diff options
Diffstat (limited to 'dmaap-listener')
| -rw-r--r-- | dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/MessageRouterHttpClientJdk.java | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/MessageRouterHttpClientJdk.java b/dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/MessageRouterHttpClientJdk.java new file mode 100644 index 000000000..d720e5fcd --- /dev/null +++ b/dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/MessageRouterHttpClientJdk.java @@ -0,0 +1,211 @@ +/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * Copyright (C) 2017 - 2018 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.ccsdk.sli.northbound.dmaapclient;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+import java.util.Properties;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.net.HttpURLConnection;
+
+/*
+ * java.net based client to build message router consumers
+ */
+public class MessageRouterHttpClientJdk implements SdncDmaapConsumer {
+ private static final Logger Log = LoggerFactory.getLogger(MessageRouterHttpClientJdk.class);
+
+ protected Boolean isReady = false;
+ protected Boolean isRunning = false;
+ protected URL url;
+ protected Integer fetchPause;
+ protected Properties properties;
+ protected final String DEFAULT_CONNECT_TIMEOUT = "30000";
+ protected final String DEFAULT_READ_TIMEOUT = "180000";
+ protected final String DEFAULT_TIMEOUT_QUERY_PARAM_VALUE = "15000";
+ protected final String DEFAULT_LIMIT = null;
+ private String authorizationString;
+ protected Integer connectTimeout;
+ protected Integer readTimeout;
+ protected String topic;
+
+ public MessageRouterHttpClientJdk() {}
+
+ @Override
+ public void run() {
+ if (isReady) {
+ isRunning = true;
+ while (isRunning) {
+ HttpURLConnection httpUrlConnection = null;
+ try {
+ httpUrlConnection = (HttpURLConnection) url.openConnection();
+ if (authorizationString != null) {
+ httpUrlConnection.addRequestProperty("Authorization", authorizationString);
+ }
+ httpUrlConnection.setRequestMethod("GET");
+ httpUrlConnection.setRequestProperty("Accept", "application/json");
+ httpUrlConnection.setUseCaches(false);
+ httpUrlConnection.setConnectTimeout(connectTimeout);
+ httpUrlConnection.setReadTimeout(readTimeout);
+ httpUrlConnection.connect();
+ int status = httpUrlConnection.getResponseCode();
+ Log.info("GET " + url + " returned http status " + status);
+ if (status < 300) {
+ BufferedReader br =
+ new BufferedReader(new InputStreamReader(httpUrlConnection.getInputStream()));
+ StringBuilder sb = new StringBuilder();
+ String line;
+ while ((line = br.readLine()) != null) {
+ sb.append(line + "\n");
+ }
+ br.close();
+ String responseBody = sb.toString();
+ if (responseBody.contains("{")) {
+ // Get rid of opening [" entity =
+ responseBody = responseBody.substring(2);
+ // Get rid of closing "]
+ responseBody = responseBody.substring(0, responseBody.length() - 2);
+ // Split the json array into individual elements to process
+ for (String message : responseBody.split("\",\"")) {
+ // unescape the json
+ message = message.replace("\\\"", "\"");
+ // Topic names cannot contain periods
+ processMsg(message);
+ }
+ } else {
+ Log.info("Entity doesn't appear to contain JSON elements, logging body");
+ Log.info(responseBody);
+ }
+ }
+ } catch (Exception e) {
+ Log.error("GET " + url + " failed.", e);
+ } finally {
+ if (httpUrlConnection != null) {
+ httpUrlConnection.disconnect();
+ }
+ Log.info("Pausing " + fetchPause + " milliseconds before fetching from " + url + " again.");
+ try {
+ Thread.sleep(fetchPause);
+ } catch (InterruptedException e) {
+ Log.error("Could not sleep thread", e);
+ }
+ }
+ }
+ }
+ }
+
+ @Override
+ public void init(Properties baseProperties, String consumerPropertiesPath) {
+ try {
+ baseProperties.load(new FileInputStream(new File(consumerPropertiesPath)));
+
+ this.properties = baseProperties;
+ String username = properties.getProperty("username");
+ String password = properties.getProperty("password");
+ topic = properties.getProperty("topic");
+ String group = properties.getProperty("group");
+ String host = properties.getProperty("host");
+ String id = properties.getProperty("id");
+
+ String filter = properties.getProperty("filter");
+ if (filter != null) {
+ if (filter.length() > 0) {
+ try {
+ filter = URLEncoder.encode(filter, StandardCharsets.UTF_8.name());
+ } catch (UnsupportedEncodingException e) {
+ Log.error("Couldn't encode filter string", e);
+ }
+ } else {
+ filter = null;
+ }
+ }
+
+ String limitString = properties.getProperty("limit", DEFAULT_LIMIT);
+ Integer limit = null;
+ if (limitString != null && limitString.length() > 0) {
+ limit = Integer.valueOf(limitString);
+ }
+
+ Integer timeoutQueryParamValue =
+ Integer.valueOf(properties.getProperty("timeout", DEFAULT_TIMEOUT_QUERY_PARAM_VALUE));
+ connectTimeout = Integer.valueOf(properties.getProperty("connectTimeoutSeconds", DEFAULT_CONNECT_TIMEOUT));
+ readTimeout = Integer.valueOf(properties.getProperty("readTimeoutMinutes", DEFAULT_READ_TIMEOUT));
+ if (username != null && password != null && username.length() > 0 && password.length() > 0) {
+ authorizationString = buildAuthorizationString(username, password);
+ }
+ String urlString = buildlUrlString(topic, group, id, host, timeoutQueryParamValue, limit, filter);
+ this.url = new URL(urlString);
+ this.fetchPause = Integer.valueOf(properties.getProperty("fetchPause"));
+ this.isReady = true;
+ } catch (FileNotFoundException e) {
+ Log.error("FileNotFoundException while reading consumer properties", e);
+ } catch (IOException e) {
+ Log.error("IOException while reading consumer properties", e);
+ }
+ }
+
+ public void processMsg(String msg) {
+ Log.info(msg);
+ }
+
+ protected String buildAuthorizationString(String userName, String password) {
+ String basicAuthString = userName + ":" + password;
+ basicAuthString = Base64.getEncoder().encodeToString(basicAuthString.getBytes());
+ return "Basic " + basicAuthString;
+ }
+
+ protected String buildlUrlString(String topic, String consumerGroup, String consumerId, String host,
+ Integer timeout, Integer limit, String filter) {
+ StringBuilder sb = new StringBuilder();
+ sb.append("http://" + host + "/events/" + topic + "/" + consumerGroup + "/" + consumerId);
+ sb.append("?timeout=" + timeout);
+
+ if (limit != null) {
+ sb.append("&limit=" + limit);
+ }
+ if (filter != null) {
+ sb.append("&filter=" + filter);
+ }
+ return sb.toString();
+ }
+
+ @Override
+ public boolean isReady() {
+ return isReady;
+ }
+
+ @Override
+ public boolean isRunning() {
+ return isRunning;
+ }
+
+}
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