created TbCheckAlarmStatusNode

+/**
+ * Copyright © 2016-2020 The Thingsboard Authors
+ *
+ * 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.thingsboard.rule.engine.filter;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.common.util.concurrent.FutureCallback;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
+import org.thingsboard.rule.engine.api.RuleNode;
+import org.thingsboard.rule.engine.api.TbContext;
+import org.thingsboard.rule.engine.api.TbNode;
+import org.thingsboard.rule.engine.api.TbNodeConfiguration;
+import org.thingsboard.rule.engine.api.TbNodeException;
+import org.thingsboard.rule.engine.api.util.TbNodeUtils;
+import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.plugin.ComponentType;
+import org.thingsboard.server.common.msg.TbMsg;
+
+import javax.annotation.Nullable;
+import java.io.IOException;
+
+import static org.thingsboard.rule.engine.api.TbRelationTypes.FAILURE;
+import static org.thingsboard.rule.engine.api.TbRelationTypes.SUCCESS;
+
+@Slf4j
+@RuleNode(
+        type = ComponentType.FILTER,
+        name = "checks alarm status",
+        configClazz = TbCheckAlarmStatusNodeConfig.class,
+        nodeDescription = "Checks alarm status.",
+        nodeDetails = "If the alarm status matches the specified one - msg is success if does not match - msg is failure.",
+        uiResources = {"static/rulenode/rulenode-core-config.js"},
+        configDirective = "tbFilterNodeCheckAlarmStatusConfig")
+public class TbCheckAlarmStatusNode implements TbNode {
+    private TbCheckAlarmStatusNodeConfig config;
+    private final ObjectMapper mapper = new ObjectMapper();
+
+    @Override
+    public void init(TbContext tbContext, TbNodeConfiguration configuration) throws TbNodeException {
+        this.config = TbNodeUtils.convert(configuration, TbCheckAlarmStatusNodeConfig.class);
+    }
+
+    @Override
+    public void onMsg(TbContext ctx, TbMsg msg) throws TbNodeException {
+        try {
+            Alarm alarm = mapper.readValue(msg.getData(), Alarm.class);
+
+            ListenableFuture<Alarm> latest = ctx.getAlarmService().findAlarmByIdAsync(ctx.getTenantId(), alarm.getId());
+
+            Futures.addCallback(latest, new FutureCallback<Alarm>() {
+                @Override
+                public void onSuccess(@Nullable Alarm result) {
+                    boolean isPresent = false;
+                    for (String alarmStatus : config.getAlarmStatusList()) {
+                        if (alarm.getStatus().name().equals(alarmStatus)) {
+                            isPresent = true;
+                            break;
+                        }
+                    }
+
+                    if (isPresent) {
+                        ctx.tellNext(msg, SUCCESS);
+                    } else {
+                        ctx.tellNext(msg, FAILURE);
+                    }
+                }
+
+                @Override
+                public void onFailure(Throwable t) {
+                    ctx.tellFailure(msg, t);
+                }
+            });
+        } catch (IOException e) {
+            log.error("Failed to parse alarm: [{}]", msg.getData());
+            throw new TbNodeException(e);
+        }
+    }
+
+    @Override
+    public void destroy() {
+    }
+}

+/**
+ * Copyright © 2016-2020 The Thingsboard Authors
+ *
+ * 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.thingsboard.rule.engine.filter;
+
+import lombok.Data;
+import org.thingsboard.rule.engine.api.NodeConfiguration;
+
+import java.util.Collections;
+import java.util.List;
+
+@Data
+public class TbCheckAlarmStatusNodeConfig implements NodeConfiguration<TbCheckAlarmStatusNodeConfig> {
+    private List<String> alarmStatusList;
+
+    @Override
+    public TbCheckAlarmStatusNodeConfig defaultConfiguration() {
+        TbCheckAlarmStatusNodeConfig config = new TbCheckAlarmStatusNodeConfig();
+        config.setAlarmStatusList(Collections.emptyList());
+        return config;
+    }
+}