/** {@inheritDoc} */
@Override
protected void internalReceiveCommand(String itemName, Command command) {
try {
logger.debug("internalReceiveCommand: itemName '{}', command '{}'", itemName, command);
// Lookup the MiOS Unit name and property for this item
String unitName = getMiosUnitName(itemName);
MiosUnitConnector connector = getMiosConnector(unitName);
if (connector == null) {
logger.warn(
"Received command ({}) for item '{}' but no connector found for MiOS Unit '{}', ignoring",
new Object[] {command.toString(), itemName, unitName});
return;
}
if (!connector.isConnected()) {
logger.warn(
"Received command ({}) for item '{}' but the connection to the MiOS Unit '{}' is down, ignoring",
new Object[] {command.toString(), itemName, unitName});
return;
}
for (BindingProvider provider : providers) {
if (provider instanceof MiosBindingProvider) {
MiosBindingProviderImpl miosProvider = (MiosBindingProviderImpl) provider;
MiosBindingConfig config = miosProvider.getMiosBindingConfig(itemName);
if (config != null) {
ItemRegistry reg = miosProvider.getItemRegistry();
if (reg != null) {
Item item = reg.getItem(config.getItemName());
State state = item.getState();
connector.invokeCommand(config, command, state);
} else {
logger.warn(
"internalReceiveCommand: Missing ItemRegistry for item '{}' command '{}'",
itemName,
command);
}
} else {
logger.trace(
"internalReceiveCommand: Missing BindingConfig for item '{}' command '{}'",
itemName,
command);
}
}
}
} catch (Exception e) {
logger.error("Error handling command", e);
}
}
/**
* Sends a command for a specified item to the event bus.
*
* @param itemName the name of the item to send the command to
* @param commandString the command to send
*/
public static Object sendCommand(String itemName, String commandString) {
ItemRegistry registry = (ItemRegistry) ScriptActivator.itemRegistryTracker.getService();
EventPublisher publisher = (EventPublisher) ScriptActivator.eventPublisherTracker.getService();
if (publisher != null && registry != null) {
try {
Item item = registry.getItem(itemName);
Command command = TypeParser.parseCommand(item.getAcceptedCommandTypes(), commandString);
publisher.sendCommand(itemName, command);
} catch (ItemNotFoundException e) {
logger.warn("Item '" + itemName + "' does not exist.");
}
}
return null;
}
/**
* Posts a status update for a specified item to the event bus.
*
* @param itemName the name of the item to send the status update for
* @param stateAsString the new state of the item
*/
public static Object postUpdate(String itemName, String stateString) {
ItemRegistry registry = (ItemRegistry) ScriptActivator.itemRegistryTracker.getService();
EventPublisher publisher = (EventPublisher) ScriptActivator.eventPublisherTracker.getService();
if (publisher != null && registry != null) {
try {
Item item = registry.getItem(itemName);
State state = TypeParser.parseState(item.getAcceptedDataTypes(), stateString);
publisher.postUpdate(itemName, state);
} catch (ItemNotFoundException e) {
logger.warn("Item '" + itemName + "' does not exist.");
}
}
return null;
}
public ItemStateData getItemState(String itemId) throws ServiceException {
ItemRegistry itemRegistry = getItemRegistry();
ItemStateData itemState = null;
try {
Item item = itemRegistry.getItem(itemId);
StateTransformable state = getState(item);
itemState = new ItemStateData(System.currentTimeMillis(), itemId, state);
} catch (ItemNotFoundException ex) {
logger.info(itemId + " not found", ex);
}
return itemState;
}
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
}
}
}
private void internalPropertyUpdate(String property, State value, boolean incremental)
throws Exception {
int bound = 0;
if (value == null) {
logger.trace("internalPropertyUpdate: Value is null for Property '{}', ignored.", property);
return;
}
for (BindingProvider provider : providers) {
if (provider instanceof MiosBindingProvider) {
MiosBindingProviderImpl miosProvider = (MiosBindingProviderImpl) provider;
for (String itemName : miosProvider.getItemNamesForProperty(property)) {
MiosBindingConfig config = miosProvider.getMiosBindingConfig(itemName);
if (config != null) {
// Transform whatever value we have, based upon the
// Transformation Service specified in the Binding
// Config.
State newValue = config.transformIn(value);
if (newValue != value) {
logger.trace(
"internalPropertyUpdate: transformation performed, from '{}' to '{}'",
value,
newValue);
}
//
// Set the value only if:
// * we're running Incrementally OR;
// * the CURRENT value is UNDEFINED OR;
// * the CURRENT value is different from the NEW value
//
// This is to handle a case where the MiOS Unit
// "restarts" and floods us with a bunch of the same
// data. In this case, we don't want to flood the Items,
// since it may re-trigger a bunch of Rules in an
// unnecessary manner.
//
if (incremental) {
logger.debug(
"internalPropertyUpdate: BOUND (Incr) Updating '{} {mios=\"{}\"}' to '{}'",
itemName,
property,
newValue);
eventPublisher.postUpdate(itemName, newValue);
} else {
ItemRegistry reg = miosProvider.getItemRegistry();
State oldValue = reg.getItem(itemName).getState();
if ((oldValue == null && newValue != null)
|| (UnDefType.UNDEF.equals(oldValue) && !UnDefType.UNDEF.equals(newValue))
|| !oldValue.equals(newValue)) {
logger.debug(
"internalPropertyUpdate: BOUND (Full) Updating '{} {mios=\"{}\"}' to '{}', was '{}'",
new Object[] {itemName, property, newValue, oldValue});
eventPublisher.postUpdate(itemName, newValue);
} else {
logger.trace(
"internalPropertyUpdate: BOUND (Full) Ignoring '{} {mios=\"{}\"}' to '{}', was '{}'",
new Object[] {itemName, property, newValue, oldValue});
}
}
bound++;
} else {
logger.trace(
"internalPropertyUpdate: Found null BindingConfig for item '{}' property '{}'",
itemName,
property);
}
}
}
}
if (bound == 0) {
logger.trace("internalPropertyUpdate: NOT BOUND {mios=\"{}\"}, value={}", property, value);
} else {
logger.trace(
"internalPropertyUpdate: BOUND {mios=\"{}\"}, value={}, bound {} time(s)",
new Object[] {property, value, bound});
}
}