[dpdk-dev] [PATCH] telemetry: add support for dicts of dicts

[Power, Ciara]

Hi Radu, 


>-----Original Message-----
>From: Nicolau, Radu <radu.nicolau at intel.com>
>Sent: Friday 3 September 2021 11:57
>To: Power, Ciara <ciara.power at intel.com>
>Cc: dev at dpdk.org; Nicolau, Radu <radu.nicolau at intel.com>; Doherty, Declan
><declan.doherty at intel.com>
>Subject: [PATCH] telemetry: add support for dicts of dicts
>
>Add support for dicts of dicts to telemetry library.
>
>Signed-off-by: Declan Doherty <declan.doherty at intel.com>
>Signed-off-by: Radu Nicolau <radu.nicolau at intel.com>
>---
> lib/telemetry/telemetry.c      | 43 +++++++++++++++++++++++++++++++---
> lib/telemetry/telemetry_data.c |  2 +-
> 2 files changed, 41 insertions(+), 4 deletions(-)
>
>diff --git a/lib/telemetry/telemetry.c b/lib/telemetry/telemetry.c index
>8665db8d03..3f83476112 100644
>--- a/lib/telemetry/telemetry.c
>+++ b/lib/telemetry/telemetry.c
>@@ -24,7 +24,7 @@
> #include "telemetry_internal.h"
>
> #define MAX_CMD_LEN 56
>-#define MAX_HELP_LEN 64
>+#define MAX_HELP_LEN 128
> #define MAX_OUTPUT_LEN (1024 * 16)
> #define MAX_CONNECTIONS 10
>
>@@ -157,8 +157,8 @@ container_to_json(const struct rte_tel_data *d, char
>*out_buf, size_t buf_len)
> 	size_t used = 0;
> 	unsigned int i;
>
>-	if (d->type != RTE_TEL_ARRAY_U64 && d->type != RTE_TEL_ARRAY_INT
>-			&& d->type != RTE_TEL_ARRAY_STRING)
>+	if (d->type != RTE_TEL_DICT && d->type != RTE_TEL_ARRAY_U64 &&
>+		d->type != RTE_TEL_ARRAY_INT && d->type !=
>RTE_TEL_ARRAY_STRING)
> 		return snprintf(out_buf, buf_len, "null");
>
> 	used = rte_tel_json_empty_array(out_buf, buf_len, 0); @@ -177,6
>+177,43 @@ container_to_json(const struct rte_tel_data *d, char *out_buf,
>size_t buf_len)
> 			used = rte_tel_json_add_array_string(out_buf,
> 				buf_len, used,
> 				d->data.array[i].sval);
>+	if (d->type == RTE_TEL_DICT)
>+		for (i = 0; i < d->data_len; i++) {
>+			const struct tel_dict_entry *v = &d->data.dict[i];
>+			switch (v->type) {
>+			case RTE_TEL_STRING_VAL:
>+				used = rte_tel_json_add_obj_str(out_buf,
>+						buf_len, used,
>+						v->name, v->value.sval);
>+				break;
>+			case RTE_TEL_INT_VAL:
>+				used = rte_tel_json_add_obj_int(out_buf,
>+						buf_len, used,
>+						v->name, v->value.ival);
>+				break;
>+			case RTE_TEL_U64_VAL:
>+				used = rte_tel_json_add_obj_u64(out_buf,
>+						buf_len, used,
>+						v->name, v->value.u64val);
>+				break;
>+			case RTE_TEL_CONTAINER:
>+			{
>+				char temp[buf_len];
>+				const struct container *cont =
>+						&v->value.container;
>+				if (container_to_json(cont->data,
>+						temp, buf_len) != 0)
>+					used = rte_tel_json_add_obj_json(
>+							out_buf,
>+							buf_len, used,
>+							v->name, temp);
>+				if (!cont->keep)
>+					rte_tel_data_free(cont->data);
>+				break;
>+			}
>+			}
>+		}
>+
> 	return used;
> }
>
>diff --git a/lib/telemetry/telemetry_data.c b/lib/telemetry/telemetry_data.c
>index 77b0fe09a5..54a7c79fff 100644
>--- a/lib/telemetry/telemetry_data.c
>+++ b/lib/telemetry/telemetry_data.c
>@@ -153,7 +153,7 @@ rte_tel_data_add_dict_container(struct rte_tel_data *d,
>const char *name,  {
> 	struct tel_dict_entry *e = &d->data.dict[d->data_len];
>
>-	if (d->type != RTE_TEL_DICT || (val->type != RTE_TEL_ARRAY_U64
>+	if ((d->type != RTE_TEL_DICT && val->type != RTE_TEL_ARRAY_U64
> 			&& val->type != RTE_TEL_ARRAY_INT
> 			&& val->type != RTE_TEL_ARRAY_STRING))
> 		return -EINVAL;
>--
>2.25.1


Thanks for this, it will be a good addition to Telemetry.

I think tests should be added with this feature.
Different combinations of data are tested in the test_telemetry_data.c file, tests for these nested dicts would be valuable there.

Thanks,
Ciara