Integrate Config Profiles + Refactoring

Config Profile Integration:
- Merge generated Configs from ConfigProfileGenerator with the default
  Config; Reason: Merging profile Configs with default Config asap
  ensures that profile Configs are "as complete as possible" while
  allowing profile Configs to "on-demand"-override values from the
  default Config.
- Adapt Augmenter to work with Config profiles: Select a Config on the
  basis of on msg:DeliveryRequest/Config/ProfileId, fall back to 'default'
  Config.
- Schema change: Make ProfileID optional.

Refactoring:
- Move Config-merging code from Augmenter into dedicated
  'ConfigProfileMerger' class.
- ConfigProfileGenerator: Clarify stream pipeline and comply with
  coding standard w.r.t. constant members.
- Add Augmenter test cases for profile selection.

3 files changed, 90 insertions, 52 deletions

diff --git a/src/main/java/at/gv/egiz/moazs/preprocess/ConfigProfileGenerator.java b/src/main/java/at/gv/egiz/moazs/preprocess/ConfigProfileGenerator.java
index cba776d..a0cf766 100644
--- a/src/main/java/at/gv/egiz/moazs/preprocess/ConfigProfileGenerator.java
+++ b/src/main/java/at/gv/egiz/moazs/preprocess/ConfigProfileGenerator.java
@@ -13,22 +13,28 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
-import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
 
 import static at.gv.zustellung.app2mzs.xsd.ConfigType.configTypeBuilder;
 import static at.gv.zustellung.app2mzs.xsd.ServerType.serverTypeBuilder;
+import static java.util.stream.Collectors.*;
 import static java.util.stream.Collectors.toMap;
 
 @Component
 public class ConfigProfileGenerator {
 
-    @Autowired
-    private Environment env;
+    private static final String PROFILE_PREFIX = "delivery-request-configuration-profiles.";
+    private static final String TNVZ_REQUEST_KEY = "perform-query-person-request";
+    private static final String MSG_URL_KEY = "msg.url";
 
-    private final String profilePrefix = "delivery-request-configuration-profiles.";
-    private final String tnvzRequestKey = "perform-query-person-request";
-    private final String msgUrlKey = "msg.url";
+    private final Environment env;
+    private final ConfigProfileMerger merger;
+
+    @Autowired
+    public ConfigProfileGenerator(Environment env, ConfigProfileMerger merger) {
+        this.env = env;
+        this.merger = merger;
+    }
 
     public Map<String, ConfigType> generate() {
         MutablePropertySources propSrcs = ((AbstractEnvironment) env).getPropertySources();
@@ -37,25 +43,29 @@ public class ConfigProfileGenerator {
                 .filter(ps -> ps instanceof EnumerablePropertySource)
                 .map(ps -> ((EnumerablePropertySource) ps).getPropertyNames())
                 .flatMap(Arrays::stream)
-                .filter(propName -> propName.startsWith(profilePrefix))
-                .map(name -> name.substring(name.indexOf(".") + 1))
-                .collect(
-                        Collectors.groupingBy(
-                                this::keepPrefix,
-                                Collectors.mapping(
-                                        this::removePrefix,
-                                        Collectors.toSet())));
-
-        return groupedKeys.entrySet().stream()
+                .filter(this::isConfigurationProfileProperty)
+                .map(this::removePrefix)
+                .collect(groupingBy(this::keepPrefix, mapping(this::removePrefix, toSet())));
+
+        Map<String, ConfigType> profiles = groupedKeys.entrySet().stream()
                 .collect(toMap(Entry::getKey, this::createConfig));
+
+        var defaultProfile = profiles.get("default");
+
+        return profiles.entrySet().stream()
+                .collect(toUnmodifiableMap(Entry::getKey, e -> merger.merge(e.getValue(), defaultProfile)));
+    }
+
+    private boolean isConfigurationProfileProperty(String propName) {
+        return propName.startsWith(PROFILE_PREFIX);
     }
 
     private String keepPrefix(String name) {
-        return name.substring(0, name.indexOf("."));
+        return name.substring(0, name.indexOf('.'));
     }
 
     private String removePrefix(String name) {
-        return name.substring(name.indexOf(".") + 1);
+        return name.substring(name.indexOf('.') + 1);
     }
 
     private ConfigType createConfig(Entry<String, Set<String>> entry) {
@@ -66,17 +76,17 @@ public class ConfigProfileGenerator {
 
         entry.getValue().stream()
                 .forEach(key -> {
-                    var assembledKey = profilePrefix + "." + profile + "." + key;
+                    var assembledKey = PROFILE_PREFIX + '.' + profile + '.' + key;
                     var value = env.getProperty(assembledKey);
                     values.put(key, value);
                 });
 
         var server = serverTypeBuilder()
-                .withZUSEUrlID(values.get(msgUrlKey))
+                .withZUSEUrlID(values.get(MSG_URL_KEY))
                 .build();
 
-        Boolean performQueryPersonRequest = values.get(tnvzRequestKey) == null
-                ? null : Boolean.getBoolean(values.get(tnvzRequestKey));
+        Boolean performQueryPersonRequest = values.get(TNVZ_REQUEST_KEY) == null
+                ? null : Boolean.getBoolean(values.get(TNVZ_REQUEST_KEY));
 
         return configTypeBuilder()
                 .withPerformQueryPersonRequest(performQueryPersonRequest)
diff --git a/src/main/java/at/gv/egiz/moazs/preprocess/ConfigProfileMerger.java b/src/main/java/at/gv/egiz/moazs/preprocess/ConfigProfileMerger.java
new file mode 100644
index 0000000..f25ec12
--- /dev/null
+++ b/src/main/java/at/gv/egiz/moazs/preprocess/ConfigProfileMerger.java
@@ -0,0 +1,42 @@
+package at.gv.egiz.moazs.preprocess;
+
+import at.gv.zustellung.app2mzs.xsd.ConfigType;
+import at.gv.zustellung.app2mzs.xsd.ServerType;
+import org.springframework.stereotype.Component;
+
+import static at.gv.zustellung.app2mzs.xsd.ConfigType.configTypeBuilder;
+import static at.gv.zustellung.app2mzs.xsd.ServerType.serverTypeBuilder;
+
+@Component
+public class ConfigProfileMerger {
+
+    public ConfigType merge(ConfigType primary, ConfigType fallback) {
+
+        var builder = configTypeBuilder(fallback);
+
+        if(primary != null) {
+
+            if(primary.getServer() != null) {
+                builder.withServer(merge(primary.getServer(), fallback.getServer()));
+            }
+
+            if(primary.isPerformQueryPersonRequest() != null) {
+                builder.withPerformQueryPersonRequest(primary.isPerformQueryPersonRequest());
+            }
+
+        }
+
+        return builder.build();
+
+    }
+
+    private ServerType merge(ServerType primary, ServerType fallback) {
+
+        var builder = serverTypeBuilder(fallback);
+
+        if (primary.getX509()      != null) builder.withX509     (primary.getX509()     );
+        if (primary.getZUSEUrlID() != null) builder.withZUSEUrlID(primary.getZUSEUrlID());
+
+        return builder.build();
+    }
+}
diff --git a/src/main/java/at/gv/egiz/moazs/preprocess/DeliveryRequestAugmenter.java b/src/main/java/at/gv/egiz/moazs/preprocess/DeliveryRequestAugmenter.java
index 623af38..7211f6d 100644
--- a/src/main/java/at/gv/egiz/moazs/preprocess/DeliveryRequestAugmenter.java
+++ b/src/main/java/at/gv/egiz/moazs/preprocess/DeliveryRequestAugmenter.java
@@ -3,23 +3,23 @@ package at.gv.egiz.moazs.preprocess;
 import at.gv.zustellung.app2mzs.xsd.ConfigType;
 import at.gv.zustellung.app2mzs.xsd.DeliveryRequestType;
 import at.gv.zustellung.app2mzs.xsd.DeliveryRequestType.DeliveryRequestTypeBuilder;
-import at.gv.zustellung.app2mzs.xsd.ServerType;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 import java.util.Map;
 
-import static at.gv.zustellung.app2mzs.xsd.ConfigType.configTypeBuilder;
-import static at.gv.zustellung.app2mzs.xsd.ServerType.serverTypeBuilder;
+import static at.gv.egiz.moazs.util.NullCoalesce.coalesce;
 
 @Component
 public class DeliveryRequestAugmenter {
 
-    private final ConfigType defaultMzsConfig;
+    private final ConfigProfileMerger merger;
+    private final Map<String, ConfigType> configs;
 
     @Autowired
-    public DeliveryRequestAugmenter(Map<String, ConfigType> deliveryRequestConfigs) {
-        this.defaultMzsConfig = deliveryRequestConfigs.get("default");
+    public DeliveryRequestAugmenter(Map<String, ConfigType> deliveryRequestConfigs, ConfigProfileMerger merger) {
+        this.configs = deliveryRequestConfigs;
+        this.merger = merger;
     }
 
     /**
@@ -30,40 +30,26 @@ public class DeliveryRequestAugmenter {
      */
     public DeliveryRequestType augment(DeliveryRequestType request) {
 
-        var config = merge(request.getConfig(), defaultMzsConfig);
+        var requestConfig = request.getConfig();
+
+        var fallbackConfig = determineProfileFromProfileId(requestConfig);
+
+        var config = merger.merge(requestConfig, fallbackConfig);
 
         return new DeliveryRequestTypeBuilder(request)
                 .withConfig(config)
                 .build();
     }
 
-    private ConfigType merge(ConfigType primary, ConfigType fallback) {
-
-        var builder = configTypeBuilder(fallback);
-
-        if(primary != null) {
-
-            if(primary.getServer() != null) {
-               builder.withServer(merge(primary.getServer(), fallback.getServer()));
-            }
-
-            if(primary.isPerformQueryPersonRequest() != null) {
-               builder.withPerformQueryPersonRequest(primary.isPerformQueryPersonRequest());
-            }
+    private ConfigType determineProfileFromProfileId(ConfigType requestConfig) {
 
+        if (requestConfig == null || requestConfig.getProfileID() == null) {
+            return configs.get("default");
         }
 
-        return builder.build();
+        var id = requestConfig.getProfileID();
 
+        return coalesce(configs.get(id), configs.get("default")).get();
     }
 
-    private ServerType merge(ServerType primary, ServerType fallback) {
-
-        var builder = serverTypeBuilder(fallback);
-
-        if (primary.getX509()      != null) builder.withX509     (primary.getX509()     );
-        if (primary.getZUSEUrlID() != null) builder.withZUSEUrlID(primary.getZUSEUrlID());
-
-        return builder.build();
-    }
 }