java.lang.NullPointerException: null

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
20/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
java, sql
Domain
databases

Research direction

Start in SQLMonitor.java at getConnectionProperties(SQLMonitor.java:113), then follow createTask at line 81 and doRun at line 49 using the supplied initialization stack trace. Identify which configuration or connection value is null and verify that monitor initialization completes without this exception; no test or reproduction setup is named in the issue.

Written by the indexing model from the issue text.

Description

Monitor initialization fails with below exception.
Please advise on the fix

[Agent-Monitor-Scheduler-1] 11 Aug 2022 18:28:51,220 ERROR SQLMonitor - Error while creating task for dbServer
java.lang.NullPointerException: null
	at com.appdynamics.extensions.sql.SQLMonitor.getConnectionProperties(SQLMonitor.java:113) ~[?:?]
	at com.appdynamics.extensions.sql.SQLMonitor.createTask(SQLMonitor.java:81) ~[?:?]
	at com.appdynamics.extensions.sql.SQLMonitor.doRun(SQLMonitor.java:49) [?:?]
	at com.appdynamics.extensions.AMonitorJob.run(AMonitorJob.java:50) [?:?]
	at com.appdynamics.extensions.ABaseMonitor.executeMonitor(ABaseMonitor.java:199) [?:?]
	at com.appdynamics.extensions.ABaseMonitor.execute(ABaseMonitor.java:187) [?:?]
	at com.singularity.ee.agent.systemagent.components.monitormanager.managed.MonitorTaskRunner.runTask(MonitorTaskRunner.java:149) [machineagent.jar:Machine Agent v21.12.6-3236 GA compatible with 4.4.1.0 Build Date 2022-01-15 06:37:49]
	at com.singularity.ee.agent.systemagent.components.monitormanager.managed.PeriodicTaskRunner.runTask(PeriodicTaskRunner.java:86) [machineagent.jar:Machine Agent v21.12.6-3236 GA compatible with 4.4.1.0 Build Date 2022-01-15 06:37:49]
	at com.singularity.ee.agent.systemagent.components.monitormanager.managed.PeriodicTaskRunner.run(PeriodicTaskRunner.java:47) [machineagent.jar:Machine Agent v21.12.6-3236 GA compatible with 4.4.1.0 Build Date 2022-01-15 06:37:49]
	at com.singularity.ee.util.javaspecific.scheduler.AgentScheduledExecutorServiceImpl$SafeRunnable.run(AgentScheduledExecutorServiceImpl.java:122) [agent-21.1.0-2340.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_292]
	at com.singularity.ee.util.javaspecific.scheduler.ADFutureTask$Sync.innerRunAndReset(ADFutureTask.java:335) [agent-21.1.0-2340.jar:?]
	at com.singularity.ee.util.javaspecific.scheduler.ADFutureTask.runAndReset(ADFutureTask.java:152) [agent-21.1.0-2340.jar:?]
	at com.singularity.ee.util.javaspecific.scheduler.ADScheduledThreadPoolExecutor$ADScheduledFutureTask.access$101(ADScheduledThreadPoolExecutor.java:119) [agent-21.1.0-2340.jar:?]
	at com.singularity.ee.util.javaspecific.scheduler.ADScheduledThreadPoolExecutor$ADScheduledFutureTask.runPeriodic(ADScheduledThreadPoolExecutor.java:206) [agent-21.1.0-2340.jar:?]
	at com.singularity.ee.util.javaspecific.scheduler.ADScheduledThreadPoolExecutor$ADScheduledFutureTask.run(ADScheduledThreadPoolExecutor.java:236) [agent-21.1.0-2340.jar:?]
	at com.singularity.ee.util.javaspecific.scheduler.ADThreadPoolExecutor$Worker.runTask(ADThreadPoolExecutor.java:694) [agent-21.1.0-2340.jar:?]
	at com.singularity.ee.util.javaspecific.scheduler.ADThreadPoolExecutor$Worker.run(ADThreadPoolExecutor.java:726) [agent-21.1.0-2340.jar:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_292]

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