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This changelog is intended for community Beat developers. It covers the major breaking changes to the internal APIs in the official Beats and changes related to developing a Beat like code generators or fields.yml. Only the major changes will be covered in this changelog that are expected to affect community developers. Each breaking change added here should have an explanation on how other Beats should be migrated.

Note: This changelog documents the current changes which are not yet present in an actual release.

Beats version HEAD

The list below covers the major changes between 7.0.0-rc2 and master only.

Breaking changes

  • Move Fields from package libbeat/common to libbeat/mapping. 11198

  • For "metricbeat style" generated custom beats, the mage target GoTestIntegration has changed to GoIntegTest and GoTestUnit has changed to GoUnitTest. 13341

  • Build docker and kubernetes features only on supported platforms. 13509

  • Need to register new processors to be used in the JS processor in their init functions. 13509

  • The custom beat generator now uses mage instead of python, mage GenerateCustomBeat can be used to create a new beat, and mage vendorUpdate to update the vendored libbeat in a custom beat. 13610

  • Altered all remaining uses of mapval to use the renamed and enhanced version: go-lookslike instead, which is a separate project. The mapval tree is now gone. 14165

  • Move light modules to OSS. 14369

  • Deprecate test flags, generate and update_expected, in favor of data. 15292

  • Python 3 is required now to run python tests and tools. 14798

  • The type memqueue.Broker is no longer exported; instead of memqueue.NewBroker, call memqueue.NewQueue (which provides the same public interface). 16667

  • The disk spool types spool.Spool and spool.Settings have been renamed to the internal types spool.diskSpool and spool.settings. 16693

  • queue.Eventer has been renamed to queue.ACKListener 16691

  • Require logger as first parameter for outputs.transport.transport#ProxyDialer and outputs.elasticsearch.client#BulkReadItemStatus. 16761

  • The libbeat/outputs/transport package has been moved to libbeat/common/transport. 16734

  • The libbeat/outputs/tls.go file has been removed. All exported symbols in that file (libbeat/outputs.) are now available as libbeat/common/tlscommon.. 16734

  • The newly generated Beats are using go modules to manage dependencies. 16288

  • Extract Elasticsearch client logic from outputs/elasticsearch package into new esclientleg package. 16150

  • Rename queue.BufferConfig.Events to queue.BufferConfig.MaxEvents. 17622

  • Remove queue.Feature and replace queue.RegisterType with queue.RegisterQueueType. 17666

  • Introduce APM libbeat instrumentation. Publish method on Client interface now takes a Context as first argument. 17938

  • The way configuration files are generated has changed to make it easier to customize parts of the config without requiring changes to libbeat config templates. Generation is now fully based on Go text/template and no longer uses file concatenation to generate the config. Your magefile.go will require a change to adapt the devtool API. See the pull request for more details. 18148

Bugfixes

  • Stop using mage:import in community beats. This was ignoring the vendorized beats directory for some mage targets, using the code available in GOPATH, this causes inconsistencies and compilation problems if the version of the code in the GOPATH is different to the vendored one. Use of mage:import will continue to be unsupported in custom beats till beats is migrated to go modules, or mage supports vendored dependencies. 13998 14162

Added

  • Make the behavior of clientWorker and netClientWorker consistent when error is returned from publisher pipeline

  • Metricset generator generates beta modules by default now. 10657

  • The beat.Event accessor methods now support @metadata keys. 10761

  • Assertion for documented fields in tests fails if any of the fields in the tested event is documented as an alias. 10921

  • Support for Logger in the Metricset base instance. 11106

  • Filebeat modules can now use ingest pipelines in YAML format. 11209

  • Prometheus helper for metricbeat contains now Namespace field for prometheus.MetricsMappings 11424

  • Update Jinja2 version to 2.10.1. 11817

  • Reduce idxmgmt.Supporter interface and rework export commands to reuse logic. 11777,https://github.com/elastic/beats/pull/12065[12065],https://github.com/elastic/beats/pull/12067[12067],https://github.com/elastic/beats/pull/12160[12160]

  • Update urllib3 version to 1.24.2 11930

  • Add libbeat/common/cleanup package. 12134

  • New helper to check for leaked goroutines on tests. 12106

  • Only Load minimal template if no fields are provided. 12103

  • Add new option IgnoreAllErrors to libbeat.common.schema for skipping fields that failed while converting. 12089

  • Deprecate setup cmds for template and ilm-policy. Add new setup cmd for index-management. 12132

  • Use the go-lookslike library for testing in heartbeat. Eventually the mapval package will be replaced with it. 12540

  • New ReporterV2 interfaces that can receive a context on Fetch(ctx, reporter), or Run(ctx, reporter). 11981

  • Generate configuration from mage for all Beats. 12618

  • Add ClientFactory to TCP input source to add SplitFunc/NetworkFuncs per client. 8543

  • Introduce beat.OutputChooses publisher mode. 12996

  • Ensure that beat.Processor, beat.ProcessorList, and processors.ProcessorList are compatible and can be composed more easily. 12996

  • Add support to close beat.Client via beat.CloseRef (a subset of context.Context). 13031

  • Add checks for types and formats used in fields definitions in fields.yml files. 13188

  • Makefile included in generator copies files from beats repository using git archive instead of cp. 13193

  • Strip debug symbols from binaries to reduce binary sizes. 12768

  • Compare event by event in testadata framework to avoid sorting problems 13747

  • Added a default_field option to fields in fields.yml to offer a way to exclude fields from the default_field list. 14262 14341

  • supported-versions.yml can be used in metricbeat python system tests to obtain the build args for docker compose builds. 14520

  • Fix dropped errors in the tests for the metricbeat Azure module. 13773

  • New mage target for Functionbeat: generate pkg folder to make manager easier. 15880

  • Add support for MODULE environment variable in mage goIntegTest in metricbeat to run integration tests for a single module. 17147

  • Add support for a TEST_TAGS environment variable to add tags for tests selection following go build tags semantics, this environment variable is used by mage test targets to add build tags. Python tests can also be tagged with a decorator (@beat.tag('sometag')). 16937 17075

  • Add fields validation for histogram subfields. 17759

  • Add IP* fields to fields.yml generator script in Filebeat. 17998 18256