[8.4](backport #1130) Remove the fleet reporter

CHANGELOG.next.asciidoc

@@ -113,6 +113,7 @@
 - Fix data duplication for standalone agent on Kubernetes using the default manifest {issue-beats}31512[31512] {pull}742[742]
 - Agent updates will clean up unneeded artifacts. {issue}693[693] {issue}694[694] {pull}752[752]
 - Fix a panic caused by a race condition when installing the Elastic Agent. {issues}806[806]
+- Remove fleet event reporter and events from checkin body. {issue}993[993]
 
 ==== New features
 

internal/pkg/agent/application/gateway/fleet/fleet_gateway.go

@@ -56,10 +56,6 @@ type agentInfo interface {
 	AgentID() string
 }
 
-type fleetReporter interface {
-	Events() ([]fleetapi.SerializableEvent, func())
-}
-
 type stateStore interface {
 	Add(fleetapi.Action)
 	AckToken() string
@@ -85,7 +81,6 @@ type fleetGateway struct {
 	backoff            backoff.Backoff
 	settings           *fleetGatewaySettings
 	agentInfo          agentInfo
-	reporter           fleetReporter
 	done               chan struct{}
 	wg                 sync.WaitGroup
 	acker              store.FleetAcker
@@ -104,7 +99,6 @@ func New(
 	agentInfo agentInfo,
 	client client.Sender,
 	d pipeline.Dispatcher,
-	r fleetReporter,
 	acker store.FleetAcker,
 	statusController status.Controller,
 	stateStore stateStore,
@@ -120,7 +114,6 @@ func New(
 		client,
 		d,
 		scheduler,
-		r,
 		acker,
 		statusController,
 		stateStore,
@@ -136,7 +129,6 @@ func newFleetGatewayWithScheduler(
 	client client.Sender,
 	d pipeline.Dispatcher,
 	scheduler scheduler.Scheduler,
-	r fleetReporter,
 	acker store.FleetAcker,
 	statusController status.Controller,
 	stateStore stateStore,
@@ -162,7 +154,6 @@ func newFleetGatewayWithScheduler(
 			settings.Backoff.Max,
 		),
 		done:             done,
-		reporter:         r,
 		acker:            acker,
 		statusReporter:   statusController.RegisterComponent("gateway"),
 		statusController: statusController,
@@ -323,9 +314,6 @@ func (f *fleetGateway) doExecute() (*fleetapi.CheckinResponse, error) {
 }
 
 func (f *fleetGateway) execute(ctx context.Context) (*fleetapi.CheckinResponse, error) {
-	// get events
-	ee, ack := f.reporter.Events()
-
 	ecsMeta, err := info.Metadata()
 	if err != nil {
 		f.log.Error(errors.New("failed to load metadata", err))
@@ -341,7 +329,6 @@ func (f *fleetGateway) execute(ctx context.Context) (*fleetapi.CheckinResponse,
 	cmd := fleetapi.NewCheckinCmd(f.agentInfo, f.client)
 	req := &fleetapi.CheckinRequest{
 		AckToken: ackToken,
-		Events:   ee,
 		Metadata: ecsMeta,
 		Status:   f.statusController.StatusString(),
 	}
@@ -374,8 +361,6 @@ func (f *fleetGateway) execute(ctx context.Context) (*fleetapi.CheckinResponse,
 		}
 	}
 
-	// ack events so they are dropped from queue
-	ack()
 	return resp, nil
 }
 

internal/pkg/agent/application/gateway/fleet/fleet_gateway_test.go

@@ -18,7 +18,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/pkg/errors"
 	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/require"
 
@@ -29,9 +28,6 @@ import (
 	"github.com/elastic/elastic-agent/internal/pkg/core/state"
 	"github.com/elastic/elastic-agent/internal/pkg/fleetapi"
 	noopacker "github.com/elastic/elastic-agent/internal/pkg/fleetapi/acker/noop"
-	repo "github.com/elastic/elastic-agent/internal/pkg/reporter"
-	fleetreporter "github.com/elastic/elastic-agent/internal/pkg/reporter/fleet"
-	fleetreporterConfig "github.com/elastic/elastic-agent/internal/pkg/reporter/fleet/config"
 	"github.com/elastic/elastic-agent/internal/pkg/scheduler"
 	"github.com/elastic/elastic-agent/internal/pkg/testutils"
 	"github.com/elastic/elastic-agent/pkg/core/logger"
@@ -137,7 +133,7 @@ func (m *mockQueue) Actions() []fleetapi.Action {
 	return args.Get(0).([]fleetapi.Action)
 }
 
-type withGatewayFunc func(*testing.T, gateway.FleetGateway, *testingClient, *testingDispatcher, *scheduler.Stepper, repo.Backend)
+type withGatewayFunc func(*testing.T, gateway.FleetGateway, *testingClient, *testingDispatcher, *scheduler.Stepper)
 
 func withGateway(agentInfo agentInfo, settings *fleetGatewaySettings, fn withGatewayFunc) func(t *testing.T) {
 	return func(t *testing.T) {
@@ -146,8 +142,6 @@ func withGateway(agentInfo agentInfo, settings *fleetGatewaySettings, fn withGat
 		dispatcher := newTestingDispatcher()
 
 		log, _ := logger.New("fleet_gateway", false)
-		rep := getReporter(agentInfo, log, t)
-
 		ctx, cancel := context.WithCancel(context.Background())
 		defer cancel()
 
@@ -167,7 +161,6 @@ func withGateway(agentInfo agentInfo, settings *fleetGatewaySettings, fn withGat
 			client,
 			dispatcher,
 			scheduler,
-			rep,
 			noopacker.NewAcker(),
 			&noopController{},
 			stateStore,
@@ -176,7 +169,7 @@ func withGateway(agentInfo agentInfo, settings *fleetGatewaySettings, fn withGat
 
 		require.NoError(t, err)
 
-		fn(t, gateway, client, dispatcher, scheduler, rep)
+		fn(t, gateway, client, dispatcher, scheduler)
 	}
 }
 
@@ -214,7 +207,6 @@ func TestFleetGateway(t *testing.T) {
 		client *testingClient,
 		dispatcher *testingDispatcher,
 		scheduler *scheduler.Stepper,
-		rep repo.Backend,
 	) {
 		waitFn := ackSeq(
 			client.Answer(func(headers http.Header, body io.Reader) (*http.Response, error) {
@@ -240,7 +232,6 @@ func TestFleetGateway(t *testing.T) {
 		client *testingClient,
 		dispatcher *testingDispatcher,
 		scheduler *scheduler.Stepper,
-		rep repo.Backend,
 	) {
 		waitFn := ackSeq(
 			client.Answer(func(headers http.Header, body io.Reader) (*http.Response, error) {
@@ -305,7 +296,6 @@ func TestFleetGateway(t *testing.T) {
 			client,
 			dispatcher,
 			scheduler,
-			getReporter(agentInfo, log, t),
 			noopacker.NewAcker(),
 			&noopController{},
 			stateStore,
@@ -366,7 +356,6 @@ func TestFleetGateway(t *testing.T) {
 			client,
 			dispatcher,
 			scheduler,
-			getReporter(agentInfo, log, t),
 			noopacker.NewAcker(),
 			&noopController{},
 			stateStore,
@@ -432,7 +421,6 @@ func TestFleetGateway(t *testing.T) {
 			client,
 			dispatcher,
 			scheduler,
-			getReporter(agentInfo, log, t),
 			noopacker.NewAcker(),
 			&noopController{},
 			stateStore,
@@ -487,7 +475,6 @@ func TestFleetGateway(t *testing.T) {
 			client,
 			dispatcher,
 			scheduler,
-			getReporter(agentInfo, log, t),
 			noopacker.NewAcker(),
 			&noopController{},
 			stateStore,
@@ -544,7 +531,6 @@ func TestFleetGateway(t *testing.T) {
 			client,
 			dispatcher,
 			scheduler,
-			getReporter(agentInfo, log, t),
 			noopacker.NewAcker(),
 			&noopController{},
 			stateStore,
@@ -594,9 +580,7 @@ func TestFleetGateway(t *testing.T) {
 		client *testingClient,
 		dispatcher *testingDispatcher,
 		scheduler *scheduler.Stepper,
-		rep repo.Backend,
 	) {
-		_ = rep.Report(context.Background(), &testStateEvent{})
 		waitFn := ackSeq(
 			client.Answer(func(headers http.Header, body io.Reader) (*http.Response, error) {
 				cr := &request{}
@@ -609,8 +593,6 @@ func TestFleetGateway(t *testing.T) {
 					t.Fatal(err)
 				}
 
-				require.Equal(t, 1, len(cr.Events))
-
 				resp := wrapStrToResp(http.StatusOK, `{ "actions": [] }`)
 				return resp, nil
 			}),
@@ -657,7 +639,6 @@ func TestFleetGateway(t *testing.T) {
 			client,
 			dispatcher,
 			scheduler,
-			getReporter(agentInfo, log, t),
 			noopacker.NewAcker(),
 			&noopController{},
 			stateStore,
@@ -712,8 +693,6 @@ func TestRetriesOnFailures(t *testing.T) {
 		client := newTestingClient()
 		dispatcher := newTestingDispatcher()
 		log, _ := logger.New("fleet_gateway", false)
-		rep := getReporter(agentInfo, log, t)
-
 		ctx, cancel := context.WithCancel(context.Background())
 		defer cancel()
 
@@ -742,7 +721,6 @@ func TestRetriesOnFailures(t *testing.T) {
 			client,
 			dispatcher,
 			scheduler,
-			rep,
 			noopacker.NewAcker(),
 			statusController,
 			stateStore,
@@ -757,8 +735,6 @@ func TestRetriesOnFailures(t *testing.T) {
 		err = gateway.Start()
 		require.NoError(t, err)
 
-		_ = rep.Report(context.Background(), &testStateEvent{})
-
 		// Initial tick is done out of bound so we can block on channels.
 		scheduler.Next()
 
@@ -780,8 +756,6 @@ func TestRetriesOnFailures(t *testing.T) {
 					t.Fatal(err)
 				}
 
-				require.Equal(t, 1, len(cr.Events))
-
 				resp := wrapStrToResp(http.StatusOK, `{ "actions": [] }`)
 				return resp, nil
 			}),
@@ -807,7 +781,6 @@ func TestRetriesOnFailures(t *testing.T) {
 			client *testingClient,
 			dispatcher *testingDispatcher,
 			scheduler *scheduler.Stepper,
-			rep repo.Backend,
 		) {
 			fail := func(_ http.Header, _ io.Reader) (*http.Response, error) {
 				return wrapStrToResp(http.StatusInternalServerError, "something is bad"), nil
@@ -816,8 +789,6 @@ func TestRetriesOnFailures(t *testing.T) {
 			err := gateway.Start()
 			require.NoError(t, err)
 
-			_ = rep.Report(context.Background(), &testStateEvent{})
-
 			// Initial tick is done out of bound so we can block on channels.
 			scheduler.Next()
 
@@ -830,27 +801,8 @@ func TestRetriesOnFailures(t *testing.T) {
 		}))
 }
 
-func getReporter(info agentInfo, log *logger.Logger, t *testing.T) *fleetreporter.Reporter {
-	fleetR, err := fleetreporter.NewReporter(info, log, fleetreporterConfig.DefaultConfig())
-	if err != nil {
-		t.Fatal(errors.Wrap(err, "fail to create reporters"))
-	}
-
-	return fleetR
-}
-
 type testAgentInfo struct{}
 
 func (testAgentInfo) AgentID() string { return "agent-secret" }
 
-type testStateEvent struct{}
-
-func (testStateEvent) Type() string                    { return repo.EventTypeState }
-func (testStateEvent) SubType() string                 { return repo.EventSubTypeInProgress }
-func (testStateEvent) Time() time.Time                 { return time.Unix(0, 1) }
-func (testStateEvent) Message() string                 { return "hello" }
-func (testStateEvent) Payload() map[string]interface{} { return map[string]interface{}{"key": 1} }
-
-type request struct {
-	Events []interface{} `json:"events"`
-}
+type request struct{}

internal/pkg/agent/application/managed_mode.go

@@ -44,7 +44,6 @@ import (
 	"github.com/elastic/elastic-agent/internal/pkg/fleetapi/client"
 	"github.com/elastic/elastic-agent/internal/pkg/queue"
 	reporting "github.com/elastic/elastic-agent/internal/pkg/reporter"
-	fleetreporter "github.com/elastic/elastic-agent/internal/pkg/reporter/fleet"
 	logreporter "github.com/elastic/elastic-agent/internal/pkg/reporter/log"
 	"github.com/elastic/elastic-agent/internal/pkg/sorted"
 	"github.com/elastic/elastic-agent/pkg/core/logger"
@@ -124,12 +123,7 @@ func newManaged(
 	}
 
 	logR := logreporter.NewReporter(log)
-	fleetR, err := fleetreporter.NewReporter(agentInfo, log, cfg.Fleet.Reporting)
-	if err != nil {
-		return nil, errors.New(err, "fail to create reporters")
-	}
-
-	combinedReporter := reporting.NewReporter(managedApplication.bgContext, log, agentInfo, logR, fleetR)
+	combinedReporter := reporting.NewReporter(managedApplication.bgContext, log, agentInfo, logR)
 	monitor, err := monitoring.NewMonitor(cfg.Settings)
 	if err != nil {
 		return nil, errors.New(err, "failed to initialize monitoring")
@@ -288,7 +282,6 @@ func newManaged(
 		agentInfo,
 		client,
 		actionDispatcher,
-		fleetR,
 		actionAcker,
 		statusCtrl,
 		stateStore,

internal/pkg/agent/configuration/fleet.go

@@ -7,18 +7,16 @@ package configuration
 import (
 	"github.com/elastic/elastic-agent/internal/pkg/agent/errors"
 	"github.com/elastic/elastic-agent/internal/pkg/remote"
-	fleetreporterConfig "github.com/elastic/elastic-agent/internal/pkg/reporter/fleet/config"
 )
 
 // FleetAgentConfig is the internal configuration of the agent after the enrollment is done,
 // this configuration is not exposed in anyway in the elastic-agent.yml and is only internal configuration.
 type FleetAgentConfig struct {
-	Enabled      bool                        `config:"enabled" yaml:"enabled"`
-	AccessAPIKey string                      `config:"access_api_key" yaml:"access_api_key"`
-	Client       remote.Config               `config:",inline" yaml:",inline"`
-	Reporting    *fleetreporterConfig.Config `config:"reporting" yaml:"reporting"`
-	Info         *AgentInfo                  `config:"agent" yaml:"agent"`
-	Server       *FleetServerConfig          `config:"server" yaml:"server,omitempty"`
+	Enabled      bool               `config:"enabled" yaml:"enabled"`
+	AccessAPIKey string             `config:"access_api_key" yaml:"access_api_key"`
+	Client       remote.Config      `config:",inline" yaml:",inline"`
+	Info         *AgentInfo         `config:"agent" yaml:"agent"`
+	Server       *FleetServerConfig `config:"server" yaml:"server,omitempty"`
 }
 
 // Valid validates the required fields for accessing the API.
@@ -44,9 +42,8 @@ func (e *FleetAgentConfig) Valid() error {
 // DefaultFleetAgentConfig creates a default configuration for fleet.
 func DefaultFleetAgentConfig() *FleetAgentConfig {
 	return &FleetAgentConfig{
-		Enabled:   false,
-		Client:    remote.DefaultClientConfig(),
-		Reporting: fleetreporterConfig.DefaultConfig(),
-		Info:      &AgentInfo{},
+		Enabled: false,
+		Client:  remote.DefaultClientConfig(),
+		Info:    &AgentInfo{},
 	}
 }

internal/pkg/fleetapi/checkin_cmd.go

@@ -22,10 +22,9 @@ const checkingPath = "/api/fleet/agents/%s/checkin"
 
 // CheckinRequest consists of multiple events reported to fleet ui.
 type CheckinRequest struct {
-	Status   string              `json:"status"`
-	AckToken string              `json:"ack_token,omitempty"`
-	Events   []SerializableEvent `json:"events"`
-	Metadata *info.ECSMeta       `json:"local_metadata,omitempty"`
+	Status   string        `json:"status"`
+	AckToken string        `json:"ack_token,omitempty"`
+	Metadata *info.ECSMeta `json:"local_metadata,omitempty"`
 }
 
 // SerializableEvent is a representation of the event to be send to the Fleet Server API via the checkin