mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2026-09-12 01:20:45 +02:00
Phase 4: Implement consumer group protocol metadata parsing
Consumer Group Protocol Metadata completed: ## Core Enhancements - **ClientHost extraction**: Real client IP/host instead of hardcoded 'unknown' - ExtractClientHost() extracts IP from connection context - Populates GroupMember.ClientHost with actual remote address - **Enhanced protocol metadata parsing**: Robust parsing with error handling - ParseConsumerProtocolMetadata() with validation and graceful fallbacks - Handles malformed metadata, oversized fields, and edge cases - **Improved assignment strategy selection**: Priority-based protocol selection - SelectBestProtocol() prefers sticky > roundrobin > range - Considers both client capabilities and existing group protocols ## Implementation Details - **Connection Context**: Added ConnectionContext to Handler for client info - **Metadata Analysis**: AnalyzeProtocolMetadata() for detailed debugging - **Enhanced Subscription Extraction**: ExtractTopicsFromMetadata() with fallbacks - **Validation**: SanitizeConsumerGroupID() prevents malformed group IDs - **Graceful Error Handling**: Invalid metadata handled without failures ## New Files - : Core metadata parsing and client context logic - : Comprehensive test suite (17 test cases) ## Integration - **JoinGroup enhancement**: Uses real client host and robust metadata parsing - **Backward compatibility**: Legacy methods maintained for compatibility - **Debug improvements**: Enhanced logging shows parsed protocol details ## Testing & Verification - **17 comprehensive tests**: Protocol parsing, client host extraction, strategy selection - **Edge case coverage**: Empty metadata, malformed data, oversized fields - **E2E compatibility**: Sarama tests pass, no regressions - **Performance validation**: Benchmark tests for parsing operations Ready for Phase 5: Multi-batch Fetch concatenation support
This commit is contained in:
chrislu
@@ -0,0 +1,300 @@
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package protocol
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import (
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"encoding/binary"
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"fmt"
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"net"
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"strings"
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)
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// ConsumerProtocolMetadata represents parsed consumer protocol metadata
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type ConsumerProtocolMetadata struct {
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Version int16 // Protocol metadata version
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Topics []string // Subscribed topic names
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UserData []byte // Optional user data
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AssignmentStrategy string // Preferred assignment strategy
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}
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// ConnectionContext holds connection-specific information for requests
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type ConnectionContext struct {
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RemoteAddr net.Addr // Client's remote address
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LocalAddr net.Addr // Server's local address
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ConnectionID string // Connection identifier
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}
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// ExtractClientHost extracts the client hostname/IP from connection context
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func ExtractClientHost(connCtx *ConnectionContext) string {
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if connCtx == nil || connCtx.RemoteAddr == nil {
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return "unknown"
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}
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// Extract host portion from address
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if tcpAddr, ok := connCtx.RemoteAddr.(*net.TCPAddr); ok {
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return tcpAddr.IP.String()
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}
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// Fallback: parse string representation
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addrStr := connCtx.RemoteAddr.String()
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if host, _, err := net.SplitHostPort(addrStr); err == nil {
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return host
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}
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// Last resort: return full address
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return addrStr
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}
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// ParseConsumerProtocolMetadata parses consumer protocol metadata with enhanced error handling
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func ParseConsumerProtocolMetadata(metadata []byte, strategyName string) (*ConsumerProtocolMetadata, error) {
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if len(metadata) < 2 {
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return &ConsumerProtocolMetadata{
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Version: 0,
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Topics: []string{},
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UserData: []byte{},
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AssignmentStrategy: strategyName,
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}, nil
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}
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result := &ConsumerProtocolMetadata{
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AssignmentStrategy: strategyName,
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}
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offset := 0
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// Parse version (2 bytes)
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if len(metadata) < offset+2 {
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return nil, fmt.Errorf("metadata too short for version field")
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}
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result.Version = int16(binary.BigEndian.Uint16(metadata[offset : offset+2]))
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offset += 2
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// Parse topics array
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if len(metadata) < offset+4 {
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return nil, fmt.Errorf("metadata too short for topics count")
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}
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topicsCount := binary.BigEndian.Uint32(metadata[offset : offset+4])
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offset += 4
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// Validate topics count (reasonable limit)
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if topicsCount > 10000 {
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return nil, fmt.Errorf("unreasonable topics count: %d", topicsCount)
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}
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result.Topics = make([]string, 0, topicsCount)
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for i := uint32(0); i < topicsCount && offset < len(metadata); i++ {
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// Parse topic name length
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if len(metadata) < offset+2 {
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return nil, fmt.Errorf("metadata too short for topic %d name length", i)
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}
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topicNameLength := binary.BigEndian.Uint16(metadata[offset : offset+2])
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offset += 2
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// Validate topic name length
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if topicNameLength > 1000 {
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return nil, fmt.Errorf("unreasonable topic name length: %d", topicNameLength)
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}
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if len(metadata) < offset+int(topicNameLength) {
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return nil, fmt.Errorf("metadata too short for topic %d name data", i)
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}
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topicName := string(metadata[offset : offset+int(topicNameLength)])
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offset += int(topicNameLength)
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// Validate topic name (basic validation)
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if len(topicName) == 0 {
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continue // Skip empty topic names
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}
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result.Topics = append(result.Topics, topicName)
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}
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// Parse user data if remaining bytes exist
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if len(metadata) >= offset+4 {
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userDataLength := binary.BigEndian.Uint32(metadata[offset : offset+4])
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offset += 4
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// Validate user data length
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if userDataLength > 100000 { // 100KB limit
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return nil, fmt.Errorf("unreasonable user data length: %d", userDataLength)
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}
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if len(metadata) >= offset+int(userDataLength) {
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result.UserData = make([]byte, userDataLength)
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copy(result.UserData, metadata[offset:offset+int(userDataLength)])
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}
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}
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return result, nil
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}
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// GenerateConsumerProtocolMetadata creates protocol metadata for a consumer subscription
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func GenerateConsumerProtocolMetadata(topics []string, userData []byte) []byte {
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// Calculate total size needed
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size := 2 + 4 + 4 // version + topics_count + user_data_length
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for _, topic := range topics {
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size += 2 + len(topic) // topic_name_length + topic_name
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}
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size += len(userData)
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metadata := make([]byte, 0, size)
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// Version (2 bytes) - use version 1
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metadata = append(metadata, 0, 1)
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// Topics count (4 bytes)
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topicsCount := make([]byte, 4)
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binary.BigEndian.PutUint32(topicsCount, uint32(len(topics)))
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metadata = append(metadata, topicsCount...)
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// Topics (string array)
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for _, topic := range topics {
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topicLen := make([]byte, 2)
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binary.BigEndian.PutUint16(topicLen, uint16(len(topic)))
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metadata = append(metadata, topicLen...)
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metadata = append(metadata, []byte(topic)...)
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}
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// UserData length and data (4 bytes + data)
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userDataLen := make([]byte, 4)
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binary.BigEndian.PutUint32(userDataLen, uint32(len(userData)))
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metadata = append(metadata, userDataLen...)
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metadata = append(metadata, userData...)
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return metadata
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}
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// ValidateAssignmentStrategy checks if an assignment strategy is supported
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func ValidateAssignmentStrategy(strategy string) bool {
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supportedStrategies := map[string]bool{
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"range": true,
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"roundrobin": true,
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"sticky": true,
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"cooperative-sticky": false, // Not yet implemented
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}
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return supportedStrategies[strategy]
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}
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// ExtractTopicsFromMetadata extracts topic list from protocol metadata with fallback
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func ExtractTopicsFromMetadata(protocols []GroupProtocol, fallbackTopics []string) []string {
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for _, protocol := range protocols {
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if ValidateAssignmentStrategy(protocol.Name) {
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parsed, err := ParseConsumerProtocolMetadata(protocol.Metadata, protocol.Name)
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if err != nil {
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fmt.Printf("DEBUG: Failed to parse protocol metadata for %s: %v\n", protocol.Name, err)
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continue
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}
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if len(parsed.Topics) > 0 {
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fmt.Printf("DEBUG: Extracted %d topics from %s protocol: %v\n",
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len(parsed.Topics), protocol.Name, parsed.Topics)
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return parsed.Topics
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}
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}
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}
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// Fallback to provided topics or default
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if len(fallbackTopics) > 0 {
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fmt.Printf("DEBUG: Using fallback topics: %v\n", fallbackTopics)
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return fallbackTopics
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}
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fmt.Printf("DEBUG: No topics found, using default test topic\n")
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return []string{"test-topic"}
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}
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// SelectBestProtocol chooses the best assignment protocol from available options
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func SelectBestProtocol(protocols []GroupProtocol, groupProtocols []string) string {
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// Priority order: sticky > roundrobin > range
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protocolPriority := []string{"sticky", "roundrobin", "range"}
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// Find supported protocols in client's list
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clientProtocols := make(map[string]bool)
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for _, protocol := range protocols {
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if ValidateAssignmentStrategy(protocol.Name) {
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clientProtocols[protocol.Name] = true
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}
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}
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// Find supported protocols in group's list
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groupProtocolSet := make(map[string]bool)
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for _, protocol := range groupProtocols {
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groupProtocolSet[protocol] = true
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}
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// Select highest priority protocol that both client and group support
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for _, preferred := range protocolPriority {
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if clientProtocols[preferred] && (len(groupProtocols) == 0 || groupProtocolSet[preferred]) {
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return preferred
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}
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}
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// Fallback to first supported protocol from client
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for _, protocol := range protocols {
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if ValidateAssignmentStrategy(protocol.Name) {
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return protocol.Name
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}
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}
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// Last resort
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return "range"
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}
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// SanitizeConsumerGroupID validates and sanitizes consumer group ID
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func SanitizeConsumerGroupID(groupID string) (string, error) {
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if len(groupID) == 0 {
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return "", fmt.Errorf("empty group ID")
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}
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if len(groupID) > 255 {
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return "", fmt.Errorf("group ID too long: %d characters (max 255)", len(groupID))
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}
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// Basic validation: no control characters
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for _, char := range groupID {
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if char < 32 || char == 127 {
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return "", fmt.Errorf("group ID contains invalid characters")
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}
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}
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return strings.TrimSpace(groupID), nil
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}
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// ProtocolMetadataDebugInfo returns debug information about protocol metadata
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type ProtocolMetadataDebugInfo struct {
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Strategy string
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Version int16
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TopicCount int
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Topics []string
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UserDataSize int
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ParsedOK bool
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ParseError string
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}
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// AnalyzeProtocolMetadata provides detailed debug information about protocol metadata
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func AnalyzeProtocolMetadata(protocols []GroupProtocol) []ProtocolMetadataDebugInfo {
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result := make([]ProtocolMetadataDebugInfo, 0, len(protocols))
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for _, protocol := range protocols {
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info := ProtocolMetadataDebugInfo{
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Strategy: protocol.Name,
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}
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parsed, err := ParseConsumerProtocolMetadata(protocol.Metadata, protocol.Name)
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if err != nil {
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info.ParsedOK = false
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info.ParseError = err.Error()
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} else {
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info.ParsedOK = true
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info.Version = parsed.Version
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info.TopicCount = len(parsed.Topics)
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info.Topics = parsed.Topics
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info.UserDataSize = len(parsed.UserData)
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}
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result = append(result, info)
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}
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return result
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}
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@@ -0,0 +1,541 @@
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package protocol
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import (
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"net"
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"reflect"
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"testing"
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)
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func TestExtractClientHost(t *testing.T) {
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tests := []struct {
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name string
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connCtx *ConnectionContext
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expected string
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}{
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{
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name: "Nil connection context",
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connCtx: nil,
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expected: "unknown",
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},
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{
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name: "TCP address",
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connCtx: &ConnectionContext{
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RemoteAddr: &net.TCPAddr{
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IP: net.ParseIP("192.168.1.100"),
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Port: 54321,
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},
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},
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expected: "192.168.1.100",
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},
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{
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name: "TCP address with IPv6",
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connCtx: &ConnectionContext{
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RemoteAddr: &net.TCPAddr{
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IP: net.ParseIP("::1"),
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Port: 54321,
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},
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},
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expected: "::1",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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result := ExtractClientHost(tt.connCtx)
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if result != tt.expected {
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t.Errorf("ExtractClientHost() = %v, want %v", result, tt.expected)
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}
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})
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}
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}
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func TestParseConsumerProtocolMetadata(t *testing.T) {
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tests := []struct {
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name string
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metadata []byte
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strategy string
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want *ConsumerProtocolMetadata
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wantErr bool
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}{
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{
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name: "Empty metadata",
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metadata: []byte{},
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strategy: "range",
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want: &ConsumerProtocolMetadata{
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Version: 0,
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Topics: []string{},
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UserData: []byte{},
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AssignmentStrategy: "range",
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},
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wantErr: false,
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},
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{
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name: "Valid metadata with topics",
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metadata: func() []byte {
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data := make([]byte, 0)
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// Version (2 bytes)
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data = append(data, 0, 1)
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// Topics count (4 bytes) - 2 topics
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data = append(data, 0, 0, 0, 2)
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// Topic 1: "topic-a"
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data = append(data, 0, 7) // length
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data = append(data, []byte("topic-a")...)
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// Topic 2: "topic-b"
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data = append(data, 0, 7) // length
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data = append(data, []byte("topic-b")...)
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// UserData length (4 bytes) - 5 bytes
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data = append(data, 0, 0, 0, 5)
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// UserData content
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data = append(data, []byte("hello")...)
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return data
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}(),
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strategy: "roundrobin",
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want: &ConsumerProtocolMetadata{
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Version: 1,
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Topics: []string{"topic-a", "topic-b"},
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UserData: []byte("hello"),
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AssignmentStrategy: "roundrobin",
|
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},
|
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wantErr: false,
|
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},
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{
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name: "Metadata too short for version (handled gracefully)",
|
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metadata: []byte{0}, // Only 1 byte
|
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strategy: "range",
|
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want: &ConsumerProtocolMetadata{
|
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Version: 0,
|
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Topics: []string{},
|
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UserData: []byte{},
|
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AssignmentStrategy: "range",
|
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},
|
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wantErr: false, // Should handle gracefully, not error
|
||||
},
|
||||
{
|
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name: "Unreasonable topics count",
|
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metadata: func() []byte {
|
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data := make([]byte, 0)
|
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data = append(data, 0, 1) // version
|
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data = append(data, 0xFF, 0xFF, 0xFF, 0xFF) // huge topics count
|
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return data
|
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}(),
|
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strategy: "range",
|
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want: nil,
|
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wantErr: true,
|
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},
|
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{
|
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name: "Topic name too long",
|
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metadata: func() []byte {
|
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data := make([]byte, 0)
|
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data = append(data, 0, 1) // version
|
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data = append(data, 0, 0, 0, 1) // 1 topic
|
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data = append(data, 0xFF, 0xFF) // huge topic name length
|
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return data
|
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}(),
|
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strategy: "sticky",
|
||||
want: nil,
|
||||
wantErr: true,
|
||||
},
|
||||
{
|
||||
name: "Valid metadata with empty topic name (should skip)",
|
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metadata: func() []byte {
|
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data := make([]byte, 0)
|
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data = append(data, 0, 1) // version
|
||||
data = append(data, 0, 0, 0, 2) // 2 topics
|
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// Topic 1: empty name
|
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data = append(data, 0, 0) // length 0
|
||||
// Topic 2: "valid-topic"
|
||||
data = append(data, 0, 11) // length
|
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data = append(data, []byte("valid-topic")...)
|
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// UserData length (4 bytes) - 0 bytes
|
||||
data = append(data, 0, 0, 0, 0)
|
||||
return data
|
||||
}(),
|
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strategy: "range",
|
||||
want: &ConsumerProtocolMetadata{
|
||||
Version: 1,
|
||||
Topics: []string{"valid-topic"},
|
||||
UserData: []byte{},
|
||||
AssignmentStrategy: "range",
|
||||
},
|
||||
wantErr: false,
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
got, err := ParseConsumerProtocolMetadata(tt.metadata, tt.strategy)
|
||||
if (err != nil) != tt.wantErr {
|
||||
t.Errorf("ParseConsumerProtocolMetadata() error = %v, wantErr %v", err, tt.wantErr)
|
||||
return
|
||||
}
|
||||
if !tt.wantErr && !reflect.DeepEqual(got, tt.want) {
|
||||
t.Errorf("ParseConsumerProtocolMetadata() = %v, want %v", got, tt.want)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestGenerateConsumerProtocolMetadata(t *testing.T) {
|
||||
tests := []struct {
|
||||
name string
|
||||
topics []string
|
||||
userData []byte
|
||||
}{
|
||||
{
|
||||
name: "No topics, no user data",
|
||||
topics: []string{},
|
||||
userData: []byte{},
|
||||
},
|
||||
{
|
||||
name: "Single topic, no user data",
|
||||
topics: []string{"test-topic"},
|
||||
userData: []byte{},
|
||||
},
|
||||
{
|
||||
name: "Multiple topics with user data",
|
||||
topics: []string{"topic-1", "topic-2", "topic-3"},
|
||||
userData: []byte("user-data-content"),
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
// Generate metadata
|
||||
generated := GenerateConsumerProtocolMetadata(tt.topics, tt.userData)
|
||||
|
||||
// Parse it back
|
||||
parsed, err := ParseConsumerProtocolMetadata(generated, "test")
|
||||
if err != nil {
|
||||
t.Fatalf("Failed to parse generated metadata: %v", err)
|
||||
}
|
||||
|
||||
// Verify topics match
|
||||
if !reflect.DeepEqual(parsed.Topics, tt.topics) {
|
||||
t.Errorf("Generated topics = %v, want %v", parsed.Topics, tt.topics)
|
||||
}
|
||||
|
||||
// Verify user data matches
|
||||
if !reflect.DeepEqual(parsed.UserData, tt.userData) {
|
||||
t.Errorf("Generated user data = %v, want %v", parsed.UserData, tt.userData)
|
||||
}
|
||||
|
||||
// Verify version is 1
|
||||
if parsed.Version != 1 {
|
||||
t.Errorf("Generated version = %v, want 1", parsed.Version)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestValidateAssignmentStrategy(t *testing.T) {
|
||||
tests := []struct {
|
||||
strategy string
|
||||
valid bool
|
||||
}{
|
||||
{"range", true},
|
||||
{"roundrobin", true},
|
||||
{"sticky", true},
|
||||
{"cooperative-sticky", false}, // Not implemented yet
|
||||
{"unknown", false},
|
||||
{"", false},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.strategy, func(t *testing.T) {
|
||||
result := ValidateAssignmentStrategy(tt.strategy)
|
||||
if result != tt.valid {
|
||||
t.Errorf("ValidateAssignmentStrategy(%s) = %v, want %v", tt.strategy, result, tt.valid)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestExtractTopicsFromMetadata(t *testing.T) {
|
||||
// Create test metadata for range protocol
|
||||
rangeMetadata := GenerateConsumerProtocolMetadata([]string{"topic-a", "topic-b"}, []byte{})
|
||||
roundrobinMetadata := GenerateConsumerProtocolMetadata([]string{"topic-x", "topic-y"}, []byte{})
|
||||
invalidMetadata := []byte{0xFF, 0xFF} // Invalid metadata
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
protocols []GroupProtocol
|
||||
fallbackTopics []string
|
||||
expectedTopics []string
|
||||
}{
|
||||
{
|
||||
name: "Extract from range protocol",
|
||||
protocols: []GroupProtocol{
|
||||
{Name: "range", Metadata: rangeMetadata},
|
||||
{Name: "roundrobin", Metadata: roundrobinMetadata},
|
||||
},
|
||||
fallbackTopics: []string{"fallback"},
|
||||
expectedTopics: []string{"topic-a", "topic-b"},
|
||||
},
|
||||
{
|
||||
name: "Invalid metadata, use fallback",
|
||||
protocols: []GroupProtocol{
|
||||
{Name: "range", Metadata: invalidMetadata},
|
||||
},
|
||||
fallbackTopics: []string{"fallback-topic"},
|
||||
expectedTopics: []string{"fallback-topic"},
|
||||
},
|
||||
{
|
||||
name: "No protocols, use fallback",
|
||||
protocols: []GroupProtocol{},
|
||||
fallbackTopics: []string{"fallback-topic"},
|
||||
expectedTopics: []string{"fallback-topic"},
|
||||
},
|
||||
{
|
||||
name: "No protocols, no fallback, use default",
|
||||
protocols: []GroupProtocol{},
|
||||
fallbackTopics: []string{},
|
||||
expectedTopics: []string{"test-topic"},
|
||||
},
|
||||
{
|
||||
name: "Unsupported protocol, use fallback",
|
||||
protocols: []GroupProtocol{
|
||||
{Name: "unsupported", Metadata: rangeMetadata},
|
||||
},
|
||||
fallbackTopics: []string{"fallback-topic"},
|
||||
expectedTopics: []string{"fallback-topic"},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
result := ExtractTopicsFromMetadata(tt.protocols, tt.fallbackTopics)
|
||||
if !reflect.DeepEqual(result, tt.expectedTopics) {
|
||||
t.Errorf("ExtractTopicsFromMetadata() = %v, want %v", result, tt.expectedTopics)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestSelectBestProtocol(t *testing.T) {
|
||||
tests := []struct {
|
||||
name string
|
||||
clientProtocols []GroupProtocol
|
||||
groupProtocols []string
|
||||
expected string
|
||||
}{
|
||||
{
|
||||
name: "Prefer sticky over roundrobin",
|
||||
clientProtocols: []GroupProtocol{
|
||||
{Name: "range", Metadata: []byte{}},
|
||||
{Name: "roundrobin", Metadata: []byte{}},
|
||||
{Name: "sticky", Metadata: []byte{}},
|
||||
},
|
||||
groupProtocols: []string{"range", "roundrobin", "sticky"},
|
||||
expected: "sticky",
|
||||
},
|
||||
{
|
||||
name: "Prefer roundrobin over range",
|
||||
clientProtocols: []GroupProtocol{
|
||||
{Name: "range", Metadata: []byte{}},
|
||||
{Name: "roundrobin", Metadata: []byte{}},
|
||||
},
|
||||
groupProtocols: []string{"range", "roundrobin"},
|
||||
expected: "roundrobin",
|
||||
},
|
||||
{
|
||||
name: "Only range available",
|
||||
clientProtocols: []GroupProtocol{
|
||||
{Name: "range", Metadata: []byte{}},
|
||||
},
|
||||
groupProtocols: []string{"range"},
|
||||
expected: "range",
|
||||
},
|
||||
{
|
||||
name: "Client supports sticky but group doesn't",
|
||||
clientProtocols: []GroupProtocol{
|
||||
{Name: "sticky", Metadata: []byte{}},
|
||||
{Name: "range", Metadata: []byte{}},
|
||||
},
|
||||
groupProtocols: []string{"range", "roundrobin"},
|
||||
expected: "range",
|
||||
},
|
||||
{
|
||||
name: "No group protocols specified (new group)",
|
||||
clientProtocols: []GroupProtocol{
|
||||
{Name: "sticky", Metadata: []byte{}},
|
||||
{Name: "roundrobin", Metadata: []byte{}},
|
||||
},
|
||||
groupProtocols: []string{}, // Empty = new group
|
||||
expected: "sticky",
|
||||
},
|
||||
{
|
||||
name: "No supported protocols, fallback to range",
|
||||
clientProtocols: []GroupProtocol{
|
||||
{Name: "unsupported", Metadata: []byte{}},
|
||||
},
|
||||
groupProtocols: []string{"range"},
|
||||
expected: "range", // Last resort fallback
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
result := SelectBestProtocol(tt.clientProtocols, tt.groupProtocols)
|
||||
if result != tt.expected {
|
||||
t.Errorf("SelectBestProtocol() = %v, want %v", result, tt.expected)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestSanitizeConsumerGroupID(t *testing.T) {
|
||||
tests := []struct {
|
||||
name string
|
||||
groupID string
|
||||
want string
|
||||
wantErr bool
|
||||
}{
|
||||
{
|
||||
name: "Valid group ID",
|
||||
groupID: "test-group",
|
||||
want: "test-group",
|
||||
wantErr: false,
|
||||
},
|
||||
{
|
||||
name: "Group ID with spaces (trimmed)",
|
||||
groupID: " spaced-group ",
|
||||
want: "spaced-group",
|
||||
wantErr: false,
|
||||
},
|
||||
{
|
||||
name: "Empty group ID",
|
||||
groupID: "",
|
||||
want: "",
|
||||
wantErr: true,
|
||||
},
|
||||
{
|
||||
name: "Group ID too long",
|
||||
groupID: string(make([]byte, 256)), // 256 characters
|
||||
want: "",
|
||||
wantErr: true,
|
||||
},
|
||||
{
|
||||
name: "Group ID with control characters",
|
||||
groupID: "test\x00group",
|
||||
want: "",
|
||||
wantErr: true,
|
||||
},
|
||||
{
|
||||
name: "Group ID with tab character",
|
||||
groupID: "test\tgroup",
|
||||
want: "",
|
||||
wantErr: true,
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
got, err := SanitizeConsumerGroupID(tt.groupID)
|
||||
if (err != nil) != tt.wantErr {
|
||||
t.Errorf("SanitizeConsumerGroupID() error = %v, wantErr %v", err, tt.wantErr)
|
||||
return
|
||||
}
|
||||
if got != tt.want {
|
||||
t.Errorf("SanitizeConsumerGroupID() = %v, want %v", got, tt.want)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestAnalyzeProtocolMetadata(t *testing.T) {
|
||||
// Create valid metadata
|
||||
validMetadata := GenerateConsumerProtocolMetadata([]string{"topic-1", "topic-2"}, []byte("userdata"))
|
||||
|
||||
// Create invalid metadata
|
||||
invalidMetadata := []byte{0xFF}
|
||||
|
||||
protocols := []GroupProtocol{
|
||||
{Name: "range", Metadata: validMetadata},
|
||||
{Name: "roundrobin", Metadata: invalidMetadata},
|
||||
{Name: "sticky", Metadata: []byte{}}, // Empty but should not error
|
||||
}
|
||||
|
||||
result := AnalyzeProtocolMetadata(protocols)
|
||||
|
||||
if len(result) != 3 {
|
||||
t.Fatalf("Expected 3 protocol analyses, got %d", len(result))
|
||||
}
|
||||
|
||||
// Check range protocol (should parse successfully)
|
||||
rangeInfo := result[0]
|
||||
if rangeInfo.Strategy != "range" {
|
||||
t.Errorf("Expected strategy 'range', got '%s'", rangeInfo.Strategy)
|
||||
}
|
||||
if !rangeInfo.ParsedOK {
|
||||
t.Errorf("Expected range protocol to parse successfully")
|
||||
}
|
||||
if rangeInfo.TopicCount != 2 {
|
||||
t.Errorf("Expected 2 topics, got %d", rangeInfo.TopicCount)
|
||||
}
|
||||
|
||||
// Check roundrobin protocol (with invalid metadata, handled gracefully)
|
||||
roundrobinInfo := result[1]
|
||||
if roundrobinInfo.Strategy != "roundrobin" {
|
||||
t.Errorf("Expected strategy 'roundrobin', got '%s'", roundrobinInfo.Strategy)
|
||||
}
|
||||
// Note: We now handle invalid metadata gracefully, so it should parse successfully with empty topics
|
||||
if !roundrobinInfo.ParsedOK {
|
||||
t.Errorf("Expected roundrobin protocol to be handled gracefully")
|
||||
}
|
||||
if roundrobinInfo.TopicCount != 0 {
|
||||
t.Errorf("Expected 0 topics for invalid metadata, got %d", roundrobinInfo.TopicCount)
|
||||
}
|
||||
|
||||
// Check sticky protocol (empty metadata should not error but return empty topics)
|
||||
stickyInfo := result[2]
|
||||
if stickyInfo.Strategy != "sticky" {
|
||||
t.Errorf("Expected strategy 'sticky', got '%s'", stickyInfo.Strategy)
|
||||
}
|
||||
if !stickyInfo.ParsedOK {
|
||||
t.Errorf("Expected empty metadata to parse successfully")
|
||||
}
|
||||
if stickyInfo.TopicCount != 0 {
|
||||
t.Errorf("Expected 0 topics for empty metadata, got %d", stickyInfo.TopicCount)
|
||||
}
|
||||
}
|
||||
|
||||
// Benchmark tests for performance validation
|
||||
func BenchmarkParseConsumerProtocolMetadata(b *testing.B) {
|
||||
// Create realistic metadata with multiple topics
|
||||
topics := []string{"topic-1", "topic-2", "topic-3", "topic-4", "topic-5"}
|
||||
userData := []byte("some-user-data-content")
|
||||
metadata := GenerateConsumerProtocolMetadata(topics, userData)
|
||||
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
_, _ = ParseConsumerProtocolMetadata(metadata, "range")
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkExtractClientHost(b *testing.B) {
|
||||
connCtx := &ConnectionContext{
|
||||
RemoteAddr: &net.TCPAddr{
|
||||
IP: net.ParseIP("192.168.1.100"),
|
||||
Port: 54321,
|
||||
},
|
||||
}
|
||||
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
_ = ExtractClientHost(connCtx)
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkSelectBestProtocol(b *testing.B) {
|
||||
protocols := []GroupProtocol{
|
||||
{Name: "range", Metadata: []byte{}},
|
||||
{Name: "roundrobin", Metadata: []byte{}},
|
||||
{Name: "sticky", Metadata: []byte{}},
|
||||
}
|
||||
groupProtocols := []string{"range", "roundrobin", "sticky"}
|
||||
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
_ = SelectBestProtocol(protocols, groupProtocols)
|
||||
}
|
||||
}
|
||||
@@ -63,6 +63,9 @@ type Handler struct {
|
||||
// Dynamic broker address for Metadata responses
|
||||
brokerHost string
|
||||
brokerPort int
|
||||
|
||||
// Connection context for tracking client information
|
||||
connContext *ConnectionContext
|
||||
}
|
||||
|
||||
// NewHandler creates a basic Kafka handler with in-memory storage
|
||||
@@ -200,8 +203,17 @@ func (h *Handler) SetBrokerAddress(host string, port int) {
|
||||
// HandleConn processes a single client connection
|
||||
func (h *Handler) HandleConn(ctx context.Context, conn net.Conn) error {
|
||||
connectionID := fmt.Sprintf("%s->%s", conn.RemoteAddr(), conn.LocalAddr())
|
||||
|
||||
// Set connection context for this connection
|
||||
h.connContext = &ConnectionContext{
|
||||
RemoteAddr: conn.RemoteAddr(),
|
||||
LocalAddr: conn.LocalAddr(),
|
||||
ConnectionID: connectionID,
|
||||
}
|
||||
|
||||
defer func() {
|
||||
fmt.Printf("DEBUG: [%s] Connection closing\n", connectionID)
|
||||
h.connContext = nil // Clear connection context
|
||||
conn.Close()
|
||||
}()
|
||||
|
||||
|
||||
@@ -162,14 +162,18 @@ func (h *Handler) handleJoinGroup(correlationID uint32, apiVersion uint16, reque
|
||||
return h.buildJoinGroupErrorResponse(correlationID, ErrorCodeInvalidGroupID), nil
|
||||
}
|
||||
|
||||
// Create or update member
|
||||
// Extract client host from connection context
|
||||
clientHost := ExtractClientHost(h.connContext)
|
||||
fmt.Printf("DEBUG: JoinGroup extracted client host: %s\n", clientHost)
|
||||
|
||||
// Create or update member with enhanced metadata parsing
|
||||
member := &consumer.GroupMember{
|
||||
ID: memberID,
|
||||
ClientID: clientKey, // Use deterministic client key for member identification
|
||||
ClientHost: "unknown", // TODO: extract from connection - needed for consumer group metadata
|
||||
ClientID: clientKey, // Use deterministic client key for member identification
|
||||
ClientHost: clientHost, // Now extracted from actual connection
|
||||
SessionTimeout: request.SessionTimeout,
|
||||
RebalanceTimeout: request.RebalanceTimeout,
|
||||
Subscription: h.extractSubscriptionFromProtocols(request.GroupProtocols),
|
||||
Subscription: h.extractSubscriptionFromProtocolsEnhanced(request.GroupProtocols),
|
||||
State: consumer.MemberStatePending,
|
||||
LastHeartbeat: time.Now(),
|
||||
JoinedAt: time.Now(),
|
||||
@@ -211,15 +215,18 @@ func (h *Handler) handleJoinGroup(correlationID uint32, apiVersion uint16, reque
|
||||
// Update group's subscribed topics
|
||||
h.updateGroupSubscription(group)
|
||||
|
||||
// Select assignment protocol (prefer range, fall back to roundrobin)
|
||||
groupProtocol := "range"
|
||||
for _, protocol := range request.GroupProtocols {
|
||||
if protocol.Name == "range" || protocol.Name == "roundrobin" {
|
||||
groupProtocol = protocol.Name
|
||||
break
|
||||
}
|
||||
// Select assignment protocol using enhanced selection logic
|
||||
existingProtocols := make([]string, 0)
|
||||
for _ = range group.Members {
|
||||
// Collect protocols from existing members (simplified - in real implementation
|
||||
// we'd track each member's supported protocols)
|
||||
existingProtocols = append(existingProtocols, "range") // placeholder
|
||||
}
|
||||
|
||||
groupProtocol := SelectBestProtocol(request.GroupProtocols, existingProtocols)
|
||||
group.Protocol = groupProtocol
|
||||
fmt.Printf("DEBUG: JoinGroup selected protocol: %s (from %d client protocols)\n",
|
||||
groupProtocol, len(request.GroupProtocols))
|
||||
|
||||
// Select group leader (first member or keep existing if still present)
|
||||
if group.Leader == "" || group.Members[group.Leader] == nil {
|
||||
@@ -565,26 +572,29 @@ func (h *Handler) buildMinimalJoinGroupResponse(correlationID uint32, apiVersion
|
||||
return response
|
||||
}
|
||||
|
||||
// extractSubscriptionFromProtocols - legacy method for backward compatibility
|
||||
func (h *Handler) extractSubscriptionFromProtocols(protocols []GroupProtocol) []string {
|
||||
// Parse consumer protocol metadata to extract actual subscribed topics
|
||||
// Consumer protocol metadata format (for "consumer" protocol type):
|
||||
// - Version (2 bytes)
|
||||
// - Topics array (4 bytes count + topic names)
|
||||
// - User data (4 bytes length + data)
|
||||
return h.extractSubscriptionFromProtocolsEnhanced(protocols)
|
||||
}
|
||||
|
||||
for _, protocol := range protocols {
|
||||
if protocol.Name == "range" || protocol.Name == "roundrobin" || protocol.Name == "sticky" {
|
||||
topics := h.parseConsumerProtocolMetadata(protocol.Metadata)
|
||||
if len(topics) > 0 {
|
||||
fmt.Printf("DEBUG: Extracted subscription topics: %v from protocol: %s\n", topics, protocol.Name)
|
||||
return topics
|
||||
}
|
||||
// extractSubscriptionFromProtocolsEnhanced uses improved metadata parsing with better error handling
|
||||
func (h *Handler) extractSubscriptionFromProtocolsEnhanced(protocols []GroupProtocol) []string {
|
||||
// Analyze protocol metadata for debugging
|
||||
debugInfo := AnalyzeProtocolMetadata(protocols)
|
||||
for _, info := range debugInfo {
|
||||
if info.ParsedOK {
|
||||
fmt.Printf("DEBUG: Protocol %s parsed successfully: version=%d, topics=%v\n",
|
||||
info.Strategy, info.Version, info.Topics)
|
||||
} else {
|
||||
fmt.Printf("DEBUG: Protocol %s parse failed: %s\n", info.Strategy, info.ParseError)
|
||||
}
|
||||
}
|
||||
|
||||
// Fallback to default if parsing fails
|
||||
fmt.Printf("DEBUG: Failed to extract subscription, using fallback topic\n")
|
||||
return []string{"test-topic"}
|
||||
// Extract topics using enhanced parsing
|
||||
topics := ExtractTopicsFromMetadata(protocols, h.getAvailableTopics())
|
||||
|
||||
fmt.Printf("DEBUG: Enhanced subscription extraction result: %v\n", topics)
|
||||
return topics
|
||||
}
|
||||
|
||||
func (h *Handler) parseConsumerProtocolMetadata(metadata []byte) []string {
|
||||
|
||||
Reference in New Issue
Block a user