[GitHub] keith-turner commented on a change in pull request #941: Avoid exposing internal types in new VolumeChooser SPIs

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keith-turner commented on a change in pull request #941: Avoid exposing internal types in new VolumeChooser SPIs
URL: https://github.com/apache/accumulo/pull/941#discussion_r254894957
 
 

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 File path: core/src/main/java/org/apache/accumulo/core/spi/common/SystemContext.java
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 @@ -0,0 +1,150 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.accumulo.core.spi.common;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.apache.accumulo.core.client.TableNotFoundException;
+
+/**
+ * This interface exposes Accumulo system level information to plugins in a stable manner. The
+ * purpose of this interface is to insulate plugins from internal refactorings and changes to
+ * Accumulo.
+ *
+ * @since 2.0.0
+ */
+public interface SystemContext {
 
 Review comment:
   For testing purposes a user may mock this.  

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