feat: implement influx restore using new APIs (#121)

internal/backup_restore/manifest.go

@@ -0,0 +1,94 @@
+package backup_restore
+
+import (
+	"fmt"
+	"time"
+)
+
+type FileCompression int
+
+const (
+	NoCompression FileCompression = iota
+	GzipCompression
+)
+
+func (c *FileCompression) Set(v string) error {
+	switch v {
+	case "none":
+		*c = NoCompression
+	case "gzip":
+		*c = GzipCompression
+	default:
+		return fmt.Errorf("unsupported format: %q", v)
+	}
+	return nil
+}
+
+func (c FileCompression) String() string {
+	switch c {
+	case NoCompression:
+		return "none"
+	case GzipCompression:
+		return "gzip"
+	default:
+		panic("Impossible!")
+	}
+}
+
+const ManifestExtension = "manifest"
+
+type Manifest struct {
+	KV      ManifestFileEntry     `json:"kv"`
+	SQL     ManifestFileEntry     `json:"sql"`
+	Buckets []ManifestBucketEntry `json:"buckets"`
+}
+
+type ManifestFileEntry struct {
+	FileName    string          `json:"fileName"`
+	Size        int64           `json:"size"`
+	Compression FileCompression `json:"compression"`
+}
+
+type ManifestBucketEntry struct {
+	OrganizationID         string                    `json:"organizationID"`
+	OrganizationName       string                    `json:"organizationName"`
+	BucketID               string                    `json:"bucketID"`
+	BucketName             string                    `json:"bucketName"`
+	Description            *string                   `json:"description,omitempty"`
+	DefaultRetentionPolicy string                    `json:"defaultRetentionPolicy"`
+	RetentionPolicies      []ManifestRetentionPolicy `json:"retentionPolicies"`
+}
+
+type ManifestRetentionPolicy struct {
+	Name               string                 `json:"name"`
+	ReplicaN           int32                  `json:"replicaN"`
+	Duration           int64                  `json:"duration"`
+	ShardGroupDuration int64                  `json:"shardGroupDuration"`
+	ShardGroups        []ManifestShardGroup   `json:"shardGroups"`
+	Subscriptions      []ManifestSubscription `json:"subscriptions"`
+}
+
+type ManifestShardGroup struct {
+	ID          int64                `json:"id"`
+	StartTime   time.Time            `json:"startTime"`
+	EndTime     time.Time            `json:"endTime"`
+	DeletedAt   *time.Time           `json:"deletedAt,omitempty"`
+	TruncatedAt *time.Time           `json:"truncatedAt,omitempty"`
+	Shards      []ManifestShardEntry `json:"shards"`
+}
+
+type ManifestShardEntry struct {
+	ID          int64        `json:"id"`
+	ShardOwners []ShardOwner `json:"shardOwners"`
+	ManifestFileEntry
+}
+
+type ShardOwner struct {
+	NodeID int64 `json:"nodeID"`
+}
+
+type ManifestSubscription struct {
+	Name         string   `json:"name"`
+	Mode         string   `json:"mode"`
+	Destinations []string `json:"destinations"`
+}