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Phase 1 of the Base Network archive tier: witness-only validator
appends quasar-finalised WAL frames to object storage as per-shard
.lbn segments. PITR replay recovers SQLite state at any txseq.
Scope:
- network/archive.go Archive interface + URL dispatch
(s3://…|gs://…|off)
- network/segment.go .lbn encoder/decoder. Magic "LBN1",
CRC32-IEEE footer. Forwards-compat via
magic bump on any format change.
- network/archive_writer.go Goroutine-per-shard buffer with
size+time flush, exponential-backoff
retry against RetryDeadline, and
never-drop re-buffering on timeout.
- network/archive_s3.go minio-go/v7 backend. Works against AWS
S3 and any MinIO-protocol endpoint —
hanzoai/s3 self-hosted is one such.
Static creds from AWS_ACCESS_KEY_ID /
SECRET, else IAM/IRSA via
credentials.NewIAM().
- network/archive_gcs.go cloud.google.com/go/storage backend.
ADC by default; Workload Identity in
k8s, GOOGLE_APPLICATION_CREDENTIALS
for local dev.
- hack/pitr-restore.go CLI replay tool. Usage:
pitr-restore --archive gs://…/svc \
--shard <id> --to-seq <n> \
--out file.db
Writes a SQLite file with one row per
frame; Base's real apply path replays
into the schema.
Segment layout: "LBN1" | shardIDLen u16 | shardID | startSeq u64 |
frameCount u32 | (frameLen u32 | frameBytes){N} | crc32 footer.
PQ signature on each frame is preserved byte-for-byte — the
archive never re-signs.
Storage key layout per docs/NETWORK.md:
<svc>/<shard>/<16-digit-seq-prefix>/<20-digit-start-seq>.lbn
Config knobs (defaults): SegmentTargetBytes=8MiB, FlushInterval=10s,
RetryDeadline=5m. lagBytes gauge reflects backlog awaiting flush.
Metrics binding: BindArchiveMetrics(*Metrics) wires archive callbacks
onto the core Metrics.ArchiveLagBytes gauge + ApplyErrors counter.
Archive stays decoupled from prometheus/client_golang.
Tests: 12 archive-specific tests pass alongside the 20 network tests
from Phase 1 (32/32 total). Integration tests (`//go:build integration`)
cover 1000-frame S3 round-trip against local MinIO and PITR CLI
restore of 100 frames at cut-off seq 50 producing a SQLite file
with exactly 50 rows.