From ce684e2473d57e5de686d07955e5c7178d98a385 Mon Sep 17 00:00:00 2001
From: marbar3778 <marbar3778@yahoo.com>
Date: Sat, 25 Mar 2023 12:32:28 +0100
Subject: [PATCH] add event core api to runtime

---
 runtime/events.go | 62 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 runtime/events.go

diff --git a/runtime/events.go b/runtime/events.go
new file mode 100644
index 000000000000..abd8eb548428
--- /dev/null
+++ b/runtime/events.go
@@ -0,0 +1,62 @@
+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 {
+	e.EventManagerI.EmitTypedEvent(event)
+	return nil
+}
+
+// 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 {
+	e.EventManagerI.EmitTypedEvent(event)
+
+	return nil
+}