Get history from Zabbix server in Java

I wrote the code to take the history of the item in Zabbix server and display it in Java. This time, I decided to extract the history of local time, which is the easiest to understand.

What to prepare

https://github.com/hengyunabc/zabbix-api Debug item

Things to start

Connect to the API and view the version.

Main.java

		DefaultZabbixApi ZabbixAPI = new DefaultZabbixApi("http://[Host IP]/zabbix/api_jsonrpc.php");
		ZabbixAPI.init();//Initialization
		System.out.println(ZabbixAPI.apiVersion());//Version display

Then log in.

Main.java

	    boolean login = ZabbixAPI.login("name", "password");
		System.err.println("login:" + login);

If the login is successful, login: true is displayed. From here you can use the functions of Zabbix API.

Source code

Before fetching the history, fetch the item ID with item.get.

Main.java

        //request
		JSONObject filter = new JSONObject();
		filter.put("key_", new String[]{"system.localtime"});//Item key
		filter.put("name", new String[]{"myitem"});//Item name
		Request getRequest = RequestBuilder.newBuilder().method("item.get").paramEntry("filter", filter).build();
       //response
		JSONObject getResponse = ZabbixAPI.call(getRequest);
		String itemid = getResponse.getJSONArray("result").getJSONObject(0).getString("itemid");
		String name = getResponse.getJSONArray("result").getJSONObject(0).getString("name");

The name of the item is also included in the response to confirm that the correct data has been obtained.

Next, get the history.

Main.java

		Date date = new Date();
		Timestamp now = new Timestamp(date.getTime()/1000L);//time_In till, specify by Unix Timestamp
       //iteids:itemid specification history:Specify data type sortfield:Specify sort criteria sortoder:Ascending or descending time_till:Display data up to the specified time
		getRequest = RequestBuilder.newBuilder().method("history.get")
				.paramEntry("itemids", itemid).paramEntry("history", 3)
				.paramEntry("sortfield", "clock").paramEntry("sortorder", "DESC")
				.paramEntry("time_till", now).build();
		getResponse = ZabbixAPI.call(getRequest);
		for(int i = 0;i < getResponse.getJSONArray("result").size();i++) {
			String history = getResponse.getJSONArray("result").getJSONObject(i).getString("value");//You can take it with Int type
			System.out.println(new Timestamp(Integer.parseInt(history) * 1000L));//Convert Unix Timestamp to java Timestamp
		}

Whole code

Main.java

public class Main {
	public void start() {
		DefaultZabbixApi ZabbixAPI = new DefaultZabbixApi("http://[Host IP]/zabbix/api_jsonrpc.php");
		ZabbixAPI.init();
		System.out.println(ZabbixAPI.apiVersion());
		
		boolean login = ZabbixAPI.login("name", "password");
		System.err.println("login:" + login);

		JSONObject filter = new JSONObject();
		filter.put("key_", new String[]{"system.localtime"});
		filter.put("name", new String[]{"myitem"});
		Request getRequest = RequestBuilder.newBuilder().method("item.get").paramEntry("filter", filter).build();
		JSONObject getResponse = ZabbixAPI.call(getRequest);
		String itemid = getResponse.getJSONArray("result").getJSONObject(0).getString("itemid");
		String name = getResponse.getJSONArray("result").getJSONObject(0).getString("name");
		
		Date date = new Date();
		Timestamp now = new Timestamp(date.getTime()/1000L);//time_In till, specify by Unix Timestamp
		getRequest = RequestBuilder.newBuilder().method("history.get")
				.paramEntry("itemids", itemid).paramEntry("history", 3)
				.paramEntry("sortfield", "clock").paramEntry("sortorder", "DESC")
				.paramEntry("time_till", now).build();
		getResponse = ZabbixAPI.call(getRequest);
		for(int i = 0;i < getResponse.getJSONArray("result").size();i++) {
			String history = getResponse.getJSONArray("result").getJSONObject(i).getString("value");
			long time = getResponse.getJSONArray("result").getJSONObject(i).getLong("clock");
			System.out.println(new Timestamp(Integer.parseInt(history) * 1000L));//Convert Unix Timestamp to java Timestamp
		}
	}
	public static void main(String[] args) {
		Main m = new Main();
		m.start();
	}
}

First, I wrote it in Go language to understand how to use the API and how it works, and then wrote it in Java, but since the JSON protocol is fixed, the code itself did not have to be that long. I will write this from the place where JSON is thrown with httpclient.

https://www.zabbix.com/documentation/2.2/manual/api A list of API functions is listed here, so if you want to use other functions, please refer to it.