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Original file line number Diff line number Diff line change
@@ -0,0 +1,363 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.iotdb.db.it.mqtt;

import org.apache.iotdb.isession.ISession;
import org.apache.iotdb.isession.SessionDataSet;
import org.apache.iotdb.it.env.EnvFactory;
import org.apache.iotdb.it.env.cluster.node.DataNodeWrapper;
import org.apache.iotdb.it.framework.IoTDBTestRunner;
import org.apache.iotdb.itbase.category.ClusterIT;
import org.apache.iotdb.itbase.category.LocalStandaloneIT;
import org.apache.iotdb.itbase.env.BaseEnv;
import org.apache.iotdb.rpc.StatementExecutionException;

import org.apache.tsfile.read.common.Field;
import org.apache.tsfile.read.common.RowRecord;
import org.awaitility.Awaitility;
import org.fusesource.mqtt.client.BlockingConnection;
import org.fusesource.mqtt.client.MQTT;
import org.fusesource.mqtt.client.QoS;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

/**
* Integration tests for MQTT service with JSON payload formatter. JSON formatter supports tree
* model data insertion.
*/
@RunWith(IoTDBTestRunner.class)
@Category({LocalStandaloneIT.class, ClusterIT.class})
public class IoTDBMQTTServiceJsonIT {

private BlockingConnection connection;
private static final String IP = System.getProperty("RemoteIp", "127.0.0.1");
private static final String USER = System.getProperty("RemoteUser", "root");
private static final String PASSWORD = System.getProperty("RemotePassword", "root");
public static final String FORMATTER = "json";

@Before
public void setUp() throws Exception {
BaseEnv baseEnv = EnvFactory.getEnv();
baseEnv.getConfig().getDataNodeConfig().setEnableMQTTService(true);
baseEnv.getConfig().getDataNodeConfig().setMqttPayloadFormatter(FORMATTER);
baseEnv.initClusterEnvironment();
DataNodeWrapper portConflictDataNodeWrapper = EnvFactory.getEnv().getDataNodeWrapper(0);
int port = portConflictDataNodeWrapper.getMqttPort();
MQTT mqtt = new MQTT();
mqtt.setHost(IP, port);
mqtt.setUserName(USER);
mqtt.setPassword(PASSWORD);
mqtt.setConnectAttemptsMax(3);
mqtt.setReconnectDelay(10);
mqtt.setClientId("jsonClientId1");

connection = mqtt.blockingConnection();
connection.connect();
}

@After
public void tearDown() throws Exception {
try {
if (connection != null) {
connection.disconnect();
}
} catch (IOException e) {
e.printStackTrace();
fail(e.getMessage());
}
EnvFactory.getEnv().cleanClusterEnvironment();
}

/** Test single JSON message with multiple measurements */
@Test
public void testSingleJsonMessage() throws Exception {
try (final ISession session = EnvFactory.getEnv().getSessionConnection()) {
String payload =
"{"
+ "\"device\":\"root.sg.d1\","
+ "\"timestamp\":1,"
+ "\"measurements\":[\"s1\",\"s2\"],"
+ "\"values\":[1.5,2.5]"
+ "}";

Awaitility.await()
.atMost(3, TimeUnit.MINUTES)
.pollInterval(1, TimeUnit.SECONDS)
.until(
() -> {
connection.publish("root.sg.d1", payload.getBytes(), QoS.AT_LEAST_ONCE, false);
try (final SessionDataSet dataSet =
session.executeQueryStatement("select s1, s2 from root.sg.d1 where time = 1")) {
if (!dataSet.hasNext()) {
return false;
}
RowRecord row = dataSet.next();
List<Field> fields = row.getFields();
assertEquals(2, fields.size());
assertEquals(1.5, fields.get(0).getDoubleV(), 0.001);
assertEquals(2.5, fields.get(1).getDoubleV(), 0.001);
return true;
} catch (StatementExecutionException e) {
if (e.getMessage() != null && e.getMessage().contains("does not exist")) {
return false;
} else {
throw e;
}
}
});
}
}

/** Test batch JSON message with timestamps array */
@Test
public void testBatchJsonMessage() throws Exception {
try (final ISession session = EnvFactory.getEnv().getSessionConnection()) {
String payload =
"{"
+ "\"device\":\"root.sg.d2\","
+ "\"timestamps\":[1,2,3],"
+ "\"measurements\":[\"s1\",\"s2\"],"
+ "\"values\":[[1.0,2.0],[3.0,4.0],[5.0,6.0]]"
+ "}";

Awaitility.await()
.atMost(3, TimeUnit.MINUTES)
.pollInterval(1, TimeUnit.SECONDS)
.until(
() -> {
connection.publish("root.sg.d2", payload.getBytes(), QoS.AT_LEAST_ONCE, false);
try (final SessionDataSet dataSet =
session.executeQueryStatement("select count(s1) from root.sg.d2")) {
if (!dataSet.hasNext()) {
return false;
}
RowRecord row = dataSet.next();
// Should have 3 records
assertEquals(3, row.getFields().get(0).getLongV());
return true;
} catch (StatementExecutionException e) {
if (e.getMessage() != null && e.getMessage().contains("does not exist")) {
return false;
} else {
throw e;
}
}
});
}
}

/** Test JSON array with multiple messages */
@Test
public void testJsonArray() throws Exception {
try (final ISession session = EnvFactory.getEnv().getSessionConnection()) {
String payload =
"["
+ "{\"device\":\"root.sg.d3\",\"timestamp\":1,\"measurements\":[\"s1\"],\"values\":[10.0]},"
+ "{\"device\":\"root.sg.d3\",\"timestamp\":2,\"measurements\":[\"s1\"],\"values\":[20.0]},"
+ "{\"device\":\"root.sg.d3\",\"timestamp\":3,\"measurements\":[\"s1\"],\"values\":[30.0]}"
+ "]";

Awaitility.await()
.atMost(3, TimeUnit.MINUTES)
.pollInterval(1, TimeUnit.SECONDS)
.until(
() -> {
connection.publish("root.sg.d3", payload.getBytes(), QoS.AT_LEAST_ONCE, false);
try (final SessionDataSet dataSet =
session.executeQueryStatement("select s1 from root.sg.d3")) {
int count = 0;
double sum = 0;
while (dataSet.hasNext()) {
RowRecord row = dataSet.next();
sum += row.getFields().get(0).getDoubleV();
count++;
}
if (count != 3) {
return false;
}
// sum should be 10 + 20 + 30 = 60
assertEquals(60.0, sum, 0.001);
return true;
} catch (StatementExecutionException e) {
if (e.getMessage() != null && e.getMessage().contains("does not exist")) {
return false;
} else {
throw e;
}
}
});
}
}

/** Test JSON with explicit data types */
@Test
public void testJsonWithDataTypes() throws Exception {
try (final ISession session = EnvFactory.getEnv().getSessionConnection()) {
String payload =
"{"
+ "\"device\":\"root.sg.d4\","
+ "\"timestamp\":1,"
+ "\"measurements\":[\"intVal\",\"floatVal\",\"boolVal\",\"textVal\"],"
+ "\"values\":[100,3.14,true,\"hello\"],"
+ "\"datatypes\":[\"INT32\",\"FLOAT\",\"BOOLEAN\",\"TEXT\"]"
+ "}";

Awaitility.await()
.atMost(3, TimeUnit.MINUTES)
.pollInterval(1, TimeUnit.SECONDS)
.until(
() -> {
connection.publish("root.sg.d4", payload.getBytes(), QoS.AT_LEAST_ONCE, false);
try (final SessionDataSet dataSet =
session.executeQueryStatement(
"select intVal, floatVal, boolVal, textVal from root.sg.d4 where time = 1")) {
if (!dataSet.hasNext()) {
return false;
}
List<Field> fields = dataSet.next().getFields();
assertEquals(4, fields.size());
assertEquals(100, fields.get(0).getIntV());
assertEquals(3.14f, fields.get(1).getFloatV(), 0.01);
assertTrue(fields.get(2).getBoolV());
assertEquals("hello", fields.get(3).getStringValue());
return true;
} catch (StatementExecutionException e) {
if (e.getMessage() != null && e.getMessage().contains("does not exist")) {
return false;
} else {
throw e;
}
}
});
}
}

/** Test multiple devices in single JSON array */
@Test
public void testMultipleDevicesJsonArray() throws Exception {
try (final ISession session = EnvFactory.getEnv().getSessionConnection()) {
String payload =
"["
+ "{\"device\":\"root.sg.device1\",\"timestamp\":1,\"measurements\":[\"temp\"],\"values\":[25.5]},"
+ "{\"device\":\"root.sg.device2\",\"timestamp\":1,\"measurements\":[\"temp\"],\"values\":[26.5]},"
+ "{\"device\":\"root.sg.device3\",\"timestamp\":1,\"measurements\":[\"temp\"],\"values\":[27.5]}"
+ "]";

Awaitility.await()
.atMost(3, TimeUnit.MINUTES)
.pollInterval(1, TimeUnit.SECONDS)
.until(
() -> {
connection.publish("root.sg", payload.getBytes(), QoS.AT_LEAST_ONCE, false);
try {
// Check device1
try (final SessionDataSet dataSet1 =
session.executeQueryStatement(
"select temp from root.sg.device1 where time = 1")) {
if (!dataSet1.hasNext()) {
return false;
}
assertEquals(25.5, dataSet1.next().getFields().get(0).getDoubleV(), 0.001);
}
// Check device2
try (final SessionDataSet dataSet2 =
session.executeQueryStatement(
"select temp from root.sg.device2 where time = 1")) {
if (!dataSet2.hasNext()) {
return false;
}
assertEquals(26.5, dataSet2.next().getFields().get(0).getDoubleV(), 0.001);
}
// Check device3
try (final SessionDataSet dataSet3 =
session.executeQueryStatement(
"select temp from root.sg.device3 where time = 1")) {
if (!dataSet3.hasNext()) {
return false;
}
assertEquals(27.5, dataSet3.next().getFields().get(0).getDoubleV(), 0.001);
}
return true;
} catch (StatementExecutionException e) {
if (e.getMessage() != null && e.getMessage().contains("does not exist")) {
return false;
} else {
throw e;
}
}
});
}
}

/** Test batch JSON with different values per timestamp */
@Test
public void testBatchJsonWithVariousValues() throws Exception {
try (final ISession session = EnvFactory.getEnv().getSessionConnection()) {
String payload =
"{"
+ "\"device\":\"root.sg.d5\","
+ "\"timestamps\":[100,200,300,400,500],"
+ "\"measurements\":[\"temperature\",\"humidity\"],"
+ "\"values\":[[20.1,60.0],[21.2,61.5],[22.3,62.0],[23.4,63.5],[24.5,64.0]]"
+ "}";

Awaitility.await()
.atMost(3, TimeUnit.MINUTES)
.pollInterval(1, TimeUnit.SECONDS)
.until(
() -> {
connection.publish("root.sg.d5", payload.getBytes(), QoS.AT_LEAST_ONCE, false);
try (final SessionDataSet dataSet =
session.executeQueryStatement("select temperature, humidity from root.sg.d5")) {
int count = 0;
while (dataSet.hasNext()) {
RowRecord row = dataSet.next();
List<Field> fields = row.getFields();
assertEquals(2, fields.size());
// Temperature should be between 20 and 25
double temp = fields.get(0).getDoubleV();
assertTrue(temp >= 20.0 && temp <= 25.0);
// Humidity should be between 60 and 65
double humidity = fields.get(1).getDoubleV();
assertTrue(humidity >= 60.0 && humidity <= 65.0);
count++;
}
return count == 5;
} catch (StatementExecutionException e) {
if (e.getMessage() != null && e.getMessage().contains("does not exist")) {
return false;
} else {
throw e;
}
}
});
}
}
}
Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,7 @@ public void setUp() throws Exception {
mqtt.setPassword(PASSWORD);
mqtt.setConnectAttemptsMax(3);
mqtt.setReconnectDelay(10);
mqtt.setClientId("clientId01");
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Copilot AI Jan 27, 2026

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This PR claims to "Add mqtt IT for json mode" but the test is configured to use the "line" payload formatter (FORMATTER = "line" on line 56), not JSON. The line formatter processes line protocol format data, while the json formatter would process JSON format data. Either the PR description is incorrect, or the test should be using FORMATTER = "json" to test JSON mode as described.

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connection = mqtt.blockingConnection();
connection.connect();
Expand Down