[NPM-4131] Use module for network path payload (#33336)

Author: pimlu

go.mod

@@ -102,7 +102,9 @@ replace (
 	github.com/DataDog/datadog-agent/pkg/logs/status/utils => ./pkg/logs/status/utils
 	github.com/DataDog/datadog-agent/pkg/logs/util/testutils => ./pkg/logs/util/testutils
 	github.com/DataDog/datadog-agent/pkg/metrics => ./pkg/metrics/
+	github.com/DataDog/datadog-agent/pkg/network/payload => ./pkg/network/payload
 	github.com/DataDog/datadog-agent/pkg/networkdevice/profile => ./pkg/networkdevice/profile
+	github.com/DataDog/datadog-agent/pkg/networkpath/payload => ./pkg/networkpath/payload
 	github.com/DataDog/datadog-agent/pkg/obfuscate => ./pkg/obfuscate
 	github.com/DataDog/datadog-agent/pkg/orchestrator/model => ./pkg/orchestrator/model
 	github.com/DataDog/datadog-agent/pkg/process/util/api => ./pkg/process/util/api
@@ -575,6 +577,8 @@ require (
 	github.com/DataDog/datadog-agent/comp/otelcol/ddflareextension/impl v0.64.0-devel
 	github.com/DataDog/datadog-agent/pkg/config/structure v0.61.0
 	github.com/DataDog/datadog-agent/pkg/fips v0.0.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/network/payload v0.0.0-00010101000000-000000000000
+	github.com/DataDog/datadog-agent/pkg/networkpath/payload v0.0.0-00010101000000-000000000000
 	github.com/DataDog/datadog-agent/pkg/util/defaultpaths v0.64.0-devel
 	github.com/DataDog/datadog-agent/pkg/util/utilizationtracker v0.0.0
 	github.com/DataDog/dd-trace-go/v2 v2.0.0-beta.11

go.work

@@ -91,7 +91,9 @@ use (
 	pkg/logs/status/utils
 	pkg/logs/util/testutils
 	pkg/metrics
+	pkg/network/payload
 	pkg/networkdevice/profile
+	pkg/networkpath/payload
 	pkg/obfuscate
 	pkg/orchestrator/model
 	pkg/process/util/api

modules.yml

@@ -188,7 +188,9 @@ modules:
     used_by_otel: true
   pkg/metrics:
     used_by_otel: true
+  pkg/network/payload: default
   pkg/networkdevice/profile: default
+  pkg/networkpath/payload: default
   pkg/obfuscate:
     used_by_otel: true
   pkg/orchestrator/model:

pkg/network/event_common.go

@@ -18,6 +18,7 @@ import (
 	"go4.org/intern"
 
 	"github.com/DataDog/datadog-agent/pkg/network/dns"
+	networkpayload "github.com/DataDog/datadog-agent/pkg/network/payload"
 	"github.com/DataDog/datadog-agent/pkg/network/protocols"
 	"github.com/DataDog/datadog-agent/pkg/network/protocols/http"
 	"github.com/DataDog/datadog-agent/pkg/network/protocols/kafka"
@@ -298,14 +299,10 @@ type ConnectionStats struct {
 }
 
 // Via has info about the routing decision for a flow
-type Via struct {
-	Subnet Subnet `json:"subnet,omitempty"`
-}
+type Via = networkpayload.Via
 
 // Subnet stores info about a subnet
-type Subnet struct {
-	Alias string `json:"alias,omitempty"`
-}
+type Subnet = networkpayload.Subnet
 
 // IPTranslation can be associated with a connection to show the connection is NAT'd
 type IPTranslation struct {

pkg/network/payload/go.mod

@@ -0,0 +1,3 @@
+module github.com/DataDog/datadog-agent/pkg/network/payload
+
+go 1.23.0

pkg/network/payload/types.go

@@ -0,0 +1,17 @@
+// Unless explicitly stated otherwise all files in this repository are licensed
+// under the Apache License Version 2.0.
+// This product includes software developed at Datadog (https://www.datadoghq.com/).
+// Copyright 2025-present Datadog, Inc.
+
+// Package payload separates network types used as JSON payloads into a module
+package payload
+
+// Via has info about the routing decision for a flow
+type Via struct {
+	Subnet Subnet `json:"subnet,omitempty"`
+}
+
+// Subnet stores info about a subnet
+type Subnet struct {
+	Alias string `json:"alias,omitempty"`
+}

pkg/networkpath/payload/go.mod

@@ -0,0 +1,10 @@
+module github.com/DataDog/datadog-agent/pkg/networkpath/payload
+
+go 1.23.0
+
+replace github.com/DataDog/datadog-agent/pkg/network/payload => ../../network/payload
+
+require (
+	github.com/DataDog/datadog-agent/pkg/network/payload v0.0.0-00010101000000-000000000000
+	github.com/google/uuid v1.6.0
+)

pkg/networkpath/payload/go.sum

@@ -6,7 +6,7 @@
 // Package payload contains Network Path payload
 package payload
 
-import "github.com/DataDog/datadog-agent/pkg/network"
+import "github.com/DataDog/datadog-agent/pkg/network/payload"
 
 // Protocol defines supported network protocols
 // Please define new protocols based on the Keyword from:
@@ -48,7 +48,7 @@ type NetworkPathHop struct {
 // about the source of a path
 type NetworkPathSource struct {
 	Hostname    string       `json:"hostname"`
-	Via         *network.Via `json:"via,omitempty"`
+	Via         *payload.Via `json:"via,omitempty"`
 	NetworkID   string       `json:"network_id,omitempty"` // Today this will be a VPC ID since we only resolve AWS resources
 	Service     string       `json:"service,omitempty"`
 	ContainerID string       `json:"container_id,omitempty"`