From 46cf15f03ca9286cb99427b8533250651e39b090 Mon Sep 17 00:00:00 2001
From: Pavel Karpy <carpawell@nspcc.ru>
Date: Thu, 17 Feb 2022 15:42:32 +0300
Subject: [PATCH] [#1183] node/config: Add notification configuration

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
---
 cmd/neofs-node/config/node/config.go      | 31 +++++++++++++++++++++++
 cmd/neofs-node/config/node/config_test.go |  8 ++++++
 config/example/node.env                   |  2 ++
 config/example/node.json                  |  4 +++
 config/example/node.yaml                  |  3 +++
 5 files changed, 48 insertions(+)

diff --git a/cmd/neofs-node/config/node/config.go b/cmd/neofs-node/config/node/config.go
index adabeb162..2a3b94aa4 100644
--- a/cmd/neofs-node/config/node/config.go
+++ b/cmd/neofs-node/config/node/config.go
@@ -17,9 +17,16 @@ type PersistentStateConfig struct {
 	cfg *config.Config
 }
 
+// NotificationConfig is a wrapper over "notification" config section
+// which provides access to object notification configuration of node.
+type NotificationConfig struct {
+	cfg *config.Config
+}
+
 const (
 	subsection                = "node"
 	persistentStateSubsection = "persistent_state"
+	notificationSubsection    = "notification"
 
 	attributePrefix = "attribute"
 
@@ -172,3 +179,27 @@ func (x SubnetConfig) IterateSubnets(f func(string)) {
 		f(ids[i])
 	}
 }
+
+// Notification returns structure that provides access to "notification"
+// subsection of "node" section.
+func Notification(c *config.Config) NotificationConfig {
+	return NotificationConfig{
+		c.Sub(subsection).Sub(notificationSubsection),
+	}
+}
+
+// Enabled returns value of "enabled" config parameter from "notification"
+// subsection of "node" section.
+//
+// Returns false if value is not presented.
+func (n NotificationConfig) Enabled() bool {
+	return config.BoolSafe(n.cfg, "enabled")
+}
+
+// DefaultTopic returns value of "default_topic" config parameter from
+// "notification" subsection of "node" section.
+//
+// Returns empty string if value is not presented.
+func (n NotificationConfig) DefaultTopic() string {
+	return config.StringSafe(n.cfg, "default_topic")
+}
diff --git a/cmd/neofs-node/config/node/config_test.go b/cmd/neofs-node/config/node/config_test.go
index 827b57a79..7b97ed5f2 100644
--- a/cmd/neofs-node/config/node/config_test.go
+++ b/cmd/neofs-node/config/node/config_test.go
@@ -31,10 +31,14 @@ func TestNodeSection(t *testing.T) {
 		attribute := Attributes(empty)
 		relay := Relay(empty)
 		persistatePath := PersistentState(empty).Path()
+		notificationEnabled := Notification(empty).Enabled()
+		notificationDefaultTopic := Notification(empty).DefaultTopic()
 
 		require.Empty(t, attribute)
 		require.Equal(t, false, relay)
 		require.Equal(t, PersistentStatePathDefault, persistatePath)
+		require.Equal(t, false, notificationEnabled)
+		require.Equal(t, "", notificationDefaultTopic)
 
 		var subnetCfg SubnetConfig
 
@@ -60,6 +64,8 @@ func TestNodeSection(t *testing.T) {
 		relay := Relay(c)
 		wKey := Wallet(c)
 		persistatePath := PersistentState(c).Path()
+		notificationEnabled := Notification(c).Enabled()
+		notificationDefaultTopic := Notification(c).DefaultTopic()
 
 		expectedAddr := []struct {
 			str  string
@@ -113,6 +119,8 @@ func TestNodeSection(t *testing.T) {
 			address.Uint160ToString(wKey.GetScriptHash()))
 
 		require.Equal(t, "/state", persistatePath)
+		require.Equal(t, true, notificationEnabled)
+		require.Equal(t, "topic", notificationDefaultTopic)
 
 		var subnetCfg SubnetConfig
 
diff --git a/config/example/node.env b/config/example/node.env
index 6eb0b1035..fc0e94dfb 100644
--- a/config/example/node.env
+++ b/config/example/node.env
@@ -18,6 +18,8 @@ NEOFS_NODE_RELAY=true
 NEOFS_NODE_PERSISTENT_STATE_PATH=/state
 NEOFS_NODE_SUBNET_EXIT_ZERO=true
 NEOFS_NODE_SUBNET_ENTRIES=123 456 789
+NEOFS_NODE_NOTIFICATION_ENABLED=true
+NEOFS_NODE_NOTIFICATION_DEFAULT_TOPIC=topic
 
 # gRPC section
 NEOFS_GRPC_NUM=2
diff --git a/config/example/node.json b/config/example/node.json
index 4a49cddd9..a2df17529 100644
--- a/config/example/node.json
+++ b/config/example/node.json
@@ -36,6 +36,10 @@
         "456",
         "789"
       ]
+    },
+    "notification": {
+      "enabled": true,
+      "default_topic": "topic"
     }
   },
   "grpc": {
diff --git a/config/example/node.yaml b/config/example/node.yaml
index 48820481d..7998700a5 100644
--- a/config/example/node.yaml
+++ b/config/example/node.yaml
@@ -31,6 +31,9 @@ node:
       - 123
       - 456
       - 789
+  notification:
+    enabled: true
+    default_topic: "topic"
 
 grpc:
   num: 2  # total number of listener endpoints