Per docs, if the mysql connector is JDBC2 compliant then it should use
the Connection.isValid API to test a connection.
(https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#isValid-int-)
This would significantly reduce query lags and API throughput, as for
every SQL query one or two SELECT 1 are performed everytime a Connection
is given to application logic.
This should only be accepted when the driver is JDBC4 complaint.
As per the docs, the connector-j can use /* ping */ before calling
SELECT 1 to have light weight application pings to the server:
https://dev.mysql.com/doc/connector-j/en/connector-j-usagenotes-j2ee-concepts-connection-pooling.html
Replaces dbcp2 connection pool library with more performant HikariCP.
With this unit tests are failing but build is passing.
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
Co-authored-by: Rohit Yadav <rohityadav89@gmail.com>
* Normalize logs
All classes that could have their loggers inherited from their fathers had their own loggers deleted;
Most loggers didn't have to be static, so most of them were normalized so that they wouldn't be;
All loggers are protected now;
Static logger's name are now 'LOGGER';
Non-static logger's name are now 'logger';
New class DbUpgradeAbstractImpl created so that all Upgraders extend it and inherit its logger
* Upgrade log4j
* fix errors caused by the merge
* Refactor cglibThrowableRenderer functionality to log4j2 and upgrade the last configuration files
* fix sonarcloud bug
* Fix errors caused by merge, remove some unused loggers, and rename a variable that was mistakenly renamed on the normalization commit
* Readd snmpTrapAppender, remove TestAppender
* Regenerate changes
* regenerate changes
* refactor last custom appender
* fix systemvm configuration xml
* Regenerate changes
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* Fix utils pom
* fix some tests
* regenerate changes
* Fix jar being printed on exception
* fix logging in system VMs, fix commands not having log4j2 classpath.
* regenerate changes
* Fix some unwanted renomeations
* fix end of file
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* fix merge error
* regenerate changes
* fix tests
* regenerate changes
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* readd reload4j to tungsten as juniper depends on it
* Regenerate changes
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* re-add reload4j dependency to network-contrail, as juniper depends on it
* regenerate changes
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* fix typo
* regenerate changes
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* Fix end of files
* regenerate changes
* add logj42 to cloud-utils-SHADED.jar
* regenerate changes
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* Regenerate changes
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* fix some tests
* Regenerate changes
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* fix test
* Regenerate changes
* Regenerate changes
