Update for next development version

Tag release

.editorconfig

@@ -0,0 +1,371 @@
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+max_line_length = 120
+tab_width = 4
+ij_continuation_indent_size = 8
+ij_formatter_off_tag = @formatter:off
+ij_formatter_on_tag = @formatter:on
+ij_formatter_tags_enabled = true
+ij_smart_tabs = false
+ij_wrap_on_typing = false
+
+[*.java]
+indent_style = tab
+ij_java_align_consecutive_assignments = false
+ij_java_align_consecutive_variable_declarations = false
+ij_java_align_group_field_declarations = false
+ij_java_align_multiline_annotation_parameters = false
+ij_java_align_multiline_array_initializer_expression = false
+ij_java_align_multiline_assignment = false
+ij_java_align_multiline_binary_operation = false
+ij_java_align_multiline_chained_methods = false
+ij_java_align_multiline_extends_list = false
+ij_java_align_multiline_for = false
+ij_java_align_multiline_method_parentheses = false
+ij_java_align_multiline_parameters = false
+ij_java_align_multiline_parameters_in_calls = false
+ij_java_align_multiline_parenthesized_expression = false
+ij_java_align_multiline_resources = false
+ij_java_align_multiline_ternary_operation = false
+ij_java_align_multiline_throws_list = false
+ij_java_align_subsequent_simple_methods = false
+ij_java_align_throws_keyword = false
+ij_java_annotation_parameter_wrap = normal
+ij_java_array_initializer_new_line_after_left_brace = false
+ij_java_array_initializer_right_brace_on_new_line = false
+ij_java_array_initializer_wrap = normal
+ij_java_assert_statement_colon_on_next_line = false
+ij_java_assert_statement_wrap = normal
+ij_java_assignment_wrap = normal
+ij_java_binary_operation_sign_on_next_line = false
+ij_java_binary_operation_wrap = normal
+ij_java_blank_lines_after_anonymous_class_header = 1
+ij_java_blank_lines_after_class_header = 1
+ij_java_blank_lines_after_imports = 1
+ij_java_blank_lines_after_package = 1
+ij_java_blank_lines_around_class = 1
+ij_java_blank_lines_around_field = 0
+ij_java_blank_lines_around_field_in_interface = 0
+ij_java_blank_lines_around_initializer = 1
+ij_java_blank_lines_around_method = 1
+ij_java_blank_lines_around_method_in_interface = 1
+ij_java_blank_lines_before_class_end = 0
+ij_java_blank_lines_before_imports = 1
+ij_java_blank_lines_before_method_body = 0
+ij_java_blank_lines_before_package = 0
+ij_java_block_brace_style = end_of_line
+ij_java_block_comment_at_first_column = true
+ij_java_call_parameters_new_line_after_left_paren = false
+ij_java_call_parameters_right_paren_on_new_line = false
+ij_java_call_parameters_wrap = normal
+ij_java_case_statement_on_separate_line = true
+ij_java_catch_on_new_line = false
+ij_java_class_annotation_wrap = split_into_lines
+ij_java_class_brace_style = end_of_line
+ij_java_class_count_to_use_import_on_demand = 9999
+ij_java_class_names_in_javadoc = 3
+ij_java_do_not_indent_top_level_class_members = false
+ij_java_do_not_wrap_after_single_annotation = false
+ij_java_do_while_brace_force = always
+ij_java_doc_add_blank_line_after_description = true
+ij_java_doc_add_blank_line_after_param_comments = false
+ij_java_doc_add_blank_line_after_return = false
+ij_java_doc_add_p_tag_on_empty_lines = true
+ij_java_doc_align_exception_comments = true
+ij_java_doc_align_param_comments = true
+ij_java_doc_do_not_wrap_if_one_line = false
+ij_java_doc_enable_formatting = true
+ij_java_doc_enable_leading_asterisks = true
+ij_java_doc_indent_on_continuation = false
+ij_java_doc_keep_empty_lines = true
+ij_java_doc_keep_empty_parameter_tag = true
+ij_java_doc_keep_empty_return_tag = true
+ij_java_doc_keep_empty_throws_tag = true
+ij_java_doc_keep_invalid_tags = true
+ij_java_doc_param_description_on_new_line = false
+ij_java_doc_preserve_line_breaks = false
+ij_java_doc_use_throws_not_exception_tag = true
+ij_java_else_on_new_line = false
+ij_java_entity_dd_suffix = EJB
+ij_java_entity_eb_suffix = Bean
+ij_java_entity_hi_suffix = Home
+ij_java_entity_lhi_prefix = Local
+ij_java_entity_lhi_suffix = Home
+ij_java_entity_li_prefix = Local
+ij_java_entity_pk_class = java.lang.Long
+ij_java_entity_vo_suffix = VO
+ij_java_enum_constants_wrap = split_into_lines
+ij_java_extends_keyword_wrap = normal
+ij_java_extends_list_wrap = normal
+ij_java_field_annotation_wrap = split_into_lines
+ij_java_finally_on_new_line = false
+ij_java_for_brace_force = always
+ij_java_for_statement_new_line_after_left_paren = false
+ij_java_for_statement_right_paren_on_new_line = false
+ij_java_for_statement_wrap = normal
+ij_java_generate_final_locals = true
+ij_java_generate_final_parameters = false
+ij_java_if_brace_force = always
+ij_java_imports_layout = $*,|,com.deviceinsight.**,|,net.centersight.**,|,*,|,java.**,|,javax.**
+ij_java_indent_case_from_switch = true
+ij_java_insert_inner_class_imports = false
+ij_java_insert_override_annotation = true
+ij_java_keep_blank_lines_before_right_brace = 2
+ij_java_keep_blank_lines_between_package_declaration_and_header = 2
+ij_java_keep_blank_lines_in_code = 2
+ij_java_keep_blank_lines_in_declarations = 2
+ij_java_keep_control_statement_in_one_line = false
+ij_java_keep_first_column_comment = false
+ij_java_keep_indents_on_empty_lines = false
+ij_java_keep_line_breaks = false
+ij_java_keep_multiple_expressions_in_one_line = false
+ij_java_keep_simple_blocks_in_one_line = false
+ij_java_keep_simple_classes_in_one_line = false
+ij_java_keep_simple_lambdas_in_one_line = false
+ij_java_keep_simple_methods_in_one_line = false
+ij_java_lambda_brace_style = end_of_line
+ij_java_layout_static_imports_separately = true
+ij_java_line_comment_add_space = false
+ij_java_line_comment_at_first_column = true
+ij_java_message_dd_suffix = EJB
+ij_java_message_eb_suffix = Bean
+ij_java_method_annotation_wrap = split_into_lines
+ij_java_method_brace_style = end_of_line
+ij_java_method_call_chain_wrap = on_every_item
+ij_java_method_parameters_new_line_after_left_paren = false
+ij_java_method_parameters_right_paren_on_new_line = false
+ij_java_method_parameters_wrap = normal
+ij_java_modifier_list_wrap = false
+ij_java_names_count_to_use_import_on_demand = 9999
+ij_java_parameter_annotation_wrap = normal
+ij_java_parentheses_expression_new_line_after_left_paren = false
+ij_java_parentheses_expression_right_paren_on_new_line = false
+ij_java_place_assignment_sign_on_next_line = false
+ij_java_prefer_longer_names = true
+ij_java_prefer_parameters_wrap = false
+ij_java_repeat_synchronized = true
+ij_java_replace_instanceof_and_cast = false
+ij_java_replace_null_check = true
+ij_java_replace_sum_lambda_with_method_ref = true
+ij_java_resource_list_new_line_after_left_paren = false
+ij_java_resource_list_right_paren_on_new_line = false
+ij_java_resource_list_wrap = normal
+ij_java_session_dd_suffix = EJB
+ij_java_session_eb_suffix = Bean
+ij_java_session_hi_suffix = Home
+ij_java_session_lhi_prefix = Local
+ij_java_session_lhi_suffix = Home
+ij_java_session_li_prefix = Local
+ij_java_session_si_suffix = Service
+ij_java_space_after_closing_angle_bracket_in_type_argument = false
+ij_java_space_after_colon = true
+ij_java_space_after_comma = true
+ij_java_space_after_comma_in_type_arguments = true
+ij_java_space_after_for_semicolon = true
+ij_java_space_after_quest = true
+ij_java_space_after_type_cast = true
+ij_java_space_before_annotation_array_initializer_left_brace = false
+ij_java_space_before_annotation_parameter_list = false
+ij_java_space_before_array_initializer_left_brace = true
+ij_java_space_before_catch_keyword = true
+ij_java_space_before_catch_left_brace = true
+ij_java_space_before_catch_parentheses = true
+ij_java_space_before_class_left_brace = true
+ij_java_space_before_colon = true
+ij_java_space_before_colon_in_foreach = true
+ij_java_space_before_comma = false
+ij_java_space_before_do_left_brace = true
+ij_java_space_before_else_keyword = true
+ij_java_space_before_else_left_brace = true
+ij_java_space_before_finally_keyword = true
+ij_java_space_before_finally_left_brace = true
+ij_java_space_before_for_left_brace = true
+ij_java_space_before_for_parentheses = true
+ij_java_space_before_for_semicolon = false
+ij_java_space_before_if_left_brace = true
+ij_java_space_before_if_parentheses = true
+ij_java_space_before_method_call_parentheses = false
+ij_java_space_before_method_left_brace = true
+ij_java_space_before_method_parentheses = false
+ij_java_space_before_opening_angle_bracket_in_type_parameter = false
+ij_java_space_before_quest = true
+ij_java_space_before_switch_left_brace = true
+ij_java_space_before_switch_parentheses = true
+ij_java_space_before_synchronized_left_brace = true
+ij_java_space_before_synchronized_parentheses = true
+ij_java_space_before_try_left_brace = true
+ij_java_space_before_try_parentheses = true
+ij_java_space_before_type_parameter_list = false
+ij_java_space_before_while_keyword = true
+ij_java_space_before_while_left_brace = true
+ij_java_space_before_while_parentheses = true
+ij_java_space_inside_one_line_enum_braces = false
+ij_java_space_within_empty_array_initializer_braces = false
+ij_java_space_within_empty_method_call_parentheses = false
+ij_java_space_within_empty_method_parentheses = false
+ij_java_spaces_around_additive_operators = true
+ij_java_spaces_around_assignment_operators = true
+ij_java_spaces_around_bitwise_operators = true
+ij_java_spaces_around_equality_operators = true
+ij_java_spaces_around_lambda_arrow = true
+ij_java_spaces_around_logical_operators = true
+ij_java_spaces_around_method_ref_dbl_colon = false
+ij_java_spaces_around_multiplicative_operators = true
+ij_java_spaces_around_relational_operators = true
+ij_java_spaces_around_shift_operators = true
+ij_java_spaces_around_type_bounds_in_type_parameters = true
+ij_java_spaces_around_unary_operator = false
+ij_java_spaces_within_angle_brackets = false
+ij_java_spaces_within_annotation_parentheses = false
+ij_java_spaces_within_array_initializer_braces = false
+ij_java_spaces_within_braces = false
+ij_java_spaces_within_brackets = false
+ij_java_spaces_within_cast_parentheses = false
+ij_java_spaces_within_catch_parentheses = false
+ij_java_spaces_within_for_parentheses = false
+ij_java_spaces_within_if_parentheses = false
+ij_java_spaces_within_method_call_parentheses = false
+ij_java_spaces_within_method_parentheses = false
+ij_java_spaces_within_parentheses = false
+ij_java_spaces_within_switch_parentheses = false
+ij_java_spaces_within_synchronized_parentheses = false
+ij_java_spaces_within_try_parentheses = false
+ij_java_spaces_within_while_parentheses = false
+ij_java_special_else_if_treatment = true
+ij_java_subclass_name_suffix = Impl
+ij_java_ternary_operation_signs_on_next_line = true
+ij_java_ternary_operation_wrap = on_every_item
+ij_java_test_name_suffix = Test
+ij_java_throws_keyword_wrap = normal
+ij_java_throws_list_wrap = normal
+ij_java_use_external_annotations = false
+ij_java_use_fq_class_names = false
+ij_java_use_single_class_imports = true
+ij_java_variable_annotation_wrap = split_into_lines
+ij_java_visibility = public
+ij_java_while_brace_force = always
+ij_java_while_on_new_line = false
+ij_java_wrap_comments = false
+ij_java_wrap_first_method_in_call_chain = false
+ij_java_wrap_long_lines = false
+
+[.editorconfig]
+ij_editorconfig_align_group_field_declarations = false
+ij_editorconfig_space_after_colon = false
+ij_editorconfig_space_after_comma = true
+ij_editorconfig_space_before_colon = false
+ij_editorconfig_space_before_comma = false
+ij_editorconfig_spaces_around_assignment_operators = true
+
+[{*.gradle.kts,*.kts,*.kt}]
+indent_style = tab
+ij_kotlin_align_in_columns_case_branch = false
+ij_kotlin_align_multiline_binary_operation = false
+ij_kotlin_align_multiline_extends_list = false
+ij_kotlin_align_multiline_method_parentheses = false
+ij_kotlin_align_multiline_parameters = false
+ij_kotlin_align_multiline_parameters_in_calls = false
+ij_kotlin_assignment_wrap = normal
+ij_kotlin_blank_lines_after_class_header = 0
+ij_kotlin_blank_lines_around_block_when_branches = 0
+ij_kotlin_block_comment_at_first_column = true
+ij_kotlin_call_parameters_new_line_after_left_paren = false
+ij_kotlin_call_parameters_right_paren_on_new_line = false
+ij_kotlin_call_parameters_wrap = normal
+ij_kotlin_catch_on_new_line = false
+ij_kotlin_class_annotation_wrap = split_into_lines
+ij_kotlin_continuation_indent_for_chained_calls = true
+ij_kotlin_continuation_indent_for_expression_bodies = true
+ij_kotlin_continuation_indent_in_argument_lists = true
+ij_kotlin_continuation_indent_in_elvis = true
+ij_kotlin_continuation_indent_in_if_conditions = true
+ij_kotlin_continuation_indent_in_parameter_lists = true
+ij_kotlin_continuation_indent_in_supertype_lists = true
+ij_kotlin_else_on_new_line = false
+ij_kotlin_enum_constants_wrap = normal
+ij_kotlin_extends_list_wrap = normal
+ij_kotlin_field_annotation_wrap = split_into_lines
+ij_kotlin_finally_on_new_line = false
+ij_kotlin_if_rparen_on_new_line = false
+ij_kotlin_import_nested_classes = false
+ij_kotlin_insert_whitespaces_in_simple_one_line_method = true
+ij_kotlin_keep_blank_lines_before_right_brace = 2
+ij_kotlin_keep_blank_lines_in_code = 2
+ij_kotlin_keep_blank_lines_in_declarations = 2
+ij_kotlin_keep_first_column_comment = true
+ij_kotlin_keep_indents_on_empty_lines = false
+ij_kotlin_keep_line_breaks = true
+ij_kotlin_lbrace_on_next_line = false
+ij_kotlin_line_comment_add_space = false
+ij_kotlin_line_comment_at_first_column = true
+ij_kotlin_method_annotation_wrap = split_into_lines
+ij_kotlin_method_call_chain_wrap = normal
+ij_kotlin_method_parameters_new_line_after_left_paren = false
+ij_kotlin_method_parameters_right_paren_on_new_line = false
+ij_kotlin_method_parameters_wrap = normal
+ij_kotlin_name_count_to_use_star_import = 2147483647
+ij_kotlin_name_count_to_use_star_import_for_members = 2147483647
+ij_kotlin_parameter_annotation_wrap = normal
+ij_kotlin_space_after_comma = true
+ij_kotlin_space_after_extend_colon = true
+ij_kotlin_space_after_type_colon = true
+ij_kotlin_space_before_catch_parentheses = true
+ij_kotlin_space_before_comma = false
+ij_kotlin_space_before_extend_colon = true
+ij_kotlin_space_before_for_parentheses = true
+ij_kotlin_space_before_if_parentheses = true
+ij_kotlin_space_before_lambda_arrow = true
+ij_kotlin_space_before_type_colon = false
+ij_kotlin_space_before_when_parentheses = true
+ij_kotlin_space_before_while_parentheses = true
+ij_kotlin_spaces_around_additive_operators = true
+ij_kotlin_spaces_around_assignment_operators = true
+ij_kotlin_spaces_around_equality_operators = true
+ij_kotlin_spaces_around_function_type_arrow = true
+ij_kotlin_spaces_around_logical_operators = true
+ij_kotlin_spaces_around_multiplicative_operators = true
+ij_kotlin_spaces_around_range = false
+ij_kotlin_spaces_around_relational_operators = true
+ij_kotlin_spaces_around_unary_operator = false
+ij_kotlin_spaces_around_when_arrow = true
+ij_kotlin_variable_annotation_wrap = normal
+ij_kotlin_while_on_new_line = false
+ij_kotlin_wrap_elvis_expressions = 1
+ij_kotlin_wrap_expression_body_functions = 1
+ij_kotlin_wrap_first_method_in_call_chain = false
+
+[{*.jhm,*.rng,*.wsdl,*.fxml,*.pom,*.xslt,*.jrxml,*.ant,*.xul,*.xsl,*.xsd,*.tld,*.jnlp,*.xml}]
+indent_style = tab
+ij_xml_block_comment_at_first_column = true
+ij_xml_keep_indents_on_empty_lines = false
+ij_xml_line_comment_at_first_column = true
+
+[{*.yml,*.yaml}]
+indent_size = 2
+ij_continuation_indent_size = 2
+ij_yaml_keep_indents_on_empty_lines = false
+ij_yaml_keep_line_breaks = true
+
+[{.asciidoctorconfig,*.ad,*.adoc,*.asciidoc}]
+ij_asciidoc_formatting_enabled = true
+ij_asciidoc_one_sentence_per_line = true
+
+[{.babelrc,.stylelintrc,.eslintrc,jest.config,*.bowerrc,*.jsb3,*.jsb2,*.avsc,*.json}]
+indent_size = 2
+ij_json_keep_blank_lines_in_code = 0
+ij_json_keep_indents_on_empty_lines = false
+ij_json_keep_line_breaks = true
+ij_json_space_after_colon = true
+ij_json_space_after_comma = true
+ij_json_space_before_colon = true
+ij_json_space_before_comma = false
+ij_json_spaces_within_braces = false
+ij_json_spaces_within_brackets = false
+ij_json_wrap_long_lines = false
+
+[{spring.schemas,spring.handlers,*.properties}]
+ij_properties_align_group_field_declarations = false

.mvn/wrapper/MavenWrapperDownloader.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.5";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.1/apache-maven-3.6.1-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.5/maven-wrapper-0.5.5.jar

.travis.yml

@@ -13,3 +13,5 @@ cache:
 install: /bin/true
 
 script: ./mvnw verify -B
+
+dist: trusty

README.adoc

@@ -1,116 +0,0 @@
-= Kafka Health Check
-
-:uri-build-status: https://travis-ci.org/deviceinsight/kafka-health-check
-:img-build-status: https://api.travis-ci.org/deviceinsight/kafka-health-check.svg?branch=master
-
-image:{img-build-status}[Build Status Badge,link={uri-build-status}]
-
-This library provides a kafka health check for spring boot actuator.
-
-== Usage
-
-Add the following dependency to your `pom.xml`
-
-[source,xml]
-....
-<dependency>
-    <groupId>com.deviceinsight.kafka</groupId>
-    <artifactId>kafka-health-check</artifactId>
-    <version>1.0.0</version>
-</dependency>
-....
-
-In the same maven module you can configure the topic, poll timeouts, subscription timeouts and the receive timeouts
-in the `application.yml`
-
-An example for an `application.yaml` is:
-
-[source,yaml]
-....
-kafka:
-  health:
-    topic: health-checks
-    sendReceiveTimeoutMs: 2500
-    pollTimeoutMs: 200
-    subscriptionTimeoutMs: 5000
-....
-
-The values shown are the defaults.
-
-IMPORTANT: Make sure the configured health check topic exists!
-
-[source,java]
-....
-@Bean
-@ConfigurationProperties("kafka.health")
-public KafkaHealthProperties kafkaHealthProperties() {
-    return new KafkaHealthProperties();
-}
-....
-
-[source,java]
-....
-@Bean
-public KafkaConsumingHealthIndicator kafkaConsumingHealthIndicator(KafkaHealthProperties kafkaProperties,
-        KafkaProperties processingProperties) {
-    return new KafkaConsumingHealthIndicator(kafkaHealthProperties, kafkaProperties.buildConsumerProperties(),
-            kafkaProperties.buildProducerProperties());
-}
-....
-
-Now if you call the actuator endpoint `actuator/health` you should see the following output:
-
-[source,json]
-....
-{
-   "status" : "UP",
-   "details" : {
-      "kafkaConsuming" : {
-         "status" : "UP"
-      }
-   }
-}
-....
-
-== Configuration
-
-|===
-|Property |Default |Description
-
-|kafka.health.topic |`health-checks` | Topic to subscribe to
-|kafka.health.sendReceiveTimeoutMs |2500 | The maximum time, in milliseconds, to wait for sending and receiving the message
-|kafka.health.pollTimeoutMs |200 | The time, in milliseconds, spent fetching the data from the topic
-|kafka.health.subscriptionTimeoutMs |5000 | The maximum time, in milliseconds, to wait for subscribing to topic
-
-|===
-
-== Releasing
-
-Creating a new release involves the following steps:
-
-. `./mvnw -DenableSshAgent=true jgitflow:release-start jgitflow:release-finish` +
-[NOTE]
-The `-DenableSshAgent=true` is only necessary, if you cloned the repository via SSH.
-. `git push origin master`
-. `git push --tags`
-. `git push origin develop`
-
-In order to deploy the release to Maven Central, you need to create an account at https://issues.sonatype.org and
-configure your account in `~/.m2/settings.xml`:
-
-[source,xml]
-....
-<settings>
-  <servers>
-    <server>
-      <id>ossrh</id>
-      <username>your-jira-id</username>
-      <password>your-jira-pwd</password>
-    </server>
-  </servers>
-</settings>
-....
-
-The account also needs access to the project on Maven Central. This can be requested by another project member.
-
-Then check out the release you want to deploy (`git checkout x.y.z`) and run `./mvnw deploy -Prelease`.

README.md

@@ -0,0 +1,105 @@
+# Kafka Health Check
+
+> **Note.** _forked from [deviceinsight/kafka-health-check](https://github.com/deviceinsight/kafka-health-check) due to long period of inactivity_
+
+This library provides a kafka health check for spring boot actuator.
+
+## Usage
+
+Add the following dependency to your `pom.xml`
+
+```xml
+<dependency>
+    <groupId>me.bvn13.kafka.health</groupId>
+    <artifactId>kafka-health-check</artifactId>
+    <version>1.5.5</version>
+</dependency>
+```
+
+In the same maven module you can configure the topic, poll timeouts and the reception timeouts
+in the `application.yaml`
+
+An example for an `application.yaml` is:
+
+```yaml
+kafka:
+  health:
+    topic: health-checks
+    sendReceiveTimeout: 2.5s
+    pollTimeout: 200ms
+```
+
+The values shown are the defaults.
+
+IMPORTANT: Make sure the configured health check topic exists!
+
+```java
+@Bean
+@ConfigurationProperties("kafka.health")
+public KafkaHealthProperties kafkaHealthProperties() {
+    return new KafkaHealthProperties();
+}
+```
+
+```java
+@Bean
+public KafkaConsumingHealthIndicator kafkaConsumingHealthIndicator(KafkaHealthProperties kafkaProperties,
+        KafkaProperties processingProperties) {
+    return new KafkaConsumingHealthIndicator(kafkaHealthProperties, processingProperties.buildConsumerProperties(),
+            processingProperties.buildProducerProperties());
+}
+```
+
+Now if you call the actuator endpoint `actuator/health` you should see the following output:
+
+```json
+{
+   "status" : "UP",
+   "details" : {
+      "kafkaConsuming" : {
+         "status" : "UP"
+      }
+   }
+}
+```
+
+## Configuration
+
+
+| Property                        | Default         | Description                                                                                                                                                                                                                                     |
+|---------------------------------|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| kafka.health.enabled            | false           | Enabling kafka health check                                                                                                                                                                                                                     |
+| kafka.health.topic              | `health-checks` | Topic to subscribe to                                                                                                                                                                                                                           |
+| kafka.health.sendReceiveTimeout | 2.5s            | The maximum time, given as [Duration](https://docs.spring.io/spring-boot/docs/2.1.9.RELEASE/reference/html/boot-features-external-config.html#boot-features-external-config-conversion-duration), to wait for sending and receiving the message.|
+| kafka.health.pollTimeout        | 200ms           | The time, given as [Duration](https://docs.spring.io/spring-boot/docs/2.1.9.RELEASE/reference/html/boot-features-external-config.html#boot-features-external-config-conversion-duration), spent fetching the data from the topic                |
+| kafka.health.cache.maximumSize  | 200             | Specifies the maximum number of entries the cache may contain.                                                                                                                                                                                  |
+
+
+
+## Releasing
+
+Creating a new release involves the following steps:
+
+1. `./mvnw gitflow:release-start gitflow:release-finish`
+2. `git push origin master`
+3. `git push --tags`
+4. `git push origin develop`
+
+In order to deploy the release to Maven Central, you need to create an account at https://issues.sonatype.org and
+configure your account in `~/.m2/settings.xml`:
+
+```xml
+<settings>
+  <servers>
+    <server>
+      <id>ossrh</id>
+      <username>your-jira-id</username>
+      <password>your-jira-pwd</password>
+    </server>
+  </servers>
+</settings>
+```
+
+The account also needs access to the project on Maven Central. This can be requested by another project member.
+
+Then check out the release you want to deploy (`git checkout x.y.z`) and run `./mvnw deploy -Prelease`.

changelog.adoc

@@ -1,6 +0,0 @@
-= KafkaHealthCheck
-:icons: font
-
-== Version 0.1.0
-
-* Develop kafka health check

changelog.md

@@ -0,0 +1,36 @@
+# KafkaHealthCheck
+
+## Version 1.5.3
+
+* Added SpringBootAutoConfiguration
+
+## Version 1.5.2
+
+* Changed maven group publication: switched into `me.bvn13.kafka.health`
+
+## Version 1.4.0
+
+* Got rid of `subscriptionTimeout` as a redundant timeout
+
+## Version 1.3.0
+
+* Health check timeouts can now be configured in `java.time.Duration` format. The timeouts can still be configured using
+  millisecond values (`long`) as well to stay compatible with old configurations.
+* Dependency versions are now managed by `spring-boot-dependencies`. [ISSUE-17](https://github.com/deviceinsight/kafka-health-check/issues/17)
+* As of now, cache metrics can be exposed. For this purpose, a corresponding MeterRegistry instance must be passed
+  when instantiating the Kafka Health Check. [ISSUE-20](https://github.com/deviceinsight/kafka-health-check/issues/20)
+* The cache size can now be configured via the property `kafka.health.cache.maximum-size`. The default value for the cache size is 200. [ISSUE-22](https://github.com/deviceinsight/kafka-health-check/issues/22)
+* Filtering messages that do not come from the same instance. [ISSUE-24](https://github.com/deviceinsight/kafka-health-check/issues/24)
+
+## Version 1.2.0
+
+* Reduce logging level of health check calls to `TRACE`.
+
+## Version 1.1.0
+
+* Make consumer groups unique by appending a random UUID when no group ID is configured explicitly.
+* Refactor health check strategy: Kafka polled continuously.
+
+## Version 1.0.0
+
+* Develop kafka health check

mvnw

@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven2 Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.5/maven-wrapper-0.5.5.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.5/maven-wrapper-0.5.5.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+        
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

mvnw.cmd

@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven2 Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.5/maven-wrapper-0.5.5.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.5/maven-wrapper-0.5.5.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%

pom.xml

@@ -4,14 +4,21 @@
 
 	<modelVersion>4.0.0</modelVersion>
 
-	<groupId>com.deviceinsight.kafka</groupId>
+	<groupId>me.bvn13.kafka.health</groupId>
 	<artifactId>kafka-health-check</artifactId>
-	<version>1.0.0-SNAPSHOT</version>
+	<version>1.5.6-SNAPSHOT</version>
 	<packaging>jar</packaging>
 
 	<name>Kafka Health Check</name>
 	<description>A kafka health check for spring boot actuator</description>
-	<url>https://github.com/deviceinsight/kafka-health-check</url>
+	<url>https://github.com/bvn13/kafka-health-check</url>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-dependencies</artifactId>
+		<version>2.7.1</version>
+		<relativePath />
+	</parent>
 
 	<properties>
 		<!-- Java -->
@@ -23,74 +30,59 @@
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
 		<!-- Versions -->
-		<junit.jupiter.version>5.3.2</junit.jupiter.version>
-		<docker-maven-plugin.version>0.27.2</docker-maven-plugin.version>
-		<jgitflow-maven-plugin.version>1.0-m5.1</jgitflow-maven-plugin.version>
-		<spring-boot.version>2.1.3.RELEASE</spring-boot.version>
-		<spring.kafka.version>2.2.4.RELEASE</spring.kafka.version>
-
-		<maven-source-plugin.version>3.0.1</maven-source-plugin.version>
-		<maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
-		<assertj-core.version>3.11.1</assertj-core.version>
-		<guava.version>27.1-jre</guava.version>
-		<nexus-staging-maven-plugin.version>1.6.8</nexus-staging-maven-plugin.version>
+		<nexus.url>https://s01.oss.sonatype.org</nexus.url>
+		<guava.version>30.1.1-jre</guava.version>
+		<maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>
+		<nexus-staging-maven-plugin.version>1.6.13</nexus-staging-maven-plugin.version>
 		<maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
-		<maven-javadoc-plugin.version>3.1.0</maven-javadoc-plugin.version>
+		<gitflow-maven-plugin.version>1.18.0</gitflow-maven-plugin.version>
 	</properties>
 
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-actuator</artifactId>
-			<version>${spring-boot.version}</version>
 			<scope>provided</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.kafka</groupId>
 			<artifactId>spring-kafka</artifactId>
-			<version>${spring.kafka.version}</version>
 			<scope>provided</scope>
 		</dependency>
 		<dependency>
-			<groupId>com.google.guava</groupId>
-			<artifactId>guava</artifactId>
-			<version>${guava.version}</version>
+			<groupId>com.github.ben-manes.caffeine</groupId>
+			<artifactId>caffeine</artifactId>
 		</dependency>
 
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
-			<artifactId>junit-jupiter-api</artifactId>
-			<version>${junit.jupiter.version}</version>
-			<scope>test</scope>
-		</dependency>
-		<dependency>
-			<groupId>org.junit.jupiter</groupId>
-			<artifactId>junit-jupiter-params</artifactId>
-			<version>${junit.jupiter.version}</version>
-			<scope>test</scope>
-		</dependency>
-		<dependency>
-			<groupId>org.junit.jupiter</groupId>
-			<artifactId>junit-jupiter-engine</artifactId>
-			<version>${junit.jupiter.version}</version>
+			<artifactId>junit-jupiter</artifactId>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.assertj</groupId>
 			<artifactId>assertj-core</artifactId>
-			<version>${assertj-core.version}</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-test</artifactId>
-			<version>${spring-boot.version}</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.kafka</groupId>
 			<artifactId>spring-kafka-test</artifactId>
-			<version>${spring.kafka.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.awaitility</groupId>
+			<artifactId>awaitility</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>com.google.guava</groupId>
+			<artifactId>guava</artifactId>
+			<version>${guava.version}</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
@@ -114,13 +106,16 @@
 					<version>${maven-surefire-plugin.version}</version>
 				</plugin>
 				<plugin>
-					<groupId>external.atlassian.jgitflow</groupId>
-					<artifactId>jgitflow-maven-plugin</artifactId>
-					<version>${jgitflow-maven-plugin.version}</version>
+					<groupId>com.amashchenko.maven.plugin</groupId>
+					<artifactId>gitflow-maven-plugin</artifactId>
+					<version>${gitflow-maven-plugin.version}</version>
 					<configuration>
-						<autoVersionSubmodules>true</autoVersionSubmodules>
-						<noDeploy>true</noDeploy>
-						<useReleaseProfile>false</useReleaseProfile>
+						<pushRemote>false</pushRemote>
+						<gitFlowConfig>
+							<developmentBranch>develop</developmentBranch>
+						</gitFlowConfig>
+						<incrementVersionAtFinish>true</incrementVersionAtFinish>
+						<versionDigitToIncrement>2</versionDigitToIncrement>
 					</configuration>
 				</plugin>
 			</plugins>
@@ -141,7 +136,15 @@
 
 	<developers>
 		<developer>
-			<id>ManuZiD</id>
+			<id>bvn13</id>
+			<name>Vyacheslav Boyko</name>
+			<email>dev@bvn13.me</email>
+			<roles>
+				<role>Developer</role>
+			</roles>
+		</developer>
+		<developer>
+			<id>ezienecker</id>
 			<name>Emanuel Zienecker</name>
 			<email>emanuel.zienecker@device-insight.com</email>
 			<roles>
@@ -159,10 +162,10 @@
 	</developers>
 
 	<scm>
-		<connection>scm:git:git://github.com/deviceinsight/kafka-health-check.git</connection>
-		<developerConnection>scm:git:ssh://git@github.com:deviceinsight/kafka-health-check.git</developerConnection>
+		<connection>scm:git:git://github.com/bvn13/kafka-health-check.git</connection>
+		<developerConnection>scm:git:ssh://git@github.com:bvn13/kafka-health-check.git</developerConnection>
 		<tag>HEAD</tag>
-		<url>https://github.com/deviceinsight/kafka-health-check.git</url>
+		<url>https://github.com/bvn13/kafka-health-check.git</url>
 	</scm>
 
 	<profiles>
@@ -173,7 +176,6 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-source-plugin</artifactId>
-						<version>${maven-source-plugin.version}</version>
 						<executions>
 							<execution>
 								<id>attach-sources</id>
@@ -187,7 +189,6 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-javadoc-plugin</artifactId>
-						<version>${maven-javadoc-plugin.version}</version>
 						<executions>
 							<execution>
 								<id>attach-javadocs</id>
@@ -197,14 +198,31 @@
 							</execution>
 						</executions>
 					</plugin>
+					<plugin>
+						<groupId>org.apache.maven.plugins</groupId>
+						<artifactId>maven-deploy-plugin</artifactId>
+						<version>${maven-deploy-plugin.version}</version>
+						<configuration>
+							<skip>true</skip>
+						</configuration>
+					</plugin>
 					<plugin>
 						<groupId>org.sonatype.plugins</groupId>
 						<artifactId>nexus-staging-maven-plugin</artifactId>
 						<version>${nexus-staging-maven-plugin.version}</version>
 						<extensions>true</extensions>
+						<executions>
+							<execution>
+								<id>default-deploy</id>
+								<phase>deploy</phase>
+								<goals>
+									<goal>deploy</goal>
+								</goals>
+							</execution>
+						</executions>
 						<configuration>
 							<serverId>ossrh</serverId>
-							<nexusUrl>https://oss.sonatype.org/</nexusUrl>
+							<nexusUrl>${nexus.url}</nexusUrl>
 							<autoReleaseAfterClose>true</autoReleaseAfterClose>
 						</configuration>
 					</plugin>
@@ -228,8 +246,12 @@
 			<distributionManagement>
 				<snapshotRepository>
 					<id>ossrh</id>
-					<url>https://oss.sonatype.org/content/repositories/snapshots</url>
+					<url>${nexus.url}/content/repositories/snapshots</url>
 				</snapshotRepository>
+				<repository>
+					<id>ossrh</id>
+					<url>${nexus.url}/service/local/staging/deploy/maven2/</url>
+				</repository>
 			</distributionManagement>
 
 			<pluginRepositories>

src/main/java/com/deviceinsight/kafka/health/KafkaCommunicationResult.java

@@ -1,43 +0,0 @@
-package com.deviceinsight.kafka.health;
-
-final class KafkaCommunicationResult {
-
-	private final String topic;
-
-	private final Exception exception;
-
-	private KafkaCommunicationResult(String topic) {
-		this.topic = topic;
-		this.exception = null;
-	}
-
-	private KafkaCommunicationResult(String topic, Exception exception) {
-		this.topic = topic;
-		this.exception = exception;
-	}
-
-	static KafkaCommunicationResult success(String topic) {
-		return new KafkaCommunicationResult(topic);
-	}
-
-	static KafkaCommunicationResult failure(String topic, Exception exception) {
-		return new KafkaCommunicationResult(topic, exception);
-	}
-
-	String getTopic() {
-		return topic;
-	}
-
-	Exception getException() {
-		return exception;
-	}
-
-	@Override
-	public String toString() {
-		return "KafkaCommunication{topic='" + topic + "', exception=" + exception + '}';
-	}
-
-	public boolean isFailure() {
-		return exception != null;
-	}
-}

src/main/java/com/deviceinsight/kafka/health/KafkaConsumingHealthIndicator.java

@@ -1,195 +0,0 @@
-package com.deviceinsight.kafka.health;
-
-import static java.util.concurrent.TimeUnit.MILLISECONDS;
-
-import com.google.common.annotations.VisibleForTesting;
-import org.apache.kafka.clients.consumer.Consumer;
-import org.apache.kafka.clients.consumer.ConsumerConfig;
-import org.apache.kafka.clients.consumer.ConsumerRebalanceListener;
-import org.apache.kafka.clients.consumer.KafkaConsumer;
-import org.apache.kafka.clients.producer.KafkaProducer;
-import org.apache.kafka.clients.producer.Producer;
-import org.apache.kafka.clients.producer.ProducerRecord;
-import org.apache.kafka.common.TopicPartition;
-import org.apache.kafka.common.serialization.StringDeserializer;
-import org.apache.kafka.common.serialization.StringSerializer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.boot.actuate.health.AbstractHealthIndicator;
-import org.springframework.boot.actuate.health.Health;
-
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-import java.time.Duration;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.UUID;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Future;
-import java.util.concurrent.RejectedExecutionException;
-import java.util.concurrent.SynchronousQueue;
-import java.util.concurrent.ThreadPoolExecutor;
-import java.util.concurrent.TimeoutException;
-import java.util.stream.StreamSupport;
-
-import javax.annotation.PostConstruct;
-import javax.annotation.PreDestroy;
-
-public class KafkaConsumingHealthIndicator extends AbstractHealthIndicator {
-
-	private static final Logger logger = LoggerFactory.getLogger(KafkaConsumingHealthIndicator.class);
-
-	private final Consumer<String, String> consumer;
-
-	private final Producer<String, String> producer;
-
-	private final String topic;
-	private final long sendReceiveTimeoutMs;
-	private final long pollTimeoutMs;
-	private final long subscriptionTimeoutMs;
-
-	private final ExecutorService executor;
-
-
-	public KafkaConsumingHealthIndicator(KafkaHealthProperties kafkaHealthProperties,
-			Map<String, Object> kafkaConsumerProperties, Map<String, Object> kafkaProducerProperties) {
-
-		this.topic = kafkaHealthProperties.getTopic();
-		this.sendReceiveTimeoutMs = kafkaHealthProperties.getSendReceiveTimeoutMs();
-		this.pollTimeoutMs = kafkaHealthProperties.getPollTimeoutMs();
-		this.subscriptionTimeoutMs = kafkaHealthProperties.getSubscriptionTimeoutMs();
-
-		Map<String, Object> kafkaConsumerPropertiesCopy = new HashMap<>(kafkaConsumerProperties);
-
-		setConsumerGroup(kafkaConsumerPropertiesCopy);
-
-		StringDeserializer deserializer = new StringDeserializer();
-		StringSerializer serializer = new StringSerializer();
-
-		this.consumer = new KafkaConsumer<>(kafkaConsumerPropertiesCopy, deserializer, deserializer);
-		this.producer = new KafkaProducer<>(kafkaProducerProperties, serializer, serializer);
-
-		this.executor = new ThreadPoolExecutor(0, 1, 0L, MILLISECONDS, new SynchronousQueue<>(),
-				new ThreadPoolExecutor.AbortPolicy());
-	}
-
-	@PostConstruct
-	void subscribeAndSendMessage() throws InterruptedException {
-		subscribeToTopic();
-		KafkaCommunicationResult kafkaCommunicationResult = sendAndReceiveMessage();
-		if (kafkaCommunicationResult.isFailure()) {
-			throw new RuntimeException("Kafka health check failed", kafkaCommunicationResult.getException());
-		}
-	}
-
-	@PreDestroy
-	void shutdown() {
-		executor.shutdown();
-		producer.close();
-		consumer.close();
-	}
-
-	private void setConsumerGroup(Map<String, Object> kafkaConsumerProperties) {
-		try {
-			kafkaConsumerProperties.putIfAbsent(ConsumerConfig.GROUP_ID_CONFIG,
-					"health-check-" + InetAddress.getLocalHost().getHostAddress());
-		} catch (UnknownHostException e) {
-			throw new IllegalStateException(e);
-		}
-	}
-
-	@VisibleForTesting
-	void subscribeToTopic() throws InterruptedException {
-
-		final CountDownLatch subscribed = new CountDownLatch(1);
-
-		logger.info("Subscribe to health check topic={}", topic);
-
-		consumer.subscribe(Collections.singleton(topic), new ConsumerRebalanceListener() {
-
-			@Override
-			public void onPartitionsRevoked(Collection<TopicPartition> partitions) {
-				// nothing to do her
-			}
-
-			@Override
-			public void onPartitionsAssigned(Collection<TopicPartition> partitions) {
-				logger.debug("Got partitions = {}", partitions);
-
-				if (!partitions.isEmpty()) {
-					subscribed.countDown();
-				}
-			}
-		});
-
-		consumer.poll(Duration.ofMillis(pollTimeoutMs));
-		if (!subscribed.await(subscriptionTimeoutMs, MILLISECONDS)) {
-			throw new RuntimeException("Subscription to kafka failed, topic=" + topic);
-		}
-	}
-
-	private KafkaCommunicationResult sendAndReceiveMessage() {
-
-		Future<Void> sendReceiveTask = null;
-
-		try {
-
-			sendReceiveTask = executor.submit(() -> {
-				sendAndReceiveKafkaMessage();
-				return null;
-			});
-
-			sendReceiveTask.get(sendReceiveTimeoutMs, MILLISECONDS);
-
-		} catch (ExecutionException e) {
-			logger.warn("Kafka health check execution failed.", e);
-			return KafkaCommunicationResult.failure(topic, e);
-		} catch (TimeoutException | InterruptedException e) {
-			logger.warn("Kafka health check timed out.", e);
-			sendReceiveTask.cancel(true);
-			return KafkaCommunicationResult.failure(topic, e);
-		} catch (RejectedExecutionException e) {
-			logger.debug("Ignore health check, already running...");
-		}
-		return KafkaCommunicationResult.success(topic);
-	}
-
-	private void sendAndReceiveKafkaMessage() throws Exception {
-
-		String message = UUID.randomUUID().toString();
-		long startTime = System.currentTimeMillis();
-
-		logger.debug("Send health check message = {}", message);
-		producer.send(new ProducerRecord<>(topic, message, message)).get(sendReceiveTimeoutMs, MILLISECONDS);
-
-		while (messageNotReceived(message)) {
-			logger.debug("Waiting for message={}", message);
-		}
-
-		logger.debug("Kafka health check succeeded. took= {} msec", System.currentTimeMillis() - startTime);
-	}
-
-
-	private boolean messageNotReceived(String message) {
-
-		return StreamSupport.stream(consumer.poll(Duration.ofMillis(pollTimeoutMs)).spliterator(), false)
-				.noneMatch(msg -> msg.key().equals(message) && msg.value().equals(message));
-	}
-
-
-	@Override
-	protected void doHealthCheck(Health.Builder builder) {
-		KafkaCommunicationResult kafkaCommunicationResult = sendAndReceiveMessage();
-
-		if (kafkaCommunicationResult.isFailure()) {
-			builder.down(kafkaCommunicationResult.getException())
-					.withDetail("topic", kafkaCommunicationResult.getTopic());
-		} else {
-			builder.up();
-		}
-	}
-}

src/main/java/com/deviceinsight/kafka/health/KafkaHealthProperties.java

@@ -1,41 +0,0 @@
-package com.deviceinsight.kafka.health;
-
-public class KafkaHealthProperties {
-
-	private String topic = "health-checks";
-	private long sendReceiveTimeoutMs = 2500;
-	private long pollTimeoutMs = 200;
-	private long subscriptionTimeoutMs = 5000;
-
-	public String getTopic() {
-		return topic;
-	}
-
-	public void setTopic(String topic) {
-		this.topic = topic;
-	}
-
-	public long getSendReceiveTimeoutMs() {
-		return sendReceiveTimeoutMs;
-	}
-
-	public void setSendReceiveTimeoutMs(long sendReceiveTimeoutMs) {
-		this.sendReceiveTimeoutMs = sendReceiveTimeoutMs;
-	}
-
-	public long getPollTimeoutMs() {
-		return pollTimeoutMs;
-	}
-
-	public void setPollTimeoutMs(long pollTimeoutMs) {
-		this.pollTimeoutMs = pollTimeoutMs;
-	}
-
-	public long getSubscriptionTimeoutMs() {
-		return subscriptionTimeoutMs;
-	}
-
-	public void setSubscriptionTimeoutMs(long subscriptionTimeoutMs) {
-		this.subscriptionTimeoutMs = subscriptionTimeoutMs;
-	}
-}

src/main/java/me/bvn13/kafka/health/KafkaCommunicationResult.java

@@ -0,0 +1,35 @@
+package me.bvn13.kafka.health;
+
+final class KafkaCommunicationResult {
+
+	private final Exception exception;
+
+	private KafkaCommunicationResult() {
+		this.exception = null;
+	}
+
+	private KafkaCommunicationResult(Exception exception) {
+		this.exception = exception;
+	}
+
+	static KafkaCommunicationResult success() {
+		return new KafkaCommunicationResult();
+	}
+
+	static KafkaCommunicationResult failure(Exception exception) {
+		return new KafkaCommunicationResult(exception);
+	}
+
+	Exception getException() {
+		return exception;
+	}
+
+	@Override
+	public String toString() {
+		return "KafkaCommunication{exception=" + exception + '}';
+	}
+
+	public boolean isFailure() {
+		return exception != null;
+	}
+}

src/main/java/me/bvn13/kafka/health/KafkaConsumingHealthIndicator.java

@@ -0,0 +1,247 @@
+package me.bvn13.kafka.health;
+
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.Tag;
+import io.micrometer.core.instrument.binder.cache.CaffeineCacheMetrics;
+import org.apache.kafka.clients.consumer.Consumer;
+import org.apache.kafka.clients.consumer.ConsumerConfig;
+import org.apache.kafka.clients.consumer.ConsumerRebalanceListener;
+import org.apache.kafka.clients.consumer.ConsumerRecords;
+import org.apache.kafka.clients.consumer.KafkaConsumer;
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.Producer;
+import org.apache.kafka.clients.producer.ProducerRecord;
+import org.apache.kafka.common.TopicPartition;
+import org.apache.kafka.common.serialization.StringDeserializer;
+import org.apache.kafka.common.serialization.StringSerializer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.BeanInitializationException;
+import org.springframework.boot.actuate.health.AbstractHealthIndicator;
+import org.springframework.boot.actuate.health.Health;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.time.Duration;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.RejectedExecutionException;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.stream.StreamSupport;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+
+public class KafkaConsumingHealthIndicator extends AbstractHealthIndicator {
+
+	private static final Logger logger = LoggerFactory.getLogger(KafkaConsumingHealthIndicator.class);
+	private static final String CONSUMER_GROUP_PREFIX = "health-check-";
+	private static final String CACHE_NAME = "kafka-health-check";
+
+	private final Consumer<String, String> consumer;
+	private final Producer<String, String> producer;
+
+	private final String topic;
+	private final Duration sendReceiveTimeout;
+	private final Duration pollTimeout;
+
+	private final ExecutorService executor;
+	private final AtomicBoolean running;
+	private final Cache<String, String> cache;
+	private final String consumerGroupId;
+
+	private KafkaCommunicationResult kafkaCommunicationResult;
+
+	public KafkaConsumingHealthIndicator(KafkaHealthProperties kafkaHealthProperties,
+			Map<String, Object> kafkaConsumerProperties, Map<String, Object> kafkaProducerProperties) {
+		this(kafkaHealthProperties, kafkaConsumerProperties, kafkaProducerProperties, null);
+	}
+
+	public KafkaConsumingHealthIndicator(KafkaHealthProperties kafkaHealthProperties,
+			Map<String, Object> kafkaConsumerProperties, Map<String, Object> kafkaProducerProperties,
+			MeterRegistry meterRegistry) {
+
+		logger.info("Initializing kafka health check with properties: {}", kafkaHealthProperties);
+		this.topic = kafkaHealthProperties.getTopic();
+		this.sendReceiveTimeout = kafkaHealthProperties.getSendReceiveTimeout();
+		this.pollTimeout = kafkaHealthProperties.getPollTimeout();
+
+		Map<String, Object> kafkaConsumerPropertiesCopy = new HashMap<>(kafkaConsumerProperties);
+
+		this.consumerGroupId = getUniqueConsumerGroupId(kafkaConsumerPropertiesCopy);
+		kafkaConsumerPropertiesCopy.put(ConsumerConfig.GROUP_ID_CONFIG, consumerGroupId);
+
+		StringDeserializer deserializer = new StringDeserializer();
+		StringSerializer serializer = new StringSerializer();
+
+		this.consumer = new KafkaConsumer<>(kafkaConsumerPropertiesCopy, deserializer, deserializer);
+		this.producer = new KafkaProducer<>(kafkaProducerProperties, serializer, serializer);
+
+		this.executor = Executors.newSingleThreadExecutor();
+		this.running = new AtomicBoolean(true);
+		this.cache = Caffeine.newBuilder()
+				.expireAfterWrite(sendReceiveTimeout)
+				.maximumSize(kafkaHealthProperties.getCache().getMaximumSize())
+				.build();
+
+		enableCacheMetrics(cache, meterRegistry);
+
+		this.kafkaCommunicationResult =
+				KafkaCommunicationResult.failure(new RejectedExecutionException("Kafka Health Check is starting."));
+	}
+
+	@PostConstruct
+	void subscribeAndSendMessage() throws InterruptedException {
+		subscribeToTopic();
+
+		if (kafkaCommunicationResult.isFailure()) {
+			throw new BeanInitializationException("Kafka health check failed", kafkaCommunicationResult.getException());
+		}
+
+		executor.submit(() -> {
+			while (running.get()) {
+				ConsumerRecords<String, String> records = consumer.poll(pollTimeout);
+				StreamSupport.stream(records.spliterator(), false)
+						.filter(record -> record.key() != null && record.key().contains(consumerGroupId))
+						.forEach(record -> cache.put(record.key(), record.value()));
+			}
+		});
+	}
+
+	@PreDestroy
+	void shutdown() {
+		running.set(false);
+		executor.shutdownNow();
+		producer.close();
+		consumer.close();
+	}
+
+	private String getUniqueConsumerGroupId(Map<String, Object> kafkaConsumerProperties) {
+		try {
+			String groupId = (String) kafkaConsumerProperties.getOrDefault(ConsumerConfig.GROUP_ID_CONFIG,
+					UUID.randomUUID().toString());
+			return CONSUMER_GROUP_PREFIX + groupId + "-" + InetAddress.getLocalHost().getHostAddress();
+		} catch (UnknownHostException e) {
+			throw new IllegalStateException(e);
+		}
+	}
+
+	private void subscribeToTopic() throws InterruptedException {
+
+		final AtomicBoolean subscribed = new AtomicBoolean(false);
+
+		logger.info("Subscribe to health check topic={}", topic);
+
+		consumer.subscribe(Collections.singleton(topic), new ConsumerRebalanceListener() {
+
+			@Override
+			public void onPartitionsRevoked(Collection<TopicPartition> partitions) {
+				// nothing to do here
+			}
+
+			@Override
+			public void onPartitionsAssigned(Collection<TopicPartition> partitions) {
+				logger.debug("Got partitions = {}", partitions);
+
+				if (!partitions.isEmpty()) {
+					subscribed.set(true);
+				}
+			}
+		});
+
+		consumer.poll(pollTimeout);
+		if (!subscribed.get()) {
+			throw new BeanInitializationException("Subscription to kafka failed, topic=" + topic);
+		}
+
+		this.kafkaCommunicationResult = KafkaCommunicationResult.success();
+	}
+
+	private String sendMessage() {
+
+		try {
+			return sendKafkaMessage();
+		} catch (ExecutionException e) {
+			logger.warn("Kafka health check execution failed.", e);
+			this.kafkaCommunicationResult = KafkaCommunicationResult.failure(e);
+		} catch (TimeoutException | InterruptedException e) {
+			logger.warn("Kafka health check timed out.", e);
+			this.kafkaCommunicationResult = KafkaCommunicationResult.failure(e);
+		} catch (RejectedExecutionException e) {
+			logger.debug("Ignore health check, already running...");
+		}
+
+		return null;
+	}
+
+	private String sendKafkaMessage() throws InterruptedException, ExecutionException, TimeoutException {
+
+		String message = UUID.randomUUID().toString();
+		String key = createKeyFromMessageAndConsumerGroupId(message);
+
+		logger.trace("Send health check message = {}", message);
+
+		producer.send(new ProducerRecord<>(topic, key, message))
+				.get(sendReceiveTimeout.toMillis(), MILLISECONDS);
+
+		return message;
+	}
+
+	@Override
+	protected void doHealthCheck(Health.Builder builder) {
+		String expectedMessage = sendMessage();
+		if (expectedMessage == null) {
+			goDown(builder);
+			return;
+		}
+
+		long startTime = System.currentTimeMillis();
+		while (true) {
+			String key = createKeyFromMessageAndConsumerGroupId(expectedMessage);
+			String receivedMessage = cache.getIfPresent(key);
+			if (expectedMessage.equals(receivedMessage)) {
+
+				builder.up();
+				return;
+			} else if (System.currentTimeMillis() - startTime > sendReceiveTimeout.toMillis()) {
+
+				if (kafkaCommunicationResult.isFailure()) {
+					goDown(builder);
+				} else {
+					builder.down(new TimeoutException("Sending and receiving took longer than " + sendReceiveTimeout))
+							.withDetail("topic", topic);
+				}
+
+				return;
+			}
+		}
+	}
+
+	private void goDown(Health.Builder builder) {
+		builder.down(kafkaCommunicationResult.getException()).withDetail("topic", topic);
+	}
+
+	private void enableCacheMetrics(Cache<String, String> cache, MeterRegistry meterRegistry) {
+		if (meterRegistry == null) {
+			return;
+		}
+
+		CaffeineCacheMetrics.monitor(meterRegistry, cache, CACHE_NAME,
+				Collections.singletonList(Tag.of("instance", consumerGroupId)));
+	}
+
+	private String createKeyFromMessageAndConsumerGroupId(String message) {
+		return message + "-" + consumerGroupId;
+	}
+}

src/main/java/me/bvn13/kafka/health/KafkaHealthAutoConfiguration.java

@@ -0,0 +1,32 @@
+package me.bvn13.kafka.health;
+
+import org.springframework.boot.actuate.health.AbstractHealthIndicator;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ConditionalOnClass(AbstractHealthIndicator.class)
+@ConditionalOnProperty(name = "kafka.health.enabled", havingValue = "true")
+public class KafkaHealthAutoConfiguration {
+
+	@Bean
+	@ConditionalOnMissingBean(KafkaHealthProperties.class)
+	@ConfigurationProperties("kafka.health")
+	public KafkaHealthProperties kafkaHealthProperties() {
+		return new KafkaHealthProperties();
+	}
+
+	@Bean
+	@ConditionalOnMissingBean(KafkaConsumingHealthIndicator.class)
+	public KafkaConsumingHealthIndicator kafkaConsumingHealthIndicator(KafkaHealthProperties kafkaHealthProperties,
+			KafkaProperties kafkaProperties) {
+		return new KafkaConsumingHealthIndicator(kafkaHealthProperties, kafkaProperties.buildConsumerProperties(),
+				kafkaProperties.buildProducerProperties());
+	}
+
+}

src/main/java/me/bvn13/kafka/health/KafkaHealthCheckCacheProperties.java

@@ -0,0 +1,19 @@
+package me.bvn13.kafka.health;
+
+public class KafkaHealthCheckCacheProperties {
+
+	private int maximumSize = 200;
+
+	public int getMaximumSize() {
+		return maximumSize;
+	}
+
+	public void setMaximumSize(int maximumSize) {
+		this.maximumSize = maximumSize;
+	}
+
+	@Override
+	public String toString() {
+		return "CacheProperties{maximumSize=" + maximumSize + '}';
+	}
+}

src/main/java/me/bvn13/kafka/health/KafkaHealthProperties.java

@@ -0,0 +1,60 @@
+package me.bvn13.kafka.health;
+
+import java.time.Duration;
+
+public class KafkaHealthProperties {
+
+	private String topic = "health-checks";
+	private Duration sendReceiveTimeout = Duration.ofMillis(2500);
+	private Duration pollTimeout = Duration.ofMillis(200);
+	private KafkaHealthCheckCacheProperties cache = new KafkaHealthCheckCacheProperties();
+
+	public String getTopic() {
+		return topic;
+	}
+
+	public void setTopic(String topic) {
+		this.topic = topic;
+	}
+
+	public Duration getSendReceiveTimeout() {
+		return sendReceiveTimeout;
+	}
+
+	public void setSendReceiveTimeout(Duration sendReceiveTimeout) {
+		this.sendReceiveTimeout = sendReceiveTimeout;
+	}
+
+	@Deprecated
+	public void setSendReceiveTimeoutMs(long sendReceiveTimeoutMs) {
+		setSendReceiveTimeout(Duration.ofMillis(sendReceiveTimeoutMs));
+	}
+
+	public Duration getPollTimeout() {
+		return pollTimeout;
+	}
+
+	public void setPollTimeout(Duration pollTimeout) {
+		this.pollTimeout = pollTimeout;
+	}
+
+	@Deprecated
+	public void setPollTimeoutMs(long pollTimeoutMs) {
+		setPollTimeout(Duration.ofMillis(pollTimeoutMs));
+	}
+
+	public KafkaHealthCheckCacheProperties getCache() {
+		return cache;
+	}
+
+	public void setCache(KafkaHealthCheckCacheProperties cache) {
+		this.cache = cache;
+	}
+
+	@Override
+	public String toString() {
+		return "KafkaHealthProperties{" + "topic='" + topic + '\'' + ", sendReceiveTimeout=" + sendReceiveTimeout +
+				", pollTimeout=" + pollTimeout + ", cacheProperties=" +
+				cache + '}';
+	}
+}

src/main/resources/META-INF/spring.factories

@@ -0,0 +1 @@
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=me.bvn13.kafka.health.KafkaHealthAutoConfiguration

src/test/java/me/bvn13/kafka/health/KafkaConsumingHealthIndicatorTest.java

@@ -1,12 +1,15 @@
-package com.deviceinsight.kafka.health;
+package me.bvn13.kafka.health;
 
-import static com.deviceinsight.kafka.health.KafkaConsumingHealthIndicatorTest.TOPIC;
+import static me.bvn13.kafka.health.KafkaConsumingHealthIndicatorTest.TOPIC;
 import static org.assertj.core.api.Assertions.assertThat;
 
 import kafka.server.KafkaServer;
 import org.apache.kafka.clients.consumer.Consumer;
 import org.apache.kafka.common.serialization.StringDeserializer;
-import org.junit.jupiter.api.*;
+import org.awaitility.Awaitility;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.actuate.health.Health;
@@ -25,7 +28,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 @ExtendWith(SpringExtension.class)
-@EmbeddedKafka(topics = {TOPIC})
+@EmbeddedKafka(topics = TOPIC)
 public class KafkaConsumingHealthIndicatorTest {
 
 	static final String TOPIC = "health-checks";
@@ -64,15 +67,14 @@ public class KafkaConsumingHealthIndicatorTest {
 		final KafkaConsumingHealthIndicator healthIndicator =
 				new KafkaConsumingHealthIndicator(kafkaHealthProperties, kafkaProperties.buildConsumerProperties(),
 						kafkaProperties.buildProducerProperties());
-		healthIndicator.subscribeToTopic();
+		healthIndicator.subscribeAndSendMessage();
 
 		Health health = healthIndicator.health();
 		assertThat(health.getStatus()).isEqualTo(Status.UP);
 
 		shutdownKafka();
 
-		health = healthIndicator.health();
-		assertThat(health.getStatus()).isEqualTo(Status.DOWN);
+		Awaitility.await().untilAsserted(() -> assertThat(healthIndicator.health().getStatus()).isEqualTo(Status.DOWN));
 	}
 
 	private void shutdownKafka() {

src/test/java/me/bvn13/kafka/health/KafkaHealthPropertiesTest.java

@@ -0,0 +1,55 @@
+package me.bvn13.kafka.health;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.params.provider.Arguments.arguments;
+
+import com.google.common.collect.ImmutableMap;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.springframework.boot.context.properties.bind.Binder;
+import org.springframework.boot.context.properties.source.ConfigurationPropertySource;
+import org.springframework.boot.context.properties.source.MapConfigurationPropertySource;
+
+import java.time.Duration;
+import java.util.stream.Stream;
+
+public class KafkaHealthPropertiesTest {
+
+	// @formatter:off
+	private static final ConfigurationPropertySource DURATION_PROPERTY_SOURCE = new MapConfigurationPropertySource(ImmutableMap.of(
+			"kafka.health.topic", "custom-topic",
+			"kafka.health.send-receive-timeout", "1m",
+			"kafka.health.poll-timeout", "2s",
+			"kafka.health.cache.maximum-size", "42"
+	));
+
+	private static final ConfigurationPropertySource MILLISECONDS_PROPERTY_SOURCE = new MapConfigurationPropertySource(ImmutableMap.of(
+			"kafka.health.topic", "custom-topic",
+			"kafka.health.send-receive-timeout-ms", "60000",
+			"kafka.health.poll-timeout-ms", "2000",
+			"kafka.health.cache.maximum-size", "42"
+	));
+	// @formatter:on
+
+	@ParameterizedTest(name = "using {0} based setters")
+	@MethodSource("configurationPropertySources")
+	@SuppressWarnings("unused")
+	public void test_that_properties_bind_to_KafkaHealthProperties(String sourceName,
+			ConfigurationPropertySource propertySource) {
+
+		KafkaHealthProperties kafkaHealthProperties =
+				new Binder(propertySource).bind("kafka.health", KafkaHealthProperties.class).get();
+
+		assertThat(kafkaHealthProperties.getTopic()).isEqualTo("custom-topic");
+		assertThat(kafkaHealthProperties.getSendReceiveTimeout()).isEqualTo(Duration.ofMinutes(1));
+		assertThat(kafkaHealthProperties.getPollTimeout()).isEqualTo(Duration.ofSeconds(2));
+		assertThat(kafkaHealthProperties.getCache().getMaximumSize()).isEqualTo(42);
+	}
+
+	static Stream<Arguments> configurationPropertySources() {
+		return Stream.of(arguments("Duration", DURATION_PROPERTY_SOURCE),
+				arguments("long (milliseconds)", MILLISECONDS_PROPERTY_SOURCE));
+	}
+
+}