CHANGELOG.md

v1.14

Release v1.14.6 - 2022/03/31

Enhancement

• Enable server plugins to specify socket-option SO_LINGER fluent#3644
• Add --umask command line parameter fluent#3671 fluent#3679

Bug fixes

• Fix metric name typo fluent#3630 fluent#3673
• Apply modifications in pipeline to the records being passed to @ERROR label fluent#3631
• Fix wrong calculation of retry interval fluent#3640 fluent#3649 fluent#3685 fluent#3686
• Support IPv6 address for rpc_endpoint in system config fluent#3641

Misc

• CI: Support Ruby 3.1 except Windows fluent#3619
• Switch to GitHub Discussions fluent#3654
• Fix CHANGELOG.md heading styles fluent#3648
• Declare null_value_pattern as regexp fluent#3650

Release v1.14.5 - 2022/02/09

Enhancement

• Add support for "application/x-ndjson" to in_http fluent#3616
• Add support for ucrt binary for Windows fluent#3613

Bug fixes

• Don't retry when retry_max_times == 0 fluent#3608
• Fix hang-up issue during TLS handshake in out_forward fluent#3601
• Bump up required ServerEngine to v2.2.5 fluent#3599
• Fix "invalid byte sequence is replaced" warning on Kubernetes fluent#3596
• Fix "ArgumentError: unknown keyword: :logger" on Windows with Ruby 3.1 fluent#3592

Release v1.14.4 - 2022/01/06

Enhancement

• in_tail: Add option to skip long lines (max_line_size) fluent#3565

Bug fix

• Incorrect BufferChunkOverflowError when each event size is < chunk_limit_size fluent#3560
• On macOS with Ruby 2.7/3.0, out_file fails to write events if append is true. fluent#3579
• test: Fix unstable test cases fluent#3574 fluent#3577

Release v1.14.3 - 2021/11/26

Enhancement

• Changed to accept http_parser.rb 0.8.0. http_parser.rb 0.8.0 is ready for Ractor. fluent#3544

Bug fix

• in_tail: Fixed a bug that no new logs are read when enable_stat_watcher true and enable_watch_timer false is set. fluent#3541
• in_tail: Fixed a bug that the beginning and initial lines are lost after startup when read_from_head false and path includes wildcard '*'. fluent#3542
• Fixed a bug that processing messages were lost when BufferChunkOverflowError was thrown even though only a specific message size exceeds chunk_limit_size. fluent#3553 fluent#3562

Misc

• Bump up required version of win32-service gem. newer version is required to implement additional fluent-ctl commands. fluent#3556

Release v1.14.2 - 2021/10/29

IMPORTANT: This release contain the fix for CVE-2021-41186 - ReDoS vulnerability in parser_apache2. This vulnerability is affected from Fluentd v0.14.14 to v1.14.1. We recommend to upgrade Fluentd to v1.14.2 or use patched version of parser_apache2 plugin.

Enhancement

• fluent-cat: Add --event-time option to send specified event time for testing. fluent#3528

Bug fix

• Fixed to generate correct epoch timestamp even after switching Daylight Saving Time fluent#3524
• Fixed ReDoS vulnerability in parser_apache2. This vulnerability is caused by a certain pattern of a broken apache log.

Release v1.14.1 - 2021/09/29

Enhancement

• in_tail: Added file related metrics. These metrics should be collected same as fluent-bit's in_tail. fluent#3504
• out_forward: Changed to use metrics mechanism for node statistics fluent#3506

Bug fix

• in_tail: Fixed a crash bug that it raise undefined method of eof? error. This error may happen only when read_bytes_limit_per_second was specified. fluent#3500
• out_forward: Fixed a bug that node statistics information is not included correctly. fluent#3503 fluent#3507
• Fixed a error when using @include directive It was occurred when http/https scheme URI is used in @include directive with Ruby 3. fluent#3517
• out_copy: Fixed to suppress a wrong warning for ignore_if_prev_success It didn't work even if a user set it. fluent#3515
• Fixed not to output nanoseconds field of next retry time in warning log Then, inappropriate labels in log are also fixed. (retry_time -> retry_times, next_retry_seconds -> next_retry_time) fluent#3518

Release v1.14.0 - 2021/08/30

Enhancement

• Added enable_input_metrics, enable_size_metrics system configuration parameter This feature might need to pay higher CPU cost, so input event metrics features are disabled by default. These features are also enabled by --enable-input-metrics,--enable-size-metrics command line option. fluent#3440
• Added reserved word @ROOT for getting root router. This is incompatible change. Do not use @ROOT for label name. fluent#3358
• in_syslog: Added send_keepalive_packet option fluent#3474
• in_http: Added cors_allow_credentials option. This option tells browsers whether to expose the response to frontend when the credentials mode is "include". fluent#3481 fluent#3491

Bug fix

• in_tail: Fixed a bug that deleted paths are not removed from pos file by file compaction at start up fluent#3467
• in_tail: Revived a warning message of retrying unaccessible file fluent#3478
• TLSServer: Fixed a crash bug on logging peer host name errors fluent#3483

Misc

• Added metrics plugin mechanism The implementations is changed to use metrics plugin. In the future, 3rd party plugin will be able to handle these metrics. fluent#3471 fluent#3473 fluent#3479 fluent#3484

v1.13

Release v1.13.3 - 2021/07/27

Bug fix

• in_tail: Care DeletePending state on Windows fluent#3457 fluent#3460
• in_tail: Fix some pos_file bugs. Avoid deleting pos_file entries unexpectedly when both pos_file_compaction_interval and follow_inode are enabled. Use bytesize instead of size for path length. fluent#3459
• in_tail: Fix detecting rotation twice on follow_inode. fluent#3466

Misc

• Remove needless spaces in a sample config file fluent#3456

Release v1.13.2 - 2021/07/12

Enhancement

• fluent-plugin-generate: Storage plugin was supported. fluent#3426
• parser_json: Added support to customize configuration of oj options. Use FLUENT_OJ_OPTION_BIGDECIMAL_LOAD, FLUENT_OJ_OPTION_MAX_NESTING, FLUENT_OJ_OPTION_MODE, and FLUENT_OJ_OPTION_USE_TO_JSON environment variable to configure it. fluent#3315

Bug fix

• binlog_reader: Fixed a crash bug by missing "fluent/env" dependency. fluent#3443
• Fixed a crash bug on outputting log at the early stage when parsing config file. This is a regression since v1.13.0. If you use invalid '@' prefix parameter, remove it as a workaround. fluent#3451
• in_tail: Fixed a bug that when rotation is occurred, remaining lines will be discarded if the throttling feature is enabled. fluent#3390
• fluent-plugin-generate: Fixed a crash bug during gemspec generation. It was unexpectedly introduced by #3305, thus this bug was a regression since 1.12.3. fluent#3444

Misc

• Fixed the runtime dependency version of http_parse.rb to 0.7.0. It was fixed because false positive detection is occurred frequently by security scanning tools. fluent#3450

Release v1.13.1 - 2021/06/25

Bug fix

• out_forward: Fixed a race condition on handshake It's caused by using a same unpacker from multiple threads. fluent#3405 fluent#3406
• in_tail: Fixed to remove too much verbose debugging logs It was unexpectedly introduced by #3185 log throttling feature. fluent#3418
• Fixed not to echo back the provides path as is on a 404 error There was a potential cross-site scripting vector even though it is quite difficult to exploit. fluent#3427

Misc

• Pretty print for Fluent::Config::Section has been supported for debugging fluent#3398
• CI: Dropped to run CI for Ruby 2.5 fluent#3412

Release v1.13.0 - 2021/05/29

Enhancement

• in_tail: Handle log throttling per file feature fluent#3185 fluent#3364 fluent#3379
• Extend to support service discovery manager in simpler way fluent#3299 fluent#3362
• in_http: HTTP GET requests has been supported fluent#3373
• The log rotate settings in system configuration has been supported fluent#3352

Bug fix

• Fix to disable trace_instruction when RubyVM::InstructionSequence is available. It improves compatibility with truffleruby some extent. fluent#3376
• in_tail: Safely skip files which are used by another process on Windows. It improves exception handling about ERROR_SHARING_VIOLATION on Windows. fluent#3378
• fluent-cat: the issue resending secondary file in specific format has been fixed fluent#3368
• in_tail: Shutdown immediately & safely even if reading huge files Note that skip_refresh_on_startup must be enabled. fluent#3380

Misc

• example: Change a path to backup_path in counter_server correctly fluent#3359
• README: Update link to community forum to discuss.fluentd.org fluent#3360

v1.12

Release v1.12.4 - 2021/05/26

Bug fix

• in_tail: Fix a bug that refresh_watcher fails to handle file rotations fluent#3393

Release v1.12.3 - 2021/04/23

Enhancement

• plugin_helper: Allow TLS to use keep-alive socket option fluent#3308

Bug fix

• parser_csv, parser_syslog: Fix a naming conflict on parser_type fluent#3302
• in_tail: Fix incorrect error code & message on Windows fluent#3325 fluent#3329 fluent#3331 fluent#3337
• in_tail: Fix a crash bug on catching a short-lived log fluent#3328
• storage_local: Fix position file corruption issue on concurrent gracefulReloads fluent#3335
• Fix incorrect warnings about ${chunk_id} with out_s3 fluent#3339
• TLS Server: Add peer information to error log message fluent#3330

Misc

• fluent-plugin-generate: add note about plugin name fluent#3303
• fluent-plugin-generate: Use same depended gem version with fluentd fluent#3305
• Fix some broken unit tests and improve CI's stability fluent#3304 fluent#3307 fluent#3312 fluent#3313 fluent#3314 fluent#3316 fluent#3336
• Permit to install with win32-service 2.2.0 on Windows fluent#3343

Release v1.12.2 - 2021/03/29

Enhancement

• out_copy: Add ignore_if_prev_successes fluent#3190 fluent#3287
• Support multiple kind of timestamp format fluent#3252
• formatter_ltsv: suppress delimiters in output fluent#1666 fluent#3288 fluent#3289

Bug fix

• in_tail: Expect ENOENT during stat fluent#3275
• out_forward: Prevent transferring duplicate logs on restart fluent#3267 fluent#3285
• in_tail: Handle to send rotated logs when mv is used for rotating fluent#3294
• fluent-plugin-config-format: Fill an uninitialized instance variable fluent#3297
• Fix MessagePackEventStream issue with Enumerable methods fluent#2116

Misc

• Add webrick to support Ruby 3.0 fluent#3257
• Suggest Discource instead of Google Groups fluent#3261
• Update MAINTAINERS.md fluent#3282
• Introduce DeepSource to check code quality fluent#3286 fluent#3259 fluent#3291
• Migrate to GitHub Actions and stabilize tests fluent#3266 fluent#3268 fluent#3281 fluent#3283 fluent#3290

Release v1.12.1 - 2021/02/18

Enhancement

• out_http: Add headers_from_placeholders parameter fluent#3241
• fluent-plugin-config-format: Add --table option to use markdown table fluent#3240
• Add --disable-shared-socket/disable_shared_socket to disable ServerEngine's shared socket setup fluent#3250

Bug fix

• ca_generate: Fix creating TLS certification files which include broken extensions fluent#3246
• test: Drop TLS 1.1 tests fluent#3256
• Remove old gem constraints to support Ruby 3

Misc

• Use GitHub Actions fluent#3233 fluent#3255

Release v1.12.0 - 2021/01/05

New feature

• in_tail: Add follow_inode to support log rotation with wild card fluent#3182
• in_tail: Handle linux capability fluent#3155 fluent#3162
• windows: Add win32 events alternative to unix signals fluent#3131

Enhancement

• buffer: Enable metadata comparison optimization on all platforms fluent#3095
• fluent-plugin-config-formatter: Handle service_discovery type fluent#3178
• in_http: Add add_query_params parameter to add query params to event record fluent#3197
• inject: Support unixtime_micros and unixtime_nanos in time_type fluent#3220
• Refactoring code fluent#3167 fluent#3170 fluent#3180 fluent#3196 fluent#3213 fluent#3222

Bug fix

• output: Prevent retry.step from being called too many times in a short time fluent#3203

v1.11

Release v1.11.5 - 2020/11/06

Enhancement

• formatter: Provide newline parameter to support CRLF fluent#3152
• out_http: adding support for intermediate certificates fluent#3146
• Update serverengine dependency to 2.2.2 or later

Bug fix

• Fix a bug that windows service isn't stopped gracefuly fluent#3156

Release v1.11.4 - 2020/10/13

Enhancement

• inject: Support unixtime_millis in time_type parameter fluent#3145

Bug fix

• out_http: Fix broken data with json_array true fluent#3144
• output: Fix wrong logging issue for ${chunk_id} fluent#3134

Release v1.11.3 - 2020/09/30

Enhancement

• in_exec: Add connect_mode parameter to read stderr fluent#3108
• parser_json: Improve the performance fluent#3109
• log: Add ignore_same_log_interval parameter fluent#3119
• Upgrade win32 gems fluent#3100
• Refactoring code fluent#3094 fluent#3118

Bug fix

• buffer: Fix calculation of timekey stats fluent#3018
• buffer: fix binmode usage for prevent gc fluent#3138

Release v1.11.2 - 2020/08/04

Enhancement

• in_dummy renamed to in_sample fluent#3065
• Allow regular expression in filter/match directive fluent#3071
• Refactoring code fluent#3051

Bug fix

• buffer: Fix log message for chunk_limit_records case fluent#3079
• buffer: Fix timekey optimization for non-windows platform fluent#3092
• cert: Raise an error for broken certificate file fluent#3086
• cert: Set TLS ciphers list correcty on older OpenSSL fluent#3093

Release v1.11.1 - 2020/06/22

Enhancement

• in_http: Add dump_error_log parameter fluent#3035
• in_http: Improve time field handling fluent#3046
• Refactoring code fluent#3047

Bug fix

• in_tail: Use actual path instead of based pattern for ignore list fluent#3042
• child_process helper: Fix child process failure due to SIGPIPE if the command uses stdout fluent#3044

Release v1.11.0 - 2020/06/04

New feature

• in_unix: Use v1 API fluent#2992

Enhancement

• parser_syslog: Support any time_format for RFC3164 string parser fluent#3014
• parser_syslog: Add new parser for RFC5424 fluent#3015
• Refactoring code fluent#3019

Bug fix

• in_gc_stat: Add use_symbol_keys parameter to emit string key record fluent#3008

v1.10

Release v1.10.4 - 2020/05/12

Enhancement

• out_http: Support single json array payload fluent#2973
• Refactoring fluent#2988

Bug fix

• supervisor: Call File.umask(0) for standalone worker fluent#2987
• out_forward: Fix ZeroDivisionError issue with weight 0 fluent#2989

Release v1.10.3 - 2020/05/01

Enhancement

• record_accessor: Add set method fluent#2977
• config: Ruby DSL format is deprecated fluent#2958
• Refactor code fluent#2961 fluent#2962 fluent#2965 fluent#2966 fluent#2978

Bug fix

• out_forward: Disable linger_timeout setting on Windows fluent#2959
• out_forward: Fix warning of service discovery manager when fluentd stops fluent#2974

Release v1.10.2 - 2020/04/15

Enhancement

• out_copy: Add plugin_id to log message fluent#2934
• socket: Allow cert chains in mutual auth fluent#2930
• system: Add ignore_repeated_log_interval parameter fluent#2937
• windows: Allow to launch fluentd from whitespace included path fluent#2920
• Refactor code fluent#2935 fluent#2936 fluent#2938 fluent#2939 fluent#2946

Bug fix

• in_syslog: Fix octet-counting mode bug fluent#2942
• out_forward: Create timer for purging obsolete sockets when keepalive_timeout is not set fluent#2943
• out_forward: Need authentication when sending tcp heartbeat with keepalive fluent#2945
• command: Fix fluent-debug start failure fluent#2948
• command: Fix regression of supervisor's worker and --daemon combo fluent#2950

Release v1.10.1 - 2020/04/02

Enhancement

• command: --daemon and --no-supervisor now work together fluent#2912
• Refactor code fluent#2913

Bug fix

• in_tail: Fix pos_file_compaction_interval parameter type fluent#2921
• in_tail: Fix seek position update after compaction fluent#2922
• parser_syslog: Fix regression in the with_priority and RFC5424 case fluent#2923

Misc

• Add document for security audit fluent#2911

Release v1.10.0 - 2020/03/24

New feature

• sd plugin: Add SRV record plugin fluent#2876

Enhancement

• server: Add cert_verifier parameter for TLS transport fluent#2888
• parser_syslog: Support customized time format fluent#2886
• in_dummy: Delete suspend parameter fluent#2897
• Refactor code fluent#2858 fluent#2862 fluent#2864 fluent#2869 fluent#2870 fluent#2874 fluent#2881 fluent#2885 fluent#2894 fluent#2896 fluent#2898 fluent#2899 fluent#2900 fluent#2901 fluent#2906

Bug fix

• out_forward: windows: Permit to specify linger_timeout fluent#2868
• parser_syslog: Fix syslog format detection fluent#2879
• buffer: Fix available_buffer_space_ratio calculation fluent#2882
• tls: Support CRLF based X.509 certificates fluent#2890
• msgpack_factory mixin: Fix performance penalty for deprecation log fluent#2903

v1.9

Release v1.9.3 - 2020/03/05

Enhancement

• in_tail: Emit buffered lines as unmatched_line at shutdown phase when emit_unmatched_lines true fluent#2837
• Specify directory mode explicitly fluent#2827
• server helper: Change SSLError log level to warn in accept fluent#2861
• Refactor code fluent#2829 fluent#2830 fluent#2832 fluent#2836 fluent#2838 fluent#2842 fluent#2843

Bug fix

• buffer: Add seq to metadata that it can be unique fluent#2824 fluent#2853
• buffer: Use Tempfile as binmode for decompression fluent#2847

Misc

• Add .idea to git ignore file fluent#2834
• appveyor: Fix tests fluent#2853 fluent#2855
• Update pem for test fluent#2839

Release v1.9.2 - 2020/02/13

Enhancement

• in_tail: Add pos_file_compaction_interval parameter for auto compaction fluent#2805
• command: Use given encoding when RUBYOPT has -E fluent#2814

Bug fix

• command: Accept RUBYOPT with two or more options fluent#2807
• command: Fix infinite loop bug when RUBYOPT is invalid fluent#2813
• log: serverengine's log should be formatted with the same format of fluentd fluent#2812
• in_http: Fix NoMethodError when OPTIONS request doesn't have 'Origin' header fluent#2823
• parser_syslog: Improved for parsing RFC5424 structured data in parser_syslog fluent#2816

Release v1.9.1 - 2020/01/31

Enhancement

• http_server helper: Support HTTPS fluent#2787
• in_tail: Add path_delimiter to split with any char fluent#2796
• in_tail: Remove an entry from PositionaFile when it is unwatched fluent#2803
• out_http: Add warning for retryable_response_code fluent#2809
• parser_syslog: Add multiline RFC5424 support fluent#2767
• Add TLS module to unify TLS related code fluent#2802

Bug fix

• output: Add EncodingError to unrecoverable errors fluent#2808
• tls: Fix TLS version handling in secure mode fluent#2802

Release v1.9.0 - 2020/01/22

New feature

• New light-weight config reload mechanizm fluent#2716
• Drop ruby 2.1/2.2/2.3 support fluent#2750

Enhancement

• output: Show better message for secondary warning fluent#2751
• Use ext_monitor gem if it is installed. For ruby 2.6 or earlier fluent#2670
• Support Ruby's Time class in msgpack serde fluent#2775
• Clean up code/test fluent#2753 fluent#2763 fluent#2764 fluent#2780

Bug fix

• buffer: Disable the optimization of Metadata instance comparison on Windows fluent#2778
• outut/buffer: Fix stage size computation fluent#2734
• server: Ignore Errno::EHOSTUNREACH in TLS accept to avoid fluentd restart fluent#2773
• server: Fix IPv6 dual stack mode issue for udp socket fluent#2781
• config: Support @include/include directive for spaces included path fluent#2780

v1.8

Release v1.8.1 - 2019/12/26

Enhancement

• in_tail: Add path_timezone parameter to format path with the specified timezone fluent#2719
• out_copy: Add copy_mode parameter. deep_copy parameter is now deprecated. fluent#2747
• supervisor: Add deprecated log for inline_config fluent#2746

Bug fixes

• parser_ltsv: Prevent garbage result by checking label_delimiter fluent#2748

Release v1.8.0 - 2019/12/11

New feature

• Add service discovery plugin and out_forward use it fluent#2541
• config: Add strict mode and support default/nil value in ruby embedded mode fluent#2685

Enhancement

• formatter_csv: Support nested fields fluent#2643
• record_accessor helper: Make code simple and bit faster fluent#2660
• Relax tzinfo dependency to accept v1 fluent#2673
• log: Deprecate top-level match for capturing fluentd logs fluent#2689
• in_monitor_agent: Expose Fluentd verion in REST API fluent#2706
• time: Accept localtime xor utc fluent#2720 fluent#2731
• formatter_stdout: Make time_format configurable in stdout format fluent#2721
• supervisor: create log directory when it doesn't exists fluent#2732
• clean up internal classes / methods / code fluent#2647 fluent#2648 fluent#2653 fluent#2654 fluent#2657 fluent#2667 fluent#2674 fluent#2677 fluent#2680 fluent#2709 fluent#2730

Bug fixes

• output: Fix warning printed when chunk key placeholder not replaced fluent#2523 fluent#2733
• Fix dry-run mode fluent#2651
• suppress warning fluent#2652
• suppress keyword argument warning for ruby2.7 fluent#2664
• RPC: Fix debug log text fluent#2666
• time: Properly show class names in error message fluent#2671
• Fix a potential bug that ThreadError may occur on SIGUSR1 fluent#2678
• server helper: Ignore ECONNREFUSED in TLS accept to avoid fluentd restart fluent#2695
• server helper: Fix IPv6 dual stack mode issue for tcp socket. fluent#2697
• supervisor: Fix inline config handling fluent#2708
• Fix typo fluent#2710 fluent#2714

v1.7

Release v1.7.4 - 2019/10/24

Enhancement

• in_http: Add use_204_response parameter to return proper 204 response instead of 200. fluentd v2 will change this parameter to true. fluent#2640

Bug fixes

• child_process helper: fix stderr blocking for discard case fluent#2649
• log: Fix log rotation handling on Windows fluent#2663

Release v1.7.3 - 2019/10/01

Enhancement

• in_syslog: Replace priority_key with severity_key fluent#2636

Bug fixes

• out_forward: Fix nil error after purge obsoleted sockets in socket cache fluent#2635
• fix typo in ChangeLog fluent#2633

Release v1.7.2 - 2019/09/19

Enhancement

• in_tcp: Add security/client to restrict access fluent#2622

Bug fixes

• buf_file/buf_file_single: fix to handle compress data during restart fluent#2620
• plugin: Use __send__ to avoid conflict with user defined send fluent#2614
• buffer: reject invalid timekey at configure phase fluent#2615

Release v1.7.1 - 2019/09/08

Enhancement

• socket helper/out_forward: Support Windows certstore to load certificates fluent#2601
• parser_syslog: Add faster parser for rfc3164 message fluent#2599

Bug fixes

• buf_file/buf_file_single: fix to ignore placeholder based path. fluent#2594
• server helper: Ignore ETIMEDOUT error in SSL_accept fluent#2595
• buf_file: ensure to remove metadata after buffer creation failure fluent#2598
• buf_file_single: fix duplicated path setting check fluent#2600
• fix msgpack-ruby dependency to use recent feature fluent#2606

Release v1.7.0 - 2019/08/20

New feature

• buffer: Add file_single buffer plugin fluent#2579
• output: Add http output plugin fluent#2488

Enhancement

• buffer: Improve the performance of buffer routine fluent#2560 fluent#2563 fluent#2564
• output: Use Mutex instead of Monitor fluent#2561
• event: Add OneEventStrea#empty? method fluent#2565
• thread: Set thread name for ruby 2.3 or later fluent#2574
• core: Cache msgpack packer/unpacker to avoid the object allocation fluent#2559
• time: Use faster way to get sec and nsec fluent#2557
• buf_file: Reduce IO flush by removing IO#truncate fluent#2551
• in_tcp: Improve the performance for multiple event case fluent#2567
• in_syslog: support source_hostname_key and source_address_key for unmatched event fluent#2553
• formatter_csv: Improve the format performance. fluent#2529
• parser_csv: Add fast parser for typical cases fluent#2535
• out_forward: Refactor code fluent#2516 fluent#2532

Bug fixes

• output: fix data lost on decompression fluent#2547
• out_exec_filter: fix non-ascii encoding issue fluent#2539
• in_tail: Don't call parser's configure twice fluent#2569
• Fix unused message handling for
  parameters fluent#2578
• Fix comment/message typos fluent#2549 fluent#2554 fluent#2556 fluent#2566 fluent#2573 fluent#2576 fluent#2583

v1.6

Release v1.6.3 - 2019/07/29

Enhancement

• in_syslog: Add emit_unmatched_lines parameter fluent#2499
• buf_file: Add path_suffix parameter fluent#2524
• in_tail: Improve the performance of split lines fluent#2527

Bug fixes

• http_server: Fix re-define render_json method fluent#2517

Release v1.6.2 - 2019/07/11

Bug fixes

• http_server helper: Add title argument to support multiple servers fluent#2493

Release v1.6.1 - 2019/07/10

Enhancement

• socket/cert: Support all private keys OpenSSL supports, not only RSA. fluent#2487
• output/buffer: Improve statistics method performance fluent#2491

Bug fixes

• plugin_config_formatter: update new doc URL fluent#2481
• out_forward: Avoid zero division error when there are no available nodes fluent#2482

Release v1.6.0 - 2019/07/01

New feature

• plugin: Add http_server helper and in_monitor_agent use it fluent#2447

Enhancement

• in_monitor_agent: Add more metrics for buffer/output fluent#2450
• time/plugin: Add EventTime#to_time method for fast conversion fluent#2469
• socket helper/out_forward: Add connect_timeout parameter fluent#2467
• command: Add --conf-encoding option fluent#2453
• parser_none: Small performance optimization fluent#2455

Bug fixes

• cert: Fix cert match pattern fluent#2466
• output: Fix forget to increment rollback count fluent#2462

v1.5

Release v1.5.2 - 2019/06/13

Bug fixes

• out_forward: Fix duplicated handshake bug in keepalive fluent#2456

Release v1.5.1 - 2019/06/05

Enhancement

• in_tail: Increase read block size to reduce IO call fluent#2418
• in_monitor_agent: Refactor code fluent#2422

Bug fixes

• out_forward: Fix socket handling of keepalive fluent#2434
• parser: Fix the use of name based timezone fluent#2421
• in_monitor_agent: Fix debug parameter handling fluent#2423
• command: Fix error handling of log rotation age option fluent#2427
• command: Fix ERB warning for ruby 2.6 or later fluent#2430

Release v1.5.0 - 2019/05/18

New feature

• out_forward: Support keepalive feature fluent#2393
• in_http: Support TLS via server helper fluent#2395
• in_syslog: Support TLS via server helper fluent#2399

Enhancement

• in_syslog: Add delimiter parameter fluent#2378
• in_forward: Add tag/add_tag_prefix parameters fluent#2396
• parser_json: Add stream_buffer_size parameter for yajl fluent#2381
• command: Add deprecated message to show-plugin-config option fluent#2401
• storage_local: Ignore empty file. Call sync after write for XFS. fluent#2409

Bug fixes

• out_forward: Don't use SO_LINGER on SSL/TLS WinSock fluent#2398
• server helper: Fix recursive lock issue in TLSServer fluent#2341
• Fix typo fluent#2369

v1.4

Release v1.4.2 - 2019/04/02

Enhancements

• in_http: subdomain support in CORS domain fluent#2337
• in_monitor_agent: Expose current timekey list as a buffer metrics fluent#2343
• in_tcp/in_udp: Add source_address_key parameter fluent#2347
• in_forward: Add send_keepalive_packet parameter to check the remote connection is available or not fluent#2352

Bug fixes

• out_exec_filter: Fix typo of child_respawn description fluent#2341
• in_tail: Create parent directories for symlink fluent#2353
• in_tail: Fix encoding duplication check for non-specified case fluent#2361
• log: Fix time format handling of plugin logger when log format is JSON fluent#2356

Release v1.4.1 - 2019/03/18

Enhancements

• system: Add worker_id to process_name when workers is larger than 1 fluent#2321
• parser_regexp: Check named captures. When no named captures, configuration error is raised fluent#2331

Bug fixes

• out_forward: Make tls_client_private_key_passphrase secret fluent#2324
• in_syslog: Check message length when read from buffer in octet counting fluent#2323

Release v1.4.0 - 2019/02/24

New features

• multiprocess: Support syntax fluent#2292
• output: Work and retry_forever together fluent#2276
• out_file: Support placeholders in symlink_path fluent#2254

Enhancements

• output: Add MessagePack unpacker error to unrecoverable error list fluent#2301
• output: Reduce flush delay when large timekey and small timekey_wait are specified fluent#2291
• config: Support embedded ruby code in section argument. fluent#2295
• in_tail: Improve encoding parameter handling fluent#2305
• in_tcp/in_udp: Add section check fluent#2267

Bug fixes

• server: Ignore IOError and related errors in UDP fluent#2310
• server: Ignore EPIPE in TLS accept to avoid fluentd restart fluent#2253

v1.3

Release v1.3.3 - 2019/01/06

Enhancements

• parser_syslog: Use String#squeeze for performance improvement fluent#2239
• parser_syslog: Support RFC5424 timestamp without subseconds fluent#2240

Bug fixes

• server: Ignore ECONNRESET in TLS accept to avoid fluentd restart fluent#2243
• log: Fix plugin logger ignores fluentd log event setting fluent#2252

Release v1.3.2 - 2018/12/10

Enhancements

• out_forward: Support mutual TLS fluent#2187
• out_file: Create pos_file directory if it doesn't exist fluent#2223

Bug fixes

• output: Fix logs during retry fluent#2203

Release v1.3.1 - 2018/11/27

Enhancements

• out_forward: Separate parameter names for certificate fluent#2181 fluent#2190
• out_forward: Add verify_connection_at_startup parameter to check connection setting at startup phase fluent#2184
• config: Check right slash position in regexp type fluent#2176
• parser_nginx: Support multiple IPs in http_x_forwarded_for field fluent#2171

Bug fixes

• fluent-cat: Fix retry limit handling fluent#2193
• record_accessor helper: Delete top level field with bracket style fluent#2192
• filter_record_transformer: Keep class methond to avoid undefined method error fluent#2186

Release v1.3.0 - 2018/11/10

New features

• output: Change thread execution control fluent#2170
• in_syslog: Support octet counting frame fluent#2147
• Use flush_thread_count value for queued_chunks_limit_size when queued_chunks_limit_size is not specified fluent#2173

Enhancements

• output: Show backtrace for unrecoverable errors fluent#2149
• in_http: Implement support for CORS preflight requests fluent#2144

Bug fixes

• server: Fix deadlock between on_writable and close in sockets fluent#2165
• output: show correct error when wrong plugin is specified for secondary fluent#2169

v1.2

Release v1.2.6 - 2018/10/03

Enhancements

• output: Add disable_chunk_backup for ignore broken chunks. fluent#2117
• parser_syslog: Improve regexp for RFC5424 fluent#2141
• in_http: Allow specifying the wildcard '*' as the CORS domain fluent#2139

Bug fixes

• in_tail: Prevent thread switching in the interval between seek and read/write operations to pos_file fluent#2118
• parser: Handle LoadError properly for oj fluent#2140

Release v1.2.5 - 2018/08/22

Bug fixes

• in_tail: Fix resource leak by file rotation fluent#2105
• fix typos

Release v1.2.4 - 2018/08/01

Bug fixes

• output: Consider timezone when calculate timekey fluent#2054
• output: Fix bug in suppress_emit_error_log_interval fluent#2069
• server-helper: Fix connection leak by close timing issue. fluent#2087

Release v1.2.3 - 2018/07/10

Enhancements

• in_http: Consider <parse> parameters in batch mode fluent#2055
• in_http: Support gzip payload fluent#2060
• output: Improve compress performance fluent#2031
• in_monitor_agent: Add missing descriptions for configurable options fluent#2037
• parser_syslog: update regex of pid field for conformance to RFC5424 spec fluent#2051

Bug fixes

• in_tail: Fix to rescue Errno::ENOENT for File.mtime() fluent#2063
• fluent-plugin-generate: Fix Parser plugin template fluent#2026
• fluent-plugin-config-format: Fix NoMethodError for some plugins fluent#2023
• config: Don't warn message for reserved parameters in DSL fluent#2034

Release v1.2.2 - 2018/06/12

Enhancements

• filter_parser: Add remove_key_name_field parameter fluent#2012
• fluent-plugin-config-format: Dump config_argument fluent#2003

Bug fixes

• in_tail: Change pos file entry handling to avoid read conflict for other plugins fluent#1963
• buffer: Wait for all chunks being purged before deleting @queued_num items fluent#2016

Release v1.2.1 - 2018/05/23

Enhancements

• Counter: Add wait API to client fluent#1997

Bug fixes

• in_tcp/in_udp: Fix source_hostname_key to set hostname correctly fluent#1976
• in_monitor_agent: Fix buffer_total_queued_size calculation fluent#1990
• out_file: Temporal fix for broken gzipped files with gzip and append fluent#1995
• test: Fix unstable backup test fluent#1979
• gemspec: Remove deprecated has_rdoc

Release v1.2.0 - 2018/04/30

New Features

• New Counter API fluent#1857
• output: Backup for broken chunks fluent#1952
• filter_grep: Support for <and> and <or> sections fluent#1897
• config: Support regexp type in configuration parameter fluent#1927

Enhancements

• parser_nginx: Support optional http-x-forwarded-for field fluent#1932
• filter_grep: Improve the performance fluent#1940

Bug fixes

• log: Fix unexpected implementation bug when log rotation setting is applied fluent#1957
• server helper: Close invalid socket when ssl error happens on reading fluent#1942
• output: Buffer chunk's unique id should be formatted as hex in the log

v1.1

Release v1.1.3 - 2018/04/03

Enhancements

• output: Support negative index for tag placeholders fluent#1908
• buffer: Add queued_chunks_limit_size to control the number of queued chunks fluent#1916
• time: Make Fluent::EventTime human readable for inspect fluent#1915

Bug fixes

• output: Delete empty queued_num field after purging chunks fluent#1919
• fluent-debug: Fix usage message of fluent-debug command fluent#1920
• out_forward: The node should be disabled when TLS socket for ack returns an error fluent#1925

Release v1.1.2 - 2018/03/18

Enhancements

• filter_grep: Support pattern starts with character classes with // fluent#1887

Bug fixes

• in_tail: Handle records in the correct order on file rotation fluent#1880
• out_forward: Fix race condition with <security> on multi thread environment fluent#1893
• output: Prevent flushing threads consume too much CPU when retry happens fluent#1901
• config: Fix boolean param handling for comment without value fluent#1883
• test: Fix random test failures in test/plugin/test_out_forward.rb fluent#1881 fluent#1890
• command: Fix typo in binlog_reader fluent#1898

Release v1.1.1 - 2018/03/05

Enhancements

• in_debug_agent: Support multi worker environment fluent#1869
• in_forward: Improve SSL setup to support mutual TLS fluent#1861
• buf_file: Skip and delete broken file chunks to avoid unsuccessful retry in resume fluent#1874
• command: Show fluentd version for debug purpose fluent#1839

Bug fixes

• in_forward: Do not close connection until write is complete on failed auth PONG fluent#1835
• in_tail: Fix IO event race condition during shutdown fluent#1876
• in_http: Emit event time instead of raw time value in batch fluent#1850
• parser_json: Add EncodingError to rescue list for oj 3.x. fluent#1875
• config: Fix config_param for string type with frozen string fluent#1838
• timer: Fix a bug to leak non-repeating timer watchers fluent#1864

Release v1.1.0 - 2018/01/17

New features / Enhancements

• config: Add hostname and worker_id short-cut fluent#1814
• parser_ltsv: Add delimiter_pattern parameter fluent#1802
• record_accessor helper: Support nested field deletion fluent#1800
• record_accessor helper: Expose internal instance @keys variable fluent#1808
• log: Improve Log#on_xxx API performance fluent#1809
• time: Improve time formatting performance fluent#1796
• command: Port certificates generating command from secure-forward fluent#1818

Bug fixes

• server helper: Fix TCP + TLS degradation fluent#1805
• time: Fix the method for TimeFormatter#call fluent#1813

v1.0

Release v1.0.2 - 2017/12/17

New features / Enhancements

• Use dig_rb instead of ruby_dig to support dig method in more objects fluent#1794

Release v1.0.1 - 2017/12/14

New features / Enhancements

• in_udp: Add receive_buffer_size parameter fluent#1788
• in_tail: Add enable_stat_watcher option to disable inotify events fluent#1775
• Relax strptime gem version

Bug fixes

• in_tail: Properly handle moved back and truncated case fluent#1793
• out_forward: Rebuild weight array to apply server setting properly fluent#1784
• fluent-plugin-config-formatter: Use v1.0 for URL fluent#1781

Release v1.0.0 - 2017/12/6

See CNCF announcement :)

New features / Enhancements

• out_copy: Support ignore_error argument in <store> fluent#1764
• server helper: Improve resource usage of TLS transport fluent#1764
• Disable tracepoint feature to omit unnecessary insts fluent#1764

Bug fixes

• out_forward: Don't update retry state when failed to get ack response. fluent#1686
• plugin: Combine before_shutdown and shutdown call in one sequence. fluent#1763
• Add description to parsers fluent#1776 fluent#1777 fluent#1778 fluent#1779 fluent#1780
• filter_parser: Add parameter description fluent#1773
• plugin: Combine before_shutdown and shutdown call in one sequence. fluent#1763

v0.14

Release v0.14.25 - 2017/11/29

New features / Enhancements

• Disable tracepoint feature to omit unnecessary insts fluent#1764

Bug fixes

• out_forward: Don't update retry state when failed to get ack response. fluent#1686
• plugin: Combine before_shutdown and shutdown call in one sequence. fluent#1763

Release v0.14.24 - 2017/11/24

New features / Enhancements

• plugin-config-formatter: Add link to plugin helper result fluent#1753
• server helper: Refactor code fluent#1759

Bug fixes

• supervisor: Don't call change_privilege twice fluent#1757

Release v0.14.23 - 2017/11/15

New features / Enhancements

• in_udp: Add remove_newline parameter fluent#1747

Bug fixes

• buffer: Lock buffers in order of metadata fluent#1722
• in_tcp: Fix log corruption under load. fluent#1729
• out_forward: Fix elapsed time miscalculation in tcp heartbeat fluent#1738
• supervisor: Fix worker pid handling during worker restart fluent#1739
• in_tail: Skip setup failed watcher to avoid resource leak and log bloat fluent#1742
• agent: Add error location to emit error logs fluent#1746
• command: Consider hyphen and underscore in fluent-plugin-generate arguments fluent#1751

Release v0.14.22 - 2017/11/01

New features / Enhancements

• formatter_tsv: Add add_newline parameter fluent#1691
• out_file/out_secondary_file: Support ${chunk_id} placeholder. This includes extrace_placeholders API change fluent#1708
• record_accessor: Support double quotes in bracket notation fluent#1716
• log: Show running ruby version in startup log fluent#1717
• log: Log message when chunk is created fluent#1718
• in_tail: Add pos_file duplication check fluent#1720

Bug fixes

• parser_apache2: Delay time parser initialization fluent#1690
• cert_option: Improve generated certificates' conformance to X.509 specification fluent#1714
• buffer: Always lock chunks first to avoid deadlock fluent#1721

Release v0.14.21 - 2017/09/07

New features / Enhancements

• filter_parser: Support record_accessor in key_name fluent#1654
• buffer: Support record_accessor in chunk keys fluent#1662

Bug fixes

• compat_parameters: Support all syslog parser parameters fluent#1650
• filter_record_transformer: Don't create new keys if the original record doesn't have keep_keys keys fluent#1663
• in_tail: Fix the error when 'tag *' is configured fluent#1664
• supervisor: Clear previous worker pids when receive kill signals. fluent#1683

Release v0.14.20 - 2017/07/31

New features / Enhancements

• plugin: Add record_accessor plugin helper fluent#1637
• log: Add format and time_format parameters to <system> setting fluent#1644

Bug fixes

• buf_file: Improve file handling to mitigate broken meta file fluent#1628
• in_syslog: Fix the description of resolve_hostname parameter fluent#1633
• process: Fix signal handling. Send signal to all workers fluent#1642
• output: Fix error message typo fluent#1643

Release v0.14.19 - 2017/07/12

New features / Enhancements

• in_syslog: More characters are available in tag part of syslog format fluent#1610
• in_syslog: Add resolve_hostname parameter fluent#1616
• filter_grep: Support new configuration format by config_section fluent#1611

Bug fixes

• output: Fix race condition of retry state in flush thread fluent#1623
• test: Fix typo in test_in_tail.rb fluent#1622

Release v0.14.18 - 2017/06/21

New features / Enhancements

• parser: Add rfc5424 regex without priority fluent#1600

Bug fixes

• in_tail: Fix timing issue that the excluded_path doesn't apply. fluent#1597
• config: Fix broken UTF-8 encoded configuration file handling fluent#1592
• out_forward: Don't stop heartbeat when error happen fluent#1602
• Fix command name typo in plugin template fluent#1603

Release v0.14.17 - 2017/05/29

New features / Enhancements

• in_tail: Add ignore_repeated_permission_error fluent#1574
• server: Accept private key for TLS server without passphrase fluent#1575
• config: Validate workers option on standalone mode fluent#1577

Bug fixes

• config: Mask all secret parameters in worker section fluent#1580
• out_forward: Fix ack handling fluent#1581
• plugin-config-format: Fix markdown format generator fluent#1585

Release v0.14.16 - 2017/05/13

New features / Enhancements

• config: Allow null byte in double-quoted string fluent#1552
• parser: Support %iso8601 special case for time_format fluent#1562

Bug fixes

• out_forward: Call proper method for each connection type fluent#1560
• in_monitor_agent: check variable buffer is a Buffer instance fluent#1556
• log: Add missing '<<' method to delegators fluent#1558
• command: uninitialized constant Fluent::Engine in fluent-binlog-reader fluent#1568

Release v0.14.15 - 2017/04/23

New features / Enhancements

• Add <worker N> directive fluent#1507
• in_tail: Do not warn that directories are unreadable in the in_tail plugin fluent#1540
• output: Add formatted_to_msgpack_binary? to Output plugin API fluent#1547
• windows: Allow the Windows Service name Fluentd runs as to be configurable fluent#1548

Bug fixes

• in_http: Fix X-Forwarded-For header handling. Accpet multiple headers fluent#1535
• Fix backward compatibility with Fluent::DetachProcess and Fluent::DetachMultiProcess fluent#1522
• fix typo fluent#1521 fluent#1523 fluent#1544
• test: Fix out_file test with timezone fluent#1546
• windows: Quote the file path to the Ruby bin directory when starting fluentd as a windows service fluent#1536

Release v0.14.14 - 2017/03/23

New features / Enhancements

• in_http: Support 'application/msgpack` header fluent#1498
• in_udp: Add message_length_limit parameter for parameter name consistency with in_syslog fluent#1515
• in_monitor_agent: Start one HTTP server per worker on sequential port numbers fluent#1493
• in_tail: Skip the refresh of watching list on startup fluent#1487
• filter_parser: filter_parser: Add emit_invalid_record_to_error parameter fluent#1494
• parser_syslog: Support RFC5424 syslog format fluent#1492
• parser: Allow escape sequence in Apache access log fluent#1479
• config: Add actual value in the placeholder error message fluent#1497
• log: Add Fluent::Log#<< to support some SDKs fluent#1478

Bug fixes

• Fix cleanup resource fluent#1483
• config: Set encoding forcefully to avoid UndefinedConversionError fluent#1477
• Fix Input and Output deadlock when buffer is full during startup fluent#1502
• config: Fix log_level handling in <system> fluent#1501
• Fix typo in root agent error log fluent#1491
• storage: Fix a bug storage_create cannot accept hash as conf keyword argument fluent#1482

Release v0.14.13 - 2017/02/17

New features / Enhancements

• in_tail: Add 'limit_recently_modified' to limit watch files. fluent#1474
• configuration: Improve 'flush_interval' handling for better message and backward compatibility fluent#1442
• command: Add 'fluent-plugin-generate' command fluent#1427
• output: Skip record when 'Output#format' returns nil fluent#1469

Bug fixes

• output: Secondary calculation should consider 'retry_max_times' fluent#1452
• Fix regression of deprecated 'process' module fluent#1443
• Fix missing parser_regex require fluent#1458 fluent#1453
• Keep 'Fluent::BufferQueueLimitError' for existing plugins fluent#1456
• in_tail: Untracked files should be removed from watching list to avoid memory bloat fluent#1467
• in_tail: directories should be skipped when the ** pattern is used fluent#1464
• record_transformer: Revert "Use BasicObject for cleanroom" for enable_ruby regression. fluent#1461
• buf_file: handle "Too many open files" error to keep buffer and metadata pair fluent#1468

Release v0.14.12 - 2017/01/30

New features / Enhancements

• Support multi process workers by workers option fluent#1386
• Support TLS transport security layer by server plugin helper, and forward input/output plugins fluent#1423
• Update internal log event handling to route log events to @FLUENT_LOG label if configured, suppress log events in startup/shutdown in default fluent#1405
• Rename buffer plugin chunk limit parameters for consistency fluent#1412
• Encode string values from configuration files in UTF8 fluent#1411
• Reorder plugin load paths to load rubygem plugins earlier than built-in plugins to overwrite them fluent#1410
• Clock API to control internal thread control fluent#1425
• Validate config_param options to restrict unexpected specifications fluent#1437
• formatter: Add add_newline option to get formatted lines without newlines fluent#1420
• in_forward: Add ignore_network_errors_at_startup option for automated cluster deployment fluent#1399
• in_forward: Close listening socket in #stop, not to accept new connection request in early stage of shutdown fluent#1401
• out_forward: Ensure to pack values in str type of msgpack fluent#1413
• in_tail: Add emit_unmatched_lines to capture lines which unmatch configured regular expressions fluent#1421
• in_tail: Add open_on_every_update to read lines from files opened in exclusive mode on Windows platform fluent#1409
• in_monitor_agent: Add with_ivars query parameter to get instance variables only for specified instance variables fluent#1393
• storage_local: Generate file store path using usage, with root_dir configuration fluent#1438
• Improve test stability fluent#1426

Bug fixes

• Fix bug to ignore command line options: --rpc-endpoint, --suppress-config-dump, etc fluent#1398
• Fix bug to block infinitely in shutdown when buffer is full and overflow_action is block fluent#1396
• buf_file: Fix bug not to use root_dir even if configured correctly fluent#1417
• filter_record_transformer: Fix to use BasicObject for clean room fluent#1415
• filter_record_transformer: Fix bug that remove_keys doesn't work with renew_time_key fluent#1433
• in_monitor_agent: Fix bug to crash with NoMethodError for some output plugins fluent#1365

Release v0.14.11 - 2016/12/26

New features / Enhancements

• Add "root_dir" parameter in <system> directive to configure server root directory, used for buffer/storage paths fluent#1374
• Fix not to restart Fluentd processes when unrecoverable errors occur fluent#1359
• Show warnings in log when output flush operation takes longer time than threshold fluent#1370
• formatter_csv: Raise configuration error when no field names are specified fluent#1369
• in_syslog: Update implementation to use plugin helpers fluent#1382
• in_forward: Add a configuration parameter "source_address_key" fluent#1382
• in_monitor_agent: Add a parameter "include_retry" to get detail retry status fluent#1387
• Add Ruby 2.4 into supported ruby versions

Bug fixes

• Fix to set process name of supervisor process fluent#1380
• in_forward: Fix a bug not to handle "require_ack_response" correctly fluent#1389

Release v0.14.10 - 2016/12/14

New features / Enhancement

• Add socket/server plugin helper to write TCP/UDP clients/servers as Fluentd plugin fluent#1312 fluent#1350 fluent#1356 fluent#1362
• Fix to raise errors when injected hostname is also specified as chunk key fluent#1357
• in_tail: Optimize to read lines from file fluent#1325
• in_monitor_agent: Add new parameter "include_config"(default: true) fluent#1317
• in_syslog: Add "priority_key" and "facility_key" options fluent#1351
• filter_record_transformer: Remove obsoleted syntax like "${message}" and not to dump records in logs fluent#1328
• Add an option "--time-as-integer" to fluent-cat command to send events from v0.14 fluent-cat to v0.12 fluentd fluent#1349

Bug fixes

• Specify correct Oj options for newer versions (Oj 2.18.0 or later) fluent#1331
• TimeSlice output plugins (in v0.12 style) raise errors when "utc" parameter is specified fluent#1319
• Parser plugins cannot use options for regular expressions fluent#1326
• Fix bugs not to raise errors to use logger in v0.12 plugins fluent#1344 fluent#1332
• Fix bug about shutting down Fluentd in Windows fluent#1367
• in_tail: Close files explicitly in tests fluent#1327
• out_forward: Fix bug not to convert buffer configurations into v0.14 parameters fluent#1337
• out_forward: Fix bug to raise error when "expire_dns_cache" is specified fluent#1346
• out_file: Fix bug to raise error about buffer chunking when it's configured as secondary fluent#1338

Release v0.14.9 - 2016/11/15

New features / Enhancement

• filter_parser: Port fluent-plugin-parser into built-in plugin fluent#1191
• parser/formatter plugin helpers with default @type in plugin side fluent#1267
• parser: Reconstruct Parser related classes fluent#1286
• filter_record_transformer: Remove old behaviours fluent#1311
• Migrate some built-in plugins into v0.14 API fluent#1257 (out_file) fluent#1297 (out_exec, out_exec_filter) fluent#1306 (in_forward, out_forward) fluent#1308 (in_http)
• test: Improve test drivers fluent#1302 fluent#1305

Bug fixes

• log: Avoid name conflict between Fluent::Logger fluent#1274
• fluent-cat: Fix fluent-cat command to send sub-second precision time fluent#1277
• config: Fix a bug not to overwrite default value with nil fluent#1296
• output: Fix timezone for compat timesliced output plugins fluent#1307
• out_forward: fix not to raise error when out_forward is initialized as secondary fluent#1313
• output: Event router for secondary output fluent#1283
• test: fix to return the block value as expected by many rubyists fluent#1284

Release v0.14.8 - 2016/10/13

Bug fixes

• Add msgpack_each to buffer chunks in compat-layer output plugins fluent#1273

Release v0.14.7 - 2016/10/07

New features / Enhancement

• Support data compression in buffer plugins fluent#1172
• in_forward: support to transfer compressed data fluent#1179
• out_stdout: fix to show nanosecond resolution time fluent#1249
• Add option to rotate Fluentd daemon's log fluent#1235
• Add extract plugin helper, with symmetric time parameter support in parser/formatter and inject/extract fluent#1207
• Add a feature to parse/format numeric time (unix time [+ subsecond value]) fluent#1254
• Raise configuration errors for inconsistent <label> configurations fluent#1233
• Fix to instantiate an unconfigured section even for multi: true fluent#1210
• Add validators of placeholders for buffering key extraction fluent#1255
• Fix to show log messages about filter optimization only when needed fluent#1227
• Add some features to write plugins more easily fluent#1256
• Add a tool to load dumped events from file fluent#1165

Bug fixes

• Fix Oj's default option to encode/decode JSON in the same way with Yajl fluent#1147 fluent#1239
• Fix to raise correct configuration errors fluent#1223
• Fix a bug to call shutdown method (and some others) twice fluent#1242
• Fix to enable chunk.each only when it's encoded by msgpack fluent#1263
• Fix a bug not to stop enqueue/flush threads correctly fluent#1264
• out_forward: fix a bug that UDP heartbeat doesn't work fluent#1238
• out_file: fix a crash bug when v0.14 enables symlink and resumes existing buffer file chunk generated by v0.12 fluent#1234
• in_monitor_agent: fix compatibility problem between outputs of v0.12 and v0.14 fluent#1232
• in_tail: fix a bug to crash to read large amount logs fluent#1259 fluent#1261

Release v0.14.6 - 2016/09/07

Bug fixes

• in_tail: Add a missing parser_multiline require fluent#1212
• forward: Mark secret parameters of forward plugins as secret fluent#1209

Release v0.14.5 - 2016/09/06

New features / Enhancement

• Add authentication / authorization feature to forward protocol and in/out_forward plugins fluent#1136
• Add a new plugin to dump buffers in retries as secondary plugin fluent#1154
• Merge out_buffered_stdout and out_buffered_null into out_stdout and out_null fluent#1200

Bug fixes

• Raise configuration errors to clarify what's wrong when "@type" is missing fluent#1202
• Fix the bug not to launch Fluentd when v0.12 MultiOutput plugin is configured fluent#1206

Release v0.14.4 - 2016/08/31

New features / Enhancement

• Add a method to Filter API to update time of events fluent#1140
• Improve performance of filter pipeline fluent#1145
• Fix to suppress not to warn about different plugins for primary and secondary without any problems fluent#1153
• Add deprecated/obsoleted options to config_param to show removed/warned parameters fluent#1186
• in_forward: Add a feature source_hostname_key to inject source hostname into records fluent#807
• in_tail: Add a feature from_encoding to specify both encoding from and to fluent#1067
• filter_record_transformer: Fix to prevent overwriting reserved placeholder keys fluent#1176
• Migrate some built-in plugins into v0.14 API fluent#1149 fluent#1151
• Update dependencies fluent#1193

Bug fixes

• Fix to start/stop/restart Fluentd processes correctly on Windows environment fluent#1171 fluent#1192
• Fix to handle Windows events correctly in winsvc.rb fluent#1155 fluent#1170
• Fix not to continue to restart workers for configuration errors fluent#1183
• Fix output threads to start enqueue/flush buffers until plugins' start method ends fluent#1190
• Fix a bug not to set umask 0 fluent#1152
• Fix resource leak on one-shot timers fluent#1178
• Fix to call plugin helper methods in configure fluent#1184
• Fix a bug to count event size https://github.com/fluent/fluentd/pull/1164/files
• Fix to require missed compat modules fluent#1168
• Fix to start properly for plugins under MultiOutput fluent#1167
• Fix test drivers to set class name into plugin instances fluent#1069
• Fix tests not to use mocks for Time (improve test stabilization) fluent#1194

Release 0.14.3 - 2016/08/30

• Fix the dependency for ServerEngine 1.x

Release 0.14.2 - 2016/08/09

New features / Enhancement

• Fix to split large event stream into some/many chunks in buffers fluent#1062
• Add parser and filter support in compat_parameters plugin helper fluent#1079
• Add a RPC call to flush buffers and stop workers fluent#1134
• Update forward protocol to pass the number of events in a payload fluent#1137
• Improve performance of some built-in formatter plugins fluent#1082 fluent#1086
• Migrate some built-in plugins and plugin util modules into v0.14 API fluent#1058 fluent#1061 fluent#1076 fluent#1078 fluent#1081 fluent#1083 fluent#1091
• Register RegExpParser as a parser plugin explicitly fluent#1094
• Add delimiter option to CSV parser fluent#1108
• Add an option to receive longer udp syslog messages fluent#1127
• Add a option to suspend internal status in dummy plugin fluent#900
• Add a feature to capture filtered records in test driver for Filter plugins fluent#1077
• Add some utility methods to plugin test drivers fluent#1114

Bug fixes

• Fix bug to read non buffer-chunk files as buffer chunks when Fluentd resumed fluent#1124
• Fix bug not to load Filter plugins which are specified in configurations fluent#1118
• Fix bug to ignore -p option to specify directories of plugins fluent#1133
• Fix bug to overwrite base class configuration section definitions by subclasses fluent#1119
• Fix to stop Fluentd worker process by Ctrl-C when --no-supervisor specified fluent#1089
• Fix regression about RPC call to reload configuration fluent#1093
• Specify to ensure Oj JSON parser to use strict mode fluent#1147
• Fix unexisting path handling in Windows environment fluent#1104

Release 0.14.1 - 2016/06/30

New features / Enhancement

• Add plugin helpers for parsers and formatters fluent#1023
• Extract some mixins into compat modules fluent#1044 fluent#1052
• Add utility methods for tests and test drivers fluent#1047
• Migrate some built-in plugins to v0.14 APIs fluent#1049 fluent#1057 fluent#1060 fluent#1064
• Add support of X-Forwarded-For header in in_http plugin fluent#1051
• Warn not to create too many staged chunks at configure fluent#1054
• Add a plugin helper to inject tag/time/hostname fluent#1063

Bug fixes

• Fix in_monitor_agent for v0.14 plugins fluent#1003
• Fix to call #format_stream of plugins themselves when RecordFilter mixin included fluent#1005
• Fix shutdown sequence to wait force flush fluent#1009
• Fix a deadlock bug in shutdown fluent#1010
• Fix to require DetachProcessMixin in default for compat plugins fluent#1014
• Fix to overwrite configure_proxy name only for root sections for debugging fluent#1015
• Rename file for in_unix plugin fluent#1017
• Fix a bug not to create pid file when daemonized fluent#1021
• Fix wrong DEFAULT_PLUGIN_PATH fluent#1028
• Fix a bug not to use primary plugin type for secondary in default fluent#1032
• Add --run-worker option to distinguish to run as worker without supervisor fluent#1033
• Fix regression of fluent-debug command fluent#1046
• Update windows-pr dependency to 1.2.5 fluent#1065
• Fix supervisor to pass RUBYOPT to worker processes fluent#1066

Release 0.14.0 - 2016/05/25

New features / Enhancement

This list includes changes of 0.14.0.pre.1 and release candidates.

• Update supported Ruby version to 2.1 or later fluent#692
• Sub-second event time support fluent#653
• Windows support and supervisor improvement fluent#674 fluent#831 fluent#880
• Add New plugin API fluent#800 fluent#843 fluent#866 fluent#905 fluent#906 fluent#917 fluent#928 fluent#943 fluent#964 fluent#965 fluent#972 fluent#983
• Add standard chunking format fluent#914
• Add Compatibility layer for v0.12 plugins fluent#912 fluent#969 fluent#974 fluent#992 fluent#999
• Add Plugin Storage API fluent#864 fluent#910
• Enforce to use router.emit instead of Engine.emit fluent#883
• log: Show plugin name and id in logs fluent#860
• log: Dump configurations with v1 syntax in logs fluent#867
• log: Dump errors with class in logs fluent#899
• config: Add simplified syntax for configuration values of hash and array fluent#875
• config: Add 'init' option to config_section to initialize section objects fluent#877
• config: Support multiline string in quoted strings fluent#929
• config: Add optional arguments on Element#elements to select child elements fluent#948
• config: Show deprecated warnings for reserved parameters fluent#971
• config: Make the detach process forward interval configurable fluent#982
• in_tail: Add 'path_key' option to inject tailing path fluent#951
• Remove in_status plugin fluent#690

Bug fixes

• config: Enum list must be of symbols fluent#821
• config: Fix to dup values in default fluent#827
• config: Fix problems about overwriting subsections fluent#844 fluent#981
• log: Serialize Fluent::EventTime as Integer in JSON fluent#904
• out_forward: Add missing error class and tests for it fluent#922

Internal fix / Refactoring

• Fix dependencies between files fluent#799 fluent#808 fluent#823 fluent#824 fluent#825 fluent#826 fluent#828 fluent#859 fluent#892
• Separate PluginId from config fluent#832
• Separate MessagePack factory from Engine fluent#871
• Register plugins to registry fluent#838
• Move TypeConverter mixin to mixin.rb fluent#842
• Override default configurations by <system> fluent#854
• Suppress Ruby level warnings fluent#846 fluent#852 fluent#890 fluent#946 fluent#955 fluent#966

See https://github.com/fluent/fluentd/blob/v0.12/CHANGELOG.md for v0.12 changelog