Jonathan Hart | aa38097 | 2014-04-03 10:24:46 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.intent; |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 2 | |
| 3 | import java.util.Collection; |
| 4 | import java.util.EventListener; |
| 5 | import java.util.HashMap; |
| 6 | import java.util.HashSet; |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 7 | import java.util.LinkedList; |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 8 | import java.util.Map.Entry; |
| 9 | |
Jonathan Hart | aa38097 | 2014-04-03 10:24:46 -0700 | [diff] [blame] | 10 | import net.onrc.onos.core.intent.Intent.IntentState; |
| 11 | import net.onrc.onos.core.intent.runtime.IntentStateList; |
Ray Milkey | 0b122ed | 2014-04-14 10:06:03 -0700 | [diff] [blame] | 12 | import org.slf4j.Logger; |
| 13 | import org.slf4j.LoggerFactory; |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 14 | |
| 15 | /** |
| 16 | * @author Toshio Koide (t-koide@onlab.us) |
| 17 | */ |
| 18 | public class IntentMap { |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 19 | private HashSet<ChangedListener> listeners = new HashSet<>(); |
| 20 | private HashMap<String, Intent> intents = new HashMap<>(); |
| 21 | private LinkedList<ChangedEvent> events = new LinkedList<>(); |
Ray Milkey | 0b122ed | 2014-04-14 10:06:03 -0700 | [diff] [blame] | 22 | private static final Logger log = LoggerFactory.getLogger(IntentMap.class); |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 23 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 24 | public enum ChangedEventType { |
| 25 | /** |
| 26 | * Added new intent. |
| 27 | */ |
| 28 | ADDED, |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 29 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 30 | /** |
| 31 | * Removed existing intent. |
| 32 | * The specified intent is an instance of Intent class (not a child class) |
| 33 | * Only id and state are valid. |
| 34 | */ |
| 35 | REMOVED, |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 36 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 37 | /** |
| 38 | * Changed state of existing intent. |
| 39 | * The specified intent is an instance of Intent class (not a child class) |
| 40 | * Only id and state are valid. |
| 41 | */ |
| 42 | STATE_CHANGED, |
| 43 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 44 | |
Pavlin Radoslavov | fee8098 | 2014-04-10 12:12:04 -0700 | [diff] [blame] | 45 | public static class ChangedEvent { |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 46 | public ChangedEvent(ChangedEventType eventType, Intent intent) { |
| 47 | this.eventType = eventType; |
| 48 | this.intent = intent; |
| 49 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 50 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 51 | public ChangedEventType eventType; |
| 52 | public Intent intent; |
Pavlin Radoslavov | b630929 | 2014-04-11 03:25:47 -0700 | [diff] [blame] | 53 | |
| 54 | /** |
| 55 | * Get a string representation of the object. |
| 56 | * <p/> |
| 57 | * The string has the following form: |
| 58 | * [eventType=XXX intent=XXX] |
| 59 | * |
| 60 | * @return a string representation of the object. |
| 61 | */ |
| 62 | @Override |
| 63 | public String toString() { |
| 64 | StringBuilder ret = new StringBuilder(); |
| 65 | ret.append("[eventType="); |
| 66 | ret.append(this.eventType.toString()); |
| 67 | ret.append(" intent="); |
| 68 | ret.append(this.intent.toString()); |
| 69 | ret.append("]"); |
| 70 | return ret.toString(); |
| 71 | } |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 72 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 73 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 74 | public interface ChangedListener extends EventListener { |
| 75 | void intentsChange(LinkedList<ChangedEvent> events); |
| 76 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 77 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 78 | //================================================================================ |
| 79 | // public methods |
| 80 | //================================================================================ |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 81 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 82 | public void executeOperations(IntentOperationList operations) { |
| 83 | for (IntentOperation operation : operations) { |
| 84 | switch (operation.operator) { |
| 85 | case ADD: |
| 86 | handleAddOperation(operation); |
| 87 | break; |
| 88 | case REMOVE: |
| 89 | handleRemoveOperation(operation); |
| 90 | break; |
| 91 | case ERROR: |
| 92 | handleErrorOperation(operation); |
| 93 | break; |
Ray Milkey | 0b122ed | 2014-04-14 10:06:03 -0700 | [diff] [blame] | 94 | default: |
| 95 | log.error("Unknown intent operation {}", operation.operator); |
| 96 | break; |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 97 | } |
| 98 | } |
| 99 | notifyEvents(); |
| 100 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 101 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 102 | public void purge() { |
| 103 | LinkedList<String> removeIds = new LinkedList<>(); |
| 104 | for (Entry<String, Intent> entry : intents.entrySet()) { |
| 105 | Intent intent = entry.getValue(); |
| 106 | if (intent.getState() == IntentState.DEL_ACK |
| 107 | || intent.getState() == IntentState.INST_NACK) { |
| 108 | removeIds.add(intent.getId()); |
| 109 | } |
| 110 | } |
| 111 | for (String intentId : removeIds) { |
| 112 | removeIntent(intentId); |
| 113 | } |
| 114 | notifyEvents(); |
| 115 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 116 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 117 | public void changeStates(IntentStateList states) { |
| 118 | for (Entry<String, IntentState> state : states.entrySet()) { |
| 119 | setState(state.getKey(), state.getValue()); |
| 120 | } |
| 121 | notifyEvents(); |
| 122 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 123 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 124 | public Intent getIntent(String intentId) { |
| 125 | return intents.get(intentId); |
| 126 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 127 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 128 | public Collection<Intent> getAllIntents() { |
| 129 | return intents.values(); |
| 130 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 131 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 132 | public void addChangeListener(ChangedListener listener) { |
| 133 | listeners.add(listener); |
| 134 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 135 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 136 | public void removeChangedListener(ChangedListener listener) { |
| 137 | listeners.remove(listener); |
| 138 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 139 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 140 | //================================================================================ |
| 141 | // methods that affect intents map (protected) |
| 142 | //================================================================================ |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 143 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 144 | protected void putIntent(Intent intent) { |
Ray Milkey | b29e626 | 2014-04-09 16:02:14 -0700 | [diff] [blame] | 145 | if (intents.containsKey(intent.getId())) { |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 146 | removeIntent(intent.getId()); |
Ray Milkey | b29e626 | 2014-04-09 16:02:14 -0700 | [diff] [blame] | 147 | } |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 148 | intents.put(intent.getId(), intent); |
| 149 | events.add(new ChangedEvent(ChangedEventType.ADDED, intent)); |
| 150 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 151 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 152 | protected void removeIntent(String intentId) { |
| 153 | Intent intent = intents.remove(intentId); |
Ray Milkey | b29e626 | 2014-04-09 16:02:14 -0700 | [diff] [blame] | 154 | if (intent == null) { |
| 155 | return; |
| 156 | } |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 157 | events.add(new ChangedEvent(ChangedEventType.REMOVED, intent)); |
| 158 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 159 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 160 | protected void setState(String intentId, IntentState state) { |
| 161 | Intent intent = intents.get(intentId); |
Ray Milkey | b29e626 | 2014-04-09 16:02:14 -0700 | [diff] [blame] | 162 | if (intent == null) { |
| 163 | return; |
| 164 | } |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 165 | intent.setState(state); |
| 166 | events.add(new ChangedEvent(ChangedEventType.STATE_CHANGED, intent)); |
| 167 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 168 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 169 | //================================================================================ |
| 170 | // helper methods (protected) |
| 171 | //================================================================================ |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 172 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 173 | protected void handleAddOperation(IntentOperation operation) { |
| 174 | putIntent(operation.intent); |
| 175 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 176 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 177 | protected void handleRemoveOperation(IntentOperation operation) { |
| 178 | Intent intent = getIntent(operation.intent.getId()); |
| 179 | if (intent == null) { |
| 180 | // TODO error handling |
Ray Milkey | 1aa71f8 | 2014-04-08 16:23:24 -0700 | [diff] [blame] | 181 | return; |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 182 | } else { |
| 183 | setState(intent.getId(), IntentState.DEL_REQ); |
| 184 | } |
| 185 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 186 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 187 | protected void handleErrorOperation(IntentOperation operation) { |
| 188 | //TODO put error message into the intent |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 189 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 190 | ErrorIntent errorIntent = (ErrorIntent) operation.intent; |
| 191 | Intent targetIntent = intents.get(errorIntent.getId()); |
| 192 | if (targetIntent == null) { |
| 193 | // TODO error handling |
| 194 | return; |
| 195 | } |
Toshio Koide | df2eab9 | 2014-02-20 11:24:59 -0800 | [diff] [blame] | 196 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 197 | switch (targetIntent.getState()) { |
| 198 | case CREATED: |
| 199 | case INST_REQ: |
| 200 | case INST_ACK: |
| 201 | case REROUTE_REQ: |
| 202 | setState(targetIntent.getId(), IntentState.INST_NACK); |
| 203 | break; |
| 204 | case DEL_REQ: |
| 205 | setState(targetIntent.getId(), IntentState.DEL_PENDING); |
| 206 | break; |
| 207 | case INST_NACK: |
| 208 | case DEL_PENDING: |
| 209 | case DEL_ACK: |
| 210 | // do nothing |
| 211 | break; |
Ray Milkey | 0b122ed | 2014-04-14 10:06:03 -0700 | [diff] [blame] | 212 | default: |
| 213 | log.error("Unknown intent state {}", targetIntent.getState()); |
| 214 | break; |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 215 | } |
| 216 | } |
| 217 | |
| 218 | protected void notifyEvents() { |
| 219 | for (ChangedListener listener : listeners) { |
| 220 | listener.intentsChange(events); |
| 221 | } |
| 222 | events.clear(); |
| 223 | } |
Toshio Koide | b609b3b | 2014-02-14 18:25:52 -0800 | [diff] [blame] | 224 | } |