Add checks to allow logging only specific datatypes

Currently, it allows logging of objects and the whitelisting does not
apply to the fields of that object.

This change adds data type checks and allows logging of only specific
types so that data that is not whitelisted does
not go through. This means it will be either masked or removed.

MSG-709, IN-299

lib/lenjador/preprocessors/strategies/mask.rb

@@ -21,8 +21,11 @@ def process(data, pointer = '')
           when Array
             process_array(data, pointer)
 
-          else
+          when String, Numeric, Symbol, Date, Time, TrueClass, FalseClass, NilClass
             data
+
+          else
+            MASKED_VALUE
           end
         end
 

lib/lenjador/preprocessors/strategies/prune.rb

@@ -18,8 +18,11 @@ def process(data, pointer = '')
           when Array
             process_array(data, pointer)
 
-          else
+          when String, Numeric, Symbol, Date, Time, TrueClass, FalseClass, NilClass
             data
+
+          else
+            nil
           end
         end
 

spec/lenjador/preprocessors/whitelist_spec.rb

@@ -147,10 +147,113 @@
     end
 
     context 'when boolean present' do
-      let(:data) { {bool: true} }
+      let(:pointers) { ['/bool'] }
+      let(:data) do
+        {
+          bool: true,
+          bool2: true
+        }
+      end
+
+      it 'masks only if not in whitelist' do
+        expect(processed_data).to eq({
+          bool: true,
+          bool2: '*****'
+        })
+      end
+    end
+
+    context 'when nil present' do
+      let(:pointers) { ['/nil'] }
+      let(:data) do
+        {
+          nil: nil,
+          nil2: nil
+        }
+      end
+
+      it 'masks only if not in whitelist' do
+        expect(processed_data).to eq({
+          nil: nil,
+          nil2: '*****'
+        })
+      end
+    end
+
+    context 'when numbers present' do
+      let(:data) do
+        {
+          integer: 1,
+          float: 2.03,
+          integer2: 3,
+          float2: 3.34324
+        }
+      end
+      let(:pointers) { ['/integer', '/float'] }
+
+      it 'masks only if not in whitelist' do
+        expect(processed_data).to eq({
+          integer: 1,
+          float: 2.03,
+          integer2: '*****',
+          float2: '*****'
+        })
+      end
+    end
 
-      it 'masks it with asteriks' do
-        expect(processed_data).to eq(bool: '*****')
+    context 'when symbol present' do
+      let(:data) do
+        {
+          symbol1: :symbol1,
+          symbol2: :symbol2
+        }
+      end
+      let(:pointers) { ['/symbol1'] }
+
+      it 'masks only if not in whitelist' do
+        expect(processed_data).to eq({
+          symbol1: :symbol1,
+          symbol2: '*****'
+        })
+      end
+    end
+
+    context 'when date time present' do
+      let(:data) do
+        {
+          date: Date.new(2023, 12, 12),
+          time: Time.new(2023, 12, 13),
+          datetime: DateTime.new(2023, 12, 14)
+        }
+      end
+      let(:pointers) { ['/date', '/time', '/datetime'] }
+
+      it 'shows dates' do
+        expect(processed_data).to eq({
+          date: Date.new(2023, 12, 12),
+          time: Time.new(2023, 12, 13),
+          datetime: DateTime.new(2023, 12, 14)
+        })
+      end
+    end
+
+    context 'when unsupported object present' do
+      let(:pointers) { ['/field'] }
+      let(:some_class) do
+        Class.new do
+          attr_accessor :some_attribute
+
+          def initialize
+            @some_attribute = 'some value'
+          end
+        end.new
+      end
+      let(:data) { {field: some_class} }
+
+      it 'masks the object' do
+        expect(processed_data).to eq(
+          field: '*****'
+        )
       end
     end
 
@@ -312,6 +415,110 @@ def process(pointers, data)
       end
     end
 
+    context 'when boolean present' do
+      let(:pointers) { ['/bool'] }
+      let(:data) do
+        {
+          bool: true,
+          bool2: true
+        }
+      end
+
+      it 'prunes only if not in whitelist' do
+        expect(processed_data).to eq({
+          bool: true
+        })
+      end
+    end
+
+    context 'when nil present' do
+      let(:pointers) { ['/nil'] }
+      let(:data) do
+        {
+          nil: nil,
+          nil2: nil
+        }
+      end
+
+      it 'prunes only if not in whitelist' do
+        expect(processed_data).to eq({
+          nil: nil
+        })
+      end
+    end
+
+    context 'when numbers present' do
+      let(:data) do
+        {
+          integer: 1,
+          float: 2.03,
+          integer2: 3,
+          float2: 3.34324
+        }
+      end
+      let(:pointers) { ['/integer', '/float'] }
+
+      it 'prunes only if not in whitelist' do
+        expect(processed_data).to eq({
+          integer: 1,
+          float: 2.03
+        })
+      end
+    end
+
+    context 'when symbol present' do
+      let(:data) do
+        {
+          symbol1: :symbol1,
+          symbol2: :symbol2
+        }
+      end
+      let(:pointers) { ['/symbol1'] }
+
+      it 'prunes only if not in whitelist' do
+        expect(processed_data).to eq({
+          symbol1: :symbol1
+        })
+      end
+    end
+
+    context 'when date time present' do
+      let(:data) do
+        {
+          date: Date.new(2023, 12, 12),
+          time: Time.new(2023, 12, 13),
+          datetime: DateTime.new(2023, 12, 14)
+        }
+      end
+      let(:pointers) { ['/date', '/time', '/datetime'] }
+
+      it 'shows dates' do
+        expect(processed_data).to eq({
+          date: Date.new(2023, 12, 12),
+          time: Time.new(2023, 12, 13),
+          datetime: DateTime.new(2023, 12, 14)
+        })
+      end
+    end
+
+    context 'when unsupported object present' do
+      let(:pointers) { ['/class'] }
+      let(:some_class) do
+        Class.new do
+          attr_accessor :some_attribute
+
+          def initialize
+            @some_attribute = 'some value'
+          end
+        end.new
+      end
+      let(:data) { {field: some_class} }
+
+      it 'does not return the object' do
+        expect(processed_data).to eq({class: nil})
+      end
+    end
+
     def process(pointers, data)
       described_class.new(pointers: pointers, action: :prune).process(data)
     end