neils-dev commented on a change in pull request #2655: URL: https://github.com/apache/ozone/pull/2655#discussion_r718076845
########## File path: hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/UgiFilter.java ########## @@ -0,0 +1,169 @@ +/* + * 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.hadoop.ozone.s3; + +import org.apache.hadoop.hdds.conf.OzoneConfiguration; +import org.apache.hadoop.io.Text; +import org.apache.hadoop.ozone.OzoneSecurityUtil; +import org.apache.hadoop.ozone.s3.exception.OS3Exception; +import org.apache.hadoop.ozone.s3.signature.SignatureInfo; +import org.apache.hadoop.ozone.s3.signature.StringToSignProducer; +import org.apache.hadoop.ozone.security.OzoneTokenIdentifier; +import org.apache.hadoop.security.UserGroupInformation; +import org.apache.hadoop.security.token.Token; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.inject.Inject; +import javax.servlet.Filter; +import javax.servlet.FilterChain; +import javax.servlet.FilterConfig; +import javax.servlet.ServletException; +import javax.servlet.ServletRequest; +import javax.servlet.ServletResponse; +import javax.servlet.http.HttpServletRequest; +import javax.ws.rs.WebApplicationException; +import java.io.IOException; +import java.nio.charset.StandardCharsets; +import java.security.PrivilegedExceptionAction; +import java.util.HashMap; +import java.util.Map; +import java.util.Enumeration; +import org.apache.hadoop.ozone.s3.signature.AWSSignatureProcessor; + +import com.google.common.annotations.VisibleForTesting; +import static org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMTokenProto.Type.S3AUTHINFO; +import static org.apache.hadoop.ozone.s3.exception.S3ErrorTable.MALFORMED_HEADER; + +/** + * Preprocessing filter for every request. + * - creates OzoneToken containing aws signature + * aws id and stringToSign for aws authenication; stores OzoneToken in + * thread local variable (UserGroupInformation object) avail to all + * s3 rest command endpoints + */ +public class UgiFilter implements Filter { + public static final Logger LOG = LoggerFactory.getLogger(UgiFilter.class); + + @Inject + private OzoneConfiguration ozoneConfiguration; + @Inject + private Text omService; + + @Override + public void init(FilterConfig filterConfig) throws ServletException { + + } + + @Override + public void doFilter(ServletRequest servletRequest, + ServletResponse servletResponse, FilterChain filterChain) + throws IOException, ServletException { + Map<String, String> headerMap = new HashMap<>(); Review comment: > Question: > Previously we used to use context.getHeaders() which is multivalued map. So, for a single key it can have multiple values. Now with this logic of Map, if a key has multiple values. Thanks @bharatviswa504. Right, previously we had a multivalued map from getHeaders() however we only used the first value for each header. (`AWSSignatureProcessor` `fromHeaderMap()` headerEntry.getValue().get(0) ) Here we use `getHeader()` as you wrote that is mapped in the same manner (first value entry). Also, for the injected `ContainerRequestContext`, we removed the injected context because it is unavailable when generating the `stringToSign` for the ozone S3AUTHINFO token in `UgiFilter`. For aws authentication, (`stringToSign`), is there a need for us to extend the implementation to support multi-valued headers? Right now the PR implementation should provide the same as the prior version (`AWSSignatureProcessor`) using the single header value. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
