sqs-browse: Added dynamo-browse

Added another tool for browsing DynamoDB tables

internal/dynamo-browse/services/tables/iface.go

@@ -0,0 +1,10 @@
+package tables
+
+import (
+	"context"
+	"github.com/lmika/awstools/internal/dynamo-browse/models"
+)
+
+type TableProvider interface {
+	ScanItems(ctx context.Context, tableName string) ([]models.Item, error)
+}

internal/dynamo-browse/services/tables/service.go

@@ -0,0 +1,52 @@
+package tables
+
+import (
+	"context"
+	"github.com/lmika/awstools/internal/dynamo-browse/models"
+	"github.com/pkg/errors"
+	"sort"
+)
+
+type Service struct {
+	provider TableProvider
+}
+
+func NewService(provider TableProvider) *Service {
+	return &Service{
+		provider: provider,
+	}
+}
+
+func (s *Service) Scan(ctx context.Context, table string) (*models.ResultSet, error) {
+	results, err := s.provider.ScanItems(ctx, table)
+	if err != nil {
+		return nil, errors.Wrapf(err, "unable to scan table %v", table)
+	}
+
+	// Get the columns
+	// TODO: need to get PKs and SKs from table
+	seenColumns := make(map[string]int)
+	seenColumns["pk"] = 0
+	seenColumns["sk"] = 1
+
+	for _, result := range results {
+		for k := range result {
+			if _, isSeen := seenColumns[k]; !isSeen {
+				seenColumns[k] = len(seenColumns)
+			}
+		}
+	}
+
+	columns := make([]string, 0, len(seenColumns))
+	for k := range seenColumns {
+		columns = append(columns, k)
+	}
+	sort.Slice(columns, func(i, j int) bool {
+		return seenColumns[columns[i]] < seenColumns[columns[j]]
+	})
+
+	return &models.ResultSet{
+		Columns: columns,
+		Items: results,
+	}, nil
+}