package org.oransc.policyagent.configuration;
+import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+
+import javax.validation.constraints.NotNull;
+
+import org.immutables.gson.Gson;
+import org.immutables.value.Value;
import org.oransc.policyagent.exceptions.ServiceException;
+/**
+ * Parser for the Json representing of the component configuration.
+ */
public class ApplicationConfigParser {
private static final String CONFIG = "config";
+ private static final String CONTROLLER = "controller";
+
+ @Value.Immutable
+ @Gson.TypeAdapters
+ public interface ConfigParserResult {
+ List<RicConfig> ricConfigs();
+
+ Map<String, ControllerConfig> controllerConfigs();
+
+ String dmaapConsumerTopicUrl();
+
+ String dmaapProducerTopicUrl();
+
+ }
+
+ public ConfigParserResult parse(JsonObject root) throws ServiceException {
+
+ String dmaapProducerTopicUrl = "";
+ String dmaapConsumerTopicUrl = "";
+
+ JsonObject agentConfigJson = root.getAsJsonObject(CONFIG);
+
+ if (agentConfigJson == null) {
+ throw new ServiceException("Missing root configuration \"" + CONFIG + "\" in JSON: " + root);
+ }
+
+ JsonObject json = agentConfigJson.getAsJsonObject("streams_publishes");
+ if (json != null) {
+ dmaapProducerTopicUrl = parseDmaapConfig(json);
+ }
+
+ json = agentConfigJson.getAsJsonObject("streams_subscribes");
+ if (json != null) {
+ dmaapConsumerTopicUrl = parseDmaapConfig(json);
+ }
- public ApplicationConfigParser() {
+ List<RicConfig> ricConfigs = parseRics(agentConfigJson);
+ Map<String, ControllerConfig> controllerConfigs = parseControllerConfigs(agentConfigJson);
+ checkConfigurationConsistency(ricConfigs, controllerConfigs);
+
+ return ImmutableConfigParserResult.builder() //
+ .dmaapConsumerTopicUrl(dmaapConsumerTopicUrl) //
+ .dmaapProducerTopicUrl(dmaapProducerTopicUrl) //
+ .ricConfigs(ricConfigs) //
+ .controllerConfigs(controllerConfigs) //
+ .build();
+ }
+
+ private void checkConfigurationConsistency(List<RicConfig> ricConfigs,
+ Map<String, ControllerConfig> controllerConfigs) throws ServiceException {
+ Set<String> ricUrls = new HashSet<>();
+ Set<String> ricNames = new HashSet<>();
+ for (RicConfig ric : ricConfigs) {
+ if (!ricUrls.add(ric.baseUrl())) {
+ throw new ServiceException("Configuration error, more than one RIC URL: " + ric.baseUrl());
+ }
+ if (!ricNames.add(ric.name())) {
+ throw new ServiceException("Configuration error, more than one RIC with name: " + ric.name());
+ }
+ if (!ric.controllerName().isEmpty() && controllerConfigs.get(ric.controllerName()) == null) {
+ throw new ServiceException(
+ "Configuration error, controller configuration not found: " + ric.controllerName());
+ }
+
+ }
+ }
+
+ private List<RicConfig> parseRics(JsonObject config) throws ServiceException {
+ List<RicConfig> result = new ArrayList<>();
+ for (JsonElement ricElem : getAsJsonArray(config, "ric")) {
+ JsonObject ricAsJson = ricElem.getAsJsonObject();
+ JsonElement controllerNameElement = ricAsJson.get(CONTROLLER);
+ ImmutableRicConfig ricConfig = ImmutableRicConfig.builder() //
+ .name(get(ricAsJson, "name").getAsString()) //
+ .baseUrl(get(ricAsJson, "baseUrl").getAsString()) //
+ .managedElementIds(parseManagedElementIds(get(ricAsJson, "managedElementIds").getAsJsonArray())) //
+ .controllerName(controllerNameElement != null ? controllerNameElement.getAsString() : "") //
+ .build();
+ result.add(ricConfig);
+ }
+ return result;
+ }
+
+ Map<String, ControllerConfig> parseControllerConfigs(JsonObject config) throws ServiceException {
+ if (config.get(CONTROLLER) == null) {
+ return new HashMap<>();
+ }
+ Map<String, ControllerConfig> result = new HashMap<>();
+ for (JsonElement element : getAsJsonArray(config, CONTROLLER)) {
+ JsonObject controllerAsJson = element.getAsJsonObject();
+ ImmutableControllerConfig controllerConfig = ImmutableControllerConfig.builder() //
+ .name(get(controllerAsJson, "name").getAsString()) //
+ .baseUrl(get(controllerAsJson, "baseUrl").getAsString()) //
+ .password(get(controllerAsJson, "password").getAsString()) //
+ .userName(get(controllerAsJson, "userName").getAsString()) // )
+ .build();
+
+ if (result.put(controllerConfig.name(), controllerConfig) != null) {
+ throw new ServiceException(
+ "Configuration error, more than one controller with name: " + controllerConfig.name());
+ }
+ }
+ return result;
}
- String example;
+ private List<String> parseManagedElementIds(JsonArray asJsonObject) {
+ Iterator<JsonElement> iterator = asJsonObject.iterator();
+ List<String> managedElementIds = new ArrayList<>();
+ while (iterator.hasNext()) {
+ managedElementIds.add(iterator.next().getAsString());
- public void parse(JsonObject root) throws ServiceException {
- JsonObject config = root.getAsJsonObject(CONFIG);
- example = getAsString(config, "exampleProperty");
+ }
+ return managedElementIds;
}
private static JsonElement get(JsonObject obj, String memberName) throws ServiceException {
JsonElement elem = obj.get(memberName);
if (elem == null) {
- throw new ServiceException("Could not find member: " + memberName + " in: " + obj);
+ throw new ServiceException("Could not find member: '" + memberName + "' in: " + obj);
}
return elem;
}
- private static String getAsString(JsonObject obj, String memberName) throws ServiceException {
- return get(obj, memberName).getAsString();
+ private JsonArray getAsJsonArray(JsonObject obj, String memberName) throws ServiceException {
+ return get(obj, memberName).getAsJsonArray();
}
- private static JsonObject getAsJson(JsonObject obj, String memberName) throws ServiceException {
- return get(obj, memberName).getAsJsonObject();
+ private String parseDmaapConfig(JsonObject streamCfg) throws ServiceException {
+ Set<Entry<String, JsonElement>> streamConfigEntries = streamCfg.entrySet();
+ if (streamConfigEntries.size() != 1) {
+ throw new ServiceException(
+ "Invalid configuration. Number of streams must be one, config: " + streamConfigEntries);
+ }
+ JsonObject streamConfigEntry = streamConfigEntries.iterator().next().getValue().getAsJsonObject();
+ JsonObject dmaapInfo = get(streamConfigEntry, "dmaap_info").getAsJsonObject();
+ return getAsString(dmaapInfo, "topic_url");
}
+ private static @NotNull String getAsString(JsonObject obj, String memberName) throws ServiceException {
+ return get(obj, memberName).getAsString();
+ }
}
Code Review / nonrtric.git / blobdiff