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feat(stats): receiver-observed created/literal counters (protocol 2.28.0)

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- PROTOCOL_VERSION 2.27.0 -> 2.28.0; STATUS_STATS gains literal_bytes and
  the created reg/dir/link/special counters (golden wire updated)
- receiver reports which destination entries it newly created, including
  implicitly-created parent directories below the logical transfer root, so
  Number of created files carries rsync's per-type breakdown
- Literal data is now exact for a delta transfer (receiver counts the literal
  fragments it stored)
- differential-tested vs rsync 3.4.1 for fresh-create, update and delta
This commit is contained in:
TapTap
2026-09-19 10:45:23 +02:00
parent 25062352f6
commit 6119e1e75c
21 changed files with 646 additions and 95 deletions
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src/shared/format.h
+16 -4
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@@ -57,14 +57,26 @@ bool format_dest_state_send(int fd, const OutputDestState* state);
bool format_dest_state_receive(int fd, OutputDestState* state);
/* End-of-transfer receiver counters reported through STATUS_STATS (protocol
* 2.25.0) when the wire config carries report_stats. `would_delete_count` is
* the number of destination-relative paths the receiver would have deleted in a
* -n/--dry-run --delete run; that many wire strings immediately follow the
* fixed record (sent/read by the caller). */
* 2.25.0, extended in 2.28.0) when the wire config carries report_stats.
* `would_delete_count` is the number of destination-relative paths the receiver
* would have deleted in a -n/--dry-run --delete run; that many wire strings
* immediately follow the fixed record (sent/read by the caller).
*
* Protocol 2.28.0 adds the receiver-observed counters the sender cannot see:
* `literal_bytes` is the file data the receiver actually stored literally
* (whole files plus the literal fragments of a delta) and the four `created_*`
* counters split the destination entries the receiver newly created by type,
* reproducing rsync's `Number of created files` breakdown and an exact
* `Literal data` for a delta run. */
typedef struct {
unsigned long long matched_data;
unsigned long long deleted_files;
unsigned long long would_delete_count;
unsigned long long literal_bytes;
unsigned long long created_reg;
unsigned long long created_dir;
unsigned long long created_link;
unsigned long long created_special;
} ReceiverStats;
/* Fixed-width STATUS_STATS counter record. The status frame and the optional