Kong -- How do I write my entity_checks for array #6989 - lua

Question

Summary
I am developing my own rate-limiting plugins based on the official one.
The origin schema looks like:
fields = {
{ config = {
type = "record",
fields = {
{ second = { type = "number", gt = 0 }, },
{ minute = { type = "number", gt = 0 }, },
}
...
},
},
My schema looks like:
{ config = {
type = "record",
fields = {
{ plans = {
type = "array",
elements = {
type = "record",
fields = {
{ second = { type = "number", gt = 0 }, },
{ minute = { type = "number", gt = 0 }, },
}
},
},},
},
custom_validator = validate_periods_order,
},
},
You can see that the first field is called "plans" and it's type is an array which means I will have config.plans[0].second, config.plans[0].second, ... and the original one was config.second
Below is the origin entity_checks function of rate-limiting, I have no idea how to re-write it to match my schema since it changed from simple record type to array type
entity_checks = {
{ at_least_one_of = { "config.second", "config.minute", "config.hour", "config.day", "config.month", "config.year" } },
{ conditional = {
if_field = "config.policy", if_match = { eq = "config.redis" },
then_field = "config.redis_host", then_match = { required = true },
} },
{ conditional = {
if_field = "config.policy", if_match = { eq = "config.redis" },
then_field = "config.redis_port", then_match = { required = true },
} },
{ conditional = {
if_field = "config.policy", if_match = { eq = "config.redis" },
then_field = "config.redis_timeout", then_match = { required = true },
} },
},

Answer 1

Create a local schema for plan
local plan_schema = {
type = "record",
fields = {
{ second = { type = "number", gt = 0 }, },
{ minute = { type = "number", gt = 0 }, },
},
custom_validator = validate_periods_order,
entity_checks = {
{ at_least_one_of = { "second", "minute" } },
}
}
Then on your config set plans as an array of plan
return {
name = plugin_name,
fields = {
{ consumer = typedefs.no_consumer },
{ protocols = typedefs.protocols_http },
{ config = {
type = "record",
fields = {
{ plans = {
type = "array",
elements = plan_schema ,
} },
} },
},
}