Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015-present Open Networking Foundation |
| 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 | package org.onosproject.cli2.app; |
| 17 | |
| 18 | import org.apache.karaf.shell.api.action.lifecycle.Service; |
| 19 | import org.apache.karaf.shell.api.console.CommandLine; |
| 20 | import org.apache.karaf.shell.api.console.Session; |
| 21 | import org.apache.karaf.shell.support.completers.StringsCompleter; |
| 22 | import org.onosproject.app.ApplicationService; |
| 23 | import org.onosproject.app.ApplicationState; |
| 24 | import org.onosproject.cli2.AbstractCompleter; |
| 25 | import org.onosproject.core.Application; |
| 26 | |
| 27 | import com.google.common.base.Strings; |
| 28 | import com.google.common.collect.Lists; |
| 29 | import org.slf4j.Logger; |
| 30 | |
| 31 | import java.util.ArrayDeque; |
| 32 | import java.util.ArrayList; |
| 33 | import java.util.Deque; |
| 34 | import java.util.Iterator; |
| 35 | import java.util.List; |
| 36 | import java.util.Map.Entry; |
| 37 | import java.util.SortedSet; |
| 38 | import java.util.stream.Collectors; |
| 39 | |
| 40 | import static java.util.Arrays.asList; |
| 41 | import static org.onosproject.app.ApplicationState.ACTIVE; |
| 42 | import static org.onosproject.app.ApplicationState.INSTALLED; |
| 43 | import static org.onosproject.cli2.AbstractShellCommand.get; |
| 44 | import static org.slf4j.LoggerFactory.getLogger; |
| 45 | |
| 46 | /** |
| 47 | * Application name completer. |
| 48 | */ |
| 49 | @Service |
| 50 | public class ApplicationNameCompleter extends AbstractCompleter { |
| 51 | private static final Logger log = getLogger(ApplicationNameCompleter.class); |
| 52 | |
| 53 | @Override |
| 54 | public int complete(Session session, CommandLine commandLine, List<String> candidates) { |
| 55 | // Delegate string completer |
| 56 | StringsCompleter delegate = new StringsCompleter(); |
| 57 | |
| 58 | // Command name is the second argument. |
| 59 | String cmd = commandLine.getArguments()[1]; |
| 60 | log.info("Command is {}", cmd); |
| 61 | |
| 62 | // Grab apps already on the command (to prevent tab-completed duplicates) |
| 63 | // FIXME: This does not work. |
| 64 | // final Set previousApps; |
| 65 | // if (list.getArguments().length > 2) { |
| 66 | // previousApps = Sets.newHashSet( |
| 67 | // Arrays.copyOfRange(list.getArguments(), 2, list.getArguments().length)); |
| 68 | // } else { |
| 69 | // previousApps = Collections.emptySet(); |
| 70 | // } |
| 71 | |
| 72 | // Fetch our service and feed it's offerings to the string completer |
| 73 | ApplicationService service = get(ApplicationService.class); |
| 74 | Iterator<Application> it = service.getApplications().iterator(); |
| 75 | SortedSet<String> strings = delegate.getStrings(); |
| 76 | int c = 0; |
| 77 | log.info("Processing apps"); |
| 78 | while (it.hasNext()) { |
| 79 | Application app = it.next(); |
| 80 | log.info("app #{} is {}", c, app.id().name()); |
| 81 | c++; |
| 82 | ApplicationState state = service.getState(app.id()); |
| 83 | // if (previousApps.contains(app.id().name())) { |
| 84 | // continue; |
| 85 | // } |
| 86 | if ("uninstall".equals(cmd) || "download".equals(cmd) || |
| 87 | ("activate".equals(cmd) && state == INSTALLED) || |
| 88 | ("deactivate".equals(cmd) && state == ACTIVE)) { |
| 89 | strings.add(app.id().name()); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | // add unique suffix to candidates, if user has something in buffer |
| 94 | log.info("Command line buffer {} position {}", commandLine.getBuffer(), commandLine.getBufferPosition()); |
| 95 | if (!commandLine.getBuffer().endsWith(cmd)) { |
| 96 | List<String> suffixCandidates = strings.stream() |
| 97 | // remove onos common prefix |
| 98 | .map(full -> full.replaceFirst("org\\.onosproject\\.", "")) |
| 99 | // a.b.c -> [c, b.c, a.b.c] |
| 100 | .flatMap(appName -> { |
| 101 | List<String> suffixes = new ArrayList<>(); |
| 102 | Deque<String> frags = new ArrayDeque<>(); |
| 103 | // a.b.c -> [c, b, a] -> [c, b.c, a.b.c] |
| 104 | Lists.reverse(asList(appName.split("\\."))).forEach(frag -> { |
| 105 | frags.addFirst(frag); |
| 106 | suffixes.add(frags.stream().collect(Collectors.joining("."))); |
| 107 | }); |
| 108 | return suffixes.stream(); |
| 109 | }) |
| 110 | // convert to occurrence map |
| 111 | .collect(Collectors.groupingBy(e -> e, Collectors.counting())) |
| 112 | .entrySet().stream() |
| 113 | // only accept unique suffix |
| 114 | .filter(e -> e.getValue() == 1L) |
| 115 | .map(Entry::getKey) |
| 116 | .collect(Collectors.toList()); |
| 117 | |
| 118 | delegate.getStrings().addAll(suffixCandidates); |
| 119 | } |
| 120 | |
| 121 | // Now let the completer do the work for figuring out what to offer. |
| 122 | return delegate.complete(session, commandLine, candidates); |
| 123 | } |
| 124 | |
| 125 | } |