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CHANGES.txt
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0.10.0b2 (2015-11-20)
=====================
Backwards Incompatibilities
---------------------------
* `DecoderRunner` interface changed `SetSendFailure` to `SetFailureHandling`.
Features
--------
* Allow TcpOutput to re-establish the connection after a configurable number
of successfully delivered messages.
* Added `set_hostname` option to UdpInput configuration (#1668).
* Added `linux_netdev` and `linux_netstat` decoders (#1712).
* Improved error output for ElasticSearchOutput HTTP failures.
* Added `log_decode_failures` config value to decoders.
* Adder `log_flags` to hekad config, to control the prefix for STDOUT and
STDERR logs.
Bug Handling
------------
* Fixed issue where ElasticSearchOutput was trying to send zero length requests
(#1783).
* Fixed race condition in ElasticSearchOutput (#1786).
* AMQPInput `Run` method now returns an error when the input channel closes but
`Stop` hasn't been called to successfully trigger restarts (#1757).
* Fixed error where restarting plugins were losing specified configuration
(#1756).
* Fixed config error where global `max_pack_idle` setting was the wrong type
and was being ignored (#1778).
* Fixed race condition in InputRunner's default deliverer initialization.
* Set hostname correctly in the Graylog decoder (#1663).
* Add sample rate support for gauge type in StatsdInput.
* Fixed some cases where SandboxDecoder wasn't correctly setting
`pack.TrustMsgBytes` to false when needed.
* Fixed broken queue rolling and added test.
* Force ElasticSearch index name to lower case, as required by ElasticSearch.
* Fixed default buffer config values.
* Updated docker configuration so docker build works again (#1634).
* Add generic json lua sandbox decoder (#1651).
* Fixed bug where a SandboxInput configured with a `ticker_interval` would
get stuck in an infinite loop on shutdown (#1705).
* Fixed race condition in the BufferReader's queue file lookup code (#1639).
* Changes in StatAccumInput, FileOutput, TcpInput, ProcessDirectoryInput tests
to minimize intermittent Travis failures.
* Ensure the response is read until it is complete in the HttpOutput plugin.
Previously, the deferred Body.Close() may have been called on incomplete
responses. This resulted in the connections not returning to the client's
Transport connection pool.
* Fixed panic that was occurring when loading a config file or directory that
exists but which registers no plugins (#1597).
* Delay start up when a buffered plugin's buffer is at capacity to give the
back-pressure time to resolve (#1738).
* Fixed bug where LogStreamerInput would sometimes loop infinitely reading the
same file over and over when reading gzipped log files.
0.10.0b1 (2015-08-07)
=====================
Backwards Incompatibilities
---------------------------
* `PluginHelper.PipelinePack` method now returns `(*PipelinePack, err)` values
instead of just `*PipelinePack`.
Features
--------
* Allow multiple sandbox module directories to be specified (#1525).
* Add Nginx stub status lua sandbox decoder
* Add Nginx stub status lua sandbox decoder.
* Added support for SIGUSR2 signal for use when Heka is wedged, triggers a Heka
pipeline report to the console, abort and serialize of all sandboxes, and a
shutdown.
* InputRunner and router's `Inject` methods each now return an error that can
be checked to verify successful message injection.
* Added `SplitStreamNullSplitterToEOF` to SplitterRunner interface so input
plugins can avoid generating messages with whatever happens to come back from
a `Read()` call.
* Validate the buffer max_file_size is greater than MAX_RECORD_SIZE (#1623).
Bug Handling
------------
* Validate the buffer max_file_size is greater than MAX_RECORD_SIZE (#1623).
* Fixed ProcessInput hangs when splitter is defined (#1620, #1644).
* `heka.all-report` and `heka.memstat` messages are now protobuf encoded before
being injected into the router (#1659).
* Fixed ProcessInput not getting process's full output when NullSplitter is in
use (#1645).
0.10.0b0 (2015-07-13)
=====================
Backwards Incompatibilities
---------------------------
* Major overhaul of filter and output plugin APIs to support disk buffering
(#1378).
* `queue_max_buffer_size` and `queue_full_action` config options for TcpOutput
and ElasticSearchOutput are now moved to `max_buffer_size` and `full_action`
in the `buffering` subsection (#1378).
* Go 1.4 now required for building.
* Deprecated the read_next_field() sandbox API; it is targeted for removal in
0.11.0 (#1602).
* Removed unused PipelinePack.Decoded attribute.
* LogOutput will write data to stdout instead of stderr (#1515).
* Using strftime literals for filenames during rotation in FileOutput plugin
(#1469).
* Implemented strftime format codes in: filenames in FileOutput plugin,
ESJsonEncoder, ESLogstashV0Encoder, Payload encoder (#1469, #1508).
* The package created by 'make deb' creates an "heka" user and ships an init
script and a systemd unit.
* The 'make deb' target requires fakeroot and debhelper to be installed.
* SplitterRunner interface now provides a `Done` method that should be called
whenever the splitter is no longer needed.
* `"Fields"` choice for the `fields` setting renamed to `"DynamicFields"` for
both ESJsonEncoder and ESLogstashV0Encoder.
Features
--------
* Added support for `write_message` to delete fields when passed nil values.
* Added a timer_event_on_shutdown configuration option for Filter/Output
sandboxes (#1460).
* Added `replace_dot` setting to StatFilter.
* A protobuf encoding of the current message is now always stored in
pack.MsgBytes prior to injection into the message router (#265).
* ProtobufEncoder now just copies the pack.MsgBytes into a new byte slice and
returns that.
* Added Linux CPU Stats Decoder and CPU Stats Filter.
* Centralized common functions used by the Schema Carbon Line Encoder and
Schema InfluxDB Line Encoder into new ts_line_protocol and field_util modules.
* Added a new sandbox encoder, Schema Carbon Line Encoder, which provides
support for converting fields in a Heka message to metrics formatted to
send to Carbon/Graphite.
* Added a new sandbox encoder, Schema InfluxDB Line Encoder, which updates
compatibility of sending data in Heka message fields to InfluxDB 0.9.0+
write API. It is required to use this encoder when integrating Heka with an
InfluxDB 0.9.0+ instance as the API to commit metrics has changed. This
encoder was also updated to use the line protocol which is now the default
series format for the write API.
* Added support for abstract Unix domain sockets to the UdpInput.
* Added support for `can_exit` to inputs (defaults to false, except on
ProcessDirectoryInput spawned processes where it defaults to true)
* Added `field_mappings` setting to the ESJsonEncoder allowing custom names for
Heka message fields in ElasticSearch.
* Termination messages are now generated for SandboxFilters that fail
initialization by a SandboxManagerFilter.
* Added alert_throttle setting to HTTP status graph filter.
* Added DockerEventInput.
* Added splitters to the reports displayed by Heka after SIGUSR1 signal.
* Added `graphite` module with helpers allowing to generate graphite metrics
for counters and timeseries (#1461).
* Added Basic Auth and API key authentication to HttpListenInput (#1533).
* Added SSL/TLS support to HttpListenInput (#1534)
* Allow to overwrite ContainerName using a Container environment variable from
within the Docker container for the DockerLogInput. (#1545)
* Allow extracting environment variables from a Docker container to use as
fields for the DockerLogInput. (#1569)
* Dashboard now shows sandbox plugins in alphabetical order.
* Added 'dynamic_fields' config to ESJsonEncoder for selecting a subset of
Fields values
Bug Handling
------------
* Fixed visibility of synchronous decoders in reports (#1312).
* Fixed hang on SandboxFilter termination (#1509)
* More ProcessInput/ProcessDirectoryInput retry logic fixes (#1412 & #1418).
* ProcessInput fixed to no longer leak decoder goroutines when reconfigured
via ProcessDirectoryInput-driven config changes (#1444).
* Check configuration, ticker_interval in Stat Accumulator Input must be
greater than 0 (#1474).
* Switch from unmaintained `crowdmob` fork of GoAMZ dependency to `AdRoll`
(#1458).
* Added ability to reconnect after lost connection in `heka-flood` (#1536).
* Respect ElasticSearch URL path (#1558).
0.9.3 (2015-??-??)
==================
Bug Handling
------------
* Correctly honor "user-agent" heading config in HttpInput (#1520).
* Removed state from PluginMaker to remove race conditions during plugin
construction (#1532).
* Get decoder lock before cleaning up decoders during pipeline shutdown to
avoid race condition panics during exit (#1531).
0.9.2 (2015-04-22)
==================
Bug Handling
------------
* Added bounds check for truncated inputs lines to StatsdInput.
* Fixed ElasticSearch recovery after full queue when `queue_full_action` is
set to "drop" or "block".
* Fixed TcpOutput recovery after full queue when `queue_full_action` is set to
"drop" or "block" (#1484).
* Fixed bug where LogstreamerInput wasn't honoring `oldest_duration` setting
(#1437).
* ElasticSearch payload encoder will ensure there is a newline in the
end of the payload in order for the bulk API to work correctly (#1457).
* Fix a gzipped file seeking in logstreamer may cause an OOM exception.
* Fixed config parsing typo bug in heka-logstreamer command (#1436).
* Always check for decoder existence when a decoder is specified for an input
plugin (#1439).
* Check `IsStoppable()` on all input, filter, output plugins if they error at
startup time, only shut down Heka if false.
* Fixed typo causing panic in AMQPInput when splitter returns an error
(#1453).
* Handle chunked error responses in http_output.
* ElasticSearchOutput buffering now only retries messages when it's clear that
the problem related to failed communication with the ElasticSearch server
(#1401).
* Added handling of incomplete/trailing data for SplitBytes() method in
SplitterRunner (#1455)
0.9.1 (2015-03-13)
==================
Features
--------
* Added configurable max_message_size to heka-cat.
* Added `count` setting to TokenSplitter to allow splitting on every Nth
instance of the given delimiter.
* Added `deliver_incomplete_final` setting to SplitterRunner.
* Added `max_message_size` setting to UdpOutput.
Bug Handling
------------
* Fix the message matcher parser to clear the yySymType structure on each call
(#1409).
* Protect read_message("raw") from reading an empty pack.MsgBytes (#1405).
* Moved `SetSplitterRunner` out of the config's MakeRunner and into the
`NewSplitterRunner` function to make sure a splitter always has access to a
SplitterRunner if needed.
* Fixed SplitterRunner buffer readPos so it only increments when a read call
doesn't return an error (#1367).
* Ensured plugin list file is closed after writing to it in Dashboard plugin.
* Fixed exiting / restart behavior for ProcessInput to match documentation
(#1395).
* UdpOutput drops message if its size exceeds allowed UDP data size (#1393).
0.9.0 (2015-02-25)
==================
Backwards Incompatibilities
---------------------------
* Major overhaul of Heka's configuration loading code. This doesn't impact
most plugins, it's only a breaking change for plugins that happen to
instantiate and manage the lifecycles of other embedded plugins, e.g.
MultiDecoder, ProcessDirectoryInput, SandboxManagerFilter.
* All inputs now support `decoder`, `synchronous_decode`, and
`send_decode_failures` config options, automatically extracted by Heka's
config system.
* InputRunner now handles message decoding and delivery to the router,
according to the specifications of the input's configuration. This is
accomplished either directly via the `Deliver` method or, in cases where
decoding might need to happen in separate goroutines, through `Deliverer`
objects available from the `NewDeliverer` method.
* Hekad and all clients started using stdout for informational messages and
stderr for error messages.
* Stats Accum Input treats gauge inputs as float64 rather than int64 to match
statsd spec and other statsd implementations (#850).
* Introduction of Splitter plugins, accompanied by major changes to how input
plugins work to support the use of Splitter plugins. (#424)
* TcpInput and UdpInput now set a non-protobuf encoded message's Type field to
the configured input plugin name instead of the hard-coded string
"NetworkInput".
Bug Handling
------------
* Fix the shutdown hang caused by a Filter/Output plugin failure (#1324).
* Fix the RPM dependency errors on Centos7 (#1311).
* Don't output empty messages when use_framing = true (#1326).
* KafkaInput uses the oldest offset available instead of zero when no
checkpoint file exists and the offset method is set to manual. KafkaInput
also correctly closes the checkpoint file before removing it when it is
invalid (#1325).
* Handle empty byte fields in the sandbox interface (#1284).
* Reset header when discarding valid but oversized messages (#1221).
* Prevent the protobuf stream encoder from creating messages over
MAX_MESSAGE_SIZE (#1204).
* AMQPOutput now uses defined constants for delivery mode instead of hard
coded (and wrong) integer values (#1235).
* Hekad now respects --config parameter and loads default config path
instead of printing help and exit (#1239).
* MessageProtoParser now handles EOF gracefully, and returns all
complete records up to the end of the stream without having to
use GetRemainingData() (#1305).
* HttpListenInput no longer URL unescapes the HTTP request body (#1124).
* SmtpOutput now encodes email subject when necessary (#1277).
* All config files are now pre-loaded before any of the config is actually
loaded to prevent default plugins from being registered for each separate
config file, possibly overriding custom config.
Features
--------
* Added decode_message to the sandbox API (#1344).
* Added a SandboxInput plugin (#1333).
* Added a SandboxOutput plugin (#1303).
* `heka/plugins/amqp` package now exposes `GetAmqpHub` and `NewAMQPDialer`
functions for use by external packages.
* Added heartbeat monitoring sandbox filter plugin.
* Include the new lua_sandbox with support for shared library modules.
* Allow the sandbox process_message function to set the last error string
when it returns (#1191).
* Improve the sandbox inject_* error messages (#1156).
* Added ability to specify unit type and aggregation methods for stats graph
filter.
* Added option (immediate_start) to start process immediately in ProcessInput
(#1131).
* Added `hostname` setting to global `[hekad]` config options to allow
overriding the hostname value provided by Go's `os.Hostname` call (#1123).
* Added 'connect_timeout' option in ElasticSearch output plugin.
* Slightly improve error output in ElasticSearch plugin.
* Added support for HTTP authentication to ElasticSearchOutput.
* TcpOutput's disk buffering now supports specification of a max buffer size
and an action to take if the max size is reached, from 'shutdown', 'drop',
or 'block' (#1110).
* Added `send_interval` setting to SmtpOutput.
* Added `timestamp` format setting to ESLogstashV0Encoder (#1142).
* LogstreamerInput now uses first two "magic" bytes to identify gzip files
instead of relying on `.gz` suffix.
* Added on-disk buffering to ElasticSearchOutput. It is enabled by default.
* Added TLS support to ElasticSearchOutput (#1259).
* Added ability for HttpListenInput to capture specified HTTP request headers
and write them as message fields.
* Added ability for Statsd input handler to treat a malformed stat line
one at time without skipping all the "good" stats in a multi-line input
(more like statsd itself).
* Added `message_interval` setting support to heka-flood test configuration.
* Added `cert_path` setting for TLS support to DockerLogInput.
* Added new fields to messages generated by HttpListenInput, including
RemoteAddr, Path, EnvVersion, Hostname (the name of the server that
handled the request), and Host (the host to which the client sent the
request) (#1328).
* Added `hostname_keep` option to RsyslogDecoder (#1338).
* Added an option to Schema InfluxDB Encoder to send the data to InfluxDB as
a list of series rather than the default of a single series for all fields
in the message.
* Added an option to Schema InfluxDB Encoder that excludes all base fields
from being sent to InfluxDB to reduce the network traffic and storage
demands if these fields aren't useful.
* Added `read_only` setting to AMQPInput to support read-only users.
* Added ability to specify MAX_MESSAGE_SIZE via configuration file of hekad
and heka-flood (#1208).
* Changed default plugin_chansize setting from 50 to 30 (#1242).
0.8.3 (2015-01-08)
==================
Bug Handling
------------
* Fixed LogstreamerInput to use a separate DecoderRunner for every
LogstreamInput created, rather than sending all of the streams through a
single decoder.
0.8.2 (2015-01-06)
==================
Bug Handling
------------
* Fix rsyslog sandbox decoder test to use current year and location for
timestamp parsing, since syslog timestamp format makes that assumption.
* Ensure that geoip_decoder is not included in release binaries.
0.8.1 (2014-12-17)
==================
Bug Handling
------------
* Fix leaky file descriptor bug on http_output.go.
* Only stamp PipelinePack diagnostics in cases when a pack actually matches a
message matcher, instead of for every matcher every time (#1167).
* StatsdInput allows to specify (via max_msg_size option) size of message read
from UDP (#1165).
* AMQPOutput now recycles packs even when a publish error causes the output to
exit / restart (#1178).
* Fixed HttpOutput TLS section parsing (#1163).
* Fixed LogstreamInput extraneous journal saves that caused high disk IO
when EOF is reached.
0.8.0 (2014-10-29)
==================
Backwards Incompatibilities
---------------------------
* Audited the use of Logger and Type headers on internal message (#1024). These
changes may break some existing message matchers with regards to
plugin/sandbox termination messages.
* Sandbox decoder linux_cpustats has been renamed to linux_loadavg and the
corresponding filter cpustats was renamed to loadavg (#1094).
* ESLogstashv0 encoder will now set the @type field to match the ES record
type specified in the `type_name` setting. This is Logstash behaviour in
V0. You can revert back to the old method with `use_message_type = true`
Bug Handling
------------
* linux_diskstats.lua will now parse a line with no leading space (#1141).
* Protect globals.Stopping with a RWMutex.
* Added support for `fields` config setting to ESLogstashV0Encoder; it was
already documented, but hadn't been implemented (#1096).
* Fixed deadlock race condition in AMQPOutput shutdown sequence (#824).
Features
--------
* Added Kafka Input/Output plugins (#1148).
* Optimized prefix/suffix testing in the message matcher (#1040).
* LogstreamerInput now supports seekjournal file hashing for files that are
less than 500 bytes in length; hash is generated against file contents with
0 bytes prepended to make 500 bytes of hash content (#972).
* Support environment variables in config files (#1023).
* Add Dockerfiles and example Docker usage to repo
* Encoders can now return (nil, nil) to express that they've swallowed the
input message without generating any output.
* SandboxEncoder now supports return value of -2 from the process_message call
to specify that no output is being generated.
* Added schema_influx.lua encoder.
* Added CBUF Librato Encoder.
* Added option to disable re-using TCP connections to the ElasticSearch output
* Added separate env loading file and support for NUM_JOBS env var to Windows
build (#971).
* Added DockerLogInput (issue #1092).
* Added support for "Epoch", "EpochMilli", "EpochMicro", and "EpochNano"
timestamp formats to the time parsing code used by the Payload*Decoder
plugins (#963).
* Added ability to drop big message entirely or to keep first part of it (#1134)
0.7.3 (2014-10-28)
==================
Bug Handling
------------
* Fail gracefully on LogstreamerInput missing `file_match` setting (#1105).
* Fixed issue where ProcessInput wasn't propagating environment variables and
working directory to repeatedly run (vs. one time, long running) processes
(#1108).
* UdpInput now removes a Unix datagram socket file at shutdown time if one is
created at startup.
* Fixed issue with keeping previous EOF state in LogStreamer (#1119).
* ProcessInput now honors documented restart behavior (#1117).
0.7.2 (2014-10-01)
==================
Bug Handling
------------
* Fail more gracefully if user doesn't specify a scheme in the server URL for
the ElasticSearchOutput (#1069).
* Correctly compute http timeout interval for ElasticSearchOutput when using
HTTP indexing.
* Fixed issue w/ inaccurate payload sizes in heka-flood.
* Allow severity to be modified by the MessageTemplate logic for use in
ScribbleDecoder (#1084).
* Render pack diagnostic idle time in seconds (as specified) instead of
nanoseconds.
* Prevent orphaned matchers from remaining in the router's matcher lists in
cases where a filter or output registered in one TOML file overrides a
filter or output of the same name in an earlier TOML file.
0.7.1 (2014-09-02)
==================
Bug Handling
------------
* Fixed handling of TcpInput and TcpOutput keep_alive_period default value
handling, and added docs (#1054).
* Fixed OSX lua_sandbox build error.
* Fixed load ordering of nested MultiDecoders (#1045).
0.7.0 (2014-08-27)
==================
Backwards Incompatibilities
---------------------------
* Switched to using fork of gomock, import location changed from
`code.google.com/p/gomock` to `github.com/rafrombrc/gomock`.
* Move *GlobalConfigStruct out of pipeline package's global namespace, it is
now stored as an attribute on PipelineConfig. Any code that used to call
pipeline.Globals() now must instead access *PipelineConfig.Globals. The
`WantsPipelineConfig` interface has been introduced to give plugins access
to the active *PipelineConfig if it's needed in the ConfigStruct or Init
methods (#951).
* Removed deprecated `pipeline.GetHekaConfigDir` API call, which has been
replaced by `PrependBaseDir` and `PrependShareDir` for a few versions
now.
* Removed the regular expression template support from the message matcher
(issue #960).
* Updated the AMQP input / output configuration values to use underscore
delimited words for long config options (issue #953).
* LogstreamerInput now errors on nonexistent `log_directory` instead of
creating the folder (issue #1066).
Bug Handling
------------
* Fixed the MySQL slow query grammar to handle logs with no newline.
* Fixed packet tracking idle packs error output formatting.
* Prevent panics during shutdown when a restarting plugin has been restarted
(issue #957).
* Added support for a Logstreamer symbolically linked log_directory root
(issue #741).
* Fixed lots of race conditions in the tests.
* Eliminated race condition in use of global AMQPHub in AMQP input / output
plugins (#953).
Features
--------
* Added StatMetric Influx Encoder.
* Added RstEncoder.
* Added support for '__ignore_root' tag in add_external_plugin to allow
external packages to be added which do not have any .go files
in their root directory (issue #955).
* Switched from using goprotobuf to gogoprotobuf with marshal_all and
unmarshal_all extensions for significant performance increase.
* Added stats graph sandbox filter to make it easier to generate graphs of
statsd / graphite metrics (issue #966).
* Added support for the majority of repository URI formats when cloning external
Go packages (issue #937).
* Added the ability to test for field existence in message matcher (issue #958).
* Added support to ESJSonEncoder and ESLogstashV0Encoder to properly encode
field arrays.
* Added a filter to monitor all process message failures (issue #948).
* Added UdpOutput.
* Added IrcOutput.
* Added support for filter and output plugins to optionally exit without
causing Heka to shutdown via config option.
* Added support for custom HTTP Headers in HttpListenInput and DashboardOutput.
0.6.1 (2014-08-27)
==================
Bug Handling
------------
* CarbonOutput using UDP transport now uses multiple packets to send stats
data to Carbon server when output would be longer than the 64KiB max size
for UDP packets (issue #1035).
* StatsdInput now trims all whitespace around incoming stat names instead of
just trailing newlines (issue #1011).
* Fixed silent failures in ElasticSearchOutput bulk indexing operations.
* Fixed permanent loss of HTTP connection in certain cases when ElasticSearch
has been restarted (issue #1008).
* Fixed default sandbox script type when loading dynamic plugins.
0.6.0 (2014-07-09)
==================
Backwards Incompatibilities
---------------------------
* Go 1.3 now required for building.
* Changed handling of message stream framing. Before stream framing was
presumed to always be required when encoding with protocol buffers, and not
required when using other encodings. Now all outputs support an optional
`use_framing` setting that will determine whether or not framing will be
applied when using the OutputRunner's Encode method (issue #922).
* All files in a config directory that do not end in ".toml" will now be
ignored and not loaded as a part of the Heka configuration (issue #750).
* Removed the PayloadJsonDecoder which is replaced by the Lua sandbox cjson
module (issue 826).
* Removed LogfileInput and LogfileDirectoryManagerInput which were replaced
by LogstreamerInput in 0.5.0 (issue 914).
* MultiDecoder no longer sets prepends name of the decoder instance to the
message type value for every message. This was impacting performance, is
almost never what is needed, and is almost always overwritten by the nested
subdecoders anyway.
* MultiDecoder now has a `subs` option that refers to other top level decoder
config definitions, instead of nested sub-configs and a separate `order`
option specifying the order. This makes for less typing and the ability to
reuse decoder definitions as both standalone decoders and across multiple
MultiDecoders (issue #485).
* ElasticSearchOutput now uses an Encoder plugin instead of MessageFormatters.
Created ESJsonEncoder, ESLogstashV0Encoder, and ESPayloadEncoder
(implemented as a SandboxEncoder in es_payload.lua) to replicate prior
formatter behavior.
* Changed the Lua sandbox API. inject_message is no longer overloaded, output
has been renamed to add_to_payload, and inject_payload has been introduced.
* Changed TcpOutput, FileOutput, and LogOutput to use Encoder plugins for
output formatting instead of bespoke formatting implementations.
* The rsyslog decoder now further parses the %SYSLOGTAG% variable. The
fields.syslogtag no longer exists and is replaced by fields.programname and
message.Pid (issue #677).
* Removed no-longer-used 'decoder_poolsize' global config setting.
Bug Handling
------------
* Fixed the ElasticSearchOutput to always use UTC times in the bulk API header
(issue #504).
* Fixed the SandboxDecoder panic when failing the Decode() after successfully
injecting a message (issue #910).
* StatsdInput no longer spins up a new goroutine for each stat (issue #359).
* MultiDecoder no longer prevents shutdown if a nested SandboxDecoder crashes
during startup (issue #896).
* MultiDecoder using `cascade_strategy = "all"` now passes all generated packs
to all nested decoders instead of skipping the remainder if an earlier pack
in the sequence fails to decode (issue #896).
* MultiDecoder no longer tries to recycle the original pack, leaving that job
to the DecoderRunner as intended (issue #896).
* Updated SmtpOutput to use a slice instead of a map to generate SMTP headers
so the order will remain consistent when using Go 1.3 or later.
* Use FindProcess instead of syscall.Kill to make the 'pid_file' configuration
setting work on Windows (issue #807)
* Fix the SandboxFilter ReportMsg panic on termination/shutdown (issue #816)
* MultiDecoder with no 'order' set now fails on init instead of panicking on
first message.
* Fix panic on SIGUSR1 caused by no reports in a given plugin category (issue
#832).
* Fix file_match config of plugin logstreamer_input (issue #893).
* StatFilter now correctly handles values from integer or float fields (issue
#612).
Features
--------
* Added general purpose HttpOutput (issue #820).
* Added message processing stat reporting to the MultiDecoder for each
subdecoder and in aggregate (issue #719).
* Added memory statistics to the Heka report output, for self monitoring.
* Added a message type configuration option to the rsyslog decoder (issue #907).
* Added `elasticsearch` Lua module to generate BulkAPI index JSON (issue #875).
* Added support for Lua sandbox preservation versioning (issue #701).
* Added support for unix datagram sockets to the UdpInput using net "unixgram"
(issue #790).
* Add LogstreamInput seekjournal reporting to dashboard output (issue #445).
* Added a HyperLogLog library to the Lua sandbox using the Redis
implementation http://antirez.com/news/75.
* Added an alert encoder to make the alert messages easier to read.
* Introduced Encoder plugin type (issue #417).
* Added a bloom filter to the Lua sandbox and created a unique items filter.
* Turned the MySQL slow query log examples into a deployed decoder and filter.
* Added an Nginx error log decoder (issue #785)
* Added the ability to preserve the webserver log line in message payload
(issue #784)
* Added the optional 'pid_file' configuration setting (issue #777).
* Add anomaly, alert, annotation modules (issue #677)
* Added 'sample_denominator' global config setting to allow tweaking the
sample interval when computing timing of certain operations, replacing prior
hard-coded DURATION_SAMPLE_DENOMINATOR constant (issue #625).
* Added an Apache access log decoder based on the Apache 'LogFormat'
configuration directive.
* Added BufferedOutput. Extracts the queuing functionality out of TcpOutput.go
into a general purpose lib for use in any output module. Callers get
messages buffered to disk while another goroutine consumes and forwards
data. Any errors encountered can cause the sending goroutine to backoff and
resend data.
* Added http_timeout to elasticsearch output to prevent slow or stale
connections from holding up the flow. (issue #769)
* Add query parameters to the Message as Fields in the HttpListenInput
* Add QueueTTL option to AMQPInput to allow specifying message expiration.
* Added optional tls sub-section to AMQPInput and AMQPOutput for configuring
AMQPS TLS settings.
* Add detection and handling of gzipped files to LogstreamerInput (issue #648).
* Added optional TCP Keep-Alive parameters to TcpInput/TcpOutput plugins.
0.5.2 (2014-05-16)
==================
Bug Handling
------------
* FileOutput no longer panics when using `format = "text"` and payload is nil
(issue #843).
* Fix SandboxDecoder pass-through case so decoders that only use write_message
and not inject_message will emit messages correctly (issue #844).
* Fixed TcpInput so it will only override the default delimiter for a
RegexpParser if a delimiter is specified in the config.
* Fix the FileOutput panic when HUP'ed. Modified the CheckWritePermission
utility function to use a unique filename for each check. (issue #808)
* Terminated plugins are now removed from the SandboxManager quota (issue
#774).
* Fixed SIGUSR1 triggered text report to stdout to work with updated
heka.all-report JSON data structure (issue #762).
* MultiDecoder now uses message.GetType() instead of Message.Type so
emitted message type will be generated correctly (issue #761).
* LogstreamerInput no longer causes Heka to fail to start on empty or
whitespace-only journal files (issue #755).
* The cbufd_host_aggregator filter now properly reclaims expired hosts.
* Pull in a new lua_sandbox to fix JSON encoding of empty strings in the
sandbox plugin output() call.
* Escape regexp meta characters (notably '\') to prevent a panic in the LogstreamerInput on Windows
0.5.1 (2014-03-18)
==================
Bug Handling
------------
* Skip *.bak, *.tmp, *~, and .files in a config dir as a non-breaking band-aid
until we require an explicit naming convention in 0.6 (see issue #750).
* heka-logstreamer command now supports config directories in addition to
single config files, just like hekad itself (issue #742).
* Logstreamer package's NewLogstreamSet function no longer lowercases the
match part names when constructing match translation maps since the
PopulateMatchParts method doesn't actually expect the names to be
lowercased.
* Added support for use of "missing" value in Logstreamer translation maps to
allow users to place missing values at the end of the list instead of the
beginning (issue #735).
0.5.0 (2014-03-06)
==================
Backwards Incompatibilities
---------------------------
* ProcessInput no longer supports a separate'name' config setting, it uses the
specified plugin name from the TOML section header like all of the other
plugins.