[Bug] Resolve some issues with RuleFeeds and Rule Downloads not worki…

…ng with latest `TeamIDs` and `SigningIDs` (#49)

* lint

* updated return types for global rules and feedrules queries

* add testing coverage for these types

* refactor other references/outputs

internal/cli/rules/rules-export.go

@@ -158,13 +158,13 @@ func getRules(client dynamodb.QueryAPI, callback func(globalrules.GlobalRuleRow)
 			err = fmt.Errorf("something went wrong querying global rules: %w", inerr)
 			return
 		}
-		if len(*rules) == 0 {
+		if len(rules) == 0 {
 			break
 		}
 
-		for _, rule := range *rules {
+		for _, rule := range rules {
 			total += 1
-			err = callback(rule)
+			err = callback(*rule)
 			if err != nil {
 				return
 			}

internal/cli/rules/rules.go

@@ -57,13 +57,13 @@ func rules(client dynamodb.QueryAPI, tf flags.TargetFlags, limit int) error {
 			return fmt.Errorf("failed to get rules: %w", err)
 		}
 
-		ruleCount := len(*rules)
+		ruleCount := len(rules)
 		if lastEvaluatedKey != nil {
 			fmt.Printf("Retrieved more than %d rules:\n", ruleCount)
 		} else {
 			fmt.Printf("Retrieved %d rules:\n", ruleCount)
 		}
-		for i, rule := range *rules {
+		for i, rule := range rules {
 			fmt.Println("----- [", i, "] (", rule.SortKey, ")")
 			fmt.Printf("%s: %s\n", renderRule(rule.SantaRule), rule.Description)
 			fmt.Println("")

internal/handlers/preflight/clean_sync.go

@@ -47,10 +47,7 @@ func (c concreteCleanSyncService) determineCleanSync(machineID string, preflight
 
 func determineCleanSyncByRuleCount(preflightRequest *PreflightRequest) bool {
 	ruleCount := preflightRequest.BinaryRuleCount + preflightRequest.CertificateRuleCount + preflightRequest.CompilerRuleCount + preflightRequest.TransitiveRuleCount
-	if ruleCount == 0 {
-		return true
-	}
-	return false
+	return ruleCount == 0
 }
 
 func determineCleanSyncRefresh(timeProvider clock.TimeProvider, machineID string, syncState *syncstate.SyncStateRow) (performCleanSync bool, err error) {

internal/handlers/ruledownload/clean_sync.go

@@ -41,13 +41,16 @@ func (d concreteGlobalRuleDownloader) handle(machineID string, cursor ruledownlo
 		nextCursor.SetDynamodbLastEvaluatedKey(lastEvaluatedKey)
 	}
 
-	rules := make([]rules.SantaRule, len(*globalRules))
-	for i, rule := range *globalRules {
+	rules := make([]rules.SantaRule, len(globalRules))
+	for i, rule := range globalRules {
 		rules[i] = rule.SantaRule
 	}
 
 	return response.APIResponse(
 		http.StatusOK,
-		RuledownloadResponse{Rules: DDBRulesToResponseRules(rules), Cursor: &nextCursor},
+		RuledownloadResponse{
+			Rules:  DDBRulesToResponseRules(rules),
+			Cursor: &nextCursor,
+		},
 	)
 }

internal/handlers/ruledownload/feed_sync.go

@@ -65,13 +65,16 @@ func (d concreteFeedRuleDownloader) handle(machineID string, cursor ruledownload
 		nextCursor.SetDynamodbLastEvaluatedKey(lastEvaluatedKey)
 	}
 
-	rules := make([]rules.SantaRule, len(*feedRules))
-	for i, rule := range *feedRules {
+	rules := make([]rules.SantaRule, len(feedRules))
+	for i, rule := range feedRules {
 		rules[i] = rule.SantaRule
 	}
 
 	return response.APIResponse(
 		http.StatusOK,
-		RuledownloadResponse{Rules: DDBRulesToResponseRules(rules), Cursor: &nextCursor},
+		RuledownloadResponse{
+			Rules:  DDBRulesToResponseRules(rules),
+			Cursor: &nextCursor,
+		},
 	)
 }

pkg/dynamodb/query.go

@@ -27,27 +27,6 @@ func query(tableName string, api dynamodbQueryAPI, input *dynamodb.QueryInput) (
 	ctx, cancel := context.WithTimeout(ctx, defaultTimeout)
 	defer cancel()
 
-	// expressionAttributeValues := map[string]types.AttributeValue{
-	// 	":pk": &types.AttributeValueMemberS{
-	// 		Value: partitionKey,
-	// 	},
-	// }
-	// keyConditionExpression := aws.String("PK = :pk")
-
-	// var exclusiveStartKey map[string]types.AttributeValue
-	// input := &dynamodb.QueryInput{
-	// 	TableName:                 aws.String(tableName),
-	// 	ConsistentRead:            aws.Bool(consistentRead),
-	// 	ExpressionAttributeValues: expressionAttributeValues,
-	// 	KeyConditionExpression:    keyConditionExpression,
-	// 	ExclusiveStartKey:         exclusiveStartKey,
-	// 	FilterExpression: ,
-	// 	Limit:                     limit,
-	// }
-
-	// // var exclusiveStartKey map[string]types.AttributeValue{}
-	// exclusiveStartKey, _ = attributevalue.MarshalMap(cursor)
-
 	input.TableName = aws.String(tableName)
 
 	return api.Query(ctx, input)

pkg/dynamodb/query_test.go

@@ -0,0 +1,102 @@
+package dynamodb
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue"
+	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
+	"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
+	"github.com/stretchr/testify/assert"
+)
+
+type mockQueryAPI func(ctx context.Context, in *dynamodb.QueryInput, optFns ...func(*dynamodb.Options)) (*dynamodb.QueryOutput, error)
+
+func (m mockQueryAPI) Query(ctx context.Context, in *dynamodb.QueryInput, optFns ...func(*dynamodb.Options)) (*dynamodb.QueryOutput, error) {
+	return m(ctx, in, optFns...)
+}
+
+// Per recommendation from AWS docs: https://aws.github.io/aws-sdk-go-v2/docs/unit-testing/
+func Test_query(t *testing.T) {
+	output, err := query(
+		"test_table",
+		mockQueryAPI(func(ctx context.Context, in *dynamodb.QueryInput, optFns ...func(*dynamodb.Options)) (*dynamodb.QueryOutput, error) {
+			assert.Equal(t, "test_table", *in.TableName)
+			assert.Equal(t, "PK = :PK AND SK = :SK", aws.ToString(in.KeyConditionExpression))
+			assert.Equal(t, aws.Int32(5), in.Limit)
+			assert.Equal(
+				t,
+				map[string]string{
+					"#PK":     "PK",
+					"#SK":     "SK",
+					"#Number": "Number",
+				},
+				in.ExpressionAttributeNames,
+			)
+			assert.Equal(
+				t,
+				map[string]types.AttributeValue{},
+				in.ExpressionAttributeValues,
+			)
+
+			countItems := 3
+			items := make([]map[string]types.AttributeValue, countItems)
+
+			for i := range items {
+				items[i] = map[string]types.AttributeValue{
+					"PK": &types.AttributeValueMemberS{
+						Value: fmt.Sprintf("PK#AA#%d", i),
+					},
+					"SK": &types.AttributeValueMemberS{
+						Value: fmt.Sprintf("SK#BB#%d", i),
+					},
+					"Number": &types.AttributeValueMemberN{
+						Value: fmt.Sprintf("%d", i),
+					},
+				}
+			}
+
+			return &dynamodb.QueryOutput{
+				Items:            items,
+				Count:            int32(countItems),
+				LastEvaluatedKey: map[string]types.AttributeValue{},
+			}, nil
+		}),
+		&dynamodb.QueryInput{
+			TableName:              aws.String("test_table"),
+			KeyConditionExpression: aws.String("PK = :PK AND SK = :SK"),
+			ExpressionAttributeNames: map[string]string{
+				"#PK":     "PK",
+				"#SK":     "SK",
+				"#Number": "Number",
+			},
+			ExpressionAttributeValues: map[string]types.AttributeValue{},
+			Limit:                     aws.Int32(5),
+		},
+	)
+
+	if err != nil {
+		t.Errorf("Error was not expected: %v", err)
+	}
+
+	if output == nil {
+		t.Errorf("Output was not expected: %v", output)
+	}
+
+	var items []map[string]interface{}
+
+	err = attributevalue.UnmarshalListOfMaps(output.Items, &items)
+	if err != nil {
+		t.Errorf("failed to unmarshal result from DynamoDB: %s", err.Error())
+	}
+
+	assert.NotEmpty(t, items)
+	assert.Equal(t, 3, len(items))
+	for i, item := range items {
+		assert.Equal(t, fmt.Sprintf("PK#AA#%d", i), item["PK"])
+		assert.Equal(t, fmt.Sprintf("SK#BB#%d", i), item["SK"])
+		assert.Equal(t, float64(i), item["Number"])
+	}
+}

pkg/model/feedrules/query.go

@@ -20,7 +20,7 @@ func GetPaginatedFeedRules(
 	limit int,
 	exclusiveStartKey *dynamodb.PrimaryKey,
 ) (
-	items *[]FeedRuleRow,
+	items []*FeedRuleRow,
 	lastEvaluatedKey *dynamodb.PrimaryKey,
 	err error,
 ) {
@@ -77,7 +77,7 @@ func GetPaginatedFeedRules(
 	// log.Printf("    got %d items from query.", len(*items))
 
 	// To support legacy SHA256 types, we must transform the datasets before returning
-	for _, item := range *items {
+	for _, item := range items {
 		if item.SHA256 != "" && item.Identifier == "" {
 			item.Identifier = item.SHA256
 		}

pkg/model/globalrules/query.go

@@ -7,6 +7,7 @@ import (
 	"github.com/airbnb/rudolph/pkg/dynamodb"
 	"github.com/aws/aws-sdk-go-v2/aws"
 	"github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue"
+	"github.com/aws/aws-sdk-go-v2/feature/dynamodb/expression"
 	awsdynamodb "github.com/aws/aws-sdk-go-v2/service/dynamodb"
 	"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
 )
@@ -21,7 +22,7 @@ func GetPaginatedGlobalRules(
 	limit int,
 	exclusiveStartKey *dynamodb.PrimaryKey,
 ) (
-	items *[]GlobalRuleRow,
+	items []*GlobalRuleRow,
 	lastEvaluatedKey *dynamodb.PrimaryKey,
 	err error,
 ) {
@@ -32,10 +33,10 @@ func GetPaginatedGlobalRules(
 		return
 	}
 
-	keyConditionExpression := aws.String("PK = :pk")
-	expressionAttributeValues := map[string]types.AttributeValue{
-		":pk": &types.AttributeValueMemberS{Value: partitionKey},
-	}
+	keyCond := expression.KeyEqual(
+		expression.Key("PK"), expression.Value(partitionKey),
+	)
+
 	var exclusiveStartKeyInput map[string]types.AttributeValue
 	if exclusiveStartKey != nil {
 		exclusiveStartKeyInput, err = attributevalue.MarshalMap(exclusiveStartKey)
@@ -45,10 +46,16 @@ func GetPaginatedGlobalRules(
 		}
 	}
 
+	expr, err := expression.NewBuilder().WithKeyCondition(keyCond).Build()
+	if err != nil {
+		return
+	}
+
 	input := &awsdynamodb.QueryInput{
 		ConsistentRead:            aws.Bool(false),
-		ExpressionAttributeValues: expressionAttributeValues,
-		KeyConditionExpression:    keyConditionExpression,
+		ExpressionAttributeNames:  expr.Names(),
+		ExpressionAttributeValues: expr.Values(),
+		KeyConditionExpression:    expr.KeyCondition(),
 		ExclusiveStartKey:         exclusiveStartKeyInput,
 		Limit:                     aws.Int32(int32(limit)),
 	}
@@ -64,19 +71,19 @@ func GetPaginatedGlobalRules(
 	if result.LastEvaluatedKey != nil {
 		err = attributevalue.UnmarshalMap(result.LastEvaluatedKey, &lastEvaluatedKey)
 		if err != nil {
-			err = fmt.Errorf("failed to unmarshall LastEvaluatedKey: %w", err)
+			err = fmt.Errorf("failed to UnmarshalMap LastEvaluatedKey: %w", err)
 			return
 		}
 	}
 
 	err = attributevalue.UnmarshalListOfMaps(result.Items, &items)
 	if err != nil {
-		err = fmt.Errorf("failed to unmarshal result from DynamoDB: %w", err)
+		err = fmt.Errorf("failed to UnmarshalListOfMaps result from DynamoDB: %w", err)
 		return
 	}
 
 	// To support legacy SHA256 types, we must transform the datasets before returning
-	for _, item := range *items {
+	for _, item := range items {
 		if item.SHA256 != "" && item.Identifier == "" {
 			item.Identifier = item.SHA256
 		}