YQ Connector: prepare code base for S3 integration

1. Кодовая база Коннектора переписана с помощью Go дженериков так, чтобы добавление нового источника данных (в частности S3 + csv) максимально переиспользовало имеющийся код (чтобы сохранялась логика нарезания на блоки данных, учёт трафика и пр.)
2. API Connector расширено для работы с S3, но ещё пока не протестировано.

1 files changed, 69 insertions, 0 deletions

diff --git a/vendor/github.com/aws/smithy-go/middleware/stack_test.go b/vendor/github.com/aws/smithy-go/middleware/stack_test.go
new file mode 100644
index 0000000000..6ec4a99c9e
--- /dev/null
+++ b/vendor/github.com/aws/smithy-go/middleware/stack_test.go
@@ -0,0 +1,69 @@
+package middleware
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestStackList(t *testing.T) {
+	s := NewStack("fooStack", func() interface{} { return struct{}{} })
+
+	s.Initialize.Add(mockInitializeMiddleware("first"), After)
+	s.Serialize.Add(mockSerializeMiddleware("second"), After)
+	s.Build.Add(mockBuildMiddleware("third"), After)
+	s.Finalize.Add(mockFinalizeMiddleware("fourth"), After)
+	s.Deserialize.Add(mockDeserializeMiddleware("fifth"), After)
+
+	actual := s.List()
+
+	expect := []string{
+		"fooStack",
+		(*InitializeStep)(nil).ID(),
+		"first",
+		(*SerializeStep)(nil).ID(),
+		"second",
+		(*BuildStep)(nil).ID(),
+		"third",
+		(*FinalizeStep)(nil).ID(),
+		"fourth",
+		(*DeserializeStep)(nil).ID(),
+		"fifth",
+	}
+
+	if diff := cmp.Diff(expect, actual); len(diff) != 0 {
+		t.Errorf("expect and actual stack list differ\n%s", diff)
+	}
+}
+
+func TestStackString(t *testing.T) {
+	s := NewStack("fooStack", func() interface{} { return struct{}{} })
+
+	s.Initialize.Add(mockInitializeMiddleware("first"), After)
+	s.Serialize.Add(mockSerializeMiddleware("second"), After)
+	s.Build.Add(mockBuildMiddleware("third"), After)
+	s.Finalize.Add(mockFinalizeMiddleware("fourth"), After)
+	s.Deserialize.Add(mockDeserializeMiddleware("fifth"), After)
+
+	actual := s.String()
+
+	expect := strings.Join([]string{
+		"fooStack",
+		"\t" + (*InitializeStep)(nil).ID(),
+		"\t\t" + "first",
+		"\t" + (*SerializeStep)(nil).ID(),
+		"\t\t" + "second",
+		"\t" + (*BuildStep)(nil).ID(),
+		"\t\t" + "third",
+		"\t" + (*FinalizeStep)(nil).ID(),
+		"\t\t" + "fourth",
+		"\t" + (*DeserializeStep)(nil).ID(),
+		"\t\t" + "fifth",
+		"",
+	}, "\n")
+
+	if diff := cmp.Diff(expect, actual); len(diff) != 0 {
+		t.Errorf("expect and actual stack list differ\n%s", diff)
+	}
+}