commit fafd16eb8cb095a2371ee1831e557405ade02ce8
Author: Begerad, Stefan <stefan@begerad.de>
Date:   Sat Aug 7 02:22:15 2021 -0400

    feat(files-age-rm): inital commit

diff --git a/files-age-rm/pom.xml b/files-age-rm/pom.xml
new file mode 100644
index 0000000..84b7dfe
--- /dev/null
+++ b/files-age-rm/pom.xml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>de.begerad.file-age-rm</groupId>
+    <artifactId>file-age-rm</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-slf4j-impl</artifactId>
+            <version>2.9.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.2.4</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <shadedArtifactAttached>true</shadedArtifactAttached>
+                            <transformers>
+                                <transformer implementation=
+                                                     "org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>de.begerad.fileagerm.Main</mainClass>
+                                </transformer>
+                            </transformers>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/files-age-rm/src/main/java/de/begerad/fileagerm/FileList.java b/files-age-rm/src/main/java/de/begerad/fileagerm/FileList.java
new file mode 100644
index 0000000..f0f383b
--- /dev/null
+++ b/files-age-rm/src/main/java/de/begerad/fileagerm/FileList.java
@@ -0,0 +1,43 @@
+package de.begerad.fileagerm;
+
+import java.io.File;
+import java.io.FileFilter;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class FileList {
+    private final String directory;
+
+    public FileList(String directory) {
+        this.directory = directory;
+    }
+
+    /**
+     *
+     * @return set containing list of file paths
+     */
+    public Set<String> listFilesUsingJavaIO() {
+        return Stream.of(new File(directory).listFiles())
+                .filter(file -> !file.isDirectory())
+                .map(File::getName)
+                .collect(Collectors.toSet());
+    }
+
+    /**
+     *
+     * @return array containing list of file names
+     */
+    public File[] listFilesUsingFileFilter() {
+        //Creating a File object for directory
+        File dir = new File(directory);
+        //Creating filter for directory files
+        FileFilter fileFilter = new FileFilter() {
+            public boolean accept(File dir) {
+                return dir.isFile();
+            }
+        };
+
+        return dir.listFiles(fileFilter);
+    }
+}
diff --git a/files-age-rm/src/main/java/de/begerad/fileagerm/Main.java b/files-age-rm/src/main/java/de/begerad/fileagerm/Main.java
new file mode 100644
index 0000000..18f9a4d
--- /dev/null
+++ b/files-age-rm/src/main/java/de/begerad/fileagerm/Main.java
@@ -0,0 +1,95 @@
+package de.begerad.fileagerm;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Calendar;
+import java.util.Set;
+
+public class Main {
+    public static String dirPath = "";
+
+    public final static Logger LOG = LoggerFactory.getLogger(Main.class);
+
+    public static void deleteFilesOlderThanNdays(int daysBack, String dirWay) {
+
+        File directory = new File(dirWay);
+        if (directory.exists()) {
+
+            File[] listFiles = directory.listFiles();
+            long purgeTime = System.currentTimeMillis() - (daysBack * 24 * 60 * 60 * 1000);
+            for (File listFile : listFiles) {
+                if (listFile.lastModified() < purgeTime) {
+                    if (!listFile.delete()) {
+                        System.err.println("Unable to delete file: " + listFile);
+                        Main.LOG.error("file could NOT be deleted: {}", listFiles);
+                    } else {
+
+                    }
+                } else {
+                    Main.LOG.debug("file is too young to be deleted");
+                }
+            }
+        } else {
+            Main.LOG.warn("directory does not exist");
+        }
+    }
+
+    public static void main(String[] args) {
+        LOG.debug("main() started...");
+
+        //check user input for directory
+        if (args.length < 1) {
+            System.out.println("Please enter directory as first parameter.");
+            return;
+        }
+
+        dirPath = args[0];
+        if (!(new File(dirPath).isDirectory())) {
+            System.out.println("first parameter: "
+                    + dirPath
+                    + " is NOT a valid directory.");
+            return;
+        }
+        try {
+            System.out.println("dir path: "
+                    + (new File(dirPath).getCanonicalPath()));
+            LOG.debug("dir path: {}",
+                    (new File(dirPath).getCanonicalPath()));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        FileList fileList = new FileList(dirPath);
+        File[] list = fileList.listFilesUsingFileFilter();
+        LOG.debug("List of files in the specified directory:");
+        if (list != null) {
+            for (File fileName : list) {
+                LOG.debug("{}", fileName);
+            }
+        } else {
+            LOG.warn("List of files is empty");
+        }
+
+        Set<String> setList = fileList.listFilesUsingJavaIO();
+        LOG.debug("List of files in the specified directory:");
+        for (String file : setList) {
+            LOG.debug("{}", file);
+        }
+
+        int age = 1;
+        long purgeTime = System.currentTimeMillis() - (age * 24L * 60L * 60L * 1000L);
+        LOG.debug("age in ms: {}", purgeTime);
+
+        Calendar cal = Calendar.getInstance();
+        cal.add(Calendar.DAY_OF_MONTH, age * -1);
+        purgeTime = cal.getTimeInMillis();
+        LOG.debug("age in ms: {}", purgeTime);
+
+        deleteFilesOlderThanNdays(age, dirPath);
+
+        LOG.debug("main() done.");
+    }
+}
diff --git a/files-age-rm/src/main/resources/log4j2.xml b/files-age-rm/src/main/resources/log4j2.xml
new file mode 100644
index 0000000..6a69742
--- /dev/null
+++ b/files-age-rm/src/main/resources/log4j2.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="INFO">
+  <Appenders>
+    <RollingFile name="rollingFile"
+		 fileName="log.txt"
+		 filePattern="log-%d{yyyy-MM-dd}.txt"
+		 ignoreExceptions="false"
+		 >
+      <PatternLayout>
+	<Pattern>[%-5p] %d{yyyy-MM-dd HH:mm:ss.SSS} %c{1} %m%n</Pattern>
+      </PatternLayout>
+      <Policies>
+	<SizeBasedTriggeringPolicy size="10MB" />
+      </Policies>
+      <DefaultRolloverStrategy max="5" />
+    </RollingFile>
+
+    <Console name="console" target="SYSTEM_OUT">
+      <PatternLayout   pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c{1} - %msg%n" />
+    </Console>
+  </Appenders>
+  <Loggers>
+    <Logger name="de.begerad" level="debug" additivity="true">
+      <appender-ref ref="rollingFile" level="debug" />
+    </Logger>
+    <Root level="debug" additivity="false">
+      <appender-ref ref="console" />
+    </Root>
+  </Loggers>
+
+</Configuration>