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new ruleNode 'json path'

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This commit is contained in:
Yuriy Lytvynchuk 2022-08-17 12:48:40 +03:00
parent 5891a1df65
commit b7c68d7cfb
5 changed files with 292 additions and 1 deletions
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1
pom.xml
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@ -1213,7 +1213,6 @@
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>${json-path.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>

4
rule-engine/rule-engine-components/pom.xml
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@ -160,6 +160,10 @@
</exclusions>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
</dependency>
</dependencies>
<build>

83
rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/transform/TbJsonPathNode.java Normal file
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@ -0,0 +1,83 @@
/**
* Copyright © 2016-2022 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.transform;
import com.fasterxml.jackson.databind.JsonNode;
import com.jayway.jsonpath.Configuration;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.PathNotFoundException;
import com.jayway.jsonpath.spi.json.JacksonJsonNodeJsonProvider;
import lombok.extern.slf4j.Slf4j;
import org.thingsboard.common.util.JacksonUtil;
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.StringUtils;
import org.thingsboard.server.common.data.plugin.ComponentType;
import org.thingsboard.server.common.msg.TbMsg;
import java.util.concurrent.ExecutionException;
@Slf4j
@RuleNode(
type = ComponentType.TRANSFORMATION,
name = "json path",
configClazz = TbJsonPathNodeConfiguration.class,
nodeDescription = "JSONPath expression from message",
nodeDetails = "",
icon = "functions",
configDirective = "tbTransformationNodeJsonPathConfig"
)
public class TbJsonPathNode implements TbNode {
TbJsonPathNodeConfiguration config;
Configuration configurationJsonPath;
JsonPath jsonPath;
@Override
public void init(TbContext ctx, TbNodeConfiguration configuration) throws TbNodeException {
this.config = TbNodeUtils.convert(configuration, TbJsonPathNodeConfiguration.class);
this.configurationJsonPath = Configuration.builder()
.jsonProvider(new JacksonJsonNodeJsonProvider())
.build();
if (StringUtils.isEmpty(config.getJsonPath())) {
throw new IllegalArgumentException("JsonPath expression is not specified");
}
this.jsonPath = JsonPath.compile(config.getJsonPath());
}
@Override
public void onMsg(TbContext ctx, TbMsg msg) throws ExecutionException, InterruptedException, TbNodeException {
try {
JsonNode jsonPathData = jsonPath.read(msg.getData(), this.configurationJsonPath);
ctx.tellSuccess(createNewMsg(msg, jsonPathData));
} catch (PathNotFoundException e) {
ctx.tellFailure(msg, e);
}
}
private TbMsg createNewMsg(TbMsg msg, JsonNode msgNode) {
return TbMsg.newMsg(msg.getQueueName(), msg.getType(), msg.getOriginator(), msg.getMetaData(), JacksonUtil.toString(msgNode));
}
@Override
public void destroy() {
}
}

33
rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/transform/TbJsonPathNodeConfiguration.java Normal file
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@ -0,0 +1,33 @@
/**
* Copyright © 2016-2022 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.transform;
import lombok.Data;
import org.thingsboard.rule.engine.api.NodeConfiguration;
@Data
public class TbJsonPathNodeConfiguration implements NodeConfiguration<TbJsonPathNodeConfiguration> {
private String jsonPath;
@Override
public TbJsonPathNodeConfiguration defaultConfiguration() {
TbJsonPathNodeConfiguration configuration = new TbJsonPathNodeConfiguration();
configuration.setJsonPath("$");
return configuration;
}
}

172
rule-engine/rule-engine-components/src/test/java/org/thingsboard/rule/engine/transform/TbJsonPathNodeTest.java Normal file
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@ -0,0 +1,172 @@
/**
* Copyright © 2016-2022 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.transform;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.jayway.jsonpath.PathNotFoundException;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentCaptor;
import org.thingsboard.common.util.JacksonUtil;
import org.thingsboard.rule.engine.api.TbContext;
import org.thingsboard.rule.engine.api.TbNodeConfiguration;
import org.thingsboard.rule.engine.api.TbNodeException;
import org.thingsboard.server.common.data.id.DeviceId;
import org.thingsboard.server.common.data.id.EntityId;
import org.thingsboard.server.common.msg.TbMsg;
import org.thingsboard.server.common.msg.TbMsgMetaData;
import org.thingsboard.server.common.msg.queue.TbMsgCallback;
import java.util.Map;
import java.util.UUID;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
public class TbJsonPathNodeTest {
final ObjectMapper mapper = new ObjectMapper();
DeviceId deviceId;
TbJsonPathNode node;
TbJsonPathNodeConfiguration config;
TbNodeConfiguration nodeConfiguration;
TbContext ctx;
TbMsgCallback callback;
@BeforeEach
void setUp() throws TbNodeException {
deviceId = new DeviceId(UUID.randomUUID());
callback = mock(TbMsgCallback.class);
ctx = mock(TbContext.class);
config = new TbJsonPathNodeConfiguration();
config.setJsonPath("$.Attribute_2");
nodeConfiguration = new TbNodeConfiguration(mapper.valueToTree(config));
node = spy(new TbJsonPathNode());
node.init(ctx, nodeConfiguration);
}
@AfterEach
void tearDown() {
node.destroy();
}
@Test
void givenDefaultConfig_whenInit_thenOK() {
assertThat(node.config).isEqualTo(config);
}
@Test
void givenDefaultConfig_whenInit_thenFail() {
config.setJsonPath("");
nodeConfiguration = new TbNodeConfiguration(mapper.valueToTree(config));
assertThatThrownBy(() -> node.init(ctx, nodeConfiguration)).isInstanceOf(IllegalArgumentException.class);
}
@Test
void givenDefaultConfig_whenVerify_thenOK() {
TbJsonPathNodeConfiguration defaultConfig = new TbJsonPathNodeConfiguration().defaultConfiguration();
assertThat(defaultConfig.getJsonPath()).isEqualTo("$");
}
@Test
void givenPrimitiveMsg_whenOnMsg_thenVerifyOutput() throws Exception {
String data = "{\"Attribute_1\":22.5,\"Attribute_2\":100}";
VerifyOutputMsg(data, 1, 100);
data = "{\"Attribute_1\":22.5,\"Attribute_2\":\"StringValue\"}";
VerifyOutputMsg(data, 2, "StringValue");
}
@Test
void givenJsonArray_whenOnMsg_thenVerifyOutput() throws Exception {
String data = "{\"Attribute_1\":22.5,\"Attribute_2\":[{\"Attribute_3\":22.5,\"Attribute_4\":10.3}, {\"Attribute_5\":22.5,\"Attribute_6\":10.3}]}";
VerifyOutputMsg(data, 1, JacksonUtil.toJsonNode(data).get("Attribute_2"));
}
@Test
void givenJsonNode_whenOnMsg_thenVerifyOutput() throws Exception {
String data = "{\"Attribute_1\":22.5,\"Attribute_2\":{\"Attribute_3\":22.5,\"Attribute_4\":10.3}}";
VerifyOutputMsg(data, 1, JacksonUtil.toJsonNode(data).get("Attribute_2"));
}
@Test
void givenJsonArrayWithFilter_whenOnMsg_thenVerifyOutput() throws Exception {
config.setJsonPath("$.Attribute_2[?(@.voltage > 200)]");
nodeConfiguration = new TbNodeConfiguration(mapper.valueToTree(config));
node.init(ctx, nodeConfiguration);
String data = "{\"Attribute_1\":22.5,\"Attribute_2\":[{\"voltage\":220}, {\"voltage\":250}, {\"voltage\":110}]}";
VerifyOutputMsg(data, 1, JacksonUtil.toJsonNode("[{\"voltage\":220}, {\"voltage\":250}]"));
}
@Test
void givenNoArrayMsg_whenOnMsg_thenTellFailure() throws Exception {
String data = "{\"Attribute_1\":22.5,\"Attribute_5\":10.3}";
JsonNode dataNode = JacksonUtil.toJsonNode(data);
TbMsg msg = getTbMsg(deviceId, dataNode.toString());
node.onMsg(ctx, msg);
ArgumentCaptor<TbMsg> newMsgCaptor = ArgumentCaptor.forClass(TbMsg.class);
ArgumentCaptor<Exception> exceptionCaptor = ArgumentCaptor.forClass(Exception.class);
verify(ctx, never()).tellSuccess(any());
verify(ctx, times(1)).tellFailure(newMsgCaptor.capture(), exceptionCaptor.capture());
assertThat(newMsgCaptor.getValue()).isSameAs(msg);
assertThat(exceptionCaptor.getValue()).isInstanceOf(RuntimeException.class);
}
@Test
void givenNoResultsForPath_whenOnMsg_thenTellFailure() throws Exception {
String data = "{\"Attribute_1\":22.5,\"Attribute_5\":10.3}";
JsonNode dataNode = JacksonUtil.toJsonNode(data);
TbMsg msg = getTbMsg(deviceId, dataNode.toString());
node.onMsg(ctx, msg);
ArgumentCaptor<TbMsg> newMsgCaptor = ArgumentCaptor.forClass(TbMsg.class);
ArgumentCaptor<Exception> exceptionCaptor = ArgumentCaptor.forClass(Exception.class);
verify(ctx, never()).tellSuccess(any());
verify(ctx, times(1)).tellFailure(newMsgCaptor.capture(), exceptionCaptor.capture());
assertThat(newMsgCaptor.getValue()).isSameAs(msg);
assertThat(exceptionCaptor.getValue()).isInstanceOf(PathNotFoundException.class);
}
private void VerifyOutputMsg(String data, int countTellSuccess, Object value) throws Exception {
JsonNode dataNode = JacksonUtil.toJsonNode(data);
node.onMsg(ctx, getTbMsg(deviceId, dataNode.toString()));
ArgumentCaptor<TbMsg> newMsgCaptor = ArgumentCaptor.forClass(TbMsg.class);
verify(ctx, times(countTellSuccess)).tellSuccess(newMsgCaptor.capture());
verify(ctx, never()).tellFailure(any(), any());
assertThat(newMsgCaptor.getValue().getData()).isEqualTo(JacksonUtil.toString(value));
}
private TbMsg getTbMsg(EntityId entityId, String data) {
Map<String, String> mdMap = Map.of("country", "US",
"city", "NY"
);
return TbMsg.newMsg("POST_ATTRIBUTES_REQUEST", entityId, new TbMsgMetaData(mdMap), data, callback);
}
}