| /* |
| * 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.camel.component.kubernetes.cluster.lock; |
| |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.Set; |
| |
| import io.fabric8.kubernetes.api.model.ConfigMap; |
| import io.fabric8.kubernetes.api.model.ConfigMapBuilder; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Utilities for managing ConfigMaps that contain lock information. |
| */ |
| public final class ConfigMapLockUtils { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ConfigMapLockUtils.class); |
| |
| private static final String DATE_TIME_FORMAT = "yyyy-MM-dd'T'HH:mm:ssX"; |
| |
| private static final String LEADER_PREFIX = "leader.pod."; |
| |
| private static final String LOCAL_TIMESTAMP_PREFIX = "leader.local.timestamp."; |
| |
| private ConfigMapLockUtils() { |
| } |
| |
| public static ConfigMap createNewConfigMap(String configMapName, LeaderInfo leaderInfo) { |
| return new ConfigMapBuilder().withNewMetadata().withName(configMapName).addToLabels("provider", "camel").addToLabels("kind", "locks").endMetadata() |
| .addToData(LEADER_PREFIX + leaderInfo.getGroupName(), leaderInfo.getLeader()) |
| .addToData(LOCAL_TIMESTAMP_PREFIX + leaderInfo.getGroupName(), formatDate(leaderInfo.getLocalTimestamp())).build(); |
| } |
| |
| public static ConfigMap getConfigMapWithNewLeader(ConfigMap configMap, LeaderInfo leaderInfo) { |
| return new ConfigMapBuilder(configMap).addToData(LEADER_PREFIX + leaderInfo.getGroupName(), leaderInfo.getLeader()) |
| .addToData(LOCAL_TIMESTAMP_PREFIX + leaderInfo.getGroupName(), formatDate(leaderInfo.getLocalTimestamp())).build(); |
| } |
| |
| public static LeaderInfo getLeaderInfo(ConfigMap configMap, Set<String> members, String group) { |
| return new LeaderInfo(group, getLeader(configMap, group), getLocalTimestamp(configMap, group), members); |
| } |
| |
| private static String getLeader(ConfigMap configMap, String group) { |
| return getConfigMapValue(configMap, LEADER_PREFIX + group); |
| } |
| |
| private static String formatDate(Date date) { |
| if (date == null) { |
| return null; |
| } |
| try { |
| return new SimpleDateFormat(DATE_TIME_FORMAT).format(date); |
| } catch (Exception e) { |
| LOG.warn("Unable to format date '" + date + "' using format " + DATE_TIME_FORMAT, e); |
| } |
| |
| return null; |
| } |
| |
| private static Date getLocalTimestamp(ConfigMap configMap, String group) { |
| String timestamp = getConfigMapValue(configMap, LOCAL_TIMESTAMP_PREFIX + group); |
| if (timestamp == null) { |
| return null; |
| } |
| |
| try { |
| return new SimpleDateFormat(DATE_TIME_FORMAT).parse(timestamp); |
| } catch (Exception e) { |
| LOG.warn("Unable to parse time string '" + timestamp + "' using format " + DATE_TIME_FORMAT, e); |
| } |
| |
| return null; |
| } |
| |
| private static String getConfigMapValue(ConfigMap configMap, String key) { |
| if (configMap == null || configMap.getData() == null) { |
| return null; |
| } |
| return configMap.getData().get(key); |
| } |
| |
| } |