chore: init scheduler entities

pkg/client/deploy/scheduler/machine.go

@@ -0,0 +1,50 @@
+package scheduler
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/docker/docker/api/types/volume"
+	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/psviderski/uncloud/pkg/api"
+)
+
+type Client interface {
+	api.MachineClient
+	api.VolumeClient
+}
+
+type Machine struct {
+	Info    *pb.MachineInfo
+	Volumes []volume.Volume
+}
+
+// InspectMachines retrieves the list of available machines and their details required for scheduling purposes.
+// TODO: refactor to get all the details in one broadcast call to machine API.
+func InspectMachines(ctx context.Context, cli Client) ([]*Machine, error) {
+	machineMembers, err := cli.ListMachines(ctx, &api.MachineFilter{Available: true})
+	if err != nil {
+		return nil, fmt.Errorf("list machines: %w", err)
+	}
+	volumes, err := cli.ListVolumes(ctx, nil)
+	if err != nil {
+		return nil, fmt.Errorf("list volumes: %w", err)
+	}
+
+	var machines []*Machine
+	for _, m := range machineMembers {
+		machine := &Machine{
+			Info: m.Machine,
+		}
+
+		for _, v := range volumes {
+			if v.MachineID == m.Machine.Id {
+				machine.Volumes = append(machine.Volumes, v.Volume)
+			}
+		}
+
+		machines = append(machines, machine)
+	}
+
+	return machines, nil
+}