Add max string value lenght parameter for attributes/timeseries.

transport/coap/src/main/resources/tb-coap-transport.yml

@@ -38,6 +38,8 @@ transport:
   json:
     # Cast String data types to Numeric if possible when processing Telemetry/Attributes JSON
     type_cast_enabled: "${JSON_TYPE_CAST_ENABLED:true}"
+    # Maximum allowed string value length when processing Telemetry/Attributes JSON (0 value disables string value length check)
+    max_string_value_length: "${JSON_MAX_STRING_VALUE_LENGTH:0}"
 
 kafka:
   enabled: true

transport/http/src/main/resources/tb-http-transport.yml

@@ -39,6 +39,8 @@ transport:
   json:
     # Cast String data types to Numeric if possible when processing Telemetry/Attributes JSON
     type_cast_enabled: "${JSON_TYPE_CAST_ENABLED:true}"
+    # Maximum allowed string value length when processing Telemetry/Attributes JSON (0 value disables string value length check)
+    max_string_value_length: "${JSON_MAX_STRING_VALUE_LENGTH:0}"
 
 kafka:
   enabled: true

transport/mqtt/src/main/resources/tb-mqtt-transport.yml

@@ -58,6 +58,8 @@ transport:
   json:
     # Cast String data types to Numeric if possible when processing Telemetry/Attributes JSON
     type_cast_enabled: "${JSON_TYPE_CAST_ENABLED:true}"
+    # Maximum allowed string value length when processing Telemetry/Attributes JSON (0 value disables string value length check)
+    max_string_value_length: "${JSON_MAX_STRING_VALUE_LENGTH:0}"
 
 kafka:
   enabled: true