Files
s3/weed/mq/logstore/merged_read.go
zooqueen dd74d3e6d6 Replace AGPL MinIO fork with Apache-2.0 SeaweedFS fork; rebrand CLI weed->s3
hanzoai/s3 was an AGPL-3.0 MinIO fork whose network-copyleft blocks embedding
and reselling as a managed service. Replace it wholesale with a fork of
SeaweedFS (github.com/seaweedfs/seaweedfs, Apache-2.0, Go) which ships a
built-in S3 gateway + Filer.

- License: AGPL-3.0 -> Apache-2.0 (upstream LICENSE kept verbatim, incl.
  "Copyright 2025 Chris Lu"); NOTICE added crediting SeaweedFS. No AGPL/BUSL/
  SSPL/GPL or enterprise ("ee") files remain.
- Module: go.mod path set to github.com/hanzoai/s3 with a self-replace
  (replace github.com/seaweedfs/seaweedfs => ./) so the ~1800 internal Go files
  keep their upstream import paths with zero churn. Internal identifiers and
  import paths are intentionally NOT renamed.
- CLI rebrand: the binary is built as `s3` (was `weed`); root usage, per-command
  help/usage/flag strings, shell autocomplete program name, and the product name
  in CLI output now read "Hanzo S3" / `s3`. Users never see `weed`.
  (e.g. `s3 server`, `s3 filer`, `s3 master`, `s3 volume`, `s3 s3`, `s3 mount`.)
- Build: `make` (or `go build -o s3 ./weed`) builds the `s3` binary green;
  `cmd/weed-db` and `cmd/weed-sql` also build; `go vet ./weed/command/` clean.
- README/LLM.md rewritten for Hanzo S3; AGENTS.md/CLAUDE.md symlinks preserved.
- Dropped a 33MB prebuilt Mach-O `stress` binary upstream had committed; `.gitignore`
  updated to ignore the `s3` build output.
2026-06-18 23:41:25 -07:00

51 lines
2.1 KiB
Go

package logstore
import (
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util/log_buffer"
)
func GenMergedReadFunc(filerClient filer_pb.FilerClient, t topic.Topic, p topic.Partition) log_buffer.LogReadFromDiskFuncType {
fromParquetFn := GenParquetReadFunc(filerClient, t, p)
readLogDirectFn := GenLogOnDiskReadFunc(filerClient, t, p)
// Reversed order: live logs first (recent), then Parquet files (historical)
// This provides better performance for real-time analytics queries
return mergeReadFuncs(readLogDirectFn, fromParquetFn)
}
func mergeReadFuncs(readLogDirectFn, fromParquetFn log_buffer.LogReadFromDiskFuncType) log_buffer.LogReadFromDiskFuncType {
// CRITICAL FIX: Removed stateful closure variables (exhaustedLiveLogs, lastProcessedPosition)
// These caused the function to skip disk reads on subsequent calls, leading to
// Schema Registry timeout when data was flushed after the first read attempt.
// The function must be stateless and check for data on EVERY call.
return func(startPosition log_buffer.MessagePosition, stopTsNs int64, eachLogEntryFn log_buffer.EachLogEntryFuncType) (lastReadPosition log_buffer.MessagePosition, isDone bool, err error) {
// Always try reading from live logs first (recent data)
lastReadPosition, isDone, err = readLogDirectFn(startPosition, stopTsNs, eachLogEntryFn)
if isDone {
// For very early timestamps (like timestamp=1 for RESET_TO_EARLIEST),
// we want to continue to read from in-memory data
isDone = false
}
if err != nil {
return
}
// If live logs returned data, update startPosition for parquet read
if lastReadPosition.Offset > startPosition.Offset || lastReadPosition.Time.After(startPosition.Time) {
startPosition = lastReadPosition
}
// Then try reading from Parquet files (historical data)
lastReadPosition, isDone, err = fromParquetFn(startPosition, stopTsNs, eachLogEntryFn)
if isDone {
// For very early timestamps (like timestamp=1 for RESET_TO_EARLIEST),
// parquet files won't exist, but we want to continue to in-memory data reading
isDone = false
}
return
}
}