[97] | 1 | package com.framsticks.remote; |
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| 2 | |
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| 3 | import com.framsticks.communication.*; |
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| 4 | import com.framsticks.communication.queries.CallRequest; |
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| 5 | import com.framsticks.communication.queries.GetRequest; |
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| 6 | import com.framsticks.communication.queries.InfoRequest; |
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| 7 | import com.framsticks.communication.queries.SetRequest; |
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| 8 | import com.framsticks.core.AbstractTree; |
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| 9 | import com.framsticks.core.Mode; |
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| 10 | import com.framsticks.core.TreeOperations; |
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| 11 | import com.framsticks.core.ListChange; |
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| 12 | import com.framsticks.core.Node; |
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| 13 | import com.framsticks.core.Path; |
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| 14 | import com.framsticks.params.*; |
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| 15 | import com.framsticks.params.annotations.AutoAppendAnnotation; |
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| 16 | import com.framsticks.params.annotations.FramsClassAnnotation; |
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| 17 | import com.framsticks.params.annotations.ParamAnnotation; |
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| 18 | import com.framsticks.params.types.EventParam; |
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| 19 | import com.framsticks.params.types.ProcedureParam; |
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| 20 | import com.framsticks.parsers.MultiParamLoader; |
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| 21 | import com.framsticks.core.Tree; |
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| 22 | import com.framsticks.util.*; |
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| 23 | import com.framsticks.util.dispatching.Dispatching; |
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| 24 | import com.framsticks.util.dispatching.Future; |
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| 25 | import com.framsticks.util.dispatching.FutureHandler; |
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| 26 | import com.framsticks.util.dispatching.Joinable; |
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| 27 | import com.framsticks.util.dispatching.JoinableParent; |
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| 28 | import com.framsticks.util.dispatching.JoinableState; |
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| 29 | import com.framsticks.util.lang.Casting; |
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| 30 | import com.framsticks.util.lang.Pair; |
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| 31 | import com.framsticks.util.dispatching.RunAt; |
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| 32 | import static com.framsticks.core.TreeOperations.*; |
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| 33 | |
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| 34 | import java.util.*; |
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| 35 | |
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| 36 | import javax.annotation.Nonnull; |
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| 37 | |
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| 38 | import org.apache.log4j.Logger; |
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| 39 | |
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| 40 | /** |
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| 41 | * @author Piotr Sniegowski |
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| 42 | */ |
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| 43 | @FramsClassAnnotation |
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| 44 | public class RemoteTree extends AbstractTree implements JoinableParent { |
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| 45 | |
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| 46 | private final static Logger log = Logger.getLogger(RemoteTree.class); |
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| 47 | |
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| 48 | protected ClientSideManagedConnection connection; |
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| 49 | |
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| 50 | protected final Set<Pair<Path, Subscription<?>>> subscriptions = new HashSet<>(); |
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| 51 | |
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| 52 | public Pair<Path, Subscription<?>> getSubscription(Path path) { |
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| 53 | for (Pair<Path, Subscription<?>> s : subscriptions) { |
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| 54 | if (s.first.matches(path)) { |
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| 55 | return s; |
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| 56 | } |
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| 57 | } |
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| 58 | return null; |
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| 59 | } |
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| 60 | |
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| 61 | public RemoteTree() { |
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| 62 | } |
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| 63 | |
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| 64 | @ParamAnnotation |
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| 65 | public void setAddress(String address) { |
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| 66 | setConnection(Connection.to(new ClientSideManagedConnection(), new Address(address))); |
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| 67 | } |
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| 68 | |
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| 69 | @ParamAnnotation |
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| 70 | public String getAddress() { |
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| 71 | return connection == null ? "<disconnected>" : connection.getAddress().toString(); |
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| 72 | } |
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| 73 | |
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| 74 | @AutoAppendAnnotation |
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| 75 | public void setConnection(final ClientSideManagedConnection connection) { |
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| 76 | this.connection = connection; |
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| 77 | // final ExceptionResultHandler failure = new ExceptionResultHandler() { |
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| 78 | // @Override |
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| 79 | // public void handle(FramsticksException exception) { |
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| 80 | // log.fatal("failed to establish connection: ", exception); |
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| 81 | // // log.fatal("unsupported protocol version!\n minimal version is: " + "\nmanager protocol is: " + connection.getProtocolVersion()); |
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| 82 | // Dispatching.drop(connection, RemoteTree.this); |
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| 83 | // fireRun(exception); |
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| 84 | // } |
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| 85 | // }; |
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| 86 | |
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| 87 | } |
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| 88 | |
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| 89 | @Override |
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| 90 | public String toString() { |
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| 91 | assert Dispatching.isThreadSafe(); |
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| 92 | return "remote tree " + getName() + "(" + getAddress() + ")"; |
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| 93 | } |
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| 94 | |
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| 95 | public final ClientSideManagedConnection getConnection() { |
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| 96 | return connection; |
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| 97 | } |
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| 98 | |
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| 99 | @Override |
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| 100 | public void get(final Path path, final PrimitiveParam<?> param, Mode mode, final Future<Object> future) { |
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| 101 | assert isActive(); |
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| 102 | assert param != null; |
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| 103 | assert path.isResolved(); |
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| 104 | //TODO only do that if needed |
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| 105 | connection.send(new GetRequest().field(param.getId()).path(path.getTextual()), this, new ClientSideResponseFuture(future) { |
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| 106 | @Override |
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| 107 | protected void processOk(Response response) { |
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| 108 | assert isActive(); |
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| 109 | TreeOperations.processFetchedValues(path, response.getFiles()); |
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| 110 | future.pass(bindAccess(path).get(param, Object.class)); |
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| 111 | } |
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| 112 | }); |
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| 113 | } |
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| 114 | |
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| 115 | protected final Map<String, Set<Future<FramsClass>>> infoRequests = new HashMap<String, Set<Future<FramsClass>>>(); |
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| 116 | |
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| 117 | |
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| 118 | @Override |
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| 119 | public void info(final Path path, final Future<FramsClass> future) { |
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| 120 | |
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| 121 | final String name = path.getTop().getParam().getContainedTypeName(); |
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| 122 | |
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| 123 | if (infoRequests.containsKey(name)) { |
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| 124 | infoRequests.get(name).add(future); |
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| 125 | return; |
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| 126 | } |
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| 127 | |
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| 128 | log.debug("issuing info request for " + name); |
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| 129 | final Set<Future<FramsClass>> futures = new HashSet<Future<FramsClass>>(); |
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| 130 | futures.add(future); |
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| 131 | infoRequests.put(name, futures); |
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| 132 | |
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| 133 | final Future<FramsClass> compositeFuture = new Future<FramsClass>() { |
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| 134 | |
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| 135 | @Override |
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| 136 | public void handle(FramsticksException exception) { |
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| 137 | assert isActive(); |
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| 138 | infoRequests.remove(name); |
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| 139 | for (Future<FramsClass> f : futures) { |
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| 140 | f.handle(exception); |
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| 141 | } |
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| 142 | } |
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| 143 | |
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| 144 | @Override |
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| 145 | protected void result(FramsClass framsClass) { |
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| 146 | assert isActive(); |
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| 147 | infoRequests.remove(name); |
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| 148 | for (Future<FramsClass> f : futures) { |
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| 149 | f.pass(framsClass); |
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| 150 | } |
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| 151 | } |
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| 152 | }; |
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| 153 | |
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| 154 | //TODO: if the info is in the cache, then don't communicate |
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| 155 | connection.send(new InfoRequest().path(path.getTextual()), this, new ClientSideResponseFuture(compositeFuture) { |
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| 156 | @Override |
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| 157 | protected void processOk(Response response) { |
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| 158 | assert isActive(); |
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| 159 | |
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| 160 | if (response.getFiles().size() != 1) { |
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| 161 | throw new FramsticksException().msg("invalid number of files in response").arg("files", response.getFiles().size()); |
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| 162 | } |
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| 163 | if (!path.isTheSame(response.getFiles().get(0).getPath())) { |
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| 164 | throw new FramsticksException().msg("path mismatch").arg("returned path", response.getFiles().get(0).getPath()); |
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| 165 | } |
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| 166 | FramsClass framsClass = TreeOperations.processFetchedInfo(RemoteTree.this, response.getFiles().get(0)); |
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| 167 | |
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| 168 | CompositeParam thisParam = path.getTop().getParam(); |
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| 169 | if (!thisParam.isMatchingContainedName(framsClass.getId())) { |
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| 170 | throw new FramsticksException().msg("framsclass id mismatch").arg("request", thisParam.getContainedTypeName()).arg("fetched", framsClass.getId()); |
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| 171 | } |
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| 172 | compositeFuture.pass(framsClass); |
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| 173 | } |
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| 174 | }); |
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| 175 | } |
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| 176 | |
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| 177 | @Override |
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| 178 | public void get(final Path path, Mode mode, final Future<Object> future) { |
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| 179 | assert isActive(); |
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| 180 | assert path.getTop().getObject() != null; |
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| 181 | |
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| 182 | log.trace("fetching values for " + path); |
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| 183 | connection.send(new GetRequest().path(path.getTextual()), this, new ClientSideResponseFuture(future) { |
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| 184 | @Override |
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| 185 | protected void processOk(Response response) { |
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| 186 | assert isActive(); |
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| 187 | TreeOperations.processFetchedValues(path, response.getFiles()); |
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| 188 | future.pass(path.getTopObject()); |
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| 189 | } |
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| 190 | }); |
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| 191 | } |
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| 192 | |
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| 193 | @Override |
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| 194 | public void resolve(final Path path, final Future<Path> future) { |
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| 195 | TreeOperations.resolve(path, future); |
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| 196 | } |
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| 197 | |
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| 198 | @Override |
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| 199 | protected void tryRegisterOnChangeEvents(final Path path) { |
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| 200 | assert isActive(); |
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| 201 | AccessInterface access = TreeOperations.bindAccess(path); |
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| 202 | if (!(access instanceof ListAccess)) { |
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| 203 | return; |
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| 204 | } |
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| 205 | |
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| 206 | assert path.size() >= 2; |
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| 207 | FramsClass underFramsClass = getInfoFromCache(path.getUnder().getParam().getContainedTypeName()); |
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| 208 | |
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| 209 | EventParam changedEvent; |
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| 210 | try { |
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| 211 | changedEvent = underFramsClass.getParamEntry(path.getTop().getParam().getId() + "_changed", EventParam.class); |
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| 212 | } catch (FramsticksException e) { |
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| 213 | return; |
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| 214 | } |
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| 215 | |
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| 216 | log.debug("registering for " + changedEvent); |
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| 217 | if (getSubscription(path) != null) { |
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| 218 | return; |
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| 219 | } |
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| 220 | |
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| 221 | final Pair<Path, Subscription<?>> temporary = new Pair<>(path, null); |
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| 222 | subscriptions.add(temporary); |
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| 223 | |
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| 224 | connection.subscribe(path.getTextual() + "_changed", this, new SubscriptionCallback<Tree>() { |
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| 225 | @Override |
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| 226 | public EventCallback subscribed(final Subscription<? super Tree> subscription) { |
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| 227 | if (subscription == null) { |
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| 228 | log.error("failed to subscribe for change event for " + path); |
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| 229 | return null; |
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| 230 | } |
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| 231 | log.debug("subscribed for change event for " + path); |
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| 232 | // subscription.setDispatcher(RemoteInstance.this); |
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| 233 | RemoteTree.this.dispatch(new RunAt<Tree>(this) { |
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| 234 | @Override |
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| 235 | protected void runAt() { |
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| 236 | subscriptions.remove(temporary); |
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| 237 | subscriptions.add(new Pair<Path, Subscription<?>>(path, subscription)); |
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| 238 | } |
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| 239 | }); |
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| 240 | return new EventCallback() { |
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| 241 | @Override |
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| 242 | public void call(List<File> files) { |
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| 243 | assert isActive(); |
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| 244 | assert files.size() == 1; |
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| 245 | final MultiParamLoader loader = new MultiParamLoader(); |
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| 246 | loader.setNewSource(files.get(0).getContent()); |
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| 247 | loader.addBreakCondition(MultiParamLoader.Status.AfterObject); |
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| 248 | loader.addListener(MultiParamLoader.Status.OnComment, new MultiParamLoader.StatusListener() { |
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| 249 | |
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| 250 | @Override |
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| 251 | public void onStatusChange() { |
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| 252 | throw new FramsticksException().msg("multi param loader error").arg("line", loader.getCurrentLine()); |
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| 253 | } |
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| 254 | }); |
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| 255 | ReflectionAccess access = new ReflectionAccess(ListChange.class, FramsClass.build().forClass(ListChange.class)); |
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| 256 | loader.addAccessInterface(access); |
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| 257 | |
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| 258 | MultiParamLoader.Status status; |
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| 259 | while ((status = loader.go()) != MultiParamLoader.Status.Finished) { |
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| 260 | if (status == MultiParamLoader.Status.AfterObject) { |
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| 261 | AccessInterface accessInterface = loader.getLastAccessInterface(); |
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| 262 | reactToChange(path, (ListChange) accessInterface.getSelected()); |
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| 263 | } |
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| 264 | } |
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| 265 | } |
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| 266 | }; |
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| 267 | } |
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| 268 | }); |
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| 269 | } |
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| 270 | |
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| 271 | protected Future<Path> futureListChanger(final ListChange listChange, final String path) { |
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| 272 | return new FutureHandler<Path>(Logging.logger(log, "failed to " + listChange, path)) { |
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| 273 | @Override |
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| 274 | protected void result(Path result) { |
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| 275 | log.debug(listChange + ": " + result); |
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| 276 | fireListChange(result, listChange); |
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| 277 | } |
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| 278 | }; |
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| 279 | } |
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| 280 | |
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| 281 | protected void reactToChange(final Path path, final ListChange listChange) { |
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| 282 | assert isActive(); |
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| 283 | log.debug("reacting to change " + listChange + " in " + path); |
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| 284 | AccessInterface access = TreeOperations.bindAccess(path); |
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| 285 | assert access != null; |
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| 286 | |
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| 287 | if ((listChange.getAction() == ListChange.Action.Modify) && (listChange.getPosition() == -1)) { |
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| 288 | final String p = path.getTextual(); |
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| 289 | TreeOperations.resolveAndGet(this, p, futureListChanger(listChange, p)); |
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| 290 | return; |
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| 291 | } |
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| 292 | |
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| 293 | CompositeParam childParam = Casting.tryCast(CompositeParam.class, access.getParam(listChange.getBestIdentifier())); |
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| 294 | assert childParam != null; |
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| 295 | switch (listChange.getAction()) { |
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| 296 | case Add: { |
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| 297 | final String p = path.getTextual() + "/" + childParam.getId(); |
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| 298 | TreeOperations.resolveAndGet(this, p, futureListChanger(listChange, p)); |
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| 299 | break; |
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| 300 | } |
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| 301 | case Remove: { |
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| 302 | access.set(childParam, null); |
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| 303 | fireListChange(path, listChange); |
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| 304 | break; |
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| 305 | } |
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| 306 | case Modify: { |
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| 307 | final String p = path.getTextual() + "/" + childParam.getId(); |
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| 308 | TreeOperations.resolveAndGet(this, p, futureListChanger(listChange, p)); |
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| 309 | break; |
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| 310 | } |
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| 311 | } |
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| 312 | } |
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| 313 | |
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| 314 | @Override |
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| 315 | public void set(final Path path, final PrimitiveParam<?> param, final Object value, final Future<Integer> future) { |
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| 316 | assert isActive(); |
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| 317 | final Integer flag = TreeOperations.bindAccess(path).set(param, value); |
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| 318 | |
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| 319 | log.trace("storing value " + param + " for " + path); |
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| 320 | //TODO break in passing exception handler is here |
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| 321 | connection.send(new SetRequest().value(value.toString()).field(param.getId()).path(path.getTextual()), this, new ClientSideResponseFuture(future) { |
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| 322 | @Override |
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| 323 | protected void processOk(Response response) { |
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| 324 | future.pass(flag); |
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| 325 | } |
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| 326 | }); |
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| 327 | } |
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| 328 | |
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| 329 | @Override |
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| 330 | protected void joinableStart() { |
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| 331 | Dispatching.use(connection, this); |
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| 332 | super.joinableStart(); |
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| 333 | } |
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| 334 | |
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| 335 | @Override |
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| 336 | protected void joinableInterrupt() { |
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| 337 | Dispatching.drop(connection, this); |
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| 338 | super.joinableInterrupt(); |
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| 339 | } |
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| 340 | |
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| 341 | @Override |
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| 342 | protected void joinableFinish() { |
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| 343 | super.joinableFinish(); |
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| 344 | |
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| 345 | } |
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| 346 | |
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| 347 | @Override |
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| 348 | public void joinableJoin() throws InterruptedException { |
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| 349 | Dispatching.join(connection); |
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| 350 | super.joinableJoin(); |
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| 351 | } |
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| 352 | |
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| 353 | @Override |
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| 354 | public void childChangedState(Joinable joinable, JoinableState state) { |
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| 355 | proceedToState(state); |
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| 356 | } |
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| 357 | |
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| 358 | @Override |
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| 359 | public void call(@Nonnull final Path path, @Nonnull final ProcedureParam procedure, @Nonnull Object[] arguments, final Future<Object> future) { |
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| 360 | assert isActive(); |
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| 361 | assert path.isResolved(); |
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| 362 | |
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| 363 | //TODO validate arguments type using params |
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| 364 | connection.send(new CallRequest().procedure(procedure.getId()).arguments(Arrays.asList(arguments)).path(path.getTextual()), this, new ClientSideResponseFuture(future) { |
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| 365 | @Override |
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| 366 | protected void processOk(Response response) { |
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| 367 | assert isActive(); |
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| 368 | // InstanceUtils.processFetchedValues(path, response.getFiles()); |
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| 369 | future.pass(null); |
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| 370 | } |
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| 371 | }); |
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| 372 | |
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| 373 | } |
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| 374 | |
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| 375 | @Override |
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| 376 | public Path create(Path path) { |
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| 377 | assert isActive(); |
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| 378 | assert !path.isResolved(); |
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| 379 | Path resolved = path.tryFindResolution(); |
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| 380 | if (!resolved.isResolved()) { |
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| 381 | log.debug("creating: " + path); |
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| 382 | AccessInterface access = registry.prepareAccess(path.getTop().getParam()); |
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| 383 | assert access != null; |
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| 384 | Object child = access.createAccessee(); |
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| 385 | assert child != null; |
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| 386 | if (path.size() == 1) { |
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| 387 | setRoot(new Node(getRoot().getParam(), child)); |
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| 388 | } else { |
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| 389 | bindAccess(this, path.getUnder()).set(path.getTop().getParam(), child); |
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| 390 | } |
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| 391 | resolved = path.appendResolution(child); |
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| 392 | } |
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| 393 | tryRegisterOnChangeEvents(resolved); |
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| 394 | return resolved; |
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| 395 | } |
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| 396 | |
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| 397 | } |
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