src/main/java/net/pterodactylus/fcp/quelaton/ClientGetCommandImpl.java

   1 package net.pterodactylus.fcp.quelaton;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.util.Optional;
   6 import java.util.concurrent.ExecutorService;
   7 import java.util.concurrent.Future;
   8 import java.util.concurrent.atomic.AtomicBoolean;
   9
  10 import net.pterodactylus.fcp.AllData;
  11 import net.pterodactylus.fcp.ClientGet;
  12 import net.pterodactylus.fcp.FcpUtils.TempInputStream;
  13 import net.pterodactylus.fcp.GetFailed;
  14 import net.pterodactylus.fcp.Priority;
  15 import net.pterodactylus.fcp.ReturnType;
  16
  17 /**
  18  * Implementation of the {@link ClientGetCommand}.
  19  *
  20  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  21  */
  22 class ClientGetCommandImpl implements ClientGetCommand {
  23
  24         private final ExecutorService threadPool;
  25         private final ConnectionSupplier connectionSupplier;
  26
  27         private String identifier;
  28         private boolean ignoreDataStore;
  29         private boolean dataStoreOnly;
  30         private Long maxSize;
  31         private Priority priority;
  32         private boolean realTime;
  33         private boolean global;
  34
  35         public ClientGetCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  36                 this.threadPool = threadPool;
  37                 this.connectionSupplier = connectionSupplier;
  38         }
  39
  40         @Override
  41         public ClientGetCommand identifier(String identifier) {
  42                 this.identifier = identifier;
  43                 return this;
  44         }
  45
  46         @Override
  47         public ClientGetCommand ignoreDataStore() {
  48                 ignoreDataStore = true;
  49                 return this;
  50         }
  51
  52         @Override
  53         public ClientGetCommand dataStoreOnly() {
  54                 dataStoreOnly = true;
  55                 return this;
  56         }
  57
  58         @Override
  59         public ClientGetCommand maxSize(long maxSize) {
  60                 this.maxSize = maxSize;
  61                 return this;
  62         }
  63
  64         @Override
  65         public ClientGetCommand priority(Priority priority) {
  66                 this.priority = priority;
  67                 return this;
  68         }
  69
  70         @Override
  71         public ClientGetCommand realTime() {
  72                 realTime = true;
  73                 return this;
  74         }
  75
  76         @Override
  77         public ClientGetCommand global() {
  78                 global = true;
  79                 return this;
  80         }
  81
  82         @Override
  83         public Future<Optional<Data>> uri(String uri) {
  84                 ClientGet clientGet = new ClientGet(uri, identifier, ReturnType.direct);
  85                 if (ignoreDataStore) {
  86                         clientGet.setIgnoreDataStore(true);
  87                 }
  88                 if (dataStoreOnly) {
  89                         clientGet.setDataStoreOnly(true);
  90                 }
  91                 if (maxSize != null) {
  92                         clientGet.setMaxSize(maxSize);
  93                 }
  94                 if (priority != null) {
  95                         clientGet.setPriority(priority);
  96                 }
  97                 if (realTime) {
  98                         clientGet.setRealTimeFlag(true);
  99                 }
 100                 if (global) {
 101                         clientGet.setGlobal(true);
 102                 }
 103                 return threadPool.submit(() -> {
 104                         FcpReplySequence<Optional<Data>> replySequence =
 105                                 new ClientGetReplySequence();
 106                         return replySequence.send(clientGet).get();
 107                 });
 108         }
 109
 110         private class ClientGetReplySequence extends FcpReplySequence<Optional<Data>> {
 111
 112                 private final AtomicBoolean finished = new AtomicBoolean();
 113                 private final AtomicBoolean failed = new AtomicBoolean();
 114
 115                 private final String identifier = ClientGetCommandImpl.this.identifier;
 116
 117                 private String contentType;
 118                 private long dataLength;
 119                 private InputStream payload;
 120
 121                 public ClientGetReplySequence() throws IOException {
 122                         super(ClientGetCommandImpl.this.threadPool, ClientGetCommandImpl.this.connectionSupplier.get());
 123                 }
 124
 125                 @Override
 126                 protected boolean isFinished() {
 127                         return finished.get() || failed.get();
 128                 }
 129
 130                 @Override
 131                 protected Optional<Data> getResult() {
 132                         return failed.get() ? Optional.empty() : Optional.of(new Data() {
 133                                 @Override
 134                                 public String getMimeType() {
 135                                         return contentType;
 136                                 }
 137
 138                                 @Override
 139                                 public long size() {
 140                                         return dataLength;
 141                                 }
 142
 143                                 @Override
 144                                 public InputStream getInputStream() {
 145                                         return payload;
 146                                 }
 147                         });
 148                 }
 149
 150                 @Override
 151                 protected void consumeAllData(AllData allData) {
 152                         if (allData.getIdentifier().equals(identifier)) {
 153                                 synchronized (this) {
 154                                         contentType = allData.getContentType();
 155                                         dataLength = allData.getDataLength();
 156                                         try {
 157                                                 payload = new TempInputStream(allData.getPayloadInputStream(), dataLength);
 158                                                 finished.set(true);
 159                                         } catch (IOException e) {
 160                                                 // TODO – logging
 161                                                 failed.set(true);
 162                                         }
 163                                 }
 164                         }
 165                 }
 166
 167                 @Override
 168                 protected void consumeGetFailed(GetFailed getFailed) {
 169                         if (getFailed.getIdentifier().equals(identifier)) {
 170                                 failed.set(true);
 171                         }
 172                 }
 173
 174                 @Override
 175                 protected void consumeConnectionClosed(Throwable throwable) {
 176                         failed.set(true);
 177                 }
 178
 179         }
 180
 181 }