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Artem LytvynandJohn Myers
470a34635d
* fix(api): emit warning on WatchSandbox broadcast lag instead of terminating Broadcast lag on the status, log, and platform receivers was converted to a RESOURCE_EXHAUSTED status that terminated the whole watch stream. Lag is recoverable: the receiver resumes at the oldest surviving message. Emit a SandboxStreamWarning and continue streaming instead; keep terminating on Closed. Add helpers and unit tests covering the warning payload and receiver recovery after lag. Partially addresses #3055 (cursor/resume follow up separately). Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * refactor(server): group per-sandbox log bus state and stamp sequence numbers Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * feat(proto): add resume cursor fields to sandbox watch API Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * feat(server): stamp watch cursors from a shared per-sandbox sequence Allocate cursors from a single SeqAllocator shared by the log and platform event buses, so a sandbox's merged watch stream carries unique, strictly increasing cursors. A single resume_after_cursor can then unambiguously locate a client's position across both sources. Rewrite both publish paths to allocate the sequence, stamp event.cursor, send, and append to the tail under one lock. This removes the previous get_mut().expect() TOCTOU race where a concurrent remove() between the two lock sections could panic. Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * feat(server): serve WatchSandbox resume from cursor with gap detection Add tail_after() to the log and platform event buses, returning every buffered event newer than a client's resume cursor. Each PerSandbox now tracks last_trimmed_seq (the highest seq it has evicted) so a resume is reported as an unrecoverable ResumeGap only when this bus dropped an event the client still needs. Judging gaps by evictions, not by the tail's oldest seq, is required under the shared cursor space: each bus's tail is non-contiguous in the global sequence because the other bus owns the missing seqs, so comparing against tail.front() would flag false gaps. Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * feat(server): resume WatchSandbox from cursor across log and platform buses Wire resume_after_cursor into the watch producer. On a non-zero cursor, replay events strictly after it from both the log and platform buses, merge by shared cursor, and emit in order before entering the live loop. A trimmed range on either bus is an unrecoverable gap and terminates the stream with OUT_OF_RANGE carrying the requested and earliest-available cursors, distinct from recoverable lag which warns and continues. Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * test(server): cover WatchSandbox cursor resume paths Add handler-level tests for the resumable watch stream: replay strictly after the client cursor, merge log and platform events in shared-cursor order, suppress duplicates when resuming at the latest cursor, and terminate with OUT_OF_RANGE when the requested cursor has been trimmed. Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * docs(api): document WatchSandbox loss-awareness and resume Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(server): deliver watch events once and harden cursor teardown Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * feat(sdk): add loss-aware resumable watch_logs to Rust SDK client Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(server): keep watch cursors monotonic across teardown and restart Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(server): merge live watch sources by cursor before emission Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(api): bind watch cursors to a cursor space and merge tail sources Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(server): revalidate the watch cursor space after collecting replay Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * test(server): update the public RPC schema fingerprint for the string cursor Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(server): hold watch events above the publication watermark and emit the watch lag warning before its batch Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * test(server): synchronize the watch live-order test with the end of initialization Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(sdk): use canonical sandbox name in watch_logs Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * test(sdk): guard canonical-name addressing in watch_logs Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(server): fix public rpc schema Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> * fix(api): reconcile watch resume rebase Signed-off-by: John Myers <9696606+johntmyers@users.noreply.github.com> * fix(server): bound interactive relay cleanup Signed-off-by: John Myers <9696606+johntmyers@users.noreply.github.com> --------- Signed-off-by: Artem Lytvyn <alytvyn@redhat.com> Signed-off-by: John Myers <9696606+johntmyers@users.noreply.github.com> Co-authored-by: John Myers <9696606+johntmyers@users.noreply.github.com>