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authorJim Hahn <jrh3@att.com>2019-09-13 12:14:25 -0400
committerJim Hahn <jrh3@att.com>2019-09-13 17:40:29 -0400
commitaf2e4018c92b0fb311f60dfe507335b12e2935a4 (patch)
tree62705712e2a88682e17bdd9fef248e866c7407e4 /policy-endpoints/src/main/java
parent63922e3dc9101f019cb490f6c5d02991c10fcdf5 (diff)
Extract YamlJsonTranslator from StandardYamlCoder
Refactored StandardYamlCoder, extracting a new class, YamlJsonTranslator, from it. This facilitates performing yaml translation when not using a standard "gson" coder. Added YamlJacksonHandler which supports YAML translation layered on top of a JacksonHandler instead of a GsonMessageBodyHandler. Also added junit tests to complete coverage of StandardCoder. Also added public APPLICATION_YAML to YamlMessageBodyHandler. Change-Id: Ia470fa194661fbf1aebeaf0f18b57f2a984cb64b Issue-ID: POLICY-2081 Signed-off-by: Jim Hahn <jrh3@att.com>
Diffstat (limited to 'policy-endpoints/src/main/java')
-rw-r--r--policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlExceptionMapper.java2
-rw-r--r--policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlJacksonHandler.java51
-rw-r--r--policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlMessageBodyHandler.java54
3 files changed, 81 insertions, 26 deletions
diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlExceptionMapper.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlExceptionMapper.java
index ac96cab0..7eac932a 100644
--- a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlExceptionMapper.java
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlExceptionMapper.java
@@ -34,7 +34,7 @@ import org.yaml.snakeyaml.error.YAMLException;
* error code to an HTTP 400 error code.
*/
@Provider
-@Produces("application/yaml")
+@Produces(YamlMessageBodyHandler.APPLICATION_YAML)
public class YamlExceptionMapper implements ExceptionMapper<YAMLException> {
private static Logger logger = LoggerFactory.getLogger(YamlExceptionMapper.class);
diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlJacksonHandler.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlJacksonHandler.java
new file mode 100644
index 00000000..0cab374f
--- /dev/null
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlJacksonHandler.java
@@ -0,0 +1,51 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.endpoints.http.server;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.ext.Provider;
+import org.onap.policy.common.gson.JacksonHandler;
+import org.onap.policy.common.utils.coder.YamlJsonTranslator;
+
+/**
+ * Provider that serializes and de-serializes YAML via snakeyaml and gson using jackson
+ * default behaviors and annotations.
+ */
+@Provider
+@Consumes(MediaType.WILDCARD)
+@Produces(MediaType.WILDCARD)
+public class YamlJacksonHandler extends YamlMessageBodyHandler {
+
+ /**
+ * Translator to be used. We want a GSON object that's configured the same way as it
+ * is in {@link JacksonHandler}, so just get it from there.
+ */
+ private static final YamlJsonTranslator TRANS = new YamlJsonTranslator(new JacksonHandler().getGson());
+
+ /**
+ * Constructs the object.
+ */
+ public YamlJacksonHandler() {
+ super(TRANS);
+ }
+}
diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlMessageBodyHandler.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlMessageBodyHandler.java
index 36418e4a..89aa8ff6 100644
--- a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlMessageBodyHandler.java
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/YamlMessageBodyHandler.java
@@ -26,7 +26,6 @@ import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
-import java.io.Reader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.nio.charset.StandardCharsets;
@@ -37,14 +36,14 @@ import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
-import org.onap.policy.common.utils.coder.CoderException;
-import org.onap.policy.common.utils.coder.StandardYamlCoder;
+import org.onap.policy.common.gson.GsonMessageBodyHandler;
+import org.onap.policy.common.utils.coder.YamlJsonTranslator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.yaml.snakeyaml.error.YAMLException;
/**
- * Provider that serializes and de-serializes JSON via gson.
+ * Provider that serializes and de-serializes YAML via snakeyaml and gson.
*/
@Provider
@Consumes(MediaType.WILDCARD)
@@ -53,11 +52,33 @@ public class YamlMessageBodyHandler implements MessageBodyReader<Object>, Messag
public static final Logger logger = LoggerFactory.getLogger(YamlMessageBodyHandler.class);
+ public static final String APPLICATION_YAML = "application/yaml";
+
+ /**
+ * Translator that's used when none is specified. We want a GSON object that's
+ * configured the same way as it is in {@link GsonMessageBodyHandler}, so just get it
+ * from there.
+ */
+ private static final YamlJsonTranslator DEFAULT_TRANSLATOR =
+ new YamlJsonTranslator(new GsonMessageBodyHandler().getGson());
+
+ private final YamlJsonTranslator translator;
+
/**
* Constructs the object.
*/
public YamlMessageBodyHandler() {
+ this(DEFAULT_TRANSLATOR);
+ }
+
+ /**
+ * Constructs the object.
+ *
+ * @param translator translator to use to translate to/from YAML
+ */
+ public YamlMessageBodyHandler(YamlJsonTranslator translator) {
logger.info("Accepting YAML for REST calls");
+ this.translator = translator;
}
@Override
@@ -75,10 +96,7 @@ public class YamlMessageBodyHandler implements MessageBodyReader<Object>, Messag
MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
try (OutputStreamWriter writer = new OutputStreamWriter(entityStream, StandardCharsets.UTF_8)) {
- new MyYamlCoder().encode(writer, object);
-
- } catch (CoderException e) {
- throw new IOException(e);
+ translator.toYaml(writer, object);
}
}
@@ -104,24 +122,10 @@ public class YamlMessageBodyHandler implements MessageBodyReader<Object>, Messag
try (InputStreamReader streamReader = new InputStreamReader(entityStream, StandardCharsets.UTF_8)) {
Class<?> clazz = (Class<?>) genericType;
- return new MyYamlCoder().decode(streamReader, clazz);
- }
- }
+ return translator.fromYaml(streamReader, clazz);
- /**
- * Yaml coder that yields YAMLException on input so that the http servlet can identify
- * it and generate a bad-request status code. Only the {@link #decode(Reader, Class)}
- * method must be overridden.
- */
- private static class MyYamlCoder extends StandardYamlCoder {
- @Override
- public <T> T decode(Reader source, Class<T> clazz) {
- try {
- return fromJson(source, clazz);
-
- } catch (JsonSyntaxException e) {
- throw new YAMLException(e);
- }
+ } catch (JsonSyntaxException e) {
+ throw new YAMLException(e);
}
}
}