package qemu import ( "context" "encoding/json" "errors" "io" "net/http" "net/url" "github.com/edgelesssys/constellation/internal/cloud/metadata" ) const qemuMetadataEndpoint = "10.42.0.1:8080" // Metadata implements core.ProviderMetadata interface for QEMU. type Metadata struct{} // Supported is used to determine if metadata API is implemented for this cloud provider. func (m *Metadata) Supported() bool { return true } // List retrieves all instances belonging to the current constellation. func (m *Metadata) List(ctx context.Context) ([]metadata.InstanceMetadata, error) { instancesRaw, err := m.retrieveMetadata(ctx, "/peers") if err != nil { return nil, err } var instances []metadata.InstanceMetadata err = json.Unmarshal(instancesRaw, &instances) return instances, err } // Self retrieves the current instance. func (m *Metadata) Self(ctx context.Context) (metadata.InstanceMetadata, error) { instanceRaw, err := m.retrieveMetadata(ctx, "/self") if err != nil { return metadata.InstanceMetadata{}, err } var instance metadata.InstanceMetadata err = json.Unmarshal(instanceRaw, &instance) return instance, err } // GetInstance retrieves an instance using its providerID. func (m Metadata) GetInstance(ctx context.Context, providerID string) (metadata.InstanceMetadata, error) { instances, err := m.List(ctx) if err != nil { return metadata.InstanceMetadata{}, err } for _, instance := range instances { if instance.ProviderID == providerID { return instance, nil } } return metadata.InstanceMetadata{}, errors.New("instance not found") } // SupportsLoadBalancer returns true if the cloud provider supports load balancers. func (m Metadata) SupportsLoadBalancer() bool { return false } // GetLoadBalancerIP returns the IP of the load balancer. func (m Metadata) GetLoadBalancerIP(ctx context.Context) (string, error) { panic("function *Metadata.GetLoadBalancerIP not implemented") } // GetSubnetworkCIDR retrieves the subnetwork CIDR from cloud provider metadata. func (m Metadata) GetSubnetworkCIDR(ctx context.Context) (string, error) { return "10.244.0.0/16", nil } func (m Metadata) retrieveMetadata(ctx context.Context, uri string) ([]byte, error) { url := &url.URL{ Scheme: "http", Host: qemuMetadataEndpoint, Path: uri, } req, err := http.NewRequestWithContext(ctx, http.MethodGet, url.String(), nil) if err != nil { return nil, err } res, err := (&http.Client{}).Do(req) if err != nil { return nil, err } defer res.Body.Close() return io.ReadAll(res.Body) }