[CRV-226] Adding ServiceType#GLOBAL_SECURITY_FILTER + utility method

chorspec/src/main/java/eu/chorevolution/chors/ChorSpecUtils.java

@@ -20,12 +20,28 @@ import eu.chorevolution.datamodel.ChoreographyService;
 import eu.chorevolution.datamodel.DeployedService;
 import eu.chorevolution.datamodel.ServiceDependency;
 import eu.chorevolution.datamodel.ServiceType;
+import java.util.ArrayList;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
 import java.util.stream.Collectors;
 
 public final class ChorSpecUtils {
 
+    public static List<String> findGlobalSecurityFilterURLs(final Choreography chorSpec) {
+        List<String> result = new ArrayList<>();
+        chorSpec.getServiceGroups().forEach((serviceGroup) -> {
+            result.addAll(serviceGroup.getServices().stream().
+                    filter((ChoreographyService cs) -> cs instanceof DeployedService).
+                    filter((ChoreographyService dep)
+                            -> ((DeployedService) dep).getServiceType() == ServiceType.GLOBAL_SECURITY_FILTER).
+                    map(dep -> ((DeployedService) dep).getUrl()).
+                    collect(Collectors.toList()));
+        });
+
+        return result;
+    }
+
     public static String findSecurityFilterURL(final Choreography chorSpec, final ChoreographyService service) {
         Set<ChoreographyService> candidates = new HashSet<>();
         chorSpec.getServiceGroups().forEach((serviceGroup) -> {

chorspec/src/main/java/eu/chorevolution/datamodel/ServiceType.java

@@ -26,6 +26,7 @@ public enum ServiceType {
     BINDING_COMPONENT,
     COORDINATION_DELEGATE,
     PROTOCOL_ADAPTER,
+    GLOBAL_SECURITY_FILTER,
     SECURITY_FILTER,
     GENERIC_SERVICE