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authorLukasz Muszkieta <lukasz.muszkieta@nokia.com>2018-04-12 18:24:12 +0200
committerLukasz Muszkieta <lukasz.muszkieta@nokia.com>2018-04-16 10:19:26 +0200
commitb196509debdb43411abfcdc55b3ce87a0a30da6e (patch)
treef1bace792887294eaf8e861b5ea5011c08574610 /bpmn/MSOInfrastructureBPMN/src/main/java
parent4bce6adb7b0ae77e62f276d21ecd4683c9b6c8d9 (diff)
PnfReadyEventConsumer implementation
Change-Id: I7252400a3f60ca22ddfa71edb28eaf1d16ccd9b4 Issue-ID: SO-466 Signed-off-by: Lukasz Muszkieta <lukasz.muszkieta@nokia.com>
Diffstat (limited to 'bpmn/MSOInfrastructureBPMN/src/main/java')
-rw-r--r--bpmn/MSOInfrastructureBPMN/src/main/java/org/openecomp/mso/bpmn/infrastructure/pnf/dmaap/PnfEventReadyConsumer.java99
1 files changed, 88 insertions, 11 deletions
diff --git a/bpmn/MSOInfrastructureBPMN/src/main/java/org/openecomp/mso/bpmn/infrastructure/pnf/dmaap/PnfEventReadyConsumer.java b/bpmn/MSOInfrastructureBPMN/src/main/java/org/openecomp/mso/bpmn/infrastructure/pnf/dmaap/PnfEventReadyConsumer.java
index e6019f73f0..6871665ba1 100644
--- a/bpmn/MSOInfrastructureBPMN/src/main/java/org/openecomp/mso/bpmn/infrastructure/pnf/dmaap/PnfEventReadyConsumer.java
+++ b/bpmn/MSOInfrastructureBPMN/src/main/java/org/openecomp/mso/bpmn/infrastructure/pnf/dmaap/PnfEventReadyConsumer.java
@@ -22,17 +22,28 @@ package org.openecomp.mso.bpmn.infrastructure.pnf.dmaap;
import java.io.IOException;
import java.net.URI;
+import java.util.Map;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
import javax.ws.rs.core.UriBuilder;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.util.EntityUtils;
+import org.openecomp.mso.bpmn.infrastructure.pnf.implementation.DmaapClient;
+import org.openecomp.mso.jsonpath.JsonPathUtil;
+import org.openecomp.mso.logger.MsoLogger;
-public class PnfEventReadyConsumer {
+public class PnfEventReadyConsumer implements Runnable, DmaapClient {
+
+ private static final MsoLogger LOGGER = MsoLogger.getMsoLogger(MsoLogger.Catalog.RA);
private static final String JSON_PATH_CORRELATION_ID = "$.pnfRegistrationFields.correlationId";
private HttpClient httpClient;
-
private String dmaapHost;
private int dmaapPort;
private String dmaapProtocol;
@@ -40,24 +51,57 @@ public class PnfEventReadyConsumer {
private String dmaapTopicName;
private String consumerId;
private String consumerGroup;
+ private Map<String, Runnable> pnfCorrelationIdToThreadMap;
+ private HttpGet getRequest;
+ private ScheduledExecutorService executor;
+ private int dmaapClientInitialDelayInSeconds;
+ private int dmaapClientDelayInSeconds;
+ private boolean dmaapThreadListenerIsRunning;
public PnfEventReadyConsumer() {
httpClient = HttpClientBuilder.create().build();
+ pnfCorrelationIdToThreadMap = new ConcurrentHashMap<>();
+ executor = null;
+ }
+
+ public void init() {
+ getRequest = new HttpGet(buildURI());
+ }
+
+ @Override
+ public void run() {
+ try {
+ HttpResponse response = httpClient.execute(getRequest);
+ getCorrelationIdFromResponse(response).ifPresent(this::informAboutPnfReadyIfCorrelationIdFound);
+ } catch (IOException e) {
+ LOGGER.error("Exception caught during sending rest request to dmaap for listening event topic", e);
+ }
+ }
+
+ @Override
+ public void registerForUpdate(String correlationId, Runnable informConsumer) {
+ pnfCorrelationIdToThreadMap.put(correlationId, informConsumer);
+ if (!dmaapThreadListenerIsRunning) {
+ startDmaapThreadListener();
+ }
}
- public void notifyWhenPnfReady(String correlationId)
- throws IOException {
- HttpGet getRequest = new HttpGet(buildURI(consumerGroup, consumerId));
- HttpResponse response = httpClient.execute(getRequest);
- checkIfResponseIsAccepted(response, correlationId);
+ private void startDmaapThreadListener() {
+ executor = Executors.newScheduledThreadPool(1);
+ executor.scheduleWithFixedDelay(this, dmaapClientInitialDelayInSeconds,
+ dmaapClientDelayInSeconds, TimeUnit.SECONDS);
+ dmaapThreadListenerIsRunning = true;
}
- private boolean checkIfResponseIsAccepted(HttpResponse response, String correlationId) {
- // TODO parse response if contains proper correlationId
- return false;
+ private void stopDmaapThreadListener() {
+ if (dmaapThreadListenerIsRunning) {
+ executor.shutdownNow();
+ dmaapThreadListenerIsRunning = false;
+ executor = null;
+ }
}
- private URI buildURI(String consumerGroup, String consumerId) {
+ private URI buildURI() {
return UriBuilder.fromUri(dmaapUriPathPrefix)
.scheme(dmaapProtocol)
.host(dmaapHost)
@@ -65,6 +109,31 @@ public class PnfEventReadyConsumer {
.path(consumerGroup).path(consumerId).build();
}
+ private Optional<String> getCorrelationIdFromResponse(HttpResponse response) throws IOException {
+ if (response.getStatusLine().getStatusCode() == 200) {
+ String responseString = EntityUtils.toString(response.getEntity(), "UTF-8");
+ if (responseString != null) {
+ return JsonPathUtil.getInstance().locateResult(responseString, JSON_PATH_CORRELATION_ID);
+ }
+ }
+ return Optional.empty();
+ }
+
+
+ private void informAboutPnfReadyIfCorrelationIdFound(String correlationId) {
+ pnfCorrelationIdToThreadMap.keySet().stream().filter(key -> key.equals(correlationId)).findAny()
+ .ifPresent(this::informAboutPnfReady);
+ }
+
+ private void informAboutPnfReady(String correlationId) {
+ pnfCorrelationIdToThreadMap.get(correlationId).run();
+ pnfCorrelationIdToThreadMap.remove(correlationId);
+
+ if (pnfCorrelationIdToThreadMap.isEmpty()) {
+ stopDmaapThreadListener();
+ }
+ }
+
public void setDmaapHost(String dmaapHost) {
this.dmaapHost = dmaapHost;
}
@@ -93,4 +162,12 @@ public class PnfEventReadyConsumer {
this.consumerGroup = consumerGroup;
}
+ public void setDmaapClientInitialDelayInSeconds(int dmaapClientInitialDelayInSeconds) {
+ this.dmaapClientInitialDelayInSeconds = dmaapClientInitialDelayInSeconds;
+ }
+
+ public void setDmaapClientDelayInSeconds(int dmaapClientDelayInSeconds) {
+ this.dmaapClientDelayInSeconds = dmaapClientDelayInSeconds;
+ }
+
}