[#1422] config: Add multinet config

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-node/config/multinet/config.go

@@ -0,0 +1,42 @@
+package multinet
+
+import (
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+)
+
+const (
+	subsection = "multinet"
+
+	FallbackDelayDefault = 300 * time.Millisecond
+)
+
+// Enabled returns the  value of "enabled" config parameter from "multinet" section.
+func Enabled(c *config.Config) bool {
+	return config.BoolSafe(c.Sub(subsection), "enabled")
+}
+
+// Subnets returns the  value of "subnets" config parameter from "multinet" section.
+func Subnets(c *config.Config) []string {
+	return config.StringSliceSafe(c.Sub(subsection), "subnets")
+}
+
+// Balancer returns the  value of "balancer" config parameter from "multinet" section.
+func Balancer(c *config.Config) string {
+	return config.StringSafe(c.Sub(subsection), "balancer")
+}
+
+// Restrict returns the  value of "restrict" config parameter from "multinet" section.
+func Restrict(c *config.Config) bool {
+	return config.BoolSafe(c.Sub(subsection), "restrict")
+}
+
+// FallbackDelay returns the  value of "fallback_delay" config parameter from "multinet" section.
+func FallbackDelay(c *config.Config) time.Duration {
+	fd := config.DurationSafe(c.Sub(subsection), "fallback_delay")
+	if fd != 0 { // negative value means no fallback
+		return fd
+	}
+	return FallbackDelayDefault
+}

cmd/frostfs-node/config/multinet/config_test.go

@@ -0,0 +1,40 @@
+package multinet
+
+import (
+	"testing"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	configtest "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMultinetSection(t *testing.T) {
+	t.Run("defaults", func(t *testing.T) {
+		empty := configtest.EmptyConfig()
+		require.Equal(t, false, Enabled(empty))
+		require.Equal(t, ([]string)(nil), Subnets(empty))
+		require.Equal(t, "", Balancer(empty))
+		require.Equal(t, false, Restrict(empty))
+		require.Equal(t, FallbackDelayDefault, FallbackDelay(empty))
+	})
+
+	const path = "../../../../config/example/node"
+
+	fileConfigTest := func(c *config.Config) {
+		require.Equal(t, true, Enabled(c))
+		require.Equal(t, []string{
+			"192.168.219.174/24",
+			"10.78.70.74/23",
+		}, Subnets(c))
+		require.Equal(t, "roundrobin", Balancer(c))
+		require.Equal(t, false, Restrict(c))
+		require.Equal(t, 350*time.Millisecond, FallbackDelay(c))
+	}
+
+	configtest.ForEachFileType(path, fileConfigTest)
+
+	t.Run("ENV", func(t *testing.T) {
+		configtest.ForEnvFileType(t, path, fileConfigTest)
+	})
+}

config/example/node.env

@@ -206,3 +206,10 @@ FROSTFS_RUNTIME_SOFT_MEMORY_LIMIT=1073741824
 
 # AUDIT section
 FROSTFS_AUDIT_ENABLED=true
+
+# MULTINET section
+FROSTFS_MULTINET_ENABLED=true
+FROSTFS_MULTINET_SUBNETS="192.168.219.174/24 10.78.70.74/23"
+FROSTFS_MULTINET_BALANCER=roundrobin
+FROSTFS_MULTINET_RESTRICT=false
+FROSTFS_MULTINET_FALLBACK_DELAY=350ms

config/example/node.json

@@ -264,5 +264,15 @@
   },
   "audit": {
     "enabled": true
+  },
+  "multinet": {
+    "enabled": true,
+    "subnets": [
+      "192.168.219.174/24",
+      "10.78.70.74/23"
+    ],
+    "balancer": "roundrobin",
+    "restrict": false,
+    "fallback_delay": "350ms"
   }
 }

config/example/node.yaml

@@ -240,3 +240,12 @@ runtime:
 
 audit:
   enabled: true
+
+multinet:
+  enabled: true
+  subnets:
+    - 192.168.219.174/24
+    - 10.78.70.74/23
+  balancer: roundrobin
+  restrict: false
+  fallback_delay: 350ms

docs/storage-node-configuration.md

@@ -26,7 +26,7 @@ There are some custom types used for brevity:
 | `storage`              | [Storage engine configuration](#storage-section)                    |
 | `runtime`              | [Runtime configuration](#runtime-section)                           |
 | `audit`                | [Audit configuration](#audit-section)                               |
-
+| `multinet`             | [Multinet configuration](#audit-section)                            |
 
 # `control` section
 ```yaml
@@ -436,5 +436,28 @@ audit:
 ```
 
 | Parameter | Type   | Default value | Description                                       |
-|---------------------|--------|---------------|---------------------------------------------------|
+|-----------|--------|---------------|---------------------------------------------------|
-| `soft_memory_limit` | `bool` | false         | If `true` then audit event logs will be recorded. |
+| `enabled` | `bool` | false         | If `true` then audit event logs will be recorded. |
+
+
+# `multinet` section
+Contains multinet parameters.
+
+```yaml
+multinet:
+  enabled: true
+  subnets:
+    - 192.168.219.174/24
+    - 10.78.70.74/23
+  balancer: roundrobin
+  restrict: false
+  fallback_delay: 350ms
+```
+
+| Parameter        | Type       | Default value | Description                                                                                                                |
+| ---------------- | ---------- | ------------- | -------------------------------------------------------------------------------------------------------------------------- |
+| `enabled`        | `bool`     | false         | If `true` then source-based routing is enabled.                                                                            |
+| `subnets`        | `[]string` | empty         | Resulting subnets.                                                                                                         |
+| `balancer`       | `string`   | ""            | Balancer to select network interfaces, allowed values are "" (no balancing, use first suitable interface) or "roundrobin". |
+| `restrict`       | `bool`     | false         | If `true` then any requests that do not match `subnets` will fail.                                                         |
+| `fallback_delay` | `duration` | 350ms         | Delay before fallback to secondary IP addresses in case of hostname resolve.                                               |