OraMonRESTgetPrometheus.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 OraMonRESTgetPrometheus
*/
@WebServlet(description = "Calls getData() and getMetrics() and reports in Prometheus format", urlPatterns = { "/OraMonREST/getPrometheus" })
public class OraMonRESTgetPrometheus extends HttpServlet {
private static final long serialVersionUID = 1L;
private final static Logger LOGGER = Logger.getLogger(OraMonRESTgetPrometheus.class.getName());
/**
* @see HttpServlet#HttpServlet()
*/
public OraMonRESTgetPrometheus() {
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()
monitor.getData(age,pdbName);
String fName = monitor.getFriendlyName(pdbName);
String dbName = monitor.getDBName();
// Now return the metrics in Prometheus format
sb.append("CpuUsage{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getCPUPercent(pdbName) + "\n");
sb.append("LogicalReads{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getLogicalReadsPerSecond(pdbName) + "\n");
sb.append("Executes{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("execute count",pdbName) + "\n");
sb.append("UserCalls{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("user calls",pdbName) + "\n");
sb.append("CacheHitRatio{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getCacheHitRatioPercent(pdbName) + "\n");
sb.append("RedoSize{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("redo size",pdbName) + "\n");
sb.append("OSBusy{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getOsBusyPercent() + "\n");
sb.append("OSLoad{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getOsLoad() + "\n");
sb.append("OSPageIn{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("VM_IN_BYTES", OraMon.OSSTAT)/1024 + "\n");
sb.append("OSPageOut{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("VM_OUT_BYTES", OraMon.OSSTAT)/1024 + "\n");
sb.append("OSLoadperCpu{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getOsLoadPerCPU() + "\n");
sb.append("ConsistentGets{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("consistent gets",pdbName) + "\n");
sb.append("DBBlockGets{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("db block gets",pdbName) + "\n");
sb.append("BufferCacheHitRatio{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getBufferCacheHitRatioPercent(pdbName) + "\n");
sb.append("DBBlockChanges{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("db block changes",pdbName) + "\n");
sb.append("PhysicalReads{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("physical reads",pdbName) + "\n");
sb.append("PhysicalWrites{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("physical writes",pdbName) + "\n");
sb.append("RedoWrites{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("redo writes",pdbName) + "\n");
sb.append("NonidleWaitTime{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("non-idle wait time",pdbName) + "\n");
sb.append("FileIOWaitTime{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("file io wait time",pdbName) + "\n");
sb.append("UserCommits{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("user commits",pdbName) + "\n");
sb.append("UserRollbacks{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("user rollbacks",pdbName) + "\n");
sb.append("ParseCountTotal{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("parse count (total)",pdbName) + "\n");
sb.append("ParseCountHard{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getPerSecondValue("parse count (hard)",pdbName) + "\n");
sb.append("CpuUsagexNIWT{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getCPUPercent(true,pdbName) + "\n");
sb.append("CpuTime{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getCPUTimePerSecond(pdbName) + "\n");
sb.append("Cpus{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getNumberOfCPUs() + "\n");
sb.append("OraMonResponseTime{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getLastRTms() + "\n");
if(monitor.getBlockedState())
sb.append("OraMonBlocked{pdb=\""+fName+"\", cdb=\""+dbName+"\"} 1\n");
else
sb.append("OraMonBlocked{pdb=\""+fName+"\", cdb=\""+dbName+"\"} 0\n");
sb.append("OraMonAge{pdb=\""+fName+"\", cdb=\""+dbName+"\"} " + monitor.getAgeTs() + "\n");
}
} 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
}
}