Delete Coordinator core and apis

internal/cloud/metadata/metadata.go

@@ -0,0 +1,59 @@
+package metadata
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"strconv"
+
+	"github.com/edgelesssys/constellation/coordinator/role"
+	"github.com/edgelesssys/constellation/internal/constants"
+)
+
+// Instance describes metadata of a peer.
+type InstanceMetadata struct {
+	Name          string
+	ProviderID    string
+	Role          role.Role
+	PrivateIPs    []string
+	PublicIPs     []string
+	AliasIPRanges []string
+	// SSHKeys maps usernames to ssh public keys.
+	SSHKeys map[string][]string
+}
+
+type metadataAPI interface {
+	// List retrieves all instances belonging to the current constellation.
+	List(ctx context.Context) ([]InstanceMetadata, error)
+	// Self retrieves the current instance.
+	Self(ctx context.Context) (InstanceMetadata, error)
+	// SignalRole signals the constellation role via cloud provider metadata (if supported by the CSP and deployment type, otherwise does nothing).
+	SignalRole(ctx context.Context, role role.Role) error
+	// SetVPNIP stores the internally used VPN IP in cloud provider metadata (if supported and required for autoscaling by the CSP, otherwise does nothing).
+	SetVPNIP(ctx context.Context, vpnIP string) error
+	// Supported is used to determine if metadata API is implemented for this cloud provider.
+	Supported() bool
+}
+
+// TODO(katexochen): Rename to InitEndpoints
+func CoordinatorEndpoints(ctx context.Context, api metadataAPI) ([]string, error) {
+	if !api.Supported() {
+		return nil, errors.New("retrieving instances list from cloud provider is not yet supported")
+	}
+	instances, err := api.List(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("retrieving instances list from cloud provider: %w", err)
+	}
+	coordinatorEndpoints := []string{}
+	for _, instance := range instances {
+		// check if role of instance is "Coordinator"
+		if instance.Role == role.Coordinator {
+			for _, ip := range instance.PrivateIPs {
+				coordinatorEndpoints = append(coordinatorEndpoints, net.JoinHostPort(ip, strconv.Itoa(constants.CoordinatorPort)))
+			}
+		}
+	}
+
+	return coordinatorEndpoints, nil
+}