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[SCB-1961] add rest server codec filter
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33 changes: 33 additions & 0 deletions
33
...mmon-rest/src/main/java/org/apache/servicecomb/common/rest/filter/RestFilterProvider.java
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/* | ||
* Licensed to the Apache Software Foundation (ASF) under one or more | ||
* contributor license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright ownership. | ||
* The ASF licenses this file to You 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. | ||
*/ | ||
package org.apache.servicecomb.common.rest.filter; | ||
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import java.util.Arrays; | ||
import java.util.List; | ||
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import org.apache.servicecomb.common.rest.filter.inner.RestServerCodecFilter; | ||
import org.apache.servicecomb.core.filter.Filter; | ||
import org.apache.servicecomb.core.filter.FilterProvider; | ||
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public class RestFilterProvider implements FilterProvider { | ||
@Override | ||
public List<Class<? extends Filter>> getFilters() { | ||
return Arrays.asList( | ||
RestServerCodecFilter.class | ||
); | ||
} | ||
} |
130 changes: 130 additions & 0 deletions
130
.../src/main/java/org/apache/servicecomb/common/rest/filter/inner/RestServerCodecFilter.java
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/* | ||
* Licensed to the Apache Software Foundation (ASF) under one or more | ||
* contributor license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright ownership. | ||
* The ASF licenses this file to You 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. | ||
*/ | ||
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package org.apache.servicecomb.common.rest.filter.inner; | ||
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import static com.google.common.net.HttpHeaders.CONTENT_LENGTH; | ||
import static com.google.common.net.HttpHeaders.TRANSFER_ENCODING; | ||
import static javax.ws.rs.core.Response.Status.INTERNAL_SERVER_ERROR; | ||
import static org.apache.servicecomb.core.exception.Exceptions.exceptionToResponse; | ||
import static org.apache.servicecomb.swagger.invocation.InvocationType.PRODUCER; | ||
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import java.util.List; | ||
import java.util.Map; | ||
import java.util.Map.Entry; | ||
import java.util.concurrent.CompletableFuture; | ||
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import javax.servlet.http.Part; | ||
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import org.apache.servicecomb.common.rest.HttpTransportContext; | ||
import org.apache.servicecomb.common.rest.RestConst; | ||
import org.apache.servicecomb.common.rest.codec.RestCodec; | ||
import org.apache.servicecomb.common.rest.codec.produce.ProduceProcessor; | ||
import org.apache.servicecomb.common.rest.definition.RestOperationMeta; | ||
import org.apache.servicecomb.core.Invocation; | ||
import org.apache.servicecomb.core.definition.OperationMeta; | ||
import org.apache.servicecomb.core.filter.Filter; | ||
import org.apache.servicecomb.core.filter.FilterMeta; | ||
import org.apache.servicecomb.core.filter.FilterNode; | ||
import org.apache.servicecomb.foundation.common.utils.AsyncUtils; | ||
import org.apache.servicecomb.foundation.vertx.http.HttpServletRequestEx; | ||
import org.apache.servicecomb.foundation.vertx.http.HttpServletResponseEx; | ||
import org.apache.servicecomb.foundation.vertx.stream.BufferOutputStream; | ||
import org.apache.servicecomb.swagger.invocation.Response; | ||
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import io.netty.buffer.Unpooled; | ||
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@FilterMeta(name = "rest-server-codec", invocationType = PRODUCER) | ||
public class RestServerCodecFilter implements Filter { | ||
@Override | ||
public CompletableFuture<Response> onFilter(Invocation invocation, FilterNode nextNode) { | ||
return CompletableFuture.completedFuture(invocation) | ||
.thenCompose(this::decodeRequest) | ||
.thenCompose(nextNode::onFilter) | ||
.exceptionally(exception -> exceptionToResponse(invocation, exception, INTERNAL_SERVER_ERROR)) | ||
.thenCompose(response -> encodeResponse(invocation, response)); | ||
} | ||
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private CompletableFuture<Invocation> decodeRequest(Invocation invocation) { | ||
HttpTransportContext transportContext = invocation.getTransportContext(); | ||
HttpServletRequestEx requestEx = transportContext.getRequestEx(); | ||
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OperationMeta operationMeta = invocation.getOperationMeta(); | ||
RestOperationMeta restOperationMeta = operationMeta.getExtData(RestConst.SWAGGER_REST_OPERATION); | ||
Map<String, Object> swaggerArguments = RestCodec.restToArgs(requestEx, restOperationMeta); | ||
invocation.setSwaggerArguments(swaggerArguments); | ||
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return CompletableFuture.completedFuture(invocation); | ||
} | ||
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private CompletableFuture<Response> encodeResponse(Invocation invocation, Response response) { | ||
HttpTransportContext transportContext = invocation.getTransportContext(); | ||
ProduceProcessor produceProcessor = transportContext.getProduceProcessor(); | ||
HttpServletResponseEx responseEx = transportContext.getResponseEx(); | ||
boolean download = isDownloadFileResponseType(invocation, response); | ||
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return encodeResponse(response, download, produceProcessor, responseEx); | ||
} | ||
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@SuppressWarnings("deprecation") | ||
public static CompletableFuture<Response> encodeResponse(Response response, boolean download, | ||
ProduceProcessor produceProcessor, HttpServletResponseEx responseEx) { | ||
responseEx.setStatus(response.getStatusCode(), response.getReasonPhrase()); | ||
copyHeadersToHttpResponse(response.getHeaders().getHeaderMap(), responseEx); | ||
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if (download) { | ||
return CompletableFuture.completedFuture(response); | ||
} | ||
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responseEx.setContentType(produceProcessor.getName() + "; charset=utf-8"); | ||
try (BufferOutputStream output = new BufferOutputStream(Unpooled.compositeBuffer())) { | ||
produceProcessor.encodeResponse(output, response.getResult()); | ||
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responseEx.setBodyBuffer(output.getBuffer()); | ||
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return CompletableFuture.completedFuture(response); | ||
} catch (Throwable e) { | ||
return AsyncUtils.completeExceptionally(e); | ||
} | ||
} | ||
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/** | ||
* Check whether this response is a downloaded file response, | ||
* according to the schema recorded in {@link org.apache.servicecomb.swagger.invocation.response.ResponsesMeta} | ||
* and response status code. | ||
* @return true if this response is a downloaded file, otherwise false. | ||
*/ | ||
public static boolean isDownloadFileResponseType(Invocation invocation, Response response) { | ||
return Part.class.isAssignableFrom( | ||
invocation.findResponseType(response.getStatusCode()).getRawClass()); | ||
} | ||
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public static void copyHeadersToHttpResponse(Map<String, List<Object>> headerMap, HttpServletResponseEx responseEx) { | ||
if (headerMap == null) { | ||
return; | ||
} | ||
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for (Entry<String, List<Object>> entry : headerMap.entrySet()) { | ||
for (Object value : entry.getValue()) { | ||
if (!entry.getKey().equalsIgnoreCase(CONTENT_LENGTH) | ||
&& !entry.getKey().equalsIgnoreCase(TRANSFER_ENCODING)) { | ||
responseEx.addHeader(entry.getKey(), String.valueOf(value)); | ||
} | ||
} | ||
} | ||
} | ||
} |
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18 changes: 18 additions & 0 deletions
18
...st/src/main/resources/META-INF/services/org.apache.servicecomb.core.filter.FilterProvider
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# | ||
# Licensed to the Apache Software Foundation (ASF) under one or more | ||
# contributor license agreements. See the NOTICE file distributed with | ||
# this work for additional information regarding copyright ownership. | ||
# The ASF licenses this file to You 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. | ||
# | ||
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org.apache.servicecomb.common.rest.filter.RestFilterProvider |
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