Added validation of configuration

Fields are being validated right after reading servers details from JSON (when application starts).
Created own annotation to validate server URL with proper requirements.
When invalid details are given application closes.

Signed-off-by: Michal Banka <michal.banka@nokia.com>
Change-Id: I3e476266056ec0fb637f01f9d4d4c63b1f0d1c6a
Issue-ID: AAF-997

3 files changed, 117 insertions, 0 deletions

diff --git a/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/PortNumberViolation.java b/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/PortNumberViolation.java
new file mode 100644
index 00000000..acde0417
--- /dev/null
+++ b/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/PortNumberViolation.java
@@ -0,0 +1,43 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * 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.aaf.certservice.certification.configuration.validation.constraints.violations;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+public class PortNumberViolation implements URLServerViolation {
+
+    private static final int MIN_PORT = 1;
+    private static final int MAX_PORT = 65535;
+    private static final int PORT_UNDEFINED = -1;
+
+    @Override
+    public boolean validate(String serverUrl) {
+        try {
+            URL url = new URL(serverUrl);
+            int port = url.getPort();
+            return port >= MIN_PORT && port <= MAX_PORT || port == PORT_UNDEFINED;
+        } catch (MalformedURLException e) {
+            return false;
+        }
+    }
+
+}
diff --git a/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/RequestTypeViolation.java b/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/RequestTypeViolation.java
new file mode 100644
index 00000000..7fbbdf34
--- /dev/null
+++ b/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/RequestTypeViolation.java
@@ -0,0 +1,49 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * 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.aaf.certservice.certification.configuration.validation.constraints.violations;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+public class RequestTypeViolation implements URLServerViolation {
+
+    private final static List<String> VALID_REQUESTS = Collections.singletonList("http");
+
+    @Override
+    public boolean validate(String serverUrl) {
+        try {
+            AtomicBoolean isValid = new AtomicBoolean(false);
+            String protocol = new URL(serverUrl).getProtocol();
+            VALID_REQUESTS.forEach(requestType -> {
+                if (protocol.equals(requestType)) {
+                    isValid.set(true);
+                }
+            });
+            return isValid.get();
+        } catch (MalformedURLException e) {
+            return false;
+        }
+    }
+}
diff --git a/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/URLServerViolation.java b/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/URLServerViolation.java
new file mode 100644
index 00000000..e5a110d2
--- /dev/null
+++ b/certService/src/main/java/org/onap/aaf/certservice/certification/configuration/validation/constraints/violations/URLServerViolation.java
@@ -0,0 +1,25 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * 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.aaf.certservice.certification.configuration.validation.constraints.violations;
+
+public interface URLServerViolation {
+    boolean validate(String url);
+}