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Change-Id: Idddb494b6593de2188b5c837f3caa46c0e956573
diff --git a/src/main/java/org/opencord/sadis/SadisConfig.java b/src/main/java/org/opencord/sadis/SadisConfig.java
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+/*
+ * Copyright 2017-present Open Networking Laboratory
+ *
+ * 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.
+ */
+package org.opencord.sadis;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.onlab.packet.VlanId;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.config.Config;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.ObjectCodec;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+
+/**
+ * Configuration options for the Subscriber And Device Information Service.
+ *
+ * <pre>
+ * "sadis" : {
+ * "integration" : {
+ * "url" : "http://{hostname}{:port}",
+ * "cache" : {
+ * "enable" : true or false,
+ * "maxsize" : number of entries,
+ * "entryttl" : duration, i.e. 10s or 1m
+ * }
+ * },
+ * "entries" : [
+ * {
+ * "id" : "uniqueid",
+ * "ctag" : int,
+ * "stag" : int,
+ * "nasportid" : string,
+ * "port" : int,
+ * "slot" : int,
+ * "hardwareidentifier" : string
+ * }, ...
+ * ]
+ * }
+ * </pre>
+ */
+public class SadisConfig extends Config<ApplicationId> {
+
+ private final Logger log = LoggerFactory.getLogger(this.getClass());
+
+ private static final String SADIS_INTEGRATION = "integration";
+ private static final String SADIS_CACHE = "cache";
+ private static final String SADIS_CACHE_ENABLED = "enabled";
+ private static final String SADIS_CACHE_SIZE = "maxsize";
+ private static final String SADIS_CACHE_TTL = "ttl";
+ private static final String SADIS_URL = "url";
+ private static final String SADIS_ENTRIES = "entries";
+ private static final String DEFAULT_CACHE_TTL = "PT0S";
+
+ /**
+ * Returns SADIS integration URL.
+ *
+ * @return configured URL or null
+ * @throws MalformedURLException
+ * specified URL not valid
+ */
+ public URL getUrl() throws MalformedURLException {
+ final JsonNode integration = this.object.path(SADIS_INTEGRATION);
+ if (integration.isMissingNode()) {
+ return null;
+ }
+
+ final JsonNode url = integration.path(SADIS_URL);
+ if (url.isMissingNode()) {
+ return null;
+ }
+
+ return new URL(url.asText());
+ }
+
+ /**
+ * Returns configuration if cache should be used or not. Only used if
+ * integration URL is set.
+ *
+ * @return if cache should be used
+ */
+ public Boolean getCacheEnabled() {
+ final JsonNode integration = this.object.path(SADIS_INTEGRATION);
+ if (integration.isMissingNode()) {
+ return false;
+ }
+
+ final JsonNode cache = integration.path(SADIS_CACHE);
+ if (cache.isMissingNode()) {
+ return false;
+ }
+
+ return cache.path(SADIS_CACHE_ENABLED).asBoolean(false);
+ }
+
+ public int getCacheMaxSize() {
+ final JsonNode integration = this.object.path(SADIS_INTEGRATION);
+ if (integration.isMissingNode()) {
+ return -1;
+ }
+
+ final JsonNode cache = integration.path(SADIS_CACHE);
+ if (cache.isMissingNode()) {
+ return -1;
+ }
+
+ return cache.path(SADIS_CACHE_SIZE).asInt(-1);
+ }
+
+ public Duration getCacheTtl() {
+ final JsonNode integration = this.object.path(SADIS_INTEGRATION);
+ if (integration.isMissingNode()) {
+ return Duration.parse(DEFAULT_CACHE_TTL);
+ }
+
+ final JsonNode cache = integration.path(SADIS_CACHE);
+ if (cache.isMissingNode()) {
+ return Duration.parse(DEFAULT_CACHE_TTL);
+ }
+
+ return Duration.parse(cache.path(SADIS_CACHE_TTL).asText(DEFAULT_CACHE_TTL));
+ }
+
+ public List<SubscriberAndDeviceInformation> getEntries() {
+ List<SubscriberAndDeviceInformation> result = new ArrayList<SubscriberAndDeviceInformation>();
+ ObjectMapper mapper = new ObjectMapper();
+ SimpleModule module = new SimpleModule();
+ module.addDeserializer(VlanId.class, new VlanIdDeserializer());
+ mapper.registerModule(module);
+ final JsonNode entries = this.object.path(SADIS_ENTRIES);
+ entries.forEach(entry -> {
+ try {
+ result.add(mapper.readValue(entry.toString(), SubscriberAndDeviceInformation.class));
+ } catch (IOException e) {
+ log.warn("Unable to parse configuration entry, '{}', error: {}", entry.toString(), e.getMessage());
+ }
+ });
+
+ return result;
+ }
+
+ public class VlanIdDeserializer extends JsonDeserializer<VlanId> {
+ @Override
+ public VlanId deserialize(JsonParser jp, DeserializationContext ctxt)
+ throws IOException, JsonProcessingException {
+ ObjectCodec oc = jp.getCodec();
+ JsonNode node = oc.readTree(jp);
+ return VlanId.vlanId((short) node.asInt());
+ }
+ }
+}