chengfan | c5a99dc | 2017-01-08 19:28:29 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | |
| 18 | package org.onosproject.ui.impl; |
| 19 | |
| 20 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 21 | import com.google.common.collect.ImmutableSet; |
| 22 | import org.onosproject.store.primitives.PartitionAdminService; |
| 23 | import org.onosproject.store.service.PartitionInfo; |
| 24 | import org.onosproject.ui.RequestHandler; |
| 25 | import org.onosproject.ui.UiMessageHandler; |
| 26 | import org.onosproject.ui.table.CellFormatter; |
| 27 | import org.onosproject.ui.table.TableModel; |
| 28 | import org.onosproject.ui.table.TableRequestHandler; |
| 29 | |
| 30 | import java.util.Collection; |
| 31 | import java.util.List; |
| 32 | |
| 33 | /** |
| 34 | * Message handler for partition view related messages. |
| 35 | */ |
| 36 | public class PartitionViewMessageHandler extends UiMessageHandler { |
| 37 | private static final String PARTITION_DATA_REQ = "partitionDataRequest"; |
| 38 | private static final String PARTITION_DATA_RESP = "partitionDataResponse"; |
| 39 | private static final String PARTITIONS = "partitions"; |
| 40 | |
| 41 | private static final String NAME = "name"; |
| 42 | private static final String TERM = "term"; |
| 43 | private static final String LEADER = "leader"; |
| 44 | private static final String MEMBERS = "members"; |
| 45 | |
| 46 | private static final String[] COL_IDS = {NAME, TERM, LEADER, MEMBERS}; |
| 47 | |
| 48 | @Override |
| 49 | protected Collection<RequestHandler> createRequestHandlers() { |
| 50 | return ImmutableSet.of(new PartitionDataHandler()); |
| 51 | } |
| 52 | |
| 53 | private final class PartitionDataHandler extends TableRequestHandler { |
| 54 | private static final String NO_ROWS_MESSAGE = "No partitions found"; |
| 55 | |
| 56 | private PartitionDataHandler() { |
| 57 | super(PARTITION_DATA_REQ, PARTITION_DATA_RESP, PARTITIONS); |
| 58 | } |
| 59 | |
| 60 | @Override |
| 61 | protected String[] getColumnIds() { |
| 62 | return COL_IDS; |
| 63 | } |
| 64 | |
| 65 | @Override |
| 66 | protected String noRowsMessage(ObjectNode payload) { |
| 67 | return NO_ROWS_MESSAGE; |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | protected String defaultColumnId() { |
| 72 | return NAME; |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | protected TableModel createTableModel() { |
| 77 | TableModel tm = super.createTableModel(); |
| 78 | tm.setFormatter(MEMBERS, new MembersFormatter()); |
| 79 | return tm; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | protected void populateTable(TableModel tm, ObjectNode payload) { |
| 84 | PartitionAdminService ps = get(PartitionAdminService.class); |
| 85 | for (PartitionInfo partition : ps.partitionInfo()) { |
| 86 | populateRow(tm.addRow(), partition); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | private void populateRow(TableModel.Row row, PartitionInfo p) { |
| 91 | row.cell(NAME, p.name()) |
| 92 | .cell(TERM, p.term()) |
| 93 | .cell(LEADER, p.leader()) |
| 94 | .cell(MEMBERS, p.members()); |
| 95 | } |
| 96 | |
| 97 | private final class MembersFormatter implements CellFormatter { |
| 98 | private static final String COMMA = ", "; |
| 99 | |
| 100 | @Override |
| 101 | public String format(Object value) { |
| 102 | List<String> members = (List<String>) value; |
| 103 | if (members.isEmpty()) { |
| 104 | return "(No members for this partition)"; |
| 105 | } |
| 106 | StringBuilder sb = new StringBuilder(); |
| 107 | for (String m : members) { |
| 108 | sb.append(m).append(COMMA); |
| 109 | } |
| 110 | removeTrailingComma(sb); |
| 111 | |
| 112 | return sb.toString(); |
| 113 | } |
| 114 | |
| 115 | private StringBuilder removeTrailingComma(StringBuilder sb) { |
| 116 | int pos = sb.lastIndexOf(COMMA); |
| 117 | sb.delete(pos, sb.length()); |
| 118 | return sb; |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | } |