refactor: use resource watches on dashboard

Instead of doing excessive get/list requests, do a watch per node in an infinite retry.

Additionally, refactor the dashboard code to make the various data listener namings more consistent and reorganize the packages.

Closes #6960.

Signed-off-by: Utku Ozdemir <utku.ozdemir@siderolabs.com>

internal/pkg/dashboard/datasource/datasource.go → internal/pkg/dashboard/apidata/apidata.go

@@ -2,5 +2,5 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-// Package datasource implements data sources for the dashboards.
-package datasource
+// Package apidata implements the types and the data sources for the data sourced from various Talos APIs.
+package apidata

internal/pkg/dashboard/data/data.go → internal/pkg/dashboard/apidata/data.go

@@ -2,8 +2,8 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-// Package data implements types to handle monitoring data, calculate values from it, etc.
-package data
+// Package apidata implements types to handle monitoring data, calculate values from it, etc.
+package apidata
 
 import (
 	"time"

internal/pkg/dashboard/data/diff.go → internal/pkg/dashboard/apidata/diff.go

@@ -2,7 +2,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-package data
+package apidata
 
 import "github.com/siderolabs/talos/pkg/machinery/api/machine"
 

internal/pkg/dashboard/data/node.go → internal/pkg/dashboard/apidata/node.go

@@ -2,18 +2,12 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-package data
+package apidata
 
 import (
 	"github.com/siderolabs/gen/slices"
 
 	"github.com/siderolabs/talos/pkg/machinery/api/machine"
-	"github.com/siderolabs/talos/pkg/machinery/resources/cluster"
-	"github.com/siderolabs/talos/pkg/machinery/resources/config"
-	"github.com/siderolabs/talos/pkg/machinery/resources/hardware"
-	"github.com/siderolabs/talos/pkg/machinery/resources/k8s"
-	"github.com/siderolabs/talos/pkg/machinery/resources/network"
-	"github.com/siderolabs/talos/pkg/machinery/resources/runtime"
 )
 
 // Node represents data gathered from a single node.
@@ -38,18 +32,6 @@ type Node struct {
 
 	// Time-series data.
 	Series map[string][]float64
-
-	MachineStatus     *runtime.MachineStatus
-	MachineType       *config.MachineType
-	KubeletSpec       *k8s.KubeletSpec
-	ResolverStatus    *network.ResolverStatus
-	TimeServerStatus  *network.TimeServerStatus
-	SystemInformation *hardware.SystemInformation
-	ClusterInfo       *cluster.Info
-	StaticPodStatuses []*k8s.StaticPodStatus
-	RouteStatuses     []*network.RouteStatus
-	LinkStatuses      []*network.LinkStatus
-	Members           []*cluster.Member
 }
 
 // MemUsage as used/total.