skip snapshot version

Author: JoeWang1127

java-shared-dependencies/dependency-analyzer/src/main/java/com/google/cloud/DependencyAnalyzer.java

@@ -49,6 +49,9 @@ public AnalysisResult analyze(String bomPath) {
     try {
       Set<VersionKey> roots = getManagedDependenciesFromBom(Bom.readBom(Paths.get(bomPath)));
       for (VersionKey versionKey : roots) {
+        if (versionKey.isSnapshot()) {
+          continue;
+        }
         packageInfos.addAll(getPackageInfoFrom(versionKey));
       }
 

java-shared-dependencies/dependency-analyzer/src/main/java/com/google/cloud/model/VersionKey.java

@@ -20,6 +20,10 @@ public static VersionKey from(String system, String name, String version)
     return new VersionKey(pkg, name, version);
   }
 
+  public boolean isSnapshot() {
+    return version.endsWith("SNAPSHOT");
+  }
+
   @Override
   public String toString() {
     if (pkgManagement == PkgManagement.MAVEN) {