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Add a new API: /api/enrich Enrich Event
Signed-off-by: Roumen Roupski <[email protected]>
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# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
defmodule Schema.Helper do | ||
@moduledoc """ | ||
Provides helper functions to enrich the event data. | ||
""" | ||
require Logger | ||
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def enrich(data, enum_text, observables) when is_map(data) do | ||
Logger.debug(fn -> | ||
"enrich event: #{inspect(data)}, enum_text: #{enum_text}, observables: #{observables}" | ||
end) | ||
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enrich_class(data["class_uid"], data, enum_text, observables) | ||
end | ||
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# this is not an event | ||
def enrich(data, _enum_text, _observables), do: %{:error => "Not a JSON object", :data => data} | ||
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# missing class_uid | ||
defp enrich_class(nil, data, _enum_text, _observables), | ||
do: %{:error => "Missing class_uid", :data => data} | ||
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defp enrich_class(class_uid, data, enum_text, _observables) do | ||
Logger.debug("enrich class: #{class_uid}") | ||
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# if observables == "true", do: | ||
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case Schema.find_class(class_uid) do | ||
# invalid event class ID | ||
nil -> | ||
%{:error => "Invalid class_uid: #{class_uid}", :data => data} | ||
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class -> | ||
data = type_uid(class_uid, data) | ||
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if enum_text == "true" do | ||
enrich_type(class, data) | ||
else | ||
data | ||
end | ||
end | ||
end | ||
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defp enrich_type(type, data) do | ||
attributes = type[:attributes] | ||
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Enum.reduce(data, %{}, fn {name, value}, acc -> | ||
key = to_atom(name) | ||
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case attributes[key] do | ||
# Attribute name is not defined in the schema | ||
nil -> | ||
Map.put(acc, name, value) | ||
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attribute -> | ||
{name, text} = enrich_attribute(attribute[:type], name, attribute, value) | ||
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if Map.has_key?(attribute, :enum) do | ||
Logger.debug("enrich enum: #{name} = #{text}") | ||
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case attribute[:sibling] do | ||
nil -> | ||
Map.put_new(acc, name, value) | ||
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sibling -> | ||
Map.put_new(acc, name, value) |> Map.put_new(sibling, text) | ||
end | ||
else | ||
Map.put(acc, name, text) | ||
end | ||
end | ||
end) | ||
end | ||
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defp type_uid(class_uid, data) do | ||
case data["activity_id"] do | ||
nil -> | ||
data | ||
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activity_id -> | ||
uid = | ||
if activity_id >= 0 do | ||
Schema.Types.type_uid(class_uid, activity_id) | ||
else | ||
0 | ||
end | ||
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Map.put(data, "type_uid", uid) | ||
end | ||
end | ||
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defp to_atom(key) when is_atom(key), do: key | ||
defp to_atom(key), do: String.to_atom(key) | ||
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defp enrich_attribute("integer_t", name, attribute, value) do | ||
enrich_integer(attribute[:enum], name, value) | ||
end | ||
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defp enrich_attribute("object_t", name, attribute, value) when is_map(value) do | ||
{name, enrich_type(Schema.object(attribute[:object_type]), value)} | ||
end | ||
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defp enrich_attribute("object_t", name, attribute, value) when is_list(value) do | ||
data = | ||
if attribute[:is_array] and is_map(List.first(value)) do | ||
obj_type = Schema.object(attribute[:object_type]) | ||
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Enum.map(value, fn data -> | ||
enrich_type(obj_type, data) | ||
end) | ||
else | ||
value | ||
end | ||
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{name, data} | ||
end | ||
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defp enrich_attribute(_, name, _attribute, value) do | ||
{name, value} | ||
end | ||
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# Integer value | ||
defp enrich_integer(nil, name, value) do | ||
{name, value} | ||
end | ||
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# Single enum value | ||
defp enrich_integer(enum, name, value) when is_integer(value) do | ||
key = Integer.to_string(value) |> String.to_atom() | ||
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{name, caption(enum[key], value)} | ||
end | ||
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# Array of enum values | ||
defp enrich_integer(enum, name, values) when is_list(values) do | ||
list = | ||
Enum.map(values, fn n -> | ||
key = Integer.to_string(n) |> String.to_atom() | ||
caption(enum[key], key) | ||
end) | ||
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{name, list} | ||
end | ||
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# Non-integer value | ||
defp enrich_integer(_, name, value), | ||
do: {name, value} | ||
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defp caption(nil, value), do: value | ||
defp caption(map, _value), do: map[:caption] | ||
end |
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