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YARN-11726: Add logging statements for successful and unsuccessful password retrieval operation #7148

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YARN-11726: Add logging statements for successful and unsuccessful password retrieval operation #7148

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809e3d8
HadoopYARN-11726: Add logging statements for successful and unsucessf…
Nov 5, 2024
d0ba380
YARN-11726: Adding test cases for IOException and change log from deb…
Nov 6, 2024
8f7c101
Updating the log level to debug and warn instead of info level
Dec 14, 2024
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9 changes: 8 additions & 1 deletion ...yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/webapp/util/WebAppUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -47,8 +47,9 @@
import org.apache.hadoop.yarn.webapp.NotFoundException;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URLEncodedUtils;

import javax.servlet.http.HttpServletRequest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Private
@Evolving
Expand All @@ -61,6 +62,7 @@ public class WebAppUtils {
"ssl.server.keystore.keypassword";
public static final String HTTPS_PREFIX = "https://";
public static final String HTTP_PREFIX = "http://";
public static final Logger LOG = LoggerFactory.getLogger(WebAppUtils.class);

public static void setRMWebAppPort(Configuration conf, int port) {
String hostname = getRMWebAppURLWithoutScheme(conf);
Expand Down Expand Up @@ -509,11 +511,16 @@ static String getPassword(Configuration conf, String alias) {
char[] passchars = conf.getPassword(alias);
if (passchars != null) {
password = new String(passchars);
LOG.debug("Successful password retrival for alias: {}", alias);
} else {
LOG.warn("Password retrieval failed, no password found for alias: {}", alias);
}
}
catch (IOException ioe) {
password = null;
LOG.error("Unable to retrieve password for alias: {}", alias, ioe);
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@K0K0V0K K0K0V0K Nov 11, 2024

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If i see well here the void error(String var1, Object var2, Object var3); called, so the 3th throwable wont be logged in this case. Also in this case two error log will be created, so maybe debug level will be also fine here.

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@Hean-Chhinling Hean-Chhinling Nov 11, 2024

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Hello @K0K0V0K,
Thank you for your feedbacks. By default SLF4J logging will handle the Throwable as the last parameter for exception logging. Therefore, I do not need another place {} holder for it.

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@Hean-Chhinling Hean-Chhinling Nov 11, 2024

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I tried with a DEBUG level log and log message does not appear when I run the unit test that simulate the Exception. I think it better with an ERROR level because now I changed when the password is null it log with WARN level. So when the exception happens, it will log with two log messages in two levels ERROR and WARN.

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@K0K0V0K K0K0V0K Nov 11, 2024

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yup, seems you are right

}

return password;
}

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9 changes: 9 additions & 0 deletions .../hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/webapp/util/TestWebAppUtils.java
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Expand Up @@ -109,6 +109,15 @@ void testGetPassword() throws Exception {
assertNull(WebAppUtils.getPassword(conf, "invalid-alias"));
}

@Test
void testGetPasswordIOException() throws Exception {
Configuration mockConf = Mockito.mock(Configuration.class);

Mockito.when(mockConf.getPassword("error-alias")).thenThrow(new IOException("Simulated IO error"));

assertNull(WebAppUtils.getPassword(mockConf, "error-alias"));
}

@Test
void testLoadSslConfiguration() throws Exception {
Configuration conf = provisionCredentialsForSSL();
Expand Down
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