<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ page trimDirectiveWhitespaces="true" %>
<%@ page import="java.io.*" %>
<%!
private String getParameterOrDefault(HttpServletRequest request, String param, String defaultValue) {
return (request.getParameter(param) == null || request.getParameter(param).equals("") ? defaultValue : request.getParameter(param));
}
private boolean isNullOrEmpty(String param) {
return param == null || param.equals("");
}
%>
<%
// This param helps us to know what step we are
String action = getParameterOrDefault(request, "action", null);
String team = getParameterOrDefault(request, "team", "");
String message = getParameterOrDefault(request, "message", "");
if(action == null) {
// Code to receive alarm data and return input form (first call when action is null)
%>
<%
} else if(action.equals("submit")) {
// Code to receive user input, execute the script and return the result (second call when action param equals submit)
ProcessBuilder processBuilder = null;
Process process = null;
BufferedReader reader = null;
StringBuilder script_output = null;
try {
processBuilder = new ProcessBuilder();
// Replace your command here
processBuilder.command("/bin/bash", "-c", "echo Invoked: " + team + " " + message);
process = processBuilder.start();
reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
script_output = new StringBuilder();
String line = null;
while((line = reader.readLine()) != null) {
script_output.append(line + "
");
}
String retVal = (process.waitFor() == 0 ? "SUCCESS" : "FAIL");
%>
Command execution: <%=retVal%>
Command output:
<%=script_output%>
<%
} catch(Exception e) {
out.write("Error occured while executing server side action");
// This line will print the exception in tomcat catalina.out log
e.printStackTrace();
} finally {
script_output = null;
if(reader != null)
reader.close();
reader = null;
process = null;
}
} else {
// Unknown action
out.write("Error occured: action " + action + " not recognized");
}
%>