src/java.net.http/share/classes/java/net/http/internal/PullPublisher.java
branchhttp-client-branch
changeset 56092 fd85b2bf2b0d
parent 56091 aedd6133e7a0
child 56093 22d94c4a3641
--- a/src/java.net.http/share/classes/java/net/http/internal/PullPublisher.java	Wed Feb 07 15:46:30 2018 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,138 +0,0 @@
-/*
- * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package java.net.http.internal;
-
-import java.util.Iterator;
-import java.util.concurrent.Flow;
-import java.net.http.internal.common.Demand;
-import java.net.http.internal.common.SequentialScheduler;
-
-/**
- * A Publisher that publishes items obtained from the given Iterable. Each new
- * subscription gets a new Iterator.
- */
-class PullPublisher<T> implements Flow.Publisher<T> {
-
-    // Only one of `iterable` and `throwable` can be non-null. throwable is
-    // non-null when an error has been encountered, by the creator of
-    // PullPublisher, while subscribing the subscriber, but before subscribe has
-    // completed.
-    private final Iterable<T> iterable;
-    private final Throwable throwable;
-
-    PullPublisher(Iterable<T> iterable, Throwable throwable) {
-        this.iterable = iterable;
-        this.throwable = throwable;
-    }
-
-    PullPublisher(Iterable<T> iterable) {
-        this(iterable, null);
-    }
-
-    @Override
-    public void subscribe(Flow.Subscriber<? super T> subscriber) {
-        Subscription sub;
-        if (throwable != null) {
-            assert iterable == null : "non-null iterable: " + iterable;
-            sub = new Subscription(subscriber, null, throwable);
-        } else {
-            assert throwable == null : "non-null exception: " + throwable;
-            sub = new Subscription(subscriber, iterable.iterator(), null);
-        }
-        subscriber.onSubscribe(sub);
-
-        if (throwable != null) {
-            sub.pullScheduler.runOrSchedule();
-        }
-    }
-
-    private class Subscription implements Flow.Subscription {
-
-        private final Flow.Subscriber<? super T> subscriber;
-        private final Iterator<T> iter;
-        private volatile boolean completed;
-        private volatile boolean cancelled;
-        private volatile Throwable error;
-        final SequentialScheduler pullScheduler = new SequentialScheduler(new PullTask());
-        private final Demand demand = new Demand();
-
-        Subscription(Flow.Subscriber<? super T> subscriber,
-                     Iterator<T> iter,
-                     Throwable throwable) {
-            this.subscriber = subscriber;
-            this.iter = iter;
-            this.error = throwable;
-        }
-
-        final class PullTask extends SequentialScheduler.CompleteRestartableTask {
-            @Override
-            protected void run() {
-                if (completed || cancelled) {
-                    return;
-                }
-
-                Throwable t = error;
-                if (t != null) {
-                    completed = true;
-                    pullScheduler.stop();
-                    subscriber.onError(t);
-                    return;
-                }
-
-                while (demand.tryDecrement() && !cancelled) {
-                    if (!iter.hasNext()) {
-                        break;
-                    } else {
-                        subscriber.onNext(iter.next());
-                    }
-                }
-                if (!iter.hasNext() && !cancelled) {
-                    completed = true;
-                    pullScheduler.stop();
-                    subscriber.onComplete();
-                }
-            }
-        }
-
-        @Override
-        public void request(long n) {
-            if (cancelled)
-                return;  // no-op
-
-            if (n <= 0) {
-                error = new IllegalArgumentException("illegal non-positive request:" + n);
-            } else {
-                demand.increase(n);
-            }
-            pullScheduler.runOrSchedule();
-        }
-
-        @Override
-        public void cancel() {
-            cancelled = true;
-        }
-    }
-}