Feature/appconfigurator validation migration

src/main/groovy/com/cloudogu/gitops/Feature.groovy

@@ -1,12 +1,10 @@
 package com.cloudogu.gitops
 
-import com.cloudogu.gitops.utils.MapUtils
+import com.cloudogu.gitops.config.Config
 import com.cloudogu.gitops.utils.TemplatingEngine
 import groovy.util.logging.Slf4j
 import groovy.yaml.YamlSlurper
 
-import java.nio.file.Path
-
 /**
  * A single tool to be deployed by GOP.
  * 
@@ -86,4 +84,15 @@ abstract class Feature {
      */
     protected void validate() { }
 
+    /**
+     * Hook for preConfigInit. Optional.
+     * Feature should throw RuntimeException to stop immediately.
+     */
+    void preConfigInit(Config configToSet) { }
+
+    /**
+     * Hook for postConfigInit. Optional.
+     * Feature should throw RuntimeException to stop immediately.
+     */
+    void postConfigInit(Config configToSet) { }
 }

src/main/groovy/com/cloudogu/gitops/cli/GitopsPlaygroundCli.groovy

@@ -7,7 +7,9 @@ import ch.qos.logback.classic.encoder.PatternLayoutEncoder
 import ch.qos.logback.classic.spi.ILoggingEvent
 import ch.qos.logback.core.ConsoleAppender
 import com.cloudogu.gitops.Application
+import com.cloudogu.gitops.Feature
 import com.cloudogu.gitops.config.ApplicationConfigurator
+import com.cloudogu.gitops.config.CommonFeatureConfig
 import com.cloudogu.gitops.config.Config
 import com.cloudogu.gitops.config.schema.JsonSchemaValidator
 import com.cloudogu.gitops.destroy.Destroyer
@@ -60,7 +62,12 @@ class GitopsPlaygroundCli {
             return ReturnCode.SUCCESS
         }
 
+        def context = createApplicationContext()
+        Application app = context.getBean(Application)
+
         def config = readConfigs(args)
+        runHook(app, 'preConfigInit', config)
+
         if (config.application.outputConfigFile) {
             println(config.toYaml(false))
             return ReturnCode.SUCCESS
@@ -70,8 +77,9 @@ class GitopsPlaygroundCli {
         // eg a simple docker run .. --help should not fail with connection refused
         config = applicationConfigurator.initConfig(config)
         log.debug("Actual config: ${config.toYaml(true)}")
+        runHook(app, 'postConfigInit', config)
 
-        def context = createApplicationContext()
+        context = createApplicationContext()
         register(config, context)
 
         if (config.application.destroy) {
@@ -87,7 +95,7 @@ class GitopsPlaygroundCli {
             if (!confirm("Applying gitops playground to kubernetes cluster '${k8sClient.currentContext}'.", config)) {
                 return ReturnCode.NOT_CONFIRMED
             }
-            Application app = context.getBean(Application)
+            app = context.getBean(Application)
             app.start()
 
             printWelcomeScreen()
@@ -208,8 +216,6 @@ class GitopsPlaygroundCli {
         log.debug("Writing CLI params into config")
         Config mergedConfig = Config.fromMap(mergedConfigs)
         new CommandLine(mergedConfig).parseArgs(args)
-
-        applicationConfigurator.validateConfig(mergedConfig)
 
         return mergedConfig
     }
@@ -241,4 +247,15 @@ class GitopsPlaygroundCli {
   |----------------------------------------------------------------------------------------------|
 '''
     }
+
+    static void runHook(Application app, String methodName, def config) {
+        ([new CommonFeatureConfig(), *app.features]).each { feature ->
+            // Executing only the method if the derived feature class has implemented the passed methodName
+            def mm = feature.metaClass.getMetaMethod(methodName, config)
+            if (mm && mm.declaringClass.theClass != Feature) {
+                log.debug("Executing ${methodName} hook on feature ${feature.class.name}")
+                mm.invoke(feature, config)
+            }
+        }
+    }
 }

src/main/groovy/com/cloudogu/gitops/config/ApplicationConfigurator.groovy

@@ -4,9 +4,6 @@ package com.cloudogu.gitops.config
 import com.cloudogu.gitops.utils.FileSystemUtils
 import groovy.util.logging.Slf4j
 
-import static com.cloudogu.gitops.config.Config.ContentRepoType
-import static com.cloudogu.gitops.config.Config.ContentSchema.ContentRepositorySchema
-
 @Slf4j
 class ApplicationConfigurator {
 
@@ -32,8 +29,6 @@ class ApplicationConfigurator {
 
         addFeatureConfig(newConfig)
 
-        validateEnvConfigForArgoCDOperator(newConfig)
-
         evaluateBaseUrl(newConfig)
 
         setResourceInclusionsCluster(newConfig)
@@ -258,95 +253,6 @@ class ApplicationConfigurator {
         return newUrl
     }
 
-    /**
-     * Make sure that config does not contain contradictory values.
-     * Throws RuntimeException which meaningful message, if invalid.
-     */
-    void validateConfig(Config configToSet) {
-        validateScmmAndJenkinsAreBothSet(configToSet)
-        validateMirrorReposHelmChartFolderSet(configToSet)
-        validateContent(configToSet)
-    }
-
-    private void validateMirrorReposHelmChartFolderSet(Config configToSet) {
-        if (configToSet.application.mirrorRepos && !configToSet.application.localHelmChartFolder) {
-            // This should only happen when run outside the image, i.e. during development
-            throw new RuntimeException("Missing config for localHelmChartFolder.\n" +
-                    "Either run inside the official container image or setting env var " +
-                    "LOCAL_HELM_CHART_FOLDER='charts' after running 'scripts/downloadHelmCharts.sh' from the repo")
-        }
-    }
-
-    static void validateContent(Config config) {
-        config.content.repos.each { repo ->
-
-            if (!repo.url) {
-                throw new RuntimeException("content.repos requires a url parameter.")
-            }
-            if (repo.target) {
-                if (repo.target.count('/') == 0) {
-                    throw new RuntimeException("content.target needs / to separate namespace/group from repo name. Repo: ${repo.url}")
-                }
-            }
-
-            switch (repo.type) {
-                case ContentRepoType.COPY:
-                    if (!repo.target) {
-                        throw new RuntimeException("content.repos.type ${ContentRepoType.COPY} requires content.repos.target to be set. Repo: ${repo.url}")
-                    }
-                    break
-                case ContentRepoType.FOLDER_BASED:
-                    if (repo.target) {
-                        throw new RuntimeException("content.repos.type ${ContentRepoType.FOLDER_BASED} does not support target parameter. Repo: ${repo.url}")
-                    }
-                    if (repo.targetRef) {
-                        throw new RuntimeException("content.repos.type ${ContentRepoType.FOLDER_BASED} does not support targetRef parameter. Repo: ${repo.url}")
-                    }
-                    break
-                case ContentRepoType.MIRROR:
-                    if (!repo.target) {
-                        throw new RuntimeException("content.repos.type ${ContentRepoType.MIRROR} requires content.repos.target to be set. Repo: ${repo.url}")
-                    }
-                    if (repo.path != ContentRepositorySchema.DEFAULT_PATH) {
-                        throw new RuntimeException("content.repos.type ${ContentRepoType.MIRROR} does not support path. Current path: ${repo.path}. Repo: ${repo.url}")
-                    }
-                    if (repo.templating) {
-                        throw new RuntimeException("content.repos.type ${ContentRepoType.MIRROR} does not support templating. Repo: ${repo.url}")
-                    }
-                    break
-            }
-        }
-    }
-
-    private void validateScmmAndJenkinsAreBothSet(Config configToSet) {
-        if (configToSet.jenkins.active &&
-                (configToSet.scm.scmManager.url && !configToSet.jenkins.url ||
-                        !configToSet.scm.scmManager.url && configToSet.jenkins.url)) {
-            throw new RuntimeException('When setting jenkins URL, scmm URL must also be set and the other way round')
-        }
-    }
-
-    // Validate that the env list has proper maps with 'name' and 'value'
-    private static void validateEnvConfigForArgoCDOperator(Config configToSet) {
-        // Exit early if not in operator mode or if env list is empty
-        if (!configToSet.features.argocd.operator || !configToSet.features.argocd.env) {
-            log.debug("Skipping features.argocd.env validation: operator mode is disabled or env list is empty.")
-            return
-        }
-
-        List<Map> env = configToSet.features.argocd.env as List<Map<String, String>>
-
-        log.info("Validating env list in features.argocd.env with {} entries.", env.size())
-
-        env.each { map ->
-            if (!(map instanceof Map) || !map.containsKey('name') || !map.containsKey('value')) {
-                throw new IllegalArgumentException("Each env variable in features.argocd.env must be a map with 'name' and 'value'. Invalid entry found: $map")
-            }
-        }
-
-        log.info("Env list validation for features.argocd.env completed successfully.")
-    }
-
     private void setResourceInclusionsCluster(Config configToSet) {
         // Return early if NOT deploying via operator
         if (!configToSet.features.argocd.operator) {

src/main/groovy/com/cloudogu/gitops/config/CommonFeatureConfig.groovy

@@ -0,0 +1,34 @@
+package com.cloudogu.gitops.config
+
+import com.cloudogu.gitops.Feature
+import groovy.util.logging.Slf4j
+
+@Slf4j
+class CommonFeatureConfig extends Feature {
+    @Override
+    void preConfigInit(Config configToSet) {
+        validateConfig(configToSet)
+    }
+
+    /**
+     * Make sure that config does not contain contradictory values.
+     * Throws RuntimeException which meaningful message, if invalid.
+     */
+    void validateConfig(Config configToSet) {
+        validateMirrorReposHelmChartFolderSet(configToSet)
+    }
+
+    private void validateMirrorReposHelmChartFolderSet(Config configToSet) {
+        if (configToSet.application.mirrorRepos && !configToSet.application.localHelmChartFolder) {
+            // This should only happen when run outside the image, i.e. during development
+            throw new RuntimeException("Missing config for localHelmChartFolder.\n" +
+                    "Either run inside the official container image or setting env var " +
+                    "LOCAL_HELM_CHART_FOLDER='charts' after running 'scripts/downloadHelmCharts.sh' from the repo")
+        }
+    }
+
+    @Override
+    boolean isEnabled() {
+        return false
+    }
+}

src/main/groovy/com/cloudogu/gitops/features/ContentLoader.groovy

@@ -73,6 +73,48 @@ class ContentLoader extends Feature {
 
     }
 
+    @Override
+    void preConfigInit(Config configToSet) {
+        config.content.repos.each { repo ->
+
+            if (!repo.url) {
+                throw new RuntimeException("content.repos requires a url parameter.")
+            }
+            if (repo.target) {
+                if (repo.target.count('/') == 0) {
+                    throw new RuntimeException("content.target needs / to separate namespace/group from repo name. Repo: ${repo.url}")
+                }
+            }
+
+            switch (repo.type) {
+                case ContentRepoType.COPY:
+                    if (!repo.target) {
+                        throw new RuntimeException("content.repos.type ${ContentRepoType.COPY} requires content.repos.target to be set. Repo: ${repo.url}")
+                    }
+                    break
+                case ContentRepoType.FOLDER_BASED:
+                    if (repo.target) {
+                        throw new RuntimeException("content.repos.type ${ContentRepoType.FOLDER_BASED} does not support target parameter. Repo: ${repo.url}")
+                    }
+                    if (repo.targetRef) {
+                        throw new RuntimeException("content.repos.type ${ContentRepoType.FOLDER_BASED} does not support targetRef parameter. Repo: ${repo.url}")
+                    }
+                    break
+                case ContentRepoType.MIRROR:
+                    if (!repo.target) {
+                        throw new RuntimeException("content.repos.type ${ContentRepoType.MIRROR} requires content.repos.target to be set. Repo: ${repo.url}")
+                    }
+                    if (repo.path != ContentRepositorySchema.DEFAULT_PATH) {
+                        throw new RuntimeException("content.repos.type ${ContentRepoType.MIRROR} does not support path. Current path: ${repo.path}. Repo: ${repo.url}")
+                    }
+                    if (repo.templating) {
+                        throw new RuntimeException("content.repos.type ${ContentRepoType.MIRROR} does not support templating. Repo: ${repo.url}")
+                    }
+                    break
+            }
+        }
+    }
+
     void createImagePullSecrets() {
         if (config.registry.createImagePullSecrets) {
             String registryUsername = config.registry.readOnlyUsername ?: config.registry.username

src/main/groovy/com/cloudogu/gitops/features/argocd/ArgoCD.groovy

@@ -71,6 +71,27 @@ class ArgoCD extends Feature {
         config.features.argocd.active
     }
 
+    @Override
+    void postConfigInit(Config configToSet) {
+        // Exit early if not in operator mode or if env list is empty
+        if (!configToSet.features.argocd.operator || !configToSet.features.argocd.env) {
+            log.debug("Skipping features.argocd.env validation: operator mode is disabled or env list is empty.")
+            return
+        }
+
+        List<Map> env = configToSet.features.argocd.env as List<Map<String, String>>
+
+        log.info("Validating env list in features.argocd.env with {} entries.", env.size())
+
+        env.each { map ->
+            if (!(map instanceof Map) || !map.containsKey('name') || !map.containsKey('value')) {
+                throw new IllegalArgumentException("Each env variable in features.argocd.env must be a map with 'name' and 'value'. Invalid entry found: $map")
+            }
+        }
+
+        log.info("Env list validation for features.argocd.env completed successfully.")
+    }
+
     @Override
     void enable() {