pptx704
a1bd439c75
Implement full snapshot lifecycle: pause (snapshot + free resources), resume (UFFD-based lazy restore), and named snapshot templates that can spawn new sandboxes from frozen VM state. Key changes: - Snapshot header system with generational diff mapping (inspired by e2b) - UFFD server for lazy page fault handling during snapshot restore - Stable rootfs symlink path (/tmp/fc-vm/) for snapshot compatibility - Templates DB table and CRUD API endpoints (POST/GET/DELETE /v1/snapshots) - CreateSnapshot/DeleteSnapshot RPCs in hostagent proto - Reconciler excludes paused sandboxes (expected absent from host agent) - Snapshot templates lock vcpus/memory to baked-in values - Proper cleanup of uffd sockets and pause snapshot files on destroy
26 lines
610 B
Go
26 lines
610 B
Go
package id
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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)
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// NewSandboxID generates a new sandbox ID in the format "sb-" + 8 hex chars.
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func NewSandboxID() string {
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b := make([]byte, 4)
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if _, err := rand.Read(b); err != nil {
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panic(fmt.Sprintf("crypto/rand failed: %v", err))
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}
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return "sb-" + hex.EncodeToString(b)
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}
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// NewSnapshotName generates a snapshot name in the format "template-" + 8 hex chars.
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func NewSnapshotName() string {
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b := make([]byte, 4)
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if _, err := rand.Read(b); err != nil {
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panic(fmt.Sprintf("crypto/rand failed: %v", err))
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}
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return "template-" + hex.EncodeToString(b)
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}
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