From 8506f0b261083e945488e869803bcd5ab8b7ea84 Mon Sep 17 00:00:00 2001 From: "Smokowski, Kevin (ks6305)" Date: Wed, 13 Mar 2019 21:02:14 +0000 Subject: 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) --- message-router/publisher/provider/pom.xml | 39 ++++++ .../publisher/provider/impl/PublisherApiImpl.java | 149 +++++++++++++++++++++ .../resources/OSGI-INF/blueprint/blueprint.xml | 14 ++ 3 files changed, 202 insertions(+) create mode 100755 message-router/publisher/provider/pom.xml create mode 100755 message-router/publisher/provider/src/main/java/org/onap/ccsdk/messagerouter/publisher/provider/impl/PublisherApiImpl.java create mode 100755 message-router/publisher/provider/src/main/resources/OSGI-INF/blueprint/blueprint.xml (limited to 'message-router/publisher/provider') diff --git a/message-router/publisher/provider/pom.xml b/message-router/publisher/provider/pom.xml new file mode 100755 index 00000000..ca51aea4 --- /dev/null +++ b/message-router/publisher/provider/pom.xml @@ -0,0 +1,39 @@ + + + 4.0.0 + + + org.onap.ccsdk.messagerouter + publisher.aggregate + 0.4.1-SNAPSHOT + + + publisher.provider + bundle + + + + org.onap.ccsdk.messagerouter + publisher.api + ${project.version} + + + org.slf4j + slf4j-api + + + + + + + org.apache.felix + maven-bundle-plugin + + + org.onap.ccsdk.messagerouter.publisher.provider.impl + + + + + + 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 @@ + + + + + + + + + + \ No newline at end of file -- cgit 1.2.3-korg