diff options
Diffstat (limited to 'src/main/java/com/att/dmf/mr/metrics/publisher/impl/DMaaPCambriaConsumerImpl.java')
-rw-r--r-- | src/main/java/com/att/dmf/mr/metrics/publisher/impl/DMaaPCambriaConsumerImpl.java | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/main/java/com/att/dmf/mr/metrics/publisher/impl/DMaaPCambriaConsumerImpl.java b/src/main/java/com/att/dmf/mr/metrics/publisher/impl/DMaaPCambriaConsumerImpl.java new file mode 100644 index 0000000..ee56213 --- /dev/null +++ b/src/main/java/com/att/dmf/mr/metrics/publisher/impl/DMaaPCambriaConsumerImpl.java @@ -0,0 +1,169 @@ +/******************************************************************************* + * ============LICENSE_START======================================================= + * org.onap.dmaap + * ================================================================================ + * Copyright © 2017 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========================================================= + * + * ECOMP is a trademark and service mark of AT&T Intellectual Property. + * + *******************************************************************************/ +package com.att.dmf.mr.metrics.publisher.impl; + +import java.io.IOException; +import java.io.UnsupportedEncodingException; +import java.net.MalformedURLException; +import java.net.URLEncoder; +import java.util.Collection; +import java.util.LinkedList; +import java.util.List; + +import org.json.JSONArray; +import org.json.JSONException; +import org.json.JSONObject; + +import com.att.dmf.mr.metrics.publisher.CambriaPublisherUtility; +import com.att.nsa.apiClient.http.HttpException; +import com.att.nsa.apiClient.http.HttpObjectNotFoundException; + +import jline.internal.Log; + +/** + * + * @author anowarul.islam + * + */ +public class DMaaPCambriaConsumerImpl extends CambriaBaseClient + implements com.att.dmf.mr.metrics.publisher.CambriaConsumer { + private final String fTopic; + private final String fGroup; + private final String fId; + private final int fTimeoutMs; + private final int fLimit; + private final String fFilter; + + /** + * + * @param hostPart + * @param topic + * @param consumerGroup + * @param consumerId + * @param timeoutMs + * @param limit + * @param filter + * @param apiKey + * @param apiSecret + */ + public DMaaPCambriaConsumerImpl(Collection<String> hostPart, final String topic, final String consumerGroup, + final String consumerId, int timeoutMs, int limit, String filter, String apiKey, String apiSecret) throws MalformedURLException { + super(hostPart, topic + "::" + consumerGroup + "::" + consumerId); + + fTopic = topic; + fGroup = consumerGroup; + fId = consumerId; + fTimeoutMs = timeoutMs; + fLimit = limit; + fFilter = filter; + + setApiCredentials(apiKey, apiSecret); + } + + /** + * method converts String to list + * + * @param str + * @return + */ + public static List<String> stringToList(String str) { + final LinkedList<String> set = new LinkedList<String>(); + if (str != null) { + final String[] parts = str.trim().split(","); + for (String part : parts) { + final String trimmed = part.trim(); + if (trimmed.length() > 0) { + set.add(trimmed); + } + } + } + return set; + } + + @Override + public Iterable<String> fetch() throws IOException { + // fetch with the timeout and limit set in constructor + return fetch(fTimeoutMs, fLimit); + } + + @Override + public Iterable<String> fetch(int timeoutMs, int limit) throws IOException { + final LinkedList<String> msgs = new LinkedList<String>(); + + final String urlPath = createUrlPath(timeoutMs, limit); + + getLog().info("UEB GET " + urlPath); + try { + final JSONObject o = get(urlPath); + + if (o != null) { + final JSONArray a = o.getJSONArray("result"); + if (a != null) { + for (int i = 0; i < a.length(); i++) { + msgs.add(a.getString(i)); + } + } + } + } catch (HttpObjectNotFoundException e) { + // this can happen if the topic is not yet created. ignore. + Log.error("Failed due to topic is not yet created" + e); + } catch (JSONException e) { + // unexpected response + reportProblemWithResponse(); + Log.error("Failed due to jsonException", e); + } catch (HttpException e) { + throw new IOException(e); + } + + return msgs; + } + + public String createUrlPath(int timeoutMs, int limit) { + final StringBuilder url = new StringBuilder(CambriaPublisherUtility.makeConsumerUrl(fTopic, fGroup, fId)); + final StringBuilder adds = new StringBuilder(); + if (timeoutMs > -1) { + adds.append("timeout=").append(timeoutMs); + } + + if (limit > -1) { + if (adds.length() > 0) { + adds.append("&"); + } + adds.append("limit=").append(limit); + } + if (fFilter != null && fFilter.length() > 0) { + try { + if (adds.length() > 0) { + adds.append("&"); + } + adds.append("filter=").append(URLEncoder.encode(fFilter, "UTF-8")); + } catch (UnsupportedEncodingException e) { + Log.error("Failed due to UnsupportedEncodingException" + e); + } + } + if (adds.length() > 0) { + url.append("?").append(adds.toString()); + } + return url.toString(); + } + +} |