Use epoch seconds instead of milliseconds in cbor encode/decode (#3171)

Author: alextwoods

gems/aws-sdk-core/CHANGELOG.md

@@ -1,6 +1,8 @@
 Unreleased Changes
 ------------------
 
+* Issue - Use epoch seconds instead of milliseconds in cbor encode/decode.
+
 * Issue - Add handling of block in response delegation (#3169). 
 
 3.216.0 (2025-01-15)

gems/aws-sdk-core/lib/aws-sdk-core/cbor/decoder.rb

@@ -61,9 +61,7 @@ def decode_item
         when :tag
           case (tag = read_tag)
           when TAG_TYPE_EPOCH
-            type = peek_type
             item = decode_item
-            item /= 1000.0 if type == :integer
             Time.at(item)
           when TAG_TYPE_BIGNUM, TAG_TYPE_NEG_BIGNUM
             read_bignum(tag)

gems/aws-sdk-core/lib/aws-sdk-core/cbor/encoder.rb

@@ -226,8 +226,8 @@ def add_tag(tag)
 
       def add_time(value)
         head(MAJOR_TYPE_TAG, TAG_TYPE_EPOCH)
-        epoch_ms = (value.to_f * 1000).to_i
-        add_integer(epoch_ms)
+        epoch = value.to_f
+        add_double(epoch)
       end
 
       def bignum_to_bytes(value)

gems/aws-sdk-core/spec/aws/cbor/decoder_spec.rb

@@ -63,7 +63,7 @@ def decode_half_bytes(half)
         end
 
         it 'decodes integer times' do
-          expect(cbor64_decode('wRsAAAFvYQ3z8A=='))
+          expect(cbor64_decode('wftB14MjtYAAAA=='))
             .to eq(Time.parse('2020-01-01 12:21:42Z'))
         end
 

gems/aws-sdk-core/spec/aws/cbor/encoder_spec.rb

@@ -77,7 +77,7 @@ def cbor64_encode(value)
         end
 
         it 'encodes times' do
-          expect(cbor64_encode(time)).to eq('wRsAAAFvYQ3z8A==')
+          expect(cbor64_encode(time)).to eq('wftB14MjtYAAAA==')
         end
 
         it 'encodes BigDecimals' do