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Save device introspection in kv_store #946

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Save device introspection in kv_store #946

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48 changes: 48 additions & 0 deletions apps/astarte_pairing/lib/astarte_pairing/queries.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ defmodule Astarte.Pairing.Queries do

alias CQEx.Query
alias CQEx.Result
alias Astarte.Core.Device
alias Astarte.Core.CQLUtils
alias Astarte.Pairing.Config
require Logger
Expand Down Expand Up @@ -301,6 +302,10 @@ defmodule Astarte.Pairing.Queries do

case Query.call(client, query) do
{:ok, _res} ->
Enum.each(introspection, fn {interface, major} ->
register_device_with_interface(client, device_id, interface, major)
end)

:ok

error ->
Expand Down Expand Up @@ -348,6 +353,10 @@ defmodule Astarte.Pairing.Queries do

case Query.call(client, query) do
{:ok, _res} ->
Enum.each(introspection, fn {interface, major} ->
register_device_with_interface(client, device_id, interface, major)
end)

:ok

error ->
Expand Down Expand Up @@ -480,4 +489,43 @@ defmodule Astarte.Pairing.Queries do
{:error, :database_error}
end
end

defp register_device_with_interface(db_client, device_id, interface_name, interface_major) do
key_insert_statement = """
INSERT INTO kv_store (group, key)
VALUES (:group, :key)
"""

major_str = "v#{Integer.to_string(interface_major)}"
encoded_device_id = Device.encode_device_id(device_id)

insert_device_by_interface_query =
Query.new()
|> Query.statement(key_insert_statement)
|> Query.put(:group, "devices-by-interface-#{interface_name}-#{major_str}")
|> Query.put(:key, encoded_device_id)
|> Query.consistency(:each_quorum)

insert_to_with_data_on_interface =
Query.new()
|> Query.statement(key_insert_statement)
|> Query.put(
:group,
"devices-with-data-on-interface-#{interface_name}-#{major_str}"
)
|> Query.put(:key, encoded_device_id)
|> Query.consistency(:each_quorum)

with {:ok, _result} <- Query.call(db_client, insert_device_by_interface_query),
{:ok, _result} <- Query.call(db_client, insert_to_with_data_on_interface) do
:ok
else
{:error, reason} ->
Logger.warning(
"Database error: cannot register device-interface pair, reason: #{inspect(reason)}."
)

{:error, reason}
end
end
end
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