Examples with InvalidEventMessageException cz.metacentrum.perun.dispatcher.exceptions.InvalidEventMessageException used on opensource projects

Example 1 with InvalidEventMessageException

use of cz.metacentrum.perun.dispatcher.exceptions.InvalidEventMessageException in project perun by CESNET.

the class EventExecServiceResolverImpl method parseEvent.

@Override
public Map<Facility, Set<ExecService>> parseEvent(String event) throws InvalidEventMessageException, ServiceNotExistsException, InternalErrorException, PrivilegeException {
    log.info("I am going to process event:" + event);
    /**
		 * Expected string format as on:
		 * https://projekty.ics.muni.cz/perunv3/trac
		 * /wiki/PerunEngineDispatcherController event|x|[timestamp][Event
		 * header][Event data]
		 */
    String eventParsingPattern = "^\\[([a-zA-Z0-9+: ]+)\\]\\[([^\\]]+)\\]\\[(.*)\\]$";
    Pattern pattern = Pattern.compile(eventParsingPattern);
    Matcher matcher = pattern.matcher(event);
    boolean matchFound = matcher.find();
    if (matchFound) {
        log.debug("Message format matched ok...");
        // NOT USED ANYMORE: not applicable in dispatcher
        // String thisEngineID = matcher.group(1);
        // // This should indeed match the current Engine instance ID, so
        // let's compare it...
        // if (Integer.parseInt(thisEngineID) != Integer.parseInt((String)
        // propertiesBean.get("engine.unique.id"))) {
        // throw new InvalidEventMessageException("Wrong Engine ID. Was:" +
        // thisEngineID + ", Expected:" +
        // propertiesBean.get("engine.unique.id"));
        // }
        // // Not being used at the moment.
        // String timeStamp = matcher.group(2);
        // Header should provide information regarding the target facility.
        String eventHeader = matcher.group(2);
        // We expect the string to contain something like this:
        // facility.id=2 ???
        // String headerParsingPattern = ".*facility.id\\=([0-9]+).*";
        // Pattern headerPattern = Pattern.compile(headerParsingPattern);
        // Matcher headerMatcher = headerPattern.matcher(eventHeader);
        /*
			 * boolean headerMatchFound = headerMatcher.find();
			 * if(!headerMatchFound) { throw new InvalidEventMessageException(
			 * "Invalid event header. It does not contain the expected facility.id=value..."
			 * ); } int facilityId = Integer.parseInt(matcher.group(1));
			 * PerunSession perunSession =
			 * engineManager.getPerunSession(propertiesBean
			 * .getProperty("perun.principal")); Facility facility = null; try {
			 * facility = facilitiesManager.getFacilityById(perunSession,
			 * facilityId); } catch (FacilityNotExistsException e) { throw new
			 * InvalidEventMessageException
			 * ("Facility with ID "+facilityId+"does not exist.", e); } catch
			 * (InternalErrorException e) { throw new
			 * InvalidEventMessageException("Unknown error...", e); } catch
			 * (PrivilegeException e) { throw new
			 * InvalidEventMessageException("Principal "
			 * +propertiesBean.getProperty
			 * ("perun.principal")+" is not allowed to access that facility. ",
			 * e); }
			 */
        // Data should provide information regarding the target ExecService
        // (Processing rule).
        String eventData = matcher.group(3);
        log.debug("Event data to be parsed:" + eventData);
        // GET All Beans (only PerunBeans) from message
        List<PerunBean> listOfBeans = new ArrayList<PerunBean>();
        listOfBeans = AuditParser.parseLog(eventData);
        // Prepare variables
        AttributeDefinition attributeDefinition = null;
        Attribute attribute = null;
        Facility facility = null;
        Resource resource = null;
        Group group = null;
        User user = null;
        Member member = null;
        Service service = null;
        Host host = null;
        // etc. ?
        for (PerunBean pb : listOfBeans) {
            if (pb instanceof AttributeDefinition && pb instanceof Attribute) {
                attribute = (Attribute) pb;
            } else if (pb instanceof Facility) {
                facility = (Facility) pb;
            } else if (pb instanceof Resource) {
                resource = (Resource) pb;
            } else if (pb instanceof Group) {
                group = (Group) pb;
            } else if (pb instanceof User) {
                user = (User) pb;
            } else if (pb instanceof Member) {
                member = (Member) pb;
            } else if (pb instanceof Service) {
                service = (Service) pb;
            } else if (pb instanceof Host) {
                host = (Host) pb;
            }
        }
        // If there is any attribute, so create AttributeDefinition
        if (attribute != null) {
            attributeDefinition = new AttributeDefinition(attribute);
            log.debug("Attribute found in event. {}.", attributeDefinition);
        }
        List<Facility> facilitiesResolvedFromEvent = new ArrayList<Facility>();
        List<Resource> resourcesResolvedFromEvent = new ArrayList<Resource>();
        List<Service> servicesResolvedFromEvent = new ArrayList<Service>();
        // =============== Resolve facilities from event======================
        PerunSession perunSession = perun.getPerunSession(new PerunPrincipal(dispatcherPropertiesBean.getProperty("perun.principal.name"), dispatcherPropertiesBean.getProperty("perun.principal.extSourceName"), dispatcherPropertiesBean.getProperty("perun.principal.extSourceType")), new PerunClient());
        // Try to find FACILITY in event
        if (facility != null) {
            try {
                log.debug("Facility found in event. {}.", facility);
                facilitiesResolvedFromEvent.add(facility);
                resourcesResolvedFromEvent.addAll(perun.getFacilitiesManager().getAssignedResources(perunSession, facility));
            } catch (FacilityNotExistsException ex) {
                log.debug("Non-existing facility found while resolving event. id={}", facility.getId());
            }
        } else {
            // Try to find RESOURCE in event
            if (resource != null) {
                resourcesResolvedFromEvent.add(resource);
            } else {
                // Try to find GROUP in event
                if (group != null) {
                    try {
                        resourcesResolvedFromEvent = perun.getResourcesManager().getAssignedResources(perunSession, group);
                    } catch (GroupNotExistsException ex) {
                        log.debug("Non-existing group found while resolving event. id={}", group.getId());
                    }
                } else {
                    // try to find USER in event
                    if (user != null) {
                        try {
                            resourcesResolvedFromEvent = perun.getUsersManager().getAllowedResources(perunSession, user);
                        } catch (UserNotExistsException ex) {
                            log.debug("Non-existing user found while resolving event. id={}", user.getId());
                        }
                    } else {
                        // try to find MEMBER in event
                        if (member != null) {
                            try {
                                resourcesResolvedFromEvent = perun.getResourcesManager().getAllowedResources(perunSession, member);
                            } catch (MemberNotExistsException ex) {
                                log.debug("Non-existing member found while resolving event. id={}", member.getId());
                            }
                        } else {
                            // try to find HOST in event
                            if (host != null) {
                                try {
                                    log.debug("Host found in event.id= {}.", host.getId());
                                    facility = perun.getFacilitiesManager().getFacilityForHost(perunSession, host);
                                    facilitiesResolvedFromEvent.add(facility);
                                    resourcesResolvedFromEvent.addAll(perun.getFacilitiesManager().getAssignedResources(perunSession, facility));
                                } catch (FacilityNotExistsException ex) {
                                    log.debug("Host on non-existing facility found while resolving event. Host id={}", host.getId());
                                } catch (HostNotExistsException ex) {
                                    log.debug("Non-existing host found while resolving event. id={}", host.getId());
                                }
                            } else {
                                log.warn("No match found for this event. Event={}", event);
                            }
                        }
                    }
                }
            }
        }
        // TODO resolve more than one service
        if (service != null) {
            servicesResolvedFromEvent.add(service);
        }
        //List<Pair<List<ExecService>, Facility>> pairs = new ArrayList<Pair<List<ExecService>, Facility>>();
        Map<Facility, Set<ExecService>> result = new HashMap<Facility, Set<ExecService>>();
        for (Resource r : resourcesResolvedFromEvent) {
            Facility facilityResolvedFromEvent;
            List<Service> servicesResolvedFromResource;
            try {
                facilityResolvedFromEvent = perun.getResourcesManager().getFacility(perunSession, r);
                servicesResolvedFromResource = perun.getResourcesManager().getAssignedServices(perunSession, r);
                // process only services resolved from event if any
                if (!servicesResolvedFromEvent.isEmpty())
                    servicesResolvedFromResource.retainAll(servicesResolvedFromEvent);
            } catch (ResourceNotExistsException ex) {
                log.debug("Non-existing resource found while resolving event. Resource={}", r);
                // skip to next resource
                continue;
            }
            for (Service s : servicesResolvedFromResource) {
                // TODO: Optimize with an SQL query...
                List<ExecService> execServicesGenAndSend = generalServiceManager.listExecServices(perunSession, s.getId());
                List<ExecService> execServices = new ArrayList<ExecService>();
                for (ExecService execService : execServicesGenAndSend) {
                    if (execService.getExecServiceType().equals(ExecServiceType.SEND)) {
                        execServices.add(execService);
                    }
                }
                if (attributeDefinition != null) {
                    // remove from future processing services
                    // which don't require the found attribute
                    // TODO (CHECKME) This method can raise
                    // ServiceNotExistsException. Is it ok? Or it must be
                    // catch?
                    List<AttributeDefinition> serviceRequiredAttributes = perun.getAttributesManager().getRequiredAttributesDefinition(perunSession, s);
                    if (!serviceRequiredAttributes.contains(attributeDefinition))
                        continue;
                }
                if (!result.containsKey(facilityResolvedFromEvent)) {
                    result.put(facilityResolvedFromEvent, new HashSet<ExecService>(execServices));
                } else {
                    result.get(facilityResolvedFromEvent).addAll(execServices);
                }
            }
        }
        log.info("I am going to return " + result.size() + " facilities.");
        return result;
    } else {
        throw new InvalidEventMessageException("Message[" + event + "]");
    }
}