+package net.pterodactylus.fcp.quelaton;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Optional;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import net.pterodactylus.fcp.AllData;
+import net.pterodactylus.fcp.ClientGet;
+import net.pterodactylus.fcp.FcpUtils.TempInputStream;
+import net.pterodactylus.fcp.GetFailed;
+import net.pterodactylus.fcp.Priority;
+import net.pterodactylus.fcp.ReturnType;
+
+/**
+ * Implementation of the {@link ClientGetCommand}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+class ClientGetCommandImpl implements ClientGetCommand {
+
+ private final ExecutorService threadPool;
+ private final ConnectionSupplier connectionSupplier;
+
+ private String identifier;
+ private boolean ignoreDataStore;
+ private boolean dataStoreOnly;
+ private Long maxSize;
+ private Priority priority;
+ private boolean realTime;
+ private boolean global;
+
+ public ClientGetCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
+ this.threadPool = threadPool;
+ this.connectionSupplier = connectionSupplier;
+ }
+
+ @Override
+ public ClientGetCommand identifier(String identifier) {
+ this.identifier = identifier;
+ return this;
+ }
+
+ @Override
+ public ClientGetCommand ignoreDataStore() {
+ ignoreDataStore = true;
+ return this;
+ }
+
+ @Override
+ public ClientGetCommand dataStoreOnly() {
+ dataStoreOnly = true;
+ return this;
+ }
+
+ @Override
+ public ClientGetCommand maxSize(long maxSize) {
+ this.maxSize = maxSize;
+ return this;
+ }
+
+ @Override
+ public ClientGetCommand priority(Priority priority) {
+ this.priority = priority;
+ return this;
+ }
+
+ @Override
+ public ClientGetCommand realTime() {
+ realTime = true;
+ return this;
+ }
+
+ @Override
+ public ClientGetCommand global() {
+ global = true;
+ return this;
+ }
+
+ @Override
+ public Future<Optional<Data>> uri(String uri) {
+ ClientGet clientGet = new ClientGet(uri, identifier, ReturnType.direct);
+ if (ignoreDataStore) {
+ clientGet.setIgnoreDataStore(true);
+ }
+ if (dataStoreOnly) {
+ clientGet.setDataStoreOnly(true);
+ }
+ if (maxSize != null) {
+ clientGet.setMaxSize(maxSize);
+ }
+ if (priority != null) {
+ clientGet.setPriority(priority);
+ }
+ if (realTime) {
+ clientGet.setRealTimeFlag(true);
+ }
+ if (global) {
+ clientGet.setGlobal(true);
+ }
+ return threadPool.submit(() -> {
+ FcpReplySequence<Optional<Data>> replySequence =
+ new ClientGetReplySequence();
+ return replySequence.send(clientGet).get();
+ });
+ }
+
+ private class ClientGetReplySequence extends FcpReplySequence<Optional<Data>> {
+
+ private final AtomicBoolean finished = new AtomicBoolean();
+ private final AtomicBoolean failed = new AtomicBoolean();
+
+ private final String identifier = ClientGetCommandImpl.this.identifier;
+
+ private String contentType;
+ private long dataLength;
+ private InputStream payload;
+
+ public ClientGetReplySequence() throws IOException {
+ super(ClientGetCommandImpl.this.threadPool, ClientGetCommandImpl.this.connectionSupplier.get());
+ }
+
+ @Override
+ protected boolean isFinished() {
+ return finished.get() || failed.get();
+ }
+
+ @Override
+ protected Optional<Data> getResult() {
+ return failed.get() ? Optional.empty() : Optional.of(new Data() {
+ @Override
+ public String getMimeType() {
+ return contentType;
+ }
+
+ @Override
+ public long size() {
+ return dataLength;
+ }
+
+ @Override
+ public InputStream getInputStream() {
+ return payload;
+ }
+ });
+ }
+
+ @Override
+ protected void consumeAllData(AllData allData) {
+ if (allData.getIdentifier().equals(identifier)) {
+ synchronized (this) {
+ contentType = allData.getContentType();
+ dataLength = allData.getDataLength();
+ try {
+ payload = new TempInputStream(allData.getPayloadInputStream(), dataLength);
+ finished.set(true);
+ } catch (IOException e) {
+ // TODO – logging
+ failed.set(true);
+ }
+ }
+ }
+ }
+
+ @Override
+ protected void consumeGetFailed(GetFailed getFailed) {
+ if (getFailed.getIdentifier().equals(identifier)) {
+ failed.set(true);
+ }
+ }
+
+ @Override
+ protected void consumeConnectionClosed(Throwable throwable) {
+ failed.set(true);
+ }
+
+ }
+
+}