krishan1390 commented on code in PR #16165: URL: https://github.com/apache/pinot/pull/16165#discussion_r2160359286
########## pinot-common/src/main/java/org/apache/pinot/common/utils/tables/TableViewsUtils.java: ########## @@ -0,0 +1,239 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 org.apache.pinot.common.utils.tables; + +import com.fasterxml.jackson.annotation.JsonProperty; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import javax.annotation.Nonnull; +import javax.annotation.Nullable; +import org.apache.helix.HelixAdmin; +import org.apache.helix.model.ExternalView; +import org.apache.helix.model.IdealState; +import org.apache.pinot.spi.config.table.TableType; +import org.apache.pinot.spi.utils.CommonConstants; +import org.apache.pinot.spi.utils.builder.TableNameBuilder; + + +public class TableViewsUtils { + public static final String IDEALSTATE = "idealstate"; + public static final String EXTERNALVIEW = "externalview"; + + private TableViewsUtils() { + } + + public static class TableView { + @JsonProperty("OFFLINE") + public Map<String, Map<String, String>> _offline; + @JsonProperty("REALTIME") + public Map<String, Map<String, String>> _realtime; + } + + public static TableView getSegmentsView(TableView tableView, + List<String> segmentNames) { + TableView tableViewResult = new TableView(); + if (tableView._offline != null) { + tableViewResult._offline = getTableTypeSegmentsView(tableView._offline, segmentNames); + } + if (tableView._realtime != null) { + tableViewResult._realtime = getTableTypeSegmentsView(tableView._realtime, segmentNames); + } + return tableViewResult; + } + + public static List<SegmentStatusInfo> getSegmentStatuses(Map<String, Map<String, String>> externalViewMap, + Map<String, Map<String, String>> idealStateMap) { + return getSegmentStatuses(externalViewMap, idealStateMap, null); + } + + public static List<SegmentStatusInfo> getSegmentStatuses(Map<String, Map<String, String>> externalViewMap, + Map<String, Map<String, String>> idealStateMap, @Nullable String filterStatus) { + List<SegmentStatusInfo> segmentStatusInfoList = new ArrayList<>(); + + for (Map.Entry<String, Map<String, String>> entry : idealStateMap.entrySet()) { + String segment = entry.getKey(); + Map<String, String> externalViewEntryValue = externalViewMap.get(segment); + Map<String, String> idealViewEntryValue = entry.getValue(); + + String computedStatus = computeDisplayStatus(externalViewEntryValue, idealViewEntryValue); + if ((filterStatus == null) || (computedStatus.equals(filterStatus))) { + segmentStatusInfoList.add(new SegmentStatusInfo(segment, computedStatus)); + } + } + + return segmentStatusInfoList; + } + + public static Map<String, String> getSegmentStatusesMap(Map<String, Map<String, String>> externalViewMap, + Map<String, Map<String, String>> idealStateMap) { + Map<String, String> segmentStatusInfoList = new HashMap<>(); + + for (Map.Entry<String, Map<String, String>> entry : idealStateMap.entrySet()) { + String segment = entry.getKey(); + Map<String, String> externalViewEntryValue = externalViewMap.get(segment); + Map<String, String> idealViewEntryValue = entry.getValue(); + + String computedStatus = computeDisplayStatus(externalViewEntryValue, idealViewEntryValue); + segmentStatusInfoList.put(segment, computedStatus); + } + return segmentStatusInfoList; + } + + public static String computeDisplayStatus(Map<String, String> externalView, Map<String, String> idealView) { + if (externalView == null) { + return CommonConstants.Helix.StateModel.DisplaySegmentStatus.UPDATING; + } + + if (isErrorSegment(externalView)) { + return CommonConstants.Helix.StateModel.DisplaySegmentStatus.BAD; + } + + if (externalView.equals(idealView)) { + if (isOnlineOrConsumingSegment(externalView) || isOfflineSegment(externalView)) { + return CommonConstants.Helix.StateModel.DisplaySegmentStatus.GOOD; + } else { + return CommonConstants.Helix.StateModel.DisplaySegmentStatus.UPDATING; + } + } + + return CommonConstants.Helix.StateModel.DisplaySegmentStatus.UPDATING; + } + + public static Map<String, Map<String, String>> getTableTypeSegmentsView( + Map<String, Map<String, String>> tableTypeView, List<String> segmentNames) { + Map<String, Map<String, String>> tableTypeViewResult = new HashMap<>(); + for (String segmentName : segmentNames) { + Map<String, String> segmentView = tableTypeView.get(segmentName); + if (segmentView != null) { + tableTypeViewResult.put(segmentName, segmentView); + } + } + return tableTypeViewResult; + } + + public static Map<String, Map<String, String>> getStateMap(TableView view) { + if (view != null && view._offline != null && !view._offline.isEmpty()) { + return view._offline; + } else if (view != null && view._realtime != null && !view._realtime.isEmpty()) { + return view._realtime; + } else { + return new HashMap<>(); + } + } + + public static boolean isErrorSegment(Map<String, String> stateMap) { + return stateMap.values().contains(CommonConstants.Helix.StateModel.SegmentStateModel.ERROR); + } + + public static boolean isOnlineOrConsumingSegment(Map<String, String> stateMap) { + return stateMap.values().stream().allMatch( + state -> state.equals(CommonConstants.Helix.StateModel.SegmentStateModel.CONSUMING) || state.equals( + CommonConstants.Helix.StateModel.SegmentStateModel.ONLINE)); + } + + public static boolean isOfflineSegment(Map<String, String> stateMap) { + return stateMap.values().contains(CommonConstants.Helix.StateModel.SegmentStateModel.OFFLINE); + } + + // we use name "view" to closely match underlying names and to not + // confuse with table state of enable/disable + public static TableView getTableState(String tableName, String view, @Nullable TableType tableType, + HelixAdmin helixAdmin, String helixClusterName) + throws Exception { + TableView tableView = null; + if (view.equalsIgnoreCase(IDEALSTATE)) { + tableView = getTableIdealState(tableName, tableType, helixAdmin, helixClusterName); + } else if (view.equalsIgnoreCase(EXTERNALVIEW)) { + tableView = getTableExternalView(tableName, tableType, helixAdmin, helixClusterName); + } else { + throw new Exception("Bad view name, expected ideal state of external view"); Review Comment: lets log the view name in the exception msg -- This is an automated message from the Apache Git Service. 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