Github user rhtyd commented on a diff in the pull request:
https://github.com/apache/cloudstack/pull/1502#discussion_r62612221
--- Diff:
utils/src/main/java/org/apache/cloudstack/utils/process/ProcessRunner.java ---
@@ -0,0 +1,112 @@
+//
+// 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.cloudstack.utils.process;
+
+import com.cloud.utils.concurrency.NamedThreadFactory;
+import com.google.common.base.Preconditions;
+import com.google.common.base.Strings;
+import org.apache.log4j.Logger;
+import org.joda.time.Duration;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.List;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+public class ProcessRunner {
+ public static final Logger LOG = Logger.getLogger(ProcessRunner.class);
+
+ private static final ExecutorService processExecutor =
Executors.newCachedThreadPool(new NamedThreadFactory("ProcessRunner"));
--- End diff --
This is a general utility, so it won't be possible to configure the
executor service pool size here without passing a global setting variable on
initialization. The cached pool ensures to reuse threads and still a better way
than spawning separate threads on each run. Wrt oobm, for each issue command
only one thread is spawned that execs an ipmitool process, a maximum of 250 (or
size specified in db.properties which forces the size of max. no of concurrent
async jobs) ipmitool processes can be spawned at any given time.
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