src/main/java/ru/ulstu/extractor/http/HttpService.java

@@ -41,6 +41,26 @@ public class HttpService {
         return response;
     }
 
+    public JSONArray post(String url, JSONArray postData) {
+        log.debug("Service call: {}", url);
+        JSONArray response = null;
+        try {
+            response = new JSONArray(Optional.ofNullable(client
+                    .post()
+                    .uri(url)
+                    .contentType(MediaType.APPLICATION_JSON)
+                    .body(BodyInserters.fromValue(postData.toString()))
+                    .accept(MediaType.APPLICATION_JSON)
+                    .retrieve()
+                    .bodyToMono(String.class)
+                    .toFuture().get()).orElse("[{response:\"empty\"}]"));
+        } catch (Exception e) {
+            return new JSONArray("[{response:\"empty\"}]");
+        }
+        log.debug("Service response: {}", response);
+        return response;
+    }
+
     public JSONArray get(String url) {
         log.debug("Service call: {}", url);
         try {

src/main/java/ru/ulstu/extractor/ts/controller/TimeSeriesMarkupController.java

@@ -22,7 +22,7 @@ public class TimeSeriesMarkupController {
     public String markupTs(Model model) {
         List<TimeSeries> ts = timeSeriesService.getAllTimeSeries();
         model.addAttribute("ts", ts);
-        model.addAttribute("fts", timeSeriesService.getGroupedTendencies(ts.get(0)));
+        model.addAttribute("groupedTs", timeSeriesService.getGroupedTendencies(ts));
         return "markup";
     }
 }

src/main/java/ru/ulstu/extractor/ts/service/TimeSeriesService.java

@@ -20,12 +20,14 @@ import ru.ulstu.extractor.ts.model.TimeSeriesValue;
 import ru.ulstu.extractor.ts.repository.TimeSeriesRepository;
 import ru.ulstu.extractor.ts.repository.TimeSeriesValueRepository;
 import ru.ulstu.extractor.ts.util.TimeSeriesDateMapper;
+import ru.ulstu.extractor.util.JsonUtils;
 
 import javax.transaction.Transactional;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 @Service
 public class TimeSeriesService {
@@ -138,15 +140,12 @@ public class TimeSeriesService {
         return Optional.empty();
     }
 
-    public Optional<TimeSeries> getGroupedTendencies(TimeSeries ts) {
-        if (ts != null && ts.getValues().size() > 5) {
-            JSONObject response = httpService.post(TIME_SERIES_GROUPED_TENDENCIES_URL, new JSONObject(new JsonTimeSeries(ts)));
+    public List<TimeSeries> getGroupedTendencies(List<TimeSeries> tsList) {
+        JSONArray response = httpService.post(TIME_SERIES_GROUPED_TENDENCIES_URL, new JSONArray(tsList.stream().map(JsonTimeSeries::new).collect(Collectors.toList())));
         LOG.debug("Send to group time series tendencies");
-            if (response.has("response") && response.getString("response").equals("empty")) {
-                return Optional.empty();
-            }
-            return Optional.of(new TimeSeries(response));
-        }
-        return Optional.empty();
+        return JsonUtils.getListOfObjects(response)
+                .stream()
+                .map(TimeSeries::new)
+                .collect(Collectors.toList());
     }
 }

src/main/resources/templates/markup.html

@@ -14,7 +14,7 @@
         </tr>
         </thead>
         <tbody>
-        <tr th:each="t: ${ts}">
+        <tr th:each="t: ${groupedTs}">
             <td><span class="badge badge-success" th:text="${t.name}"></span></td>
             <td><span class="badge badge-success" th:text="${#lists.size(t.values)}"></span></td>
         </tr>