Remove quava dependency

Signed-off-by: Marinov Avgustin <Avgustin.Marinov@bosch.com>

Author: avgustinmm

CONTRIBUTING.md

@@ -23,7 +23,7 @@ Please read this if you intend to contribute to the project.
 
 ### Utility library usage
 
-hawkBit has currently both [guava](https://github.com/google/guava) and [Apache commons lang](https://commons.apache.org/proper/commons-lang/) on the classpath in several of its modules. However, we see introducing too many utility libraries problematic as we force these as transitive dependencies on hawkBit users. We in fact are looking into reducing them in future not adding new ones.
+hawkBit has currently [Apache commons lang](https://commons.apache.org/proper/commons-lang/) on the classpath in several of its modules. However, we see introducing too many utility libraries problematic as we force these as transitive dependencies on hawkBit users. We in fact are looking into reducing them in future not adding new ones.
 
 So we kindly ask contributors:
 
@@ -32,16 +32,8 @@ So we kindly ask contributors:
 * use utility functions in general based in the following priority:
   * use utility functions from JDK if feasible
   * use Spring utility classes if feasible
-  * use [guava](https://github.com/google/guava) if feasible
   * use [Apache commons lang](https://commons.apache.org/proper/commons-lang/) if feasible
 
-Note that the guava project for instance often documents where they think that JDK is having a similar functionality (e.g. their thoughts on  [Throwables.propagate](https://github.com/google/guava/wiki/Why-we-deprecated-Throwables.propagate)).
-
-Examples:
-
-* Prefer `Arrays.asList(...)` from JDK over guava's `Lists.newArrayList(...)`
-* Prefer `StringUtils` from Spring over guava's `Strings` Apache's `StringUtils`
-
 ### Test documentation
 
 Please documented the test cases that you contribute by means of [Allure](http://allure.qatools.ru) annotations and proper test method naming.

hawkbit-device-simulator/pom.xml

@@ -115,10 +115,6 @@
          <groupId>io.github.openfeign</groupId>
          <artifactId>feign-jackson</artifactId>
       </dependency>
-      <dependency>
-         <groupId>com.google.guava</groupId>
-         <artifactId>guava</artifactId>
-      </dependency>
       <dependency>
          <groupId>org.apache.httpcomponents</groupId>
          <artifactId>httpclient</artifactId>

hawkbit-device-simulator/src/main/java/org/eclipse/hawkbit/simulator/DeviceSimulatorUpdater.java

@@ -19,11 +19,13 @@
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
+import java.util.HexFormat;
 import java.util.List;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
+import org.apache.commons.io.IOUtils;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
@@ -45,9 +47,6 @@
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.StringUtils;
 
-import com.google.common.io.BaseEncoding;
-import com.google.common.io.ByteStreams;
-
 /**
  * Update simulation handler.
  */
@@ -267,7 +266,7 @@ private UpdateStatus readAndCheckDownloadUrl(final String url, final String gate
                     return new UpdateStatus(ResponseStatus.ERROR, message);
                 }
 
-                sha1HashResult = BaseEncoding.base16().lowerCase().encode(md.digest());
+                sha1HashResult = HexFormat.of().withLowerCase().formatHex(md.digest());
             }
 
             if (!sha1Hash.equalsIgnoreCase(sha1HashResult)) {
@@ -282,17 +281,13 @@ private UpdateStatus readAndCheckDownloadUrl(final String url, final String gate
 
         private static long getOverallRead(final CloseableHttpResponse response, final MessageDigest md)
                 throws IOException {
-
-            long overallread;
-
-            try (final OutputStream os = ByteStreams.nullOutputStream();
-                    final BufferedOutputStream bos = new BufferedOutputStream(new DigestOutputStream(os, md))) {
-
-                try (BufferedInputStream bis = new BufferedInputStream(response.getEntity().getContent())) {
-                    overallread = ByteStreams.copy(bis, bos);
+            long overallread = 0;
+            try (final BufferedInputStream bis = new BufferedInputStream(response.getEntity().getContent())) {
+                final byte[] buff = new byte[4 *1024];
+                for (int read; (read = bis.read(buff)) != -1; overallread += read) {
+                    md.update(buff, 0, read);
                 }
             }
-
             return overallread;
         }
 

hawkbit-device-simulator/src/main/java/org/eclipse/hawkbit/simulator/SimulationProperties.java

@@ -10,6 +10,7 @@
 package org.eclipse.hawkbit.simulator;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
 import java.util.Random;
@@ -21,8 +22,6 @@
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.stereotype.Component;
 
-import com.google.common.base.Splitter;
-
 /**
  * General simulator service properties.
  *
@@ -32,7 +31,7 @@
 // Exception for squid:S2245 : not security relevant random number generation
 @SuppressWarnings("squid:S2245")
 public class SimulationProperties {
-    private static final Splitter SPLITTER = Splitter.on(',').omitEmptyStrings().trimResults();
+
     private static final Random RANDOM = new Random();
 
     private String defaultTenant = "DEFAULT";
@@ -110,7 +109,9 @@ public String getRandom() {
         }
 
         private String getRandomElement() {
-            final List<String> options = SPLITTER.splitToList(random);
+            final List<String> options = Arrays.stream(random.split(","))
+                    .map(String::trim)
+                    .filter(s -> !s.isEmpty()).toList();
             return options.get(RANDOM.nextInt(options.size()));
         }
     }

hawkbit-device-simulator/src/main/java/org/eclipse/hawkbit/simulator/amqp/AmqpConfiguration.java

@@ -10,6 +10,7 @@
 package org.eclipse.hawkbit.simulator.amqp;
 
 import java.time.Duration;
+import java.util.HashMap;
 import java.util.Map;
 
 import org.eclipse.hawkbit.simulator.DeviceSimulatorRepository;
@@ -29,8 +30,6 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
-import com.google.common.collect.Maps;
-
 /**
  * The spring AMQP configuration to use a AMQP for communication with SP update
  * server.
@@ -81,7 +80,7 @@ Queue receiverConnectorQueueFromHawkBit(final AmqpProperties amqpProperties) {
     }
 
     private static Map<String, Object> getTTLMaxArgs() {
-        final Map<String, Object> args = Maps.newHashMapWithExpectedSize(2);
+        final Map<String, Object> args = new HashMap<>(2);
         args.put("x-message-ttl", Duration.ofDays(1).toMillis());
         args.put("x-max-length", 100_000);
         return args;

hawkbit-example-mgmt-simulator/pom.xml

@@ -61,9 +61,5 @@
          <groupId>io.github.openfeign</groupId>
          <artifactId>feign-jackson</artifactId>
       </dependency>
-      <dependency>
-         <groupId>com.google.guava</groupId>
-         <artifactId>guava</artifactId>
-      </dependency>
    </dependencies>
 </project>