Github user geomacy commented on a diff in the pull request:
https://github.com/apache/incubator-brooklyn/pull/1030#discussion_r44902393
--- Diff:
usage/test-framework/src/main/java/org/apache/brooklyn/test/framework/SimpleCommand.java
---
@@ -0,0 +1,50 @@
+/*
+ * 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.brooklyn.test.framework;
+
+import org.apache.brooklyn.api.entity.Entity;
+import org.apache.brooklyn.api.entity.ImplementedBy;
+import org.apache.brooklyn.config.ConfigKey;
+import org.apache.brooklyn.core.config.ConfigKeys;
+import org.apache.brooklyn.core.entity.trait.Startable;
+import org.apache.brooklyn.core.sensor.AttributeSensorAndConfigKey;
+import org.apache.brooklyn.entity.software.base.SoftwareProcess;
+import org.apache.brooklyn.util.core.flags.SetFromFlag;
+import org.apache.brooklyn.util.os.Os;
+
+import static org.apache.brooklyn.core.config.ConfigKeys.newConfigKey;
+
+/**
+ * Entity to invoke on a node a simple command that will immediately
succeed or fail.
+ *
+ * Invokes the command in the start operation, and declares itself RUNNING.
+ */
+@ImplementedBy(SimpleCommandImpl.class)
+public interface SimpleCommand extends Entity, Startable {
+
+ @SetFromFlag(nullable = false)
+ ConfigKey<String> DEFAULT_COMMAND =
ConfigKeys.newConfigKey(String.class, "defaultCommand",
+ "Command to invoke if no script is provided via a
downloadUrl");
+
+ @SetFromFlag("downloadUrl")
+ AttributeSensorAndConfigKey<String, String> DOWNLOAD_URL =
SoftwareProcess.DOWNLOAD_URL;
+
+ @SetFromFlag("scriptDir")
+ ConfigKey<String> SCRIPT_DIR = newConfigKey("scriptDir", "directory
where downloaded scripts should be put", Os.tmp());
--- End diff --
Thanks for the detailed reviews. Regarding the 'step back' comment on the
amount of code, I couldn't agree more! I followed the VanillaSoftwareProcess
model, and while that was probably a valuable learning exercise, it leaves what
does seem like an awful lot of code to do something simple. If it's ok to do
the work as tasks directly in the ```start()``` of the entity then I'll rework
it that way. (I wasn't sure if there might be some non-obvious dependencies
elsewhere in the code that meant you had to have a driver or lifecycle
classes?)
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