Java tutorial
/* ************************************************************************ # RESTful API for Zabbix based on Java. # # Copyright 2014 Yahya Al-Hazmi, TU Berlin. # Authors: Mingyuan Wu and Yahya Al-Hazmi # 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 # # This API allows you to request monitoring information from Zabbix-Server # through Zabbix-API ************************************************************************ This class is aimed to achieve the goal of getting network information from zabbix. ************************************************************************ */ import java.util.concurrent.atomic.AtomicLong; import java.util.*; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.json.simple.JSONObject; import org.json.simple.JSONArray; import org.json.simple.parser.ParseException; import org.json.simple.parser.JSONParser; import java.io.ByteArrayInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.util.Properties; import java.io.FileInputStream; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.methods.PutMethod; @Controller public class NetworkController { private final AtomicLong counter = new AtomicLong(); private static String LOOUT = "Outgoing traffic on interface lo"; private static String LOIN = "Incoming traffic on interface lo"; private static String ETH1OUT = "Outgoing traffic on interface eth1"; private static String ETH0OUT = "Outgoing traffic on interface eth0"; private static String ETH1IN = "Incoming traffic on interface eth1"; private static String ETH0IN = "Incoming traffic on interface eth0"; private static String LATENCY = "Network latency"; private static String PACKETLOSS = "Percentage of packet loss"; public String setRequest(String key_, String authentication, String hostid) { // create json object for apiinfo.version JSONArray list = new JSONArray(); JSONObject jsonObj = new JSONObject(); JSONObject search = new JSONObject(); JSONObject params = new JSONObject(); jsonObj.put("jsonrpc", "2.0"); jsonObj.put("method", "item.get"); params.put("output", "extend"); params.put("hostid", hostid); params.put("search", search); params.put("sortfield", "name"); search.put("key_", key_); jsonObj.put("params", params); jsonObj.put("auth", authentication);// todo jsonObj.put("id", new Integer(1)); return jsonObj.toString(); } public boolean comparision(String A, String B, JSONObject C, String D) { return (A.equals(B) && C.get("name").equals(D)); } public Network getNetwork(JSONObject obj, String hostid, String type) { String network = ""; String clock = ""; String metricType = ""; network = (String) obj.get("lastvalue"); clock = (String) obj.get("lastclock"); metricType = type; return new Network(hostid, type, network, clock); } public Network networkResponse(String hostid, PutMethod putMethod, String name) { JSONParser parser = new JSONParser(); String loginResponse = ""; HttpClient client = new HttpClient(); try { client.executeMethod(putMethod); // send to request to the zabbix api loginResponse = putMethod.getResponseBodyAsString(); // read the result of the response Object obj = parser.parse(loginResponse); JSONObject obj2 = (JSONObject) obj; String jsonrpc = (String) obj2.get("jsonrpc"); JSONArray array = (JSONArray) obj2.get("result"); for (int i = 0; i < array.size(); i++) { JSONObject tobj = (JSONObject) array.get(i); if (!tobj.get("hostid").equals(hostid)) continue; if (comparision(name, "loOut", tobj, LOOUT)) return getNetwork(tobj, hostid, LOOUT); else if (comparision(name, "loIn", tobj, LOIN)) return getNetwork(tobj, hostid, LOIN); else if (comparision(name, "eth1Out", tobj, ETH1OUT)) return getNetwork(tobj, hostid, ETH1OUT); else if (comparision(name, "eth0Out", tobj, ETH0OUT)) return getNetwork(tobj, hostid, ETH0OUT); else if (comparision(name, "eth0In", tobj, ETH0IN)) return getNetwork(tobj, hostid, ETH0IN); else if (comparision(name, "eth1In", tobj, ETH1IN)) return getNetwork(tobj, hostid, ETH1IN); else if (comparision(name, "latency", tobj, LATENCY)) return getNetwork(tobj, hostid, LATENCY); else if (comparision(name, "packetloss", tobj, PACKETLOSS)) return getNetwork(tobj, hostid, PACKETLOSS); else continue; } } catch (HttpException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (ParseException pe) { System.out.println("Error"); } return new Network( "Error: please provide the appropriate input parameters of the metric you are looking for its corresponding monitoring data:"); } //---------------begin of the connection--------------- @RequestMapping("/network") public @ResponseBody Network network( @RequestParam(value = "authentication", required = false, defaultValue = "Error") String authentication, @RequestParam(value = "hostid", required = false, defaultValue = "") String hostid, @RequestParam(value = "metricType", required = false, defaultValue = "") String name) throws FileNotFoundException, UnsupportedEncodingException, IOException { Properties props = new Properties(); FileInputStream fis = new FileInputStream("properties.xml"); //loading properites from properties file props.loadFromXML(fis); String server_ip = props.getProperty("server_ip"); String ZABBIX_API_URL = "http://" + server_ip + "/api_jsonrpc.php"; // 1.2.3.4 is your zabbix_server_ip PutMethod putMethod = new PutMethod(ZABBIX_API_URL); // content-type is controlled in api_jsonrpc.php, so set it like this putMethod.setRequestHeader("Content-Type", "application/json-rpc"); String request = ""; if (name.equals("latency")) request = setRequest("icmppingsec", authentication, hostid); else if (name.equals("packetloss")) request = setRequest("icmppingloss", authentication, hostid); else request = setRequest("net", authentication, hostid); putMethod.setRequestBody(request); // put the json object as input stream into request body return networkResponse(hostid, putMethod, name); } //--------------end of the connection------------------ }