Re-factor matchable to reduce complexity

This solution is much cleaner than what is in StdMatchableTranslator.
Over 90% code coverage on it - utilizes a callback to retrieve DataType
and PolicyTypes. Support for missing timestamp TOSCA type. Also can
do a better job differentiating between a property contained in the policy
vs a schema.

Changed StdMatchableTranslator to utilize these classes. And removed the
old spaghetti.

Added some JUnit coverage for ToscaPolicyTranslatorUtils.

Removed duplicate code in the XACML Native Exception classes.

Issue-ID: POLICY-2242
Change-Id: I18f898d9e65f6da28e3b27517d40f8d389de18a0
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>

3 files changed, 89 insertions, 56 deletions

diff --git a/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlExceptionMapper.java b/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlExceptionMapper.java
new file mode 100644
index 00000000..4112e64e
--- /dev/null
+++ b/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlExceptionMapper.java
@@ -0,0 +1,69 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2020 AT&T Intellectual Property. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdpx.main.rest.serialization;
+
+import java.io.IOException;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.ext.ExceptionMapper;
+import lombok.Getter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Catches IOException when decoding/encoding a REST xacml request/response and converts them from an HTTP 500
+ * error code to an HTTP 400 error code.
+ *
+ */
+public abstract class XacmlExceptionMapper implements ExceptionMapper<IOException> {
+    private static final Logger LOGGER = LoggerFactory.getLogger(XacmlExceptionMapper.class);
+
+    @Getter
+    String invalidRequest;
+    @Getter
+    String invalidResponse;
+
+    public abstract boolean isInvalidRequest(String message);
+
+    public abstract boolean isInvalidResponse(String message);
+
+    @Override
+    public Response toResponse(IOException exc) {
+        if (isInvalidRequest(exc.getMessage())) {
+            LOGGER.warn(invalidRequest, exc);
+            return Response.status(Response.Status.BAD_REQUEST).entity(new SimpleResponse(invalidRequest)).build();
+        } else if (isInvalidResponse(exc.getMessage())) {
+            LOGGER.warn(invalidResponse, exc);
+            return Response.status(Response.Status.BAD_REQUEST).entity(new SimpleResponse(invalidResponse)).build();
+        } else {
+            // Unexpected 500
+            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
+        }
+    }
+
+    @Getter
+    private static class SimpleResponse {
+        private String errorDetails;
+
+        public SimpleResponse(String errorDetails) {
+            this.errorDetails = errorDetails;
+        }
+    }
+}
diff --git a/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlJsonExceptionMapper.java b/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlJsonExceptionMapper.java
index 81fc2d26..03f3ddce 100644
--- a/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlJsonExceptionMapper.java
+++ b/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlJsonExceptionMapper.java
@@ -20,14 +20,8 @@
 
 package org.onap.policy.pdpx.main.rest.serialization;
 
-import java.io.IOException;
 import javax.ws.rs.Produces;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.ext.ExceptionMapper;
 import javax.ws.rs.ext.Provider;
-import lombok.Getter;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /**
  * Catches IOException when decoding/encoding a REST xacml request/response and converts them from an HTTP 500
@@ -37,32 +31,20 @@ import org.slf4j.LoggerFactory;
  */
 @Provider
 @Produces(XacmlJsonMessageBodyHandler.APPLICATION_XACML_JSON)
-public class XacmlJsonExceptionMapper implements ExceptionMapper<IOException> {
+public class XacmlJsonExceptionMapper  extends XacmlExceptionMapper {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(XacmlJsonExceptionMapper.class);
-    private static final String INVALID_REQUEST = "invalid JSON xacml request";
-    private static final String INVALID_RESPONSE = "invalid JSON xacml response";
+    public XacmlJsonExceptionMapper() {
+        this.invalidRequest = "invalid JSON xacml request";
+        this.invalidResponse = "invalid JSON xacml response";
+    }
 
     @Override
-    public Response toResponse(IOException exc) {
-        if (exc.getMessage().contains("json request")) {
-            LOGGER.warn(INVALID_REQUEST, exc);
-            return Response.status(Response.Status.BAD_REQUEST).entity(new SimpleResponse(INVALID_REQUEST)).build();
-        } else if (exc.getMessage().contains("json response")) {
-            LOGGER.warn(INVALID_RESPONSE, exc);
-            return Response.status(Response.Status.BAD_REQUEST).entity(new SimpleResponse(INVALID_RESPONSE)).build();
-        } else {
-            // Unexpected 500
-            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
-        }
+    public boolean isInvalidRequest(String message) {
+        return message.contains("json request");
     }
 
-    @Getter
-    private static class SimpleResponse {
-        private String errorDetails;
-
-        public SimpleResponse(String errorDetails) {
-            this.errorDetails = errorDetails;
-        }
+    @Override
+    public boolean isInvalidResponse(String message) {
+        return message.contains("json response");
     }
 }
\ No newline at end of file
diff --git a/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlXmlExceptionMapper.java b/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlXmlExceptionMapper.java
index 8e62abec..562c0e91 100644
--- a/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlXmlExceptionMapper.java
+++ b/main/src/main/java/org/onap/policy/pdpx/main/rest/serialization/XacmlXmlExceptionMapper.java
@@ -20,14 +20,8 @@
 
 package org.onap.policy.pdpx.main.rest.serialization;
 
-import java.io.IOException;
 import javax.ws.rs.Produces;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.ext.ExceptionMapper;
 import javax.ws.rs.ext.Provider;
-import lombok.Getter;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /**
  * Catches IOException when decoding/encoding a REST xacml request/response and converts them from an HTTP 500
@@ -37,32 +31,20 @@ import org.slf4j.LoggerFactory;
  */
 @Provider
 @Produces(XacmlXmlMessageBodyHandler.APPLICATION_XACML_XML)
-public class XacmlXmlExceptionMapper implements ExceptionMapper<IOException> {
+public class XacmlXmlExceptionMapper extends XacmlExceptionMapper {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(XacmlXmlExceptionMapper.class);
-    private static final String INVALID_REQUEST = "invalid XML xacml request";
-    private static final String INVALID_RESPONSE = "invalid XML xacml response";
+    public XacmlXmlExceptionMapper() {
+        this.invalidRequest = "invalid XML xacml request";
+        this.invalidResponse = "invalid XML xacml response";
+    }
 
     @Override
-    public Response toResponse(IOException exc) {
-        if (exc.getMessage().contains("dom request")) {
-            LOGGER.warn(INVALID_REQUEST, exc);
-            return Response.status(Response.Status.BAD_REQUEST).entity(new SimpleResponse(INVALID_REQUEST)).build();
-        } else if (exc.getMessage().contains("dom response")) {
-            LOGGER.warn(INVALID_RESPONSE, exc);
-            return Response.status(Response.Status.BAD_REQUEST).entity(new SimpleResponse(INVALID_RESPONSE)).build();
-        } else {
-            // Unexpected 500
-            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
-        }
+    public boolean isInvalidRequest(String message) {
+        return message.contains("dom request");
     }
 
-    @Getter
-    private static class SimpleResponse {
-        private String errorDetails;
-
-        public SimpleResponse(String errorDetails) {
-            this.errorDetails = errorDetails;
-        }
+    @Override
+    public boolean isInvalidResponse(String message) {
+        return message.contains("dom response");
     }
 }
\ No newline at end of file