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authorSmokowski, Kevin (ks6305) <kevin.smokowski@att.com>2019-03-13 21:02:14 +0000
committerDan Timoney <dtimoney@att.com>2019-03-18 18:30:18 +0000
commit8506f0b261083e945488e869803bcd5ab8b7ea84 (patch)
treefa0937b2fdf31b2d334affd1eb2838d2bddf2842 /message-router/publisher/provider/src
parent20e9eda25ee9aebbcd5fda7497a0baccb64348af (diff)
add message router publisher
initial api and implementation of message router publisher Change-Id: Ic69d013bae8ab8c842e6ecd2eef41e10649d1009 Issue-ID: CCSDK-1163 Signed-off-by: Smokowski, Kevin (ks6305) <kevin.smokowski@att.com>
Diffstat (limited to 'message-router/publisher/provider/src')
-rwxr-xr-xmessage-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java149
-rwxr-xr-xmessage-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml14
2 files changed, 163 insertions, 0 deletions
diff --git a/message-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java b/message-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java
new file mode 100755
index 00000000..3e8ab333
--- /dev/null
+++ b/message-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java
@@ -0,0 +1,149 @@
+package org.onap.ccsdk.messagerouter.publisher.provider.impl;
+
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.SocketException;
+import java.net.URL;
+import java.util.Base64;
+
+import org.onap.ccsdk.messagerouter.publisher.api.PublisherApi;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class PublisherApiImpl implements PublisherApi {
+ private static final Logger logger = LoggerFactory.getLogger(PublisherApiImpl.class);
+ protected final Integer DEFAULT_CONNECT_TIMEOUT = 30000; // will be treated as 30 seconds
+ protected final Integer DEFAULT_READ_TIMEOUT = 180000; // will be treated as 3 minutes
+ private String authorizationString;
+ protected Integer connectTimeout;
+ protected Integer readTimeout;
+ protected String baseUrl;
+ protected String username;
+ protected String[] hosts;
+ private String password;
+
+ public void setUsername(String username) {
+ this.username = username;
+ buildAuthorizationString();
+ }
+
+ public void setPassword(String password) {
+ this.password = password;
+ buildAuthorizationString();
+ }
+
+ public void setHost(String hostString) {
+ // a comma separated list of hosts can be passed in or a single host may be used
+ if (!hostString.contains(",")) {
+ this.hosts = new String[] { hostString };
+ } else {
+ this.hosts = hostString.split(",");
+ }
+ }
+
+ public PublisherApiImpl() {
+ connectTimeout = DEFAULT_CONNECT_TIMEOUT;
+ readTimeout = DEFAULT_READ_TIMEOUT;
+ }
+
+ public void init() {
+ buildAuthorizationString();
+ }
+
+ private String buildUrlString(Integer hostIndex, String topic) {
+ return hosts[hostIndex] + "/events/" + topic;
+ }
+
+ protected void configureHttpURLConnection(HttpURLConnection httpUrlConnection) {
+ httpUrlConnection.setRequestProperty("Content-Type", "application/json");
+ }
+
+ public Boolean publish(String topic, String body) {
+ for (int hostIndex = 0; hostIndex < hosts.length; hostIndex++) {
+ HttpURLConnection httpUrlConnection = null;
+ URL url = null;
+ try {
+ url = new URL(buildUrlString(hostIndex, topic));
+ logger.info("Publishing body to topic {} using the url {}", topic, url);
+ logger.info("Message to publish is\n{}", body);
+ httpUrlConnection = buildHttpURLConnection(url);
+ httpUrlConnection.setDoInput(true);
+ httpUrlConnection.setDoOutput(true);
+ httpUrlConnection.setUseCaches(false);
+ httpUrlConnection.setRequestMethod("POST");
+
+ // Write message
+ httpUrlConnection.setRequestProperty("Content-Length", Integer.toString(body.length()));
+ DataOutputStream outStr = new DataOutputStream(httpUrlConnection.getOutputStream());
+ outStr.write(body.getBytes());
+ outStr.close();
+
+ int status = httpUrlConnection.getResponseCode();
+ logger.info("Publishing body for topic {} using url {} returned status {}.", topic, url, status);
+ if (status < 300) {
+ String responseFromDMaaP = readFromStream(httpUrlConnection.getInputStream());
+ logger.info("Message router response is\n{}", responseFromDMaaP);
+ return true;
+ } else {
+ if (httpUrlConnection.getErrorStream() != null) {
+ String responseFromDMaaP = readFromStream(httpUrlConnection.getErrorStream());
+ logger.warn("Publishing body for topic {} using url {} failed." + " Error message is\n{}",
+ topic, url, responseFromDMaaP);
+ }
+ return false;
+ }
+
+ } catch (SocketException socketException) {
+ logger.error("SocketException was thrown during publishing message to DMaaP on url {}.", url,
+ socketException);
+ if (hostIndex < hosts.length) {
+ logger.info("Message sent to {} failed with a SocketException, but will be tried on {}",
+ hosts[hostIndex], hosts[hostIndex + 1]);
+ }
+ } catch (Exception e) {
+ logger.warn("Exception was thrown during publishing message to DMaaP on url {}.", url, e);
+ return false;
+ } finally {
+ if (httpUrlConnection != null) {
+ httpUrlConnection.disconnect();
+ }
+ }
+ }
+ return false;
+ }
+
+ private void buildAuthorizationString() {
+ String basicAuthString = username + ":" + password;
+ basicAuthString = Base64.getEncoder().encodeToString(basicAuthString.getBytes());
+ this.authorizationString = "Basic " + basicAuthString;
+ }
+
+ protected HttpURLConnection buildHttpURLConnection(URL url) throws IOException {
+ HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection();
+ if (authorizationString != null) {
+ httpUrlConnection.setRequestProperty("Authorization", authorizationString);
+ }
+ httpUrlConnection.setRequestProperty("Accept", "application/json");
+ httpUrlConnection.setUseCaches(false);
+ httpUrlConnection.setConnectTimeout(connectTimeout);
+ httpUrlConnection.setReadTimeout(readTimeout);
+ configureHttpURLConnection(httpUrlConnection);
+ return httpUrlConnection;
+ }
+
+ protected String readFromStream(InputStream stream) throws IOException {
+ BufferedReader br = new BufferedReader(new InputStreamReader(stream));
+ StringBuilder sb = new StringBuilder();
+ String line;
+ while ((line = br.readLine()) != null) {
+ sb.append(line);
+ }
+ br.close();
+ return sb.toString();
+ }
+
+} \ No newline at end of file
diff --git a/message-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml b/message-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml
new file mode 100755
index 00000000..da25fd23
--- /dev/null
+++ b/message-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
+ xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.2.0">
+
+ <bean id="publisher"
+ class="org.onap.ccsdk.messagerouter.publisher.provider.impl.PublisherApiImpl">
+ <cm:managed-properties
+ persistent-id="org.onap.ccsdk.messagerouter.publisher.provider"
+ update-strategy="container-managed" />
+ </bean>
+
+ <service ref="publisher" interface="org.onap.ccsdk.messagerouter.publisher.api.PublisherApi" />
+
+</blueprint> \ No newline at end of file