init commit

rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/filter/TbCheckMessageNode.java

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+/**
+ * Copyright © 2018 The Thingsboard Authors
+ * <p>
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.google.gson.Gson;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+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.plugin.ComponentType;
+import org.thingsboard.server.common.msg.TbMsg;
+
+import java.util.List;
+
+@Slf4j
+@RuleNode(
+        type = ComponentType.FILTER,
+        name = "check key",
+        relationTypes = {"True", "False"},
+        configClazz = TbCheckMessageNodeConfiguration.class,
+        nodeDescription = "Checks the existence of the selected key in the message payload.",
+        nodeDetails = "If the selected key  exists - send Message via <b>True</b> chain, otherwise <b>False</b> chain is used.",
+        uiResources = {"static/rulenode/custom-nodes-config.js"},
+        configDirective = "tbFilterNodeCheckKeyConfig")
+public class TbCheckMessageNode implements TbNode {
+
+    private static final Gson gson = new Gson();
+
+    private TbCheckMessageNodeConfiguration config;
+    private List<String> messageNamesList;
+    private List<String> metadataNamesList;
+
+    @Override
+    public void init(TbContext tbContext, TbNodeConfiguration configuration) throws TbNodeException {
+        this.config = TbNodeUtils.convert(configuration, TbCheckMessageNodeConfiguration.class);
+        messageNamesList = config.getMessageNames();
+        metadataNamesList = config.getMetadataNames();
+    }
+
+    @Override
+    public void onMsg(TbContext ctx, TbMsg msg) {
+        JsonObject data = new JsonParser().parse(msg.getData()).getAsJsonObject();
+        JsonObject metadata = gson.toJsonTree(msg.getMetaData().getData()).getAsJsonObject();
+        try {
+            ctx.tellNext(msg, processAllMessageData(data) && processAllMessageMetadata(metadata) ? "True" : "False");
+        } catch (Exception e) {
+            ctx.tellFailure(msg, e);
+        }
+    }
+
+    @Override
+    public void destroy() {
+    }
+
+    private boolean processAllMessageData(JsonObject data) {
+        if (config.isCheckMessageData()) {
+            return process(data, messageNamesList);
+        } else {
+            return true;
+        }
+    }
+
+    private boolean processAllMessageMetadata(JsonObject metadata) {
+        if (config.isCheckMessageMetadata()) {
+            return process(metadata, metadataNamesList);
+        } else {
+            return true;
+        }
+    }
+
+    private boolean process(JsonObject object, List<String> fieldsList) {
+        for (String field : fieldsList) {
+            if (!object.has(field)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+}

rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/filter/TbCheckMessageNodeConfiguration.java

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+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 TbCheckMessageNodeConfiguration implements NodeConfiguration {
+
+    private List<String> messageNames;
+    private List<String> metadataNames;
+
+    private boolean checkMessageData;
+    private boolean checkMessageMetadata;
+    private boolean checkAllKeys;
+
+
+    @Override
+    public TbCheckMessageNodeConfiguration defaultConfiguration() {
+        TbCheckMessageNodeConfiguration configuration = new TbCheckMessageNodeConfiguration();
+        configuration.setMessageNames(Collections.emptyList());
+        configuration.setMetadataNames(Collections.emptyList());
+        configuration.setCheckMessageData(true);
+        configuration.setCheckMessageMetadata(false);
+        configuration.setCheckAllKeys(true);
+        return configuration;
+    }
+}