Delete and move ES aliases

src/main/java/org/genesys2/server/service/ElasticService.java

@@ -58,4 +58,14 @@ public interface ElasticService {
 	 */
 	void regenerateIndexes();
 
+	/**
+	 * Move alias to a different index
+	 * 
+	 * @param aliasName
+	 * @param indexName
+	 */
+	void realias(String aliasName, String indexName);
+
+	void deleteAlias(String aliasName);
+
 }

src/main/java/org/genesys2/server/service/impl/ElasticsearchSearchServiceImpl.java

@@ -490,11 +490,23 @@ public class ElasticsearchSearchServiceImpl implements ElasticService, Initializ
 	 * @param indexName
 	 *            The index the alias points to
 	 */
-	private void realias(String aliasName, String indexName) {
+	@Override
+	public void realias(String aliasName, String indexName) {
 
 		if (LOG.isDebugEnabled())
 			LOG.debug("Loading alias definition for " + aliasName);
 
+		deleteAlias(aliasName);
+
+		AliasQuery query = new AliasQuery();
+		query.setAliasName(aliasName);
+		query.setIndexName(indexName);
+		LOG.info("Adding alias " + aliasName + " to index " + indexName);
+		elasticsearchTemplate.addAlias(query);
+	}
+
+	@Override
+	public void deleteAlias(String aliasName) {
 		ImmutableOpenMap<String, AliasMetaData> x = client.admin().cluster().prepareState().execute().actionGet().getState().getMetaData().getAliases()
 				.get(aliasName);
 
@@ -511,12 +523,6 @@ public class ElasticsearchSearchServiceImpl implements ElasticService, Initializ
 				elasticsearchTemplate.removeAlias(query);
 			}
 		}
-
-		AliasQuery query = new AliasQuery();
-		query.setAliasName(aliasName);
-		query.setIndexName(indexName);
-		LOG.info("Adding alias " + aliasName + " to index " + indexName);
-		elasticsearchTemplate.addAlias(query);
 	}
 
 	private void createIndex(String indexName, Map<?, ?> indexMapping, Map<?, ?> settings) {

src/main/java/org/genesys2/server/servlet/controller/admin/ElasticSearchController.java

@@ -16,7 +16,12 @@
 
 package org.genesys2.server.servlet.controller.admin;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.elasticsearch.client.Client;
@@ -35,11 +40,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RequestParam;
 
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import com.fasterxml.jackson.databind.ObjectMapper;
 
 @Controller
 @RequestMapping("/admin/elastic")
@@ -66,10 +67,8 @@ public class ElasticSearchController {
 	 */
 	@RequestMapping("/")
 	public String viewIndexesAndAliases(Model model) {
-		ImmutableOpenMap<String, IndexMetaData> indicesImmutableMap = client.admin().cluster()
-				.prepareState().execute()
-				.actionGet().getState()
-				.getMetaData().getIndices();
+		ImmutableOpenMap<String, IndexMetaData> indicesImmutableMap = client.admin().cluster().prepareState().execute().actionGet().getState().getMetaData()
+				.getIndices();
 
 		Map<String, List<AliasMetaData>> indexMap = new HashMap<>();
 		for (ObjectObjectCursor<String, IndexMetaData> cursor : indicesImmutableMap) {
@@ -121,4 +120,16 @@ public class ElasticSearchController {
 		elasticUpdater.clearQueues();
 		return "redirect:/admin/elastic/";
 	}
+
+	@RequestMapping(method = RequestMethod.POST, value = "/action", params = { "action=realias" })
+	public String moveAlias(@RequestParam(name = "aliasName") String aliasName, @RequestParam(name = "indexName") String indexName) {
+		elasticService.realias(aliasName, indexName);
+		return "redirect:/admin/elastic/";
+	}
+
+	@RequestMapping(method = RequestMethod.POST, value = "/action", params = { "action=delete-alias" })
+	public String deleteAlias(@RequestParam(name = "aliasName") String aliasName) {
+		elasticService.deleteAlias(aliasName);
+		return "redirect:/admin/elastic/";
+	}
 }

src/main/webapp/WEB-INF/jsp/admin/elastic/index.jsp

@@ -20,6 +20,13 @@
 			<input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" />
 			<button type="submit" class="btn btn-default" name="clear-queues">Clear ES update queues</button>
 		</form>
+		<form method="post" action="<c:url value="/admin/elastic/action" />">
+			<input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" />
+			Alias:<input type="text" name="aliasName" />
+			Index:<input type="text" name="indexName" />
+			<button type="submit" class="btn btn-primary" value="realias" name="action">Move alias</button>
+			<button type="submit" class="btn btn-default" value="delete-alias" name="action">Delete alias</button>
+		</form>
 
 	<h3>Indexes and their aliases</h3>
     <c:if test="${empty indexes}">