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MEDIUM: stats: implement a typed output format for stats

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The output for each field is :
  field:<origin><nature><scope>:type:value

where field reminds the type of the object being dumped as well as its
position (pid, iid, sid), field number and field name. This way a
monitoring utility may very well report all available information without
knowing new fields in advance.

This format is also supported in the HTTP version of the stats by adding
";typed" after the URI, instead of ";csv" for the CSV format.

The doc was not updated yet.
This commit is contained in:
Willy Tarreau 2016-01-11 18:57:53 +01:00
parent cb80912001
commit 1e62df92e3
2 changed files with 43 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/dumpstats.c
View File

@ -1517,7 +1517,11 @@ static int stats_sock_parse_request(struct stream_interface *si, char *line)
appctx->ctx.stats.iid = atoi(args[2]);
appctx->ctx.stats.type = atoi(args[3]);
appctx->ctx.stats.sid = atoi(args[4]);
if (strcmp(args[5], "typed") == 0)
appctx->ctx.stats.flags |= STAT_FMT_TYPED;
}
else if (strcmp(args[2], "typed") == 0)
appctx->ctx.stats.flags |= STAT_FMT_TYPED;
appctx->st2 = STAT_ST_INIT;
appctx->st0 = STAT_CLI_O_STAT; // stats_dump_stat_to_buffer
@ -3348,6 +3352,34 @@ static int stats_dump_fields_csv(struct chunk *out, const struct field *stats)
return 1;
}
/* Dump all fields from <stats> into <out> using a typed "field:desc:type:value" format */
static int stats_dump_fields_typed(struct chunk *out, const struct field *stats)
{
int field;
for (field = 0; field < ST_F_TOTAL_FIELDS; field++) {
if (!stats[field].type)
continue;
chunk_appendf(out, "%c.%u.%u.%d.%s.%u:",
stats[ST_F_TYPE].u.u32 == STATS_TYPE_FE ? 'F' :
stats[ST_F_TYPE].u.u32 == STATS_TYPE_BE ? 'B' :
stats[ST_F_TYPE].u.u32 == STATS_TYPE_SO ? 'L' :
stats[ST_F_TYPE].u.u32 == STATS_TYPE_SV ? 'S' :
'?',
stats[ST_F_IID].u.u32, stats[ST_F_SID].u.u32,
field, stat_field_names[field], stats[ST_F_PID].u.u32);
if (!stats_emit_field_tags(out, &stats[field], ':'))
return 0;
if (!stats_emit_typed_data_field(out, &stats[field]))
return 0;
if (!chunk_strcat(out, "\n"))
return 0;
}
return 1;
}
/* Dump all fields from <stats> into <out> using the HTML format. A column is
* reserved for the checkbox is ST_SHOWADMIN is set in <flags>. Some extra info
* are provided if ST_SHLGNDS is present in <flags>.
@ -3992,6 +4024,8 @@ static int stats_dump_one_line(const struct field *stats, unsigned int flags, st
if (appctx->ctx.stats.flags & STAT_FMT_HTML)
return stats_dump_fields_html(&trash, stats, flags);
else if (appctx->ctx.stats.flags & STAT_FMT_TYPED)
return stats_dump_fields_typed(&trash, stats);
else
return stats_dump_fields_csv(&trash, stats);
}
@ -5158,7 +5192,7 @@ static int stats_dump_stat_to_buffer(struct stream_interface *si, struct uri_aut
case STAT_ST_HEAD:
if (appctx->ctx.stats.flags & STAT_FMT_HTML)
stats_dump_html_head(uri);
else
else if (!(appctx->ctx.stats.flags & STAT_FMT_TYPED))
stats_dump_csv_header();
if (bi_putchk(rep, &trash) == -1) {

8
src/proto_http.c
View File

@ -3086,6 +3086,14 @@ int http_handle_stats(struct stream *s, struct channel *req)
}
}
for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
if (memcmp(h, ";typed", 6) == 0) {
appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
appctx->ctx.stats.flags |= STAT_FMT_TYPED;
break;
}
}
for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
if (memcmp(h, ";st=", 4) == 0) {
int i;