'DBCPConnectionPool' Service Not accepting values stored in attributes

Question

Following are the combination of processors that I am using:-

GetFile + SplitText + ExtractText + UpdateAttribute + ExecuteSQL + ConvertAvroToJson + PutFile 

Basically,I have a properties file which contains 5 comma separated values that are required by the 'DBCPConnectionPool' controller service to establish connection with the database. Here is the content of my properties file:-

jdbc:mysql://localhost:3306/test,com.mysql.jdbc.Driver,C:\Program Files\MySQL\mysql-connector.jar,root,root

Now, I am extracting the values from this properties file and storing them in manually created properties.I am using this regex to store that values into attributes using ExtractText.

ExtractedData: (.*)

Then use updateAttribute processor to manually add 5 properties and get their values from the properties file like below:

connectionURL  : ${ExtractedData:getDelimitedField(1)}
driverClass    : ${ExtractedData:getDelimitedField(2)}
driverLocation : ${ExtractedData:getDelimitedField(3)}
user           : ${ExtractedData:getDelimitedField(4)}
password       : ${ExtractedData:getDelimitedField(5)}

So, by now the attributes have got their values from the properties file and thus following values stored in them:

connectionURL  : jdbc:mysql://localhost:3306/test
driverClass    : com.mysql.jdbc.Driver
driverLocation : C:\Program Files\MySQL\mysql-connector.jar
user           : root
password       : root

Finally, Here is what I am trying to achieve. I am trying to use these above 5 attributes in the DBCPConnectionPool Controller Service like this:

 Database Connection URL     : ${connectionURL}
 Database Driver Class       : ${driverClass}
 Database Driver Location(s) : ${driverLocation}
 Database User               : ${user}
 Password                    : ${password}

But I am unable to establish the connection and I am getting the error 'Cannot create PoolableConnectionFactory'. It seems that the controller service is unable to read the value from the attributes. How can I pass a flowfile attribute to a controller service?

Answer 1

'DBCPConnectionPool' Service Not accepting values stored in attributes

That's not an issue. This is a feature )

Connection to the database established on controller service start and not on flow file passing to the dbcp processor.