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Java API to access the InfluxDB REST API
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package org.influxdb.example;
import org.influxdb.InfluxDB;
import org.influxdb.InfluxDBFactory;
import org.influxdb.dto.QueryResult;
import org.influxdb.dto.Query;
import java.util.LinkedList;
import java.util.List;
/**
* @author StrakarCe
* @since 07/05/2021
* @version 1
*/
public class Android {
// put the address IP of your database
String address = "http://192.168.1.75:8000/";
String dbName = "myDatabase";
String table = "SERIES";
QueryResult actual;
Boolean flag = false;
InfluxDB con;
public Android() {
super();
}
public void queryExecute(final Query query) {
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
//InfluxDB connector = InfluxDBFactory.connect(address);
// if you want to open every time
System.out.println("Send the query to the database ...");
// FOR A REAL APP CREATE A LOGGER ;
List results = new LinkedList<>();
actual = con.query(query);
} catch (Exception e) {
e.printStackTrace();
}
flag = true; // For simplicity, I use a simple flag to know when the thread have finished
}
});
thread.start();
}
/**
* It's to open the connexion with the database.
* In my case I decide to open once, do many query and close.
*/
public void connexion() {
con = InfluxDBFactory.connect(address);
}
/**
* It's to close after my list of query.
*/
public void close() {
con.close();
}
/*
* simple example of how you can create a query
*/
private void queryLauncher(final String query) {
queryExecute(new Query(query, dbName));
while (!flag) { // ugly method to wait the thread
System.out.println("Wait the thread");
}
flag = false;
}
public String getEtat() {
queryLauncher("select last(value) from PTEC");
return actual.getResults().get(0).getSeries().get(0).getValues().get(0).get(1).toString();
}
public String getHC() {
queryLauncher("SELECT last(value) FROM HCHC");
return actual.getResults().get(0).getSeries().get(0).getValues().get(0).get(1).toString();
}
// ------------------------- Example when you want to use it ------------
/*
Android test = new Android();
refresh.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
test.connexion();
etat2.setText(test.getEtat());
hc2.setText(test.getHC());
hp2.setText(test.getHP());
prix2.setText(test.getDepense());
percMens2.setText(test.getPercentageMensuel());
percTotal2.setText(test.getPercentageTotal());
test.close();
}
});
*/
}
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