JSON internal API, IEEE754 base64/hex streaming, weights endpoint optimization (#14493)

* first work on standardizing json formatting

* renamed old grouping to time_grouping and added group_by

* add dummy functions to enable compilation

* buffer json api work

* jsonwrap opening with buffer_json_X() functions

* cleanup

* storage for quotes

* optimize buffer printing for both numbers and strings

* removed ; from define

* contexts json generation using the new json functions

* fix buffer overflow at unit test

* weights endpoint using new json api

* fixes to weights endpoint

* check buffer overflow on all buffer functions

* do synchronous queries for weights

* buffer_flush() now resets json state too

* content type typedef

* print double values that are above the max 64-bit value

* str2ndd() can now parse values above UINT64_MAX

* faster number parsing by avoiding double calculations as much as possible

* faster number parsing

* faster hex parsing

* accurate printing and parsing of double values, even for very large numbers that cannot fit in 64bit integers

* full printing and parsing without using library functions - and related unit tests

* added IEEE754 streaming capability to enable streaming of double values in hex

* streaming and replication to transfer all values in hex

* use our own str2ndd for set2

* remove subnormal check from ieee

* base64 encoding for numbers, instead of hex

* when increasing double precision, also make sure the fractional number printed is aligned to the wanted precision

* str2ndd_encoded() parses all encoding formats, including integers

* prevent uninitialized use

* /api/v1/info using the new json API

* Fix error when compiling with --disable-ml

* Remove redundant 'buffer_unittest' declaration

* Fix formatting

* Fix formatting

* Fix formatting

* fix buffer unit test

* apps.plugin using the new JSON API

* make sure the metrics registry does not accept negative timestamps

* do not allow pages with negative timestamps to be loaded from db files; do not accept pages with negative timestamps in the cache

* Fix more formatting

---------

Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>

1 files changed, 13 insertions, 13 deletions

diff --git a/collectors/slabinfo.plugin/slabinfo.c b/collectors/slabinfo.plugin/slabinfo.c
index 52b53cd20d..25b96e386e 100644
--- a/collectors/slabinfo.plugin/slabinfo.c
+++ b/collectors/slabinfo.plugin/slabinfo.c
@@ -171,19 +171,19 @@ struct slabinfo *read_file_slabinfo() {
         char *name = procfile_lineword(ff, l, 0);
         struct slabinfo *s = get_slabstruct(name);
 
-        s->active_objs    = str2uint64_t(procfile_lineword(ff, l, 1));
-        s->num_objs       = str2uint64_t(procfile_lineword(ff, l, 2));
-        s->obj_size       = str2uint64_t(procfile_lineword(ff, l, 3));
-        s->obj_per_slab   = str2uint64_t(procfile_lineword(ff, l, 4));
-        s->pages_per_slab = str2uint64_t(procfile_lineword(ff, l, 5));
-
-        s->tune_limit     = str2uint64_t(procfile_lineword(ff, l, 7));
-        s->tune_batchcnt  = str2uint64_t(procfile_lineword(ff, l, 8));
-        s->tune_shared_factor = str2uint64_t(procfile_lineword(ff, l, 9));
-
-        s->data_active_slabs = str2uint64_t(procfile_lineword(ff, l, 11));
-        s->data_num_slabs    = str2uint64_t(procfile_lineword(ff, l, 12));
-        s->data_shared_avail = str2uint64_t(procfile_lineword(ff, l, 13));
+        s->active_objs    = str2uint64_t(procfile_lineword(ff, l, 1), NULL);
+        s->num_objs       = str2uint64_t(procfile_lineword(ff, l, 2), NULL);
+        s->obj_size       = str2uint64_t(procfile_lineword(ff, l, 3), NULL);
+        s->obj_per_slab   = str2uint64_t(procfile_lineword(ff, l, 4), NULL);
+        s->pages_per_slab = str2uint64_t(procfile_lineword(ff, l, 5), NULL);
+
+        s->tune_limit     = str2uint64_t(procfile_lineword(ff, l, 7), NULL);
+        s->tune_batchcnt  = str2uint64_t(procfile_lineword(ff, l, 8), NULL);
+        s->tune_shared_factor = str2uint64_t(procfile_lineword(ff, l, 9), NULL);
+
+        s->data_active_slabs = str2uint64_t(procfile_lineword(ff, l, 11), NULL);
+        s->data_num_slabs    = str2uint64_t(procfile_lineword(ff, l, 12), NULL);
+        s->data_shared_avail = str2uint64_t(procfile_lineword(ff, l, 13), NULL);
 
         uint32_t memperslab = s->pages_per_slab * slab_pagesize;
         // Internal fragmentation: loss per slab, due to objects not being a multiple of pagesize