Rewrite plugin using http client mixin

Gemfile

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-# Copyright 2021 Dynatrace LLC
+# Copyright 2023 Dynatrace LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

NOTICE

@@ -0,0 +1,7 @@
+Logstash Output Dynatrace
+Copyright 2023 Dynatrace LLC
+
+The Initial Developer of some parts of this plugin, which are copied from,
+derived from, or inspired by Logstash Output HTTP, is
+Elastic (https://www.elastic.co) and Logstash contributors.
+Copyright 2020 Elastic and contributors.

README.md

@@ -103,12 +103,8 @@ It is recommended to leave this optional configuration set to `false` unless abs
 Setting `ssl_verify_none` to `true` causes the output plugin to skip certificate verification when sending log ingest requests to SSL and TLS protected HTTPS endpoints.
 This option may be required if you are using a self-signed certificate, an expired certificate, or a certificate which was generated for a different domain than the one in use.
 
-### `codec` 
-
-* Value type is codec
-* Default value is "plain"
-
-The codec used for output data. Output codecs are a convenient method for encoding your data before it leaves the output without needing a separate filter in your Logstash pipeline.
+> NOTE: Starting in version `0.4.0` this option has no effect in versions of logstash older than `8.1.0`.
+> If this functionality is required it is recommended to update logstash or downgrade to version `0.3.2` of this plugin.
 
 ### `enable_metric`
 

Rakefile

@@ -1,7 +1,7 @@
 #!/usr/bin/env rake
 # frozen_string_literal: true
 
-# Copyright 2021 Dynatrace LLC
+# Copyright 2023 Dynatrace LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

docs/index.asciidoc

@@ -66,5 +66,7 @@ It is recommended to leave this optional configuration set to `false` unless abs
 Setting `ssl_verify_none` to `true` causes the output plugin to skip certificate verification when sending log ingest requests to SSL and TLS protected HTTPS endpoints.
 This option may be required if you are using a self-signed certificate, an expired certificate, or a certificate which was generated for a different domain than the one in use.
 
+NOTE: Starting in version `0.4.0` this option has no effect in versions of logstash older than `8.1.0`. If this functionality is required it is recommended to update logstash or downgrade to version `0.3.2` of this plugin.
+
 [id="plugins-{type}s-{plugin}-common-options"]
 include::{include_path}/{type}.asciidoc[]

version.rb → lib/dynatrace/version.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-# Copyright 2021 Dynatrace LLC
+# Copyright 2023 Dynatrace LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,6 +15,7 @@
 # limitations under the License.
 
 module DynatraceConstants
-  # Also required to change the version in lib/logstash/outputs/dynatrace.rb
-  VERSION = '0.4.0'
+  require 'yaml'
+  VERSION = YAML.load_file(File.expand_path('../../version.yaml',
+    File.dirname(__FILE__))).fetch('logstash-output-dynatrace')
 end