reftable_reader_print_blocks(const char *tablename)
{
struct {
const char *name;
int type;
} sections[] = {
{
.name = "ref",
.type = BLOCK_TYPE_REF,
},
{
.name = "obj",
.type = BLOCK_TYPE_OBJ,
},
{
.name = "log",
.type = BLOCK_TYPE_LOG,
},
};
struct reftable_block_source src = { 0 };
struct table_iter ti = TABLE_ITER_INIT;
struct reftable_reader *r = NULL;
size_t i;
int err;
err = reftable_block_source_from_file(&src, tablename);
if (err < 0)
goto done;
err = reftable_new_reader(&r, &src, tablename);
if (err < 0)
goto done;
printf("header:\n");
printf(" block_size: %d\n", r->block_size);
for (i = 0; i < ARRAY_SIZE(sections); i++) {
err = reader_start(r, &ti, sections[i].type, 0);
if (err < 0)
goto done;
if (err > 0)
continue;
printf("%s:\n", sections[i].name);
while (1) {
printf(" - length: %u\n", ti.br.block_len);
printf(" restarts: %u\n", ti.br.restart_count);
err = table_iter_next_block(&ti);
if (err < 0)
goto done;
if (err > 0)
break;
}
}
done:
reftable_reader_free(r);
table_iter_close(&ti);
return err;
}