Update references

Change references to opensearch in comments, documentation and other
places.

Signed-off-by: Vijayan Balasubramanian <[email protected]>

Author: VijayanB

lib/logstash/outputs/opensearch/http_client/pool.rb

@@ -168,8 +168,7 @@ def sniff!
       update_urls(check_sniff)
     end
 
-    ES1_SNIFF_RE_URL  = /\[([^\/]*)?\/?([^:]*):([0-9]+)\]/
-    ES2_AND_ABOVE_SNIFF_RE_URL  = /([^\/]*)?\/?([^:]*):([0-9]+)/
+    SNIFF_RE_URL  = /([^\/]*)?\/?([^:]*):([0-9]+)/
     # Sniffs and returns the results. Does not update internal URLs!
     def check_sniff
       _, url_meta, resp = perform_request(:get, @sniffing_path)
@@ -197,7 +196,7 @@ def sniff(nodes)
     end
 
     def address_str_to_uri(addr_str)
-      matches = addr_str.match(ES1_SNIFF_RE_URL) || addr_str.match(ES2_AND_ABOVE_SNIFF_RE_URL)
+      matches = addr_str.match(SNIFF_RE_URL)
       if matches
         host = matches[1].empty? ? matches[2] : matches[1]
         ::LogStash::Util::SafeURI.new("#{host}:#{matches[3]}")
@@ -221,7 +220,7 @@ def start_resurrectionist
     end
 
     def health_check_request(url)
-      logger.debug("Running health check to see if an ES connection is working", url: url.sanitized.to_s, path: @healthcheck_path)
+      logger.debug("Running health check to see if an OpenSearch connection is working", url: url.sanitized.to_s, path: @healthcheck_path)
       perform_request_to_url(url, :head, @healthcheck_path)
     end
 
@@ -231,16 +230,16 @@ def healthcheck!
         begin
           health_check_request(url)
           # If no exception was raised it must have succeeded!
-          logger.warn("Restored connection to ES instance", url: url.sanitized.to_s)
-          # We reconnected to this node, check its ES version
+          logger.warn("Restored connection to OpenSearch instance", url: url.sanitized.to_s)
+          # We reconnected to this node, check its version
           version = get_version(url)
           @state_mutex.synchronize do
             meta[:version] = version
             set_last_version(version, url)
             meta[:state] = :alive
           end
         rescue HostUnreachableError, BadResponseCodeError => e
-          logger.warn("Attempted to resurrect connection to dead ES instance, but got an error", url: url.sanitized.to_s, exception: e.class, message: e.message)
+          logger.warn("Attempted to resurrect connection to dead OpenSearch instance, but got an error", url: url.sanitized.to_s, exception: e.class, message: e.message)
         end
       end
     end
@@ -312,7 +311,7 @@ def update_urls(new_urls)
         logger.info? && logger.info("OpenSearch pool URLs updated", :changes => state_changes)
       end
 
-      # Run an inline healthcheck anytime URLs are updated
+      # Run an inline health check anytime URLs are updated
       # This guarantees that during startup / post-startup
       # sniffing we don't have idle periods waiting for the
       # periodic sniffer to allow new hosts to come online

lib/logstash/plugin_mixins/opensearch/common.rb

@@ -21,7 +21,7 @@ module Common
     DOC_SUCCESS_CODES = [200, 201]
     DOC_CONFLICT_CODE = 409
 
-    # Perform some ES options validations and Build the HttpClient.
+    # Perform some OpenSearch options validations and Build the HttpClient.
     # Note that this methods may sets the @user, @password, @hosts and @client ivars as a side effect.
     # @return [HttpClient] the new http client
     def build_client
@@ -53,7 +53,7 @@ def hosts_default?(hosts)
     private :hosts_default?
 
 
-    # Plugin initialization extension point (after a successful ES connection).
+    # Plugin initialization extension point (after a successful OpenSearch connection).
     def finish_register
     end
     protected :finish_register
@@ -70,7 +70,7 @@ def successful_connection?
       !!maximum_seen_major_version
     end
 
-    # launch a thread that waits for an initial successful connection to the ES cluster to call the given block
+    # launch a thread that waits for an initial successful connection to the OpenSearch cluster to call the given block
     # @param block [Proc] the block to execute upon initial successful connection
     # @return [Thread] the successful connection wait thread
     def after_successful_connection(&block)
@@ -253,7 +253,7 @@ def safe_bulk(actions)
         message = "Encountered a retryable error (will retry with exponential backoff)"
 
         # We treat 429s as a special case because these really aren't errors, but
-        # rather just ES telling us to back off a bit, which we do.
+        # rather just OpenSearch telling us to back off a bit, which we do.
         # The other retryable code is 503, which are true errors
         # Even though we retry the user should be made aware of these
         if e.response_code == 429

spec/integration/outputs/create_spec.rb

@@ -29,7 +29,7 @@ def get_es_output(action, id, version=nil, version_type=nil)
   before :each do
     @es = get_client
     # Delete all templates first.
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     @es.indices.delete_template(:name => "*")
     # This can fail if there are no indexes, ignore failure.
     @es.indices.delete(:index => "*") rescue nil

spec/integration/outputs/index_version_spec.rb

@@ -17,7 +17,7 @@
 
   before :each do
     # Delete all templates first.
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     es.indices.delete_template(:name => "*")
     # This can fail if there are no indexes, ignore failure.
     es.indices.delete(:index => "*") rescue nil
@@ -44,7 +44,7 @@
         }
       end
 
-      it "should default to ES version" do
+      it "should default to OpenSearch version" do
         subject.multi_receive([LogStash::Event.new("my_id" => "123", "message" => "foo")])
         r = es.get(:index => 'logstash-index', :type => doc_type, :id => "123", :refresh => true)
         expect(r["_version"]).to eq(1)

spec/integration/outputs/ingest_pipeline_spec.rb

@@ -39,7 +39,7 @@
     # Delete all templates first.
     require "elasticsearch"
 
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     @es = get_client
     @es.indices.delete_template(:name => "*")
 

spec/integration/outputs/metrics_spec.rb

@@ -26,7 +26,7 @@
   before :each do
     require "elasticsearch"
 
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     @es = get_client
     clean(@es)
     subject.register

spec/integration/outputs/no_opensearch_on_startup_spec.rb

@@ -30,7 +30,7 @@
     require "elasticsearch"
     allow(Stud).to receive(:stoppable_sleep)
 
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     @es = get_client
     @es.indices.delete_template(:name => "*")
     @es.indices.delete(:index => "*")

spec/integration/outputs/painless_update_spec.rb

@@ -26,7 +26,7 @@ def get_es_output( options={} )
   before :each do
     @es = get_client
     # Delete all templates first.
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     @es.indices.delete_template(:name => "*")
     # This can fail if there are no indexes, ignore failure.
     @es.indices.delete(:index => "*") rescue nil

spec/integration/outputs/retry_spec.rb

@@ -56,7 +56,7 @@ def mock_actions_with_response(*resp)
     require "elasticsearch"
     allow(Stud).to receive(:stoppable_sleep)
 
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     @es = get_client
     @es.indices.delete_template(:name => "*")
     @es.indices.delete(:index => "*")

spec/integration/outputs/templates_spec.rb

@@ -24,7 +24,7 @@
     # Delete all templates first.
     require "elasticsearch"
 
-    # Clean ES of data before we start.
+    # Clean OpenSearch of data before we start.
     @es = get_client
     @es.indices.delete_template(:name => "*")