1 files changed, 82 insertions, 0 deletions
diff --git a/certServicePostProcessor/src/main/java/org/onap/oom/certservice/postprocessor/configuration/AppConfigurationProvider.java b/certServicePostProcessor/src/main/java/org/onap/oom/certservice/postprocessor/configuration/AppConfigurationProvider.java
new file mode 100644
index 00000000..1e9ef8a9
--- /dev/null
+++ b/certServicePostProcessor/src/main/java/org/onap/oom/certservice/postprocessor/configuration/AppConfigurationProvider.java
@@ -0,0 +1,82 @@
+/*============LICENSE_START=======================================================
+ * oom-truststore-merger
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.oom.certservice.postprocessor.configuration;
+
+
+import static org.onap.oom.certservice.postprocessor.configuration.model.EnvVariable.KEYSTORE_DESTINATION_PATHS;
+import static org.onap.oom.certservice.postprocessor.configuration.model.EnvVariable.KEYSTORE_SOURCE_PATHS;
+import static org.onap.oom.certservice.postprocessor.configuration.model.EnvVariable.TRUSTSTORES_PASSWORDS_PATHS;
+import static org.onap.oom.certservice.postprocessor.configuration.model.EnvVariable.TRUSTSTORES_PATHS;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import org.onap.oom.certservice.postprocessor.configuration.path.env.EnvReader;
+import org.onap.oom.certservice.postprocessor.configuration.exception.ConfigurationException;
+import org.onap.oom.certservice.postprocessor.configuration.model.AppConfiguration;
+import org.onap.oom.certservice.postprocessor.configuration.model.EnvVariable;
+import org.onap.oom.certservice.postprocessor.configuration.path.DelimitedPathsSplitter;
+
+public class AppConfigurationProvider {
+
+    private final EnvReader envReader;
+    private final DelimitedPathsSplitter pathsSplitter;
+
+    public AppConfigurationProvider(DelimitedPathsSplitter pathsSplitter, EnvReader envReader) {
+        this.envReader = envReader;
+        this.pathsSplitter = pathsSplitter;
+    }
+
+    public AppConfiguration createConfiguration() {
+        List<String> truststoresPaths = getPaths(TRUSTSTORES_PATHS);
+        List<String> truststoresPasswordsPaths = getPaths(TRUSTSTORES_PASSWORDS_PATHS);
+        List<String> sourceKeystorePaths = getPaths(KEYSTORE_SOURCE_PATHS);
+        List<String> destinationKeystorePaths = getPaths(KEYSTORE_DESTINATION_PATHS);
+
+        ensureSameSize(truststoresPaths, truststoresPasswordsPaths, TRUSTSTORES_PATHS.name(),
+            TRUSTSTORES_PASSWORDS_PATHS.name());
+        ensureSameSize(sourceKeystorePaths, destinationKeystorePaths, KEYSTORE_SOURCE_PATHS.name(),
+            KEYSTORE_DESTINATION_PATHS.name());
+
+        return new AppConfiguration(truststoresPaths, truststoresPasswordsPaths, sourceKeystorePaths,
+            destinationKeystorePaths);
+    }
+
+    private List<String> getPaths(EnvVariable envVariable) {
+        Optional<String> envValue = envReader.getEnv(envVariable.name());
+        isMandatoryEnvPresent(envVariable, envValue);
+        return envValue.isPresent() ? pathsSplitter.getValidatedPaths(envVariable, envValue) : Collections.emptyList();
+    }
+
+    private void isMandatoryEnvPresent(EnvVariable envVariable, Optional<String> envValue) {
+        if (envVariable.isMandatory() && envValue.isEmpty()) {
+            throw new ConfigurationException(envVariable + " mandatory environment variable is not defined");
+        }
+    }
+
+    private void ensureSameSize(List<String> firstList, List<String> secondList, String firstListEnvName,
+                                String secondListEnvName) {
+        if (firstList.size() != secondList.size()) {
+            throw new ConfigurationException(
+                "Size of " + firstListEnvName
+                    + " does not match size of " + secondListEnvName + " environment variables");
+        }
+    }
+}