private void runStartupRules() {
if (triggerManager != null) {
Iterable<Rule> startupRules = triggerManager.getRules(STARTUP);
List<Rule> executedRules = Lists.newArrayList();
for (Rule rule : startupRules) {
try {
Script script = scriptEngine.newScriptFromXExpression(rule.getScript());
logger.debug("Executing startup rule '{}'", rule.getName());
RuleEvaluationContext context = new RuleEvaluationContext();
context.setGlobalContext(RuleContextHelper.getContext(rule));
script.execute(context);
executedRules.add(rule);
} catch (ScriptExecutionException e) {
String causeMessage = getCauseMessage(e);
if (e.getCause() instanceof ItemNotFoundException
|| causeMessage.contains("cannot be resolved to an item or type")) {
logger.debug(
"Not all required items in place yet for rule {}, trying again later: {}",
new Object[] {rule.getName(), causeMessage});
// we do not seem to have all required items in place yet
// so we keep the rule in the list and try it again later
} else {
logger.error(
"Error during the execution of startup rule '{}': {}",
new Object[] {rule.getName(), causeMessage});
executedRules.add(rule);
}
}
}
for (Rule rule : executedRules) {
triggerManager.removeRule(STARTUP, rule);
}
}
}
protected synchronized void executeRules(Iterable<Rule> rules, State oldState) {
for (Rule rule : rules) {
RuleEvaluationContext context = new RuleEvaluationContext();
context.newValue(QualifiedName.create(RulesJvmModelInferrer.VAR_PREVIOUS_STATE), oldState);
executeRule(rule, context);
}
}
protected synchronized void executeRules(Iterable<Rule> rules, Command command) {
for (Rule rule : rules) {
RuleEvaluationContext context = new RuleEvaluationContext();
context.newValue(QualifiedName.create(RulesJvmModelInferrer.VAR_RECEIVED_COMMAND), command);
executeRule(rule, context);
}
}
private void runStartupRules() {
if (triggerManager != null) {
Iterable<Rule> startupRules = triggerManager.getRules(STARTUP);
List<Rule> executedRules = Lists.newArrayList();
for (Rule rule : startupRules) {
try {
Script script = scriptEngine.newScriptFromXExpression(rule.getScript());
logger.debug("Executing startup rule '{}'", rule.getName());
RuleEvaluationContext context = new RuleEvaluationContext();
context.setGlobalContext(RuleContextHelper.getContext(rule, injector));
script.execute(context);
executedRules.add(rule);
} catch (ScriptExecutionException e) {
if (!e.getMessage().contains("cannot be resolved to an item or type")) {
logger.error(
"Error during the execution of startup rule '{}': {}",
new Object[] {rule.getName(), e.getCause().getMessage()});
executedRules.add(rule);
} else {
logger.debug(
"Execution of startup rule '{}' has been postponed as items are still missing.",
rule.getName());
}
}
}
for (Rule rule : executedRules) {
triggerManager.removeRule(STARTUP, rule);
}
}
}
/** {@inheritDoc} */
public void stateChanged(Item item, State oldState, State newState) {
if (triggerManager != null) {
RuleEvaluationContext context;
Iterable<Rule> rules = triggerManager.getRules(CHANGE, item, oldState, newState);
for (Rule rule : rules) {
context = new RuleEvaluationContext();
context.newValue(QualifiedName.create(RuleContextHelper.VAR_PREVIOUS_STATE), oldState);
executeRule(rule, context);
}
}
}
public void receiveCommand(String itemName, Command command) {
if (triggerManager != null && itemRegistry != null) {
try {
RuleEvaluationContext context;
Item item = itemRegistry.getItem(itemName);
Iterable<Rule> rules = triggerManager.getRules(COMMAND, item, command);
for (Rule rule : rules) {
context = new RuleEvaluationContext();
context.newValue(QualifiedName.create(RuleContextHelper.VAR_RECEIVED_COMMAND), command);
executeRule(rule, context);
}
} catch (ItemNotFoundException e) {
// ignore commands for non-existent items
}
}
}
protected synchronized void executeRule(Rule rule, RuleEvaluationContext context) {
Script script = scriptEngine.newScriptFromXExpression(rule.getScript());
logger.debug("Executing rule '{}'", rule.getName());
context.setGlobalContext(RuleContextHelper.getContext(rule));
ScriptExecutionThread thread = new ScriptExecutionThread(rule.getName(), script, context);
thread.start();
}
