1 files changed, 124 insertions, 0 deletions
diff --git a/rulemgt/src/main/java/org/onap/holmes/rulemgt/dcae/DcaeConfigurationPolling.java b/rulemgt/src/main/java/org/onap/holmes/rulemgt/dcae/DcaeConfigurationPolling.java
new file mode 100644
index 0000000..a69b6a4
--- /dev/null
+++ b/rulemgt/src/main/java/org/onap/holmes/rulemgt/dcae/DcaeConfigurationPolling.java
@@ -0,0 +1,124 @@
+/**
+ * Copyright 2017 ZTE Corporation.
+ *
+ * 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.
+ */
+package org.onap.holmes.rulemgt.dcae;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.util.List;
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MediaType;
+import lombok.extern.slf4j.Slf4j;
+import org.glassfish.jersey.client.ClientConfig;
+import org.onap.holmes.common.config.MicroServiceConfig;
+import org.onap.holmes.common.dcae.entity.DcaeConfigurations;
+import org.onap.holmes.common.dcae.entity.Rule;
+import org.onap.holmes.common.dcae.utils.DcaeConfigurationParser;
+import org.onap.holmes.common.exception.CorrelationException;
+import org.onap.holmes.rulemgt.bean.request.RuleCreateRequest;
+import org.onap.holmes.rulemgt.bean.response.RuleQueryListResponse;
+import org.onap.holmes.rulemgt.bean.response.RuleResult4API;
+
+@Slf4j
+public class DcaeConfigurationPolling implements Runnable {
+
+    public static long POLLING_PERIOD = 10 * 1000L;
+
+    private String hostname;
+
+    private String url = "http://127.0.0.1/api/holmes-rule-mgmt/v1/rule";
+
+    public DcaeConfigurationPolling(String hostname) {
+        this.hostname = hostname;
+    }
+
+    @Override
+    public void run() {
+        DcaeConfigurations dcaeConfigurations = null;
+        try {
+            dcaeConfigurations = getDcaeConfigurations();
+        } catch (CorrelationException e) {
+            log.error("Failed to polling dcae configurations" + e.getMessage());
+        }
+        if (dcaeConfigurations != null) {
+            RuleQueryListResponse ruleQueryListResponse = getAllCorrelationRules();
+            List<RuleResult4API> ruleResult4APIs = ruleQueryListResponse.getCorrelationRules();
+            deleteAllCorrelationRules(ruleResult4APIs);
+            try {
+                addAllCorrelationRules(dcaeConfigurations);
+            } catch (CorrelationException e) {
+                log.error("Failed to add rules" + e.getMessage());
+            }
+        }
+    }
+
+    private DcaeConfigurations getDcaeConfigurations() throws CorrelationException {
+        String serviceAddrInfo = MicroServiceConfig.getServiceAddrInfoFromCBS(hostname);
+        String response = getDcaeResponse(serviceAddrInfo);
+        DcaeConfigurations dcaeConfigurations = null;
+        dcaeConfigurations = DcaeConfigurationParser.parse(response);
+        return dcaeConfigurations;
+    }
+
+    private String getDcaeResponse(String serviceAddrInfo) {
+        Client client = ClientBuilder.newClient(new ClientConfig());
+        WebTarget webTarget = client.target(serviceAddrInfo);
+        return webTarget.request("application/json").get()
+                .readEntity(String.class);
+    }
+
+    private RuleQueryListResponse getAllCorrelationRules() {
+        Client client = ClientBuilder.newClient(new ClientConfig());
+        WebTarget webTarget = client.target(url);
+        return webTarget.request("application/json").get()
+                .readEntity(RuleQueryListResponse.class);
+    }
+
+    private void addAllCorrelationRules(DcaeConfigurations dcaeConfigurations) throws CorrelationException {
+        for (Rule rule : dcaeConfigurations.getDefaultRules()) {
+            RuleCreateRequest ruleCreateRequest = getRuleCreateRequest(rule);
+            Client client = ClientBuilder.newClient(new ClientConfig());
+            ObjectMapper mapper = new ObjectMapper();
+            String content = null;
+            try {
+                content = mapper.writeValueAsString(ruleCreateRequest);
+            } catch (JsonProcessingException e) {
+                throw new CorrelationException("Failed to convert the message object to a json string.", e);
+            }
+            WebTarget webTarget = client.target(url);
+            webTarget.request(MediaType.APPLICATION_JSON)
+                    .put(Entity.entity(content, MediaType.APPLICATION_JSON));
+        }
+    }
+
+    private void deleteAllCorrelationRules(List<RuleResult4API> ruleResult4APIs){
+        ruleResult4APIs.forEach(correlationRule ->{
+            Client client = ClientBuilder.newClient(new ClientConfig());
+            WebTarget webTarget = client.target(url + "/" + correlationRule.getRuleId());
+            webTarget.request(MediaType.APPLICATION_JSON).delete();
+        });
+    }
+
+    private RuleCreateRequest getRuleCreateRequest(Rule rule) {
+        RuleCreateRequest ruleCreateRequest = new RuleCreateRequest();
+        ruleCreateRequest.setLoopControlName(rule.getLoopControlName());
+        ruleCreateRequest.setRuleName(rule.getName());
+        ruleCreateRequest.setContent(rule.getContents());
+        ruleCreateRequest.setDescription("");
+        ruleCreateRequest.setEnabled(1);
+        return ruleCreateRequest;
+    }
+}