1 files changed, 63 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.logstream/src/org/osgi/service/log/stream/LogStreamProvider.java b/bundles/org.eclipse.equinox.logstream/src/org/osgi/service/log/stream/LogStreamProvider.java
new file mode 100644
index 000000000..99f5645c9
--- /dev/null
+++ b/bundles/org.eclipse.equinox.logstream/src/org/osgi/service/log/stream/LogStreamProvider.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) OSGi Alliance (2016). 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.osgi.service.log.stream;
+
+import org.osgi.annotation.versioning.ProviderType;
+import org.osgi.service.log.LogEntry;
+import org.osgi.util.pushstream.PushStream;
+
+/**
+ * LogStreamProvider service for creating a PushStream of {@link LogEntry}
+ * objects.
+ * 
+ * @ThreadSafe
+ * @author $Id$
+ */
+@ProviderType
+public interface LogStreamProvider {
+	/**
+	 * Creation options for the 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.
+		 * <p>
+		 * The created PushStream will supply the past {@link LogEntry} objects
+		 * followed by newly created {@link LogEntry} objects.
+		 */
+		HISTORY;
+	}
+
+	/**
+	 * Create a PushStream of {@link LogEntry} objects.
+	 * <p>
+	 * The returned PushStream is an unbuffered stream with a parallelism of
+	 * one.
+	 * <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.
+	 * 
+	 * @param options The options to use when creating the PushStream.
+	 * @return A PushStream of {@link LogEntry} objects.
+	 */
+	PushStream<LogEntry> createStream(Options... options);
+}