| /** |
| * 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.metron.enrichment.adapters.stellar; |
| |
| import org.apache.metron.common.configuration.enrichment.SensorEnrichmentConfig; |
| import org.apache.metron.common.configuration.enrichment.handler.ConfigHandler; |
| import org.apache.metron.common.dsl.Context; |
| import org.apache.metron.common.dsl.MapVariableResolver; |
| import org.apache.metron.common.dsl.StellarFunctions; |
| import org.apache.metron.common.dsl.VariableResolver; |
| import org.apache.metron.common.stellar.StellarProcessor; |
| import org.apache.metron.common.utils.ConversionUtils; |
| import org.apache.metron.enrichment.bolt.CacheKey; |
| import org.apache.metron.enrichment.interfaces.EnrichmentAdapter; |
| import org.json.simple.JSONObject; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.function.Function; |
| |
| import static org.apache.metron.enrichment.bolt.GenericEnrichmentBolt.STELLAR_CONTEXT_CONF; |
| |
| public class StellarAdapter implements EnrichmentAdapter<CacheKey>,Serializable { |
| public static class Perf {} |
| protected static final Logger _LOG = LoggerFactory.getLogger(StellarAdapter.class); |
| protected static final Logger _PERF_LOG = LoggerFactory.getLogger(Perf.class); |
| public static final String STELLAR_SLOW_LOG = "stellar.slow.threshold.ms"; |
| public static final Long STELLAR_SLOW_LOG_DEFAULT = 1000l; |
| |
| private enum EnrichmentType implements Function<SensorEnrichmentConfig, ConfigHandler>{ |
| ENRICHMENT(config -> config.getEnrichment().getEnrichmentConfigs().get("stellar")) |
| ,THREAT_INTEL(config -> config.getThreatIntel().getEnrichmentConfigs().get("stellar")) |
| ; |
| Function<SensorEnrichmentConfig, ConfigHandler> func; |
| EnrichmentType(Function<SensorEnrichmentConfig, ConfigHandler> func) { |
| this.func = func; |
| } |
| |
| @Override |
| public ConfigHandler apply(SensorEnrichmentConfig cacheKey) { |
| return func.apply(cacheKey); |
| } |
| } |
| transient Function<SensorEnrichmentConfig, ConfigHandler> getHandler; |
| private String enrichmentType; |
| public StellarAdapter ofType(String enrichmentType) { |
| this.enrichmentType = enrichmentType; |
| return this; |
| } |
| @Override |
| public String getOutputPrefix(CacheKey value) { |
| return ""; |
| } |
| |
| @Override |
| public void logAccess(CacheKey value) { |
| |
| } |
| |
| @Override |
| public String getStreamSubGroup(String enrichmentType, String field) { |
| return field; |
| } |
| |
| public static Iterable<Map.Entry<String, Object>> getStellarStatements(ConfigHandler handler, String field) { |
| if(field.length() == 0) { |
| return handler.getType().toConfig(handler.getConfig()); |
| } |
| else { |
| Map<String, Object> groupStatements = (Map<String, Object>)handler.getConfig(); |
| return handler.getType().toConfig(groupStatements.get(field)); |
| } |
| } |
| |
| public static JSONObject process( Map<String, Object> message |
| , ConfigHandler handler |
| , String field |
| , Long slowLogThreshold |
| , StellarProcessor processor |
| , VariableResolver resolver |
| , Context stellarContext |
| ) |
| { |
| JSONObject ret = new JSONObject(); |
| Iterable<Map.Entry<String, Object>> stellarStatements = getStellarStatements(handler, field); |
| |
| _LOG.debug("message := {}", message); |
| if(stellarStatements != null) { |
| List<String> mapEntries = new ArrayList<>(); |
| for (Map.Entry<String, Object> kv : stellarStatements) { |
| if(kv.getKey() != null && kv.getValue() != null) { |
| if (kv.getValue() instanceof String) { |
| long startTime = System.currentTimeMillis(); |
| String stellarStatement = (String) kv.getValue(); |
| Object o = processor.parse(stellarStatement, resolver, StellarFunctions.FUNCTION_RESOLVER(), stellarContext); |
| if (slowLogThreshold != null && _PERF_LOG.isDebugEnabled()) { |
| long duration = System.currentTimeMillis() - startTime; |
| if (duration > slowLogThreshold) { |
| _PERF_LOG.debug("SLOW LOG: " + stellarStatement + " took" + duration + "ms"); |
| } |
| } |
| _LOG.debug("{} := {} yields {}", kv.getKey(), stellarStatement , o); |
| if (o != null && o instanceof Map) { |
| mapEntries.add(kv.getKey()); |
| } |
| if(o == null) { |
| message.remove(kv.getKey()); |
| ret.remove(kv.getKey()); |
| } |
| else { |
| message.put(kv.getKey(), o); |
| ret.put(kv.getKey(), o); |
| } |
| } |
| } |
| } |
| /* |
| We need to handle the map entries separately now. |
| We want to explode them out, so if "var" is |
| { |
| "foo" : "bar" |
| } |
| then we want "var.foo" == "bar" |
| and no "var" |
| */ |
| for(String mapEntry : mapEntries) { |
| String key = mapEntry; |
| Map<Object, Object> value = (Map<Object, Object>) ret.get(key); |
| if(value != null) { |
| _LOG.debug("Exploding map: {} == {}", key, value); |
| for (Map.Entry<Object, Object> valueKv : value.entrySet()) { |
| String newKey = ((key.length() > 0) ? key + "." : "") + valueKv.getKey(); |
| ret.put(newKey, valueKv.getValue()); |
| } |
| //removing the map from downstream |
| ret.remove(key); |
| } |
| } |
| } |
| return ret; |
| } |
| |
| @Override |
| public JSONObject enrich(CacheKey value) { |
| Context stellarContext = (Context) value.getConfig().getConfiguration().get(STELLAR_CONTEXT_CONF); |
| ConfigHandler handler = getHandler.apply(value.getConfig()); |
| Map<String, Object> globalConfig = value.getConfig().getConfiguration(); |
| Map<String, Object> sensorConfig = value.getConfig().getEnrichment().getConfig(); |
| if(handler == null) { |
| _LOG.trace("Stellar ConfigHandler is null."); |
| return new JSONObject(); |
| } |
| Long slowLogThreshold = null; |
| if(_PERF_LOG.isDebugEnabled()) { |
| slowLogThreshold = ConversionUtils.convert(globalConfig.getOrDefault(STELLAR_SLOW_LOG, STELLAR_SLOW_LOG_DEFAULT), Long.class); |
| } |
| Map<String, Object> message = value.getValue(Map.class); |
| VariableResolver resolver = new MapVariableResolver(message, sensorConfig, globalConfig); |
| StellarProcessor processor = new StellarProcessor(); |
| JSONObject enriched = process(message |
| , handler |
| , value.getField() |
| , slowLogThreshold |
| , processor |
| , resolver |
| , stellarContext |
| ); |
| _LOG.trace("Stellar Enrichment Success: {}", enriched); |
| return enriched; |
| } |
| |
| @Override |
| public boolean initializeAdapter(Map<String, Object> config) { |
| getHandler = EnrichmentType.valueOf(enrichmentType); |
| return true; |
| } |
| |
| @Override |
| public void updateAdapter(Map<String, Object> config) { |
| } |
| |
| @Override |
| public void cleanup() { |
| |
| } |
| } |