Release v3.0

The "near future" has finally come, so here is a new major release with full support for NATS Key/Value Store!

Including support for the newest features in NATS 2.10:

• subject transforms
• metadata in streams, consumers and KV buckets
• stream compression
• better alignment with JetStream Client API v2

Moreover: nats-tcl is the first among all NATS clients to support KV API v1.1 - the new way to build hub/leaf node deployments based on subject transforms.

New features

Core NATS

• support for creating a named connection object using TclOO create
• new cget option -status to get the current connection status
• new configure option -request_timeout - 10s by default
• new jet_stream option -api_prefix
• automatic "garbage collection" of TclOO objects after destroying the "parent" connection object
• new proc mymethod

JetStream

• support for ordered consumers per ADR-15 and ADR-17 #26
• new add_stream options: -mirror, -sources #25 , -mirror_direct, -republish
• new method stream_direct_get #24
• new methods account_info, api_prefix, timeout, update_stream, update_consumer
• new procs: make_stream_source, make_subject_transform, make_republish

Key/Value

• improved implementation of kv_watcher based on ordered_consumer
• KV buckets use "Direct Get" under the hood
• new methods create_kv_aggregate, create_kv_mirror
• new proc make_kv_origin
• new watch options -idle_heartbeat and -updates_only

Bugfixes

• fixed the message headers parser that would fail if a header value contained a colon, or the "Description" header contained a space
• fix a bug with sync requests that do not return at all, if a user calls disconnect
• fix a bug when buffered PUBs are not flushed after reconnecting, if there are no SUBs to restore
• fixed a bug in CloseSocket : don't try to flush the socket while we're reconnecting, and user called disconnect

Warnings

• metadata is moved from jet_stream class to nats namespace
• consume is now deprecated - use fetch instead

Plus many more unit tests (233 in total!), improved error handling, documentation and examples.