HADOOP-13526. Add detailed logging in KMS for the authentication failure of proxy user. Contributed by Suraj Acharya.
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@ -39,6 +39,8 @@ import org.apache.hadoop.util.HttpExceptionUtils;
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import org.apache.http.NameValuePair;
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import org.apache.http.client.utils.URLEncodedUtils;
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import org.codehaus.jackson.map.ObjectMapper;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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@ -81,6 +83,9 @@ public class DelegationTokenAuthenticationFilter
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private static final String ERROR_EXCEPTION_JSON = "exception";
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private static final String ERROR_MESSAGE_JSON = "message";
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private static final Logger LOG = LoggerFactory.getLogger(
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DelegationTokenAuthenticationFilter.class);
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/**
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* Sets an external <code>DelegationTokenSecretManager</code> instance to
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* manage creation and verification of Delegation Tokens.
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@ -261,6 +266,11 @@ public class DelegationTokenAuthenticationFilter
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HttpExceptionUtils.createServletExceptionResponse(response,
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HttpServletResponse.SC_FORBIDDEN, ex);
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requestCompleted = true;
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if (LOG.isDebugEnabled()) {
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LOG.debug("Authentication exception: " + ex.getMessage(), ex);
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} else {
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LOG.warn("Authentication exception: " + ex.getMessage());
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}
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}
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}
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}
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