[#1580] Software Module & Distribution Set lock: add lock at db level (…

…#1643)

1. add _locked_ column in the tables
2. add _locked_ field to the JPA entities
3. add lock set/get at JPA level (with lock DS checking for complete)
4. along with that little reordering of code is made to make it more structured

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

hawkbit-core/src/main/java/org/eclipse/hawkbit/exception/SpServerError.java

@@ -204,7 +204,7 @@ public enum SpServerError {
      *
      */
     SP_DS_INCOMPLETE("hawkbit.server.error.distributionset.incomplete",
-            "Distribution set is assigned to a target that is incomplete (i.e. mandatory modules are missing)"),
+            "Distribution set is assigned/locked to a target that is incomplete (i.e. mandatory modules are missing)"),
 
     /**
     *

hawkbit-repository/hawkbit-repository-jpa/src/main/java/org/eclipse/hawkbit/repository/jpa/model/JpaArtifact.java

@@ -83,9 +83,10 @@ public JpaArtifact() {
      */
     public JpaArtifact(@NotEmpty final String sha1Hash, @NotNull final String filename,
             final SoftwareModule softwareModule) {
-        setSoftwareModule(softwareModule);
         this.sha1Hash = sha1Hash;
         this.filename = filename;
+        this.softwareModule = (JpaSoftwareModule) softwareModule;
+        this.softwareModule.addArtifact(this);
     }
 
     @Override
@@ -130,11 +131,6 @@ public SoftwareModule getSoftwareModule() {
         return softwareModule;
     }
 
-    public final void setSoftwareModule(final SoftwareModule softwareModule) {
-        this.softwareModule = (JpaSoftwareModule) softwareModule;
-        this.softwareModule.addArtifact(this);
-    }
-
     @Override
     public String getFilename() {
         return filename;