/*
* Copyright 2012 LinkedIn, Inc
*
* 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.
*/
package azkaban.webapp.servlet;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.LocalDateTime;
import org.joda.time.ReadablePeriod;
import org.joda.time.format.DateTimeFormat;
import azkaban.flow.Flow;
import azkaban.project.Project;
import azkaban.project.ProjectManager;
import azkaban.project.ProjectLogEvent.EventType;
import azkaban.user.Permission;
import azkaban.user.Role;
import azkaban.user.User;
import azkaban.user.Permission.Type;
import azkaban.user.UserManager;
import azkaban.utils.Pair;
import azkaban.webapp.AzkabanWebServer;
import azkaban.webapp.session.Session;
import azkaban.scheduler.Schedule;
import azkaban.scheduler.ScheduleManager;
public class ScheduleServlet extends LoginAbstractAzkabanServlet {
private static final long serialVersionUID = 1L;
private static final Logger logger = Logger.getLogger(ScheduleServlet.class);
private ProjectManager projectManager;
private ScheduleManager scheduleManager;
private UserManager userManager;
@Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
AzkabanWebServer server = (AzkabanWebServer)getApplication();
projectManager = server.getProjectManager();
scheduleManager = server.getScheduleManager();
userManager = server.getUserManager();
}
@Override
protected void handleGet(HttpServletRequest req, HttpServletResponse resp,
Session session) throws ServletException, IOException {
Page page = newPage(req, resp, session, "azkaban/webapp/servlet/velocity/scheduledflowpage.vm");
List<Schedule> schedules = scheduleManager.getSchedules();
page.add("schedules", schedules);
page.render();
}
@Override
protected void handlePost(HttpServletRequest req, HttpServletResponse resp, Session session) throws ServletException, IOException {
HashMap<String, Object> ret = new HashMap<String, Object>();
if (hasParam(req, "action")) {
String action = getParam(req, "action");
if (action.equals("scheduleFlow")) {
ajaxScheduleFlow(req, ret, session.getUser());
}
else if(action.equals("removeSched")){
ajaxRemoveSched(req, ret, session.getUser());
}
}
if(ret.get("status") == ("success"))
setSuccessMessageInCookie(resp, (String) ret.get("message"));
else
setErrorMessageInCookie(resp, (String) ret.get("message"));
this.writeJSON(resp, ret);
}
// private void handleAJAXAction(HttpServletRequest req, HttpServletResponse resp, Session session) throws ServletException, IOException {
// HashMap<String, Object> ret = new HashMap<String, Object>();
// String ajaxName = getParam(req, "ajax");
//
// if (ajaxName.equals("scheduleFlow")) {
// ajaxScheduleFlow(req, ret, session.getUser());
// }
//// }
// this.writeJSON(resp, ret);
// }
//
private void ajaxRemoveSched(HttpServletRequest req, Map<String, Object> ret, User user) throws ServletException{
int projectId = getIntParam(req, "projectId");
String flowName = getParam(req, "flowName");
Pair<Integer, String> scheduleId = new Pair<Integer, String>(projectId, flowName);
Schedule sched = scheduleManager.getSchedule(scheduleId);
// int projectId = sched.getProjectId();
Project project = projectManager.getProject(projectId);
if (project == null) {
ret.put("message", "Project " + projectId + " does not exist");
ret.put("status", "error");
return;
}
if(!hasPermission(project, user, Type.SCHEDULE)) {
ret.put("status", "error");
ret.put("message", "Permission denied. Cannot remove schedule " + projectId + "." + flowName);
return;
}
scheduleManager.removeSchedule(scheduleId);
logger.info("User '" + user.getUserId() + " has removed schedule " + sched.getScheduleName());
projectManager.postProjectEvent(project, EventType.SCHEDULE, user.getUserId(), "Schedule " + sched.toString() + " has been removed.");
ret.put("status", "success");
ret.put("message", "flow " + scheduleId.getSecond() + " removed from Schedules.");
return;
}
private void ajaxScheduleFlow(HttpServletRequest req, Map<String, Object> ret, User user) throws ServletException {
String projectName = getParam(req, "projectName");
String flowName = getParam(req, "flowName");
int projectId = getIntParam(req, "projectId");
Project project = projectManager.getProject(projectId);
if (project == null) {
ret.put("message", "Project " + projectName + " does not exist");
ret.put("status", "error");
return;
}
if (!hasPermission(project, user, Type.SCHEDULE)) {
ret.put("status", "error");
ret.put("message", "Permission denied. Cannot execute " + flowName);
return;
}
Flow flow = project.getFlow(flowName);
if (flow == null) {
ret.put("status", "error");
ret.put("message", "Flow " + flowName + " cannot be found in project " + project);
return;
}
int hour = getIntParam(req, "hour");
int minutes = getIntParam(req, "minutes");
boolean isPm = getParam(req, "am_pm").equalsIgnoreCase("pm");
DateTimeZone timezone = getParam(req, "timezone").equals("UTC") ? DateTimeZone.UTC : DateTimeZone.forID("America/Los_Angeles");
String scheduledDate = req.getParameter("date");
DateTime day = null;
if(scheduledDate == null || scheduledDate.trim().length() == 0) {
day = new LocalDateTime().toDateTime();
} else {
try {
day = DateTimeFormat.forPattern("MM/dd/yyyy").withZone(timezone).parseDateTime(scheduledDate);
} catch(IllegalArgumentException e) {
ret.put("error", "Invalid date: '" + scheduledDate + "'");
return;
}
}
ReadablePeriod thePeriod = null;
try {
if(hasParam(req, "is_recurring"))
thePeriod = Schedule.parsePeriodString(getParam(req, "period")+getParam(req,"period_units"));
}
catch(Exception e){
ret.put("error", e.getMessage());
}
if(isPm && hour < 12)
hour += 12;
hour %= 24;
// String submitUser = user.getUserId();
// String userExec = userSubmit;//getParam(req, "userExec");
// String scheduleId = projectId + "." + flowName;
DateTime submitTime = new DateTime();
DateTime firstSchedTime = day.withHourOfDay(hour).withMinuteOfHour(minutes).withSecondOfMinute(0);
//ScheduledFlow schedFlow = scheduleManager.schedule(scheduleId, projectId, flowId, userExec, userSubmit, submitTime, firstSchedTime, thePeriod);
//project.info("User '" + user.getUserId() + "' has scheduled " + flow.getId() + "[" + schedFlow.toNiceString() + "].");
Schedule schedule = scheduleManager.scheduleFlow(projectId, projectName, flowName, "ready", firstSchedTime.getMillis(), timezone, thePeriod, submitTime.getMillis(), firstSchedTime.getMillis(), firstSchedTime.getMillis(), user.getUserId());
logger.info("User '" + user.getUserId() + "' has scheduled " + "[" + projectName + flowName + " (" + projectId +")" + "].");
projectManager.postProjectEvent(project, EventType.SCHEDULE, user.getUserId(), "Schedule " + schedule.getScheduleName() + " has been added.");
ret.put("status", "success");
ret.put("message", projectName + "." + flowName + " scheduled.");
}
// private ReadablePeriod parsePeriod(HttpServletRequest req) throws ServletException {
// int period = getIntParam(req, "period");
// String periodUnits = getParam(req, "period_units");
// if("M".equals(periodUnits))
// return Months.months(period);
// else if("w".equals(periodUnits))
// return Weeks.weeks(period);
// else if("d".equals(periodUnits))
// return Days.days(period);
// else if("h".equals(periodUnits))
// return Hours.hours(period);
// else if("m".equals(periodUnits))
// return Minutes.minutes(period);
// else if("s".equals(periodUnits))
// return Seconds.seconds(period);
// else
// throw new ServletException("Unknown period unit: " + periodUnits);
// }
private boolean hasPermission(Project project, User user, Permission.Type type) {
if (project.hasPermission(user, type)) {
return true;
}
for(String roleName: user.getRoles()) {
Role role = userManager.getRole(roleName);
if (role.getPermission().isPermissionSet(type) || role.getPermission().isPermissionSet(Permission.Type.ADMIN)) {
return true;
}
}
return false;
}
}