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Diffstat (limited to 'feature-mdc-filters/src/main/java/org/onap/policy/drools/mdc/filters/MdcTopicFilter.java')
-rwxr-xr-xfeature-mdc-filters/src/main/java/org/onap/policy/drools/mdc/filters/MdcTopicFilter.java330
1 files changed, 0 insertions, 330 deletions
diff --git a/feature-mdc-filters/src/main/java/org/onap/policy/drools/mdc/filters/MdcTopicFilter.java b/feature-mdc-filters/src/main/java/org/onap/policy/drools/mdc/filters/MdcTopicFilter.java
deleted file mode 100755
index 36f63efd..00000000
--- a/feature-mdc-filters/src/main/java/org/onap/policy/drools/mdc/filters/MdcTopicFilter.java
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * ONAP
- * ================================================================================
- * Copyright (C) 2019, 2021 AT&T Intellectual Property. All rights reserved.
- * ================================================================================
- * Licensed 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.
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.drools.mdc.filters;
-
-import com.google.re2j.Pattern;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import lombok.AllArgsConstructor;
-import lombok.Getter;
-import org.apache.commons.lang3.StringUtils;
-import org.onap.policy.drools.protocol.coders.JsonProtocolFilter;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public class MdcTopicFilter {
-
- private static final Logger logger = LoggerFactory.getLogger(MdcTopicFilter.class);
- private static final Pattern COMMA_SPACE_PAT = Pattern.compile("\\s*,\\s*");
- private static final Pattern EQUAL_PAT = Pattern.compile("\\s*=\\s*");
-
- public static final String MDC_KEY_ERROR = "mdcKey must be provided";
- public static final String JSON_PATH_ERROR = "json path(s) must be provided";
-
- private final Map<String, FilterRule> rules = new HashMap<>();
-
- @Getter
- @AllArgsConstructor
- public static class FilterRule {
- private String mdcKey;
- private List<String> paths;
-
- public FilterRule(String mdcKey, String path) {
- this.mdcKey = mdcKey;
- this.paths = Arrays.asList(path);
- }
-
- protected void setMdcKey(String mdcKey) {
- if (StringUtils.isBlank(mdcKey)) {
- throw new IllegalArgumentException(MDC_KEY_ERROR);
- }
- this.mdcKey = mdcKey;
- }
-
- protected void setPaths(List<String> paths) {
- if (nullOrEmpty(paths)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
- this.paths = paths;
- }
-
- protected void addPaths(List<String> paths) {
- if (nullOrEmpty(paths)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
- this.paths.addAll(paths);
- }
-
- protected void addPath(String path) {
- if (StringUtils.isBlank(path)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
- this.paths.add(path);
- }
- }
-
- protected MdcTopicFilter(String rawFilters) {
- for (String filter : COMMA_SPACE_PAT.split(rawFilters)) {
- var rule = createFilterRule(filter);
- rules.put(rule.mdcKey, rule);
- }
- }
-
- private FilterRule createFilterRule(String filter) {
- String[] filterKeyPaths = EQUAL_PAT.split(filter);
- if (filterKeyPaths.length != 2) {
- throw new IllegalArgumentException("could not parse filter rule");
- }
-
- String filterKey = filterKeyPaths[0];
- String paths = filterKeyPaths[1];
- List<String> filterPaths = new ArrayList<>(Arrays.asList(paths.split("(?<!\\|)\\|(?!\\|)")));
- return new FilterRule(filterKey, filterPaths);
- }
-
- /**
- * Gets all the filter rules for the topic.
- *
- * @return an array list of the rules for the topic
- */
- protected List<FilterRule> getFilterRule() {
- return new ArrayList<>(rules.values());
- }
-
- /**
- * Gets the filter rule for the specified key.
- *
- * @param mdcKey the key to the filter rule
- * @return the filter rule associated with the key
- */
- protected FilterRule getFilterRule(String mdcKey) {
- if (StringUtils.isBlank(mdcKey)) {
- throw new IllegalArgumentException(MDC_KEY_ERROR);
- }
- return rules.get(mdcKey);
- }
-
- /**
- * Adds a filter rule for the specified key and path.
- *
- * @param mdcKey the key to the filter rule
- * @param path the json path to the key
- * @return the filter rule that was added for the topic
- */
- protected FilterRule addFilterRule(String mdcKey, String path) {
- if (StringUtils.isBlank(path)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
- return addFilterRule(mdcKey, Arrays.asList(path));
- }
-
- /**
- * Adds a filter rule for the specified key and paths.
- *
- * @param mdcKey the key to the filter rule
- * @param paths the list of potential paths to the key
- * @return the filter rule that was added for the topic
- */
- protected FilterRule addFilterRule(String mdcKey, List<String> paths) {
- if (StringUtils.isBlank(mdcKey)) {
- throw new IllegalArgumentException(MDC_KEY_ERROR);
- }
-
- if (nullOrEmpty(paths)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
-
- if (rules.containsKey(mdcKey)) {
- throw new IllegalArgumentException("a filter rule already exists for key: " + mdcKey);
- }
-
- var rule = new FilterRule(mdcKey, paths);
- rules.put(mdcKey, rule);
- return rule;
- }
-
- private static boolean nullOrEmpty(List<String> paths) {
- return paths == null || paths.isEmpty();
- }
-
- /**
- * Modifies an existing filter rule by adding the specified path.
- *
- * @param mdcKey the key to the filter rule
- * @param path the path to the key
- * @return the filter rule that was modified
- */
- protected FilterRule modifyFilterRule(String mdcKey, String path) {
- if (StringUtils.isBlank(path)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
- return modifyFilterRule(mdcKey, Arrays.asList(path));
- }
-
- /**
- * Modifies an existing filter rule by adding the specified paths.
- *
- * @param mdcKey the key to the filter rule
- * @param paths the list of potential paths to the key
- * @return the filter rule that was modified
- */
- protected FilterRule modifyFilterRule(String mdcKey, List<String> paths) {
- if (StringUtils.isBlank(mdcKey)) {
- throw new IllegalArgumentException(MDC_KEY_ERROR);
- }
-
- if (nullOrEmpty(paths)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
-
- if (!rules.containsKey(mdcKey)) {
- throw new IllegalArgumentException("a filter rule doesn't exist for key: " + mdcKey);
- }
-
- FilterRule rule = rules.get(mdcKey);
- rule.addPaths(paths);
- return rule;
- }
-
- /**
- * Modifies an existing filter rule's key and replaces the paths with the specified
- * paths.
- *
- * @param oldMdcKey the old key to the filter rule
- * @param newMdcKey the new key to the filter rule
- * @param paths the list of potential paths to the key
- * @return the filter rule that was modified
- */
- protected FilterRule modifyFilterRule(String oldMdcKey, String newMdcKey, List<String> paths) {
- if (StringUtils.isBlank(oldMdcKey)) {
- throw new IllegalArgumentException("current mdcKey must be provided");
- }
-
- if (StringUtils.isBlank(newMdcKey)) {
- throw new IllegalArgumentException("new mdcKey must be provided");
- }
-
- if (oldMdcKey.equals(newMdcKey)) {
- throw new IllegalArgumentException("the old and new mdcKey are equivalent");
- }
- if (nullOrEmpty(paths)) {
- throw new IllegalArgumentException(JSON_PATH_ERROR);
- }
-
- if (rules.containsKey(newMdcKey)) {
- throw new IllegalArgumentException("a filter rule already exists for key: " + newMdcKey);
- }
-
- FilterRule rule = rules.remove(oldMdcKey);
- if (rule == null) {
- throw new IllegalArgumentException("a filter rule doesn't exist for key: " + oldMdcKey);
- }
-
- rule.setMdcKey(newMdcKey);
- rule.setPaths(paths);
- rules.put(newMdcKey, rule);
- return rule;
- }
-
- /**
- * Deletes all filter rules for the topic filter.
- */
- protected void deleteFilterRule() {
- rules.clear();
- }
-
- /**
- * Deletes an existing filter rule.
- *
- * @param mdcKey the key to the filter rule
- * @return the filter rule that was deleted
- */
- protected FilterRule deleteFilterRule(String mdcKey) {
- if (StringUtils.isBlank(mdcKey)) {
- throw new IllegalArgumentException(MDC_KEY_ERROR);
- }
- return rules.remove(mdcKey);
- }
-
- /**
- * Finds all fields for each topic filter rule. The results are stored in a map that
- * is indexed by the MDC key. Each MDC key has a list of results as multiple
- * occurrences of a key can be found in a JSON document.
- *
- * @param json the json string to be parsed
- * @return a map of mdc keys and list of results for each key
- */
- protected Map<String, List<String>> find(String json) {
- Map<String, List<String>> results = new HashMap<>();
- for (FilterRule rule : rules.values()) {
- List<String> matches = new ArrayList<>();
- for (String path : rule.getPaths()) {
-
- try {
- matches = JsonProtocolFilter.filter(json, path);
- } catch (Exception e) {
- logger.debug("Could not filter on path {} because of {}", path, e.getMessage(), e);
- }
-
- if (!matches.isEmpty()) {
- break;
- } else {
- logger.error("Could not find path {} in json {}", path, json);
- }
-
- }
- results.put(rule.getMdcKey(), matches);
- }
- return results;
- }
-
- /**
- * Finds all occurrences of a field in a JSON document based on the filter rule paths.
- *
- * @param json the json string to be parsed
- * @return a list of matches from the JSON document
- */
- protected List<String> find(String json, String mdcKey) {
- List<String> matches = new ArrayList<>();
- for (String path : rules.get(mdcKey).getPaths()) {
-
- try {
- matches = JsonProtocolFilter.filter(json, path);
- } catch (Exception e) {
- logger.debug("Could not filter on path {} because of {}", path, e.getMessage(), e);
- }
-
- if (!matches.isEmpty()) {
- break;
- }
-
- }
-
- if (matches.isEmpty()) {
- logger.error("Could not find any matches for key {} in json {}", mdcKey, json);
- }
-
- return matches;
- }
-}