feat: initial contracts

contract/types.go

@@ -0,0 +1,34 @@
+package host
+
+import "time"
+
+type MachineID string
+
+type MachinePhase string
+
+type VolumeID string
+
+type VolumeKind string
+
+const (
+	MachinePhasePending  MachinePhase = "pending"
+	MachinePhaseRunning  MachinePhase = "running"
+	MachinePhaseStopping MachinePhase = "stopping"
+	MachinePhaseStopped  MachinePhase = "stopped"
+	MachinePhaseFailed   MachinePhase = "failed"
+	MachinePhaseDeleting MachinePhase = "deleting"
+)
+
+const (
+	VolumeKindSystem VolumeKind = "system"
+	VolumeKindUser   VolumeKind = "user"
+)
+
+type Machine struct {
+	ID          MachineID    `json:"id"`
+	Phase       MachinePhase `json:"phase"`
+	RuntimeHost string       `json:"runtime_host,omitempty"`
+	Error       string       `json:"error,omitempty"`
+	CreatedAt   time.Time    `json:"created_at"`
+	StartedAt   *time.Time   `json:"started_at,omitempty"`
+}