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Diffstat (limited to 'bundles/org.eclipse.equinox.log.stream/osgi/src/org/osgi/service/log/stream/LogStreamProvider.java')
-rw-r--r--bundles/org.eclipse.equinox.log.stream/osgi/src/org/osgi/service/log/stream/LogStreamProvider.java39
1 files changed, 24 insertions, 15 deletions
diff --git a/bundles/org.eclipse.equinox.log.stream/osgi/src/org/osgi/service/log/stream/LogStreamProvider.java b/bundles/org.eclipse.equinox.log.stream/osgi/src/org/osgi/service/log/stream/LogStreamProvider.java
index 99f5645c9..f48266bc6 100644
--- a/bundles/org.eclipse.equinox.log.stream/osgi/src/org/osgi/service/log/stream/LogStreamProvider.java
+++ b/bundles/org.eclipse.equinox.log.stream/osgi/src/org/osgi/service/log/stream/LogStreamProvider.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) OSGi Alliance (2016). All Rights Reserved.
+ * Copyright (c) OSGi Alliance (2016, 2017). All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -19,10 +19,11 @@ package org.osgi.service.log.stream;
import org.osgi.annotation.versioning.ProviderType;
import org.osgi.service.log.LogEntry;
import org.osgi.util.pushstream.PushStream;
+import org.osgi.util.pushstream.QueuePolicyOption;
/**
- * LogStreamProvider service for creating a PushStream of {@link LogEntry}
- * objects.
+ * LogStreamProvider service for creating a {@link PushStream} of
+ * {@link LogEntry} objects.
*
* @ThreadSafe
* @author $Id$
@@ -30,34 +31,42 @@ import org.osgi.util.pushstream.PushStream;
@ProviderType
public interface LogStreamProvider {
/**
- * Creation options for the PushStream of {@link LogEntry} objects.
+ * Creation options for the {@link PushStream} of {@link LogEntry} objects.
*/
enum Options {
/**
* Include history.
* <p>
- * Prime the created PushStream with the past {@link LogEntry} objects.
- * The number of past {@link LogEntry} objects is implementation
- * specific.
+ * Prime the created PushStream with the available historical
+ * {@link LogEntry} objects. The number of available {@link LogEntry}
+ * objects is implementation specific.
* <p>
- * The created PushStream will supply the past {@link LogEntry} objects
- * followed by newly created {@link LogEntry} objects.
+ * The created PushStream will supply the available historical
+ * {@link LogEntry} objects followed by newly created {@link LogEntry}
+ * objects.
*/
HISTORY;
}
/**
- * Create a PushStream of {@link LogEntry} objects.
+ * Create a {@link PushStream} of {@link LogEntry} objects.
* <p>
- * The returned PushStream is an unbuffered stream with a parallelism of
- * one.
+ * The returned PushStream must:
+ * <ul>
+ * <li>Be buffered with a buffer large enough to contain the history, if
+ * included.</li>
+ * <li>Have the {@link QueuePolicyOption#DISCARD_OLDEST} queue policy
+ * option.</li>
+ * <li>Use a shared executor.</li>
+ * <li>Have a parallelism of one.</li>
+ * </ul>
* <p>
* When this LogStreamProvider service is released by the obtaining bundle,
- * this LogStreamProvider service must call {@code close()} on the returned
- * PushStream object if it has not already been closed.
+ * this LogStreamProvider service must call {@link PushStream#close()} on
+ * the returned PushStream object if it has not already been closed.
*
* @param options The options to use when creating the PushStream.
- * @return A PushStream of {@link LogEntry} objects.
+ * @return A {@link PushStream} of {@link LogEntry} objects.
*/
PushStream<LogEntry> createStream(Options... options);
}

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