fix TechDebt - Remove Guava as direct dependency #7379

app/common/util/pom.xml

@@ -98,11 +98,6 @@
       <artifactId>jsr305</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>com.google.guava</groupId>
-      <artifactId>guava</artifactId>
-    </dependency>
-
     <!-- Testing -->
     <dependency>
       <groupId>junit</groupId>

app/common/util/src/main/java/io/syndesis/common/util/cache/LRUCacheManager.java

@@ -41,15 +41,15 @@ public void evictAll() {
     @Override
     public <K, V> Cache<K, V> getCache(final String name, boolean soft) {
         Cache<K, V> cache = (Cache<K, V>) caches.computeIfAbsent(name, n -> this.newCache(soft));
-        if ((soft && !(cache instanceof GuavaSoftCache)) || (!soft && (cache instanceof GuavaSoftCache))) {
+        if ((soft && !(cache instanceof LRUSoftCache)) || (!soft && (cache instanceof LRUSoftCache))) {
             LOG.warn("Cache {} is being used in mixed 'soft' and 'hard' mode", name);
         }
         return cache;
     }
 
     private <K, V> Cache<K, V> newCache(boolean soft) {
         if (soft) {
-            return new GuavaSoftCache<>(maxElements);
+            return new LRUSoftCache<>(maxElements);
         }
         return new LRUDefaultCache<>(maxElements);
     }

app/common/util/src/test/java/io/syndesis/common/util/cache/LRUSoftCacheTest.java

@@ -40,7 +40,7 @@ public void testSyndesisSoftCacheEmptiedOnHeapFull() {
 
     @Test
     public void testGuavaSoftCacheEmptiedOnHeapFull() {
-        Cache<String, byte[]> cache = new GuavaSoftCache<>(MAX_ELEMENTS);
+        Cache<String, byte[]> cache = new LRUSoftCache<>(MAX_ELEMENTS);
         doTest(cache);
     }