## Changelog [[tags]](https://github.com/uken/fluent-plugin-elasticsearch/tags)

### [Unreleased]

### 2.8.6
- auth: Fix missing auth tokens after reloading connections (#394)

### 2.8.5
- Add deprecated option into content_type parameter (#391)

### 2.8.4
- Use nanosecond precision in elasticsearch_dynamic (#387)

### 2.8.3
- Specify SSL/TLS version in out_elasticsearch_dynamic (#385)

### 2.8.2
- Revert content type header default value (#383)

### 2.8.1
- Restore default value of type name #(377)

### 2.8.0
- Remove outdated generating hash id support module (#373)
- Check Elasticsearch major version (#371)

### 2.7.0
- Configureable content type (#367)

### 2.6.1
- Prevent error when using template in elasticsearch_dynamic for elementally use case (#363)

### 2.6.0
- Handle high precision time format when using custom time_key (#360)

### 2.5.0
- Using nested record in `id_key`, `parent_key`, and `routing_key` (#351)
- Fix inverted case of a proper noun "Elasticsearch" (#349)

### 2.4.1
- Add config parameter to enable elasticsearch-ruby's transporter logging (#342)

### 2.4.0
- Add built-in placeholders support against type_name parameter (#338)

### 2.3.0
- Allow overwriting existing index template (#239)

### 2.2.0
- GA release 2.2.0.

### 2.2.0.rc.1
- Separate generate hash id module and bundled new plugin for generating unique hash id (#331)

### 2.1.1
- Raise ConfigError when specifying different @hash_config.hash_id_key and id_key configration (#327)
- Small typo fix in README.md (#325)

### 2.1.0
- Retry on certain errors from Elasticsearch (#322)

### 2.0.1
- Releasing generating hash id mechanism to avoid records duplication feature.

### 2.0.1.rc.1
- Add generating hash id mechanism to avoid records duplication (#318)

### 2.0.0
- Release for Fluentd v0.14 stable.

### 2.0.0.rc.7
- Add `include_timestamp` option (#310)

### 2.0.0.rc.6
- Improve documentation (#304)
- Handle dynamic_config misconfigurations (#305)
- Escape basic authentication user information placeholders (#306)

### 2.0.0.rc.5
- make configurable with `ssl_version` parameter (#299)
- add `logstash_prefix_separator` config parameter (#297)

### 2.0.0.rc.4
- fix license identifier in gemspec (#294)

### 2.0.0.rc.3
- add built-in placeholders support (#288, #293)
- permit multi workers feature (#291)

### 2.0.0.rc.2
- add pipeline parameter (#290)

### 2.0.0.rc.1
- Use v0.14 API to support nanosecond precision (#223)

### 1.9.5
- sub-second time precision [(#249)](https://github.com/uken/fluent-plugin-elasticsearch/pull/249)

### 1.9.4
- Include 'Content-Type' header in `transport_options`

### 1.9.3
- Use latest elasticsearch-ruby (#240)
- Log ES response errors (#230)

### 1.9.2
- Fix elasticsearch_dynamic for v0.14 (#224)

### 1.9.1
- Cast `reload_*` configs in out_elasticsearch_dynamic to bool (#220)

### 1.9.0
- add `time_parse_error_tag` (#211)
- add `reconnect_on_error` (#214)

### 1.9.0.rc.1
- Optimize output plugins (#203)

### 1.8.0
- fix typo in defaults for ssl_verify on elasticsearch_dynamic (#202)
- add support for `templates` (#196)
- rename `send` method to `send_bulk` (#206)

### 1.7.0
- add support for `template_name` and `template_file` (#194)

### 1.6.0
- add support for dot separated `target_index_key` and `target_type_key` (#175)
- add `remove_keys_on_update` and `remove_keys_on_update_key` (#189)
- fix support for fluentd v0.14 (#191)
- remove support for elasticsearch v2 for now (#177)

### 1.5.0
- add `routing_key` (#158)
- add `time_key_exclude_timestamp` to exclude `@timestamp` (#161)
- convert index names to lowercase (#163)
- add `remove_keys` (#164)
- add `flatten_hashes` (#168)
- add `target_type_key` (#169)

### 1.4.0
- add `target_index_key` to specify target index (#153)
- add `time_key_format` for faster time format parsing (#154)

### 1.3.0
- add `write_operation`

### 1.2.1
- fix `resurrect_after` in out_elasticsearch_dynamic

### 1.2.0
- out_elasticsearch_dynamic get memory improvement and fix for race condition (#133)
- Add `resurrect_after` option (#136)

### 1.1.0
- Support SSL client verification and custom CA file (#123)
- Release experimental `type elasticsearch_dynamic` (#127)

### 1.0.0
- password config param is now marked as secret and won't be displayed in logs.

### 0.9.0
- Add `ssl_verify` option (#108)

### 0.8.0
- Replace Patron with Excon HTTP client (#93)

### 0.7.0
- Add new option `time_key` (#85)

### 0.6.1
- 0.10.43 is minimum version required of fluentd (#79)

### 0.6.0
- added `reload_on_failure` and `reload_connections` flags (#78)

### 0.5.1
- fix legacy hosts option, port should be optional (#75)

### 0.5.0
- add full connection URI support (#65)
- use `@timestamp` for index (#41)
- add support for elasticsearch gem version 1 (#71)
- fix connection reset & retry when connection is lost (#67)

### 0.4.0
- add `request_timeout` config (#59)
- fix lockup when non-hash values are sent (#52)

### 0.3.1
- force using patron (#46)
- do not generate @timestamp if already part of message (#35)

### 0.3.0
- add `parent_key` option (#28)
- have travis-ci build on multiple rubies (#30)
- add `utc_index` and `hosts` options, switch to using `elasticsearch` gem (#26, #29)

### 0.2.0
- fix encoding issues with JSON conversion and again when sending to elasticsearch (#19, #21)
- add logstash_dateformat option (#20)

### 0.1.4
- add logstash_prefix option

### 0.1.3
- raising an exception on non-success response from elasticsearch

### 0.1.2
- add id_key option

### 0.1.1
- fix timezone in logstash key

### 0.1.0
 - Initial gem release.