Github user geomacy commented on a diff in the pull request: https://github.com/apache/brooklyn-server/pull/192#discussion_r66596473 --- Diff: core/src/main/java/org/apache/brooklyn/core/network/AbstractOnNetworkEnricher.java --- @@ -0,0 +1,407 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.brooklyn.core.network; + +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URL; +import java.util.Collection; + +import org.apache.brooklyn.api.entity.Entity; +import org.apache.brooklyn.api.entity.EntityLocal; +import org.apache.brooklyn.api.location.Location; +import org.apache.brooklyn.api.location.MachineLocation; +import org.apache.brooklyn.api.sensor.AttributeSensor; +import org.apache.brooklyn.api.sensor.Sensor; +import org.apache.brooklyn.api.sensor.SensorEvent; +import org.apache.brooklyn.api.sensor.SensorEventListener; +import org.apache.brooklyn.config.ConfigKey; +import org.apache.brooklyn.core.config.ConfigKeys; +import org.apache.brooklyn.core.enricher.AbstractEnricher; +import org.apache.brooklyn.core.entity.AbstractEntity; +import org.apache.brooklyn.core.location.Machines; +import org.apache.brooklyn.core.location.access.PortForwardManager; +import org.apache.brooklyn.core.sensor.Sensors; +import org.apache.brooklyn.util.core.flags.TypeCoercions; +import org.apache.brooklyn.util.exceptions.Exceptions; +import org.apache.brooklyn.util.guava.Maybe; +import org.apache.brooklyn.util.net.Networking; +import org.apache.brooklyn.util.text.StringPredicates; +import org.apache.brooklyn.util.text.Strings; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.google.common.annotations.Beta; +import com.google.common.base.Function; +import com.google.common.base.Optional; +import com.google.common.base.Predicate; +import com.google.common.collect.Lists; +import com.google.common.net.HostAndPort; +import com.google.common.reflect.TypeToken; + +@Beta +public abstract class AbstractOnNetworkEnricher extends AbstractEnricher { + + private static final Logger LOG = LoggerFactory.getLogger(AbstractOnNetworkEnricher.class); + + @SuppressWarnings("serial") + public static final ConfigKey<AttributeSensor<?>> SENSOR = ConfigKeys.newConfigKey( + new TypeToken<AttributeSensor<?>>() {}, + "sensor", + "The sensor whose mapped value is to be re-published (with suffix \"mapped.networkName\"); " + + "either 'sensor' or 'sensors' should be specified"); + + @SuppressWarnings("serial") + public static ConfigKey<Collection<? extends AttributeSensor<?>>> SENSORS = ConfigKeys.newConfigKey( + new TypeToken<Collection<? extends AttributeSensor<?>>>() {}, + "sensors", + "The multiple sensors whose mapped values are to be re-published (with suffix \"mapped.networkName\"); " + + "if neither 'sensor' or 'sensors' is specified, defaults to 'mapAll'"); + + public static ConfigKey<String> MAP_MATCHING = ConfigKeys.newStringConfigKey( + "mapMatching", + "Whether to map all, based on a sensor naming convention (re-published with suffix \"mapped.networkName\"); " + + "if neither 'sensor' or 'sensors' is specified, defaults to matchin case-insensitive suffix of " + + "'port', 'uri', 'url' or 'endpoint' ", + "(?i).*(port|uri|url|endpoint)"); + + @SuppressWarnings("serial") + public static ConfigKey<Function<? super String, String>> SENSOR_NAME_CONVERTER = ConfigKeys.newConfigKey( + new TypeToken<Function<? super String, String>>() {}, + "sensorNameConverter", + "The converter to use, to map from the original sensor name to the re-published sensor name"); + + public static class SensorNameConverter implements Function<String, String> { + private final String network; + + public SensorNameConverter(String network) { + this.network = network; + } + + @Override + public String apply(String input) { + if (input == null) throw new NullPointerException("Sensor name must not be null"); + String lowerInput = input.toLowerCase(); + if (lowerInput.endsWith("uri")) { + return input + ".mapped." + network; + } else if (lowerInput.endsWith("url")) { + return input + ".mapped." + network; + } else if (lowerInput.endsWith("endpoint")) { + return input + ".mapped." + network; + } else if (lowerInput.endsWith("port")) { + String prefix = input.substring(0, input.length() - "port".length()); + if (prefix.endsWith(".")) prefix = prefix.substring(0, prefix.length() - 1); + return prefix + ".endpoint.mapped." + network; + } else { + return input + ".mapped." + network; + } + } + } + + protected Collection<AttributeSensor<?>> sensors; + protected Optional<Predicate<Sensor<?>>> mapMatching; + protected Function<? super String, String> sensorNameConverter; + protected PortForwardManager.AssociationListener pfmListener; + + protected abstract Optional<HostAndPort> getMappedEndpoint(Entity source, MachineLocation machine, int port); + + @Override + public void setEntity(final EntityLocal entity) { + super.setEntity(entity); + + checkConfig(); + sensors = resolveSensorsConfig(); + if (sensors.isEmpty()) { + mapMatching = Optional.of(resolveMapMatchingConfig()); + } else { + mapMatching = Optional.absent(); + } + sensorNameConverter = getRequiredConfig(SENSOR_NAME_CONVERTER); + + subscriptions().subscribe(entity, AbstractEntity.LOCATION_ADDED, new SensorEventListener<Location>() { + @Override public void onEvent(SensorEvent<Location> event) { + LOG.debug("{} attempting transformations, triggered by location-added {}, to {}", new Object[] {AbstractOnNetworkEnricher.this, event.getValue(), entity}); + tryTransformAll(); + }}); + + for (AttributeSensor<?> sensor : sensors) { + subscriptions().subscribe(entity, sensor, new SensorEventListener<Object>() { + @Override public void onEvent(SensorEvent<Object> event) { + LOG.debug("{} attempting transformations, triggered by sensor-event {}->{}, to {}", + new Object[] {AbstractOnNetworkEnricher.this, event.getSensor().getName(), event.getValue(), entity}); + tryTransform((AttributeSensor<?>)event.getSensor()); + }}); + } + if (mapMatching.isPresent()) { + Sensor<?> wildcardSensor = null; + subscriptions().subscribe(entity, wildcardSensor, new SensorEventListener<Object>() { + @Override public void onEvent(SensorEvent<Object> event) { + if (mapMatching.get().apply(event.getSensor())) { + LOG.debug("{} attempting transformations, triggered by sensor-event {}->{}, to {}", + new Object[] {AbstractOnNetworkEnricher.this, event.getSensor().getName(), event.getValue(), entity}); + tryTransform((AttributeSensor<?>)event.getSensor()); + } + }}); + } + + tryTransformAll(); + } + + protected void tryTransformAll() { + if (!isRunning()) { + return; + } + Maybe<MachineLocation> machine = getMachine(); + if (machine.isAbsent()) { + return; + } + for (AttributeSensor<?> sensor : sensors) { + try { + tryTransform(machine.get(), sensor); + } catch (Exception e) { + // TODO Avoid repeated logging + Exceptions.propagateIfFatal(e); + LOG.warn("Problem transforming sensor "+sensor+" of "+entity, e); + } + } + if (mapMatching.isPresent()) { + for (Sensor<?> sensor : entity.getEntityType().getSensors()) { + if (sensor instanceof AttributeSensor && mapMatching.get().apply(sensor)) { + try { + tryTransform(machine.get(), (AttributeSensor<?>)sensor); + } catch (Exception e) { + // TODO Avoid repeated logging + Exceptions.propagateIfFatal(e); + LOG.warn("Problem transforming sensor "+sensor+" of "+entity, e); + } + } + } + } + } + + protected void tryTransform(AttributeSensor<?> sensor) { + if (!isRunning()) { + return; + } + Maybe<MachineLocation> machine = getMachine(); + if (machine.isAbsent()) { + return; + } + tryTransform(machine.get(), sensor); + } + + protected void tryTransform(MachineLocation machine, AttributeSensor<?> sensor) { + Object sensorVal = entity.sensors().get(sensor); + if (sensorVal == null) { + return; + } + Maybe<String> newVal = transformVal(machine, sensor, sensorVal); + if (newVal.isAbsent()) { + return; + } + AttributeSensor<String> mappedSensor = Sensors.newStringSensor(sensorNameConverter.apply(sensor.getName())); + if (newVal.get().equals(entity.sensors().get(mappedSensor))) { + // ignore duplicate + return; + } + LOG.debug("{} publishing value {} (original sensor value {}) for mapped sensor {}, of entity {}", + new Object[] {this, newVal.get(), sensorVal, mappedSensor, entity}); + entity.sensors().set(mappedSensor, newVal.get()); + } + + protected Maybe<String> transformVal(MachineLocation machine, AttributeSensor<?> sensor, Object sensorVal) { + if (sensorVal == null) { + return Maybe.absent(); + } else if (isPort(sensorVal)) { + int port = toInteger(sensorVal); + return transformPort(entity, machine, port); + } else if (isUri(sensorVal)) { + return transformUri(entity, machine, sensorVal.toString()); + } else if (isHostAndPort(sensorVal)) { + return transformHostAndPort(entity, machine, sensorVal.toString()); + } else { + // no-op; unrecognised type + return Maybe.absent(); + } + } + + protected boolean isUri(Object sensorVal) { + if (sensorVal instanceof URI || sensorVal instanceof URL) { + return true; + } + try { + URI uri = new URI(sensorVal.toString()); + return uri.getScheme() != null; + } catch (URISyntaxException e) { + return false; + } + } + + protected boolean isPort(Object sensorVal) { + if (sensorVal instanceof Integer || sensorVal instanceof Long) { + return Networking.isPortValid(((Number)sensorVal).intValue()); + } else if (sensorVal instanceof CharSequence) { + return sensorVal.toString().trim().matches("[0-9]+"); --- End diff -- Is it not worth doing the isPortValid check here too? i.e. convert to number and then same as line 258
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