Examples with ProtectionType com.emc.storageos.volumecontroller.RPRecommendation.ProtectionType used on opensource projects

Example 1 with ProtectionType

use of com.emc.storageos.volumecontroller.RPRecommendation.ProtectionType in project coprhd-controller by CoprHD.

the class RecoverPointScheduler method findSolution.

/**
 * Placement method that assembles recommendation objects based on the vpool and protection varrays.
 * Recursive: peels off one protectionVarray to hopefully assemble one Protection object within the recommendation object, then calls
 * itself
 * with the remainder of the protectionVarrays. If it fails to find a Protection for that protectionVarray, it returns failure and puts
 * the
 * protectionVarray back on the list.
 *
 * @param rpProtectionRecommendation - Top level RP recommendation
 * @param sourceRecommendation - Source Recommendation against which we need to find the solution for targets
 * @param varray - Source Virtual Array
 * @param vpool - Source Virtual Pool
 * @param targetVarrays - List of protection Virtual Arrays
 * @param capabilities - Virtual Pool capabilities
 * @param requestedCount - Resource count desired
 * @param isMetroPoint - Boolean indicating whether this is MetroPoint
 * @param activeSourceRecommendation - Primary Recommendation in case of MetroPoint. This field is null except for when we are finding
 *            solution for MP standby
 * @param project - Project
 * @return - True if protection solution was found, false otherwise.
 */
private boolean findSolution(RPProtectionRecommendation rpProtectionRecommendation, RPRecommendation sourceRecommendation, VirtualArray varray, VirtualPool vpool, List<VirtualArray> targetVarrays, VirtualPoolCapabilityValuesWrapper capabilities, int requestedCount, boolean isMetroPoint, RPRecommendation activeSourceRecommendation, Project project) {
    if (targetVarrays.isEmpty()) {
        _log.info("RP Placement : Could not find target solution because there are no protection virtual arrays specified.");
        return false;
    }
    // Find the virtual pool that applies to this protection virtual array
    // We are recursively calling into "findSolution", so pop the next protectionVarray off the top of the
    // passed in list of protectionVarrays. This protectionVarray will be removed from the list before
    // recursively calling back into the method (in the case that we do not find a solution).
    VirtualArray targetVarray = targetVarrays.get(0);
    placementStatus.getProcessedProtectionVArrays().put(targetVarray.getId(), true);
    // Find the correct target vpool. It is either implicitly the same as the source vpool or has been
    // explicitly set by the user.
    VpoolProtectionVarraySettings protectionSettings = RPHelper.getProtectionSettings(vpool, targetVarray, dbClient);
    // If there was no vpool specified with the protection settings, use the base vpool for this varray.
    VirtualPool targetVpool = vpool;
    if (protectionSettings.getVirtualPool() != null) {
        targetVpool = dbClient.queryObject(VirtualPool.class, protectionSettings.getVirtualPool());
    }
    _log.info("RP Placement : Determining placement on protection varray : " + targetVarray.getLabel());
    // Find matching pools for the protection varray
    VirtualPoolCapabilityValuesWrapper newCapabilities = new VirtualPoolCapabilityValuesWrapper(capabilities);
    newCapabilities.put(VirtualPoolCapabilityValuesWrapper.RESOURCE_COUNT, requestedCount);
    List<Recommendation> targetPoolRecommendations = new ArrayList<Recommendation>();
    // If MP remote target is specified, fetch the target recommendation from the active when looking at the standby side.
    if (isMetroPoint && activeSourceRecommendation != null && isMetroPointProtectionSpecified(activeSourceRecommendation, ProtectionType.REMOTE)) {
        StringBuffer unusedTargets = new StringBuffer();
        Recommendation targetPoolRecommendation = new Recommendation();
        for (RPRecommendation targetRec : activeSourceRecommendation.getTargetRecommendations()) {
            if (targetVarray.getId().equals(targetRec.getVirtualArray())) {
                targetPoolRecommendation.setSourceStoragePool(targetRec.getSourceStoragePool());
                targetPoolRecommendation.setSourceStorageSystem(targetRec.getSourceStorageSystem());
                targetPoolRecommendations.add(targetPoolRecommendation);
                break;
            } else {
                unusedTargets.append(targetRec.getVirtualArray().toString());
                unusedTargets.append(" ");
            }
        }
        // we need to kick out and continue on.
        if (targetPoolRecommendations.isEmpty()) {
            _log.warn(String.format("RP Placement : Could not find a MetroPoint CRR Solution because the" + " Active and Standby Copies could not find a common Target varray. " + "Active Target varrays [ %s] - Standby Target varray [ %s ]. " + "Reason: This might not be a MetroPoint CRR config. Please check the vpool config and " + "the RecoverPoint Protection System for the connectivity of the varrays.", unusedTargets.toString(), targetVarray.getId()));
            return false;
        }
    } else {
        // Get target pool recommendations. Each recommendation also specifies the resource
        // count that the pool can satisfy based on the size requested.
        targetPoolRecommendations = getRecommendedPools(rpProtectionRecommendation, targetVarray, targetVpool, null, null, newCapabilities, RPHelper.TARGET, null);
        if (targetPoolRecommendations.isEmpty()) {
            _log.error(String.format("RP Placement : No matching storage pools found for the source varray: [%s]. " + "There are no storage pools that match the passed vpool parameters and protocols and/or there are no pools that have " + "enough capacity to hold at least one resource of the requested size.", varray.getLabel()));
            throw APIException.badRequests.noMatchingStoragePoolsForVpoolAndVarray(vpool.getLabel(), varray.getLabel());
        }
    }
    // Find the correct target journal varray. It is either implicitly the same as the target varray or has been
    // explicitly set by the user.
    VirtualArray targetJournalVarray = targetVarray;
    if (!NullColumnValueGetter.isNullURI(protectionSettings.getJournalVarray())) {
        targetJournalVarray = dbClient.queryObject(VirtualArray.class, protectionSettings.getJournalVarray());
    }
    // Find the correct target journal vpool. It is either implicitly the same as the target vpool or has been
    // explicitly set by the user.
    VirtualPool targetJournalVpool = targetVpool;
    if (!NullColumnValueGetter.isNullURI(protectionSettings.getJournalVpool())) {
        targetJournalVpool = dbClient.queryObject(VirtualPool.class, protectionSettings.getJournalVpool());
    }
    Iterator<Recommendation> targetPoolRecommendationsIter = targetPoolRecommendations.iterator();
    while (targetPoolRecommendationsIter.hasNext()) {
        Recommendation targetPoolRecommendation = targetPoolRecommendationsIter.next();
        StoragePool candidateTargetPool = dbClient.queryObject(StoragePool.class, targetPoolRecommendation.getSourceStoragePool());
        List<String> associatedStorageSystems = getCandidateTargetVisibleStorageSystems(rpProtectionRecommendation.getProtectionDevice(), targetVarray, sourceRecommendation.getInternalSiteName(), candidateTargetPool, VirtualPool.vPoolSpecifiesHighAvailability(targetVpool));
        if (associatedStorageSystems.isEmpty()) {
            _log.info(String.format("RP Placement : Solution cannot be found using target pool %s" + " there is no connectivity to rp cluster sites.", candidateTargetPool.getLabel()));
            continue;
        }
        // We want to find an internal site name that isn't already in the solution
        for (String associatedStorageSystem : associatedStorageSystems) {
            String targetInternalSiteName = ProtectionSystem.getAssociatedStorageSystemSiteName(associatedStorageSystem);
            URI targetStorageSystemURI = ConnectivityUtil.findStorageSystemBySerialNumber(ProtectionSystem.getAssociatedStorageSystemSerialNumber(associatedStorageSystem), dbClient, StorageSystemType.BLOCK);
            ProtectionType protectionType = null;
            if (!sourceRecommendation.containsTargetInternalSiteName(targetInternalSiteName)) {
                // MetroPoint has been specified so process the MetroPoint targets accordingly.
                if (isMetroPoint) {
                    if (targetInternalSiteName.equals(sourceRecommendation.getInternalSiteName())) {
                        // A local protection candidate.
                        if (isMetroPointProtectionSpecified(sourceRecommendation, ProtectionType.LOCAL)) {
                            // so continue onto the next candidate RP site.
                            continue;
                        }
                        // Add the local protection
                        protectionType = ProtectionType.LOCAL;
                    } else {
                        if (isMetroPointProtectionSpecified(sourceRecommendation, ProtectionType.REMOTE)) {
                            // candidate RP site.
                            continue;
                        } else {
                            if (activeSourceRecommendation != null) {
                                String primaryTargetInternalSiteName = getMetroPointRemoteTargetRPSite(rpProtectionRecommendation);
                                if (primaryTargetInternalSiteName != null && !targetInternalSiteName.equals(primaryTargetInternalSiteName)) {
                                    // site but the same as the primary target site.
                                    continue;
                                }
                            }
                            // Add the remote protection
                            protectionType = ProtectionType.REMOTE;
                        }
                    }
                }
            }
            // Check to make sure the RP site is connected to the varray
            URI protectionSystemURI = rpProtectionRecommendation.getProtectionDevice();
            if (!isRpSiteConnectedToVarray(targetStorageSystemURI, protectionSystemURI, targetInternalSiteName, targetVarray)) {
                _log.info(String.format("RP Placement: Disqualified RP site [%s] because its initiators are not in a network " + "configured for use by the virtual array [%s]", targetInternalSiteName, targetVarray.getLabel()));
                continue;
            }
            // Maybe make a topology check in here? Or is the source topology check enough?
            StorageSystem targetStorageSystem = dbClient.queryObject(StorageSystem.class, targetStorageSystemURI);
            ProtectionSystem ps = dbClient.queryObject(ProtectionSystem.class, protectionSystemURI);
            String rpSiteName = (ps.getRpSiteNames() != null) ? ps.getRpSiteNames().get(targetInternalSiteName) : "";
            _log.info(String.format("RP Placement : Choosing RP Site %s (%s) for target on varray [%s](%s)", rpSiteName, targetInternalSiteName, targetVarray.getLabel(), targetVarray.getId()));
            // Construct the target recommendation object
            _log.info(String.format("RP Placement : Build RP Target Recommendation..."));
            RPRecommendation targetRecommendation = buildRpRecommendation(associatedStorageSystem, targetVarray, targetVpool, candidateTargetPool, newCapabilities, requestedCount, targetInternalSiteName, targetStorageSystemURI, targetStorageSystem.getSystemType(), ps);
            if (targetRecommendation == null) {
                // No Target Recommendation found, so continue.
                _log.warn(String.format("RP Placement : Could not create Target Recommendation using [%s], continuing...", associatedStorageSystem));
                continue;
            }
            _log.info(String.format("RP Placement : RP Target Recommendation %s %n", targetRecommendation.toString(dbClient, ps, 1)));
            if (protectionType != null) {
                targetRecommendation.setProtectionType(protectionType);
            }
            // First Determine if journal recommendation need to be computed. It might have already been done.
            boolean isJournalPlacedForVarray = false;
            for (RPRecommendation targetJournalRec : rpProtectionRecommendation.getTargetJournalRecommendations()) {
                if (targetJournalRec.getVirtualArray().equals(targetJournalVarray.getId())) {
                    isJournalPlacedForVarray = true;
                }
            }
            // Build the target journal recommendation
            if (!isJournalPlacedForVarray) {
                _log.info(String.format("RP Placement : Build RP Target Journal Recommendation..."));
                RPRecommendation targetJournalRecommendation = buildJournalRecommendation(rpProtectionRecommendation, targetInternalSiteName, protectionSettings.getJournalSize(), targetJournalVarray, targetJournalVpool, ps, newCapabilities, capabilities.getResourceCount(), null, false);
                if (targetJournalRecommendation == null) {
                    // No Target Journal Recommendation found, so continue.
                    _log.warn(String.format("RP Placement : Could not create Target Journal Recommendation using [%s], continuing...", associatedStorageSystem));
                    continue;
                }
                _log.info(String.format("RP Placement : RP Target Journal Recommendation %s %n", targetJournalRecommendation.toString(dbClient, ps, 1)));
                rpProtectionRecommendation.getTargetJournalRecommendations().add(targetJournalRecommendation);
            } else {
                _log.info(String.format("RP Placement : RP Target Journal already placed."));
            }
            // the Target Recommendation.
            if (sourceRecommendation.getTargetRecommendations() == null) {
                sourceRecommendation.setTargetRecommendations(new ArrayList<RPRecommendation>());
            }
            sourceRecommendation.getTargetRecommendations().add(targetRecommendation);
            // Set the placement status to reference either the primary or secondary.
            PlacementStatus tmpPlacementStatus = placementStatus;
            if (activeSourceRecommendation != null) {
                tmpPlacementStatus = secondaryPlacementStatus;
            }
            // At this point we have found a target storage pool accessible to the protection vPool and protection vArray
            // that can be protected by an rp cluster site that is part of the same rp system that can protect the source storage pool
            rpProtectionRecommendation.setPlacementStepsCompleted(PlacementProgress.IDENTIFIED_SOLUTION_FOR_SUBSET_OF_TARGETS);
            if (tmpPlacementStatus.isBestSolutionToDate(rpProtectionRecommendation)) {
                tmpPlacementStatus.setLatestInvalidRecommendation(rpProtectionRecommendation);
            }
            if (isMetroPoint) {
                if (rpProtectionRecommendation.getSourceRecommendations() != null && getProtectionVarrays(rpProtectionRecommendation).size() == targetVarrays.size()) {
                    finalizeTargetPlacement(rpProtectionRecommendation, tmpPlacementStatus);
                    return true;
                }
            } else if (targetVarrays.size() == 1) {
                finalizeTargetPlacement(rpProtectionRecommendation, tmpPlacementStatus);
                return true;
            }
            // Find a solution based on this recommendation object and the remaining target arrays
            // Make a new protection varray list
            List<VirtualArray> remainingVarrays = new ArrayList<VirtualArray>();
            remainingVarrays.addAll(targetVarrays);
            remainingVarrays.remove(targetVarray);
            if (!remainingVarrays.isEmpty()) {
                _log.info("RP placement: Calling find solution on the next virtual array : " + remainingVarrays.get(0).getLabel() + " Current virtual array: " + targetVarray.getLabel());
            } else {
                _log.info("RP Placement : Solution cannot be found, will try again with different pool combination");
                return false;
            }
            if (!this.findSolution(rpProtectionRecommendation, sourceRecommendation, varray, vpool, remainingVarrays, newCapabilities, requestedCount, isMetroPoint, activeSourceRecommendation, project)) {
                // Remove the current recommendation and try the next site name, pool, etc.
                _log.info("RP Placement: Solution for remaining virtual arrays couldn't be found. " + "Trying different solution (if available) for varray: " + targetVarray.getLabel());
            } else {
                // We found a good solution
                _log.info("RP Placement: Solution for remaining virtual arrays was found. Returning to caller. Virtual Array : " + targetVarray.getLabel());
                return true;
            }
        }
    }
    // If we get here, the recommendation object never got a new protection object, and we just return false,
    // which will move onto the next possibility (in the case of a recursive call)
    _log.info("RP Placement : Solution cannot be found, will try again with different pool combination");
    return false;
}