Add comments and re-ident code

Change-Id: Ibb4636bd968d6e4fd564ab40d5cf59e5a6ec6210
Signed-off-by: Sebastien Douheret <sebastien.douheret@iot.bzh>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/plugins/influxdb.c b/src/plugins/influxdb.c
index b8f85d2..f2f8fe1 100644
--- a/src/plugins/influxdb.c
+++ b/src/plugins/influxdb.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018 "IoT.bzh"
+ * Copyright (C) 2018-2019 "IoT.bzh"
  * Author "Romain Forlot" <romain.forlot@iot.bzh>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -133,18 +133,25 @@ void unpacking_from_api(void* s, json_object* valueJ, const char* key)
     /* Treat the 2 static key that could have been specified */
     if (strcasecmp("name", key) == 0)
         serie->name = json_object_get_string(valueJ);
+
     else if (strcasecmp("timestamp", key) == 0)
         serie->timestamp = (json_object_is_type(valueJ, json_type_int)) ? json_object_get_int64(valueJ) : 0;
+
+    // metadata (AKA tags) are indexed into influxdb
     else if (strcasecmp("metadata", key) == 0)
         wrap_json_object_for_all(valueJ, unpack_metadata, (void*)&serie->serie_columns.tags);
+
+    // value (AKA fields) are NOT indexed into influxdb
     else if (strcasecmp("value", key) == 0 || strcasecmp("values", key) == 0)
         wrap_json_object_for_all(valueJ, unpack_values, (void*)&serie->serie_columns.fields);
+
     /* Treat all key looking for tag and field object. Those ones could be find
        with the last 2 character. '_t' for tag and '_f' that are the keys that
        could be indefinite. Cf influxdb documentation:
        https://docs.influxdata.com/influxdb/v1.5/write_protocols/line_protocol_reference/ */
     else if (strncasecmp(&key[key_length - 2], "_t", 2) == 0)
         add_elt(&serie->serie_columns.tags, key, "", valueJ);
+
     else if (strncasecmp(&key[key_length - 2], "_f", 2) == 0)
         add_elt(&serie->serie_columns.fields, key, "", valueJ);
 }