OraMonRESTgetData.java
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import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import se.lil.om.OraMon;
import se.lil.om.Registry;
/**
* Servlet implementation class OraMonREST
*/
@WebServlet(description = "REST API for OraMon", urlPatterns = { "/OraMonREST/getData" })
public class OraMonRESTgetData extends HttpServlet {
private static final long serialVersionUID = 1L;
private final static Logger LOGGER = Logger.getLogger(OraMonRESTgetData.class.getName());
/**
* @see HttpServlet#HttpServlet()
*/
public OraMonRESTgetData() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("application/json");
try {
StringBuffer sb = new StringBuffer();
int age = 0;
if(request.getParameterMap().containsKey("age")) {
try {
age = Integer.parseInt(request.getParameter("age"));
} catch (Exception e) {
response.setStatus(400);
response.getWriter().println("{\"error\":true,\"msg\":\"The specified age parameter is not a valid integer number\"}");
return;
}
}
if(request.getParameterMap().containsKey("connectionString")) {
// We have a connection string, find the monitor or create it and call getData() on the monitor
OraMon monitor = null;
if(request.getParameter("connectionString").startsWith("jdbc:oracle")) {
// Full con string
String[] shortConArray = request.getParameter("connectionString").split("@");
if(shortConArray.length != 2) {
// Error, wrong format of string
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
response.getWriter().println("{\"error\":true,\"msg\":\"connectionString needs to be in format jdbc:oracle:thin:@//host:port/servicename or jdbc:oracle:thin:@(<TNS Connection String>) with optional :username:password at the end.\"}");
return;
}
String[] shortConArray2 = shortConArray[1].split(":");
if(shortConArray2[0].startsWith("(")) {
// TNS Format
if(shortConArray2.length == 3) {
// We have a TNS connection string and username + password
monitor = Registry.findOrCreate(shortConArray[0] + "@" + shortConArray2[0], shortConArray2[1], shortConArray2[2]);
} else if (shortConArray2.length == 1) {
// We only have the TNS connection string, no username or password
monitor = Registry.find(shortConArray[0] + "@" + shortConArray2[0]);
} else {
// We have something else, not implemented
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
response.getWriter().println("{\"error\":true,\"msg\":\"connectionString needs to be in format jdbc:oracle:thin:@(<TNS Connection String>) with optional :username:password at the end.\"}");
return;
}
} else {
// JDBC Format
if(shortConArray2[0].startsWith("//") && shortConArray2.length == 4) {
// We have new style and username and password, we can try to create the monitor if it doesnt exist
monitor = Registry.findOrCreate(shortConArray[0] + "@" + shortConArray2[0] + ":" + shortConArray2[1], shortConArray2[2], shortConArray2[3]);
} else if(!shortConArray2[0].startsWith("//") && shortConArray2.length == 5) {
// We have old style with sid with :username:password, try to find or create it
monitor = Registry.findOrCreate(shortConArray[0] + "@" + shortConArray2[0] + ":" + shortConArray2[1] + ":" + shortConArray2[2], shortConArray2[3], shortConArray2[4]);
} else if(shortConArray2[0].startsWith("//") && shortConArray2.length == 2) {
// We have new style but only have the connection string, try to find it (we cant create one without username/password)
monitor = Registry.find(request.getParameter("connectionString"));
} else if(!shortConArray2[0].startsWith("//") && shortConArray2.length == 3) {
// We have old style sid and no :username:password
monitor = Registry.find(request.getParameter("connectionString"));
} else {
// Wrong format
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
response.getWriter().println("{\"error\":true,\"msg\":\"connectionString needs to be in format jdbc:oracle:thin:@//host:port/servicename with optional :username:password at the end.\"}");
return;
}
}
} else {
// Short con string
// Check that we have a valid connection string (added support to handle diffrent kinds of connection strings)
String[] conStrParamArray = request.getParameter("connectionString").split(":");
Boolean serviceName = false;
if(conStrParamArray.length == 4) {
// Check if service name is used ( / instead of : )
if(conStrParamArray[1].indexOf("/") >= 0) {
serviceName = true;
}
}
if(conStrParamArray.length != 5 && serviceName == false) {
// Error, we need 5 parts in the connection string
response.setStatus(400);
response.getWriter().println("{\"error\":true,\"msg\":\"connectionString needs to be in format host:port:sid:username:password or host:port/servicename:username:password\"}");
return;
}
String conStr, usrStr, pwdStr;
if(serviceName) {
conStr = "jdbc:oracle:thin:@//" + conStrParamArray[0] + ":" + conStrParamArray[1];
usrStr = conStrParamArray[2];
pwdStr = conStrParamArray[3];
} else {
conStr = "jdbc:oracle:thin:@" + conStrParamArray[0] + ":" + conStrParamArray[1] + ":" + conStrParamArray[2];
usrStr = conStrParamArray[3];
pwdStr = conStrParamArray[4];
}
// Try to find the monitor in our list
monitor = Registry.findOrCreate(conStr, usrStr, pwdStr);
}
String pdbName = null;
if(request.getParameterMap().containsKey("pdbName")) {
String temp = request.getParameter("pdbName");
if (!temp.isEmpty()) pdbName = temp;
}
if(monitor != null) {
if(request.getParameterMap().containsKey("block")) {
// Call setBlocked()
boolean blockedState = false;
try {
blockedState = Boolean.parseBoolean(request.getParameter("block"));
} catch (Exception e) {
response.setStatus(400);
response.getWriter().println("{\"error\":true,\"msg\":\"The specified block parameter is not a valid boolean\"}");
return;
}
monitor.setBlockedState(blockedState);
if(blockedState == monitor.getBlockedState()) {
response.setStatus(200);
response.getWriter().println("{\"error\":false,\"msg\":\"The blocked state is now set to "+blockedState+"\"}");
return;
} else {
response.setStatus(500);
response.getWriter().println("{\"error\":true,\"msg\":\"The blocked state could not be set to "+blockedState+"\"}");
return;
}
} else {
// Call getData()
boolean didUpdate = monitor.getData(age,pdbName);
String dbName = monitor.getFriendlyName(pdbName);
if(didUpdate) {
sb.append("{\"error\":false,\"msg\":\"Sucessfully collected data on '" + dbName + "'\"");
sb.append(",\"ms\":"+monitor.getLastRTms()+"}");
} else {
response.setStatus(HttpServletResponse.SC_ACCEPTED);
sb.append("{\"error\":false");
sb.append(",\"msg\":\"Data does not need to be updated on '" + dbName + "' either because it is blocked, another thread did concurrently update the monitor and we just waited for it to complete, or because the age (if) specified was higher than the monitors data age.\"");
sb.append(",\"age\":"+monitor.getAgeTs());
sb.append(",\"blocked\":"+monitor.getBlockedState()+"}");
}
}
} else {
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
sb.append("{\"error\":true,\"msg\":\"Monitor not found and can't create one without :username:password '" + request.getParameter("connectionString") + "'\"");
sb.append("}");
}
} else {
// No input, just return the list of monitors
sb.append("{\"count\":" + Registry.getList().size() + "}");
}
response.getWriter().println(sb.toString());
} catch (Throwable e) {
response.setStatus(500);
response.getWriter().println("{\"error\":true,\"msg\":\""+e.toString().replace("\n"," ").replace("\"","\\\"").trim()+"\"}");
LOGGER.log(Level.SEVERE, e.toString());
e.printStackTrace();
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPut(HttpServletRequest, HttpServletResponse)
*/
protected void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doDelete(HttpServletRequest, HttpServletResponse)
*/
protected void doDelete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doHead(HttpServletRequest, HttpServletResponse)
*/
protected void doHead(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
}