Add drift, use own proto def

Procfile

@@ -1,5 +1,5 @@
 a1: ./alertmanager --log.level=debug --storage.path=$TMPDIR/a1 --web.listen-address=:9093  --cluster.listen-address=127.0.0.1:8001 --config.file=examples/ha/alertmanager.yml --cluster.peer-timeout=5s
 a2: ./alertmanager --log.level=debug --storage.path=$TMPDIR/a2 --web.listen-address=:9094  --cluster.listen-address=127.0.0.1:8002 --cluster.peer=127.0.0.1:8001 --config.file=examples/ha/alertmanager.yml --cluster.peer-timeout=5s
-a3: ./alertmanager --log.level=debug --storage.path=$TMPDIR/a3 --web.listen-address=:9095  --cluster.listen-address=127.0.0.1:8003 --cluster.peer=127.0.0.1:8001 --config.file=examples/ha/alertmanager.yml --cluster.peer-timeout=5s
+a3: ./alertmanager --log.level=debug --storage.path=$TMPDIR/a3 --web.listen-address=:9095  --cluster.listen-address=127.0.0.1:8003 --cluster.peer=127.0.0.1:8001 --config.file=examples/ha/alertmanager.yml --cluster.peer-timeout=5s --cluster.drift=5s
 wh: go run ./examples/webhook/echo.go
 

cmd/alertmanager/main.go

@@ -158,6 +158,8 @@ func main() {
 		gossipInterval       = kingpin.Flag("cluster.gossip-interval", "Interval between sending gossip messages. By lowering this value (more frequent) gossip messages are propagated across the cluster more quickly at the expense of increased bandwidth.").Default(cluster.DefaultGossipInterval.String()).Duration()
 		pushPullInterval     = kingpin.Flag("cluster.pushpull-interval", "Interval for gossip state syncs. Setting this interval lower (more frequent) will increase convergence speeds across larger clusters at the expense of increased bandwidth usage.").Default(cluster.DefaultPushPullInterval.String()).Duration()
 		settleTimeout        = kingpin.Flag("cluster.settle-timeout", "Maximum time to wait for cluster connections to settle before evaluating notifications.").Default(cluster.DefaultPushPullInterval.String()).Duration()
+		triggerCooldown      = kingpin.Flag("cluster.synchronize-cooldown", "After a alert pipeline has been triggered, how long to wait before allowing peers to trigger the pipeline again.").Default("5s").Duration()
+		pipelineDrift        = kingpin.Flag("cluster.drift", "Interval to be added to pipeline execution after each execution. Accumulative.").Default("0s").Duration()
 	)
 
 	kingpin.Version(version.Print("alertmanager"))
@@ -240,7 +242,11 @@ func main() {
 		silences.SetBroadcast(c.Broadcast)
 	}
 
-	triggers := trigger.New()
+	var peerID string
+	if peer != nil {
+		peerID = peer.Name()
+	}
+	triggers := trigger.New(peerID)
 	if peer != nil {
 		c := peer.AddState("trigger", triggers)
 		triggers.SetBroadcast(c.Broadcast)
@@ -355,6 +361,8 @@ func main() {
 			marker,
 			timeoutFunc,
 			triggers,
+			*triggerCooldown,
+			*pipelineDrift,
 			logger,
 		)
 

dispatch/dispatch.go

@@ -25,6 +25,9 @@ type Dispatcher struct {
 	alerts   provider.Alerts
 	stage    notify.Stage
 	triggers *trigger.Trigger
+	cooldown time.Duration
+	// For testing. Accumulates drift in pipeline execution scheduling.
+	drift time.Duration
 
 	marker  types.Marker
 	timeout func(time.Duration) time.Duration
@@ -47,6 +50,8 @@ func NewDispatcher(
 	mk types.Marker,
 	to func(time.Duration) time.Duration,
 	triggers *trigger.Trigger,
+	cooldown time.Duration,
+	drift time.Duration,
 	l log.Logger,
 ) *Dispatcher {
 	disp := &Dispatcher{
@@ -56,6 +61,8 @@ func NewDispatcher(
 		marker:   mk,
 		timeout:  to,
 		triggers: triggers,
+		cooldown: cooldown,
+		drift:    drift,
 		logger:   log.With(l, "component", "dispatcher"),
 	}
 	return disp
@@ -261,7 +268,7 @@ func (d *Dispatcher) processAlert(alert *types.Alert, route *Route) {
 	// If the group does not exist, create it.
 	ag, ok := group[fp]
 	if !ok {
-		ag = newAggrGroup(d.ctx, groupLabels, route, d.timeout, d.triggers, d.logger)
+		ag = newAggrGroup(d.ctx, groupLabels, route, d.timeout, d.triggers, d.cooldown, d.logger)
 		group[fp] = ag
 
 		go ag.run(func(ctx context.Context, alerts ...*types.Alert) bool {
@@ -270,7 +277,7 @@ func (d *Dispatcher) processAlert(alert *types.Alert, route *Route) {
 				level.Error(d.logger).Log("msg", "Notify for alerts failed", "num_alerts", len(alerts), "err", err)
 			}
 			return err == nil
-		})
+		}, d.drift)
 	}
 
 	ag.insert(alert)
@@ -291,6 +298,7 @@ type aggrGroup struct {
 	next     *time.Timer
 	timeout  func(time.Duration) time.Duration
 	triggers *trigger.Trigger
+	cooldown time.Duration
 
 	mtx        sync.RWMutex
 	alerts     map[model.Fingerprint]*types.Alert
@@ -305,6 +313,7 @@ func newAggrGroup(
 	r *Route,
 	to func(time.Duration) time.Duration,
 	triggers *trigger.Trigger,
+	cooldown time.Duration,
 	logger log.Logger,
 ) *aggrGroup {
 	if to == nil {
@@ -315,6 +324,7 @@ func newAggrGroup(
 		routeKey: r.Key(),
 		opts:     &r.RouteOpts,
 		triggers: triggers,
+		cooldown: cooldown,
 		timeout:  to,
 		alerts:   map[model.Fingerprint]*types.Alert{},
 	}
@@ -352,7 +362,7 @@ func (ag *aggrGroup) alertSlice() []*types.Alert {
 	return alerts
 }
 
-func (ag *aggrGroup) run(nf notifyFunc) {
+func (ag *aggrGroup) run(nf notifyFunc, drift time.Duration) {
 	ag.done = make(chan struct{})
 	// fp is the labels causing this grouping.
 	fp := ag.fingerprint()
@@ -412,13 +422,18 @@ func (ag *aggrGroup) run(nf notifyFunc) {
 
 			// Wait the configured interval before calling flush again.
 			ag.mtx.Lock()
+
+			if drift != 0 {
+				ag.opts.GroupInterval += drift
+				level.Info(ag.logger).Log("msg", "trigger", "action", "drift", "group_interval", ag.opts.GroupInterval)
+			}
 			ag.next.Reset(ag.opts.GroupInterval)
 			ag.hasFlushed = true
 			ag.mtx.Unlock()
 
 			go func() {
-				// TODO: How long is the cooldown?
+				// TODO: Set cooldown via commandline option.
-				time.Sleep(5 * time.Second)
+				time.Sleep(ag.cooldown)
 
 				ag.mtx.Lock()
 				ag.triggered = false

notify/notify.go

@@ -439,11 +439,14 @@ func NewWaitStage(wait func() time.Duration) *WaitStage {
 
 // Exec implements the Stage interface.
 func (ws *WaitStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error) {
+	now := time.Now()
 	select {
 	// TODO: We need to listen here for updates on the mesh, and filter
 	// alerts that have already been sent.
 	case <-time.After(ws.wait()):
+		level.Info(l).Log("msg", "trigger", "action", "wait_stage passed", "duration", time.Since(now))
 	case <-ctx.Done():
+		level.Info(l).Log("msg", "trigger", "action", "wait_stage canceled", "duration", time.Since(now))
 		return ctx, nil, ctx.Err()
 	}
 	return ctx, alerts, nil
@@ -644,6 +647,7 @@ func (r RetryStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Ale
 		select {
 		case <-tick.C:
 			now := time.Now()
+			level.Info(l).Log("msg", "trigger", "action", "sending")
 			retry, err := r.integration.Notify(ctx, alerts...)
 			notificationLatencySeconds.WithLabelValues(r.integration.name).Observe(time.Since(now).Seconds())
 			if err != nil {

provider/provider.go

@@ -16,7 +16,7 @@ package provider
 import (
 	"fmt"
 
-	pb "github.com/prometheus/alertmanager/nflog/nflogpb"
+	pb "github.com/prometheus/alertmanager/trigger/triggerpb"
 	"github.com/prometheus/alertmanager/types"
 	"github.com/prometheus/common/model"
 )
@@ -56,7 +56,7 @@ type TriggerIterator interface {
 	// exhausted. It is not necessary to exhaust the iterator but Close must
 	// be called in any case to release resources used by the iterator (even
 	// if the iterator is exhausted).
-	Next() <-chan *pb.MeshEntry
+	Next() <-chan *pb.Trigger
 }
 
 // NewAlertIterator returns a new AlertIterator based on the generic alertIterator type

scripts/genproto.sh

@@ -23,7 +23,7 @@ GOGOPROTO_ROOT="${GOPATH}/src/github.com/gogo/protobuf"
 GOGOPROTO_PATH="${GOGOPROTO_ROOT}:${GOGOPROTO_ROOT}/protobuf"
 GRPC_GATEWAY_ROOT="${GOPATH}/src/github.com/grpc-ecosystem/grpc-gateway"
 
-DIRS="nflog/nflogpb silence/silencepb cluster/clusterpb"
+DIRS="nflog/nflogpb silence/silencepb cluster/clusterpb trigger/triggerpb"
 
 for dir in ${DIRS}; do
 	pushd ${dir}

trigger/trigger.go

@@ -10,8 +10,8 @@ import (
 
 	"github.com/matttproud/golang_protobuf_extensions/pbutil"
 	"github.com/prometheus/alertmanager/nflog"
-	pb "github.com/prometheus/alertmanager/nflog/nflogpb"
 	"github.com/prometheus/alertmanager/provider"
+	pb "github.com/prometheus/alertmanager/trigger/triggerpb"
 	"github.com/prometheus/common/model"
 )
 
@@ -23,17 +23,19 @@ import (
 type Trigger struct {
 	st          state
 	now         func() time.Time
-	subscribers map[model.Fingerprint]chan *pb.MeshEntry
+	subscribers map[model.Fingerprint]chan *pb.Trigger
 	broadcast   func([]byte)
+	peerID      string
 
 	sync.Mutex
 }
 
-func New() *Trigger {
+func New(peerID string) *Trigger {
 	return &Trigger{
+		peerID:      peerID,
 		st:          state{},
 		now:         utcNow,
-		subscribers: make(map[model.Fingerprint]chan *pb.MeshEntry),
+		subscribers: make(map[model.Fingerprint]chan *pb.Trigger),
 		broadcast:   func(_ []byte) {},
 	}
 }
@@ -69,13 +71,13 @@ func (t *Trigger) Merge(b []byte) error {
 		// TODO: Is there a purpose in storing these? I think we just
 		// want to send a message and then move on with our lives.
 		// t.st.merge(e)
-		fp, err := model.FingerprintFromString(string(e.Entry.GroupKey))
+		fp, err := model.FingerprintFromString(e.Fingerprint)
 		if err != nil {
-			return fmt.Errorf("failed to parse groupkey to fingerprint %v", err)
+			return fmt.Errorf("failed to parse fingerprint: %v", err)
 		}
 		s, ok := t.subscribers[fp]
 		if !ok {
-			return fmt.Errorf("subscriber for %s does not exist", string(e.Entry.GroupKey))
+			return fmt.Errorf("subscriber for %s does not exist", e.Fingerprint)
 		}
 		s <- e
 	}
@@ -90,18 +92,13 @@ func (t *Trigger) Trigger(fp model.Fingerprint) error {
 	t.Lock()
 	defer t.Unlock()
 
-	e := &pb.MeshEntry{
+	e := &pb.Trigger{
-		Entry: &pb.Entry{
+		Fingerprint: fp.String(),
-			Receiver:       nil,
+		PeerId:      t.peerID,
-			GroupKey:       []byte(fp.String()),
+		Timestamp:   now,
-			Timestamp:      now,
-			FiringAlerts:   nil,
-			ResolvedAlerts: nil,
-		},
-		ExpiresAt: now,
 	}
 
-	b, err := marshalMeshEntry(e)
+	b, err := marshalTrigger(e)
 	if err != nil {
 		return err
 	}
@@ -110,7 +107,7 @@ func (t *Trigger) Trigger(fp model.Fingerprint) error {
 	return nil
 }
 
-func marshalMeshEntry(e *pb.MeshEntry) ([]byte, error) {
+func marshalTrigger(e *pb.Trigger) ([]byte, error) {
 	var buf bytes.Buffer
 	if _, err := pbutil.WriteDelimited(&buf, e); err != nil {
 		return nil, err
@@ -128,7 +125,7 @@ func (t *Trigger) SetBroadcast(f func([]byte)) {
 // Subscribe returns a channel indicating incoming triggers.
 func (t *Trigger) Subscribe(fp model.Fingerprint) provider.TriggerIterator {
 	var (
-		ch          = make(chan *pb.MeshEntry)
+		ch          = make(chan *pb.Trigger)
 		ctx, cancel = context.WithCancel(context.Background())
 	)
 
@@ -154,12 +151,12 @@ func (t *Trigger) Subscribe(fp model.Fingerprint) provider.TriggerIterator {
 // triggerListener alerts subscribers of a particular labelset when a new
 // message arrives.
 type triggerIterator struct {
-	ch     chan *pb.MeshEntry
+	ch     chan *pb.Trigger
 	cancel context.CancelFunc
 }
 
 // Next implements the TriggerIterator interface.
-func (t *triggerIterator) Next() <-chan *pb.MeshEntry {
+func (t *triggerIterator) Next() <-chan *pb.Trigger {
 	return t.ch
 }
 
@@ -174,28 +171,23 @@ func (t *triggerIterator) Close() {
 }
 
 // String is the label fingerprint. Can probably make this "typesafe" later.
-type state map[string]*pb.MeshEntry
+type state map[string]*pb.Trigger
 
-func (s state) merge(e *pb.MeshEntry) {
+func (s state) merge(e *pb.Trigger) {
-	k := string(e.Entry.GroupKey)
+	s[e.Fingerprint] = e
-
-	prev, ok := s[k]
-	if !ok || prev.Entry.Timestamp.Before(e.Entry.Timestamp) {
-		s[k] = e
-	}
 }
 
 func decodeState(r io.Reader) (state, error) {
 	t := state{}
 	for {
-		var e pb.MeshEntry
+		var e pb.Trigger
 		_, err := pbutil.ReadDelimited(r, &e)
 		if err == nil {
-			if e.Entry == nil {
+			if e.Fingerprint == "" {
 				return nil, nflog.ErrInvalidState
 			}
 			// Create own protobuf def, use fingerprint instead of groupkey
-			t[string(e.Entry.GroupKey)] = &e
+			t[e.Fingerprint] = &e
 			continue
 		}
 		if err == io.EOF {

trigger/triggerpb/trigger.pb.go

@@ -0,0 +1,392 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: trigger.proto
+
+/*
+	Package triggerpb is a generated protocol buffer package.
+
+	It is generated from these files:
+		trigger.proto
+
+	It has these top-level messages:
+		Trigger
+*/
+package triggerpb
+
+import proto "github.com/gogo/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+import _ "github.com/gogo/protobuf/gogoproto"
+
+import time "time"
+
+import types "github.com/gogo/protobuf/types"
+
+import io "io"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+var _ = time.Kitchen
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion2 // please upgrade the proto package
+
+type Trigger struct {
+	// The fingerprint of the pipeline that started execution.
+	Fingerprint string `protobuf:"bytes,1,opt,name=fingerprint,proto3" json:"fingerprint,omitempty"`
+	// The peer sending the message.
+	PeerId string `protobuf:"bytes,2,opt,name=peer_id,json=peerId,proto3" json:"peer_id,omitempty"`
+	// Timestamp for message.
+	Timestamp time.Time `protobuf:"bytes,3,opt,name=timestamp,stdtime" json:"timestamp"`
+}
+
+func (m *Trigger) Reset()                    { *m = Trigger{} }
+func (m *Trigger) String() string            { return proto.CompactTextString(m) }
+func (*Trigger) ProtoMessage()               {}
+func (*Trigger) Descriptor() ([]byte, []int) { return fileDescriptorTrigger, []int{0} }
+
+func init() {
+	proto.RegisterType((*Trigger)(nil), "triggerpb.Trigger")
+}
+func (m *Trigger) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *Trigger) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	if len(m.Fingerprint) > 0 {
+		dAtA[i] = 0xa
+		i++
+		i = encodeVarintTrigger(dAtA, i, uint64(len(m.Fingerprint)))
+		i += copy(dAtA[i:], m.Fingerprint)
+	}
+	if len(m.PeerId) > 0 {
+		dAtA[i] = 0x12
+		i++
+		i = encodeVarintTrigger(dAtA, i, uint64(len(m.PeerId)))
+		i += copy(dAtA[i:], m.PeerId)
+	}
+	dAtA[i] = 0x1a
+	i++
+	i = encodeVarintTrigger(dAtA, i, uint64(types.SizeOfStdTime(m.Timestamp)))
+	n1, err := types.StdTimeMarshalTo(m.Timestamp, dAtA[i:])
+	if err != nil {
+		return 0, err
+	}
+	i += n1
+	return i, nil
+}
+
+func encodeVarintTrigger(dAtA []byte, offset int, v uint64) int {
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return offset + 1
+}
+func (m *Trigger) Size() (n int) {
+	var l int
+	_ = l
+	l = len(m.Fingerprint)
+	if l > 0 {
+		n += 1 + l + sovTrigger(uint64(l))
+	}
+	l = len(m.PeerId)
+	if l > 0 {
+		n += 1 + l + sovTrigger(uint64(l))
+	}
+	l = types.SizeOfStdTime(m.Timestamp)
+	n += 1 + l + sovTrigger(uint64(l))
+	return n
+}
+
+func sovTrigger(x uint64) (n int) {
+	for {
+		n++
+		x >>= 7
+		if x == 0 {
+			break
+		}
+	}
+	return n
+}
+func sozTrigger(x uint64) (n int) {
+	return sovTrigger(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *Trigger) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTrigger
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: Trigger: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: Trigger: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Fingerprint", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTrigger
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTrigger
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Fingerprint = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field PeerId", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTrigger
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTrigger
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.PeerId = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Timestamp", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTrigger
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTrigger
+			}
+			postIndex := iNdEx + msglen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := types.StdTimeUnmarshal(&m.Timestamp, dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTrigger(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthTrigger
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipTrigger(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowTrigger
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowTrigger
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+			return iNdEx, nil
+		case 1:
+			iNdEx += 8
+			return iNdEx, nil
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowTrigger
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			iNdEx += length
+			if length < 0 {
+				return 0, ErrInvalidLengthTrigger
+			}
+			return iNdEx, nil
+		case 3:
+			for {
+				var innerWire uint64
+				var start int = iNdEx
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return 0, ErrIntOverflowTrigger
+					}
+					if iNdEx >= l {
+						return 0, io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					innerWire |= (uint64(b) & 0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				innerWireType := int(innerWire & 0x7)
+				if innerWireType == 4 {
+					break
+				}
+				next, err := skipTrigger(dAtA[start:])
+				if err != nil {
+					return 0, err
+				}
+				iNdEx = start + next
+			}
+			return iNdEx, nil
+		case 4:
+			return iNdEx, nil
+		case 5:
+			iNdEx += 4
+			return iNdEx, nil
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+	}
+	panic("unreachable")
+}
+
+var (
+	ErrInvalidLengthTrigger = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowTrigger   = fmt.Errorf("proto: integer overflow")
+)
+
+func init() { proto.RegisterFile("trigger.proto", fileDescriptorTrigger) }
+
+var fileDescriptorTrigger = []byte{
+	// 195 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xe2, 0x2d, 0x29, 0xca, 0x4c,
+	0x4f, 0x4f, 0x2d, 0xd2, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x84, 0x72, 0x0b, 0x92, 0xa4,
+	0xe4, 0xd3, 0xf3, 0xf3, 0xd3, 0x73, 0x52, 0xf5, 0xc1, 0x12, 0x49, 0xa5, 0x69, 0xfa, 0x25, 0x99,
+	0xb9, 0xa9, 0xc5, 0x25, 0x89, 0xb9, 0x05, 0x10, 0xb5, 0x52, 0x22, 0xe9, 0xf9, 0xe9, 0xf9, 0x60,
+	0xa6, 0x3e, 0x88, 0x05, 0x11, 0x55, 0xea, 0x60, 0xe4, 0x62, 0x0f, 0x81, 0x18, 0x22, 0xa4, 0xc0,
+	0xc5, 0x9d, 0x96, 0x99, 0x07, 0x32, 0xae, 0x28, 0x33, 0xaf, 0x44, 0x82, 0x51, 0x81, 0x51, 0x83,
+	0x33, 0x08, 0x59, 0x48, 0x48, 0x9c, 0x8b, 0xbd, 0x20, 0x35, 0xb5, 0x28, 0x3e, 0x33, 0x45, 0x82,
+	0x09, 0x2c, 0xcb, 0x06, 0xe2, 0x7a, 0xa6, 0x08, 0x39, 0x71, 0x71, 0xc2, 0xed, 0x93, 0x60, 0x56,
+	0x60, 0xd4, 0xe0, 0x36, 0x92, 0xd2, 0x83, 0xb8, 0x48, 0x0f, 0xe6, 0x22, 0xbd, 0x10, 0x98, 0x0a,
+	0x27, 0x8e, 0x13, 0xf7, 0xe4, 0x19, 0x26, 0xdc, 0x97, 0x67, 0x0c, 0x42, 0x68, 0x73, 0x12, 0x38,
+	0xf1, 0x50, 0x8e, 0xe1, 0xc4, 0x23, 0x39, 0xc6, 0x0b, 0x8f, 0xe4, 0x18, 0x1f, 0x3c, 0x92, 0x63,
+	0x4c, 0x62, 0x03, 0x6b, 0x35, 0x06, 0x04, 0x00, 0x00, 0xff, 0xff, 0x72, 0x58, 0x01, 0x59, 0xf6,
+	0x00, 0x00, 0x00,
+}

trigger/triggerpb/trigger.proto

@@ -0,0 +1,21 @@
+syntax = "proto3";
+
+package triggerpb;
+
+import "google/protobuf/timestamp.proto";
+import "gogoproto/gogo.proto";
+
+option (gogoproto.marshaler_all) = true;
+option (gogoproto.sizer_all) = true;
+option (gogoproto.unmarshaler_all) = true;
+option (gogoproto.goproto_getters_all) = false;
+
+message Trigger {
+  // The fingerprint of the pipeline that started execution.
+  string fingerprint = 1;
+  // The peer sending the message.
+  string peer_id = 2;
+
+  // Timestamp for message.
+  google.protobuf.Timestamp timestamp = 3 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+}