Simulations use gatling gradle plugin "com.github.lkishalmi.gatling" v0.7.4. Any higher versions won't work since dse gatling plugin only supports gatling.core 2.3
Java: 1.8 Scala: 2.12.8 Gatling: 2.3 Gradle: 6.6.1 Gradle build might fail if using newer versions
gradle clean build
gradle clean fatJar This creates, cam_datastax_gatling-all.jar in build/libs folder.
#gradle run after build
gradle gatlingRun-sims.examples.cql.accounts.ReadWriteAccountSimulation
#using fat/uber jar
(cd to build/libs directory or where ever the uber jar(cam_datastax_gatling-all.jar) is located)
Java -jar cam_datastax_gatling-all.jar listSims list all simulations
Java -jar cam_datastax_gatling-all.jar run sims.examples.cql.accounts.ReadWriteAccountSimulation
#explicitly use starter app to run gatling sims
Java -cp cam_datastax_gatling-all.jar com.datastax.gatling.stress.Starter listSims
Java -cp cam_datastax_gatling-all.jar com.datastax.gatling.stress.Starter run sims.examples.cql.accounts.ReadWriteAccountSimulation
#create an executable and run simulations
./create_sim_exec.sh Creates an executable for the jar in build/libs
use the executable to list and run simulations
./cam_datastax_gatling-all listSims List Simulations
./cam_datastax_gatling-all run sims.examples.cql.accounts.ReadWriteAccountSimulation Run a simulation
Project configs can be found in the src/main/resources the application.conf is the file to set the Simulation and Cassandra settings.
#Overriding configuration during runtime
#Overriding the whole application.conf that's in the jar with a conf file.
#uncomment the datastax-java-driver attributes if those need to be overridden
Java -Dconfig.file=/"path of new config file/config_filename.conf -jar cam_datastax_gatling-all.jar run "simulation class name with package prefix"
example: Java -Dconfig.file=~/config/newconfig.conf -jar cam_datastax_gatling-all.jar run sims.examples.cql.accounts.ReadWriteAccountSimulation
#override UserCount and usersRampTime
Java -Dsimulations.cam.writeAccount.usersConstantCnt=23 -Dsimulations.cam.defaults.usersRampTime=40s -jar cam_datastax_gatling-all.jar run sims.examples.cql.accounts.ReadWriteAccountSimulation
#override the cassandra host(with data center), with default simulation settings configured for the app
Java -Ddatastax-java-driver.basic.contact-points.0="127.0.0.1:9042" -Ddatastax-java-driver.basic.load-balancing-policy.local-datacenter=Cassandra -jar cam_datastax_gatling-all.jar run sims.examples.cql.accounts.ReadWriteAccountSimulation sss
#override contact-point(host)(setting datacenter is required when setting contact-point),
#and also override default simulation setting for UserCount and usersRampTime
Java -Ddatastax-java-driver.basic.contact-points.0="127.0.0.1:9042" -Ddatastax-java-driver.basic.load-balancing-policy.local-datacenter=Cassandra -Dsimulations.cam.writeAccount.usersConstantCnt=23 -Dsimulations.cam.defaults.usersRampTime=20s -jar cam_datastax_gatling-all.jar run sims.examples.cql.accounts.ReadWriteAccountSimulation
#override the cassandra login credentials and simulation attributes
Note: datastax-java-driver.advanced.auth-provider.class=PlainTextAuthProvider is required to be set for login credential override to work. Also using default cassandra credentials, cassandra/cassandra.
Java -Ddatastax-java-driver.basic.contact-points.0="127.0.0.1:9042" -Ddatastax-java-driver.basic.load-balancing-policy.local-datacenter=Cassandra -Ddatastax-java-driver.advanced.auth-provider.class=PlainTextAuthProvider -Ddatastax-java-driver.advanced.auth-provider.username=cassandra -Ddatastax-java-driver.advanced.auth-provider.password=cassandra -Dsimulations.cam.writeAccount.usersConstantCnt=25 -Dsimulations.cam.defaults.usersRampTime=30s -jar cam_datastax_gatling-all.jar run sims.examples.cql.accounts.ReadWriteAccountSimulation
#local authentication testing
#enable dse internal authentication by uncommenting the following and set enable to true in dse.yaml
authentication_options: enabled: true default_scheme: internal