Merge pull request #34239 from vespa-engine/evgiz/add-deployment-spec-concerned-environments

Add deployment spec concerned environments

Author: hmusum

config-model-api/abi-spec.json

@@ -514,6 +514,7 @@
       "public boolean isEmpty()",
       "public java.util.Optional majorVersion()",
       "public java.util.List steps()",
+      "public java.util.Set concernedEnvironments()",
       "public java.util.Optional athenzDomain()",
       "public java.util.Optional athenzService()",
       "public java.util.Optional athenzService(com.yahoo.config.provision.InstanceName, com.yahoo.config.provision.Environment, com.yahoo.config.provision.RegionName)",
@@ -1918,4 +1919,4 @@
       "public final java.lang.String serviceName"
     ]
   }
-}
+}

config-model-api/src/main/java/com/yahoo/config/application/api/DeploymentSpec.java

@@ -19,13 +19,16 @@
 import java.io.Reader;
 import java.time.Duration;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.Set;
 import java.util.StringJoiner;
+import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import static java.util.stream.Collectors.joining;
@@ -179,6 +182,14 @@ private void validateApplicationEndpoints() {
     /** Returns the deployment steps of this in the order they will be performed */
     public List<Step> steps() { return steps; }
 
+    /** Returns the set of unique environments concerned by this deployment spec */
+    public Set<Environment> concernedEnvironments() {
+        return steps.stream().map(Step::zones)
+                .flatMap(Collection::stream)
+                .map(DeclaredZone::environment)
+                .collect(Collectors.toSet());
+    }
+
     /** Returns the Athenz domain set on the root tag, if any */
     public Optional<AthenzDomain> athenzDomain() { return athenzDomain; }