Execute Groovy Code
This type of task allows to execute a code written in the Groovy script language.
The script can be defined in place or using a path to external .groovy
file.
It is possible to use some variables.
The basic attribute of this task is a source code of written in Groovy.
If the source codes are provided from both a file and through the input form, only the code from the input form will be executed.
In Cluster environment, there is also one additional attribute Node IDs to process the task. If it is empty, it may be any node; if there are nodes specified, the task will be processed on the first node which is online and ready.
CloverDX Server contains Groovy version 2.0.0
Table 34.12. List of variables available in Groovy code
Variable | Class | Description | Availability |
---|---|---|---|
event | com.cloveretl.server.events.AbstractServerEvent | every time | |
task | com.cloveretl.server.persistent.Task | every time | |
now | java.util.Date | current time | every time |
parameters | java.util.Properties | Properties of a task | every time |
user | com.cloveretl.server. persistent.User | Same as event.getUser() | every time |
run | com.cloveretl.server. persistent.RunRecord | When the event is an instance of GraphServerEvent | |
tracking | com.cloveretl.server. worker.commons.persistent.TrackingGraph | same as run.getTrackingGraph() | When the event is an instance of GraphServerEvent |
sandbox | com.cloveretl.server. persistent.Sandbox | same as run.getSandbox() | When the event is an instance of GraphServerEvent |
schedule | com.cloveretl.server. persistent.Schedule | same as ((ScheduleServerEvent)event). getSchedule() | When the event is an instance of ScheduleServerEvent |
servletContext | javax.servlet.ServletContext | every time | |
cloverConfiguration | com.cloveretl.server.spring.CloverConfiguration | Configuration values for CloverDX Server | every time |
serverFacade | com.cloveretl.server.facade. api.ServerFacade | The reference to the facade interface. Useful for calling CloverDX Server core. WAR file contains JavaDoc of facade API and it is accessible on URL: http://host:port/clover/javadoc/index.html | every time |
sessionToken | String | A valid session token of the user who owns the event. It is useful for authorization to the facade interface. | every time |
Variables run, tracking and sandbox are available only if the event is an instance of GraphServerEvent class. A variable schedule is only available for ScheduleServerEvent as an event variable class.
Example of use Groovy script
This example shows a script which writes a text file describing the finished graph. It shows use of the 'run' variable.
import com.cloveretl.server.persistent.RunRecord; String dir = "/tmp/"; RunRecord rr = (RunRecord)run ; String fileName = "report"+rr.getId()+"_finished.txt"; FileWriter fw = new FileWriter(new File(dir+fileName)); fw.write("Run ID :"+rr.getId()+"\n"); fw.write("Graph ID :"+rr.getGraphId()+"\n"); fw.write("Sandbox :"+rr.getSandbox().getName()+"\n"); fw.write("\n"); fw.write("Start time :"+rr.getStartTime()+"\n"); fw.write("Stop time :"+rr.getStopTime()+"\n"); fw.write("Duration :"+rr.getDurationString()+"\n"); fw.write("Status :"+rr.getStatus()+"\n"); fw.close();