feat: add event core api to runtime

CHANGELOG.md

@@ -60,6 +60,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/groups) [#14879](https://github.com/cosmos/cosmos-sdk/pull/14879) Add `Query/Groups` query to get all the groups.
 * (x/genutil,cli) [#15147](https://github.com/cosmos/cosmos-sdk/pull/15147) Add `--initial-height` flag to cli init cmd to provide `genesis.json` with user defined initial block height
 * (x/gov) [#15151](https://github.com/cosmos/cosmos-sdk/pull/15151) Add `burn_vote_quorum`, `burn_proposal_deposit_prevote` and `burn_vote_veto` params to allow applications to decide if they would like to burn deposits
+* (runtime) [#15547](https://github.com/cosmos/cosmos-sdk/pull/15547) Add eventService
 
 ### Improvements
 

runtime/events.go

@@ -0,0 +1,60 @@
+package runtime
+
+import (
+	"context"
+
+	"cosmossdk.io/core/event"
+	"google.golang.org/protobuf/runtime/protoiface"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+var _ event.Service = (*EventService)(nil)
+
+type EventService struct {
+	Events
+}
+
+func (es EventService) EventManager(ctx context.Context) event.Manager {
+	sdkCtx := sdk.UnwrapSDKContext(ctx)
+	return &Events{sdkCtx.EventManager()}
+}
+
+var _ event.Manager = (*Events)(nil)
+
+type Events struct {
+	sdk.EventManagerI
+}
+
+func NewEventManager(ctx context.Context) event.Manager {
+	sdkCtx := sdk.UnwrapSDKContext(ctx)
+	return &Events{sdkCtx.EventManager()}
+}
+
+// Emit emits an typed event that is defined in the protobuf file.
+// In the future these events will be added to consensus
+func (e Events) Emit(ctx context.Context, event protoiface.MessageV1) error {
+	return e.EventManagerI.EmitTypedEvent(event)
+}
+
+// EmitKV emits a key value pair event
+func (e Events) EmitKV(ctx context.Context, eventType string, attrs ...event.Attribute) error {
+	attributes := make([]sdk.Attribute, 0, len(attrs))
+
+	for _, attr := range attrs {
+		attributes = append(attributes, sdk.NewAttribute(attr.Key, attr.Value))
+	}
+
+	events := sdk.Events{
+		sdk.NewEvent(eventType, attributes...),
+	}
+	e.EventManagerI.EmitEvents(events)
+	return nil
+}
+
+// Emit emits an typed event that is defined in the protobuf file.
+// In the future these events will be added to consensus
+func (e Events) EmitNonConsensus(ctx context.Context, event protoiface.MessageV1) error {
+
+	return e.EventManagerI.EmitTypedEvent(event)
+}