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Change Log

2.20.5

Core

  • feat(nats-connection): implement named executor thread factories #1254 @kedzie
  • Edit lock don't unlock if was not locked. #1255 @scottf
  • Executor and Executor Factories in Options can be created via properties #1257 @scottf

JetStream

  • Fix simplified ordered consuming when a delivery policy was set. #1251 @scottf @roeschter
  • Fix: exception on simple consume when disconnected immediately #1253 @roeschter

Documentation

  • NoWait documentation #1256 @roeschter

Tests

  • Unit test coverage #1252 @scottf

2.20.4

Core

  • Don't flush after the request from publishAsync calls #1220 @scottf

JetStream

  • Easier access to timeout in JetStream implementations #1236 @scottf

Object Store

  • Minor object store improvement - complete faster #1237 @scottf

Documentation

  • Javadocs Improvements #1221 @roeschter
  • Callout external docs and examples #1224 @scottf

Tests

  • Fixed tests for 2.8.4 regression stream and consumer metadata #1225 @scottf
  • Test base code improvements #1240 @scottf

Misc

  • Add publish of test code jar to builds. #1230 @scottf

2.20.3

SKIPPED

2.20.2

Core

  • Publishing plus immediate flush #1211 @scottf
  • When interrupted call interrupt #1212 @MauriceVanVeen
  • Interrupt fine tuning #1214 @scottf
  • Run loops check the interrupted flag #1215 @scottf
  • Tuning futures used for internal tracking #1216 @scottf
  • Fix cleanResponses must handle cleaning up cancelled future #1218 @MauriceVanVeen

2.20.1

Core

  • Catch errors in Dispatchers and log #1200 @MauriceVanVeen
  • During forceReconnect, ensure reader/writer is stopped before continuing #1203 @MauriceVanVeen @scottf
  • While handleCommunicationIssue, closeSocket should use reconnect impl otherwise tryingToConnect will guard #1206 @MauriceVanVeen @scottf
  • Remove redundant writer.flushBuffer() call #1207 @MauriceVanVeen

Documentation

  • Jetstream Usage #1193 @roeschter
  • Recommended (new) APIs and more example code #1191 @roeschter

2.20.0

Core

  • CONNECT username and password need json encoding #1168 @scottf
  • UTF subject support #1169 @scottf
  • Handle InterruptedException when obtaining the lock to queue a message. #1170 @scottf
  • Handle duration string when accepting duration properties #1183 @scottf
  • Make NatsServerPool extendable #1185 @scottf
  • Allow user to set socket read timeout option #1188 @scottf

JetStream

  • Stream state subjects as a map #1177 @scottf
  • Stream state more efficient loading of subjects #1179 @scottf

Key Value

  • Add filtering to KV keys methods #1173 @scottf
  • Add filtering to KV keys methods - Use greater than constant #1174 @scottf
  • Add filtering to KV keys methods - remove unnecessary optimization #1175 @scottf

Object Store

  • Object Store use over leaf-hub domain part 2 #1172 @scottf

Unit Testing

  • Test implementation dependency update #1167 @scottf
  • Improve cluster testing support #1171 @scottf
  • Change test to run against 2.10 or later #1180 #1181 @scottf
  • Flapper Reconnect test fix #1189 @scottf

Project Management

  • Switch to Eclipse Temurin and add SDKMan for local dev #1176 @artur-ciocanu
  • Allowing building main on workflow_dispatch #1186 @scottf

2.19.1

Core

  • [Bug] Maximum Message Size accepted a long, but should accept an int #1161 @scottf
  • [Bug] Poison pill comparison was failing #1162 @scottf
  • Augmented force reconnect #1165 @scottf

Object Store

  • Object Store use over leaf-hub domain #1160 @scottf

Misc

  • Serialization changed, fixed javadocs #1159 @scottf

2.19.0

Core

Improve socket close behavior #1155 @scottf

Tests

Additional NKey Tests #1154 @scottf

Misc

Experimental Retrier utility removed to its own project/repo #1153 @scottf

2.18.1

Core

  • General Retry Functionality #1145 @scottf
  • Cluster string in Placement is optional. #1150 @scottf
  • Remove duplicate reconnect event #1151 @scottf

JetStream

  • Support 409 Leadership Change #1144 @scottf

Doc

  • Update docs and comments (MessageQueue, forceReconnect) #1142 @scottf

2.18.0 / 2.17.7

2.18.0 and 2.17.7 are identical.

2.18.0 attempts to start us on the road to properly Semantic Version (semver). In the last few patch releases, changes that should have been exposed via a minor version bump were numbered as a patch.

Even if just one api is newly added, semver requires that we bump the minor version. The forceReconnect api is an example of one api being added to the Connection interface. It should have resulted in a minor version bump.

Going forward, when a release contains only bug fixes, it's appropriate to simply bump the patch. But if an api is added, even one, then the minor version will be bumped.

Core

  • Revert headers from being read-only upon message creation #1123 @scottf
  • tls_available support #1127 @scottf
  • Revisit Write Timeout Handling #1128 @scottf
  • Remove rethrowable runtime exception during connection #1137 @ajax-surovskyi-y

JetStream

  • Fix #1125 NatsJetStreamMetaData timestamp timezone #1126 @mrmx

Doc

  • Update Readme with links to docs and examples. #1119 @scottf

Misc

  • Refactor Encoding util for easier replacement of Base64 encoding class #1121 @scottf

2.17.6 / 2.17.5

2.17.6 was released immediately after 2.17.5. The allowing of a comma delimited list of keys was removed. This is noted since it was technically available for several hours even though it was never publicly announced, and will be considered a bug fix.

Core

  • Log connect trace server uri when reconnecting #1106 @photizzo
  • Ensure NatsConnection inboxDispatcher is started prior to publishing messages #1109 @nathanschile

JetStream

  • Add support for Consumer Create Action #1108 @scottf

KV

  • KV Watch Multiple Filters #1113 @scottf
  • KV Watch Multiple Filters Additional Test #1114 @scottf
  • KV Watch Multiple Filters remove comma delimited support #1117

Simplification

Test

  • Testing Cleanup Only - No Functionality Changes #1110 @scottf
  • Don't run testAddStreamInvalids with server older than 2.10 #1111 @scottf

Doc

  • Added graalvm setup example #1112 @YunaBraska
  • Graalvm readme touch-up #1115 @scottf

Misc

2.17.4

Core

  • Fix reconnect() calls close() when simultaneously 'disconnecting' in another thread #1082 @MauriceVanVeen
  • Optional dispatching with executor instead of blocking #1083 @scottf
  • Offer timeout millis no longer hardcoded #1088 @scottf
  • ReentrantLock instead of synchronized #1095 @scottf
  • Force Reconnect API #1100 @scottf
  • SSLContextFactory #1101 @scottf

JetStream

  • Implement Consumers Pause #1093 @MauriceVanVeen
  • Make sure Fetch No Wait returns as soon as it gets 404/408 #1096 @scottf
  • Message Info always use last value in the headers. #1099 @scottf

KV

  • KV Watch From Revision #1081 @scottf
  • KeyValue atomic delete and purge methods. #1092 @davidmcote
  • KV Transform support. #1098 @scottf

Simplification

  • Allow simplification fetch to have noWait with or without expires. #1089 @scottf

Test

  • Add Test for NUID to handle Sequence and Concurrency #1094 @photizzo

Doc

  • upgrade documentation to specify backoff behavior #1078 @imclem

Misc

  • Chaos App tuning and additional testing while porting. #1080 @scottf

2.17.3

Core

  • Socket Data Port with Manual Write Timeout #1064 @scottf
  • Provide implementation instead of empty trust manager check #1066 @scottf

Test

  • Reconnect On Connect Unit Test #1062 #1063 @scottf

Doc

  • Document Message Immutability Headers Bug #1059 @scottf

2.17.2

Robustness and recovery

Core

  • Support StreamConfiguration creation from JSON #1023 @senior
  • TimeoutException instead of CancellationException on timeout #1031 @maximbreitman
  • Message Headers Improvement #1054 @scottf

JetStream

  • Pull Request Validate Idle Heartbeat Against Expiration #1036 @scottf
  • Client side consumer recovery #1043 @scottf
  • Ensure robustness b/w compatible with server 2.8.4 #1046 @scottf
  • Chaos Testing Tuning #1055 @scottf

Extensions (KV / OS / Service)

  • KV and OS Compression and Metadata #1034 @scottf

Docs / Testing / Examples / Etc.

  • Initialize SocketDataPort directly #1022 @scottf
  • Add dockerfile for compatibility tests #1024 @piotrpio
  • Update jnats-server-runner to 1.2.6 #1027 @scottf
  • Auth Test Improvement #1028 @scottf
  • Test Base Tuning #1030 @scottf
  • Publish Expectations Test for JetStream API Code #1032 @scottf
  • More Tests for recent NatsRequestCompletableFuture enhancement #1035 @scottf
  • Add nats by example link #1037 @Jarema
  • Improve test for real user authentication expired #1040 @scottf
  • Update readme / better subject validation notes #1047 @scottf
  • Fetch Resilient Example #1048 @scottf
  • Refactoring and improving example code. #1049 @scottf

2.17.1

This release added was mostly about TLS and testing

Core

  • Allow trust store without key store #999 @scottf @jnmoyne
  • Allow for custom dispatcher #1001 @scottf
  • Expanded support for server sent authorization errors #1006 @scottf
  • Reconnect on Connect additional api #1012 @scottf
  • Accept Tls First as an Option #1015 @scottf

JetStream

  • Duplicate message for Interest stream fails seq check in PublishAck #1005 @MauriceVanVeen
  • Direct Message Subject Header May Contain Multiple Subjects #1016 @scottf

Service Framework

  • Added custom endpoint queue support and fixed InfoResponse to show proper subject. #1010 @scottf

Docs / Testing / Misc

  • Removing generic-ness from naming #1000 #1004 @scottf
  • Subscribe options name handling vs 2.8.4 #1011 @scottf
  • Client Compatibility Tests engine #1013 @scottf
  • Regression and Test Improvements #1017 #1018 @scottf

2.17.0

This release added:

  • support for server 2.10 features
  • some additional JetStream tuning
  • StatisticsCollector to add flexibility to statistics tracking
  • Better ability to create connection options completely from a properties file
  • Doc updates.

JetStream 2.10 Specific

  • stream/consumer info timestamps, stream config first_seq #962 @scottf
  • Multiple Filter Subjects and Subject validation changes #965 @scottf
  • Stream Configuration Compression Option #976 @scottf
  • Subject Transform Stream Configuration Part 1 #978 @scottf
  • Consumer Limits Stream Configuration #979 @scottf
  • Subject Transforms in Mirror/Info and Source/Info #982 @scottf
  • Multiple Filter Subjects Review #984 @scottf

JetStream

  • Fast Bind #959 @scottf
  • Provide a default consumerByteCount implementation #969 @scottf

Core

  • Add StatisticsCollector to Options for custom statistics tracking #964 @johnlcox
  • Construct Options builder from properties file for user. #971 @scottf
  • Revert removal of client side checks #981 @scottf

Docs / Testing / Misc

  • Test coverage and add note about websocket to readme. #956 @scottf
  • Add issue forms #957 @bruth
  • fixed text in error message #961 @scottf
  • Simplify issue forms #966 @bruth
  • README.md library version more visible #972 @scottf
  • Update README to document connect Options properties #973 @scottf
  • update builds to use better way to install server #975 @scottf
  • Small improvements README.md #977 @aaabramov
  • Minor Api doc fixes #983 @scottf

2.16.14

This release takes the experimental tag off both the Simplification API and the Service Framework.

  • The simplification api has very minor naming changes and the addition of the Ordered Consumer
  • The Service Framework was documented and also had some very minor naming changes.
  • Added the ability to create complete secure Options for connection via configuration file instead of using builder methods. Please see the readme.

Core

  • Minor correction and improved variable naming in NatsConnection #945 @scottf
  • Improving Options with better construction via properties #946 @scottf
  • Minor improvements to README.md #947 @scottf
  • Added unit tests for WebSocket + JWT #939 @scottf
  • Jwt Utils update to support "audience" #949 @scottf

Simplification

  • Simplified Ordered Consumer #936 @scottf
  • Simplified Queue Example #940 @scottf
  • Ensure run simplification tests only if 2.9.1 or later #942 @scottf
  • Simplification More Review #948 @scottf
  • Simplification state, better thread safety #952 @scottf

Service

  • Service / Simplification Documentation and Release Prep #954 @scottf

JetStream

  • fixed rate limit comparison bug #951 @scottf
  • Fix use of JsOptions timeout #953 @scottf

2.16.13

Core

  • Address secure Websocket changes in server 2.9.19 #931 @scottf

JetStream

  • [BUG] Consumer Config fields are 32 bits (ints) not 64 bits (longs) #930 @scottf

Simplification

  • Simplification Tuning and Review #927 @scottf
  • Simplification Review, Tuning, Examples, Testing 2 #929 @scottf

Misc / Test

  • Better testing checks against server versions #932 @scottf

2.16.12

Core

  • WS only read payload from network stream #902 @GrafBlutwurst
  • Remove client side check against server info max_payload when publishing #922 @scottf

JetStream

  • Fixed GetChanges for backoff and metadata #910 @scottf
  • Fine tuning message manger result #921 @scottf
  • Remove validation when adding or updating consumer #923 @scottf

Simplification

  • Completion, tuning, address feedback, etc. #917 #919 #926 @scottf

Service Framework

  • Remove schema from Service API #916 @scottf
  • Change INFO response to contain endpoint details #918 @scottf
  • Fine tune service start / stop #920 @scottf
  • Service code cleanup #925 @scottf

Misc / Test

  • Update dependencies.md #904 @scottf
  • Bump GH Actions versions (Go; node12 deprecation) @philpennock
  • Enhance jwt utils #906 #909 @scottf
  • Message: Fix typo in javadoc #911 @nicoruti
  • Unit test improvements #915 @scottf

2.16.11

Core

  • New connection option reportNoResponders #887 @scottf
  • WS Http Request Version Default To 1.1 #891 @aditya-agarwal-groww

JetStream

  • better pull error message and async tests #888 @scottf
  • better handle pull status message comes from a previous pull #899 @scottf

Misc / Test

  • Test Improvements #886 @scottf
  • Test tuning #889 @scottf
  • Server regression issue was fixed, setting test back #890 @scottf
  • test harness - more flexible way to wait for errors/exceptions #894 @scottf
  • flappers - trying more time #895 @scottf
  • Update plugin repository to refer to existing services after Bintray shutdown #897 @cpiotr

2.16.10

JetStream

  • For JS Subs, expose the consumer name since it's already tracked #869 @scottf
  • Part 1 in pull handling improvements #870 @scottf
  • Part 2 in pull handling improvements #871 @scottf
  • Time used fetching should never be negative #878 @liu-jianyang
  • Pull-fetch-time-left #879 @liu-jianyang
  • Simplification Part 1 #848 @scottf
  • Simplification (Experimental) Part 2 #882 @scottf
  • Simplification pre-experimental-release #884 @scottf

Core

  • fix rehost #874 @scottf
  • Options Builder constructor that takes existing Options #875 @scottf
  • StreamConfiguration and ConsumerConfiguration metadata support #877 @scottf

Misc / Test

  • JsonValue improvement #868 @scottf
  • consume test for bytes can't run until at least 2.9.1 #883 @scottf
  • added metadata map to service and endpoints #862 @scottf

2.16.9

Core

  • ServerPool including Hostname resolution #847 @scottf
  • Enable add/remove of multiple ConnectionListeners per Connection #861 @davidmcote

JetStream

  • pull status handling #819 @scottf

Service (Experimental)

  • use standard connection create inbox for discovery #857 @scottf

Object Store (Experimental)

  • use -1 to indicate end of stream, not lack of full buffer #852 @scottf
  • digest resets after getting value, so can't call it more than once. #854 @scottf

Misc / Test

  • Update docs and examples #846 @scottf
  • 2.10 allows filter subject that doesn't match stream subjects #849 @scottf

2.16.8

Core and JetStream

  • Fill in Publish / Request Header Gaps #839 @scottf

Core

  • Dispatcher with no default handler sometimes has NPE during close if messages are still coming in #841 @scottf
  • allow empty headers #844 @scottf

Test

  • Server runner update to 1.2.0 #843 @scottf

2.16.7

Core

  • Options.builder() fluent #832 @nwseOOO

Service

  • Service multi endpoints #830 @scottf
  • Service fine tuning #833 @scottf
  • Service subject in responses #834 @scottf

2.16.6

Core

  • message size calculation improvements #820 @scottf @MauriceVanVeen
  • consistent validation and version comparison fix #823 @scottf @pskiwi

Service

  • Service Beta #813 @scottf
  • service response types #818 @scottf

Key Value

  • kv additional update api #814 @scottf

Etc. Tests / Docs / Examples

  • fix inactiveThreshold docs in ConsumerConfiguration #809 @MauriceVanVeen
  • verify 810 is not a defect #811 @scottf
  • CI deploy snapshot for a branch #817 @scottf

2.16.5

Core

  • increase default max (pending) messages, ability to set pending limits in subscribe options #799 @scottf
  • better setup of pending limits #804 @scottf
  • ignore auth required flag from server when building connection string #807 @scottf @ColinSullivan1

Etc. Tests / Docs / Examples

  • Fix test only check mirror direct 2.9.0 and later #794 @scottf
  • Fixes typo in Readme #795 @aaabramov
  • Better dev version and autobench naming #798 @scottf
  • Change Temporary File Creation in unit test. #800 @JLLeitschuh
  • fixed test - name not necessary, better for regression #803 @scottf

2.16.4

Key Value (KV)

  • kv mirror support #789 @scottf

JetStream

  • stream state lost #792 @scottf

Core

  • Implement RTT #784 @scottf
  • get client inet address #791 @scottf

Misc

  • Minor fix for README.md Jetstream example #790 @JonasPed

2.16.3

JetStream

  • changed handling of missing offset for paged #782 @scottf

2.16.2

Core

  • reader HMSG protocol line length size was wrong #774 @scottf
  • Message sending optimization #776 @scottf @MauriceVanVeen

Misc

  • Fix Get Streams Doc #771 @scottf
  • PubWithHeadersBenchmark #772 @scottf

2.16.1

Core

  • Fix - Ensure resizing of the sendBuffer #746 @MauriceVanVeen
  • Enhancement - Additional API to clear last error from Nats server #750 @Ryner51
  • Sync NatsMessage.getSizeInBytes() with usage in NatsConnectionWriter #756 @MauriceVanVeen

JetStream

  • discard_new_per_subject #755 @scottf
  • streams / names with subject filtering, info pagination #759 @scottf
  • ordered consumer config setting changes #762 @scottf
  • Ordered Consumer Heartbeat Handling #766 @scottf

KV or OS

  • object store tuning #731 @scottf
  • KV status bytes - Issue #754 @scottf
  • List materialized views #765 @scottf

Examples

  • Example to show handling pub acks in a separate thread than the publish. #748 @scottf

2.16.0 Support Server v2.9.0 and Object Store Experimental

This release is a re-release of 2.15.7 with an additional opt-out and the minor version bump.

JetStream Options Opt-Out

  • Ability to opt-out of using Server v2.9.0 consumer create api #728 @scottf

JetStream / Management

  • Get Message Enhancement #696 @scottf
  • No Erase option on message delete #698 @scottf
  • Support v2.9.0 Get Direct Message feature #701 #703 @scottf
  • Support v2.9.0 Consumer Create feature #723 #725 @scottf

Key Value

  • Fix bug to return null instead of entry on get of deleted or purged key #700 @scottf
  • Allow direct configuration for KV #718 #724 @scottf

Object Store

  • Initial implementation, experimental. #705 #714 #720 @scottf

Core

  • Static Memory Auth Handler #702 @scottf
  • Support v2.9.0 stream configuration republish #709 @scottf

2.15.7 Support Server v2.9.0 and Object Store Experimental

JetStream / Management

  • Get Message Enhancement #696 @scottf
  • No Erase option on message delete #698 @scottf
  • Support v2.9.0 Get Direct Message feature #701 #703 @scottf
  • Support v2.9.0 Consumer Create feature #723 #725 @scottf

Key Value

  • Fix bug to return null instead of entry on get of deleted or purged key #700 @scottf
  • Allow direct configuration for KV #718 #724 @scottf

Object Store

  • Initial implementation, experimental. #705 #714 #720 @scottf

Core

  • Static Memory Auth Handler #702 @scottf
  • Support v2.9.0 stream configuration republish #709 @scottf

2.15.6 new Consumer configuration fields

Core

  • better request timeout management #693 @scottf

JetStream

  • support num_replicas and mem_storage in consumer configuration #689 @goku321 @scottf

Misc

  • Change example to have more flexibility on message size #690 @scottf

2.15.5 re-release 2.15.4 fixes, enhancements and experimental

Core

  • Accept encoded connection urls #674 @scottf
  • Only track duplicate responses when advanced tracking is on #659 @scottf

JetStream

  • revert ConsumerConfiguration changes where some fields were downgraded #685 @scottf
  • consumer info change to sequence_info from sequence_pair #679 @scottf
  • consumer filter subject is now modifiable #676 @scottf
  • handle updated account stats #668 @scottf
  • Ability to create an External object #661 @scottf

KV

  • ability to update bucket config #662 @scottf

Experimental

  • expose management getStreamNamesBySubjectFilter #681 @scottf
  • experimental pull reader #683 @scottf

Tests

  • Add test for NKey.clear #663 @lacinoire

Misc

  • remove comments that say durable is required during pull #675 @scottf
  • better push queue example #670 @scottf
  • fix inactive threshold doc #660 @scottf

2.15.3 Writeable Placement

JetStream

  • Ability for user to create a Placement object PR #655 @scottf

2.15.2 JetStream Improvements

JetStream

  • Pull config changes, ephemeral pull, unit tests PR #645 @scottf
  • Server urls connection management PR #648 @scottf
    • Architecture issue 113 Add option to ignore discovered urls
    • ServersToTryProvider provide a way that a user can provide a complete custom implementation to provide the server urls to try on connect / reconnect. Tiered servers could be implemented this way. EXPERIMENTAL feature.
  • EXPERIMENTAL PullRequestOptions PR #649 @scottf

2.15.1 Remove batch size limitations and add 409 support

JetStream

  • Remove pull batch size limitation PR #642 @scottf
  • Statuses with code 409 are known statuses PR #643 @scottf

2.15.0 Subscription must be made before consumer is created

The order of creating a subscription on the server and creating a consumer on the server matters. Once the consumer is created, there is interest and the server tries to deliver. But if the subscription is not created, the messages are delivered to...nowhere, but are considered delivered.

This was not strictly a problem but it was a race - if the subscription was ready before the consumer was sent messages, then things went fine. Unit test didn't fail. But when we were testing against NGS and in clusters with mixes of JetStream and non-Jetstream servers, the consumer was always ready because of simple latency.

So now the server subscription is always made first avoiding the problem altogether.

See PR #639

2.14.2 Consumer Configuration Change Validation

Improvements

PR #637

  • Added additional validation (unit testing) in relation to PR #635 Improve subscription creation with existing durable to be smarter when comparing provided configuration with server configuration.
  • Added more information to the exception message text by including a list of fields that caused the issue.

2.14.1 Improvements, client parity, docs, etc.

Client Parity

PR #630 Support for server Consumer feature Backoff Lists.

Improvements

Issue #616 / PR #617 Support for timeout propagation in async requests PR #630 Surfaced delay for nak requests PR #631 Tune kv subscribe supported functions keys / history / purge PR #634 Added client side limit checks option to allow turning off client side checks which forces check to server. Default behavior is the same. PR #635 Improve subscription creation with existing durable to be smarter when comparing provided configuration with server configuration.

Bug Fixes

Issue #621 / PR #622 Fixed kv key with dot as part of the key

Documentation etc.

PR #612 Version change and miscellaneous documentation. PR #629 Rate Limit is bytes per second (bps) not messages per second.

2.14.0 KV Release

Key Value

  • KV API Release

JetStream

  • Allow null or empty subject when appropriate while subscribing / binding
  • new JetStreamManagement api StreamInfo getStreamInfo(String streamName, StreamInfoOptions options)
  • support Stream Configuration and Stream State to reflect server changes up to server V2.7.3
  • support Consumer Configuration reflect server changes up to server V2.7.3
  • Fixed bug with pull subscribe fetch and iterate where it could wait twice the expiration time and improved implementation to reflect server changes in pull behavior.
  • Added combo pull nowait + expires primitive api to match server pull changes.

Miscellaneous

  • Addressed Info level Cure53 audit item regarding version string.
  • Moved JsMultiTool out of example to the example repo.
  • Added NatsJsPushSubAsyncQueueDurable example program.
  • Unit test improvements to prevent flappers

2.13.2 KV Experimental

JetStream

KV Experimental

2.13.1 Subscription Consumer Configuration Fix

JetStream

  • This release fixes a bug found in the new subscription enhancements where the comparison of default configuration failed to validate properly against an existing (durable) consumer configuration.

  • There are also minor enhancements to the JsMulti tool

2.13.0 Subscription Enhancements

JetStream

  • Subscription validation. See Subscription Creation
  • Flow Control and Heartbeat handling
  • Domain Support
  • Stream/Subject Binding

2.12.0 Server Queue Improvements

This release is the first release to support v2.4.0 of the NATS server. The change covers how queueing is supported in JetStream using the Deliver Group subscribe option.

2.11.6 KV beta last release compatible with Server v2.3.4 and older

  1. Key Value (KV) Beta: This release includes a beta version of the Key Value functionality. There were multiple PR's involved in KV including new interfaces and new api / protocol enhancements designed to support KV
  2. Support for API error code allowing server generated errors to be identified by number instead of text.
  3. Stream and Consumer descriptions
  4. Publish expectation last subject sequence
  5. Advanced stream purge functionality
  6. Primitive pull functionality marked as "advanced"

Version 2.11.5

Pull Requests

[ENHANCEMENT] PR #506 handle unsigned long values in JetStream api data.

Version 2.11.4

Revert performance fix due to high cpu during idle.

Version 2.11.3

Pull Requests

  • [ENHANCEMENT] PR #472 / #477 benchmark improvements (@scottf)
  • [ENHANCEMENT] PR #473 performance improvements(@scottf)
  • [FIXED] PR #475 fixed filter subject (@scottf)
  • [EXAMPLES] PR #478 Clarify examples with deliver subjects (@scottf)

Version 2.11.2

Pull Requests

  • [ENHANCEMENT] PR #470 JsMultiTool and AutoBench Reporting Enhancements (@scottf)
  • [ENHANCEMENT] PR #468 duplicates and orphans (@scottf)
  • [FEATURE] PR #467 / #471 Heartbeat and Flow Control (@scottf)
  • [FIXED] PR #466 JsMultiTool Queue Fix (@scottf)

Version 2.11.1

JetStream Multi Tool enhancements and documentation

Version 2.11.0

Issue Bug Fixes

  • [FIXED] Issue #340 No connection possible when using multiple servers PR #455 (@scottf)

Pull Requests

  • [FIXED] PR #451 Header status improvements (@scottf)
  • [ENHANCEMENT] PR #452 handle no ack publishing (@scottf)
  • [ENHANCEMENT] PR #456 switched to jnats-server-runner library (@scottf)
  • [ENHANCEMENT] PR #446 improve cleanup of async responses (@scottf)

Issues General Closed

  • [NON ISSUE] Issue #298 NatsConnection does not report SSL error (@scottf)
  • [WILL NOT IMPLEMENT] Issue #272 Add ability to publish byte arrays with specified offset and length (@scottf)
  • [DOCUMENTED] Issue #316 Failure creating a subscription on a (fairly) new connection (@scottf)
  • [NON ISSUE] Issue #344 Performance issue when publishing to certain topics (@scottf)
  • [WILL NOT IMPLEMENT] Issue #373 Why not netty for networking? (@sasbury)
  • [PRE-RELEASE FEATURE REMOVED] Issue #388 In the jetstream subscriber examples... (@scottf)
  • [DOCUMENTED] Issue #402 Unable to connect to NATS server via Android Studio
  • [DOCUMENTED] Issue #445 NatsConnection.request(Message) does not use Message.replyTo (@scottf)
  • [DOCUMENTED] Issue #423 createContext() not documented (@scottf)

Version 2.10.0

  1. JetStream (message and management) support added.
  2. Miscellaneous bug fixes.
  3. Examples and benchmarks updated
  4. Improved unit tests with reusable scaffolding
  5. General Improvements

Non JetStream Pull Requests

  • [GENERAL] PR #358 Use OS Default SecureRandom (@scottf)
  • [BUILD] Issue #360 Automatic-Module-Name clause added to jar manifest. (@bjorndarri)
  • [BUILD] PR #365 gradle minor improvements, support windows (@scottf)
  • [TEST] PR #375 fix test failing because of timeout that aren't testing timing (@scottf)
  • [GENERAL] PR #380 Add a flushBuffer API (@ColinSullivan1)
  • [GENERAL] PR #383 nuid speed improvements (@scottf)
  • [GENERAL] PR #391 reconnect-jitter-handler-serverinfo-tests (@scottf)

Issue Features

  • [JETSTREAM] Issue #335 Add Message Headers (@scottf)
  • [GENERAL] Issue #336 Support no-responders (@scottf)
  • [JETSTREAM] Issue #353 Jetstream APIS (@ColinSullivan1) (@scottf)
  • [BUILD] Issue #355 Automatic module name (@bjorndarri)
  • [GENERAL] Issue #377 Add a flushBuffer Connection API (@ColinSullivan1) Added in PR #380
  • [JETSTREAM] Issue #393 Create Asynchronous Jetstream.Publish API (@scottf) Added in PR #398
  • [JETSTREAM] Issue #396 Jetstream Consumer Delete API (@scottf) Added in PR #408
  • [JETSTREAM] Issue #412 Add a JS management API to get consumer info (@scottf) Added in PR #413

Issue Bug Fixes

  • [FIXED] Issue #424 ERROR: Subject remapping requires Options.oldRequestStyle()... (@scottf)
  • [FIXED] Issue #345 "unable to stop reader thread" log message (@ColinSullivan1) Fixed in PR #427
  • [FIXED] Issue #310 NatsConnection.close unnecessarily sleeps for one second (@scottf)

Issues General

  • [COMMENTED] Issue #341 Why is a char[] more secure then a String for connection auth details? (@scottf)
  • [OTHER] Issue #384 Validations on expectedLastSeqence, expectedStream and expectedLastMsgId are not working for jetstream producer (fixed by nats-server PR #1787)

Version 2.8.0

  • [ADDED] #323 Nats.connect v2 credentials (@olicuzo)
  • [CHANGED] #320 Update MAINTAINERS.md (@gcolliso)
  • [FIXED] #318 Printing trace when NUID initialization takes long (@matthiashanel)
  • [FIXED] #327 Subject Remapping Fix (@brimworks)
  • [FIXED] #331 Close connection when flush fails during drain (@matthiashanel)
  • [FIXED] #330 Reconnect wait was not being honored (@ColinSullivan1)

Version 2.6.8

  • [FIXED] - #309 - Removed some debug printf statements
  • [CHANGED] - Allow disable reconnect buffer by using size of zero
  • [CHANGED] - Added option to set the max unsent size at the writer and fail or discard messages
  • [CHANGED] - Updated build.gradle to not fail if TRAVIS_BRANCH isn't set

Version 2.6.6

  • [FIXED] - #274 - Added a check to prevent double event notification
  • [CHANGED] - #276 - Updated TLS certs to match go client
  • [FIXED] - #275 - Updated connect to randomize with the same code as reconnect

Version 2.6.2, 2.6.3, 2.6.4 & 2.6.5

  • [FIXED] - problem with jars being built with jdk 11
  • [ADDED] - Automated deploy

Version 2.6.1

  • [FIXED] - #263 - Added server URLs to connect exception (not to auth exception)
  • [FIXED] - #262 - Added @deprecated as needed
  • [FIXED] - #261 - Added a static credentials implementation that uses char arrays
  • [FIXED] - #260 - Moved to nats-server from gnatsd for testing
  • [FIXED/CHANGED] - #259 - Double authentication errors from a server during reconnect attempts will result in the connection being closed.
  • [FIXED] - #257 - Added connection method to messages that come from subscriptions, dispatchers and requests
  • [FIXED] - #243 - Added check for whitespace in subjects and queue names
  • [FIXED] - Improved a couple flaky tests

Version 2.6.0

  • [FIXED] - cleaned up use of "chain" instead of "creds"
  • [FIXED] - #255 - added special ioexception when possible to indicate an authentication problem on connect
  • [FIXED] - #252 - deprecated strings for username/pass/token and use char arrays instead, required changing some other code to CharBuffer
  • [ADDED] - Openjdk11 to travis build and updated gradle wrapper to 5.5
  • [ADDED] - an option to trace connect timing, including a test and example
  • [FIXED/ADDED] - #197 - the ability to use a single dispatcher for multiple message handlers, including multiple subscriptions on a single subject

Version 2.5.2

  • [FIXED] - #244 - fixed an issue with parsing ipv6 addresses in the info JSON, added unit test for parser
  • [FIXED] - #245 - fixed a timing bug in nats bench, now subscribers start timing at the first receive
  • [FIXED/CHANGED] - #246 - fixed a confusing output from nats bench in CSV mode, now the test count and the total count are printed
  • [ADDED] - spring cache to git ignore file
  • [ADDED] - support for running nats bench with conscrypt

Version 2.5.1

  • [FIXED] - #239 - cleaned up extra code after SSL connect failure
  • [FIXED] - #240 - removed stack trace that was left from debugging
  • [FIXED] - #241 - changed method used to create an ssl socket to allow support for conscrypt/wildfly native libraries
  • [ADDED] - conscrypt flag to natsautobench to allow testing with native library, requires Jar in class path

Version 2.5.0

  • [CHANGED] added back pressure to message queue on publish, this may effect behavior of multi-threaded publishers so moving minor version

Version 2.4.5 & 2.4.6

  • Clean up for rename to nats.java

Version 2.4.4

  • [FIXED] - #230 - removed extra executor allocation
  • [FIXED] - #231 - found a problem with message ordering when filtering pings on reconnect, caused issues with reconnect in general
  • [FIXED] - #226 - added more doc about ping intervals and max ping
  • [FIXED] - #224 - resolved a latency problem with windows due to the cost of the message queues spinwait/lock
  • [CHANGED] - started support for renaming gnatsd to nats-server, full release isn't done so using gnatsd for tests still

Version 2.4.3

  • [FIXED] - #223 - made SID public in the message
  • [FIXED] - #227 - changed default thread to be non-daemon and normal priority, fixes shutdown issues
  • [FIXED] - minor issue in javadoc that showed up when building on windows
  • [ADDED] - test for fast pings and disconnect, duration.zero on nextMsg
  • [CHANGED] - accepted pull request to replace explicit thread creation with executor

Version 2.4.2

  • [FIXED] - #217 - added check to "ignore" exceptions from reader during drain
  • [CHANGED] - no longer call exception handler for "ignored" communication exceptions during close/drain after close occurs
  • [ADDED] - #209 - support for comma separated urls in connect() or server()
  • [FIXED] - #206 - incorrect error message when reconnect buffer is overrun
  • [CHANGED] - #214 - moved to an executor instead of 1-off threads
  • [FIXED] - #220 - an icky timing issue that could delay messages
  • [CHANGED] - added larger TCP defaults to improve network performance
  • [ADDED] - public method to create an inbox subject using the prefix from options
  • [FIXED] - #203 & #204 - Fixed a thread/timing issue with writer and cleaning pong queues

Version 2.4.1

  • [FIXED] - #199 - turns out we had to hard code the manifest to remove the private package

Version 2.4.0

  • [ADDED] - support for JWT-based authentication and NGS
  • [FIXED] - issue with norandomize server connect order, it was broken at some point
  • [FIXED] #199 - import of a private package
  • [FIXED] #195 - issue with "discovered" servers not having a protocol but we tried to parse as uri
  • [FIXED] #186, #191 - sneaky issue with connection reader not reseting state on reconnect
  • [ADDED] #192 - option to set inbox prefix, default remains the same
  • [FIXED] #196 - updated all the versions i could find, and added note in gradle file about them

Version 2.3.0

  • [BREAKING CHANGE] Replaced use of strings for seeds and public keys in NKey code to use char[] to allow better memory security.

Version 2.2.0

  • [ADDED] Support for NKeys, and nonce based auth

Version 2.1.2

  • [FIXED] #181 - issue with default pending limits on consumers not matching doc
  • [FIXED] #179 - added version variable for jars in build.gradle to make it easier to change
  • [ADDED] Support for UTF8 subjects

Version 2.1.1

  • [FIXED] Issue with version in Nats.java, also updated deploying.md with checklist
  • [FIXED] Fixed issue during reconnect where buffered messages blocked protocol messages

Version 2.1.0

  • [ADDED] Support for consumer or connection drain. (New API lead to version bump.)
  • [FIXED] Fixed an issue with null pointer when ping/pong and reconnect interacted poorly.

Version 2.0.2

  • [FIXED] In a cluster situation the library wasn't using each server's auth info if it was in the URI.

Version 2.0.1

  • [CHANGED] Request now returns a CompletableFuture to allow more application async options
  • [ADDED] Added back OSGI manifest information
  • [ADDED] getLastError method to connection
  • [ADDED/CHANGED] Implemented noEcho tests, and require the server to support noEcho if it is set

Version 2.0.0

  • [BREAKING CHANGE] Moved build to gradle
  • [BREAKING CHANGE] Ground up rewrite to simplify and address API issues, API has changed
  • [BREAKING CHANGE] Simplified connection API
  • [CHANGED] Removed external dependencies

Version 1.1-SNAPSHOT

2017-02-09 GitHub Diff

  • [FIXED] Flush wait interval (the amount of time the flusher waits before checking the flush queue) is once again set at 1ms.
  • [FIXED] Do not shuffle entire pool when adding URL from INFO
  • [ADDED] Connection name can now be accessed using Connection#getName()
  • [CHANGED] CI tests now run against both Oracle JDK 8 and OpenJDK 8

Version 1.0

2017-02-02 GitHub Diff

  • [ADDED] Nats.connect() and variants have been added as a preferred method for connecting to NATS. ConnectionFactory.createConnection() will also continue to be supported.
  • [ADDED] Connection#getServers() and Connection#getDiscoveredServers() APIs to match Go client
  • [ADDED] isTlsRequired() and isAuthRequired() to match Go client capabilities.
  • [CHANGED] Methods that previously threw TimeoutException now simply return null (for non-void methods) or throw IOException if their timeout elapses before they complete.
    • ConnectionFactory#createConnection()
    • ConnectionImpl#flush(int timeout)
    • SyncSubscription#nextMessage(int timeout) - returns null if the timeout elapses before a message is available.
  • [CHANGED] Several constant definitions have been moved to the Nats class.

Version 0.7.3

2016-11-01 GitHub Diff

  • FIXED #83 All thread pool executors are now properly shutdown by Connection#close().

Version 0.7.1

2016-10-30 GitHub Diff

  • [NEW API] Connection#publish(String subject, String reply, byte[] data, boolean flush) allows the caller to specify whether a flush of the connection's OutputStream should be forced. The default behavior for the other variants of publish is false. This was added to optimize performance for request-reply (used heavily in java-nats-streaming). The internal flush strategy of ConnectionImpl minimizes flush frequency by using a synchronized flusher thread to 'occasionally' flush. This benefits asynchronous publishing performance, but penalizes request-reply scenarios where a single message is published and then we wait for a reply.
  • NatsBench can now be configured via properties file (see src/test/resources/natsbench.properties)

Version 0.7.0

2016-10-19 GitHub Diff

  • [BREAKING CHANGE] SyncSubscription#nextMessage() and its variants now throw InterruptedException if the underlying poll/take operation is interrupted.
  • Fixed interrupt handling.
  • Removed Channel implementation in favor of directly using BlockingQueue.

Version 0.6.0

2016-10-11 GitHub Diff

  • Implemented asynchronous handling of INFO messages, allowing the client to process INFO messages that may be received from the server after a connection is already established. These asynchronous INFO messages may update the client's list of servers in the connected cluster.
  • Added proper JSON parsing via google/gson.
  • Cleaned up some threading oddities in ConnectionImpl
  • Moved async subscription threading mechanics into the Connection, similar to the Go client.
  • Fixed a number of inconsistencies in how subscription pending limits were handled.
  • Removed subscription pending limits from ConnectionFactory. These should be set on the Subscription using Subscription#setPendingLimits().
  • ConnectionImpl is now public, to avoid some issues with reflection in Java and reflective languages such as Clojure. Described further in #35 (special thanks to @mccraigmccraig).
  • #58 Updated NUID implementation to match the Go version
  • #48 Fixed an NPE issue in TCPConnectionMock when calling bounce() (affects tests only).
  • #26 Fixed a problem with AsyncSubscription feeder thread not exiting correctly in all cases.
  • Updated integration tests to more closely reflect similar Go tests.
  • Miscellaneous typo, style and other minor fixes.

Version 0.5.3

2016-08-29 GitHub Diff

  • Moved nats_checkstyle.xml out of src tree to avoid jar/bundle filtering

Version 0.5.2

2016-08-29 GitHub Diff

  • Depends on stable nats-parent-1.1.pom
  • Excludes nats_checkstyle.xml from jar/bundle
  • Downloads gnatsd binary for current arch/os to target/ for test phase
  • Housekeeping changes to travis-ci configuration

Version 0.5.1

2016-08-21 GitHub Diff

  • Fixed a problem with gnatsd 0.9.2 connect_urls breaking the client connect sequence. This field is now ignored.
  • Retooled the way that releases are shipped from Travis CI, using the deploy: clause and new scripts

Version 0.3.2

2016-08-20 GitHub Diff

  • Fixed a problem parsing Long from String on Android.

Version 0.5.0

2016-08-10 GitHub Diff

  • Reverted to Java 1.7 compatibility to avoid Android incompatibility
  • Fixed an issue that was preventing TLS connections from reconnecting automatically.
  • Fixed an issue with asynchronous subscriptions not terminating their feeder thread.
  • Exposed pending limits APIs
  • Updated examples to match Go client and added benchmark program
  • Integrated NATS parent POM
  • Integrated check style
  • Integrated maven-bundle-plugin to provide OSGI compliant java-nats bundle
  • Miscellaneous minor bug fixes and javadoc updates

Version 0.4.1

_2016-04-03 GitHub Diff

  • Removed a stray log trace statement in publish that was affecting performance.

Version 0.4.0

2016-03-29 GitHub Diff

  • Built on JDK 8
  • Added NUID (a java implementation of http://github.com/nats-io/nuid), an entropy-friendly UUID generator that operates ~40 ns per op
  • Connection#newInbox() now uses NUID to generate the unique portion of the inbox name
  • Added support for pending byte/msg limits for subscriptions:
  • Subscription#setPendingLimits(int msgs, int bytes)
  • Made the size of the Connection reconnect (pending) buffer configurable with ConnectionFactory setters and getters
  • Optimized parser performance
  • Optimized parser handling of large message payloads
  • ConnectionFactory will now construct a default URL by combining supplied host, port, user, and password if no URL is directly supplied.
  • Fixed a couple of issues with misnamed properties
  • Miscellaneous doc corrections/updates

Version 0.3.1

2016-01-18 Initial public release of java-nats, now available on Maven Central.

  • Added support for TLS v1.2
  • Numerous performance improvements
  • The DisconnectedEventHandler, ReconnectedEventHandler and ClosedEventHandler classes from the Alpha release have been renamed to DisconnectedCallback, ReconnectedCallback and ClosedCallback, respectively.
  • Travis CI integration
  • Coveralls.io support
  • Increased test coverage