#220 member lists missing

.gitignore

@@ -52,3 +52,4 @@ dist/
 # sundry junk used for testing and other fuckery
 /tmp
 *.dot
+*.gz

channels.go

@@ -98,3 +98,30 @@ func (sd *Session) getChannels(ctx context.Context, chanTypes []string, cb func(
 	}
 	return nil
 }
+
+// GetChannelMembers returns a list of all members in a channel.
+func (sd *Session) GetChannelMembers(ctx context.Context, channelID string) ([]string, error) {
+	var ids []string
+	var cursor string
+	for {
+		var uu []string
+		var next string
+		if err := network.WithRetry(ctx, sd.limiter(network.Tier4), sd.options.Tier4Retries, func() error {
+			var err error
+			uu, next, err = sd.client.GetUsersInConversationContext(ctx, &slack.GetUsersInConversationParameters{
+				ChannelID: channelID,
+				Cursor:    cursor,
+			})
+			return err
+		}); err != nil {
+			return nil, err
+		}
+		ids = append(ids, uu...)
+
+		if next == "" {
+			break
+		}
+		cursor = next
+	}
+	return ids, nil
+}

channels_test.go

@@ -7,11 +7,11 @@ import (
 	"testing"
 
 	"github.com/golang/mock/gomock"
-	"github.com/slack-go/slack"
-	"github.com/stretchr/testify/assert"
-
+	"github.com/rusq/slackdump/v2/fsadapter"
 	"github.com/rusq/slackdump/v2/internal/structures"
 	"github.com/rusq/slackdump/v2/types"
+	"github.com/slack-go/slack"
+	"github.com/stretchr/testify/assert"
 )
 
 func TestSession_getChannels(t *testing.T) {
@@ -142,3 +142,97 @@ func TestSession_GetChannels(t *testing.T) {
 		})
 	}
 }
+
+func TestSession_GetChannelMembers(t *testing.T) {
+	type fields struct {
+		wspInfo   *slack.AuthTestResponse
+		fs        fsadapter.FS
+		Users     types.Users
+		UserIndex structures.UserIndex
+		options   Options
+	}
+	type args struct {
+		ctx       context.Context
+		channelID string
+	}
+	tests := []struct {
+		name    string
+		fields  fields
+		args    args
+		expect  func(mc *mockClienter)
+		want    []string
+		wantErr bool
+	}{
+		{
+			"ok, single call",
+			fields{options: DefOptions},
+			args{
+				context.Background(),
+				"chanID",
+			},
+			func(mc *mockClienter) {
+				mc.EXPECT().GetUsersInConversationContext(gomock.Any(), &slack.GetUsersInConversationParameters{
+					ChannelID: "chanID",
+				}).Return([]string{"user1", "user2"}, "", nil)
+			},
+			[]string{"user1", "user2"},
+			false,
+		},
+		{
+			"ok, two calls",
+			fields{options: DefOptions},
+			args{
+				context.Background(),
+				"chanID",
+			},
+			func(mc *mockClienter) {
+				first := mc.EXPECT().GetUsersInConversationContext(gomock.Any(), &slack.GetUsersInConversationParameters{
+					ChannelID: "chanID",
+				}).Return([]string{"user1", "user2"}, "cursor", nil).Times(1)
+				_ = mc.EXPECT().GetUsersInConversationContext(gomock.Any(), &slack.GetUsersInConversationParameters{
+					ChannelID: "chanID",
+					Cursor:    "cursor",
+				}).Return([]string{"user3"}, "", nil).After(first).Times(1)
+			},
+			[]string{"user1", "user2", "user3"},
+			false,
+		},
+		{
+			"error",
+			fields{options: DefOptions},
+			args{
+				context.Background(),
+				"chanID",
+			},
+			func(mc *mockClienter) {
+				mc.EXPECT().GetUsersInConversationContext(gomock.Any(), &slack.GetUsersInConversationParameters{
+					ChannelID: "chanID",
+				}).Return([]string{}, "", errors.New("error fornicating corrugations"))
+			},
+			nil,
+			true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mc := newmockClienter(gomock.NewController(t))
+			tt.expect(mc)
+			sd := &Session{
+				client:    mc,
+				wspInfo:   tt.fields.wspInfo,
+				fs:        tt.fields.fs,
+				Users:     tt.fields.Users,
+				UserIndex: tt.fields.UserIndex,
+				options:   tt.fields.options,
+			}
+			got, err := sd.GetChannelMembers(tt.args.ctx, tt.args.channelID)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("Session.GetChannelMembers() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Session.GetChannelMembers() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

export/export.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/rusq/slackdump/v2/fsadapter"
 	"github.com/slack-go/slack"
+	"golang.org/x/sync/errgroup"
 
 	"github.com/rusq/slackdump/v2"
 	"github.com/rusq/slackdump/v2/internal/network"
@@ -128,10 +129,34 @@ func (se *Export) exclusiveExport(ctx context.Context, uidx structures.UserIndex
 			se.lg.Printf("skipping: %s", ch.ID)
 			return nil
 		}
-		if err := se.exportConversation(ctx, uidx, ch); err != nil {
+
+		var eg errgroup.Group
+
+		// 1. get members
+		var members []string
+		eg.Go(func() error {
+			var err error
+			members, err = se.sd.GetChannelMembers(ctx, ch.ID)
+			if err != nil {
+				return fmt.Errorf("error getting info for %s: %w", ch.ID, err)
+			}
+			return nil
+		})
+
+		// 2. export conversation
+		eg.Go(func() error {
+			if err := se.exportConversation(ctx, uidx, ch); err != nil {
+				return fmt.Errorf("error exporting conversation %s: %w", ch.ID, err)
+			}
+			return nil
+		})
+
+		// wait for both to finish
+		if err := eg.Wait(); err != nil {
 			return err
 		}
 
+		ch.Members = members
 		chans = append(chans, ch)
 		return nil
 
@@ -174,10 +199,31 @@ func (se *Export) inclusiveExport(ctx context.Context, uidx structures.UserIndex
 			return nil, fmt.Errorf("error getting info for %s: %w", sl, err)
 		}
 
-		if err := se.exportConversation(ctx, uidx, *ch); err != nil {
+		var eg errgroup.Group
+
+		var members []string
+		eg.Go(func() error {
+			var err error
+			members, err = se.sd.GetChannelMembers(ctx, ch.ID)
+			if err != nil {
+				return fmt.Errorf("error getting members for %s: %w", sl, err)
+			}
+			return nil
+		})
+
+		eg.Go(func() error {
+			if err := se.exportConversation(ctx, uidx, *ch); err != nil {
+				return fmt.Errorf("error exporting convesation %s: %w", ch.ID, err)
+			}
+			return nil
+		})
+
+		if err := eg.Wait(); err != nil {
 			return nil, err
 		}
 
+		ch.Members = members
+
 		chans = append(chans, *ch)
 	}
 

export/future.go

@@ -32,4 +32,7 @@ type dumper interface {
 
 	// DumpRaw gets data from the Slack API and returns a Conversation object.
 	DumpRaw(ctx context.Context, link string, oldest time.Time, latest time.Time, processFn ...slackdump.ProcessFunc) (*types.Conversation, error)
+
+	// GetChannelMembers gets the list of members for a channel.
+	GetChannelMembers(ctx context.Context, channelID string) ([]string, error)
 }

go.mod

@@ -18,6 +18,7 @@ require (
 	github.com/schollz/progressbar/v3 v3.13.0
 	github.com/slack-go/slack v0.12.1
 	github.com/stretchr/testify v1.8.2
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	golang.org/x/time v0.3.0
 )
 

go.sum

@@ -94,6 +94,7 @@ golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96b
 golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
 golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

internal/network/limiter.go

@@ -13,7 +13,7 @@ const (
 	// Tier1 Tier = 1
 	Tier2 Tier = 20
 	Tier3 Tier = 50
-	// Tier4 Tier = 100
+	Tier4 Tier = 100
 
 	// secPerMin is the number of seconds in a minute, it is here to allow easy
 	// modification of the program, should this value change.

options.go

@@ -22,6 +22,9 @@ type Options struct {
 	Tier3Boost          uint          // Tier-3 limiter boost allows to increase or decrease the slack Tier req/min rate.  Affects all tiers.
 	Tier3Burst          uint          // Tier-3 limiter burst allows to set the limiter burst in req/sec.  Default of 1 is safe.
 	Tier3Retries        int           // number of retries to do when getting 429 on conversation fetch
+	Tier4Boost          uint          // Tier-4 limiter boost allows to increase or decrease the slack Tier req/min rate.  Affects all tiers.
+	Tier4Burst          uint          // Tier-4 limiter burst allows to set the limiter burst in req/sec.  Default of 1 is safe.
+	Tier4Retries        int           // number of retries to do when getting 429 on conversation fetch
 	ConversationsPerReq int           // number of messages we get per 1 API request. bigger the number, less requests, but they become more beefy.
 	ChannelsPerReq      int           // number of channels to fetch per 1 API request.
 	RepliesPerReq       int           // number of thread replies per request (slack default: 1000)
@@ -43,6 +46,9 @@ var DefOptions = Options{
 	Tier3Boost:          120,           // playing safe there, but generally value of 120 is fine.
 	Tier3Burst:          1,             // safe value, who would ever want to modify it? I don't know.
 	Tier3Retries:        3,             // on Tier 3 this was never a problem, even with limiter-boost=120
+	Tier4Boost:          1,
+	Tier4Burst:          1,
+	Tier4Retries:        3,
 	ConversationsPerReq: 200,           // this is the recommended value by Slack. But who listens to them anyway.
 	ChannelsPerReq:      100,           // channels are Tier2 rate limited. Slack is greedy and never returns more than 100 per call.
 	RepliesPerReq:       200,           // the API-default is 1000 (see conversations.replies), but on large threads it may fail (see #54)
@@ -86,7 +92,7 @@ func RetryDownloads(attempts int) Option {
 // base slack Tier limits.  The resulting
 // events per minute will be calculated like this:
 //
-//   events_per_sec =  (<slack_tier_epm> + <eventsPerMin>) / 60.0
+//	events_per_sec =  (<slack_tier_epm> + <eventsPerMin>) / 60.0
 func Tier3Boost(eventsPerMin uint) Option {
 	return func(options *Options) {
 		options.Tier3Boost = eventsPerMin
@@ -104,7 +110,7 @@ func Tier3Burst(eventsPerSec uint) Option {
 // base slack Tier limits.  The resulting
 // events per minute will be calculated like this:
 //
-//   events_per_sec =  (<slack_tier_epm> + <eventsPerMin>) / 60.0
+//	events_per_sec =  (<slack_tier_epm> + <eventsPerMin>) / 60.0
 func Tier2Boost(eventsPerMin uint) Option {
 	return func(options *Options) {
 		options.Tier2Boost = eventsPerMin

slackdump.go

@@ -53,6 +53,7 @@ type clienter interface {
 	GetTeamInfo() (*slack.TeamInfo, error)
 	GetUsersContext(ctx context.Context, options ...slack.GetUsersOption) ([]slack.User, error)
 	GetEmojiContext(ctx context.Context) (map[string]string, error)
+	GetUsersInConversationContext(ctx context.Context, params *slack.GetUsersInConversationParameters) ([]string, string, error)
 }
 
 var (

slackdump_test.go

@@ -163,18 +163,19 @@ func Test_newLimiter(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			t.Parallel()
+			tst := t
+			tst.Parallel()
 
 			got := network.NewLimiter(tt.args.t, tt.args.burst, tt.args.boost)
 
-			assert.NoError(t, got.Wait(context.Background())) // prime
+			assert.NoError(tst, got.Wait(context.Background())) // prime
 
 			start := time.Now()
 			err := got.Wait(context.Background())
 			stop := time.Now()
 
-			assert.NoError(t, err)
-			assert.WithinDurationf(t, start.Add(tt.wantDelay), stop, 10*time.Millisecond, "delayed for: %s, expected: %s", stop.Sub(start), tt.wantDelay)
+			assert.NoError(tst, err)
+			assert.WithinDurationf(tst, start.Add(tt.wantDelay), stop, 10*time.Millisecond, "delayed for: %s, expected: %s", stop.Sub(start), tt.wantDelay)
 		})
 	}
 }
@@ -229,7 +230,6 @@ func TestSession_Me(t *testing.T) {
 		Users     types.Users
 		UserIndex structures.UserIndex
 		options   Options
-		cacheDir  string
 	}
 	tests := []struct {
 		name    string
@@ -290,7 +290,6 @@ func TestSession_l(t *testing.T) {
 		Users     types.Users
 		UserIndex structures.UserIndex
 		options   Options
-		cacheDir  string
 	}
 	tests := []struct {
 		name   string