initial commit

.gitignore

+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

build.bat

+.\gradlew clean build
\ No newline at end of file

build.gradle

+plugins {
+	id 'org.springframework.boot' version '2.7.3'
+	id 'io.spring.dependency-management' version '1.0.13.RELEASE'
+	id 'java'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '17'
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-amqp'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.amqp:spring-rabbit-test'
+	implementation 'org.springframework.boot:spring-boot-starter-json'
+	// https://mvnrepository.com/artifact/org.json/json
+	implementation group: 'org.json', name: 'json', version: '20220320'
+
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

gradlew

+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original 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
+#
+#      https://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.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$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=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

+rootProject.name = 'dead-letter'

src/main/java/com/example/deadletter/DeadLetterApplication.java

+package com.example.deadletter;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+
+import java.io.IOException;
+import java.util.concurrent.TimeoutException;
+
+@SpringBootApplication
+public class DeadLetterApplication {
+
+    public static void main(String[] args) throws IOException, TimeoutException {
+        ConfigurableApplicationContext context = SpringApplication.run(DeadLetterApplication.class, args);
+        DeadLetterQueueService deadLetterQueueService = context.getBean("deadLetterQueueService", DeadLetterQueueService.class);
+        deadLetterQueueService.setup(args);
+    }
+
+}

src/main/java/com/example/deadletter/DeadLetterQueueService.java

+package com.example.deadletter;
+
+import com.example.deadletter.dto.QueueData;
+import org.json.JSONObject;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.*;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.ArrayList;
+import java.util.Base64;
+import java.util.List;
+
+@Service
+public class DeadLetterQueueService {
+
+    @Value("${rabbitMQ.host}")
+    String host;
+
+    @Value("${rabbitMQ.ui.port}")
+    int managementPort;
+
+    @Value("${rabbitMQ.username}")
+    String username;
+
+    @Value("${rabbitMQ.password}")
+    String password;
+
+    @Value("${rabbitMQ.vhost}")
+    String vhost;
+
+    private final RestTemplate restTemplate = new RestTemplate();
+
+    public void setup(String[] args) {
+
+        if (args.length == 0) {
+            args = getAllQueue();
+        }
+        String deadLetterExchange = "DLX";
+        createDeadLetterExchange(deadLetterExchange);
+
+
+        for (String queue : args) {
+
+            System.out.println("\n\nQUEUE NAME : " + queue);
+            if (!checkQueuePresent(queue)) {
+                System.out.println("QUEUE NAME INVALID");
+                continue;
+            }
+            createDeadLetterQueue(queue, deadLetterExchange);
+            setDLXPolicy(queue, deadLetterExchange);
+        }
+
+    }
+
+    private void createDeadLetterExchange(String deadLetterExchange) {
+
+        String apiUrl = "http://" + host + ":" + managementPort + "/api/exchanges";
+        String wholeUrl = apiUrl + "/" + vhost + "/" + deadLetterExchange;
+
+
+        JSONObject jsonObject = new JSONObject();
+        jsonObject.put("type", "topic");
+        jsonObject.put("durable", true);
+
+        ResponseEntity<String> responseEntity = null;
+
+
+        try {
+            responseEntity = restTemplate.exchange(wholeUrl,
+                    HttpMethod.GET,
+                    new HttpEntity<>(getHeader()),
+                    String.class
+            );
+
+            if (responseEntity.getStatusCode() == HttpStatus.OK) {
+                System.out.printf("%n dead letter exchange %s already exists %n", deadLetterExchange);
+                return;
+            } else {
+                System.out.print(responseEntity.getStatusCode() + "\n");
+                return;
+            }
+
+        } catch (HttpClientErrorException ex) {
+
+            System.out.printf("%n dead letter exchange %s does not exist %n", deadLetterExchange);
+
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+        }
+
+        try {
+            responseEntity = restTemplate.exchange(wholeUrl,
+                    HttpMethod.PUT,
+                    new HttpEntity<>(jsonObject.toString(), getHeader()),
+                    String.class
+            );
+
+
+            System.out.printf("%n created dead letter exchange: %s ", deadLetterExchange);
+            System.out.print(responseEntity.getStatusCode() + "\n");
+
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+
+    private void setDLXPolicy(String queueName, String deadLetterExchange) {
+
+        JSONObject jsonObject2 = new JSONObject();
+        jsonObject2.put("dead-letter-exchange", deadLetterExchange);
+        jsonObject2.put("dead-letter-routing-key", queueName);
+
+        JSONObject jsonObject = new JSONObject();
+        jsonObject.put("pattern", "^" + queueName + "$");
+        jsonObject.put("definition", jsonObject2);
+        jsonObject.put("priority", 1);
+        jsonObject.put("apply-to", "queues");
+
+        ResponseEntity<String> responseEntity = null;
+
+        String policyName = "dlx-" + queueName;
+
+        String apiUrl = "http://" + host + ":" + managementPort + "/api/policies";
+        String wholeUrl = apiUrl + "/" + vhost + "/" + policyName;
+
+        try {
+            responseEntity = restTemplate.exchange(wholeUrl,
+                    HttpMethod.PUT,
+                    new HttpEntity<>(jsonObject.toString(), getHeader()),
+                    String.class
+            );
+
+            System.out.printf("%n setting policy %s for queue %s ", policyName, queueName);
+            System.out.println(responseEntity.getStatusCode());
+
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+
+        }
+
+    }
+
+    void createDeadLetterQueue(String queueName, String deadLetterExchange) {
+        String deadLetterQueue = "dl-" + queueName;
+        ResponseEntity<String> responseEntity = null;
+        String apiUrl = "http://" + host + ":" + managementPort + "/api/queues";
+        String wholeUrl = apiUrl + "/" + vhost + "/" + deadLetterQueue + "?if-empty=true&if-unused=true";
+
+        if (checkQueuePresent(deadLetterQueue)) {
+            System.out.printf("%n dead letter queue already present : %s ", deadLetterQueue);
+
+            System.out.printf("%n try to delete dead letter queue: %s ", deadLetterQueue);
+
+            try {
+                responseEntity = restTemplate.exchange(wholeUrl,
+                        HttpMethod.DELETE,
+                        new HttpEntity<>(getHeader()),
+                        String.class
+                );
+
+                System.out.print(responseEntity.getStatusCode() + "\n");
+
+            } catch (Exception ex) {
+                System.out.println(ex.getMessage());
+                return;
+            }
+
+        }
+
+        JSONObject jsonObject = new JSONObject();
+        jsonObject.put("auto_delete", false);
+        jsonObject.put("durable", true);
+
+        try {
+            responseEntity = restTemplate.exchange(wholeUrl,
+                    HttpMethod.PUT,
+                    new HttpEntity<>(jsonObject.toString(), getHeader()),
+                    String.class
+            );
+
+            System.out.printf("%n created dead letter queue: %s ", deadLetterQueue);
+            System.out.print(responseEntity.getStatusCode() + "\n");
+
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+
+        }
+
+
+        apiUrl = "http://" + host + ":" + managementPort + "/api/bindings";
+        wholeUrl = apiUrl + "/" + vhost + "/e/" + deadLetterExchange + "/q/" + deadLetterQueue;
+
+        jsonObject = new JSONObject();
+        jsonObject.put("routing_key", queueName);
+
+        try {
+            responseEntity = restTemplate.exchange(wholeUrl,
+                    HttpMethod.POST,
+                    new HttpEntity<>(jsonObject.toString(), getHeader()),
+                    String.class
+            );
+
+
+            System.out.printf("%n created binding for exchange %s and queue %s ", deadLetterExchange, deadLetterQueue);
+            System.out.print(responseEntity.getStatusCode() + "\n");
+
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+
+        }
+
+    }
+
+    boolean checkQueuePresent(String queueName) {
+        String apiUrl = "http://" + host + ":" + managementPort + "/api/queues";
+        String wholeUrl = apiUrl + "/" + vhost + "/" + queueName;
+
+
+        ResponseEntity<String> responseEntity = null;
+
+
+        try {
+            responseEntity = restTemplate.exchange(wholeUrl,
+                    HttpMethod.GET,
+                    new HttpEntity<>(getHeader()),
+                    String.class
+            );
+
+            if (responseEntity.getStatusCode() == HttpStatus.OK) {
+                return true;
+            }
+            System.out.print(responseEntity.getStatusCode() + "\n");
+            return false;
+        } catch (HttpClientErrorException ex) {
+
+            System.out.printf("%n dead letter queue %s does not exist %n", queueName);
+            return false;
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+        }
+
+    }
+
+    HttpHeaders getHeader() {
+        String authStr = username + ":" + password;
+        String base64Creds = Base64.getEncoder().encodeToString(authStr.getBytes());
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Authorization", "Basic " + base64Creds);
+
+        return headers;
+    }
+
+    String[] getAllQueue() {
+        String apiUrl = "http://" + host + ":" + managementPort + "/api/queues";
+        String wholeUrl = apiUrl + "/" + vhost;
+
+
+        ResponseEntity<List<QueueData>> responseEntity = null;
+
+
+        try {
+            responseEntity = restTemplate.exchange(wholeUrl,
+                    HttpMethod.GET,
+                    new HttpEntity<>(getHeader()),
+                    new ParameterizedTypeReference<List<QueueData>>() {
+                    });
+
+
+            if (responseEntity.getStatusCode() == HttpStatus.OK) {
+                List<String> queueList = new ArrayList<>();
+
+                for (QueueData queueData : responseEntity.getBody()) {
+                    //reject dl queues
+                    if (queueData.getName().startsWith("dl-")) {
+                        continue;
+                    }
+                    queueList.add(queueData.getName());
+                }
+                return queueList.toArray(new String[0]);
+            }
+            throw new RuntimeException(String.valueOf(responseEntity.getBody()));
+
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+}
+

src/main/java/com/example/deadletter/dto/QueueData.java

+package com.example.deadletter.dto;
+
+public class QueueData {
+    String name;
+
+    public QueueData() {
+    }
+
+    public QueueData(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return "QueueData{" +
+                "name='" + name + '\'' +
+                '}';
+    }
+}
+
+

src/main/java/com/example/deadletter/dto/QueueResponse.java

+package com.example.deadletter.dto;
+
+import java.util.List;
+
+public class QueueResponse {
+    List<QueueData> queueData;
+
+    public QueueResponse() {
+    }
+
+    public QueueResponse(List<QueueData> queueData) {
+        this.queueData = queueData;
+    }
+
+    public List<QueueData> getQueueData() {
+        return queueData;
+    }
+
+    public void setQueueData(List<QueueData> queueData) {
+        this.queueData = queueData;
+    }
+
+    @Override
+    public String toString() {
+        return "QueueResponse{" +
+                "queueData=" + queueData +
+                '}';
+    }
+}
+

src/main/resources/application.properties

+rabbitMQ.host=localhost
+rabbitMQ.vhost=pmis
+rabbitMQ.username=guest
+rabbitMQ.password=guest
+rabbitMQ.ui.port=15672
\ No newline at end of file

src/test/java/com/example/deadletter/DeadLetterApplicationTests.java

+package com.example.deadletter;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class DeadLetterApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}