ScenarioController (EngineBlock API)

java.lang.Object
- io.engineblock.core.ScenarioController

```
public class ScenarioController
extends Object
```
A ScenarioController provides a way to start Activities, modify them while running, and forceStopMotors, pause or restart them.

Constructor Summary

Constructors
Constructor and Description

ScenarioController()

Constructors
Constructor and Description
`ScenarioController()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`apply(Map<String,String> appliedParams)` Apply any parameter changes to a defined activity, or start a new one.
`boolean`	`awaitActivity(ActivityDef activityDef)`
`boolean`	`awaitActivity(Map<String,String> activityDefMap)`
`boolean`	`awaitActivity(String alias)`
`boolean`	`awaitCompletion(int waitTimeMillis)` Await completion of all running activities, but do not force shutdownActivity.
`void`	`forceStopScenario(int waitTimeMillis)` Force the scenario to stop running.
`ActivityDef`	`getActivityDef(String alias)` Get the named activity def, if it is known to this scenario.
`List<ActivityDef>`	`getActivityDefs()` Return all the activity definitions that are known to this scenario.
`Map<String,ActivityExecutor>`	`getActivityExecutorMap()`
`Set<String>`	`getAliases()` Return all the names of the activites that are known to this scenario.
`Collection<ProgressMeter>`	`getProgressMeters()`
`boolean`	`isRunningActivity(ActivityDef activityDef)`
`boolean`	`isRunningActivity(Map<String,String> activityDefMap)`
`boolean`	`isRunningActivity(String alias)`
`void`	`modify(String alias, String param, String value)` Modify one of the parameters in a defined activity.
`void`	`reportMetrics()`
`void`	`run(ActivityDef activityDef)`
`void`	`run(int timeout, ActivityDef activityDef)`
`void`	`run(int timeout, Map<String,String> activityDefMap)`
`void`	`run(int timeout, String activityDefString)`
`void`	`run(Map<String,String> activityDefMap)`
`void`	`run(String activityDefString)`
`void`	`start(ActivityDef activityDef)` Start an activity, given the activity definition for it.
`void`	`start(Map<String,String> activityDefMap)` Start an activity, given a map which holds the activity definition for it.
`void`	`start(String alias)` Start an activity, given the name by which it is known already in the scenario.
`void`	`stop(ActivityDef activityDef)` Stop an activity, given an activity def.
`void`	`stop(Map<String,String> activityDefMap)` Stop an activity, given an activity def map.
`void`	`stop(String alias)` Stop an activity, given the name by which it is known already in the scenario.
`void`	`waitMillis(long waitMillis)` Wait for a bit.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ScenarioController
```
public ScenarioController()
```
- Method Detail
  - start
```
public void start(ActivityDef activityDef)
```
    Start an activity, given the activity definition for it. The activity will be known in the scenario by the alias parameter.
    
    Parameters:
    
    activityDef - string in alias=value1;type=value2;... format
  - start
```
public void start(Map<String,String> activityDefMap)
```
    Start an activity, given a map which holds the activity definition for it. The activity will be known in the scenario by the alias parameter.
    
    Parameters:
    
    activityDefMap - A map containing the activity definition
  - start
```
public void start(String alias)
```
    Start an activity, given the name by which it is known already in the scenario. This is useful if you have stopped an activity and want to start it again.
    
    Parameters:
    
    alias - the alias of an activity that is already known to the scenario
  - run
```
public void run(int timeout,
                Map<String,String> activityDefMap)
```
  - run
```
public void run(int timeout,
                ActivityDef activityDef)
```
  - run
```
public void run(int timeout,
                String activityDefString)
```
  - run
```
public void run(Map<String,String> activityDefMap)
```
  - run
```
public void run(String activityDefString)
```
  - run
```
public void run(ActivityDef activityDef)
```
  - isRunningActivity
```
public boolean isRunningActivity(String alias)
```
  - isRunningActivity
```
public boolean isRunningActivity(ActivityDef activityDef)
```
  - isRunningActivity
```
public boolean isRunningActivity(Map<String,String> activityDefMap)
```
  - stop
```
public void stop(ActivityDef activityDef)
```
    Stop an activity, given an activity def. The only part of the activity def that is important is the alias parameter. This method retains the activity def signature to provide convenience for scripting.
    
    For example, sc.stop("alias=foo")
    
    Parameters:
    
    activityDef - An activity def, including at least the alias parameter.
  - stop
```
public void stop(Map<String,String> activityDefMap)
```
    Stop an activity, given an activity def map. The only part of the map that is important is the alias parameter. This method retains the map signature to provide convenience for scripting.
    
    Parameters:
    
    activityDefMap - A map, containing at least the alias parameter
  - stop
```
public void stop(String alias)
```
    Stop an activity, given the name by which it is known already in the scenario. This causes the activity to stop all threads, but keeps the thread objects handy for starting again. This can be useful for certain testing scenarios in which you want to stop some workloads and start others based on other conditions.
    
    Parameters:
    
    alias - The name of the activity that is already known to the scenario
  - modify
```
public void modify(String alias,
                   String param,
                   String value)
```
    Modify one of the parameters in a defined activity. Any observing activity components will be notified of the changes made to activity parameters.
    
    Parameters:
    
    alias - The name of an activity that is already known to the scenario.
    
    param - The parameter name
    
    value - a new parameter value
  - apply
```
public void apply(Map<String,String> appliedParams)
```
    Apply any parameter changes to a defined activity, or start a new one. This method is syntactical sugar for scripting. Each of the parameters in the map is checked against existing values, and per-field modifications are applied one at a time, only if the values have changed.
    
    Parameters:
    
    appliedParams - Map of new values.
  - waitMillis
```
public void waitMillis(long waitMillis)
```
    Wait for a bit. This is not the best approach, and will be replace with a different system in the future.
    
    Parameters:
    
    waitMillis - time to wait, in milliseconds
  - getAliases
```
public Set<String> getAliases()
```
    Return all the names of the activites that are known to this scenario.
    
    Returns:
    
    set of activity names
  - getActivityDefs
```
public List<ActivityDef> getActivityDefs()
```
    Return all the activity definitions that are known to this scenario.
    
    Returns:
    
    list of activity defs
  - getActivityDef
```
public ActivityDef getActivityDef(String alias)
```
    Get the named activity def, if it is known to this scenario.
    
    Parameters:
    
    alias - The name by which the activity is known to this scenario.
    
    Returns:
    
    an ActivityDef instance
    
    Throws:
    
    RuntimeException - if the alias is not known to the scenario
  - forceStopScenario
```
public void forceStopScenario(int waitTimeMillis)
```
    Force the scenario to stop running. Stop all activity threads, and after waitTimeMillis, force stop all activity threads. An activity will stop its threads cooperatively in this time as long as the internal cycles complete before the timer expires.
    
    Parameters:
    
    waitTimeMillis - grace period during which an activity may cooperatively shut down
  - awaitCompletion
```
public boolean awaitCompletion(int waitTimeMillis)
```
    Await completion of all running activities, but do not force shutdownActivity. This method is meant to provide the blocking point for calling logic. It waits.
    
    Parameters:
    
    waitTimeMillis - The time to wait, usually set very high
    
    Returns:
    
    true, if all activities completed before the timer expired, false otherwise
  - awaitActivity
```
public boolean awaitActivity(Map<String,String> activityDefMap)
```
  - awaitActivity
```
public boolean awaitActivity(String alias)
```
  - awaitActivity
```
public boolean awaitActivity(ActivityDef activityDef)
```
  - getActivityExecutorMap
```
public Map<String,ActivityExecutor> getActivityExecutorMap()
```
    Returns:
    
    an unmodifyable String to executor map of all activities known to this scenario
  - reportMetrics
```
public void reportMetrics()
```
  - getProgressMeters
```
public Collection<ProgressMeter> getProgressMeters()
```

Class ScenarioController

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ScenarioController

Method Detail

start

start

start

run

run

run

run

run

run

isRunningActivity

isRunningActivity

isRunningActivity

stop

stop

stop

modify

apply

waitMillis

getAliases

getActivityDefs

getActivityDef

forceStopScenario

awaitCompletion

awaitActivity

awaitActivity

awaitActivity

getActivityExecutorMap

reportMetrics

getProgressMeters