use of com.fasterxml.jackson.databind.ObjectWriter in project druid by druid-io.
the class QueryResource method doPost.
@POST
@Produces({ MediaType.APPLICATION_JSON, SmileMediaTypes.APPLICATION_JACKSON_SMILE })
@Consumes({ MediaType.APPLICATION_JSON, SmileMediaTypes.APPLICATION_JACKSON_SMILE, APPLICATION_SMILE })
public Response doPost(final InputStream in, @QueryParam("pretty") final String pretty, // used to get request content-type,Accept header, remote address and auth-related headers
@Context final HttpServletRequest req) throws IOException {
final QueryLifecycle queryLifecycle = queryLifecycleFactory.factorize();
Query<?> query = null;
final ResourceIOReaderWriter ioReaderWriter = createResourceIOReaderWriter(req, pretty != null);
final String currThreadName = Thread.currentThread().getName();
try {
queryLifecycle.initialize(readQuery(req, in, ioReaderWriter));
query = queryLifecycle.getQuery();
final String queryId = query.getId();
final String queryThreadName = StringUtils.format("%s[%s_%s_%s]", currThreadName, query.getType(), query.getDataSource().getTableNames(), queryId);
Thread.currentThread().setName(queryThreadName);
if (log.isDebugEnabled()) {
log.debug("Got query [%s]", query);
}
final Access authResult = queryLifecycle.authorize(req);
if (!authResult.isAllowed()) {
throw new ForbiddenException(authResult.toString());
}
final QueryLifecycle.QueryResponse queryResponse = queryLifecycle.execute();
final Sequence<?> results = queryResponse.getResults();
final ResponseContext responseContext = queryResponse.getResponseContext();
final String prevEtag = getPreviousEtag(req);
if (prevEtag != null && prevEtag.equals(responseContext.getEntityTag())) {
queryLifecycle.emitLogsAndMetrics(null, req.getRemoteAddr(), -1);
successfulQueryCount.incrementAndGet();
return Response.notModified().build();
}
final Yielder<?> yielder = Yielders.each(results);
try {
boolean shouldFinalize = QueryContexts.isFinalize(query, true);
boolean serializeDateTimeAsLong = QueryContexts.isSerializeDateTimeAsLong(query, false) || (!shouldFinalize && QueryContexts.isSerializeDateTimeAsLongInner(query, false));
final ObjectWriter jsonWriter = ioReaderWriter.getResponseWriter().newOutputWriter(queryLifecycle.getToolChest(), queryLifecycle.getQuery(), serializeDateTimeAsLong);
Response.ResponseBuilder responseBuilder = Response.ok(new StreamingOutput() {
@Override
public void write(OutputStream outputStream) throws WebApplicationException {
Exception e = null;
CountingOutputStream os = new CountingOutputStream(outputStream);
try {
// json serializer will always close the yielder
jsonWriter.writeValue(os, yielder);
// Some types of OutputStream suppress flush errors in the .close() method.
os.flush();
os.close();
} catch (Exception ex) {
e = ex;
log.noStackTrace().error(ex, "Unable to send query response.");
throw new RuntimeException(ex);
} finally {
Thread.currentThread().setName(currThreadName);
queryLifecycle.emitLogsAndMetrics(e, req.getRemoteAddr(), os.getCount());
if (e == null) {
successfulQueryCount.incrementAndGet();
} else {
failedQueryCount.incrementAndGet();
}
}
}
}, ioReaderWriter.getResponseWriter().getResponseType()).header("X-Druid-Query-Id", queryId);
transferEntityTag(responseContext, responseBuilder);
DirectDruidClient.removeMagicResponseContextFields(responseContext);
// Limit the response-context header, see https://github.com/apache/druid/issues/2331
// Note that Response.ResponseBuilder.header(String key,Object value).build() calls value.toString()
// and encodes the string using ASCII, so 1 char is = 1 byte
final ResponseContext.SerializationResult serializationResult = responseContext.serializeWith(jsonMapper, responseContextConfig.getMaxResponseContextHeaderSize());
if (serializationResult.isTruncated()) {
final String logToPrint = StringUtils.format("Response Context truncated for id [%s]. Full context is [%s].", queryId, serializationResult.getFullResult());
if (responseContextConfig.shouldFailOnTruncatedResponseContext()) {
log.error(logToPrint);
throw new QueryInterruptedException(new TruncatedResponseContextException("Serialized response context exceeds the max size[%s]", responseContextConfig.getMaxResponseContextHeaderSize()), selfNode.getHostAndPortToUse());
} else {
log.warn(logToPrint);
}
}
return responseBuilder.header(HEADER_RESPONSE_CONTEXT, serializationResult.getResult()).build();
} catch (QueryException e) {
// make sure to close yielder if anything happened before starting to serialize the response.
yielder.close();
throw e;
} catch (Exception e) {
// make sure to close yielder if anything happened before starting to serialize the response.
yielder.close();
throw new RuntimeException(e);
} finally {
// do not close yielder here, since we do not want to close the yielder prior to
// StreamingOutput having iterated over all the results
}
} catch (QueryInterruptedException e) {
interruptedQueryCount.incrementAndGet();
queryLifecycle.emitLogsAndMetrics(e, req.getRemoteAddr(), -1);
return ioReaderWriter.getResponseWriter().gotError(e);
} catch (QueryTimeoutException timeout) {
timedOutQueryCount.incrementAndGet();
queryLifecycle.emitLogsAndMetrics(timeout, req.getRemoteAddr(), -1);
return ioReaderWriter.getResponseWriter().gotTimeout(timeout);
} catch (QueryCapacityExceededException cap) {
failedQueryCount.incrementAndGet();
queryLifecycle.emitLogsAndMetrics(cap, req.getRemoteAddr(), -1);
return ioReaderWriter.getResponseWriter().gotLimited(cap);
} catch (QueryUnsupportedException unsupported) {
failedQueryCount.incrementAndGet();
queryLifecycle.emitLogsAndMetrics(unsupported, req.getRemoteAddr(), -1);
return ioReaderWriter.getResponseWriter().gotUnsupported(unsupported);
} catch (BadJsonQueryException | ResourceLimitExceededException e) {
interruptedQueryCount.incrementAndGet();
queryLifecycle.emitLogsAndMetrics(e, req.getRemoteAddr(), -1);
return ioReaderWriter.getResponseWriter().gotBadQuery(e);
} catch (ForbiddenException e) {
// send an error response if this is thrown.
throw e;
} catch (Exception e) {
failedQueryCount.incrementAndGet();
queryLifecycle.emitLogsAndMetrics(e, req.getRemoteAddr(), -1);
log.noStackTrace().makeAlert(e, "Exception handling request").addData("query", query != null ? jsonMapper.writeValueAsString(query) : "unparseable query").addData("peer", req.getRemoteAddr()).emit();
return ioReaderWriter.getResponseWriter().gotError(e);
} finally {
Thread.currentThread().setName(currThreadName);
}
}
use of com.fasterxml.jackson.databind.ObjectWriter in project fastjson by alibaba.
the class Jackson2AfterBurnCodec method encode.
@Override
public void encode(OutputStream out, Object object) throws Exception {
Class<?> clazz = object.getClass();
JsonGenerator generator = constructGenerator(out);
JavaType type = mapper.getTypeFactory().constructType(clazz);
ObjectWriter writer = mapper.writerFor(type);
writer.writeValue(generator, object);
generator.close();
}
use of com.fasterxml.jackson.databind.ObjectWriter in project fastjson by alibaba.
the class Jackson2Codec method encode.
@Override
public void encode(OutputStream out, Object object) throws Exception {
Class<?> clazz = object.getClass();
JsonGenerator generator = constructGenerator(out);
JavaType type = mapper.getTypeFactory().constructType(clazz);
ObjectWriter writer = mapper.writerFor(type);
writer.writeValue(generator, object);
generator.flush();
generator.close();
}
use of com.fasterxml.jackson.databind.ObjectWriter in project OpenRefine by OpenRefine.
the class TestUtils method isSerializedTo.
/**
* Checks that a serializable object is serialized to the target JSON string.
*
* @throws IOException
*/
public static void isSerializedTo(Object o, String targetJson, boolean saveMode) {
// also check Jackson serialization
try {
ObjectWriter writer = null;
if (saveMode) {
writer = ParsingUtilities.saveWriter;
} else {
writer = ParsingUtilities.defaultWriter;
}
String jacksonJson = writer.writeValueAsString(o);
assertEqualsAsJson(jacksonJson, targetJson);
} catch (JsonProcessingException e) {
e.printStackTrace();
fail("jackson serialization failed");
}
}
use of com.fasterxml.jackson.databind.ObjectWriter in project immutables by immutables.
the class JsonChecker method assertSameJson.
private void assertSameJson(JsonNode expected) throws JsonProcessingException {
Objects.requireNonNull(expected, "expected");
if (!actual.equals(expected)) {
ObjectWriter writer = MAPPER.writerWithDefaultPrettyPrinter();
String expectedPretty = writer.writeValueAsString(expected);
String actualPretty = writer.writeValueAsString(actual);
Assertions.assertEquals(expectedPretty, actualPretty);
}
}
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