github.com/hack0072008/kafka-go@v1.0.1/protocol/describegroups/describegroups.go (about)

     1  package describegroups
     2  
     3  import (
     4  	"github.com/hack0072008/kafka-go/protocol"
     5  )
     6  
     7  func init() {
     8  	protocol.Register(&Request{}, &Response{})
     9  }
    10  
    11  // Detailed API definition: https://kafka.apache.org/protocol#The_Messages_DescribeGroups
    12  type Request struct {
    13  	Groups                      []string `kafka:"min=v0,max=v4"`
    14  	IncludeAuthorizedOperations bool     `kafka:"min=v3,max=v4"`
    15  }
    16  
    17  func (r *Request) ApiKey() protocol.ApiKey { return protocol.DescribeGroups }
    18  
    19  func (r *Request) Group() string {
    20  	return r.Groups[0]
    21  }
    22  
    23  func (r *Request) Split(cluster protocol.Cluster) (
    24  	[]protocol.Message,
    25  	protocol.Merger,
    26  	error,
    27  ) {
    28  	messages := []protocol.Message{}
    29  
    30  	// Split requests by group since they'll need to go to different coordinators.
    31  	for _, group := range r.Groups {
    32  		messages = append(
    33  			messages,
    34  			&Request{
    35  				Groups:                      []string{group},
    36  				IncludeAuthorizedOperations: r.IncludeAuthorizedOperations,
    37  			},
    38  		)
    39  	}
    40  
    41  	return messages, new(Response), nil
    42  }
    43  
    44  type Response struct {
    45  	ThrottleTimeMs int32           `kafka:"min=v1,max=v4"`
    46  	Groups         []ResponseGroup `kafka:"min=v0,max=v4"`
    47  }
    48  
    49  type ResponseGroup struct {
    50  	ErrorCode            int16                 `kafka:"min=v0,max=v4"`
    51  	GroupID              string                `kafka:"min=v0,max=v4"`
    52  	GroupState           string                `kafka:"min=v0,max=v4"`
    53  	ProtocolType         string                `kafka:"min=v0,max=v4"`
    54  	ProtocolData         string                `kafka:"min=v0,max=v4"`
    55  	Members              []ResponseGroupMember `kafka:"min=v0,max=v4"`
    56  	AuthorizedOperations int32                 `kafka:"min=v3,max=v4"`
    57  }
    58  
    59  type ResponseGroupMember struct {
    60  	MemberID         string `kafka:"min=v0,max=v4"`
    61  	GroupInstanceID  string `kafka:"min=v4,max=v4,nullable"`
    62  	ClientID         string `kafka:"min=v0,max=v4"`
    63  	ClientHost       string `kafka:"min=v0,max=v4"`
    64  	MemberMetadata   []byte `kafka:"min=v0,max=v4"`
    65  	MemberAssignment []byte `kafka:"min=v0,max=v4"`
    66  }
    67  
    68  func (r *Response) ApiKey() protocol.ApiKey { return protocol.DescribeGroups }
    69  
    70  func (r *Response) Merge(requests []protocol.Message, results []interface{}) (
    71  	protocol.Message,
    72  	error,
    73  ) {
    74  	response := &Response{}
    75  
    76  	for _, result := range results {
    77  		subResp := result.(*Response)
    78  
    79  		for _, group := range subResp.Groups {
    80  			response.Groups = append(response.Groups, group)
    81  		}
    82  	}
    83  
    84  	return response, nil
    85  }