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Changelog

Unreleased

New Features

  • Added new config socket_options to UDP, TCP and Websocket connectors to enable use of socket option SO_REUSEPORT
  • Added the chunk postprocessor for creating payloads as close to a configurable max_bytes as possible
  • Arithmetic expressions now error on overflows

Fixes

  • Fix udp_client connector connecting to IPv6 hosts.

Breaking Changes

  • Move no_delay config of tcp_server and ws_server to socket_options.TCP_NODELAY.

[0.13.0-rc.9]

New Features

  • Added std::datetime library for parsing, formatting and working with datetimes

[0.13.0-rc.7]

New Features

  • implement script enhancement RFC (initial state and port based scripts)

Fixes

  • Fix bug in local variable resolving when using expression-paths

Performance

  • Improve dogstatsd performance
  • Improve performance of std::array::flatten by roughly 30%

[0.13.0-rc.6]

Fixes

  • Fix windows based on interval not sending the correct event id when timing out

[0.13.0-rc.5]

Fixes

  • The Google BigQuery connector will now split requests that are longer than the allowed limit (10MB)

New Features

  • The GoogleBigQuery connector now accepts table_id metadata, to allow setting target table per event.

[0.13.0-rc.4]

Fixes

  • Fix pipeline DAG creation when pipeline has unused nodes (e.g. a stream, operator or script)
  • Fix possible hangs in http_client, kv and dns connectors when no pipelines is connected to their out port
  • Fix gbq_writer swallow errors for requests that have been successfully sent to gbq, but failed.
  • Fix systemd startup script

[0.13.0-rc.3]

New features

  • Add dogstatsd codec for Datadog DogStasD implementation

Fixes

  • Fix output of dns_client being empty for any lookup.

Breaking Changes

  • Remove $elastic._type field from elastic connector response events

[0.13.0-rc.2]

Fixes

  • Add clear error messages for pipelines for console in, pipeline out, pipeline in
  • Added a new port in ConnectInput and weaved them together
  • Added a new port in ConnectOutput and weaved them together
  • Fixed linking pipelines to pipelines
  • Fixed error reporting in ConnectOutput and ConnectInput functions
  • Fixed kv test cases

0.13.0-rc.1

Breaking Changes

  • Change gcs_streamer and s3_streamer to only ack events upon finished uploads.
  • cb connector config path changed to paths.
  • Introduce breaking change in kafka_consumer configuration, by adding mode.
  • Update grok to 0.2, optional patterns are now omitted no longer ""
  • Unify to url instead of endpoint for google and s3 connectors so they're in line with every other connector
  • Unify to urls for elastic connector
  • Unify to path for bench, kv and wal connector so it's in line with file
  • Rename s3_writer to s3_streamer

New features

  • Add gcl_writer Google Cloud Platform Cloud Logging connector for writing log entries, with in-flight concurrency support.
  • Add reverse functions and tests for arrays and strings, add sort test for arrays
  • Add a ClickHouse connector
  • Add a GCS streamer connector

Fixes

  • Fix tcp_server, ws_server and unix_socket_server to properly close sockets when a client disconnects.
  • Fix bug in the runtime, swallowing some event acknowledgements and fails for batched events from multiple streams
  • Fix custom metrics for kafka_consumer, kafka_producer not being reported in the requested interval
  • Fix metrics connector not emitting all metrics it did receive.
  • Fix invalid scope handling for flow definition default arguments
  • Fix elastic sink not acking events handled successfully if no source is connected.
  • Fix kafka_consumer possibly committing earlier offsets, thus replaying events that have already been handled.
  • Fix off-by-one error in kafka_consumer committing offsets, thus replaying the last committed event.
  • Allow kafka_consumer connector to reconnect upon more error conditions and avoid stalls.
  • Include flow alias in pipeline and connector aliases reported via metrics events and logging in order to deduplicate entries

0.12.4

Fixes

  • Fix startup startup script for systemd installations
  • Avoid hangs in elastic connector when not connected as source via its out or err port.
  • Default udp client bind ip to 0.0.0.0:0 instead of 127.0.0.1:0

New features

  • Add compression level for lz4, xz2 and zstd

0.12.3

Fixes

  • Don't fail unrecoverably when the connection to the server is lost in Google PubSub consumer.
  • Update bert operators to work with tremor 0.12

0.12.2

New features

  • Added the gpubsub_publisher connector
  • Added the gpubsub_consumer connector
  • Added new metadata options to elastic connector: version, version_type, retry_on_conflict, if_primary_term, if_seq_no

Fixes

  • Fix race condition leading to quiescence timeout when shutting down Tremor
  • Fix timeout config unit mismatch in qos::backpressure and qos::percentile operators. Changed to nanoseconds precision.
  • Update WAL operator to fix issue with overwriting first entries.

0.12.1

Fixes

  • Fix misbehaving stdio connector when stdio is a pipe
  • Fix Docker entrypoint script argument ordering
  • Fix id encoding for discord connector

0.12.0

New features

  • Add full TLS support for elastic connector (including client certificate auth)
  • Add several auth methods for elastic and HTTP connector (Basic Auth, Api-Key, Bearer Token, ...)
  • Add support for specifying client certificates with tls config for http_client and tcp_client connectors.
  • Add tremor new to create new template projects.
  • Support elastic.raw_payload for update
  • Add support for chunked requests and responses for the HTTP connectors
  • Add the gbq connector for Google BigQuery
  • Add support for tuple patterns inside of record patterns.
  • Refactor visitors to seperate walker and visitor and visit all nodes.
  • Add support for modular subqueries in Trickle
  • Add check_topic_metadata configuration flag to kafka source to bypass topic metadata fetch
  • port json! improvements to literal!
  • print names of failing tests
  • Add check_topic_metadata configuration flag to kafka source to bypass topic metadata fetch
  • port json! improvements to literal!
  • Add support for troy deployment language. The language adds the pipeline, connector, flow, links, connect, to, deploy and config reserved keywords. These are now reserved in the scripting and query languages and must now be escaped when they appear in event data. This is a breaking change in the query and script language dialects.
  • Add support for FLOAT4 and FLOAT8 serialization/deserialization to postgres connectors
  • Add std::path::try_default fn
  • Experimental ARM support
  • Add default => {...} and default "key" => "value" to patch
  • Add zstd pre- and post-processors #1100
  • Remove rental from Event #1031 #1037
  • Put event raw payload into Arc to improve cloning perf
  • Remove rental from the entire runtime #1037
  • Restructure operators and select to avoid transmutation #1024
  • Fix tremor-cli to use it's own binary when possible #1096
  • Restructure functions to avoid transmutation #1028
  • Update blackhole to print events / s #1129
  • Improve soundness and documentation of SRS code.
  • Add support for concatenating arrays #1113
  • Allow gcp headers to be included in rest offramp with auth: gcp
  • Add env source #1136
  • Remove need for emit_emtpy_window by automatic eviction for groups where no window holds data
  • Ensure all windows of a group are alligned and can not go out of sync
  • Box apropriately in the rest sink
  • replace macros with functions in gcp code
  • Add -q flag and clarify -v flag for unit tests
  • Add win::cardinality function
  • Backpressure now allows lossless (no discard) circuit breaker behaviour #1119
  • Allow functions, constants and expressions as roots for path lookups
  • Add the unix-socket source
  • Enabale automatic benchmakrs
  • Add the csv codec
  • Add the permissions option for setting the file mode for the unix-socket source
  • Tests can be run without their suite. #1238
  • Add the std::size module to convert sizes
  • Add custom function calls to constant folding
  • Integration test names are added as a tag so they can be run by name
  • integration tests low log stdout/stderr for before and after

Breaking Changes

  • the tremor api sub command in the cli has been removed.
  • the - is no longer a valid part of identifiers.
  • binaries now use _ to sepoerate type names as - is no longer a identifier.
  • changed naming for record object to avoid keywords like select and merge. New names are record.extract and record.combine.
  • command separators are now unified, both patch, match and for now use ; the same way the rest of the language does
  • in all definitional statements args now specifies interface arguments that are overwritable in the correspanding create statement, while with specifies non-overwritable configuration in both define and create statements - this unifies the use of with and args between trickle and troy
  • file connector no longer splits by lines - it now requires a preconnector
  • define for both troy and trickle now follow the same principle of define <type> <alias> from <source>
  • wal is no longer an operator but a connector
  • for the elastic connector indexes have not to be set on the batch not the individual event so one batch can only be to a single index.
  • metronome interval is now in nanoseconds (as all other timings)
  • Most connectors require a specified codec now instead of using JSON as a default
  • merge no longer treats null in the spec as a delete option but rather as a normal value
  • Combine all compression and decompression pre/postprocessors.

Fixes

  • Fix detection of *.troy files in entrypoint.sh causing duplicate configs to be loaded when using Kubernetes.
  • Fix a one-off error in the bench connector leading to it producing one event too much
  • Avoid acking events that failed while preprocessing or decoding using a codec.
  • Remove acknowledging events when dropped or sent to a dead end (e.g. unconnected port) as this was causing confusing and unwanted behaviour with error events
  • move EXIT connector to debug connectors to avoid shutting down tremor
  • Fix bug in grok extractor that would never return good matches
  • Properly terminate after tremor run ...
  • Fix the bench connector to actually stop after the given amount of events when iters is configured.
  • http headers to allow strings and arrays
  • fix the use of args in the with part of a create insode of a flow.
  • fix silent swallowing of unknown fields in connector definition.
  • Make otel severity_number optional: #1248
  • Don't allow duplicate stream names: #1212
  • Fix memory safety issue when using merge or patch with state as target and reassigning the resulting value to state #1217
  • Fix delayed event re-execution in case of errors in a branched pipeline
  • Skip instead of fail EQC on out of repo PRs
  • Ensure patch keys are strings to move runtime errors into the compiletime
  • Fix issue with the token " being presented as a tick in errors
  • Fix heredoc_start and heredoc_end showing up in error messages instead of """
  • Fix some errors in otel pb <-> json translation
  • Fix windowed queries emitting events with null metadata on tick
  • Fix sorting for artefacts
  • Fix issue where the test framework would generate reports without being asked for it #1072
  • Remove the need for eviction_period for time based windows
  • Remove dead code and unneeded allows in otel and gcp code
  • Fix test and suite names not being printed
  • Fix badly nested structure in unit tests
  • Fix bug in the unit testing framework that would ignore all tags
  • Fix the illogical structure of suites that required a doubly nested record
  • Fix -v flag
  • Fix issue with double counting of unit test stats
  • Fix issue with wrong script snippets being shown for unit tests
  • Fix argument order in test cases
  • Fix GCS go-auth token refresh
  • Fix create script syntax for aliased scripts with overridden params
  • Add benchmark names to benchmark tags
  • Kafka onramp: Remove failing metadata fetch in order to verify topic existance. Instead detect subscription errors and stop the onramp in that case.
  • Unix offramp: Add the missing StartStream message
  • tremor-script: Add more details about Unicode in the documentation of the string module
  • Fix hdr and dds aggregation function losing events when aggregating > 8192 events
  • Ensure merge can only happen on objects

0.11.12

Fixes

  • Unix onramp: Add the missing StartStream message to handle multiple connections correctly

0.11.10

Fixes

  • Fix windowed queries emitting events with null metadata on tick

0.11.9

Fixes

  • Kafka onramp: Remove failing metadata fetch in order to verify topic existance. Instead detect subscription errors and stop the onramp in that case.

0.11.8

Fixes

  • Fix hdr and dds aggregation function losing events when aggregating > 8192 events
  • Make otel severity_number optional: #1248

New Features

  • Add the unix-socket onramp

0.11.7

Fixes

  • Upgrade dependency on librdkafka to 1.6.1 #1228.

0.11.6

Fixes

  • Fix possible memory unsafety issue when using patch or merge on state #1217.

0.11.5

Fixes

  • Fix artefact sorting in tremor startup script

0.11.4

  • Update to clap 3, this forced some breaking changes:
    • tremor server run -f file1 file2 now is tremor server run file1 file2
    • tremor test -i i1 i2 -e e1 e2 is now tremor test -i i1 -i i2 -e e1 -e e2

New features

  • Add tests for patch feature in tremor-script #721
  • Add onramp for SSE (Server Sent Events) #885
  • Add raw flag in tremor-cli dbg #854

Fixes

  • Fix the Release archive and package build process
  • Replace preprocess from tremor-cli dbg with --preprocess option #1085

0.11.3

New features

  • Add tests for merge feature in tremor-script #721
  • Add support for receiving TLS encrypted data via TCP onramp.
  • Add support for sending TLS encrypted data via TCP offramp.

Fixes

  • Remove a number of transmutes
  • Catalog remaining transmutes with related tickets
  • Bump snmalloc-rs to 0.2.26 to ensure builds succeed on systems with libc < 2.25

0.11.2

New features

  • Add op key to KV offramp responses in order to differentiate responses by the command that triggered them
  • Change format of KV offramp responses to a more unified structure.
  • Add KnownKey::map_* functions to directly work on the Value::Objects inner HashMap, if available.
  • Add HEALTHCHECK to Dockerfiles
  • Improve printing for dot files
  • Scan sub directories of ${CFG_DIR} for config files.
  • Add offramp and onramp for AMQP with the lapin package.

Fixes

  • KV offramp sends error responses for each failed command
  • Ensure binding to first bind linked offramps to pipelines, then pipelines to offramps/onramps/pipeline, then onramps to pipelines to ensure events only start flowing when all downstreams are connected.
  • Fix empty record pattern to only match records.
  • Fix ws offramp not reconnecting after connection loss.
  • Run tests in tremor-cli bin
  • Switch operations of tremor dbg lex and tremor dbg preprocess as they did the job of the other.
  • Fix heredoc preprocessing, which was messing up error reporting
  • Fix false positives in cycle detection
  • Include cncf::otel stdlib sources in deb package
  • Add /usr/local/share/tremor to default TREMOR_PATH also for all packages as a well-known directory for custom tremor-script libraries and modules.
  • Record the partition number assigned during rebalancing when running Kafka.
  • Fix bug in HDR histogram implementation when using emit without reset.
  • Fix bug in mean that invalid values would be counted as part of the total number of values.
  • Avoid possible contraflow cycles via system::metrics pipeline, if a pipeline is connected to an output port of system::metrics pipeline.

0.11.1

New features

  • Add tremor_value::structurize convenience fn

  • Change qos::wal operator to only require one of max_elements or max_bytes (using both is still possible).

  • Add DNS sink

  • Add syslog codec.

  • Add $udp.host and $udp.port to allow controling udp packet destinations on a per event basis.

  • Deprecate udp.dst_* config, introduce udp.bind.* config instead.

  • Allow insights/contraflow events to traverse through multiple connected pipelines

  • Add GCP Cloud Storage linked sink connector.

  • Add textual-length-prefix pre and postprocessor.

  • Add GCP Pubsub sink and source connector.

Fixes

  • Inform docker builders that lack of resources may crash builds
  • Fix CI runners to work with caching
  • Fix dependencies for tremor-value and tremor-common
  • Fix docker entrypoint not forwarding arguments to tremor binary, unless -- is used before them
  • Fix match default clause only executing the last statement in the block.
  • Kafka back to async with a timeout on waiting
  • Fix qos::wal operator never cleaning up the last event from its storage
  • Fix generic::batch operator swallowing the transactional status of an Event
  • Fix windowed select queries not tracking the transactional status of an Event
  • Fix windowed select queries not tracking the Events that constitute an outgoing aggregated event
  • Avoid several offramps to swallow fail insights.
  • Send correlation metadata for send error events in elastic sink
  • Record the partition number assigned during rebalancing when running Kafka.

0.11.0

New features

  • CNCF OpenTelemetry source, sink and cncf::otel tremor-script library adds log, trace, metrics OpenTelemetry support
  • Fixes module path function resolution for tremor-cli doc tool to use unified path resolution
  • Removed the vsn.sh script which checks if the lockfile is up to date and replaces it with the --locked flag #798
  • Allow using '_' as seperators in numeric literals #645
  • Refactor kafka metadata variables to be under a single record $kafka.
  • Add support for Kafka message headers, available through the $kafka.headers metadata variable.
  • Add the cb offramp for testing upstream circuit breaker behaviour #779
  • Add the kafka onramp config retry_failed_events to acoid retrying failed events, and polling_interval to control how often kafka is polled for new messages if none were available previously #779
  • Add kv connector with the supported operations put, get, delete, scan, cas.
  • Add discord badge to README.md.
  • Handle signals and terminate properly on Ctrl+C in docker #806
  • Update to rust 1.50.0
  • Emit error events to the err port on exceeding concurrent requests limit for rest and elastic offramps.
  • Add the max_groups and emit_empty_windows settings on window definitions #828
  • Restrict event and event metadata references in the SELECT clause of a windowed select statement #828
  • Improve default visibility of tremor info logs from packages #850
  • Include the request info of a response for a linked rest offramp, available through the $response.request metadata variable.
  • Emit warnings when a window with emit_empty_windows without guards is used.
  • Extend match to handle top-level ~ extractors in match #834
  • Extend match to allow more assign expressions (i.e. case a = ~ glob|snot*| => or case v = _ =>)
  • Match pipeline improvements: tree search for ==, grouping based on shared keys, re-ordering of exclusive case statements
  • Optimize glob matches of the form glob|snot*| or glob|*badger| to cheaper prefix and suffix checks
  • Remove warnings for match w/o default if a _ case or a v = _ case exists
  • Add --exprs-only to dbg ast to not show metadata
  • Add Delete and Update to ES sink #822
  • Add more metadata to Kafka source #874
  • Update to simd-json 0.4
  • Add tests covering basic operations and string interpolation for tremor-script#721
  • Add offramp and onramp for NATS.io.
  • Add a stdin onramp.
  • Add tests covering arrays and records for tremor-script#721
  • Support for non caching UDP sink #900

Fixes

  • Fix kafka onramp hanging with no message in the queue, leading to delayed offset commits #779
  • Fail the kafka onramp if any of the configured topics could not be subscribed to #779
  • Tremor no longer requires a home dir for operations that do not need a config #782
  • Add performance section to PR template.
  • Fix markdown for discord link.
  • Fix lalrpop builds when extra folders exist.
  • Refactor operator metrics collection to eliminate clones in most cases.
  • Fix systemd spec file to load tremor files in /etc/tremor/config #784
  • Do not crash when we can not execute a config file #792
  • Sort the artefacts while running the benchmarks so that the benchmark run is more deterministic #825
  • Remove the bench_pipe_passthrough_csv benchmark #825
  • Fix a bug in the test bench command that was giving false negatives when the benchmarks were failing #816
  • Fix time based windows to not emit empty windows anymore and to not error if they contain event references #828
  • Do not commit an empty topic-partition-list in the kafka onramp and improve logging for better debugging
  • Fix kafka consumer offset lag of at least 1 continually by using offset + 1 when committing.
  • Fix issue where binary not (!) was not getting lexed correctly #833
  • Fix missing ack/fail insight events with offramps that dont support guaranteed delivery (e.g. udp, stdout) #870
  • Fix wrong error message for misconfigured UDP sinks
  • the api-host argument is renamed from -h to -a to resolve a conflict with -h being used for help

0.10.2

Fixes

  • Ensure blaster sends all events from the source #759
  • Allow the use of const and custom functions using const in select queries #749
  • Print hygenic errors when invalid trickle files are loaded in server run -f ... #761
  • Ensure elastic offramp does not issue empty bulk requests.
  • Avoid sending empty batches from the batch operator.
  • Ensure elastic offramp includes event payload in every error response.

New features

  • Add discord connector to allow communicating with the discord API

0.10.1

Fixes

  • Update tremor-value to 0.2 to include binary changes and thus unbreak the 0.10 tremor-script crate

0.10.0

Breaking Changes

  • String interpolation is now done via #{..} instead of {}. { no longer needs to be escaped, but \#{ needs an escape for literal #{.
  • Emit tumbling windows based on size immediately when they are full. #731
  • Emit tumbling windows based on time interval also when no event comes in but the interval passed #731
  • Elasticsearch offramp elastic: change the config value endpoints to nodes #732

New features

  • Default to thin-lto for all builds (prior this was only done in docker)
  • Automatically generate rpms and tarballs for releases.
  • Update rust to 1.49.0
  • Build deb packages
  • Statically link openssl
  • elastic sink now supports linked transports #715

Fixes

  • rewrite string interpolation to fix #726

0.9.4

New features

  • Extract simd_json::BorrowedValue into tremor specific tremor-value to allow extension of the type system.
  • Introduce Binary datatype and binary semi literals << 1, 2, event, (3 + 7) >>
  • Introduce base64 module for encoding and decoding binary to base64 encoded strings
  • introduce binary module to work with binary data

Fixes

  • Terminate pipeline creation when a node already exists with the given name #650
  • Fix visibility of pipeline metrics #648
  • Fix panic upon usage of postgres ramps due to incompatbility with tokio and async-std runtime. #641
  • Fix missing newlines when error line doesnt end with a newline #676
  • Fix possible panic in random::integer and random::float when used with values <= 0. #679

0.9.3

New features

  • Add prefix and raw config options to stdout and stderr offramps #637

Fixes

  • Make use of postprocessors in stdout, stderr and udp sinks #637
  • Allow to express minimal value of i64 as int literal #629
  • Fix scientific float literals (e.g. 1.0e-5) #629
  • Output errors to stderr on tremor run invocation. #629
  • Output more helpful errors for runtime errors (like accessing non-existing fields) #629
  • Fix gelf preprocessor to accept valid (unchunked) gelf messages #628
  • Fix memory access issue for large objects

0.9.2

New Features

  • Add docker image, and action for training docker image #576
  • Performance enhancements #608

Breaking Changes

  • Standardize error responses for tremor api #559
  • Remove empty event filtering from lines preprocessor logic #598

Fixes

  • Fix possible crashes from todo macro in tcp sink #573
  • Fix linked offramp not shutting down after binding is deleted #582
  • Fix slow kafka sink when queue.buffering.max.ms is set to > 0 #585
  • Fix string and heredoc errors with and without interpolation #595
  • Add hygienic error feedback for tremor run #620
  • Fix Kafka SmolRuntime hang #558
  • Remove array access to prevent possible runtime panics #574, #598
  • Update CLI: -i allows selecting a subset now #580
  • Allow using err for errors in tremor run #592
  • Update to rust toolchain 1.48