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pretty print response if method is annotated with @PrettyPrint or 'pretty' req param is set to true

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Athou
2013-08-18 16:29:41 +02:00
parent ee4eb9bb07
commit ae03b42c6d
3 changed files with 39 additions and 1 deletions
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27
src/main/java/com/commafeed/frontend/rest/JsonProvider.java
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@@ -6,9 +6,11 @@ import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
@@ -19,6 +21,7 @@ import org.apache.http.HttpHeaders;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
@Provider
@Consumes(MediaType.APPLICATION_JSON)
@@ -30,6 +33,9 @@ public class JsonProvider implements MessageBodyReader<Object>, MessageBodyWrite
private static final ObjectMapper MAPPER = new ObjectMapper().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
@Context
private HttpServletRequest request;
@Override
public void writeTo(Object value, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
@@ -38,10 +44,29 @@ public class JsonProvider implements MessageBodyReader<Object>, MessageBodyWrite
httpHeaders.putSingle(HttpHeaders.CACHE_CONTROL, CACHE_CONTROL_VALUE);
httpHeaders.putSingle(HttpHeaders.PRAGMA, CACHE_CONTROL_VALUE);
getMapper().writeValue(entityStream, value);
ObjectWriter writer = getMapper().writer();
if (hasPrettyPrint(annotations)) {
writer = writer.withDefaultPrettyPrinter();
}
writer.writeValue(entityStream, value);
}
private boolean hasPrettyPrint(Annotation[] annotations) {
boolean prettyPrint = false;
for (Annotation annotation : annotations) {
if (PrettyPrint.class.equals(annotation.annotationType())) {
prettyPrint = true;
break;
}
}
if (!prettyPrint && request != null) {
prettyPrint = Boolean.parseBoolean(request.getParameter("pretty"));
}
return prettyPrint;
}
@Override
public Object readFrom(Class<Object> type, Type genericType, Annotation[] annotations, MediaType mediaType,
MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {

12
src/main/java/com/commafeed/frontend/rest/PrettyPrint.java Normal file
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@@ -0,0 +1,12 @@
package com.commafeed.frontend.rest;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target({ ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
public @interface PrettyPrint {
}

1
src/main/java/com/commafeed/frontend/rest/resources/AdminREST.java
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@@ -227,6 +227,7 @@ public class AdminREST extends AbstractREST {
@Path("/metrics")
@GET
@PrettyPrint
@ApiOperation(value = "Retrieve server metrics")
public Response getMetrics() {
return Response.ok(metrics).build();